[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/Kconfig b/ap/os/linux/linux-3.4.x/drivers/power/Kconfig
new file mode 100644
index 0000000..bb352da
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/Kconfig
@@ -0,0 +1,359 @@
+menuconfig POWER_SUPPLY
+ tristate "Power supply class support"
+ help
+ Say Y here to enable power supply class support. This allows
+ power supply (batteries, AC, USB) monitoring by userspace
+ via sysfs and uevent (if available) and/or APM kernel interface
+ (if selected below).
+
+if POWER_SUPPLY
+
+config POWER_SUPPLY_DEBUG
+ bool "Power supply debug"
+ help
+ Say Y here to enable debugging messages for power supply class
+ and drivers.
+
+config PDA_POWER
+ tristate "Generic PDA/phone power driver"
+ depends on !S390
+ help
+ Say Y here to enable generic power driver for PDAs and phones with
+ one or two external power supplies (AC/USB) connected to main and
+ backup batteries, and optional builtin charger.
+
+config APM_POWER
+ tristate "APM emulation for class batteries"
+ depends on APM_EMULATION
+ help
+ Say Y here to enable support APM status emulation using
+ battery class devices.
+
+config MAX8925_POWER
+ tristate "MAX8925 battery charger support"
+ depends on MFD_MAX8925
+ help
+ Say Y here to enable support for the battery charger in the Maxim
+ MAX8925 PMIC.
+
+config WM831X_BACKUP
+ tristate "WM831X backup battery charger support"
+ depends on MFD_WM831X
+ help
+ Say Y here to enable support for the backup battery charger
+ in the Wolfson Microelectronics WM831x PMICs.
+
+config WM831X_POWER
+ tristate "WM831X PMU support"
+ depends on MFD_WM831X
+ help
+ Say Y here to enable support for the power management unit
+ provided by Wolfson Microelectronics WM831x PMICs.
+
+config WM8350_POWER
+ tristate "WM8350 PMU support"
+ depends on MFD_WM8350
+ help
+ Say Y here to enable support for the power management unit
+ provided by the Wolfson Microelectronics WM8350 PMIC.
+
+config TEST_POWER
+ tristate "Test power driver"
+ help
+ This driver is used for testing. It's safe to say M here.
+
+config BATTERY_DS2760
+ tristate "DS2760 battery driver (HP iPAQ & others)"
+ depends on W1 && W1_SLAVE_DS2760
+ help
+ Say Y here to enable support for batteries with ds2760 chip.
+
+config BATTERY_DS2780
+ tristate "DS2780 battery driver"
+ depends on HAS_IOMEM
+ select W1
+ select W1_SLAVE_DS2780
+ help
+ Say Y here to enable support for batteries with ds2780 chip.
+
+config BATTERY_DS2781
+ tristate "2781 battery driver"
+ depends on HAS_IOMEM
+ select W1
+ select W1_SLAVE_DS2781
+ help
+ If you enable this you will have the DS2781 battery driver support.
+
+ The battery monitor chip is used in many batteries/devices
+ as the one who is responsible for charging/discharging/monitoring
+ Li+ batteries.
+
+ If you are unsure, say N.
+
+config BATTERY_DS2782
+ tristate "DS2782/DS2786 standalone gas-gauge"
+ depends on I2C
+ help
+ Say Y here to enable support for the DS2782/DS2786 standalone battery
+ gas-gauge.
+
+config BATTERY_PMU
+ tristate "Apple PMU battery"
+ depends on PPC32 && ADB_PMU
+ help
+ Say Y here to expose battery information on Apple machines
+ through the generic battery class.
+
+config BATTERY_OLPC
+ tristate "One Laptop Per Child battery"
+ depends on X86_32 && OLPC
+ help
+ Say Y to enable support for the battery on the OLPC laptop.
+
+config BATTERY_TOSA
+ tristate "Sharp SL-6000 (tosa) battery"
+ depends on MACH_TOSA && MFD_TC6393XB && TOUCHSCREEN_WM97XX
+ help
+ Say Y to enable support for the battery on the Sharp Zaurus
+ SL-6000 (tosa) models.
+
+config BATTERY_COLLIE
+ tristate "Sharp SL-5500 (collie) battery"
+ depends on SA1100_COLLIE && MCP_UCB1200
+ help
+ Say Y to enable support for the battery on the Sharp Zaurus
+ SL-5500 (collie) models.
+
+config BATTERY_WM97XX
+ bool "WM97xx generic battery driver"
+ depends on TOUCHSCREEN_WM97XX=y
+ help
+ Say Y to enable support for battery measured by WM97xx aux port.
+
+config BATTERY_SBS
+ tristate "SBS Compliant gas gauge"
+ depends on I2C
+ help
+ Say Y to include support for SBS battery driver for SBS-compliant
+ gas gauges.
+
+config BATTERY_BQ24165
+ tristate "BQ24165 battery driver"
+ help
+ Say Y to include support for chargers which report their online status
+ through a GPIO pin.
+
+config CHARGER_ZX234502
+ tristate "zx234502 charger driver"
+ help
+ Say Y to include support for chargers which report their online status
+ through a GPIO pin.
+
+config CHARGER_AW3215
+ tristate "aw3215 charger driver"
+ help
+ Say Y to include support for chargers which report their online status
+ through a GPIO pin.
+
+config CHARGER_SGM40561
+ tristate "sgm40561 charger driver"
+ help
+ Say Y to include support for chargers which report their online status
+ through a GPIO pin.
+
+config CHARGER_XC5071
+ tristate "xc5071 charger driver"
+ help
+ Say Y to include support for chargers which report their online status
+ through a GPIO pin.
+
+config CHARGER_ZX234502_EVB
+ bool "EVB "
+ depends on CHARGER_ZX234502
+ default n
+ help
+ Say Y here to support for CHARGER EVB.
+
+config BATTERY_BQ27x00
+ tristate "BQ27x00 battery driver"
+ help
+ Say Y here to enable support for batteries with BQ27x00 (I2C/HDQ) chips.
+
+config BATTERY_BQ27X00_I2C
+ bool "BQ27200/BQ27500 support"
+ depends on BATTERY_BQ27x00
+ depends on I2C
+ default y
+ help
+ Say Y here to enable support for batteries with BQ27x00 (I2C) chips.
+
+config BATTERY_BQ27X00_PLATFORM
+ bool "BQ27000 support"
+ depends on BATTERY_BQ27x00
+ default y
+ help
+ Say Y here to enable support for batteries with BQ27000 (HDQ) chips.
+
+config BATTERY_DA9030
+ tristate "DA9030 battery driver"
+ depends on PMIC_DA903X
+ help
+ Say Y here to enable support for batteries charger integrated into
+ DA9030 PMIC.
+
+config BATTERY_DA9052
+ tristate "Dialog DA9052 Battery"
+ depends on PMIC_DA9052
+ depends on BROKEN
+ help
+ Say Y here to enable support for batteries charger integrated into
+ DA9052 PMIC.
+
+config BATTERY_MAX17040
+ tristate "Maxim MAX17040 Fuel Gauge"
+ depends on I2C
+ help
+ MAX17040 is fuel-gauge systems for lithium-ion (Li+) batteries
+ in handheld and portable equipment. The MAX17040 is configured
+ to operate with a single lithium cell
+
+config BATTERY_MAX17042
+ tristate "Maxim MAX17042/8997/8966 Fuel Gauge"
+ depends on I2C
+ help
+ MAX17042 is fuel-gauge systems for lithium-ion (Li+) batteries
+ in handheld and portable equipment. The MAX17042 is configured
+ to operate with a single lithium cell. MAX8997 and MAX8966 are
+ multi-function devices that include fuel gauages that are compatible
+ with MAX17042.
+
+config BATTERY_ANDROID
+ tristate "Battery driver for Android"
+ help
+ Say Y to enable generic support for battery charging according
+ to common Android policies.
+ This driver adds periodic battery level and health monitoring,
+ kernel log reporting and other debugging features, common board
+ battery file glue logic for battery/case temperature sensors,
+ etc.
+
+config BATTERY_Z2
+ tristate "Z2 battery driver"
+ depends on I2C && MACH_ZIPIT2
+ help
+ Say Y to include support for the battery on the Zipit Z2.
+
+config BATTERY_S3C_ADC
+ tristate "Battery driver for Samsung ADC based monitoring"
+ depends on S3C_ADC
+ help
+ Say Y here to enable support for iPAQ h1930/h1940/rx1950 battery
+
+config CHARGER_PCF50633
+ tristate "NXP PCF50633 MBC"
+ depends on MFD_PCF50633
+ help
+ Say Y to include support for NXP PCF50633 Main Battery Charger.
+
+config BATTERY_JZ4740
+ tristate "Ingenic JZ4740 battery"
+ depends on MACH_JZ4740
+ depends on MFD_JZ4740_ADC
+ help
+ Say Y to enable support for the battery on Ingenic JZ4740 based
+ boards.
+
+ This driver can be build as a module. If so, the module will be
+ called jz4740-battery.
+
+config BATTERY_INTEL_MID
+ tristate "Battery driver for Intel MID platforms"
+ depends on INTEL_SCU_IPC && SPI
+ help
+ Say Y here to enable the battery driver on Intel MID
+ platforms.
+
+config CHARGER_ISP1704
+ tristate "ISP1704 USB Charger Detection"
+ depends on USB_OTG_UTILS
+ help
+ Say Y to enable support for USB Charger Detection with
+ ISP1707/ISP1704 USB transceivers.
+
+config CHARGER_MAX8903
+ tristate "MAX8903 Battery DC-DC Charger for USB and Adapter Power"
+ depends on GENERIC_HARDIRQS
+ help
+ Say Y to enable support for the MAX8903 DC-DC charger and sysfs.
+ The driver supports controlling charger-enable and current-limit
+ pins based on the status of charger connections with interrupt
+ handlers.
+
+config CHARGER_TWL4030
+ tristate "OMAP TWL4030 BCI charger driver"
+ depends on TWL4030_CORE
+ help
+ Say Y here to enable support for TWL4030 Battery Charge Interface.
+
+config CHARGER_LP8727
+ tristate "TI/National Semiconductor LP8727 charger driver"
+ depends on I2C
+ help
+ Say Y here to enable support for LP8727 Charger Driver.
+
+config CHARGER_GPIO
+ tristate "GPIO charger"
+ depends on GPIOLIB
+ help
+ Say Y to include support for chargers which report their online status
+ through a GPIO pin.
+
+ This driver can be build as a module. If so, the module will be
+ called gpio-charger.
+
+config CHARGER_MANAGER
+ bool "Battery charger manager for multiple chargers"
+ depends on REGULATOR && RTC_CLASS
+ help
+ Say Y to enable charger-manager support, which allows multiple
+ chargers attached to a battery and multiple batteries attached to a
+ system. The charger-manager also can monitor charging status in
+ runtime and in suspend-to-RAM by waking up the system periodically
+ with help of suspend_again support.
+
+config CHARGER_MAX8997
+ tristate "Maxim MAX8997/MAX8966 PMIC battery charger driver"
+ depends on MFD_MAX8997 && REGULATOR_MAX8997
+ help
+ Say Y to enable support for the battery charger control sysfs and
+ platform data of MAX8997/LP3974 PMICs.
+
+config CHARGER_MAX8998
+ tristate "Maxim MAX8998/LP3974 PMIC battery charger driver"
+ depends on MFD_MAX8998 && REGULATOR_MAX8998
+ help
+ Say Y to enable support for the battery charger control sysfs and
+ platform data of MAX8998/LP3974 PMICs.
+
+config CHARGER_SMB347
+ tristate "Summit Microelectronics SMB347 Battery Charger"
+ depends on I2C
+ help
+ Say Y to include support for Summit Microelectronics SMB347
+ Battery Charger.
+
+config AB8500_BM
+ bool "AB8500 Battery Management Driver"
+ depends on AB8500_CORE && AB8500_GPADC
+ help
+ Say Y to include support for AB5500 battery management.
+
+config AB8500_BATTERY_THERM_ON_BATCTRL
+ bool "Thermistor connected on BATCTRL ADC"
+ depends on AB8500_BM
+ help
+ Say Y to enable battery temperature measurements using
+ thermistor connected on BATCTRL ADC.
+
+
+endif # POWER_SUPPLY
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/Makefile b/ap/os/linux/linux-3.4.x/drivers/power/Makefile
new file mode 100644
index 0000000..01b5c1e
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/Makefile
@@ -0,0 +1,65 @@
+ccflags-$(CONFIG_POWER_SUPPLY_DEBUG) := -DDEBUG
+
+power_supply-y := power_supply_core.o
+power_supply-$(CONFIG_SYSFS) += power_supply_sysfs.o
+#power_supply-$(CONFIG_LEDS_TRIGGERS) += power_supply_leds.o
+
+obj-$(CONFIG_POWER_SUPPLY) += power_supply.o
+
+obj-$(CONFIG_PDA_POWER) += pda_power.o
+obj-$(CONFIG_APM_POWER) += apm_power.o
+obj-$(CONFIG_MAX8925_POWER) += max8925_power.o
+obj-$(CONFIG_WM831X_BACKUP) += wm831x_backup.o
+obj-$(CONFIG_WM831X_POWER) += wm831x_power.o
+obj-$(CONFIG_WM8350_POWER) += wm8350_power.o
+obj-$(CONFIG_TEST_POWER) += test_power.o
+
+obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o
+obj-$(CONFIG_BATTERY_DS2780) += ds2780_battery.o
+obj-$(CONFIG_BATTERY_DS2781) += ds2781_battery.o
+obj-$(CONFIG_BATTERY_DS2782) += ds2782_battery.o
+obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o
+obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o
+obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
+obj-$(CONFIG_BATTERY_COLLIE) += collie_battery.o
+obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o
+obj-$(CONFIG_BATTERY_SBS) += sbs-battery.o
+obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
+obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
+obj-$(CONFIG_BATTERY_DA9052) += da9052-battery.o
+obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o
+obj-$(CONFIG_BATTERY_MAX17042) += max17042_battery.o
+obj-$(CONFIG_BATTERY_Z2) += z2_battery.o
+obj-$(CONFIG_BATTERY_S3C_ADC) += s3c_adc_battery.o
+obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
+obj-$(CONFIG_BATTERY_JZ4740) += jz4740-battery.o
+obj-$(CONFIG_BATTERY_INTEL_MID) += intel_mid_battery.o
+obj-$(CONFIG_AB8500_BM) += ab8500_charger.o ab8500_btemp.o ab8500_fg.o abx500_chargalg.o
+obj-$(CONFIG_CHARGER_ISP1704) += isp1704_charger.o
+obj-$(CONFIG_CHARGER_MAX8903) += max8903_charger.o
+obj-$(CONFIG_CHARGER_TWL4030) += twl4030_charger.o
+obj-$(CONFIG_CHARGER_LP8727) += lp8727_charger.o
+obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o
+obj-$(CONFIG_CHARGER_MANAGER) += charger-manager.o
+obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o
+obj-$(CONFIG_CHARGER_MAX8998) += max8998_charger.o
+obj-$(CONFIG_CHARGER_SMB347) += smb347-charger.o
+obj-$(CONFIG_BATTERY_ANDROID) += android_battery.o
+obj-$(CONFIG_BATTERY_BQ24165) += bq24165_battery.o
+obj-$(CONFIG_CHARGER_ZX234502) += zx234502_charger.o
+obj-$(CONFIG_CHARGER_AW3215) += aw3215_charger.o
+obj-$(CONFIG_CHARGER_SGM40561) += sgm40561_charger.o
+obj-$(CONFIG_CHARGER_XC5071) += xc5071_charger.o
+
+ifeq ($(V3PHONE_TYPE),K318)
+ccflags-y += -D_USE_V3PHONE_TYPE_K318_
+endif
+ifeq ($(V3PHONE_TYPE),C31F)
+ccflags-y += -D_USE_V3PHONE_TYPE_C31F_
+endif
+ifeq ($(V3PHONE_TYPE),XRSD)
+ccflags-y += -D_USE_V3PHONE_TYPE_XRSD_
+endif
+ifeq ($(CONFIG_WIFI_MODULE), xr819)
+ccflags-y += -D_CHARGER_UNNOTIFY_USB_
+endif
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/ab8500_btemp.c b/ap/os/linux/linux-3.4.x/drivers/power/ab8500_btemp.c
new file mode 100644
index 0000000..2a6bf76
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/ab8500_btemp.c
@@ -0,0 +1,1124 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2012
+ *
+ * Battery temperature driver for AB8500
+ *
+ * License Terms: GNU General Public License v2
+ * Author:
+ * Johan Palsson <johan.palsson@stericsson.com>
+ * Karl Komierowski <karl.komierowski@stericsson.com>
+ * Arun R Murthy <arun.murthy@stericsson.com>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/completion.h>
+#include <linux/workqueue.h>
+#include <linux/mfd/abx500/ab8500.h>
+#include <linux/mfd/abx500.h>
+#include <linux/mfd/abx500/ab8500-bm.h>
+#include <linux/mfd/abx500/ab8500-gpadc.h>
+#include <linux/jiffies.h>
+
+#define VTVOUT_V 1800
+
+#define BTEMP_THERMAL_LOW_LIMIT -10
+#define BTEMP_THERMAL_MED_LIMIT 0
+#define BTEMP_THERMAL_HIGH_LIMIT_52 52
+#define BTEMP_THERMAL_HIGH_LIMIT_57 57
+#define BTEMP_THERMAL_HIGH_LIMIT_62 62
+
+#define BTEMP_BATCTRL_CURR_SRC_7UA 7
+#define BTEMP_BATCTRL_CURR_SRC_20UA 20
+
+#define to_ab8500_btemp_device_info(x) container_of((x), \
+ struct ab8500_btemp, btemp_psy);
+
+/**
+ * struct ab8500_btemp_interrupts - ab8500 interrupts
+ * @name: name of the interrupt
+ * @isr function pointer to the isr
+ */
+struct ab8500_btemp_interrupts {
+ char *name;
+ irqreturn_t (*isr)(int irq, void *data);
+};
+
+struct ab8500_btemp_events {
+ bool batt_rem;
+ bool btemp_high;
+ bool btemp_medhigh;
+ bool btemp_lowmed;
+ bool btemp_low;
+ bool ac_conn;
+ bool usb_conn;
+};
+
+struct ab8500_btemp_ranges {
+ int btemp_high_limit;
+ int btemp_med_limit;
+ int btemp_low_limit;
+};
+
+/**
+ * struct ab8500_btemp - ab8500 BTEMP device information
+ * @dev: Pointer to the structure device
+ * @node: List of AB8500 BTEMPs, hence prepared for reentrance
+ * @curr_source: What current source we use, in uA
+ * @bat_temp: Battery temperature in degree Celcius
+ * @prev_bat_temp Last dispatched battery temperature
+ * @parent: Pointer to the struct ab8500
+ * @gpadc: Pointer to the struct gpadc
+ * @fg: Pointer to the struct fg
+ * @pdata: Pointer to the abx500_btemp platform data
+ * @bat: Pointer to the abx500_bm platform data
+ * @btemp_psy: Structure for BTEMP specific battery properties
+ * @events: Structure for information about events triggered
+ * @btemp_ranges: Battery temperature range structure
+ * @btemp_wq: Work queue for measuring the temperature periodically
+ * @btemp_periodic_work: Work for measuring the temperature periodically
+ */
+struct ab8500_btemp {
+ struct device *dev;
+ struct list_head node;
+ int curr_source;
+ int bat_temp;
+ int prev_bat_temp;
+ struct ab8500 *parent;
+ struct ab8500_gpadc *gpadc;
+ struct ab8500_fg *fg;
+ struct abx500_btemp_platform_data *pdata;
+ struct abx500_bm_data *bat;
+ struct power_supply btemp_psy;
+ struct ab8500_btemp_events events;
+ struct ab8500_btemp_ranges btemp_ranges;
+ struct workqueue_struct *btemp_wq;
+ struct delayed_work btemp_periodic_work;
+};
+
+/* BTEMP power supply properties */
+static enum power_supply_property ab8500_btemp_props[] = {
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_TEMP,
+};
+
+static LIST_HEAD(ab8500_btemp_list);
+
+/**
+ * ab8500_btemp_get() - returns a reference to the primary AB8500 BTEMP
+ * (i.e. the first BTEMP in the instance list)
+ */
+struct ab8500_btemp *ab8500_btemp_get(void)
+{
+ struct ab8500_btemp *btemp;
+ btemp = list_first_entry(&ab8500_btemp_list, struct ab8500_btemp, node);
+
+ return btemp;
+}
+
+/**
+ * ab8500_btemp_batctrl_volt_to_res() - convert batctrl voltage to resistance
+ * @di: pointer to the ab8500_btemp structure
+ * @v_batctrl: measured batctrl voltage
+ * @inst_curr: measured instant current
+ *
+ * This function returns the battery resistance that is
+ * derived from the BATCTRL voltage.
+ * Returns value in Ohms.
+ */
+static int ab8500_btemp_batctrl_volt_to_res(struct ab8500_btemp *di,
+ int v_batctrl, int inst_curr)
+{
+ int rbs;
+
+ if (is_ab8500_1p1_or_earlier(di->parent)) {
+ /*
+ * For ABB cut1.0 and 1.1 BAT_CTRL is internally
+ * connected to 1.8V through a 450k resistor
+ */
+ return (450000 * (v_batctrl)) / (1800 - v_batctrl);
+ }
+
+ if (di->bat->adc_therm == ABx500_ADC_THERM_BATCTRL) {
+ /*
+ * If the battery has internal NTC, we use the current
+ * source to calculate the resistance, 7uA or 20uA
+ */
+ rbs = (v_batctrl * 1000
+ - di->bat->gnd_lift_resistance * inst_curr)
+ / di->curr_source;
+ } else {
+ /*
+ * BAT_CTRL is internally
+ * connected to 1.8V through a 80k resistor
+ */
+ rbs = (80000 * (v_batctrl)) / (1800 - v_batctrl);
+ }
+
+ return rbs;
+}
+
+/**
+ * ab8500_btemp_read_batctrl_voltage() - measure batctrl voltage
+ * @di: pointer to the ab8500_btemp structure
+ *
+ * This function returns the voltage on BATCTRL. Returns value in mV.
+ */
+static int ab8500_btemp_read_batctrl_voltage(struct ab8500_btemp *di)
+{
+ int vbtemp;
+ static int prev;
+
+ vbtemp = ab8500_gpadc_convert(di->gpadc, BAT_CTRL);
+ if (vbtemp < 0) {
+ dev_err(di->dev,
+ "%s gpadc conversion failed, using previous value",
+ __func__);
+ return prev;
+ }
+ prev = vbtemp;
+ return vbtemp;
+}
+
+/**
+ * ab8500_btemp_curr_source_enable() - enable/disable batctrl current source
+ * @di: pointer to the ab8500_btemp structure
+ * @enable: enable or disable the current source
+ *
+ * Enable or disable the current sources for the BatCtrl AD channel
+ */
+static int ab8500_btemp_curr_source_enable(struct ab8500_btemp *di,
+ bool enable)
+{
+ int curr;
+ int ret = 0;
+
+ /*
+ * BATCTRL current sources are included on AB8500 cut2.0
+ * and future versions
+ */
+ if (is_ab8500_1p1_or_earlier(di->parent))
+ return 0;
+
+ /* Only do this for batteries with internal NTC */
+ if (di->bat->adc_therm == ABx500_ADC_THERM_BATCTRL && enable) {
+ if (di->curr_source == BTEMP_BATCTRL_CURR_SRC_7UA)
+ curr = BAT_CTRL_7U_ENA;
+ else
+ curr = BAT_CTRL_20U_ENA;
+
+ dev_dbg(di->dev, "Set BATCTRL %duA\n", di->curr_source);
+
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
+ FORCE_BAT_CTRL_CMP_HIGH, FORCE_BAT_CTRL_CMP_HIGH);
+ if (ret) {
+ dev_err(di->dev, "%s failed setting cmp_force\n",
+ __func__);
+ return ret;
+ }
+
+ /*
+ * We have to wait one 32kHz cycle before enabling
+ * the current source, since ForceBatCtrlCmpHigh needs
+ * to be written in a separate cycle
+ */
+ udelay(32);
+
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
+ FORCE_BAT_CTRL_CMP_HIGH | curr);
+ if (ret) {
+ dev_err(di->dev, "%s failed enabling current source\n",
+ __func__);
+ goto disable_curr_source;
+ }
+ } else if (di->bat->adc_therm == ABx500_ADC_THERM_BATCTRL && !enable) {
+ dev_dbg(di->dev, "Disable BATCTRL curr source\n");
+
+ /* Write 0 to the curr bits */
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
+ BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA,
+ ~(BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA));
+ if (ret) {
+ dev_err(di->dev, "%s failed disabling current source\n",
+ __func__);
+ goto disable_curr_source;
+ }
+
+ /* Enable Pull-Up and comparator */
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
+ BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA,
+ BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA);
+ if (ret) {
+ dev_err(di->dev, "%s failed enabling PU and comp\n",
+ __func__);
+ goto enable_pu_comp;
+ }
+
+ /*
+ * We have to wait one 32kHz cycle before disabling
+ * ForceBatCtrlCmpHigh since this needs to be written
+ * in a separate cycle
+ */
+ udelay(32);
+
+ /* Disable 'force comparator' */
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
+ FORCE_BAT_CTRL_CMP_HIGH, ~FORCE_BAT_CTRL_CMP_HIGH);
+ if (ret) {
+ dev_err(di->dev, "%s failed disabling force comp\n",
+ __func__);
+ goto disable_force_comp;
+ }
+ }
+ return ret;
+
+ /*
+ * We have to try unsetting FORCE_BAT_CTRL_CMP_HIGH one more time
+ * if we got an error above
+ */
+disable_curr_source:
+ /* Write 0 to the curr bits */
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
+ BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA,
+ ~(BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA));
+ if (ret) {
+ dev_err(di->dev, "%s failed disabling current source\n",
+ __func__);
+ return ret;
+ }
+enable_pu_comp:
+ /* Enable Pull-Up and comparator */
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
+ BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA,
+ BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA);
+ if (ret) {
+ dev_err(di->dev, "%s failed enabling PU and comp\n",
+ __func__);
+ return ret;
+ }
+
+disable_force_comp:
+ /*
+ * We have to wait one 32kHz cycle before disabling
+ * ForceBatCtrlCmpHigh since this needs to be written
+ * in a separate cycle
+ */
+ udelay(32);
+
+ /* Disable 'force comparator' */
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
+ FORCE_BAT_CTRL_CMP_HIGH, ~FORCE_BAT_CTRL_CMP_HIGH);
+ if (ret) {
+ dev_err(di->dev, "%s failed disabling force comp\n",
+ __func__);
+ return ret;
+ }
+
+ return ret;
+}
+
+/**
+ * ab8500_btemp_get_batctrl_res() - get battery resistance
+ * @di: pointer to the ab8500_btemp structure
+ *
+ * This function returns the battery pack identification resistance.
+ * Returns value in Ohms.
+ */
+static int ab8500_btemp_get_batctrl_res(struct ab8500_btemp *di)
+{
+ int ret;
+ int batctrl = 0;
+ int res;
+ int inst_curr;
+ int i;
+
+ /*
+ * BATCTRL current sources are included on AB8500 cut2.0
+ * and future versions
+ */
+ ret = ab8500_btemp_curr_source_enable(di, true);
+ if (ret) {
+ dev_err(di->dev, "%s curr source enabled failed\n", __func__);
+ return ret;
+ }
+
+ if (!di->fg)
+ di->fg = ab8500_fg_get();
+ if (!di->fg) {
+ dev_err(di->dev, "No fg found\n");
+ return -EINVAL;
+ }
+
+ ret = ab8500_fg_inst_curr_start(di->fg);
+
+ if (ret) {
+ dev_err(di->dev, "Failed to start current measurement\n");
+ return ret;
+ }
+
+ /*
+ * Since there is no interrupt when current measurement is done,
+ * loop for over 250ms (250ms is one sample conversion time
+ * with 32.768 Khz RTC clock). Note that a stop time must be set
+ * since the ab8500_btemp_read_batctrl_voltage call can block and
+ * take an unknown amount of time to complete.
+ */
+ i = 0;
+
+ do {
+ batctrl += ab8500_btemp_read_batctrl_voltage(di);
+ i++;
+ msleep(20);
+ } while (!ab8500_fg_inst_curr_done(di->fg));
+ batctrl /= i;
+
+ ret = ab8500_fg_inst_curr_finalize(di->fg, &inst_curr);
+ if (ret) {
+ dev_err(di->dev, "Failed to finalize current measurement\n");
+ return ret;
+ }
+
+ res = ab8500_btemp_batctrl_volt_to_res(di, batctrl, inst_curr);
+
+ ret = ab8500_btemp_curr_source_enable(di, false);
+ if (ret) {
+ dev_err(di->dev, "%s curr source disable failed\n", __func__);
+ return ret;
+ }
+
+ dev_dbg(di->dev, "%s batctrl: %d res: %d inst_curr: %d samples: %d\n",
+ __func__, batctrl, res, inst_curr, i);
+
+ return res;
+}
+
+/**
+ * ab8500_btemp_res_to_temp() - resistance to temperature
+ * @di: pointer to the ab8500_btemp structure
+ * @tbl: pointer to the resiatance to temperature table
+ * @tbl_size: size of the resistance to temperature table
+ * @res: resistance to calculate the temperature from
+ *
+ * This function returns the battery temperature in degrees Celcius
+ * based on the NTC resistance.
+ */
+static int ab8500_btemp_res_to_temp(struct ab8500_btemp *di,
+ const struct abx500_res_to_temp *tbl, int tbl_size, int res)
+{
+ int i, temp;
+ /*
+ * Calculate the formula for the straight line
+ * Simple interpolation if we are within
+ * the resistance table limits, extrapolate
+ * if resistance is outside the limits.
+ */
+ if (res > tbl[0].resist)
+ i = 0;
+ else if (res <= tbl[tbl_size - 1].resist)
+ i = tbl_size - 2;
+ else {
+ i = 0;
+ while (!(res <= tbl[i].resist &&
+ res > tbl[i + 1].resist))
+ i++;
+ }
+
+ temp = tbl[i].temp + ((tbl[i + 1].temp - tbl[i].temp) *
+ (res - tbl[i].resist)) / (tbl[i + 1].resist - tbl[i].resist);
+ return temp;
+}
+
+/**
+ * ab8500_btemp_measure_temp() - measure battery temperature
+ * @di: pointer to the ab8500_btemp structure
+ *
+ * Returns battery temperature (on success) else the previous temperature
+ */
+static int ab8500_btemp_measure_temp(struct ab8500_btemp *di)
+{
+ int temp;
+ static int prev;
+ int rbat, rntc, vntc;
+ u8 id;
+
+ id = di->bat->batt_id;
+
+ if (di->bat->adc_therm == ABx500_ADC_THERM_BATCTRL &&
+ id != BATTERY_UNKNOWN) {
+
+ rbat = ab8500_btemp_get_batctrl_res(di);
+ if (rbat < 0) {
+ dev_err(di->dev, "%s get batctrl res failed\n",
+ __func__);
+ /*
+ * Return out-of-range temperature so that
+ * charging is stopped
+ */
+ return BTEMP_THERMAL_LOW_LIMIT;
+ }
+
+ temp = ab8500_btemp_res_to_temp(di,
+ di->bat->bat_type[id].r_to_t_tbl,
+ di->bat->bat_type[id].n_temp_tbl_elements, rbat);
+ } else {
+ vntc = ab8500_gpadc_convert(di->gpadc, BTEMP_BALL);
+ if (vntc < 0) {
+ dev_err(di->dev,
+ "%s gpadc conversion failed,"
+ " using previous value\n", __func__);
+ return prev;
+ }
+ /*
+ * The PCB NTC is sourced from VTVOUT via a 230kOhm
+ * resistor.
+ */
+ rntc = 230000 * vntc / (VTVOUT_V - vntc);
+
+ temp = ab8500_btemp_res_to_temp(di,
+ di->bat->bat_type[id].r_to_t_tbl,
+ di->bat->bat_type[id].n_temp_tbl_elements, rntc);
+ prev = temp;
+ }
+ dev_dbg(di->dev, "Battery temperature is %d\n", temp);
+ return temp;
+}
+
+/**
+ * ab8500_btemp_id() - Identify the connected battery
+ * @di: pointer to the ab8500_btemp structure
+ *
+ * This function will try to identify the battery by reading the ID
+ * resistor. Some brands use a combined ID resistor with a NTC resistor to
+ * both be able to identify and to read the temperature of it.
+ */
+static int ab8500_btemp_id(struct ab8500_btemp *di)
+{
+ int res;
+ u8 i;
+
+ di->curr_source = BTEMP_BATCTRL_CURR_SRC_7UA;
+ di->bat->batt_id = BATTERY_UNKNOWN;
+
+ res = ab8500_btemp_get_batctrl_res(di);
+ if (res < 0) {
+ dev_err(di->dev, "%s get batctrl res failed\n", __func__);
+ return -ENXIO;
+ }
+
+ /* BATTERY_UNKNOWN is defined on position 0, skip it! */
+ for (i = BATTERY_UNKNOWN + 1; i < di->bat->n_btypes; i++) {
+ if ((res <= di->bat->bat_type[i].resis_high) &&
+ (res >= di->bat->bat_type[i].resis_low)) {
+ dev_dbg(di->dev, "Battery detected on %s"
+ " low %d < res %d < high: %d"
+ " index: %d\n",
+ di->bat->adc_therm == ABx500_ADC_THERM_BATCTRL ?
+ "BATCTRL" : "BATTEMP",
+ di->bat->bat_type[i].resis_low, res,
+ di->bat->bat_type[i].resis_high, i);
+
+ di->bat->batt_id = i;
+ break;
+ }
+ }
+
+ if (di->bat->batt_id == BATTERY_UNKNOWN) {
+ dev_warn(di->dev, "Battery identified as unknown"
+ ", resistance %d Ohm\n", res);
+ return -ENXIO;
+ }
+
+ /*
+ * We only have to change current source if the
+ * detected type is Type 1, else we use the 7uA source
+ */
+ if (di->bat->adc_therm == ABx500_ADC_THERM_BATCTRL &&
+ di->bat->batt_id == 1) {
+ dev_dbg(di->dev, "Set BATCTRL current source to 20uA\n");
+ di->curr_source = BTEMP_BATCTRL_CURR_SRC_20UA;
+ }
+
+ return di->bat->batt_id;
+}
+
+/**
+ * ab8500_btemp_periodic_work() - Measuring the temperature periodically
+ * @work: pointer to the work_struct structure
+ *
+ * Work function for measuring the temperature periodically
+ */
+static void ab8500_btemp_periodic_work(struct work_struct *work)
+{
+ int interval;
+ struct ab8500_btemp *di = container_of(work,
+ struct ab8500_btemp, btemp_periodic_work.work);
+
+ di->bat_temp = ab8500_btemp_measure_temp(di);
+
+ if (di->bat_temp != di->prev_bat_temp) {
+ di->prev_bat_temp = di->bat_temp;
+ power_supply_changed(&di->btemp_psy);
+ }
+
+ if (di->events.ac_conn || di->events.usb_conn)
+ interval = di->bat->temp_interval_chg;
+ else
+ interval = di->bat->temp_interval_nochg;
+
+ /* Schedule a new measurement */
+ queue_delayed_work(di->btemp_wq,
+ &di->btemp_periodic_work,
+ round_jiffies(interval * HZ));
+}
+
+/**
+ * ab8500_btemp_batctrlindb_handler() - battery removal detected
+ * @irq: interrupt number
+ * @_di: void pointer that has to address of ab8500_btemp
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_btemp_batctrlindb_handler(int irq, void *_di)
+{
+ struct ab8500_btemp *di = _di;
+ dev_err(di->dev, "Battery removal detected!\n");
+
+ di->events.batt_rem = true;
+ power_supply_changed(&di->btemp_psy);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_btemp_templow_handler() - battery temp lower than 10 degrees
+ * @irq: interrupt number
+ * @_di: void pointer that has to address of ab8500_btemp
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_btemp_templow_handler(int irq, void *_di)
+{
+ struct ab8500_btemp *di = _di;
+
+ if (is_ab8500_2p0_or_earlier(di->parent)) {
+ dev_dbg(di->dev, "Ignore false btemp low irq"
+ " for ABB cut 1.0, 1.1 and 2.0\n");
+ } else {
+ dev_crit(di->dev, "Battery temperature lower than -10deg c\n");
+
+ di->events.btemp_low = true;
+ di->events.btemp_high = false;
+ di->events.btemp_medhigh = false;
+ di->events.btemp_lowmed = false;
+ power_supply_changed(&di->btemp_psy);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_btemp_temphigh_handler() - battery temp higher than max temp
+ * @irq: interrupt number
+ * @_di: void pointer that has to address of ab8500_btemp
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_btemp_temphigh_handler(int irq, void *_di)
+{
+ struct ab8500_btemp *di = _di;
+
+ dev_crit(di->dev, "Battery temperature is higher than MAX temp\n");
+
+ di->events.btemp_high = true;
+ di->events.btemp_medhigh = false;
+ di->events.btemp_lowmed = false;
+ di->events.btemp_low = false;
+ power_supply_changed(&di->btemp_psy);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_btemp_lowmed_handler() - battery temp between low and medium
+ * @irq: interrupt number
+ * @_di: void pointer that has to address of ab8500_btemp
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_btemp_lowmed_handler(int irq, void *_di)
+{
+ struct ab8500_btemp *di = _di;
+
+ dev_dbg(di->dev, "Battery temperature is between low and medium\n");
+
+ di->events.btemp_lowmed = true;
+ di->events.btemp_medhigh = false;
+ di->events.btemp_high = false;
+ di->events.btemp_low = false;
+ power_supply_changed(&di->btemp_psy);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_btemp_medhigh_handler() - battery temp between medium and high
+ * @irq: interrupt number
+ * @_di: void pointer that has to address of ab8500_btemp
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_btemp_medhigh_handler(int irq, void *_di)
+{
+ struct ab8500_btemp *di = _di;
+
+ dev_dbg(di->dev, "Battery temperature is between medium and high\n");
+
+ di->events.btemp_medhigh = true;
+ di->events.btemp_lowmed = false;
+ di->events.btemp_high = false;
+ di->events.btemp_low = false;
+ power_supply_changed(&di->btemp_psy);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_btemp_periodic() - Periodic temperature measurements
+ * @di: pointer to the ab8500_btemp structure
+ * @enable: enable or disable periodic temperature measurements
+ *
+ * Starts of stops periodic temperature measurements. Periodic measurements
+ * should only be done when a charger is connected.
+ */
+static void ab8500_btemp_periodic(struct ab8500_btemp *di,
+ bool enable)
+{
+ dev_dbg(di->dev, "Enable periodic temperature measurements: %d\n",
+ enable);
+ /*
+ * Make sure a new measurement is done directly by cancelling
+ * any pending work
+ */
+ cancel_delayed_work_sync(&di->btemp_periodic_work);
+
+ if (enable)
+ queue_delayed_work(di->btemp_wq, &di->btemp_periodic_work, 0);
+}
+
+/**
+ * ab8500_btemp_get_temp() - get battery temperature
+ * @di: pointer to the ab8500_btemp structure
+ *
+ * Returns battery temperature
+ */
+static int ab8500_btemp_get_temp(struct ab8500_btemp *di)
+{
+ int temp = 0;
+
+ /*
+ * The BTEMP events are not reliabe on AB8500 cut2.0
+ * and prior versions
+ */
+ if (is_ab8500_2p0_or_earlier(di->parent)) {
+ temp = di->bat_temp * 10;
+ } else {
+ if (di->events.btemp_low) {
+ if (temp > di->btemp_ranges.btemp_low_limit)
+ temp = di->btemp_ranges.btemp_low_limit;
+ else
+ temp = di->bat_temp * 10;
+ } else if (di->events.btemp_high) {
+ if (temp < di->btemp_ranges.btemp_high_limit)
+ temp = di->btemp_ranges.btemp_high_limit;
+ else
+ temp = di->bat_temp * 10;
+ } else if (di->events.btemp_lowmed) {
+ if (temp > di->btemp_ranges.btemp_med_limit)
+ temp = di->btemp_ranges.btemp_med_limit;
+ else
+ temp = di->bat_temp * 10;
+ } else if (di->events.btemp_medhigh) {
+ if (temp < di->btemp_ranges.btemp_med_limit)
+ temp = di->btemp_ranges.btemp_med_limit;
+ else
+ temp = di->bat_temp * 10;
+ } else
+ temp = di->bat_temp * 10;
+ }
+ return temp;
+}
+
+/**
+ * ab8500_btemp_get_batctrl_temp() - get the temperature
+ * @btemp: pointer to the btemp structure
+ *
+ * Returns the batctrl temperature in millidegrees
+ */
+int ab8500_btemp_get_batctrl_temp(struct ab8500_btemp *btemp)
+{
+ return btemp->bat_temp * 1000;
+}
+
+/**
+ * ab8500_btemp_get_property() - get the btemp properties
+ * @psy: pointer to the power_supply structure
+ * @psp: pointer to the power_supply_property structure
+ * @val: pointer to the power_supply_propval union
+ *
+ * This function gets called when an application tries to get the btemp
+ * properties by reading the sysfs files.
+ * online: presence of the battery
+ * present: presence of the battery
+ * technology: battery technology
+ * temp: battery temperature
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8500_btemp_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct ab8500_btemp *di;
+
+ di = to_ab8500_btemp_device_info(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ case POWER_SUPPLY_PROP_ONLINE:
+ if (di->events.batt_rem)
+ val->intval = 0;
+ else
+ val->intval = 1;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = di->bat->bat_type[di->bat->batt_id].name;
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = ab8500_btemp_get_temp(di);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int ab8500_btemp_get_ext_psy_data(struct device *dev, void *data)
+{
+ struct power_supply *psy;
+ struct power_supply *ext;
+ struct ab8500_btemp *di;
+ union power_supply_propval ret;
+ int i, j;
+ bool psy_found = false;
+
+ psy = (struct power_supply *)data;
+ ext = dev_get_drvdata(dev);
+ di = to_ab8500_btemp_device_info(psy);
+
+ /*
+ * For all psy where the name of your driver
+ * appears in any supplied_to
+ */
+ for (i = 0; i < ext->num_supplicants; i++) {
+ if (!strcmp(ext->supplied_to[i], psy->name))
+ psy_found = true;
+ }
+
+ if (!psy_found)
+ return 0;
+
+ /* Go through all properties for the psy */
+ for (j = 0; j < ext->num_properties; j++) {
+ enum power_supply_property prop;
+ prop = ext->properties[j];
+
+ if (ext->get_property(ext, prop, &ret))
+ continue;
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_MAINS:
+ /* AC disconnected */
+ if (!ret.intval && di->events.ac_conn) {
+ di->events.ac_conn = false;
+ }
+ /* AC connected */
+ else if (ret.intval && !di->events.ac_conn) {
+ di->events.ac_conn = true;
+ if (!di->events.usb_conn)
+ ab8500_btemp_periodic(di, true);
+ }
+ break;
+ case POWER_SUPPLY_TYPE_USB:
+ /* USB disconnected */
+ if (!ret.intval && di->events.usb_conn) {
+ di->events.usb_conn = false;
+ }
+ /* USB connected */
+ else if (ret.intval && !di->events.usb_conn) {
+ di->events.usb_conn = true;
+ if (!di->events.ac_conn)
+ ab8500_btemp_periodic(di, true);
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ return 0;
+}
+
+/**
+ * ab8500_btemp_external_power_changed() - callback for power supply changes
+ * @psy: pointer to the structure power_supply
+ *
+ * This function is pointing to the function pointer external_power_changed
+ * of the structure power_supply.
+ * This function gets executed when there is a change in the external power
+ * supply to the btemp.
+ */
+static void ab8500_btemp_external_power_changed(struct power_supply *psy)
+{
+ struct ab8500_btemp *di = to_ab8500_btemp_device_info(psy);
+
+ class_for_each_device(power_supply_class, NULL,
+ &di->btemp_psy, ab8500_btemp_get_ext_psy_data);
+}
+
+/* ab8500 btemp driver interrupts and their respective isr */
+static struct ab8500_btemp_interrupts ab8500_btemp_irq[] = {
+ {"BAT_CTRL_INDB", ab8500_btemp_batctrlindb_handler},
+ {"BTEMP_LOW", ab8500_btemp_templow_handler},
+ {"BTEMP_HIGH", ab8500_btemp_temphigh_handler},
+ {"BTEMP_LOW_MEDIUM", ab8500_btemp_lowmed_handler},
+ {"BTEMP_MEDIUM_HIGH", ab8500_btemp_medhigh_handler},
+};
+
+#if defined(CONFIG_PM)
+static int ab8500_btemp_resume(struct platform_device *pdev)
+{
+ struct ab8500_btemp *di = platform_get_drvdata(pdev);
+
+ ab8500_btemp_periodic(di, true);
+
+ return 0;
+}
+
+static int ab8500_btemp_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct ab8500_btemp *di = platform_get_drvdata(pdev);
+
+ ab8500_btemp_periodic(di, false);
+
+ return 0;
+}
+#else
+#define ab8500_btemp_suspend NULL
+#define ab8500_btemp_resume NULL
+#endif
+
+static int __devexit ab8500_btemp_remove(struct platform_device *pdev)
+{
+ struct ab8500_btemp *di = platform_get_drvdata(pdev);
+ int i, irq;
+
+ /* Disable interrupts */
+ for (i = 0; i < ARRAY_SIZE(ab8500_btemp_irq); i++) {
+ irq = platform_get_irq_byname(pdev, ab8500_btemp_irq[i].name);
+ free_irq(irq, di);
+ }
+
+ /* Delete the work queue */
+ destroy_workqueue(di->btemp_wq);
+
+ flush_scheduled_work();
+ power_supply_unregister(&di->btemp_psy);
+ platform_set_drvdata(pdev, NULL);
+ kfree(di);
+
+ return 0;
+}
+
+static int __devinit ab8500_btemp_probe(struct platform_device *pdev)
+{
+ int irq, i, ret = 0;
+ u8 val;
+ struct abx500_bm_plat_data *plat_data;
+
+ struct ab8500_btemp *di =
+ kzalloc(sizeof(struct ab8500_btemp), GFP_KERNEL);
+ if (!di)
+ return -ENOMEM;
+
+ /* get parent data */
+ di->dev = &pdev->dev;
+ di->parent = dev_get_drvdata(pdev->dev.parent);
+ di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+
+ /* get btemp specific platform data */
+ plat_data = pdev->dev.platform_data;
+ di->pdata = plat_data->btemp;
+ if (!di->pdata) {
+ dev_err(di->dev, "no btemp platform data supplied\n");
+ ret = -EINVAL;
+ goto free_device_info;
+ }
+
+ /* get battery specific platform data */
+ di->bat = plat_data->battery;
+ if (!di->bat) {
+ dev_err(di->dev, "no battery platform data supplied\n");
+ ret = -EINVAL;
+ goto free_device_info;
+ }
+
+ /* BTEMP supply */
+ di->btemp_psy.name = "ab8500_btemp";
+ di->btemp_psy.type = POWER_SUPPLY_TYPE_BATTERY;
+ di->btemp_psy.properties = ab8500_btemp_props;
+ di->btemp_psy.num_properties = ARRAY_SIZE(ab8500_btemp_props);
+ di->btemp_psy.get_property = ab8500_btemp_get_property;
+ di->btemp_psy.supplied_to = di->pdata->supplied_to;
+ di->btemp_psy.num_supplicants = di->pdata->num_supplicants;
+ di->btemp_psy.external_power_changed =
+ ab8500_btemp_external_power_changed;
+
+
+ /* Create a work queue for the btemp */
+ di->btemp_wq =
+ create_singlethread_workqueue("ab8500_btemp_wq");
+ if (di->btemp_wq == NULL) {
+ dev_err(di->dev, "failed to create work queue\n");
+ goto free_device_info;
+ }
+
+ /* Init work for measuring temperature periodically */
+ INIT_DELAYED_WORK_DEFERRABLE(&di->btemp_periodic_work,
+ ab8500_btemp_periodic_work);
+
+ /* Identify the battery */
+ if (ab8500_btemp_id(di) < 0)
+ dev_warn(di->dev, "failed to identify the battery\n");
+
+ /* Set BTEMP thermal limits. Low and Med are fixed */
+ di->btemp_ranges.btemp_low_limit = BTEMP_THERMAL_LOW_LIMIT;
+ di->btemp_ranges.btemp_med_limit = BTEMP_THERMAL_MED_LIMIT;
+
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_BTEMP_HIGH_TH, &val);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ goto free_btemp_wq;
+ }
+ switch (val) {
+ case BTEMP_HIGH_TH_57_0:
+ case BTEMP_HIGH_TH_57_1:
+ di->btemp_ranges.btemp_high_limit =
+ BTEMP_THERMAL_HIGH_LIMIT_57;
+ break;
+ case BTEMP_HIGH_TH_52:
+ di->btemp_ranges.btemp_high_limit =
+ BTEMP_THERMAL_HIGH_LIMIT_52;
+ break;
+ case BTEMP_HIGH_TH_62:
+ di->btemp_ranges.btemp_high_limit =
+ BTEMP_THERMAL_HIGH_LIMIT_62;
+ break;
+ }
+
+ /* Register BTEMP power supply class */
+ ret = power_supply_register(di->dev, &di->btemp_psy);
+ if (ret) {
+ dev_err(di->dev, "failed to register BTEMP psy\n");
+ goto free_btemp_wq;
+ }
+
+ /* Register interrupts */
+ for (i = 0; i < ARRAY_SIZE(ab8500_btemp_irq); i++) {
+ irq = platform_get_irq_byname(pdev, ab8500_btemp_irq[i].name);
+ ret = request_threaded_irq(irq, NULL, ab8500_btemp_irq[i].isr,
+ IRQF_SHARED | IRQF_NO_SUSPEND,
+ ab8500_btemp_irq[i].name, di);
+
+ if (ret) {
+ dev_err(di->dev, "failed to request %s IRQ %d: %d\n"
+ , ab8500_btemp_irq[i].name, irq, ret);
+ goto free_irq;
+ }
+ dev_dbg(di->dev, "Requested %s IRQ %d: %d\n",
+ ab8500_btemp_irq[i].name, irq, ret);
+ }
+
+ platform_set_drvdata(pdev, di);
+
+ /* Kick off periodic temperature measurements */
+ ab8500_btemp_periodic(di, true);
+ list_add_tail(&di->node, &ab8500_btemp_list);
+
+ return ret;
+
+free_irq:
+ power_supply_unregister(&di->btemp_psy);
+
+ /* We also have to free all successfully registered irqs */
+ for (i = i - 1; i >= 0; i--) {
+ irq = platform_get_irq_byname(pdev, ab8500_btemp_irq[i].name);
+ free_irq(irq, di);
+ }
+free_btemp_wq:
+ destroy_workqueue(di->btemp_wq);
+free_device_info:
+ kfree(di);
+
+ return ret;
+}
+
+static struct platform_driver ab8500_btemp_driver = {
+ .probe = ab8500_btemp_probe,
+ .remove = __devexit_p(ab8500_btemp_remove),
+ .suspend = ab8500_btemp_suspend,
+ .resume = ab8500_btemp_resume,
+ .driver = {
+ .name = "ab8500-btemp",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init ab8500_btemp_init(void)
+{
+ return platform_driver_register(&ab8500_btemp_driver);
+}
+
+static void __exit ab8500_btemp_exit(void)
+{
+ platform_driver_unregister(&ab8500_btemp_driver);
+}
+
+device_initcall(ab8500_btemp_init);
+module_exit(ab8500_btemp_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Johan Palsson, Karl Komierowski, Arun R Murthy");
+MODULE_ALIAS("platform:ab8500-btemp");
+MODULE_DESCRIPTION("AB8500 battery temperature driver");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/ab8500_charger.c b/ap/os/linux/linux-3.4.x/drivers/power/ab8500_charger.c
new file mode 100644
index 0000000..e2b4acc
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/ab8500_charger.c
@@ -0,0 +1,2789 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2012
+ *
+ * Charger driver for AB8500
+ *
+ * License Terms: GNU General Public License v2
+ * Author:
+ * Johan Palsson <johan.palsson@stericsson.com>
+ * Karl Komierowski <karl.komierowski@stericsson.com>
+ * Arun R Murthy <arun.murthy@stericsson.com>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/completion.h>
+#include <linux/regulator/consumer.h>
+#include <linux/err.h>
+#include <linux/workqueue.h>
+#include <linux/kobject.h>
+#include <linux/mfd/abx500/ab8500.h>
+#include <linux/mfd/abx500.h>
+#include <linux/mfd/abx500/ab8500-bm.h>
+#include <linux/mfd/abx500/ab8500-gpadc.h>
+#include <linux/mfd/abx500/ux500_chargalg.h>
+#include <linux/usb/otg.h>
+
+/* Charger constants */
+#define NO_PW_CONN 0
+#define AC_PW_CONN 1
+#define USB_PW_CONN 2
+
+#define MAIN_WDOG_ENA 0x01
+#define MAIN_WDOG_KICK 0x02
+#define MAIN_WDOG_DIS 0x00
+#define CHARG_WD_KICK 0x01
+#define MAIN_CH_ENA 0x01
+#define MAIN_CH_NO_OVERSHOOT_ENA_N 0x02
+#define USB_CH_ENA 0x01
+#define USB_CHG_NO_OVERSHOOT_ENA_N 0x02
+#define MAIN_CH_DET 0x01
+#define MAIN_CH_CV_ON 0x04
+#define USB_CH_CV_ON 0x08
+#define VBUS_DET_DBNC100 0x02
+#define VBUS_DET_DBNC1 0x01
+#define OTP_ENABLE_WD 0x01
+
+#define MAIN_CH_INPUT_CURR_SHIFT 4
+#define VBUS_IN_CURR_LIM_SHIFT 4
+
+#define LED_INDICATOR_PWM_ENA 0x01
+#define LED_INDICATOR_PWM_DIS 0x00
+#define LED_IND_CUR_5MA 0x04
+#define LED_INDICATOR_PWM_DUTY_252_256 0xBF
+
+/* HW failure constants */
+#define MAIN_CH_TH_PROT 0x02
+#define VBUS_CH_NOK 0x08
+#define USB_CH_TH_PROT 0x02
+#define VBUS_OVV_TH 0x01
+#define MAIN_CH_NOK 0x01
+#define VBUS_DET 0x80
+
+/* UsbLineStatus register bit masks */
+#define AB8500_USB_LINK_STATUS 0x78
+#define AB8500_STD_HOST_SUSP 0x18
+
+/* Watchdog timeout constant */
+#define WD_TIMER 0x30 /* 4min */
+#define WD_KICK_INTERVAL (60 * HZ)
+
+/* Lowest charger voltage is 3.39V -> 0x4E */
+#define LOW_VOLT_REG 0x4E
+
+/* UsbLineStatus register - usb types */
+enum ab8500_charger_link_status {
+ USB_STAT_NOT_CONFIGURED,
+ USB_STAT_STD_HOST_NC,
+ USB_STAT_STD_HOST_C_NS,
+ USB_STAT_STD_HOST_C_S,
+ USB_STAT_HOST_CHG_NM,
+ USB_STAT_HOST_CHG_HS,
+ USB_STAT_HOST_CHG_HS_CHIRP,
+ USB_STAT_DEDICATED_CHG,
+ USB_STAT_ACA_RID_A,
+ USB_STAT_ACA_RID_B,
+ USB_STAT_ACA_RID_C_NM,
+ USB_STAT_ACA_RID_C_HS,
+ USB_STAT_ACA_RID_C_HS_CHIRP,
+ USB_STAT_HM_IDGND,
+ USB_STAT_RESERVED,
+ USB_STAT_NOT_VALID_LINK,
+};
+
+enum ab8500_usb_state {
+ AB8500_BM_USB_STATE_RESET_HS, /* HighSpeed Reset */
+ AB8500_BM_USB_STATE_RESET_FS, /* FullSpeed/LowSpeed Reset */
+ AB8500_BM_USB_STATE_CONFIGURED,
+ AB8500_BM_USB_STATE_SUSPEND,
+ AB8500_BM_USB_STATE_RESUME,
+ AB8500_BM_USB_STATE_MAX,
+};
+
+/* VBUS input current limits supported in AB8500 in mA */
+#define USB_CH_IP_CUR_LVL_0P05 50
+#define USB_CH_IP_CUR_LVL_0P09 98
+#define USB_CH_IP_CUR_LVL_0P19 193
+#define USB_CH_IP_CUR_LVL_0P29 290
+#define USB_CH_IP_CUR_LVL_0P38 380
+#define USB_CH_IP_CUR_LVL_0P45 450
+#define USB_CH_IP_CUR_LVL_0P5 500
+#define USB_CH_IP_CUR_LVL_0P6 600
+#define USB_CH_IP_CUR_LVL_0P7 700
+#define USB_CH_IP_CUR_LVL_0P8 800
+#define USB_CH_IP_CUR_LVL_0P9 900
+#define USB_CH_IP_CUR_LVL_1P0 1000
+#define USB_CH_IP_CUR_LVL_1P1 1100
+#define USB_CH_IP_CUR_LVL_1P3 1300
+#define USB_CH_IP_CUR_LVL_1P4 1400
+#define USB_CH_IP_CUR_LVL_1P5 1500
+
+#define VBAT_TRESH_IP_CUR_RED 3800
+
+#define to_ab8500_charger_usb_device_info(x) container_of((x), \
+ struct ab8500_charger, usb_chg)
+#define to_ab8500_charger_ac_device_info(x) container_of((x), \
+ struct ab8500_charger, ac_chg)
+
+/**
+ * struct ab8500_charger_interrupts - ab8500 interupts
+ * @name: name of the interrupt
+ * @isr function pointer to the isr
+ */
+struct ab8500_charger_interrupts {
+ char *name;
+ irqreturn_t (*isr)(int irq, void *data);
+};
+
+struct ab8500_charger_info {
+ int charger_connected;
+ int charger_online;
+ int charger_voltage;
+ int cv_active;
+ bool wd_expired;
+};
+
+struct ab8500_charger_event_flags {
+ bool mainextchnotok;
+ bool main_thermal_prot;
+ bool usb_thermal_prot;
+ bool vbus_ovv;
+ bool usbchargernotok;
+ bool chgwdexp;
+ bool vbus_collapse;
+};
+
+struct ab8500_charger_usb_state {
+ bool usb_changed;
+ int usb_current;
+ enum ab8500_usb_state state;
+ spinlock_t usb_lock;
+};
+
+/**
+ * struct ab8500_charger - ab8500 Charger device information
+ * @dev: Pointer to the structure device
+ * @max_usb_in_curr: Max USB charger input current
+ * @vbus_detected: VBUS detected
+ * @vbus_detected_start:
+ * VBUS detected during startup
+ * @ac_conn: This will be true when the AC charger has been plugged
+ * @vddadc_en_ac: Indicate if VDD ADC supply is enabled because AC
+ * charger is enabled
+ * @vddadc_en_usb: Indicate if VDD ADC supply is enabled because USB
+ * charger is enabled
+ * @vbat Battery voltage
+ * @old_vbat Previously measured battery voltage
+ * @autopower Indicate if we should have automatic pwron after pwrloss
+ * @parent: Pointer to the struct ab8500
+ * @gpadc: Pointer to the struct gpadc
+ * @pdata: Pointer to the abx500_charger platform data
+ * @bat: Pointer to the abx500_bm platform data
+ * @flags: Structure for information about events triggered
+ * @usb_state: Structure for usb stack information
+ * @ac_chg: AC charger power supply
+ * @usb_chg: USB charger power supply
+ * @ac: Structure that holds the AC charger properties
+ * @usb: Structure that holds the USB charger properties
+ * @regu: Pointer to the struct regulator
+ * @charger_wq: Work queue for the IRQs and checking HW state
+ * @check_vbat_work Work for checking vbat threshold to adjust vbus current
+ * @check_hw_failure_work: Work for checking HW state
+ * @check_usbchgnotok_work: Work for checking USB charger not ok status
+ * @kick_wd_work: Work for kicking the charger watchdog in case
+ * of ABB rev 1.* due to the watchog logic bug
+ * @ac_work: Work for checking AC charger connection
+ * @detect_usb_type_work: Work for detecting the USB type connected
+ * @usb_link_status_work: Work for checking the new USB link status
+ * @usb_state_changed_work: Work for checking USB state
+ * @check_main_thermal_prot_work:
+ * Work for checking Main thermal status
+ * @check_usb_thermal_prot_work:
+ * Work for checking USB thermal status
+ */
+struct ab8500_charger {
+ struct device *dev;
+ int max_usb_in_curr;
+ bool vbus_detected;
+ bool vbus_detected_start;
+ bool ac_conn;
+ bool vddadc_en_ac;
+ bool vddadc_en_usb;
+ int vbat;
+ int old_vbat;
+ bool autopower;
+ struct ab8500 *parent;
+ struct ab8500_gpadc *gpadc;
+ struct abx500_charger_platform_data *pdata;
+ struct abx500_bm_data *bat;
+ struct ab8500_charger_event_flags flags;
+ struct ab8500_charger_usb_state usb_state;
+ struct ux500_charger ac_chg;
+ struct ux500_charger usb_chg;
+ struct ab8500_charger_info ac;
+ struct ab8500_charger_info usb;
+ struct regulator *regu;
+ struct workqueue_struct *charger_wq;
+ struct delayed_work check_vbat_work;
+ struct delayed_work check_hw_failure_work;
+ struct delayed_work check_usbchgnotok_work;
+ struct delayed_work kick_wd_work;
+ struct work_struct ac_work;
+ struct work_struct detect_usb_type_work;
+ struct work_struct usb_link_status_work;
+ struct work_struct usb_state_changed_work;
+ struct work_struct check_main_thermal_prot_work;
+ struct work_struct check_usb_thermal_prot_work;
+ struct usb_phy *usb_phy;
+ struct notifier_block nb;
+};
+
+/* AC properties */
+static enum power_supply_property ab8500_charger_ac_props[] = {
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+};
+
+/* USB properties */
+static enum power_supply_property ab8500_charger_usb_props[] = {
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+};
+
+/**
+ * ab8500_power_loss_handling - set how we handle powerloss.
+ * @di: pointer to the ab8500_charger structure
+ *
+ * Magic nummbers are from STE HW department.
+ */
+static void ab8500_power_loss_handling(struct ab8500_charger *di)
+{
+ u8 reg;
+ int ret;
+
+ dev_dbg(di->dev, "Autopower : %d\n", di->autopower);
+
+ /* read the autopower register */
+ ret = abx500_get_register_interruptible(di->dev, 0x15, 0x00, ®);
+ if (ret) {
+ dev_err(di->dev, "%d write failed\n", __LINE__);
+ return;
+ }
+
+ /* enable the OPT emulation registers */
+ ret = abx500_set_register_interruptible(di->dev, 0x11, 0x00, 0x2);
+ if (ret) {
+ dev_err(di->dev, "%d write failed\n", __LINE__);
+ return;
+ }
+
+ if (di->autopower)
+ reg |= 0x8;
+ else
+ reg &= ~0x8;
+
+ /* write back the changed value to autopower reg */
+ ret = abx500_set_register_interruptible(di->dev, 0x15, 0x00, reg);
+ if (ret) {
+ dev_err(di->dev, "%d write failed\n", __LINE__);
+ return;
+ }
+
+ /* disable the set OTP registers again */
+ ret = abx500_set_register_interruptible(di->dev, 0x11, 0x00, 0x0);
+ if (ret) {
+ dev_err(di->dev, "%d write failed\n", __LINE__);
+ return;
+ }
+}
+
+/**
+ * ab8500_power_supply_changed - a wrapper with local extentions for
+ * power_supply_changed
+ * @di: pointer to the ab8500_charger structure
+ * @psy: pointer to power_supply_that have changed.
+ *
+ */
+static void ab8500_power_supply_changed(struct ab8500_charger *di,
+ struct power_supply *psy)
+{
+ if (di->pdata->autopower_cfg) {
+ if (!di->usb.charger_connected &&
+ !di->ac.charger_connected &&
+ di->autopower) {
+ di->autopower = false;
+ ab8500_power_loss_handling(di);
+ } else if (!di->autopower &&
+ (di->ac.charger_connected ||
+ di->usb.charger_connected)) {
+ di->autopower = true;
+ ab8500_power_loss_handling(di);
+ }
+ }
+ power_supply_changed(psy);
+}
+
+static void ab8500_charger_set_usb_connected(struct ab8500_charger *di,
+ bool connected)
+{
+ if (connected != di->usb.charger_connected) {
+ dev_dbg(di->dev, "USB connected:%i\n", connected);
+ di->usb.charger_connected = connected;
+ sysfs_notify(&di->usb_chg.psy.dev->kobj, NULL, "present");
+ }
+}
+
+/**
+ * ab8500_charger_get_ac_voltage() - get ac charger voltage
+ * @di: pointer to the ab8500_charger structure
+ *
+ * Returns ac charger voltage (on success)
+ */
+static int ab8500_charger_get_ac_voltage(struct ab8500_charger *di)
+{
+ int vch;
+
+ /* Only measure voltage if the charger is connected */
+ if (di->ac.charger_connected) {
+ vch = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_V);
+ if (vch < 0)
+ dev_err(di->dev, "%s gpadc conv failed,\n", __func__);
+ } else {
+ vch = 0;
+ }
+ return vch;
+}
+
+/**
+ * ab8500_charger_ac_cv() - check if the main charger is in CV mode
+ * @di: pointer to the ab8500_charger structure
+ *
+ * Returns ac charger CV mode (on success) else error code
+ */
+static int ab8500_charger_ac_cv(struct ab8500_charger *di)
+{
+ u8 val;
+ int ret = 0;
+
+ /* Only check CV mode if the charger is online */
+ if (di->ac.charger_online) {
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_STATUS1_REG, &val);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return 0;
+ }
+
+ if (val & MAIN_CH_CV_ON)
+ ret = 1;
+ else
+ ret = 0;
+ }
+
+ return ret;
+}
+
+/**
+ * ab8500_charger_get_vbus_voltage() - get vbus voltage
+ * @di: pointer to the ab8500_charger structure
+ *
+ * This function returns the vbus voltage.
+ * Returns vbus voltage (on success)
+ */
+static int ab8500_charger_get_vbus_voltage(struct ab8500_charger *di)
+{
+ int vch;
+
+ /* Only measure voltage if the charger is connected */
+ if (di->usb.charger_connected) {
+ vch = ab8500_gpadc_convert(di->gpadc, VBUS_V);
+ if (vch < 0)
+ dev_err(di->dev, "%s gpadc conv failed\n", __func__);
+ } else {
+ vch = 0;
+ }
+ return vch;
+}
+
+/**
+ * ab8500_charger_get_usb_current() - get usb charger current
+ * @di: pointer to the ab8500_charger structure
+ *
+ * This function returns the usb charger current.
+ * Returns usb current (on success) and error code on failure
+ */
+static int ab8500_charger_get_usb_current(struct ab8500_charger *di)
+{
+ int ich;
+
+ /* Only measure current if the charger is online */
+ if (di->usb.charger_online) {
+ ich = ab8500_gpadc_convert(di->gpadc, USB_CHARGER_C);
+ if (ich < 0)
+ dev_err(di->dev, "%s gpadc conv failed\n", __func__);
+ } else {
+ ich = 0;
+ }
+ return ich;
+}
+
+/**
+ * ab8500_charger_get_ac_current() - get ac charger current
+ * @di: pointer to the ab8500_charger structure
+ *
+ * This function returns the ac charger current.
+ * Returns ac current (on success) and error code on failure.
+ */
+static int ab8500_charger_get_ac_current(struct ab8500_charger *di)
+{
+ int ich;
+
+ /* Only measure current if the charger is online */
+ if (di->ac.charger_online) {
+ ich = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_C);
+ if (ich < 0)
+ dev_err(di->dev, "%s gpadc conv failed\n", __func__);
+ } else {
+ ich = 0;
+ }
+ return ich;
+}
+
+/**
+ * ab8500_charger_usb_cv() - check if the usb charger is in CV mode
+ * @di: pointer to the ab8500_charger structure
+ *
+ * Returns ac charger CV mode (on success) else error code
+ */
+static int ab8500_charger_usb_cv(struct ab8500_charger *di)
+{
+ int ret;
+ u8 val;
+
+ /* Only check CV mode if the charger is online */
+ if (di->usb.charger_online) {
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_USBCH_STAT1_REG, &val);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return 0;
+ }
+
+ if (val & USB_CH_CV_ON)
+ ret = 1;
+ else
+ ret = 0;
+ } else {
+ ret = 0;
+ }
+
+ return ret;
+}
+
+/**
+ * ab8500_charger_detect_chargers() - Detect the connected chargers
+ * @di: pointer to the ab8500_charger structure
+ *
+ * Returns the type of charger connected.
+ * For USB it will not mean we can actually charge from it
+ * but that there is a USB cable connected that we have to
+ * identify. This is used during startup when we don't get
+ * interrupts of the charger detection
+ *
+ * Returns an integer value, that means,
+ * NO_PW_CONN no power supply is connected
+ * AC_PW_CONN if the AC power supply is connected
+ * USB_PW_CONN if the USB power supply is connected
+ * AC_PW_CONN + USB_PW_CONN if USB and AC power supplies are both connected
+ */
+static int ab8500_charger_detect_chargers(struct ab8500_charger *di)
+{
+ int result = NO_PW_CONN;
+ int ret;
+ u8 val;
+
+ /* Check for AC charger */
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_STATUS1_REG, &val);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return ret;
+ }
+
+ if (val & MAIN_CH_DET)
+ result = AC_PW_CONN;
+
+ /* Check for USB charger */
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_USBCH_STAT1_REG, &val);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return ret;
+ }
+
+ if ((val & VBUS_DET_DBNC1) && (val & VBUS_DET_DBNC100))
+ result |= USB_PW_CONN;
+
+ return result;
+}
+
+/**
+ * ab8500_charger_max_usb_curr() - get the max curr for the USB type
+ * @di: pointer to the ab8500_charger structure
+ * @link_status: the identified USB type
+ *
+ * Get the maximum current that is allowed to be drawn from the host
+ * based on the USB type.
+ * Returns error code in case of failure else 0 on success
+ */
+static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
+ enum ab8500_charger_link_status link_status)
+{
+ int ret = 0;
+
+ switch (link_status) {
+ case USB_STAT_STD_HOST_NC:
+ case USB_STAT_STD_HOST_C_NS:
+ case USB_STAT_STD_HOST_C_S:
+ dev_dbg(di->dev, "USB Type - Standard host is "
+ "detected through USB driver\n");
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P09;
+ break;
+ case USB_STAT_HOST_CHG_HS_CHIRP:
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
+ break;
+ case USB_STAT_HOST_CHG_HS:
+ case USB_STAT_ACA_RID_C_HS:
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P9;
+ break;
+ case USB_STAT_ACA_RID_A:
+ /*
+ * Dedicated charger level minus maximum current accessory
+ * can consume (300mA). Closest level is 1100mA
+ */
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P1;
+ break;
+ case USB_STAT_ACA_RID_B:
+ /*
+ * Dedicated charger level minus 120mA (20mA for ACA and
+ * 100mA for potential accessory). Closest level is 1300mA
+ */
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P3;
+ break;
+ case USB_STAT_DEDICATED_CHG:
+ case USB_STAT_HOST_CHG_NM:
+ case USB_STAT_ACA_RID_C_HS_CHIRP:
+ case USB_STAT_ACA_RID_C_NM:
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P5;
+ break;
+ case USB_STAT_RESERVED:
+ /*
+ * This state is used to indicate that VBUS has dropped below
+ * the detection level 4 times in a row. This is due to the
+ * charger output current is set to high making the charger
+ * voltage collapse. This have to be propagated through to
+ * chargalg. This is done using the property
+ * POWER_SUPPLY_PROP_CURRENT_AVG = 1
+ */
+ di->flags.vbus_collapse = true;
+ dev_dbg(di->dev, "USB Type - USB_STAT_RESERVED "
+ "VBUS has collapsed\n");
+ ret = -1;
+ break;
+ case USB_STAT_HM_IDGND:
+ case USB_STAT_NOT_CONFIGURED:
+ case USB_STAT_NOT_VALID_LINK:
+ dev_err(di->dev, "USB Type - Charging not allowed\n");
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
+ ret = -ENXIO;
+ break;
+ default:
+ dev_err(di->dev, "USB Type - Unknown\n");
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
+ ret = -ENXIO;
+ break;
+ };
+
+ dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d",
+ link_status, di->max_usb_in_curr);
+
+ return ret;
+}
+
+/**
+ * ab8500_charger_read_usb_type() - read the type of usb connected
+ * @di: pointer to the ab8500_charger structure
+ *
+ * Detect the type of the plugged USB
+ * Returns error code in case of failure else 0 on success
+ */
+static int ab8500_charger_read_usb_type(struct ab8500_charger *di)
+{
+ int ret;
+ u8 val;
+
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_INTERRUPT, AB8500_IT_SOURCE21_REG, &val);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return ret;
+ }
+ ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
+ AB8500_USB_LINE_STAT_REG, &val);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return ret;
+ }
+
+ /* get the USB type */
+ val = (val & AB8500_USB_LINK_STATUS) >> 3;
+ ret = ab8500_charger_max_usb_curr(di,
+ (enum ab8500_charger_link_status) val);
+
+ return ret;
+}
+
+/**
+ * ab8500_charger_detect_usb_type() - get the type of usb connected
+ * @di: pointer to the ab8500_charger structure
+ *
+ * Detect the type of the plugged USB
+ * Returns error code in case of failure else 0 on success
+ */
+static int ab8500_charger_detect_usb_type(struct ab8500_charger *di)
+{
+ int i, ret;
+ u8 val;
+
+ /*
+ * On getting the VBUS rising edge detect interrupt there
+ * is a 250ms delay after which the register UsbLineStatus
+ * is filled with valid data.
+ */
+ for (i = 0; i < 10; i++) {
+ msleep(250);
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_INTERRUPT, AB8500_IT_SOURCE21_REG,
+ &val);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return ret;
+ }
+ ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
+ AB8500_USB_LINE_STAT_REG, &val);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return ret;
+ }
+ /*
+ * Until the IT source register is read the UsbLineStatus
+ * register is not updated, hence doing the same
+ * Revisit this:
+ */
+
+ /* get the USB type */
+ val = (val & AB8500_USB_LINK_STATUS) >> 3;
+ if (val)
+ break;
+ }
+ ret = ab8500_charger_max_usb_curr(di,
+ (enum ab8500_charger_link_status) val);
+
+ return ret;
+}
+
+/*
+ * This array maps the raw hex value to charger voltage used by the AB8500
+ * Values taken from the UM0836
+ */
+static int ab8500_charger_voltage_map[] = {
+ 3500 ,
+ 3525 ,
+ 3550 ,
+ 3575 ,
+ 3600 ,
+ 3625 ,
+ 3650 ,
+ 3675 ,
+ 3700 ,
+ 3725 ,
+ 3750 ,
+ 3775 ,
+ 3800 ,
+ 3825 ,
+ 3850 ,
+ 3875 ,
+ 3900 ,
+ 3925 ,
+ 3950 ,
+ 3975 ,
+ 4000 ,
+ 4025 ,
+ 4050 ,
+ 4060 ,
+ 4070 ,
+ 4080 ,
+ 4090 ,
+ 4100 ,
+ 4110 ,
+ 4120 ,
+ 4130 ,
+ 4140 ,
+ 4150 ,
+ 4160 ,
+ 4170 ,
+ 4180 ,
+ 4190 ,
+ 4200 ,
+ 4210 ,
+ 4220 ,
+ 4230 ,
+ 4240 ,
+ 4250 ,
+ 4260 ,
+ 4270 ,
+ 4280 ,
+ 4290 ,
+ 4300 ,
+ 4310 ,
+ 4320 ,
+ 4330 ,
+ 4340 ,
+ 4350 ,
+ 4360 ,
+ 4370 ,
+ 4380 ,
+ 4390 ,
+ 4400 ,
+ 4410 ,
+ 4420 ,
+ 4430 ,
+ 4440 ,
+ 4450 ,
+ 4460 ,
+ 4470 ,
+ 4480 ,
+ 4490 ,
+ 4500 ,
+ 4510 ,
+ 4520 ,
+ 4530 ,
+ 4540 ,
+ 4550 ,
+ 4560 ,
+ 4570 ,
+ 4580 ,
+ 4590 ,
+ 4600 ,
+};
+
+/*
+ * This array maps the raw hex value to charger current used by the AB8500
+ * Values taken from the UM0836
+ */
+static int ab8500_charger_current_map[] = {
+ 100 ,
+ 200 ,
+ 300 ,
+ 400 ,
+ 500 ,
+ 600 ,
+ 700 ,
+ 800 ,
+ 900 ,
+ 1000 ,
+ 1100 ,
+ 1200 ,
+ 1300 ,
+ 1400 ,
+ 1500 ,
+};
+
+/*
+ * This array maps the raw hex value to VBUS input current used by the AB8500
+ * Values taken from the UM0836
+ */
+static int ab8500_charger_vbus_in_curr_map[] = {
+ USB_CH_IP_CUR_LVL_0P05,
+ USB_CH_IP_CUR_LVL_0P09,
+ USB_CH_IP_CUR_LVL_0P19,
+ USB_CH_IP_CUR_LVL_0P29,
+ USB_CH_IP_CUR_LVL_0P38,
+ USB_CH_IP_CUR_LVL_0P45,
+ USB_CH_IP_CUR_LVL_0P5,
+ USB_CH_IP_CUR_LVL_0P6,
+ USB_CH_IP_CUR_LVL_0P7,
+ USB_CH_IP_CUR_LVL_0P8,
+ USB_CH_IP_CUR_LVL_0P9,
+ USB_CH_IP_CUR_LVL_1P0,
+ USB_CH_IP_CUR_LVL_1P1,
+ USB_CH_IP_CUR_LVL_1P3,
+ USB_CH_IP_CUR_LVL_1P4,
+ USB_CH_IP_CUR_LVL_1P5,
+};
+
+static int ab8500_voltage_to_regval(int voltage)
+{
+ int i;
+
+ /* Special case for voltage below 3.5V */
+ if (voltage < ab8500_charger_voltage_map[0])
+ return LOW_VOLT_REG;
+
+ for (i = 1; i < ARRAY_SIZE(ab8500_charger_voltage_map); i++) {
+ if (voltage < ab8500_charger_voltage_map[i])
+ return i - 1;
+ }
+
+ /* If not last element, return error */
+ i = ARRAY_SIZE(ab8500_charger_voltage_map) - 1;
+ if (voltage == ab8500_charger_voltage_map[i])
+ return i;
+ else
+ return -1;
+}
+
+static int ab8500_current_to_regval(int curr)
+{
+ int i;
+
+ if (curr < ab8500_charger_current_map[0])
+ return 0;
+
+ for (i = 0; i < ARRAY_SIZE(ab8500_charger_current_map); i++) {
+ if (curr < ab8500_charger_current_map[i])
+ return i - 1;
+ }
+
+ /* If not last element, return error */
+ i = ARRAY_SIZE(ab8500_charger_current_map) - 1;
+ if (curr == ab8500_charger_current_map[i])
+ return i;
+ else
+ return -1;
+}
+
+static int ab8500_vbus_in_curr_to_regval(int curr)
+{
+ int i;
+
+ if (curr < ab8500_charger_vbus_in_curr_map[0])
+ return 0;
+
+ for (i = 0; i < ARRAY_SIZE(ab8500_charger_vbus_in_curr_map); i++) {
+ if (curr < ab8500_charger_vbus_in_curr_map[i])
+ return i - 1;
+ }
+
+ /* If not last element, return error */
+ i = ARRAY_SIZE(ab8500_charger_vbus_in_curr_map) - 1;
+ if (curr == ab8500_charger_vbus_in_curr_map[i])
+ return i;
+ else
+ return -1;
+}
+
+/**
+ * ab8500_charger_get_usb_cur() - get usb current
+ * @di: pointer to the ab8500_charger structre
+ *
+ * The usb stack provides the maximum current that can be drawn from
+ * the standard usb host. This will be in mA.
+ * This function converts current in mA to a value that can be written
+ * to the register. Returns -1 if charging is not allowed
+ */
+static int ab8500_charger_get_usb_cur(struct ab8500_charger *di)
+{
+ switch (di->usb_state.usb_current) {
+ case 100:
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P09;
+ break;
+ case 200:
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P19;
+ break;
+ case 300:
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P29;
+ break;
+ case 400:
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P38;
+ break;
+ case 500:
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
+ break;
+ default:
+ di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
+ return -1;
+ break;
+ };
+ return 0;
+}
+
+/**
+ * ab8500_charger_set_vbus_in_curr() - set VBUS input current limit
+ * @di: pointer to the ab8500_charger structure
+ * @ich_in: charger input current limit
+ *
+ * Sets the current that can be drawn from the USB host
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8500_charger_set_vbus_in_curr(struct ab8500_charger *di,
+ int ich_in)
+{
+ int ret;
+ int input_curr_index;
+ int min_value;
+
+ /* We should always use to lowest current limit */
+ min_value = min(di->bat->chg_params->usb_curr_max, ich_in);
+
+ switch (min_value) {
+ case 100:
+ if (di->vbat < VBAT_TRESH_IP_CUR_RED)
+ min_value = USB_CH_IP_CUR_LVL_0P05;
+ break;
+ case 500:
+ if (di->vbat < VBAT_TRESH_IP_CUR_RED)
+ min_value = USB_CH_IP_CUR_LVL_0P45;
+ break;
+ default:
+ break;
+ }
+
+ input_curr_index = ab8500_vbus_in_curr_to_regval(min_value);
+ if (input_curr_index < 0) {
+ dev_err(di->dev, "VBUS input current limit too high\n");
+ return -ENXIO;
+ }
+
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_USBCH_IPT_CRNTLVL_REG,
+ input_curr_index << VBUS_IN_CURR_LIM_SHIFT);
+ if (ret)
+ dev_err(di->dev, "%s write failed\n", __func__);
+
+ return ret;
+}
+
+/**
+ * ab8500_charger_led_en() - turn on/off chargign led
+ * @di: pointer to the ab8500_charger structure
+ * @on: flag to turn on/off the chargign led
+ *
+ * Power ON/OFF charging LED indication
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8500_charger_led_en(struct ab8500_charger *di, int on)
+{
+ int ret;
+
+ if (on) {
+ /* Power ON charging LED indicator, set LED current to 5mA */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_LED_INDICATOR_PWM_CTRL,
+ (LED_IND_CUR_5MA | LED_INDICATOR_PWM_ENA));
+ if (ret) {
+ dev_err(di->dev, "Power ON LED failed\n");
+ return ret;
+ }
+ /* LED indicator PWM duty cycle 252/256 */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_LED_INDICATOR_PWM_DUTY,
+ LED_INDICATOR_PWM_DUTY_252_256);
+ if (ret) {
+ dev_err(di->dev, "Set LED PWM duty cycle failed\n");
+ return ret;
+ }
+ } else {
+ /* Power off charging LED indicator */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_LED_INDICATOR_PWM_CTRL,
+ LED_INDICATOR_PWM_DIS);
+ if (ret) {
+ dev_err(di->dev, "Power-off LED failed\n");
+ return ret;
+ }
+ }
+
+ return ret;
+}
+
+/**
+ * ab8500_charger_ac_en() - enable or disable ac charging
+ * @di: pointer to the ab8500_charger structure
+ * @enable: enable/disable flag
+ * @vset: charging voltage
+ * @iset: charging current
+ *
+ * Enable/Disable AC/Mains charging and turns on/off the charging led
+ * respectively.
+ **/
+static int ab8500_charger_ac_en(struct ux500_charger *charger,
+ int enable, int vset, int iset)
+{
+ int ret;
+ int volt_index;
+ int curr_index;
+ int input_curr_index;
+ u8 overshoot = 0;
+
+ struct ab8500_charger *di = to_ab8500_charger_ac_device_info(charger);
+
+ if (enable) {
+ /* Check if AC is connected */
+ if (!di->ac.charger_connected) {
+ dev_err(di->dev, "AC charger not connected\n");
+ return -ENXIO;
+ }
+
+ /* Enable AC charging */
+ dev_dbg(di->dev, "Enable AC: %dmV %dmA\n", vset, iset);
+
+ /*
+ * Due to a bug in AB8500, BTEMP_HIGH/LOW interrupts
+ * will be triggered everytime we enable the VDD ADC supply.
+ * This will turn off charging for a short while.
+ * It can be avoided by having the supply on when
+ * there is a charger enabled. Normally the VDD ADC supply
+ * is enabled everytime a GPADC conversion is triggered. We will
+ * force it to be enabled from this driver to have
+ * the GPADC module independant of the AB8500 chargers
+ */
+ if (!di->vddadc_en_ac) {
+ regulator_enable(di->regu);
+ di->vddadc_en_ac = true;
+ }
+
+ /* Check if the requested voltage or current is valid */
+ volt_index = ab8500_voltage_to_regval(vset);
+ curr_index = ab8500_current_to_regval(iset);
+ input_curr_index = ab8500_current_to_regval(
+ di->bat->chg_params->ac_curr_max);
+ if (volt_index < 0 || curr_index < 0 || input_curr_index < 0) {
+ dev_err(di->dev,
+ "Charger voltage or current too high, "
+ "charging not started\n");
+ return -ENXIO;
+ }
+
+ /* ChVoltLevel: maximum battery charging voltage */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_VOLT_LVL_REG, (u8) volt_index);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ return ret;
+ }
+ /* MainChInputCurr: current that can be drawn from the charger*/
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_MCH_IPT_CURLVL_REG,
+ input_curr_index << MAIN_CH_INPUT_CURR_SHIFT);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ return ret;
+ }
+ /* ChOutputCurentLevel: protected output current */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_OPT_CRNTLVL_REG, (u8) curr_index);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ return ret;
+ }
+
+ /* Check if VBAT overshoot control should be enabled */
+ if (!di->bat->enable_overshoot)
+ overshoot = MAIN_CH_NO_OVERSHOOT_ENA_N;
+
+ /* Enable Main Charger */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_MCH_CTRL1, MAIN_CH_ENA | overshoot);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ return ret;
+ }
+
+ /* Power on charging LED indication */
+ ret = ab8500_charger_led_en(di, true);
+ if (ret < 0)
+ dev_err(di->dev, "failed to enable LED\n");
+
+ di->ac.charger_online = 1;
+ } else {
+ /* Disable AC charging */
+ if (is_ab8500_1p1_or_earlier(di->parent)) {
+ /*
+ * For ABB revision 1.0 and 1.1 there is a bug in the
+ * watchdog logic. That means we have to continously
+ * kick the charger watchdog even when no charger is
+ * connected. This is only valid once the AC charger
+ * has been enabled. This is a bug that is not handled
+ * by the algorithm and the watchdog have to be kicked
+ * by the charger driver when the AC charger
+ * is disabled
+ */
+ if (di->ac_conn) {
+ queue_delayed_work(di->charger_wq,
+ &di->kick_wd_work,
+ round_jiffies(WD_KICK_INTERVAL));
+ }
+
+ /*
+ * We can't turn off charging completely
+ * due to a bug in AB8500 cut1.
+ * If we do, charging will not start again.
+ * That is why we set the lowest voltage
+ * and current possible
+ */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER,
+ AB8500_CH_VOLT_LVL_REG, CH_VOL_LVL_3P5);
+ if (ret) {
+ dev_err(di->dev,
+ "%s write failed\n", __func__);
+ return ret;
+ }
+
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER,
+ AB8500_CH_OPT_CRNTLVL_REG, CH_OP_CUR_LVL_0P1);
+ if (ret) {
+ dev_err(di->dev,
+ "%s write failed\n", __func__);
+ return ret;
+ }
+ } else {
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER,
+ AB8500_MCH_CTRL1, 0);
+ if (ret) {
+ dev_err(di->dev,
+ "%s write failed\n", __func__);
+ return ret;
+ }
+ }
+
+ ret = ab8500_charger_led_en(di, false);
+ if (ret < 0)
+ dev_err(di->dev, "failed to disable LED\n");
+
+ di->ac.charger_online = 0;
+ di->ac.wd_expired = false;
+
+ /* Disable regulator if enabled */
+ if (di->vddadc_en_ac) {
+ regulator_disable(di->regu);
+ di->vddadc_en_ac = false;
+ }
+
+ dev_dbg(di->dev, "%s Disabled AC charging\n", __func__);
+ }
+ ab8500_power_supply_changed(di, &di->ac_chg.psy);
+
+ return ret;
+}
+
+/**
+ * ab8500_charger_usb_en() - enable usb charging
+ * @di: pointer to the ab8500_charger structure
+ * @enable: enable/disable flag
+ * @vset: charging voltage
+ * @ich_out: charger output current
+ *
+ * Enable/Disable USB charging and turns on/off the charging led respectively.
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8500_charger_usb_en(struct ux500_charger *charger,
+ int enable, int vset, int ich_out)
+{
+ int ret;
+ int volt_index;
+ int curr_index;
+ u8 overshoot = 0;
+
+ struct ab8500_charger *di = to_ab8500_charger_usb_device_info(charger);
+
+ if (enable) {
+ /* Check if USB is connected */
+ if (!di->usb.charger_connected) {
+ dev_err(di->dev, "USB charger not connected\n");
+ return -ENXIO;
+ }
+
+ /*
+ * Due to a bug in AB8500, BTEMP_HIGH/LOW interrupts
+ * will be triggered everytime we enable the VDD ADC supply.
+ * This will turn off charging for a short while.
+ * It can be avoided by having the supply on when
+ * there is a charger enabled. Normally the VDD ADC supply
+ * is enabled everytime a GPADC conversion is triggered. We will
+ * force it to be enabled from this driver to have
+ * the GPADC module independant of the AB8500 chargers
+ */
+ if (!di->vddadc_en_usb) {
+ regulator_enable(di->regu);
+ di->vddadc_en_usb = true;
+ }
+
+ /* Enable USB charging */
+ dev_dbg(di->dev, "Enable USB: %dmV %dmA\n", vset, ich_out);
+
+ /* Check if the requested voltage or current is valid */
+ volt_index = ab8500_voltage_to_regval(vset);
+ curr_index = ab8500_current_to_regval(ich_out);
+ if (volt_index < 0 || curr_index < 0) {
+ dev_err(di->dev,
+ "Charger voltage or current too high, "
+ "charging not started\n");
+ return -ENXIO;
+ }
+
+ /* ChVoltLevel: max voltage upto which battery can be charged */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_VOLT_LVL_REG, (u8) volt_index);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ return ret;
+ }
+ /* USBChInputCurr: current that can be drawn from the usb */
+ ret = ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr);
+ if (ret) {
+ dev_err(di->dev, "setting USBChInputCurr failed\n");
+ return ret;
+ }
+ /* ChOutputCurentLevel: protected output current */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_OPT_CRNTLVL_REG, (u8) curr_index);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ return ret;
+ }
+ /* Check if VBAT overshoot control should be enabled */
+ if (!di->bat->enable_overshoot)
+ overshoot = USB_CHG_NO_OVERSHOOT_ENA_N;
+
+ /* Enable USB Charger */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_USBCH_CTRL1_REG, USB_CH_ENA | overshoot);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ return ret;
+ }
+
+ /* If success power on charging LED indication */
+ ret = ab8500_charger_led_en(di, true);
+ if (ret < 0)
+ dev_err(di->dev, "failed to enable LED\n");
+
+ queue_delayed_work(di->charger_wq, &di->check_vbat_work, HZ);
+
+ di->usb.charger_online = 1;
+ } else {
+ /* Disable USB charging */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER,
+ AB8500_USBCH_CTRL1_REG, 0);
+ if (ret) {
+ dev_err(di->dev,
+ "%s write failed\n", __func__);
+ return ret;
+ }
+
+ ret = ab8500_charger_led_en(di, false);
+ if (ret < 0)
+ dev_err(di->dev, "failed to disable LED\n");
+
+ di->usb.charger_online = 0;
+ di->usb.wd_expired = false;
+
+ /* Disable regulator if enabled */
+ if (di->vddadc_en_usb) {
+ regulator_disable(di->regu);
+ di->vddadc_en_usb = false;
+ }
+
+ dev_dbg(di->dev, "%s Disabled USB charging\n", __func__);
+
+ /* Cancel any pending Vbat check work */
+ if (delayed_work_pending(&di->check_vbat_work))
+ cancel_delayed_work(&di->check_vbat_work);
+
+ }
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+
+ return ret;
+}
+
+/**
+ * ab8500_charger_watchdog_kick() - kick charger watchdog
+ * @di: pointer to the ab8500_charger structure
+ *
+ * Kick charger watchdog
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8500_charger_watchdog_kick(struct ux500_charger *charger)
+{
+ int ret;
+ struct ab8500_charger *di;
+
+ if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS)
+ di = to_ab8500_charger_ac_device_info(charger);
+ else if (charger->psy.type == POWER_SUPPLY_TYPE_USB)
+ di = to_ab8500_charger_usb_device_info(charger);
+ else
+ return -ENXIO;
+
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CHARG_WD_CTRL, CHARG_WD_KICK);
+ if (ret)
+ dev_err(di->dev, "Failed to kick WD!\n");
+
+ return ret;
+}
+
+/**
+ * ab8500_charger_update_charger_current() - update charger current
+ * @di: pointer to the ab8500_charger structure
+ *
+ * Update the charger output current for the specified charger
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8500_charger_update_charger_current(struct ux500_charger *charger,
+ int ich_out)
+{
+ int ret;
+ int curr_index;
+ struct ab8500_charger *di;
+
+ if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS)
+ di = to_ab8500_charger_ac_device_info(charger);
+ else if (charger->psy.type == POWER_SUPPLY_TYPE_USB)
+ di = to_ab8500_charger_usb_device_info(charger);
+ else
+ return -ENXIO;
+
+ curr_index = ab8500_current_to_regval(ich_out);
+ if (curr_index < 0) {
+ dev_err(di->dev,
+ "Charger current too high, "
+ "charging not started\n");
+ return -ENXIO;
+ }
+
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_OPT_CRNTLVL_REG, (u8) curr_index);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ return ret;
+ }
+
+ /* Reset the main and usb drop input current measurement counter */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CHARGER_CTRL,
+ 0x1);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int ab8500_charger_get_ext_psy_data(struct device *dev, void *data)
+{
+ struct power_supply *psy;
+ struct power_supply *ext;
+ struct ab8500_charger *di;
+ union power_supply_propval ret;
+ int i, j;
+ bool psy_found = false;
+ struct ux500_charger *usb_chg;
+
+ usb_chg = (struct ux500_charger *)data;
+ psy = &usb_chg->psy;
+
+ di = to_ab8500_charger_usb_device_info(usb_chg);
+
+ ext = dev_get_drvdata(dev);
+
+ /* For all psy where the driver name appears in any supplied_to */
+ for (i = 0; i < ext->num_supplicants; i++) {
+ if (!strcmp(ext->supplied_to[i], psy->name))
+ psy_found = true;
+ }
+
+ if (!psy_found)
+ return 0;
+
+ /* Go through all properties for the psy */
+ for (j = 0; j < ext->num_properties; j++) {
+ enum power_supply_property prop;
+ prop = ext->properties[j];
+
+ if (ext->get_property(ext, prop, &ret))
+ continue;
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_BATTERY:
+ di->vbat = ret.intval / 1000;
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ return 0;
+}
+
+/**
+ * ab8500_charger_check_vbat_work() - keep vbus current within spec
+ * @work pointer to the work_struct structure
+ *
+ * Due to a asic bug it is necessary to lower the input current to the vbus
+ * charger when charging with at some specific levels. This issue is only valid
+ * for below a certain battery voltage. This function makes sure that the
+ * the allowed current limit isn't exceeded.
+ */
+static void ab8500_charger_check_vbat_work(struct work_struct *work)
+{
+ int t = 10;
+ struct ab8500_charger *di = container_of(work,
+ struct ab8500_charger, check_vbat_work.work);
+
+ class_for_each_device(power_supply_class, NULL,
+ &di->usb_chg.psy, ab8500_charger_get_ext_psy_data);
+
+ /* First run old_vbat is 0. */
+ if (di->old_vbat == 0)
+ di->old_vbat = di->vbat;
+
+ if (!((di->old_vbat <= VBAT_TRESH_IP_CUR_RED &&
+ di->vbat <= VBAT_TRESH_IP_CUR_RED) ||
+ (di->old_vbat > VBAT_TRESH_IP_CUR_RED &&
+ di->vbat > VBAT_TRESH_IP_CUR_RED))) {
+
+ dev_dbg(di->dev, "Vbat did cross threshold, curr: %d, new: %d,"
+ " old: %d\n", di->max_usb_in_curr, di->vbat,
+ di->old_vbat);
+ ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr);
+ power_supply_changed(&di->usb_chg.psy);
+ }
+
+ di->old_vbat = di->vbat;
+
+ /*
+ * No need to check the battery voltage every second when not close to
+ * the threshold.
+ */
+ if (di->vbat < (VBAT_TRESH_IP_CUR_RED + 100) &&
+ (di->vbat > (VBAT_TRESH_IP_CUR_RED - 100)))
+ t = 1;
+
+ queue_delayed_work(di->charger_wq, &di->check_vbat_work, t * HZ);
+}
+
+/**
+ * ab8500_charger_check_hw_failure_work() - check main charger failure
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for checking the main charger status
+ */
+static void ab8500_charger_check_hw_failure_work(struct work_struct *work)
+{
+ int ret;
+ u8 reg_value;
+
+ struct ab8500_charger *di = container_of(work,
+ struct ab8500_charger, check_hw_failure_work.work);
+
+ /* Check if the status bits for HW failure is still active */
+ if (di->flags.mainextchnotok) {
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CH_STATUS2_REG, ®_value);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return;
+ }
+ if (!(reg_value & MAIN_CH_NOK)) {
+ di->flags.mainextchnotok = false;
+ ab8500_power_supply_changed(di, &di->ac_chg.psy);
+ }
+ }
+ if (di->flags.vbus_ovv) {
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG,
+ ®_value);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return;
+ }
+ if (!(reg_value & VBUS_OVV_TH)) {
+ di->flags.vbus_ovv = false;
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+ }
+ }
+ /* If we still have a failure, schedule a new check */
+ if (di->flags.mainextchnotok || di->flags.vbus_ovv) {
+ queue_delayed_work(di->charger_wq,
+ &di->check_hw_failure_work, round_jiffies(HZ));
+ }
+}
+
+/**
+ * ab8500_charger_kick_watchdog_work() - kick the watchdog
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for kicking the charger watchdog.
+ *
+ * For ABB revision 1.0 and 1.1 there is a bug in the watchdog
+ * logic. That means we have to continously kick the charger
+ * watchdog even when no charger is connected. This is only
+ * valid once the AC charger has been enabled. This is
+ * a bug that is not handled by the algorithm and the
+ * watchdog have to be kicked by the charger driver
+ * when the AC charger is disabled
+ */
+static void ab8500_charger_kick_watchdog_work(struct work_struct *work)
+{
+ int ret;
+
+ struct ab8500_charger *di = container_of(work,
+ struct ab8500_charger, kick_wd_work.work);
+
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CHARG_WD_CTRL, CHARG_WD_KICK);
+ if (ret)
+ dev_err(di->dev, "Failed to kick WD!\n");
+
+ /* Schedule a new watchdog kick */
+ queue_delayed_work(di->charger_wq,
+ &di->kick_wd_work, round_jiffies(WD_KICK_INTERVAL));
+}
+
+/**
+ * ab8500_charger_ac_work() - work to get and set main charger status
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for checking the main charger status
+ */
+static void ab8500_charger_ac_work(struct work_struct *work)
+{
+ int ret;
+
+ struct ab8500_charger *di = container_of(work,
+ struct ab8500_charger, ac_work);
+
+ /*
+ * Since we can't be sure that the events are received
+ * synchronously, we have the check if the main charger is
+ * connected by reading the status register
+ */
+ ret = ab8500_charger_detect_chargers(di);
+ if (ret < 0)
+ return;
+
+ if (ret & AC_PW_CONN) {
+ di->ac.charger_connected = 1;
+ di->ac_conn = true;
+ } else {
+ di->ac.charger_connected = 0;
+ }
+
+ ab8500_power_supply_changed(di, &di->ac_chg.psy);
+ sysfs_notify(&di->ac_chg.psy.dev->kobj, NULL, "present");
+}
+
+/**
+ * ab8500_charger_detect_usb_type_work() - work to detect USB type
+ * @work: Pointer to the work_struct structure
+ *
+ * Detect the type of USB plugged
+ */
+static void ab8500_charger_detect_usb_type_work(struct work_struct *work)
+{
+ int ret;
+
+ struct ab8500_charger *di = container_of(work,
+ struct ab8500_charger, detect_usb_type_work);
+
+ /*
+ * Since we can't be sure that the events are received
+ * synchronously, we have the check if is
+ * connected by reading the status register
+ */
+ ret = ab8500_charger_detect_chargers(di);
+ if (ret < 0)
+ return;
+
+ if (!(ret & USB_PW_CONN)) {
+ di->vbus_detected = 0;
+ ab8500_charger_set_usb_connected(di, false);
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+ } else {
+ di->vbus_detected = 1;
+
+ if (is_ab8500_1p1_or_earlier(di->parent)) {
+ ret = ab8500_charger_detect_usb_type(di);
+ if (!ret) {
+ ab8500_charger_set_usb_connected(di, true);
+ ab8500_power_supply_changed(di,
+ &di->usb_chg.psy);
+ }
+ } else {
+ /* For ABB cut2.0 and onwards we have an IRQ,
+ * USB_LINK_STATUS that will be triggered when the USB
+ * link status changes. The exception is USB connected
+ * during startup. Then we don't get a
+ * USB_LINK_STATUS IRQ
+ */
+ if (di->vbus_detected_start) {
+ di->vbus_detected_start = false;
+ ret = ab8500_charger_detect_usb_type(di);
+ if (!ret) {
+ ab8500_charger_set_usb_connected(di,
+ true);
+ ab8500_power_supply_changed(di,
+ &di->usb_chg.psy);
+ }
+ }
+ }
+ }
+}
+
+/**
+ * ab8500_charger_usb_link_status_work() - work to detect USB type
+ * @work: pointer to the work_struct structure
+ *
+ * Detect the type of USB plugged
+ */
+static void ab8500_charger_usb_link_status_work(struct work_struct *work)
+{
+ int ret;
+
+ struct ab8500_charger *di = container_of(work,
+ struct ab8500_charger, usb_link_status_work);
+
+ /*
+ * Since we can't be sure that the events are received
+ * synchronously, we have the check if is
+ * connected by reading the status register
+ */
+ ret = ab8500_charger_detect_chargers(di);
+ if (ret < 0)
+ return;
+
+ if (!(ret & USB_PW_CONN)) {
+ di->vbus_detected = 0;
+ ab8500_charger_set_usb_connected(di, false);
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+ } else {
+ di->vbus_detected = 1;
+ ret = ab8500_charger_read_usb_type(di);
+ if (!ret) {
+ /* Update maximum input current */
+ ret = ab8500_charger_set_vbus_in_curr(di,
+ di->max_usb_in_curr);
+ if (ret)
+ return;
+
+ ab8500_charger_set_usb_connected(di, true);
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+ } else if (ret == -ENXIO) {
+ /* No valid charger type detected */
+ ab8500_charger_set_usb_connected(di, false);
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+ }
+ }
+}
+
+static void ab8500_charger_usb_state_changed_work(struct work_struct *work)
+{
+ int ret;
+ unsigned long flags;
+
+ struct ab8500_charger *di = container_of(work,
+ struct ab8500_charger, usb_state_changed_work);
+
+ if (!di->vbus_detected)
+ return;
+
+ spin_lock_irqsave(&di->usb_state.usb_lock, flags);
+ di->usb_state.usb_changed = false;
+ spin_unlock_irqrestore(&di->usb_state.usb_lock, flags);
+
+ /*
+ * wait for some time until you get updates from the usb stack
+ * and negotiations are completed
+ */
+ msleep(250);
+
+ if (di->usb_state.usb_changed)
+ return;
+
+ dev_dbg(di->dev, "%s USB state: 0x%02x mA: %d\n",
+ __func__, di->usb_state.state, di->usb_state.usb_current);
+
+ switch (di->usb_state.state) {
+ case AB8500_BM_USB_STATE_RESET_HS:
+ case AB8500_BM_USB_STATE_RESET_FS:
+ case AB8500_BM_USB_STATE_SUSPEND:
+ case AB8500_BM_USB_STATE_MAX:
+ ab8500_charger_set_usb_connected(di, false);
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+ break;
+
+ case AB8500_BM_USB_STATE_RESUME:
+ /*
+ * when suspend->resume there should be delay
+ * of 1sec for enabling charging
+ */
+ msleep(1000);
+ /* Intentional fall through */
+ case AB8500_BM_USB_STATE_CONFIGURED:
+ /*
+ * USB is configured, enable charging with the charging
+ * input current obtained from USB driver
+ */
+ if (!ab8500_charger_get_usb_cur(di)) {
+ /* Update maximum input current */
+ ret = ab8500_charger_set_vbus_in_curr(di,
+ di->max_usb_in_curr);
+ if (ret)
+ return;
+
+ ab8500_charger_set_usb_connected(di, true);
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+ }
+ break;
+
+ default:
+ break;
+ };
+}
+
+/**
+ * ab8500_charger_check_usbchargernotok_work() - check USB chg not ok status
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for checking the USB charger Not OK status
+ */
+static void ab8500_charger_check_usbchargernotok_work(struct work_struct *work)
+{
+ int ret;
+ u8 reg_value;
+ bool prev_status;
+
+ struct ab8500_charger *di = container_of(work,
+ struct ab8500_charger, check_usbchgnotok_work.work);
+
+ /* Check if the status bit for usbchargernotok is still active */
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG, ®_value);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return;
+ }
+ prev_status = di->flags.usbchargernotok;
+
+ if (reg_value & VBUS_CH_NOK) {
+ di->flags.usbchargernotok = true;
+ /* Check again in 1sec */
+ queue_delayed_work(di->charger_wq,
+ &di->check_usbchgnotok_work, HZ);
+ } else {
+ di->flags.usbchargernotok = false;
+ di->flags.vbus_collapse = false;
+ }
+
+ if (prev_status != di->flags.usbchargernotok)
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+}
+
+/**
+ * ab8500_charger_check_main_thermal_prot_work() - check main thermal status
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for checking the Main thermal prot status
+ */
+static void ab8500_charger_check_main_thermal_prot_work(
+ struct work_struct *work)
+{
+ int ret;
+ u8 reg_value;
+
+ struct ab8500_charger *di = container_of(work,
+ struct ab8500_charger, check_main_thermal_prot_work);
+
+ /* Check if the status bit for main_thermal_prot is still active */
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CH_STATUS2_REG, ®_value);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return;
+ }
+ if (reg_value & MAIN_CH_TH_PROT)
+ di->flags.main_thermal_prot = true;
+ else
+ di->flags.main_thermal_prot = false;
+
+ ab8500_power_supply_changed(di, &di->ac_chg.psy);
+}
+
+/**
+ * ab8500_charger_check_usb_thermal_prot_work() - check usb thermal status
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for checking the USB thermal prot status
+ */
+static void ab8500_charger_check_usb_thermal_prot_work(
+ struct work_struct *work)
+{
+ int ret;
+ u8 reg_value;
+
+ struct ab8500_charger *di = container_of(work,
+ struct ab8500_charger, check_usb_thermal_prot_work);
+
+ /* Check if the status bit for usb_thermal_prot is still active */
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG, ®_value);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return;
+ }
+ if (reg_value & USB_CH_TH_PROT)
+ di->flags.usb_thermal_prot = true;
+ else
+ di->flags.usb_thermal_prot = false;
+
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+}
+
+/**
+ * ab8500_charger_mainchunplugdet_handler() - main charger unplugged
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_mainchunplugdet_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev, "Main charger unplugged\n");
+ queue_work(di->charger_wq, &di->ac_work);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_mainchplugdet_handler() - main charger plugged
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_mainchplugdet_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev, "Main charger plugged\n");
+ queue_work(di->charger_wq, &di->ac_work);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_mainextchnotok_handler() - main charger not ok
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_mainextchnotok_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev, "Main charger not ok\n");
+ di->flags.mainextchnotok = true;
+ ab8500_power_supply_changed(di, &di->ac_chg.psy);
+
+ /* Schedule a new HW failure check */
+ queue_delayed_work(di->charger_wq, &di->check_hw_failure_work, 0);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_mainchthprotr_handler() - Die temp is above main charger
+ * thermal protection threshold
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_mainchthprotr_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev,
+ "Die temp above Main charger thermal protection threshold\n");
+ queue_work(di->charger_wq, &di->check_main_thermal_prot_work);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_mainchthprotf_handler() - Die temp is below main charger
+ * thermal protection threshold
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_mainchthprotf_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev,
+ "Die temp ok for Main charger thermal protection threshold\n");
+ queue_work(di->charger_wq, &di->check_main_thermal_prot_work);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_vbusdetf_handler() - VBUS falling detected
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_vbusdetf_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev, "VBUS falling detected\n");
+ queue_work(di->charger_wq, &di->detect_usb_type_work);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_vbusdetr_handler() - VBUS rising detected
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_vbusdetr_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ di->vbus_detected = true;
+ dev_dbg(di->dev, "VBUS rising detected\n");
+ queue_work(di->charger_wq, &di->detect_usb_type_work);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_usblinkstatus_handler() - USB link status has changed
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_usblinkstatus_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev, "USB link status changed\n");
+
+ queue_work(di->charger_wq, &di->usb_link_status_work);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_usbchthprotr_handler() - Die temp is above usb charger
+ * thermal protection threshold
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_usbchthprotr_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev,
+ "Die temp above USB charger thermal protection threshold\n");
+ queue_work(di->charger_wq, &di->check_usb_thermal_prot_work);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_usbchthprotf_handler() - Die temp is below usb charger
+ * thermal protection threshold
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_usbchthprotf_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev,
+ "Die temp ok for USB charger thermal protection threshold\n");
+ queue_work(di->charger_wq, &di->check_usb_thermal_prot_work);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_usbchargernotokr_handler() - USB charger not ok detected
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_usbchargernotokr_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev, "Not allowed USB charger detected\n");
+ queue_delayed_work(di->charger_wq, &di->check_usbchgnotok_work, 0);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_chwdexp_handler() - Charger watchdog expired
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_chwdexp_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev, "Charger watchdog expired\n");
+
+ /*
+ * The charger that was online when the watchdog expired
+ * needs to be restarted for charging to start again
+ */
+ if (di->ac.charger_online) {
+ di->ac.wd_expired = true;
+ ab8500_power_supply_changed(di, &di->ac_chg.psy);
+ }
+ if (di->usb.charger_online) {
+ di->usb.wd_expired = true;
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_vbusovv_handler() - VBUS overvoltage detected
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_charger structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_charger_vbusovv_handler(int irq, void *_di)
+{
+ struct ab8500_charger *di = _di;
+
+ dev_dbg(di->dev, "VBUS overvoltage detected\n");
+ di->flags.vbus_ovv = true;
+ ab8500_power_supply_changed(di, &di->usb_chg.psy);
+
+ /* Schedule a new HW failure check */
+ queue_delayed_work(di->charger_wq, &di->check_hw_failure_work, 0);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_charger_ac_get_property() - get the ac/mains properties
+ * @psy: pointer to the power_supply structure
+ * @psp: pointer to the power_supply_property structure
+ * @val: pointer to the power_supply_propval union
+ *
+ * This function gets called when an application tries to get the ac/mains
+ * properties by reading the sysfs files.
+ * AC/Mains properties are online, present and voltage.
+ * online: ac/mains charging is in progress or not
+ * present: presence of the ac/mains
+ * voltage: AC/Mains voltage
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8500_charger_ac_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct ab8500_charger *di;
+
+ di = to_ab8500_charger_ac_device_info(psy_to_ux500_charger(psy));
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_HEALTH:
+ if (di->flags.mainextchnotok)
+ val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ else if (di->ac.wd_expired || di->usb.wd_expired)
+ val->intval = POWER_SUPPLY_HEALTH_DEAD;
+ else if (di->flags.main_thermal_prot)
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = di->ac.charger_online;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = di->ac.charger_connected;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ di->ac.charger_voltage = ab8500_charger_get_ac_voltage(di);
+ val->intval = di->ac.charger_voltage * 1000;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ /*
+ * This property is used to indicate when CV mode is entered
+ * for the AC charger
+ */
+ di->ac.cv_active = ab8500_charger_ac_cv(di);
+ val->intval = di->ac.cv_active;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = ab8500_charger_get_ac_current(di) * 1000;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * ab8500_charger_usb_get_property() - get the usb properties
+ * @psy: pointer to the power_supply structure
+ * @psp: pointer to the power_supply_property structure
+ * @val: pointer to the power_supply_propval union
+ *
+ * This function gets called when an application tries to get the usb
+ * properties by reading the sysfs files.
+ * USB properties are online, present and voltage.
+ * online: usb charging is in progress or not
+ * present: presence of the usb
+ * voltage: vbus voltage
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8500_charger_usb_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct ab8500_charger *di;
+
+ di = to_ab8500_charger_usb_device_info(psy_to_ux500_charger(psy));
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_HEALTH:
+ if (di->flags.usbchargernotok)
+ val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ else if (di->ac.wd_expired || di->usb.wd_expired)
+ val->intval = POWER_SUPPLY_HEALTH_DEAD;
+ else if (di->flags.usb_thermal_prot)
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else if (di->flags.vbus_ovv)
+ val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = di->usb.charger_online;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = di->usb.charger_connected;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ di->usb.charger_voltage = ab8500_charger_get_vbus_voltage(di);
+ val->intval = di->usb.charger_voltage * 1000;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ /*
+ * This property is used to indicate when CV mode is entered
+ * for the USB charger
+ */
+ di->usb.cv_active = ab8500_charger_usb_cv(di);
+ val->intval = di->usb.cv_active;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = ab8500_charger_get_usb_current(di) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ /*
+ * This property is used to indicate when VBUS has collapsed
+ * due to too high output current from the USB charger
+ */
+ if (di->flags.vbus_collapse)
+ val->intval = 1;
+ else
+ val->intval = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * ab8500_charger_init_hw_registers() - Set up charger related registers
+ * @di: pointer to the ab8500_charger structure
+ *
+ * Set up charger OVV, watchdog and maximum voltage registers as well as
+ * charging of the backup battery
+ */
+static int ab8500_charger_init_hw_registers(struct ab8500_charger *di)
+{
+ int ret = 0;
+
+ /* Setup maximum charger current and voltage for ABB cut2.0 */
+ if (!is_ab8500_1p1_or_earlier(di->parent)) {
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER,
+ AB8500_CH_VOLT_LVL_MAX_REG, CH_VOL_LVL_4P6);
+ if (ret) {
+ dev_err(di->dev,
+ "failed to set CH_VOLT_LVL_MAX_REG\n");
+ goto out;
+ }
+
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER,
+ AB8500_CH_OPT_CRNTLVL_MAX_REG, CH_OP_CUR_LVL_1P6);
+ if (ret) {
+ dev_err(di->dev,
+ "failed to set CH_OPT_CRNTLVL_MAX_REG\n");
+ goto out;
+ }
+ }
+
+ /* VBUS OVV set to 6.3V and enable automatic current limitiation */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER,
+ AB8500_USBCH_CTRL2_REG,
+ VBUS_OVV_SELECT_6P3V | VBUS_AUTO_IN_CURR_LIM_ENA);
+ if (ret) {
+ dev_err(di->dev, "failed to set VBUS OVV\n");
+ goto out;
+ }
+
+ /* Enable main watchdog in OTP */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_OTP_EMUL, AB8500_OTP_CONF_15, OTP_ENABLE_WD);
+ if (ret) {
+ dev_err(di->dev, "failed to enable main WD in OTP\n");
+ goto out;
+ }
+
+ /* Enable main watchdog */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_SYS_CTRL2_BLOCK,
+ AB8500_MAIN_WDOG_CTRL_REG, MAIN_WDOG_ENA);
+ if (ret) {
+ dev_err(di->dev, "faile to enable main watchdog\n");
+ goto out;
+ }
+
+ /*
+ * Due to internal synchronisation, Enable and Kick watchdog bits
+ * cannot be enabled in a single write.
+ * A minimum delay of 2*32 kHz period (62.5µs) must be inserted
+ * between writing Enable then Kick bits.
+ */
+ udelay(63);
+
+ /* Kick main watchdog */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_SYS_CTRL2_BLOCK,
+ AB8500_MAIN_WDOG_CTRL_REG,
+ (MAIN_WDOG_ENA | MAIN_WDOG_KICK));
+ if (ret) {
+ dev_err(di->dev, "failed to kick main watchdog\n");
+ goto out;
+ }
+
+ /* Disable main watchdog */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_SYS_CTRL2_BLOCK,
+ AB8500_MAIN_WDOG_CTRL_REG, MAIN_WDOG_DIS);
+ if (ret) {
+ dev_err(di->dev, "failed to disable main watchdog\n");
+ goto out;
+ }
+
+ /* Set watchdog timeout */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_WD_TIMER_REG, WD_TIMER);
+ if (ret) {
+ dev_err(di->dev, "failed to set charger watchdog timeout\n");
+ goto out;
+ }
+
+ /* Backup battery voltage and current */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_RTC,
+ AB8500_RTC_BACKUP_CHG_REG,
+ di->bat->bkup_bat_v |
+ di->bat->bkup_bat_i);
+ if (ret) {
+ dev_err(di->dev, "failed to setup backup battery charging\n");
+ goto out;
+ }
+
+ /* Enable backup battery charging */
+ abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_RTC, AB8500_RTC_CTRL_REG,
+ RTC_BUP_CH_ENA, RTC_BUP_CH_ENA);
+ if (ret < 0)
+ dev_err(di->dev, "%s mask and set failed\n", __func__);
+
+out:
+ return ret;
+}
+
+/*
+ * ab8500 charger driver interrupts and their respective isr
+ */
+static struct ab8500_charger_interrupts ab8500_charger_irq[] = {
+ {"MAIN_CH_UNPLUG_DET", ab8500_charger_mainchunplugdet_handler},
+ {"MAIN_CHARGE_PLUG_DET", ab8500_charger_mainchplugdet_handler},
+ {"MAIN_EXT_CH_NOT_OK", ab8500_charger_mainextchnotok_handler},
+ {"MAIN_CH_TH_PROT_R", ab8500_charger_mainchthprotr_handler},
+ {"MAIN_CH_TH_PROT_F", ab8500_charger_mainchthprotf_handler},
+ {"VBUS_DET_F", ab8500_charger_vbusdetf_handler},
+ {"VBUS_DET_R", ab8500_charger_vbusdetr_handler},
+ {"USB_LINK_STATUS", ab8500_charger_usblinkstatus_handler},
+ {"USB_CH_TH_PROT_R", ab8500_charger_usbchthprotr_handler},
+ {"USB_CH_TH_PROT_F", ab8500_charger_usbchthprotf_handler},
+ {"USB_CHARGER_NOT_OKR", ab8500_charger_usbchargernotokr_handler},
+ {"VBUS_OVV", ab8500_charger_vbusovv_handler},
+ {"CH_WD_EXP", ab8500_charger_chwdexp_handler},
+};
+
+static int ab8500_charger_usb_notifier_call(struct notifier_block *nb,
+ unsigned long event, void *power)
+{
+ struct ab8500_charger *di =
+ container_of(nb, struct ab8500_charger, nb);
+ enum ab8500_usb_state bm_usb_state;
+ unsigned mA = *((unsigned *)power);
+
+ if (event != USB_EVENT_VBUS) {
+ dev_dbg(di->dev, "not a standard host, returning\n");
+ return NOTIFY_DONE;
+ }
+
+ /* TODO: State is fabricate here. See if charger really needs USB
+ * state or if mA is enough
+ */
+ if ((di->usb_state.usb_current == 2) && (mA > 2))
+ bm_usb_state = AB8500_BM_USB_STATE_RESUME;
+ else if (mA == 0)
+ bm_usb_state = AB8500_BM_USB_STATE_RESET_HS;
+ else if (mA == 2)
+ bm_usb_state = AB8500_BM_USB_STATE_SUSPEND;
+ else if (mA >= 8) /* 8, 100, 500 */
+ bm_usb_state = AB8500_BM_USB_STATE_CONFIGURED;
+ else /* Should never occur */
+ bm_usb_state = AB8500_BM_USB_STATE_RESET_FS;
+
+ dev_dbg(di->dev, "%s usb_state: 0x%02x mA: %d\n",
+ __func__, bm_usb_state, mA);
+
+ spin_lock(&di->usb_state.usb_lock);
+ di->usb_state.usb_changed = true;
+ spin_unlock(&di->usb_state.usb_lock);
+
+ di->usb_state.state = bm_usb_state;
+ di->usb_state.usb_current = mA;
+
+ queue_work(di->charger_wq, &di->usb_state_changed_work);
+
+ return NOTIFY_OK;
+}
+
+#if defined(CONFIG_PM)
+static int ab8500_charger_resume(struct platform_device *pdev)
+{
+ int ret;
+ struct ab8500_charger *di = platform_get_drvdata(pdev);
+
+ /*
+ * For ABB revision 1.0 and 1.1 there is a bug in the watchdog
+ * logic. That means we have to continously kick the charger
+ * watchdog even when no charger is connected. This is only
+ * valid once the AC charger has been enabled. This is
+ * a bug that is not handled by the algorithm and the
+ * watchdog have to be kicked by the charger driver
+ * when the AC charger is disabled
+ */
+ if (di->ac_conn && is_ab8500_1p1_or_earlier(di->parent)) {
+ ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CHARG_WD_CTRL, CHARG_WD_KICK);
+ if (ret)
+ dev_err(di->dev, "Failed to kick WD!\n");
+
+ /* If not already pending start a new timer */
+ if (!delayed_work_pending(
+ &di->kick_wd_work)) {
+ queue_delayed_work(di->charger_wq, &di->kick_wd_work,
+ round_jiffies(WD_KICK_INTERVAL));
+ }
+ }
+
+ /* If we still have a HW failure, schedule a new check */
+ if (di->flags.mainextchnotok || di->flags.vbus_ovv) {
+ queue_delayed_work(di->charger_wq,
+ &di->check_hw_failure_work, 0);
+ }
+
+ return 0;
+}
+
+static int ab8500_charger_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct ab8500_charger *di = platform_get_drvdata(pdev);
+
+ /* Cancel any pending HW failure check */
+ if (delayed_work_pending(&di->check_hw_failure_work))
+ cancel_delayed_work(&di->check_hw_failure_work);
+
+ return 0;
+}
+#else
+#define ab8500_charger_suspend NULL
+#define ab8500_charger_resume NULL
+#endif
+
+static int __devexit ab8500_charger_remove(struct platform_device *pdev)
+{
+ struct ab8500_charger *di = platform_get_drvdata(pdev);
+ int i, irq, ret;
+
+ /* Disable AC charging */
+ ab8500_charger_ac_en(&di->ac_chg, false, 0, 0);
+
+ /* Disable USB charging */
+ ab8500_charger_usb_en(&di->usb_chg, false, 0, 0);
+
+ /* Disable interrupts */
+ for (i = 0; i < ARRAY_SIZE(ab8500_charger_irq); i++) {
+ irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name);
+ free_irq(irq, di);
+ }
+
+ /* disable the regulator */
+ regulator_put(di->regu);
+
+ /* Backup battery voltage and current disable */
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_RTC, AB8500_RTC_CTRL_REG, RTC_BUP_CH_ENA, 0);
+ if (ret < 0)
+ dev_err(di->dev, "%s mask and set failed\n", __func__);
+
+ usb_unregister_notifier(di->usb_phy, &di->nb);
+ usb_put_transceiver(di->usb_phy);
+
+ /* Delete the work queue */
+ destroy_workqueue(di->charger_wq);
+
+ flush_scheduled_work();
+ power_supply_unregister(&di->usb_chg.psy);
+ power_supply_unregister(&di->ac_chg.psy);
+ platform_set_drvdata(pdev, NULL);
+ kfree(di);
+
+ return 0;
+}
+
+static int __devinit ab8500_charger_probe(struct platform_device *pdev)
+{
+ int irq, i, charger_status, ret = 0;
+ struct abx500_bm_plat_data *plat_data;
+
+ struct ab8500_charger *di =
+ kzalloc(sizeof(struct ab8500_charger), GFP_KERNEL);
+ if (!di)
+ return -ENOMEM;
+
+ /* get parent data */
+ di->dev = &pdev->dev;
+ di->parent = dev_get_drvdata(pdev->dev.parent);
+ di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+
+ /* initialize lock */
+ spin_lock_init(&di->usb_state.usb_lock);
+
+ /* get charger specific platform data */
+ plat_data = pdev->dev.platform_data;
+ di->pdata = plat_data->charger;
+
+ if (!di->pdata) {
+ dev_err(di->dev, "no charger platform data supplied\n");
+ ret = -EINVAL;
+ goto free_device_info;
+ }
+
+ /* get battery specific platform data */
+ di->bat = plat_data->battery;
+ if (!di->bat) {
+ dev_err(di->dev, "no battery platform data supplied\n");
+ ret = -EINVAL;
+ goto free_device_info;
+ }
+
+ di->autopower = false;
+
+ /* AC supply */
+ /* power_supply base class */
+ di->ac_chg.psy.name = "ab8500_ac";
+ di->ac_chg.psy.type = POWER_SUPPLY_TYPE_MAINS;
+ di->ac_chg.psy.properties = ab8500_charger_ac_props;
+ di->ac_chg.psy.num_properties = ARRAY_SIZE(ab8500_charger_ac_props);
+ di->ac_chg.psy.get_property = ab8500_charger_ac_get_property;
+ di->ac_chg.psy.supplied_to = di->pdata->supplied_to;
+ di->ac_chg.psy.num_supplicants = di->pdata->num_supplicants;
+ /* ux500_charger sub-class */
+ di->ac_chg.ops.enable = &ab8500_charger_ac_en;
+ di->ac_chg.ops.kick_wd = &ab8500_charger_watchdog_kick;
+ di->ac_chg.ops.update_curr = &ab8500_charger_update_charger_current;
+ di->ac_chg.max_out_volt = ab8500_charger_voltage_map[
+ ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
+ di->ac_chg.max_out_curr = ab8500_charger_current_map[
+ ARRAY_SIZE(ab8500_charger_current_map) - 1];
+
+ /* USB supply */
+ /* power_supply base class */
+ di->usb_chg.psy.name = "ab8500_usb";
+ di->usb_chg.psy.type = POWER_SUPPLY_TYPE_USB;
+ di->usb_chg.psy.properties = ab8500_charger_usb_props;
+ di->usb_chg.psy.num_properties = ARRAY_SIZE(ab8500_charger_usb_props);
+ di->usb_chg.psy.get_property = ab8500_charger_usb_get_property;
+ di->usb_chg.psy.supplied_to = di->pdata->supplied_to;
+ di->usb_chg.psy.num_supplicants = di->pdata->num_supplicants;
+ /* ux500_charger sub-class */
+ di->usb_chg.ops.enable = &ab8500_charger_usb_en;
+ di->usb_chg.ops.kick_wd = &ab8500_charger_watchdog_kick;
+ di->usb_chg.ops.update_curr = &ab8500_charger_update_charger_current;
+ di->usb_chg.max_out_volt = ab8500_charger_voltage_map[
+ ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
+ di->usb_chg.max_out_curr = ab8500_charger_current_map[
+ ARRAY_SIZE(ab8500_charger_current_map) - 1];
+
+
+ /* Create a work queue for the charger */
+ di->charger_wq =
+ create_singlethread_workqueue("ab8500_charger_wq");
+ if (di->charger_wq == NULL) {
+ dev_err(di->dev, "failed to create work queue\n");
+ goto free_device_info;
+ }
+
+ /* Init work for HW failure check */
+ INIT_DELAYED_WORK_DEFERRABLE(&di->check_hw_failure_work,
+ ab8500_charger_check_hw_failure_work);
+ INIT_DELAYED_WORK_DEFERRABLE(&di->check_usbchgnotok_work,
+ ab8500_charger_check_usbchargernotok_work);
+
+ /*
+ * For ABB revision 1.0 and 1.1 there is a bug in the watchdog
+ * logic. That means we have to continously kick the charger
+ * watchdog even when no charger is connected. This is only
+ * valid once the AC charger has been enabled. This is
+ * a bug that is not handled by the algorithm and the
+ * watchdog have to be kicked by the charger driver
+ * when the AC charger is disabled
+ */
+ INIT_DELAYED_WORK_DEFERRABLE(&di->kick_wd_work,
+ ab8500_charger_kick_watchdog_work);
+
+ INIT_DELAYED_WORK_DEFERRABLE(&di->check_vbat_work,
+ ab8500_charger_check_vbat_work);
+
+ /* Init work for charger detection */
+ INIT_WORK(&di->usb_link_status_work,
+ ab8500_charger_usb_link_status_work);
+ INIT_WORK(&di->ac_work, ab8500_charger_ac_work);
+ INIT_WORK(&di->detect_usb_type_work,
+ ab8500_charger_detect_usb_type_work);
+
+ INIT_WORK(&di->usb_state_changed_work,
+ ab8500_charger_usb_state_changed_work);
+
+ /* Init work for checking HW status */
+ INIT_WORK(&di->check_main_thermal_prot_work,
+ ab8500_charger_check_main_thermal_prot_work);
+ INIT_WORK(&di->check_usb_thermal_prot_work,
+ ab8500_charger_check_usb_thermal_prot_work);
+
+ /*
+ * VDD ADC supply needs to be enabled from this driver when there
+ * is a charger connected to avoid erroneous BTEMP_HIGH/LOW
+ * interrupts during charging
+ */
+ di->regu = regulator_get(di->dev, "vddadc");
+ if (IS_ERR(di->regu)) {
+ ret = PTR_ERR(di->regu);
+ dev_err(di->dev, "failed to get vddadc regulator\n");
+ goto free_charger_wq;
+ }
+
+
+ /* Initialize OVV, and other registers */
+ ret = ab8500_charger_init_hw_registers(di);
+ if (ret) {
+ dev_err(di->dev, "failed to initialize ABB registers\n");
+ goto free_regulator;
+ }
+
+ /* Register AC charger class */
+ ret = power_supply_register(di->dev, &di->ac_chg.psy);
+ if (ret) {
+ dev_err(di->dev, "failed to register AC charger\n");
+ goto free_regulator;
+ }
+
+ /* Register USB charger class */
+ ret = power_supply_register(di->dev, &di->usb_chg.psy);
+ if (ret) {
+ dev_err(di->dev, "failed to register USB charger\n");
+ goto free_ac;
+ }
+
+ di->usb_phy = usb_get_transceiver();
+ if (!di->usb_phy) {
+ dev_err(di->dev, "failed to get usb transceiver\n");
+ ret = -EINVAL;
+ goto free_usb;
+ }
+ di->nb.notifier_call = ab8500_charger_usb_notifier_call;
+ ret = usb_register_notifier(di->usb_phy, &di->nb);
+ if (ret) {
+ dev_err(di->dev, "failed to register usb notifier\n");
+ goto put_usb_phy;
+ }
+
+ /* Identify the connected charger types during startup */
+ charger_status = ab8500_charger_detect_chargers(di);
+ if (charger_status & AC_PW_CONN) {
+ di->ac.charger_connected = 1;
+ di->ac_conn = true;
+ ab8500_power_supply_changed(di, &di->ac_chg.psy);
+ sysfs_notify(&di->ac_chg.psy.dev->kobj, NULL, "present");
+ }
+
+ if (charger_status & USB_PW_CONN) {
+ dev_dbg(di->dev, "VBUS Detect during startup\n");
+ di->vbus_detected = true;
+ di->vbus_detected_start = true;
+ queue_work(di->charger_wq,
+ &di->detect_usb_type_work);
+ }
+
+ /* Register interrupts */
+ for (i = 0; i < ARRAY_SIZE(ab8500_charger_irq); i++) {
+ irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name);
+ ret = request_threaded_irq(irq, NULL, ab8500_charger_irq[i].isr,
+ IRQF_SHARED | IRQF_NO_SUSPEND,
+ ab8500_charger_irq[i].name, di);
+
+ if (ret != 0) {
+ dev_err(di->dev, "failed to request %s IRQ %d: %d\n"
+ , ab8500_charger_irq[i].name, irq, ret);
+ goto free_irq;
+ }
+ dev_dbg(di->dev, "Requested %s IRQ %d: %d\n",
+ ab8500_charger_irq[i].name, irq, ret);
+ }
+
+ platform_set_drvdata(pdev, di);
+
+ return ret;
+
+free_irq:
+ usb_unregister_notifier(di->usb_phy, &di->nb);
+
+ /* We also have to free all successfully registered irqs */
+ for (i = i - 1; i >= 0; i--) {
+ irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name);
+ free_irq(irq, di);
+ }
+put_usb_phy:
+ usb_put_transceiver(di->usb_phy);
+free_usb:
+ power_supply_unregister(&di->usb_chg.psy);
+free_ac:
+ power_supply_unregister(&di->ac_chg.psy);
+free_regulator:
+ regulator_put(di->regu);
+free_charger_wq:
+ destroy_workqueue(di->charger_wq);
+free_device_info:
+ kfree(di);
+
+ return ret;
+}
+
+static struct platform_driver ab8500_charger_driver = {
+ .probe = ab8500_charger_probe,
+ .remove = __devexit_p(ab8500_charger_remove),
+ .suspend = ab8500_charger_suspend,
+ .resume = ab8500_charger_resume,
+ .driver = {
+ .name = "ab8500-charger",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init ab8500_charger_init(void)
+{
+ return platform_driver_register(&ab8500_charger_driver);
+}
+
+static void __exit ab8500_charger_exit(void)
+{
+ platform_driver_unregister(&ab8500_charger_driver);
+}
+
+subsys_initcall_sync(ab8500_charger_init);
+module_exit(ab8500_charger_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Johan Palsson, Karl Komierowski, Arun R Murthy");
+MODULE_ALIAS("platform:ab8500-charger");
+MODULE_DESCRIPTION("AB8500 charger management driver");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/ab8500_fg.c b/ap/os/linux/linux-3.4.x/drivers/power/ab8500_fg.c
new file mode 100644
index 0000000..c22f2f0
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/ab8500_fg.c
@@ -0,0 +1,2637 @@
+/*
+ * Copyright (C) ST-Ericsson AB 2012
+ *
+ * Main and Back-up battery management driver.
+ *
+ * Note: Backup battery management is required in case of Li-Ion battery and not
+ * for capacitive battery. HREF boards have capacitive battery and hence backup
+ * battery management is not used and the supported code is available in this
+ * driver.
+ *
+ * License Terms: GNU General Public License v2
+ * Author:
+ * Johan Palsson <johan.palsson@stericsson.com>
+ * Karl Komierowski <karl.komierowski@stericsson.com>
+ * Arun R Murthy <arun.murthy@stericsson.com>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/kobject.h>
+#include <linux/mfd/abx500/ab8500.h>
+#include <linux/mfd/abx500.h>
+#include <linux/slab.h>
+#include <linux/mfd/abx500/ab8500-bm.h>
+#include <linux/delay.h>
+#include <linux/mfd/abx500/ab8500-gpadc.h>
+#include <linux/mfd/abx500.h>
+#include <linux/time.h>
+#include <linux/completion.h>
+
+#define MILLI_TO_MICRO 1000
+#define FG_LSB_IN_MA 1627
+#define QLSB_NANO_AMP_HOURS_X10 1129
+#define INS_CURR_TIMEOUT (3 * HZ)
+
+#define SEC_TO_SAMPLE(S) (S * 4)
+
+#define NBR_AVG_SAMPLES 20
+
+#define LOW_BAT_CHECK_INTERVAL (2 * HZ)
+
+#define VALID_CAPACITY_SEC (45 * 60) /* 45 minutes */
+#define BATT_OK_MIN 2360 /* mV */
+#define BATT_OK_INCREMENT 50 /* mV */
+#define BATT_OK_MAX_NR_INCREMENTS 0xE
+
+/* FG constants */
+#define BATT_OVV 0x01
+
+#define interpolate(x, x1, y1, x2, y2) \
+ ((y1) + ((((y2) - (y1)) * ((x) - (x1))) / ((x2) - (x1))));
+
+#define to_ab8500_fg_device_info(x) container_of((x), \
+ struct ab8500_fg, fg_psy);
+
+/**
+ * struct ab8500_fg_interrupts - ab8500 fg interupts
+ * @name: name of the interrupt
+ * @isr function pointer to the isr
+ */
+struct ab8500_fg_interrupts {
+ char *name;
+ irqreturn_t (*isr)(int irq, void *data);
+};
+
+enum ab8500_fg_discharge_state {
+ AB8500_FG_DISCHARGE_INIT,
+ AB8500_FG_DISCHARGE_INITMEASURING,
+ AB8500_FG_DISCHARGE_INIT_RECOVERY,
+ AB8500_FG_DISCHARGE_RECOVERY,
+ AB8500_FG_DISCHARGE_READOUT_INIT,
+ AB8500_FG_DISCHARGE_READOUT,
+ AB8500_FG_DISCHARGE_WAKEUP,
+};
+
+static char *discharge_state[] = {
+ "DISCHARGE_INIT",
+ "DISCHARGE_INITMEASURING",
+ "DISCHARGE_INIT_RECOVERY",
+ "DISCHARGE_RECOVERY",
+ "DISCHARGE_READOUT_INIT",
+ "DISCHARGE_READOUT",
+ "DISCHARGE_WAKEUP",
+};
+
+enum ab8500_fg_charge_state {
+ AB8500_FG_CHARGE_INIT,
+ AB8500_FG_CHARGE_READOUT,
+};
+
+static char *charge_state[] = {
+ "CHARGE_INIT",
+ "CHARGE_READOUT",
+};
+
+enum ab8500_fg_calibration_state {
+ AB8500_FG_CALIB_INIT,
+ AB8500_FG_CALIB_WAIT,
+ AB8500_FG_CALIB_END,
+};
+
+struct ab8500_fg_avg_cap {
+ int avg;
+ int samples[NBR_AVG_SAMPLES];
+ __kernel_time_t time_stamps[NBR_AVG_SAMPLES];
+ int pos;
+ int nbr_samples;
+ int sum;
+};
+
+struct ab8500_fg_battery_capacity {
+ int max_mah_design;
+ int max_mah;
+ int mah;
+ int permille;
+ int level;
+ int prev_mah;
+ int prev_percent;
+ int prev_level;
+ int user_mah;
+};
+
+struct ab8500_fg_flags {
+ bool fg_enabled;
+ bool conv_done;
+ bool charging;
+ bool fully_charged;
+ bool force_full;
+ bool low_bat_delay;
+ bool low_bat;
+ bool bat_ovv;
+ bool batt_unknown;
+ bool calibrate;
+ bool user_cap;
+ bool batt_id_received;
+};
+
+struct inst_curr_result_list {
+ struct list_head list;
+ int *result;
+};
+
+/**
+ * struct ab8500_fg - ab8500 FG device information
+ * @dev: Pointer to the structure device
+ * @node: a list of AB8500 FGs, hence prepared for reentrance
+ * @irq holds the CCEOC interrupt number
+ * @vbat: Battery voltage in mV
+ * @vbat_nom: Nominal battery voltage in mV
+ * @inst_curr: Instantenous battery current in mA
+ * @avg_curr: Average battery current in mA
+ * @bat_temp battery temperature
+ * @fg_samples: Number of samples used in the FG accumulation
+ * @accu_charge: Accumulated charge from the last conversion
+ * @recovery_cnt: Counter for recovery mode
+ * @high_curr_cnt: Counter for high current mode
+ * @init_cnt: Counter for init mode
+ * @recovery_needed: Indicate if recovery is needed
+ * @high_curr_mode: Indicate if we're in high current mode
+ * @init_capacity: Indicate if initial capacity measuring should be done
+ * @turn_off_fg: True if fg was off before current measurement
+ * @calib_state State during offset calibration
+ * @discharge_state: Current discharge state
+ * @charge_state: Current charge state
+ * @ab8500_fg_complete Completion struct used for the instant current reading
+ * @flags: Structure for information about events triggered
+ * @bat_cap: Structure for battery capacity specific parameters
+ * @avg_cap: Average capacity filter
+ * @parent: Pointer to the struct ab8500
+ * @gpadc: Pointer to the struct gpadc
+ * @pdata: Pointer to the abx500_fg platform data
+ * @bat: Pointer to the abx500_bm platform data
+ * @fg_psy: Structure that holds the FG specific battery properties
+ * @fg_wq: Work queue for running the FG algorithm
+ * @fg_periodic_work: Work to run the FG algorithm periodically
+ * @fg_low_bat_work: Work to check low bat condition
+ * @fg_reinit_work Work used to reset and reinitialise the FG algorithm
+ * @fg_work: Work to run the FG algorithm instantly
+ * @fg_acc_cur_work: Work to read the FG accumulator
+ * @fg_check_hw_failure_work: Work for checking HW state
+ * @cc_lock: Mutex for locking the CC
+ * @fg_kobject: Structure of type kobject
+ */
+struct ab8500_fg {
+ struct device *dev;
+ struct list_head node;
+ int irq;
+ int vbat;
+ int vbat_nom;
+ int inst_curr;
+ int avg_curr;
+ int bat_temp;
+ int fg_samples;
+ int accu_charge;
+ int recovery_cnt;
+ int high_curr_cnt;
+ int init_cnt;
+ bool recovery_needed;
+ bool high_curr_mode;
+ bool init_capacity;
+ bool turn_off_fg;
+ enum ab8500_fg_calibration_state calib_state;
+ enum ab8500_fg_discharge_state discharge_state;
+ enum ab8500_fg_charge_state charge_state;
+ struct completion ab8500_fg_complete;
+ struct ab8500_fg_flags flags;
+ struct ab8500_fg_battery_capacity bat_cap;
+ struct ab8500_fg_avg_cap avg_cap;
+ struct ab8500 *parent;
+ struct ab8500_gpadc *gpadc;
+ struct abx500_fg_platform_data *pdata;
+ struct abx500_bm_data *bat;
+ struct power_supply fg_psy;
+ struct workqueue_struct *fg_wq;
+ struct delayed_work fg_periodic_work;
+ struct delayed_work fg_low_bat_work;
+ struct delayed_work fg_reinit_work;
+ struct work_struct fg_work;
+ struct work_struct fg_acc_cur_work;
+ struct delayed_work fg_check_hw_failure_work;
+ struct mutex cc_lock;
+ struct kobject fg_kobject;
+};
+static LIST_HEAD(ab8500_fg_list);
+
+/**
+ * ab8500_fg_get() - returns a reference to the primary AB8500 fuel gauge
+ * (i.e. the first fuel gauge in the instance list)
+ */
+struct ab8500_fg *ab8500_fg_get(void)
+{
+ struct ab8500_fg *fg;
+
+ if (list_empty(&ab8500_fg_list))
+ return NULL;
+
+ fg = list_first_entry(&ab8500_fg_list, struct ab8500_fg, node);
+ return fg;
+}
+
+/* Main battery properties */
+static enum power_supply_property ab8500_fg_props[] = {
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
+ POWER_SUPPLY_PROP_ENERGY_FULL,
+ POWER_SUPPLY_PROP_ENERGY_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+};
+
+/*
+ * This array maps the raw hex value to lowbat voltage used by the AB8500
+ * Values taken from the UM0836
+ */
+static int ab8500_fg_lowbat_voltage_map[] = {
+ 2300 ,
+ 2325 ,
+ 2350 ,
+ 2375 ,
+ 2400 ,
+ 2425 ,
+ 2450 ,
+ 2475 ,
+ 2500 ,
+ 2525 ,
+ 2550 ,
+ 2575 ,
+ 2600 ,
+ 2625 ,
+ 2650 ,
+ 2675 ,
+ 2700 ,
+ 2725 ,
+ 2750 ,
+ 2775 ,
+ 2800 ,
+ 2825 ,
+ 2850 ,
+ 2875 ,
+ 2900 ,
+ 2925 ,
+ 2950 ,
+ 2975 ,
+ 3000 ,
+ 3025 ,
+ 3050 ,
+ 3075 ,
+ 3100 ,
+ 3125 ,
+ 3150 ,
+ 3175 ,
+ 3200 ,
+ 3225 ,
+ 3250 ,
+ 3275 ,
+ 3300 ,
+ 3325 ,
+ 3350 ,
+ 3375 ,
+ 3400 ,
+ 3425 ,
+ 3450 ,
+ 3475 ,
+ 3500 ,
+ 3525 ,
+ 3550 ,
+ 3575 ,
+ 3600 ,
+ 3625 ,
+ 3650 ,
+ 3675 ,
+ 3700 ,
+ 3725 ,
+ 3750 ,
+ 3775 ,
+ 3800 ,
+ 3825 ,
+ 3850 ,
+ 3850 ,
+};
+
+static u8 ab8500_volt_to_regval(int voltage)
+{
+ int i;
+
+ if (voltage < ab8500_fg_lowbat_voltage_map[0])
+ return 0;
+
+ for (i = 0; i < ARRAY_SIZE(ab8500_fg_lowbat_voltage_map); i++) {
+ if (voltage < ab8500_fg_lowbat_voltage_map[i])
+ return (u8) i - 1;
+ }
+
+ /* If not captured above, return index of last element */
+ return (u8) ARRAY_SIZE(ab8500_fg_lowbat_voltage_map) - 1;
+}
+
+/**
+ * ab8500_fg_is_low_curr() - Low or high current mode
+ * @di: pointer to the ab8500_fg structure
+ * @curr: the current to base or our decision on
+ *
+ * Low current mode if the current consumption is below a certain threshold
+ */
+static int ab8500_fg_is_low_curr(struct ab8500_fg *di, int curr)
+{
+ /*
+ * We want to know if we're in low current mode
+ */
+ if (curr > -di->bat->fg_params->high_curr_threshold)
+ return true;
+ else
+ return false;
+}
+
+/**
+ * ab8500_fg_add_cap_sample() - Add capacity to average filter
+ * @di: pointer to the ab8500_fg structure
+ * @sample: the capacity in mAh to add to the filter
+ *
+ * A capacity is added to the filter and a new mean capacity is calculated and
+ * returned
+ */
+static int ab8500_fg_add_cap_sample(struct ab8500_fg *di, int sample)
+{
+ struct timespec ts;
+ struct ab8500_fg_avg_cap *avg = &di->avg_cap;
+
+ getnstimeofday(&ts);
+
+ do {
+ avg->sum += sample - avg->samples[avg->pos];
+ avg->samples[avg->pos] = sample;
+ avg->time_stamps[avg->pos] = ts.tv_sec;
+ avg->pos++;
+
+ if (avg->pos == NBR_AVG_SAMPLES)
+ avg->pos = 0;
+
+ if (avg->nbr_samples < NBR_AVG_SAMPLES)
+ avg->nbr_samples++;
+
+ /*
+ * Check the time stamp for each sample. If too old,
+ * replace with latest sample
+ */
+ } while (ts.tv_sec - VALID_CAPACITY_SEC > avg->time_stamps[avg->pos]);
+
+ avg->avg = avg->sum / avg->nbr_samples;
+
+ return avg->avg;
+}
+
+/**
+ * ab8500_fg_clear_cap_samples() - Clear average filter
+ * @di: pointer to the ab8500_fg structure
+ *
+ * The capacity filter is is reset to zero.
+ */
+static void ab8500_fg_clear_cap_samples(struct ab8500_fg *di)
+{
+ int i;
+ struct ab8500_fg_avg_cap *avg = &di->avg_cap;
+
+ avg->pos = 0;
+ avg->nbr_samples = 0;
+ avg->sum = 0;
+ avg->avg = 0;
+
+ for (i = 0; i < NBR_AVG_SAMPLES; i++) {
+ avg->samples[i] = 0;
+ avg->time_stamps[i] = 0;
+ }
+}
+
+/**
+ * ab8500_fg_fill_cap_sample() - Fill average filter
+ * @di: pointer to the ab8500_fg structure
+ * @sample: the capacity in mAh to fill the filter with
+ *
+ * The capacity filter is filled with a capacity in mAh
+ */
+static void ab8500_fg_fill_cap_sample(struct ab8500_fg *di, int sample)
+{
+ int i;
+ struct timespec ts;
+ struct ab8500_fg_avg_cap *avg = &di->avg_cap;
+
+ getnstimeofday(&ts);
+
+ for (i = 0; i < NBR_AVG_SAMPLES; i++) {
+ avg->samples[i] = sample;
+ avg->time_stamps[i] = ts.tv_sec;
+ }
+
+ avg->pos = 0;
+ avg->nbr_samples = NBR_AVG_SAMPLES;
+ avg->sum = sample * NBR_AVG_SAMPLES;
+ avg->avg = sample;
+}
+
+/**
+ * ab8500_fg_coulomb_counter() - enable coulomb counter
+ * @di: pointer to the ab8500_fg structure
+ * @enable: enable/disable
+ *
+ * Enable/Disable coulomb counter.
+ * On failure returns negative value.
+ */
+static int ab8500_fg_coulomb_counter(struct ab8500_fg *di, bool enable)
+{
+ int ret = 0;
+ mutex_lock(&di->cc_lock);
+ if (enable) {
+ /* To be able to reprogram the number of samples, we have to
+ * first stop the CC and then enable it again */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+ AB8500_RTC_CC_CONF_REG, 0x00);
+ if (ret)
+ goto cc_err;
+
+ /* Program the samples */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_GAS_GAUGE, AB8500_GASG_CC_NCOV_ACCU,
+ di->fg_samples);
+ if (ret)
+ goto cc_err;
+
+ /* Start the CC */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+ AB8500_RTC_CC_CONF_REG,
+ (CC_DEEP_SLEEP_ENA | CC_PWR_UP_ENA));
+ if (ret)
+ goto cc_err;
+
+ di->flags.fg_enabled = true;
+ } else {
+ /* Clear any pending read requests */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_GAS_GAUGE, AB8500_GASG_CC_CTRL_REG, 0);
+ if (ret)
+ goto cc_err;
+
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_GAS_GAUGE, AB8500_GASG_CC_NCOV_ACCU_CTRL, 0);
+ if (ret)
+ goto cc_err;
+
+ /* Stop the CC */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+ AB8500_RTC_CC_CONF_REG, 0);
+ if (ret)
+ goto cc_err;
+
+ di->flags.fg_enabled = false;
+
+ }
+ dev_dbg(di->dev, " CC enabled: %d Samples: %d\n",
+ enable, di->fg_samples);
+
+ mutex_unlock(&di->cc_lock);
+
+ return ret;
+cc_err:
+ dev_err(di->dev, "%s Enabling coulomb counter failed\n", __func__);
+ mutex_unlock(&di->cc_lock);
+ return ret;
+}
+
+/**
+ * ab8500_fg_inst_curr_start() - start battery instantaneous current
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Returns 0 or error code
+ * Note: This is part "one" and has to be called before
+ * ab8500_fg_inst_curr_finalize()
+ */
+ int ab8500_fg_inst_curr_start(struct ab8500_fg *di)
+{
+ u8 reg_val;
+ int ret;
+
+ mutex_lock(&di->cc_lock);
+
+ ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+ AB8500_RTC_CC_CONF_REG, ®_val);
+ if (ret < 0)
+ goto fail;
+
+ if (!(reg_val & CC_PWR_UP_ENA)) {
+ dev_dbg(di->dev, "%s Enable FG\n", __func__);
+ di->turn_off_fg = true;
+
+ /* Program the samples */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_GAS_GAUGE, AB8500_GASG_CC_NCOV_ACCU,
+ SEC_TO_SAMPLE(10));
+ if (ret)
+ goto fail;
+
+ /* Start the CC */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+ AB8500_RTC_CC_CONF_REG,
+ (CC_DEEP_SLEEP_ENA | CC_PWR_UP_ENA));
+ if (ret)
+ goto fail;
+ } else {
+ di->turn_off_fg = false;
+ }
+
+ /* Return and WFI */
+ INIT_COMPLETION(di->ab8500_fg_complete);
+ enable_irq(di->irq);
+
+ /* Note: cc_lock is still locked */
+ return 0;
+fail:
+ mutex_unlock(&di->cc_lock);
+ return ret;
+}
+
+/**
+ * ab8500_fg_inst_curr_done() - check if fg conversion is done
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Returns 1 if conversion done, 0 if still waiting
+ */
+int ab8500_fg_inst_curr_done(struct ab8500_fg *di)
+{
+ return completion_done(&di->ab8500_fg_complete);
+}
+
+/**
+ * ab8500_fg_inst_curr_finalize() - battery instantaneous current
+ * @di: pointer to the ab8500_fg structure
+ * @res: battery instantenous current(on success)
+ *
+ * Returns 0 or an error code
+ * Note: This is part "two" and has to be called at earliest 250 ms
+ * after ab8500_fg_inst_curr_start()
+ */
+int ab8500_fg_inst_curr_finalize(struct ab8500_fg *di, int *res)
+{
+ u8 low, high;
+ int val;
+ int ret;
+ int timeout;
+
+ if (!completion_done(&di->ab8500_fg_complete)) {
+ timeout = wait_for_completion_timeout(&di->ab8500_fg_complete,
+ INS_CURR_TIMEOUT);
+ dev_dbg(di->dev, "Finalize time: %d ms\n",
+ ((INS_CURR_TIMEOUT - timeout) * 1000) / HZ);
+ if (!timeout) {
+ ret = -ETIME;
+ disable_irq(di->irq);
+ dev_err(di->dev, "completion timed out [%d]\n",
+ __LINE__);
+ goto fail;
+ }
+ }
+
+ disable_irq(di->irq);
+
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_GAS_GAUGE, AB8500_GASG_CC_CTRL_REG,
+ READ_REQ, READ_REQ);
+
+ /* 100uS between read request and read is needed */
+ usleep_range(100, 100);
+
+ /* Read CC Sample conversion value Low and high */
+ ret = abx500_get_register_interruptible(di->dev, AB8500_GAS_GAUGE,
+ AB8500_GASG_CC_SMPL_CNVL_REG, &low);
+ if (ret < 0)
+ goto fail;
+
+ ret = abx500_get_register_interruptible(di->dev, AB8500_GAS_GAUGE,
+ AB8500_GASG_CC_SMPL_CNVH_REG, &high);
+ if (ret < 0)
+ goto fail;
+
+ /*
+ * negative value for Discharging
+ * convert 2's compliment into decimal
+ */
+ if (high & 0x10)
+ val = (low | (high << 8) | 0xFFFFE000);
+ else
+ val = (low | (high << 8));
+
+ /*
+ * Convert to unit value in mA
+ * Full scale input voltage is
+ * 66.660mV => LSB = 66.660mV/(4096*res) = 1.627mA
+ * Given a 250ms conversion cycle time the LSB corresponds
+ * to 112.9 nAh. Convert to current by dividing by the conversion
+ * time in hours (250ms = 1 / (3600 * 4)h)
+ * 112.9nAh assumes 10mOhm, but fg_res is in 0.1mOhm
+ */
+ val = (val * QLSB_NANO_AMP_HOURS_X10 * 36 * 4) /
+ (1000 * di->bat->fg_res);
+
+ if (di->turn_off_fg) {
+ dev_dbg(di->dev, "%s Disable FG\n", __func__);
+
+ /* Clear any pending read requests */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_GAS_GAUGE, AB8500_GASG_CC_CTRL_REG, 0);
+ if (ret)
+ goto fail;
+
+ /* Stop the CC */
+ ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+ AB8500_RTC_CC_CONF_REG, 0);
+ if (ret)
+ goto fail;
+ }
+ mutex_unlock(&di->cc_lock);
+ (*res) = val;
+
+ return 0;
+fail:
+ mutex_unlock(&di->cc_lock);
+ return ret;
+}
+
+/**
+ * ab8500_fg_inst_curr_blocking() - battery instantaneous current
+ * @di: pointer to the ab8500_fg structure
+ * @res: battery instantenous current(on success)
+ *
+ * Returns 0 else error code
+ */
+int ab8500_fg_inst_curr_blocking(struct ab8500_fg *di)
+{
+ int ret;
+ int res = 0;
+
+ ret = ab8500_fg_inst_curr_start(di);
+ if (ret) {
+ dev_err(di->dev, "Failed to initialize fg_inst\n");
+ return 0;
+ }
+
+ ret = ab8500_fg_inst_curr_finalize(di, &res);
+ if (ret) {
+ dev_err(di->dev, "Failed to finalize fg_inst\n");
+ return 0;
+ }
+
+ return res;
+}
+
+/**
+ * ab8500_fg_acc_cur_work() - average battery current
+ * @work: pointer to the work_struct structure
+ *
+ * Updated the average battery current obtained from the
+ * coulomb counter.
+ */
+static void ab8500_fg_acc_cur_work(struct work_struct *work)
+{
+ int val;
+ int ret;
+ u8 low, med, high;
+
+ struct ab8500_fg *di = container_of(work,
+ struct ab8500_fg, fg_acc_cur_work);
+
+ mutex_lock(&di->cc_lock);
+ ret = abx500_set_register_interruptible(di->dev, AB8500_GAS_GAUGE,
+ AB8500_GASG_CC_NCOV_ACCU_CTRL, RD_NCONV_ACCU_REQ);
+ if (ret)
+ goto exit;
+
+ ret = abx500_get_register_interruptible(di->dev, AB8500_GAS_GAUGE,
+ AB8500_GASG_CC_NCOV_ACCU_LOW, &low);
+ if (ret < 0)
+ goto exit;
+
+ ret = abx500_get_register_interruptible(di->dev, AB8500_GAS_GAUGE,
+ AB8500_GASG_CC_NCOV_ACCU_MED, &med);
+ if (ret < 0)
+ goto exit;
+
+ ret = abx500_get_register_interruptible(di->dev, AB8500_GAS_GAUGE,
+ AB8500_GASG_CC_NCOV_ACCU_HIGH, &high);
+ if (ret < 0)
+ goto exit;
+
+ /* Check for sign bit in case of negative value, 2's compliment */
+ if (high & 0x10)
+ val = (low | (med << 8) | (high << 16) | 0xFFE00000);
+ else
+ val = (low | (med << 8) | (high << 16));
+
+ /*
+ * Convert to uAh
+ * Given a 250ms conversion cycle time the LSB corresponds
+ * to 112.9 nAh.
+ * 112.9nAh assumes 10mOhm, but fg_res is in 0.1mOhm
+ */
+ di->accu_charge = (val * QLSB_NANO_AMP_HOURS_X10) /
+ (100 * di->bat->fg_res);
+
+ /*
+ * Convert to unit value in mA
+ * Full scale input voltage is
+ * 66.660mV => LSB = 66.660mV/(4096*res) = 1.627mA
+ * Given a 250ms conversion cycle time the LSB corresponds
+ * to 112.9 nAh. Convert to current by dividing by the conversion
+ * time in hours (= samples / (3600 * 4)h)
+ * 112.9nAh assumes 10mOhm, but fg_res is in 0.1mOhm
+ */
+ di->avg_curr = (val * QLSB_NANO_AMP_HOURS_X10 * 36) /
+ (1000 * di->bat->fg_res * (di->fg_samples / 4));
+
+ di->flags.conv_done = true;
+
+ mutex_unlock(&di->cc_lock);
+
+ queue_work(di->fg_wq, &di->fg_work);
+
+ return;
+exit:
+ dev_err(di->dev,
+ "Failed to read or write gas gauge registers\n");
+ mutex_unlock(&di->cc_lock);
+ queue_work(di->fg_wq, &di->fg_work);
+}
+
+/**
+ * ab8500_fg_bat_voltage() - get battery voltage
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Returns battery voltage(on success) else error code
+ */
+static int ab8500_fg_bat_voltage(struct ab8500_fg *di)
+{
+ int vbat;
+ static int prev;
+
+ vbat = ab8500_gpadc_convert(di->gpadc, MAIN_BAT_V);
+ if (vbat < 0) {
+ dev_err(di->dev,
+ "%s gpadc conversion failed, using previous value\n",
+ __func__);
+ return prev;
+ }
+
+ prev = vbat;
+ return vbat;
+}
+
+/**
+ * ab8500_fg_volt_to_capacity() - Voltage based capacity
+ * @di: pointer to the ab8500_fg structure
+ * @voltage: The voltage to convert to a capacity
+ *
+ * Returns battery capacity in per mille based on voltage
+ */
+static int ab8500_fg_volt_to_capacity(struct ab8500_fg *di, int voltage)
+{
+ int i, tbl_size;
+ struct abx500_v_to_cap *tbl;
+ int cap = 0;
+
+ tbl = di->bat->bat_type[di->bat->batt_id].v_to_cap_tbl,
+ tbl_size = di->bat->bat_type[di->bat->batt_id].n_v_cap_tbl_elements;
+
+ for (i = 0; i < tbl_size; ++i) {
+ if (voltage > tbl[i].voltage)
+ break;
+ }
+
+ if ((i > 0) && (i < tbl_size)) {
+ cap = interpolate(voltage,
+ tbl[i].voltage,
+ tbl[i].capacity * 10,
+ tbl[i-1].voltage,
+ tbl[i-1].capacity * 10);
+ } else if (i == 0) {
+ cap = 1000;
+ } else {
+ cap = 0;
+ }
+
+ dev_dbg(di->dev, "%s Vbat: %d, Cap: %d per mille",
+ __func__, voltage, cap);
+
+ return cap;
+}
+
+/**
+ * ab8500_fg_uncomp_volt_to_capacity() - Uncompensated voltage based capacity
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Returns battery capacity based on battery voltage that is not compensated
+ * for the voltage drop due to the load
+ */
+static int ab8500_fg_uncomp_volt_to_capacity(struct ab8500_fg *di)
+{
+ di->vbat = ab8500_fg_bat_voltage(di);
+ return ab8500_fg_volt_to_capacity(di, di->vbat);
+}
+
+/**
+ * ab8500_fg_battery_resistance() - Returns the battery inner resistance
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Returns battery inner resistance added with the fuel gauge resistor value
+ * to get the total resistance in the whole link from gnd to bat+ node.
+ */
+static int ab8500_fg_battery_resistance(struct ab8500_fg *di)
+{
+ int i, tbl_size;
+ struct batres_vs_temp *tbl;
+ int resist = 0;
+
+ tbl = di->bat->bat_type[di->bat->batt_id].batres_tbl;
+ tbl_size = di->bat->bat_type[di->bat->batt_id].n_batres_tbl_elements;
+
+ for (i = 0; i < tbl_size; ++i) {
+ if (di->bat_temp / 10 > tbl[i].temp)
+ break;
+ }
+
+ if ((i > 0) && (i < tbl_size)) {
+ resist = interpolate(di->bat_temp / 10,
+ tbl[i].temp,
+ tbl[i].resist,
+ tbl[i-1].temp,
+ tbl[i-1].resist);
+ } else if (i == 0) {
+ resist = tbl[0].resist;
+ } else {
+ resist = tbl[tbl_size - 1].resist;
+ }
+
+ dev_dbg(di->dev, "%s Temp: %d battery internal resistance: %d"
+ " fg resistance %d, total: %d (mOhm)\n",
+ __func__, di->bat_temp, resist, di->bat->fg_res / 10,
+ (di->bat->fg_res / 10) + resist);
+
+ /* fg_res variable is in 0.1mOhm */
+ resist += di->bat->fg_res / 10;
+
+ return resist;
+}
+
+/**
+ * ab8500_fg_load_comp_volt_to_capacity() - Load compensated voltage based capacity
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Returns battery capacity based on battery voltage that is load compensated
+ * for the voltage drop
+ */
+static int ab8500_fg_load_comp_volt_to_capacity(struct ab8500_fg *di)
+{
+ int vbat_comp, res;
+ int i = 0;
+ int vbat = 0;
+
+ ab8500_fg_inst_curr_start(di);
+
+ do {
+ vbat += ab8500_fg_bat_voltage(di);
+ i++;
+ msleep(5);
+ } while (!ab8500_fg_inst_curr_done(di));
+
+ ab8500_fg_inst_curr_finalize(di, &di->inst_curr);
+
+ di->vbat = vbat / i;
+ res = ab8500_fg_battery_resistance(di);
+
+ /* Use Ohms law to get the load compensated voltage */
+ vbat_comp = di->vbat - (di->inst_curr * res) / 1000;
+
+ dev_dbg(di->dev, "%s Measured Vbat: %dmV,Compensated Vbat %dmV, "
+ "R: %dmOhm, Current: %dmA Vbat Samples: %d\n",
+ __func__, di->vbat, vbat_comp, res, di->inst_curr, i);
+
+ return ab8500_fg_volt_to_capacity(di, vbat_comp);
+}
+
+/**
+ * ab8500_fg_convert_mah_to_permille() - Capacity in mAh to permille
+ * @di: pointer to the ab8500_fg structure
+ * @cap_mah: capacity in mAh
+ *
+ * Converts capacity in mAh to capacity in permille
+ */
+static int ab8500_fg_convert_mah_to_permille(struct ab8500_fg *di, int cap_mah)
+{
+ return (cap_mah * 1000) / di->bat_cap.max_mah_design;
+}
+
+/**
+ * ab8500_fg_convert_permille_to_mah() - Capacity in permille to mAh
+ * @di: pointer to the ab8500_fg structure
+ * @cap_pm: capacity in permille
+ *
+ * Converts capacity in permille to capacity in mAh
+ */
+static int ab8500_fg_convert_permille_to_mah(struct ab8500_fg *di, int cap_pm)
+{
+ return cap_pm * di->bat_cap.max_mah_design / 1000;
+}
+
+/**
+ * ab8500_fg_convert_mah_to_uwh() - Capacity in mAh to uWh
+ * @di: pointer to the ab8500_fg structure
+ * @cap_mah: capacity in mAh
+ *
+ * Converts capacity in mAh to capacity in uWh
+ */
+static int ab8500_fg_convert_mah_to_uwh(struct ab8500_fg *di, int cap_mah)
+{
+ u64 div_res;
+ u32 div_rem;
+
+ div_res = ((u64) cap_mah) * ((u64) di->vbat_nom);
+ div_rem = do_div(div_res, 1000);
+
+ /* Make sure to round upwards if necessary */
+ if (div_rem >= 1000 / 2)
+ div_res++;
+
+ return (int) div_res;
+}
+
+/**
+ * ab8500_fg_calc_cap_charging() - Calculate remaining capacity while charging
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Return the capacity in mAh based on previous calculated capcity and the FG
+ * accumulator register value. The filter is filled with this capacity
+ */
+static int ab8500_fg_calc_cap_charging(struct ab8500_fg *di)
+{
+ dev_dbg(di->dev, "%s cap_mah %d accu_charge %d\n",
+ __func__,
+ di->bat_cap.mah,
+ di->accu_charge);
+
+ /* Capacity should not be less than 0 */
+ if (di->bat_cap.mah + di->accu_charge > 0)
+ di->bat_cap.mah += di->accu_charge;
+ else
+ di->bat_cap.mah = 0;
+ /*
+ * We force capacity to 100% once when the algorithm
+ * reports that it's full.
+ */
+ if (di->bat_cap.mah >= di->bat_cap.max_mah_design ||
+ di->flags.force_full) {
+ di->bat_cap.mah = di->bat_cap.max_mah_design;
+ }
+
+ ab8500_fg_fill_cap_sample(di, di->bat_cap.mah);
+ di->bat_cap.permille =
+ ab8500_fg_convert_mah_to_permille(di, di->bat_cap.mah);
+
+ /* We need to update battery voltage and inst current when charging */
+ di->vbat = ab8500_fg_bat_voltage(di);
+ di->inst_curr = ab8500_fg_inst_curr_blocking(di);
+
+ return di->bat_cap.mah;
+}
+
+/**
+ * ab8500_fg_calc_cap_discharge_voltage() - Capacity in discharge with voltage
+ * @di: pointer to the ab8500_fg structure
+ * @comp: if voltage should be load compensated before capacity calc
+ *
+ * Return the capacity in mAh based on the battery voltage. The voltage can
+ * either be load compensated or not. This value is added to the filter and a
+ * new mean value is calculated and returned.
+ */
+static int ab8500_fg_calc_cap_discharge_voltage(struct ab8500_fg *di, bool comp)
+{
+ int permille, mah;
+
+ if (comp)
+ permille = ab8500_fg_load_comp_volt_to_capacity(di);
+ else
+ permille = ab8500_fg_uncomp_volt_to_capacity(di);
+
+ mah = ab8500_fg_convert_permille_to_mah(di, permille);
+
+ di->bat_cap.mah = ab8500_fg_add_cap_sample(di, mah);
+ di->bat_cap.permille =
+ ab8500_fg_convert_mah_to_permille(di, di->bat_cap.mah);
+
+ return di->bat_cap.mah;
+}
+
+/**
+ * ab8500_fg_calc_cap_discharge_fg() - Capacity in discharge with FG
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Return the capacity in mAh based on previous calculated capcity and the FG
+ * accumulator register value. This value is added to the filter and a
+ * new mean value is calculated and returned.
+ */
+static int ab8500_fg_calc_cap_discharge_fg(struct ab8500_fg *di)
+{
+ int permille_volt, permille;
+
+ dev_dbg(di->dev, "%s cap_mah %d accu_charge %d\n",
+ __func__,
+ di->bat_cap.mah,
+ di->accu_charge);
+
+ /* Capacity should not be less than 0 */
+ if (di->bat_cap.mah + di->accu_charge > 0)
+ di->bat_cap.mah += di->accu_charge;
+ else
+ di->bat_cap.mah = 0;
+
+ if (di->bat_cap.mah >= di->bat_cap.max_mah_design)
+ di->bat_cap.mah = di->bat_cap.max_mah_design;
+
+ /*
+ * Check against voltage based capacity. It can not be lower
+ * than what the uncompensated voltage says
+ */
+ permille = ab8500_fg_convert_mah_to_permille(di, di->bat_cap.mah);
+ permille_volt = ab8500_fg_uncomp_volt_to_capacity(di);
+
+ if (permille < permille_volt) {
+ di->bat_cap.permille = permille_volt;
+ di->bat_cap.mah = ab8500_fg_convert_permille_to_mah(di,
+ di->bat_cap.permille);
+
+ dev_dbg(di->dev, "%s voltage based: perm %d perm_volt %d\n",
+ __func__,
+ permille,
+ permille_volt);
+
+ ab8500_fg_fill_cap_sample(di, di->bat_cap.mah);
+ } else {
+ ab8500_fg_fill_cap_sample(di, di->bat_cap.mah);
+ di->bat_cap.permille =
+ ab8500_fg_convert_mah_to_permille(di, di->bat_cap.mah);
+ }
+
+ return di->bat_cap.mah;
+}
+
+/**
+ * ab8500_fg_capacity_level() - Get the battery capacity level
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Get the battery capacity level based on the capacity in percent
+ */
+static int ab8500_fg_capacity_level(struct ab8500_fg *di)
+{
+ int ret, percent;
+
+ percent = di->bat_cap.permille / 10;
+
+ if (percent <= di->bat->cap_levels->critical ||
+ di->flags.low_bat)
+ ret = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
+ else if (percent <= di->bat->cap_levels->low)
+ ret = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+ else if (percent <= di->bat->cap_levels->normal)
+ ret = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ else if (percent <= di->bat->cap_levels->high)
+ ret = POWER_SUPPLY_CAPACITY_LEVEL_HIGH;
+ else
+ ret = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+
+ return ret;
+}
+
+/**
+ * ab8500_fg_check_capacity_limits() - Check if capacity has changed
+ * @di: pointer to the ab8500_fg structure
+ * @init: capacity is allowed to go up in init mode
+ *
+ * Check if capacity or capacity limit has changed and notify the system
+ * about it using the power_supply framework
+ */
+static void ab8500_fg_check_capacity_limits(struct ab8500_fg *di, bool init)
+{
+ bool changed = false;
+
+ di->bat_cap.level = ab8500_fg_capacity_level(di);
+
+ if (di->bat_cap.level != di->bat_cap.prev_level) {
+ /*
+ * We do not allow reported capacity level to go up
+ * unless we're charging or if we're in init
+ */
+ if (!(!di->flags.charging && di->bat_cap.level >
+ di->bat_cap.prev_level) || init) {
+ dev_dbg(di->dev, "level changed from %d to %d\n",
+ di->bat_cap.prev_level,
+ di->bat_cap.level);
+ di->bat_cap.prev_level = di->bat_cap.level;
+ changed = true;
+ } else {
+ dev_dbg(di->dev, "level not allowed to go up "
+ "since no charger is connected: %d to %d\n",
+ di->bat_cap.prev_level,
+ di->bat_cap.level);
+ }
+ }
+
+ /*
+ * If we have received the LOW_BAT IRQ, set capacity to 0 to initiate
+ * shutdown
+ */
+ if (di->flags.low_bat) {
+ dev_dbg(di->dev, "Battery low, set capacity to 0\n");
+ di->bat_cap.prev_percent = 0;
+ di->bat_cap.permille = 0;
+ di->bat_cap.prev_mah = 0;
+ di->bat_cap.mah = 0;
+ changed = true;
+ } else if (di->flags.fully_charged) {
+ /*
+ * We report 100% if algorithm reported fully charged
+ * unless capacity drops too much
+ */
+ if (di->flags.force_full) {
+ di->bat_cap.prev_percent = di->bat_cap.permille / 10;
+ di->bat_cap.prev_mah = di->bat_cap.mah;
+ } else if (!di->flags.force_full &&
+ di->bat_cap.prev_percent !=
+ (di->bat_cap.permille) / 10 &&
+ (di->bat_cap.permille / 10) <
+ di->bat->fg_params->maint_thres) {
+ dev_dbg(di->dev,
+ "battery reported full "
+ "but capacity dropping: %d\n",
+ di->bat_cap.permille / 10);
+ di->bat_cap.prev_percent = di->bat_cap.permille / 10;
+ di->bat_cap.prev_mah = di->bat_cap.mah;
+
+ changed = true;
+ }
+ } else if (di->bat_cap.prev_percent != di->bat_cap.permille / 10) {
+ if (di->bat_cap.permille / 10 == 0) {
+ /*
+ * We will not report 0% unless we've got
+ * the LOW_BAT IRQ, no matter what the FG
+ * algorithm says.
+ */
+ di->bat_cap.prev_percent = 1;
+ di->bat_cap.permille = 1;
+ di->bat_cap.prev_mah = 1;
+ di->bat_cap.mah = 1;
+
+ changed = true;
+ } else if (!(!di->flags.charging &&
+ (di->bat_cap.permille / 10) >
+ di->bat_cap.prev_percent) || init) {
+ /*
+ * We do not allow reported capacity to go up
+ * unless we're charging or if we're in init
+ */
+ dev_dbg(di->dev,
+ "capacity changed from %d to %d (%d)\n",
+ di->bat_cap.prev_percent,
+ di->bat_cap.permille / 10,
+ di->bat_cap.permille);
+ di->bat_cap.prev_percent = di->bat_cap.permille / 10;
+ di->bat_cap.prev_mah = di->bat_cap.mah;
+
+ changed = true;
+ } else {
+ dev_dbg(di->dev, "capacity not allowed to go up since "
+ "no charger is connected: %d to %d (%d)\n",
+ di->bat_cap.prev_percent,
+ di->bat_cap.permille / 10,
+ di->bat_cap.permille);
+ }
+ }
+
+ if (changed) {
+ power_supply_changed(&di->fg_psy);
+ if (di->flags.fully_charged && di->flags.force_full) {
+ dev_dbg(di->dev, "Battery full, notifying.\n");
+ di->flags.force_full = false;
+ sysfs_notify(&di->fg_kobject, NULL, "charge_full");
+ }
+ sysfs_notify(&di->fg_kobject, NULL, "charge_now");
+ }
+}
+
+static void ab8500_fg_charge_state_to(struct ab8500_fg *di,
+ enum ab8500_fg_charge_state new_state)
+{
+ dev_dbg(di->dev, "Charge state from %d [%s] to %d [%s]\n",
+ di->charge_state,
+ charge_state[di->charge_state],
+ new_state,
+ charge_state[new_state]);
+
+ di->charge_state = new_state;
+}
+
+static void ab8500_fg_discharge_state_to(struct ab8500_fg *di,
+ enum ab8500_fg_discharge_state new_state)
+{
+ dev_dbg(di->dev, "Disharge state from %d [%s] to %d [%s]\n",
+ di->discharge_state,
+ discharge_state[di->discharge_state],
+ new_state,
+ discharge_state[new_state]);
+
+ di->discharge_state = new_state;
+}
+
+/**
+ * ab8500_fg_algorithm_charging() - FG algorithm for when charging
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Battery capacity calculation state machine for when we're charging
+ */
+static void ab8500_fg_algorithm_charging(struct ab8500_fg *di)
+{
+ /*
+ * If we change to discharge mode
+ * we should start with recovery
+ */
+ if (di->discharge_state != AB8500_FG_DISCHARGE_INIT_RECOVERY)
+ ab8500_fg_discharge_state_to(di,
+ AB8500_FG_DISCHARGE_INIT_RECOVERY);
+
+ switch (di->charge_state) {
+ case AB8500_FG_CHARGE_INIT:
+ di->fg_samples = SEC_TO_SAMPLE(
+ di->bat->fg_params->accu_charging);
+
+ ab8500_fg_coulomb_counter(di, true);
+ ab8500_fg_charge_state_to(di, AB8500_FG_CHARGE_READOUT);
+
+ break;
+
+ case AB8500_FG_CHARGE_READOUT:
+ /*
+ * Read the FG and calculate the new capacity
+ */
+ mutex_lock(&di->cc_lock);
+ if (!di->flags.conv_done) {
+ /* Wasn't the CC IRQ that got us here */
+ mutex_unlock(&di->cc_lock);
+ dev_dbg(di->dev, "%s CC conv not done\n",
+ __func__);
+
+ break;
+ }
+ di->flags.conv_done = false;
+ mutex_unlock(&di->cc_lock);
+
+ ab8500_fg_calc_cap_charging(di);
+
+ break;
+
+ default:
+ break;
+ }
+
+ /* Check capacity limits */
+ ab8500_fg_check_capacity_limits(di, false);
+}
+
+static void force_capacity(struct ab8500_fg *di)
+{
+ int cap;
+
+ ab8500_fg_clear_cap_samples(di);
+ cap = di->bat_cap.user_mah;
+ if (cap > di->bat_cap.max_mah_design) {
+ dev_dbg(di->dev, "Remaining cap %d can't be bigger than total"
+ " %d\n", cap, di->bat_cap.max_mah_design);
+ cap = di->bat_cap.max_mah_design;
+ }
+ ab8500_fg_fill_cap_sample(di, di->bat_cap.user_mah);
+ di->bat_cap.permille = ab8500_fg_convert_mah_to_permille(di, cap);
+ di->bat_cap.mah = cap;
+ ab8500_fg_check_capacity_limits(di, true);
+}
+
+static bool check_sysfs_capacity(struct ab8500_fg *di)
+{
+ int cap, lower, upper;
+ int cap_permille;
+
+ cap = di->bat_cap.user_mah;
+
+ cap_permille = ab8500_fg_convert_mah_to_permille(di,
+ di->bat_cap.user_mah);
+
+ lower = di->bat_cap.permille - di->bat->fg_params->user_cap_limit * 10;
+ upper = di->bat_cap.permille + di->bat->fg_params->user_cap_limit * 10;
+
+ if (lower < 0)
+ lower = 0;
+ /* 1000 is permille, -> 100 percent */
+ if (upper > 1000)
+ upper = 1000;
+
+ dev_dbg(di->dev, "Capacity limits:"
+ " (Lower: %d User: %d Upper: %d) [user: %d, was: %d]\n",
+ lower, cap_permille, upper, cap, di->bat_cap.mah);
+
+ /* If within limits, use the saved capacity and exit estimation...*/
+ if (cap_permille > lower && cap_permille < upper) {
+ dev_dbg(di->dev, "OK! Using users cap %d uAh now\n", cap);
+ force_capacity(di);
+ return true;
+ }
+ dev_dbg(di->dev, "Capacity from user out of limits, ignoring");
+ return false;
+}
+
+/**
+ * ab8500_fg_algorithm_discharging() - FG algorithm for when discharging
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Battery capacity calculation state machine for when we're discharging
+ */
+static void ab8500_fg_algorithm_discharging(struct ab8500_fg *di)
+{
+ int sleep_time;
+
+ /* If we change to charge mode we should start with init */
+ if (di->charge_state != AB8500_FG_CHARGE_INIT)
+ ab8500_fg_charge_state_to(di, AB8500_FG_CHARGE_INIT);
+
+ switch (di->discharge_state) {
+ case AB8500_FG_DISCHARGE_INIT:
+ /* We use the FG IRQ to work on */
+ di->init_cnt = 0;
+ di->fg_samples = SEC_TO_SAMPLE(di->bat->fg_params->init_timer);
+ ab8500_fg_coulomb_counter(di, true);
+ ab8500_fg_discharge_state_to(di,
+ AB8500_FG_DISCHARGE_INITMEASURING);
+
+ /* Intentional fallthrough */
+ case AB8500_FG_DISCHARGE_INITMEASURING:
+ /*
+ * Discard a number of samples during startup.
+ * After that, use compensated voltage for a few
+ * samples to get an initial capacity.
+ * Then go to READOUT
+ */
+ sleep_time = di->bat->fg_params->init_timer;
+
+ /* Discard the first [x] seconds */
+ if (di->init_cnt >
+ di->bat->fg_params->init_discard_time) {
+ ab8500_fg_calc_cap_discharge_voltage(di, true);
+
+ ab8500_fg_check_capacity_limits(di, true);
+ }
+
+ di->init_cnt += sleep_time;
+ if (di->init_cnt > di->bat->fg_params->init_total_time)
+ ab8500_fg_discharge_state_to(di,
+ AB8500_FG_DISCHARGE_READOUT_INIT);
+
+ break;
+
+ case AB8500_FG_DISCHARGE_INIT_RECOVERY:
+ di->recovery_cnt = 0;
+ di->recovery_needed = true;
+ ab8500_fg_discharge_state_to(di,
+ AB8500_FG_DISCHARGE_RECOVERY);
+
+ /* Intentional fallthrough */
+
+ case AB8500_FG_DISCHARGE_RECOVERY:
+ sleep_time = di->bat->fg_params->recovery_sleep_timer;
+
+ /*
+ * We should check the power consumption
+ * If low, go to READOUT (after x min) or
+ * RECOVERY_SLEEP if time left.
+ * If high, go to READOUT
+ */
+ di->inst_curr = ab8500_fg_inst_curr_blocking(di);
+
+ if (ab8500_fg_is_low_curr(di, di->inst_curr)) {
+ if (di->recovery_cnt >
+ di->bat->fg_params->recovery_total_time) {
+ di->fg_samples = SEC_TO_SAMPLE(
+ di->bat->fg_params->accu_high_curr);
+ ab8500_fg_coulomb_counter(di, true);
+ ab8500_fg_discharge_state_to(di,
+ AB8500_FG_DISCHARGE_READOUT);
+ di->recovery_needed = false;
+ } else {
+ queue_delayed_work(di->fg_wq,
+ &di->fg_periodic_work,
+ sleep_time * HZ);
+ }
+ di->recovery_cnt += sleep_time;
+ } else {
+ di->fg_samples = SEC_TO_SAMPLE(
+ di->bat->fg_params->accu_high_curr);
+ ab8500_fg_coulomb_counter(di, true);
+ ab8500_fg_discharge_state_to(di,
+ AB8500_FG_DISCHARGE_READOUT);
+ }
+ break;
+
+ case AB8500_FG_DISCHARGE_READOUT_INIT:
+ di->fg_samples = SEC_TO_SAMPLE(
+ di->bat->fg_params->accu_high_curr);
+ ab8500_fg_coulomb_counter(di, true);
+ ab8500_fg_discharge_state_to(di,
+ AB8500_FG_DISCHARGE_READOUT);
+ break;
+
+ case AB8500_FG_DISCHARGE_READOUT:
+ di->inst_curr = ab8500_fg_inst_curr_blocking(di);
+
+ if (ab8500_fg_is_low_curr(di, di->inst_curr)) {
+ /* Detect mode change */
+ if (di->high_curr_mode) {
+ di->high_curr_mode = false;
+ di->high_curr_cnt = 0;
+ }
+
+ if (di->recovery_needed) {
+ ab8500_fg_discharge_state_to(di,
+ AB8500_FG_DISCHARGE_RECOVERY);
+
+ queue_delayed_work(di->fg_wq,
+ &di->fg_periodic_work, 0);
+
+ break;
+ }
+
+ ab8500_fg_calc_cap_discharge_voltage(di, true);
+ } else {
+ mutex_lock(&di->cc_lock);
+ if (!di->flags.conv_done) {
+ /* Wasn't the CC IRQ that got us here */
+ mutex_unlock(&di->cc_lock);
+ dev_dbg(di->dev, "%s CC conv not done\n",
+ __func__);
+
+ break;
+ }
+ di->flags.conv_done = false;
+ mutex_unlock(&di->cc_lock);
+
+ /* Detect mode change */
+ if (!di->high_curr_mode) {
+ di->high_curr_mode = true;
+ di->high_curr_cnt = 0;
+ }
+
+ di->high_curr_cnt +=
+ di->bat->fg_params->accu_high_curr;
+ if (di->high_curr_cnt >
+ di->bat->fg_params->high_curr_time)
+ di->recovery_needed = true;
+
+ ab8500_fg_calc_cap_discharge_fg(di);
+ }
+
+ ab8500_fg_check_capacity_limits(di, false);
+
+ break;
+
+ case AB8500_FG_DISCHARGE_WAKEUP:
+ ab8500_fg_coulomb_counter(di, true);
+ di->inst_curr = ab8500_fg_inst_curr_blocking(di);
+
+ ab8500_fg_calc_cap_discharge_voltage(di, true);
+
+ di->fg_samples = SEC_TO_SAMPLE(
+ di->bat->fg_params->accu_high_curr);
+ ab8500_fg_coulomb_counter(di, true);
+ ab8500_fg_discharge_state_to(di,
+ AB8500_FG_DISCHARGE_READOUT);
+
+ ab8500_fg_check_capacity_limits(di, false);
+
+ break;
+
+ default:
+ break;
+ }
+}
+
+/**
+ * ab8500_fg_algorithm_calibrate() - Internal columb counter offset calibration
+ * @di: pointer to the ab8500_fg structure
+ *
+ */
+static void ab8500_fg_algorithm_calibrate(struct ab8500_fg *di)
+{
+ int ret;
+
+ switch (di->calib_state) {
+ case AB8500_FG_CALIB_INIT:
+ dev_dbg(di->dev, "Calibration ongoing...\n");
+
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_GAS_GAUGE, AB8500_GASG_CC_CTRL_REG,
+ CC_INT_CAL_N_AVG_MASK, CC_INT_CAL_SAMPLES_8);
+ if (ret < 0)
+ goto err;
+
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_GAS_GAUGE, AB8500_GASG_CC_CTRL_REG,
+ CC_INTAVGOFFSET_ENA, CC_INTAVGOFFSET_ENA);
+ if (ret < 0)
+ goto err;
+ di->calib_state = AB8500_FG_CALIB_WAIT;
+ break;
+ case AB8500_FG_CALIB_END:
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_GAS_GAUGE, AB8500_GASG_CC_CTRL_REG,
+ CC_MUXOFFSET, CC_MUXOFFSET);
+ if (ret < 0)
+ goto err;
+ di->flags.calibrate = false;
+ dev_dbg(di->dev, "Calibration done...\n");
+ queue_delayed_work(di->fg_wq, &di->fg_periodic_work, 0);
+ break;
+ case AB8500_FG_CALIB_WAIT:
+ dev_dbg(di->dev, "Calibration WFI\n");
+ default:
+ break;
+ }
+ return;
+err:
+ /* Something went wrong, don't calibrate then */
+ dev_err(di->dev, "failed to calibrate the CC\n");
+ di->flags.calibrate = false;
+ di->calib_state = AB8500_FG_CALIB_INIT;
+ queue_delayed_work(di->fg_wq, &di->fg_periodic_work, 0);
+}
+
+/**
+ * ab8500_fg_algorithm() - Entry point for the FG algorithm
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Entry point for the battery capacity calculation state machine
+ */
+static void ab8500_fg_algorithm(struct ab8500_fg *di)
+{
+ if (di->flags.calibrate)
+ ab8500_fg_algorithm_calibrate(di);
+ else {
+ if (di->flags.charging)
+ ab8500_fg_algorithm_charging(di);
+ else
+ ab8500_fg_algorithm_discharging(di);
+ }
+
+ dev_dbg(di->dev, "[FG_DATA] %d %d %d %d %d %d %d %d %d "
+ "%d %d %d %d %d %d %d\n",
+ di->bat_cap.max_mah_design,
+ di->bat_cap.mah,
+ di->bat_cap.permille,
+ di->bat_cap.level,
+ di->bat_cap.prev_mah,
+ di->bat_cap.prev_percent,
+ di->bat_cap.prev_level,
+ di->vbat,
+ di->inst_curr,
+ di->avg_curr,
+ di->accu_charge,
+ di->flags.charging,
+ di->charge_state,
+ di->discharge_state,
+ di->high_curr_mode,
+ di->recovery_needed);
+}
+
+/**
+ * ab8500_fg_periodic_work() - Run the FG state machine periodically
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for periodic work
+ */
+static void ab8500_fg_periodic_work(struct work_struct *work)
+{
+ struct ab8500_fg *di = container_of(work, struct ab8500_fg,
+ fg_periodic_work.work);
+
+ if (di->init_capacity) {
+ /* A dummy read that will return 0 */
+ di->inst_curr = ab8500_fg_inst_curr_blocking(di);
+ /* Get an initial capacity calculation */
+ ab8500_fg_calc_cap_discharge_voltage(di, true);
+ ab8500_fg_check_capacity_limits(di, true);
+ di->init_capacity = false;
+
+ queue_delayed_work(di->fg_wq, &di->fg_periodic_work, 0);
+ } else if (di->flags.user_cap) {
+ if (check_sysfs_capacity(di)) {
+ ab8500_fg_check_capacity_limits(di, true);
+ if (di->flags.charging)
+ ab8500_fg_charge_state_to(di,
+ AB8500_FG_CHARGE_INIT);
+ else
+ ab8500_fg_discharge_state_to(di,
+ AB8500_FG_DISCHARGE_READOUT_INIT);
+ }
+ di->flags.user_cap = false;
+ queue_delayed_work(di->fg_wq, &di->fg_periodic_work, 0);
+ } else
+ ab8500_fg_algorithm(di);
+
+}
+
+/**
+ * ab8500_fg_check_hw_failure_work() - Check OVV_BAT condition
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for checking the OVV_BAT condition
+ */
+static void ab8500_fg_check_hw_failure_work(struct work_struct *work)
+{
+ int ret;
+ u8 reg_value;
+
+ struct ab8500_fg *di = container_of(work, struct ab8500_fg,
+ fg_check_hw_failure_work.work);
+
+ /*
+ * If we have had a battery over-voltage situation,
+ * check ovv-bit to see if it should be reset.
+ */
+ if (di->flags.bat_ovv) {
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CH_STAT_REG,
+ ®_value);
+ if (ret < 0) {
+ dev_err(di->dev, "%s ab8500 read failed\n", __func__);
+ return;
+ }
+ if ((reg_value & BATT_OVV) != BATT_OVV) {
+ dev_dbg(di->dev, "Battery recovered from OVV\n");
+ di->flags.bat_ovv = false;
+ power_supply_changed(&di->fg_psy);
+ return;
+ }
+
+ /* Not yet recovered from ovv, reschedule this test */
+ queue_delayed_work(di->fg_wq, &di->fg_check_hw_failure_work,
+ round_jiffies(HZ));
+ }
+}
+
+/**
+ * ab8500_fg_low_bat_work() - Check LOW_BAT condition
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for checking the LOW_BAT condition
+ */
+static void ab8500_fg_low_bat_work(struct work_struct *work)
+{
+ int vbat;
+
+ struct ab8500_fg *di = container_of(work, struct ab8500_fg,
+ fg_low_bat_work.work);
+
+ vbat = ab8500_fg_bat_voltage(di);
+
+ /* Check if LOW_BAT still fulfilled */
+ if (vbat < di->bat->fg_params->lowbat_threshold) {
+ di->flags.low_bat = true;
+ dev_warn(di->dev, "Battery voltage still LOW\n");
+
+ /*
+ * We need to re-schedule this check to be able to detect
+ * if the voltage increases again during charging
+ */
+ queue_delayed_work(di->fg_wq, &di->fg_low_bat_work,
+ round_jiffies(LOW_BAT_CHECK_INTERVAL));
+ } else {
+ di->flags.low_bat = false;
+ dev_warn(di->dev, "Battery voltage OK again\n");
+ }
+
+ /* This is needed to dispatch LOW_BAT */
+ ab8500_fg_check_capacity_limits(di, false);
+
+ /* Set this flag to check if LOW_BAT IRQ still occurs */
+ di->flags.low_bat_delay = false;
+}
+
+/**
+ * ab8500_fg_battok_calc - calculate the bit pattern corresponding
+ * to the target voltage.
+ * @di: pointer to the ab8500_fg structure
+ * @target target voltage
+ *
+ * Returns bit pattern closest to the target voltage
+ * valid return values are 0-14. (0-BATT_OK_MAX_NR_INCREMENTS)
+ */
+
+static int ab8500_fg_battok_calc(struct ab8500_fg *di, int target)
+{
+ if (target > BATT_OK_MIN +
+ (BATT_OK_INCREMENT * BATT_OK_MAX_NR_INCREMENTS))
+ return BATT_OK_MAX_NR_INCREMENTS;
+ if (target < BATT_OK_MIN)
+ return 0;
+ return (target - BATT_OK_MIN) / BATT_OK_INCREMENT;
+}
+
+/**
+ * ab8500_fg_battok_init_hw_register - init battok levels
+ * @di: pointer to the ab8500_fg structure
+ *
+ */
+
+static int ab8500_fg_battok_init_hw_register(struct ab8500_fg *di)
+{
+ int selected;
+ int sel0;
+ int sel1;
+ int cbp_sel0;
+ int cbp_sel1;
+ int ret;
+ int new_val;
+
+ sel0 = di->bat->fg_params->battok_falling_th_sel0;
+ sel1 = di->bat->fg_params->battok_raising_th_sel1;
+
+ cbp_sel0 = ab8500_fg_battok_calc(di, sel0);
+ cbp_sel1 = ab8500_fg_battok_calc(di, sel1);
+
+ selected = BATT_OK_MIN + cbp_sel0 * BATT_OK_INCREMENT;
+
+ if (selected != sel0)
+ dev_warn(di->dev, "Invalid voltage step:%d, using %d %d\n",
+ sel0, selected, cbp_sel0);
+
+ selected = BATT_OK_MIN + cbp_sel1 * BATT_OK_INCREMENT;
+
+ if (selected != sel1)
+ dev_warn(di->dev, "Invalid voltage step:%d, using %d %d\n",
+ sel1, selected, cbp_sel1);
+
+ new_val = cbp_sel0 | (cbp_sel1 << 4);
+
+ dev_dbg(di->dev, "using: %x %d %d\n", new_val, cbp_sel0, cbp_sel1);
+ ret = abx500_set_register_interruptible(di->dev, AB8500_SYS_CTRL2_BLOCK,
+ AB8500_BATT_OK_REG, new_val);
+ return ret;
+}
+
+/**
+ * ab8500_fg_instant_work() - Run the FG state machine instantly
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for instant work
+ */
+static void ab8500_fg_instant_work(struct work_struct *work)
+{
+ struct ab8500_fg *di = container_of(work, struct ab8500_fg, fg_work);
+
+ ab8500_fg_algorithm(di);
+}
+
+/**
+ * ab8500_fg_cc_data_end_handler() - isr to get battery avg current.
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_fg structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_fg_cc_data_end_handler(int irq, void *_di)
+{
+ struct ab8500_fg *di = _di;
+ complete(&di->ab8500_fg_complete);
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_fg_cc_convend_handler() - isr to get battery avg current.
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_fg structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_fg_cc_int_calib_handler(int irq, void *_di)
+{
+ struct ab8500_fg *di = _di;
+ di->calib_state = AB8500_FG_CALIB_END;
+ queue_delayed_work(di->fg_wq, &di->fg_periodic_work, 0);
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_fg_cc_convend_handler() - isr to get battery avg current.
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_fg structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_fg_cc_convend_handler(int irq, void *_di)
+{
+ struct ab8500_fg *di = _di;
+
+ queue_work(di->fg_wq, &di->fg_acc_cur_work);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_fg_batt_ovv_handler() - Battery OVV occured
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_fg structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_fg_batt_ovv_handler(int irq, void *_di)
+{
+ struct ab8500_fg *di = _di;
+
+ dev_dbg(di->dev, "Battery OVV\n");
+ di->flags.bat_ovv = true;
+ power_supply_changed(&di->fg_psy);
+
+ /* Schedule a new HW failure check */
+ queue_delayed_work(di->fg_wq, &di->fg_check_hw_failure_work, 0);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_fg_lowbatf_handler() - Battery voltage is below LOW threshold
+ * @irq: interrupt number
+ * @_di: pointer to the ab8500_fg structure
+ *
+ * Returns IRQ status(IRQ_HANDLED)
+ */
+static irqreturn_t ab8500_fg_lowbatf_handler(int irq, void *_di)
+{
+ struct ab8500_fg *di = _di;
+
+ if (!di->flags.low_bat_delay) {
+ dev_warn(di->dev, "Battery voltage is below LOW threshold\n");
+ di->flags.low_bat_delay = true;
+ /*
+ * Start a timer to check LOW_BAT again after some time
+ * This is done to avoid shutdown on single voltage dips
+ */
+ queue_delayed_work(di->fg_wq, &di->fg_low_bat_work,
+ round_jiffies(LOW_BAT_CHECK_INTERVAL));
+ }
+ return IRQ_HANDLED;
+}
+
+/**
+ * ab8500_fg_get_property() - get the fg properties
+ * @psy: pointer to the power_supply structure
+ * @psp: pointer to the power_supply_property structure
+ * @val: pointer to the power_supply_propval union
+ *
+ * This function gets called when an application tries to get the
+ * fg properties by reading the sysfs files.
+ * voltage_now: battery voltage
+ * current_now: battery instant current
+ * current_avg: battery average current
+ * charge_full_design: capacity where battery is considered full
+ * charge_now: battery capacity in nAh
+ * capacity: capacity in percent
+ * capacity_level: capacity level
+ *
+ * Returns error code in case of failure else 0 on success
+ */
+static int ab8500_fg_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct ab8500_fg *di;
+
+ di = to_ab8500_fg_device_info(psy);
+
+ /*
+ * If battery is identified as unknown and charging of unknown
+ * batteries is disabled, we always report 100% capacity and
+ * capacity level UNKNOWN, since we can't calculate
+ * remaining capacity
+ */
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ if (di->flags.bat_ovv)
+ val->intval = BATT_OVV_VALUE * 1000;
+ else
+ val->intval = di->vbat * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = di->inst_curr * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ val->intval = di->avg_curr * 1000;
+ break;
+ case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
+ val->intval = ab8500_fg_convert_mah_to_uwh(di,
+ di->bat_cap.max_mah_design);
+ break;
+ case POWER_SUPPLY_PROP_ENERGY_FULL:
+ val->intval = ab8500_fg_convert_mah_to_uwh(di,
+ di->bat_cap.max_mah);
+ break;
+ case POWER_SUPPLY_PROP_ENERGY_NOW:
+ if (di->flags.batt_unknown && !di->bat->chg_unknown_bat &&
+ di->flags.batt_id_received)
+ val->intval = ab8500_fg_convert_mah_to_uwh(di,
+ di->bat_cap.max_mah);
+ else
+ val->intval = ab8500_fg_convert_mah_to_uwh(di,
+ di->bat_cap.prev_mah);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ val->intval = di->bat_cap.max_mah_design;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ val->intval = di->bat_cap.max_mah;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ if (di->flags.batt_unknown && !di->bat->chg_unknown_bat &&
+ di->flags.batt_id_received)
+ val->intval = di->bat_cap.max_mah;
+ else
+ val->intval = di->bat_cap.prev_mah;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ if (di->flags.batt_unknown && !di->bat->chg_unknown_bat &&
+ di->flags.batt_id_received)
+ val->intval = 100;
+ else
+ val->intval = di->bat_cap.prev_percent;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+ if (di->flags.batt_unknown && !di->bat->chg_unknown_bat &&
+ di->flags.batt_id_received)
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN;
+ else
+ val->intval = di->bat_cap.prev_level;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int ab8500_fg_get_ext_psy_data(struct device *dev, void *data)
+{
+ struct power_supply *psy;
+ struct power_supply *ext;
+ struct ab8500_fg *di;
+ union power_supply_propval ret;
+ int i, j;
+ bool psy_found = false;
+
+ psy = (struct power_supply *)data;
+ ext = dev_get_drvdata(dev);
+ di = to_ab8500_fg_device_info(psy);
+
+ /*
+ * For all psy where the name of your driver
+ * appears in any supplied_to
+ */
+ for (i = 0; i < ext->num_supplicants; i++) {
+ if (!strcmp(ext->supplied_to[i], psy->name))
+ psy_found = true;
+ }
+
+ if (!psy_found)
+ return 0;
+
+ /* Go through all properties for the psy */
+ for (j = 0; j < ext->num_properties; j++) {
+ enum power_supply_property prop;
+ prop = ext->properties[j];
+
+ if (ext->get_property(ext, prop, &ret))
+ continue;
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_STATUS:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_BATTERY:
+ switch (ret.intval) {
+ case POWER_SUPPLY_STATUS_UNKNOWN:
+ case POWER_SUPPLY_STATUS_DISCHARGING:
+ case POWER_SUPPLY_STATUS_NOT_CHARGING:
+ if (!di->flags.charging)
+ break;
+ di->flags.charging = false;
+ di->flags.fully_charged = false;
+ queue_work(di->fg_wq, &di->fg_work);
+ break;
+ case POWER_SUPPLY_STATUS_FULL:
+ if (di->flags.fully_charged)
+ break;
+ di->flags.fully_charged = true;
+ di->flags.force_full = true;
+ /* Save current capacity as maximum */
+ di->bat_cap.max_mah = di->bat_cap.mah;
+ queue_work(di->fg_wq, &di->fg_work);
+ break;
+ case POWER_SUPPLY_STATUS_CHARGING:
+ if (di->flags.charging)
+ break;
+ di->flags.charging = true;
+ di->flags.fully_charged = false;
+ queue_work(di->fg_wq, &di->fg_work);
+ break;
+ };
+ default:
+ break;
+ };
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_BATTERY:
+ if (!di->flags.batt_id_received) {
+ const struct abx500_battery_type *b;
+
+ b = &(di->bat->bat_type[di->bat->batt_id]);
+
+ di->flags.batt_id_received = true;
+
+ di->bat_cap.max_mah_design =
+ MILLI_TO_MICRO *
+ b->charge_full_design;
+
+ di->bat_cap.max_mah =
+ di->bat_cap.max_mah_design;
+
+ di->vbat_nom = b->nominal_voltage;
+ }
+
+ if (ret.intval)
+ di->flags.batt_unknown = false;
+ else
+ di->flags.batt_unknown = true;
+ break;
+ default:
+ break;
+ }
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_BATTERY:
+ if (di->flags.batt_id_received)
+ di->bat_temp = ret.intval;
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ return 0;
+}
+
+/**
+ * ab8500_fg_init_hw_registers() - Set up FG related registers
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Set up battery OVV, low battery voltage registers
+ */
+static int ab8500_fg_init_hw_registers(struct ab8500_fg *di)
+{
+ int ret;
+
+ /* Set VBAT OVV threshold */
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER,
+ AB8500_BATT_OVV,
+ BATT_OVV_TH_4P75,
+ BATT_OVV_TH_4P75);
+ if (ret) {
+ dev_err(di->dev, "failed to set BATT_OVV\n");
+ goto out;
+ }
+
+ /* Enable VBAT OVV detection */
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER,
+ AB8500_BATT_OVV,
+ BATT_OVV_ENA,
+ BATT_OVV_ENA);
+ if (ret) {
+ dev_err(di->dev, "failed to enable BATT_OVV\n");
+ goto out;
+ }
+
+ /* Low Battery Voltage */
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_SYS_CTRL2_BLOCK,
+ AB8500_LOW_BAT_REG,
+ ab8500_volt_to_regval(
+ di->bat->fg_params->lowbat_threshold) << 1 |
+ LOW_BAT_ENABLE);
+ if (ret) {
+ dev_err(di->dev, "%s write failed\n", __func__);
+ goto out;
+ }
+
+ /* Battery OK threshold */
+ ret = ab8500_fg_battok_init_hw_register(di);
+ if (ret) {
+ dev_err(di->dev, "BattOk init write failed.\n");
+ goto out;
+ }
+out:
+ return ret;
+}
+
+/**
+ * ab8500_fg_external_power_changed() - callback for power supply changes
+ * @psy: pointer to the structure power_supply
+ *
+ * This function is the entry point of the pointer external_power_changed
+ * of the structure power_supply.
+ * This function gets executed when there is a change in any external power
+ * supply that this driver needs to be notified of.
+ */
+static void ab8500_fg_external_power_changed(struct power_supply *psy)
+{
+ struct ab8500_fg *di = to_ab8500_fg_device_info(psy);
+
+ class_for_each_device(power_supply_class, NULL,
+ &di->fg_psy, ab8500_fg_get_ext_psy_data);
+}
+
+/**
+ * abab8500_fg_reinit_work() - work to reset the FG algorithm
+ * @work: pointer to the work_struct structure
+ *
+ * Used to reset the current battery capacity to be able to
+ * retrigger a new voltage base capacity calculation. For
+ * test and verification purpose.
+ */
+static void ab8500_fg_reinit_work(struct work_struct *work)
+{
+ struct ab8500_fg *di = container_of(work, struct ab8500_fg,
+ fg_reinit_work.work);
+
+ if (di->flags.calibrate == false) {
+ dev_dbg(di->dev, "Resetting FG state machine to init.\n");
+ ab8500_fg_clear_cap_samples(di);
+ ab8500_fg_calc_cap_discharge_voltage(di, true);
+ ab8500_fg_charge_state_to(di, AB8500_FG_CHARGE_INIT);
+ ab8500_fg_discharge_state_to(di, AB8500_FG_DISCHARGE_INIT);
+ queue_delayed_work(di->fg_wq, &di->fg_periodic_work, 0);
+
+ } else {
+ dev_err(di->dev, "Residual offset calibration ongoing "
+ "retrying..\n");
+ /* Wait one second until next try*/
+ queue_delayed_work(di->fg_wq, &di->fg_reinit_work,
+ round_jiffies(1));
+ }
+}
+
+/**
+ * ab8500_fg_reinit() - forces FG algorithm to reinitialize with current values
+ *
+ * This function can be used to force the FG algorithm to recalculate a new
+ * voltage based battery capacity.
+ */
+void ab8500_fg_reinit(void)
+{
+ struct ab8500_fg *di = ab8500_fg_get();
+ /* User won't be notified if a null pointer returned. */
+ if (di != NULL)
+ queue_delayed_work(di->fg_wq, &di->fg_reinit_work, 0);
+}
+
+/* Exposure to the sysfs interface */
+
+struct ab8500_fg_sysfs_entry {
+ struct attribute attr;
+ ssize_t (*show)(struct ab8500_fg *, char *);
+ ssize_t (*store)(struct ab8500_fg *, const char *, size_t);
+};
+
+static ssize_t charge_full_show(struct ab8500_fg *di, char *buf)
+{
+ return sprintf(buf, "%d\n", di->bat_cap.max_mah);
+}
+
+static ssize_t charge_full_store(struct ab8500_fg *di, const char *buf,
+ size_t count)
+{
+ unsigned long charge_full;
+ ssize_t ret = -EINVAL;
+
+ ret = strict_strtoul(buf, 10, &charge_full);
+
+ dev_dbg(di->dev, "Ret %zd charge_full %lu", ret, charge_full);
+
+ if (!ret) {
+ di->bat_cap.max_mah = (int) charge_full;
+ ret = count;
+ }
+ return ret;
+}
+
+static ssize_t charge_now_show(struct ab8500_fg *di, char *buf)
+{
+ return sprintf(buf, "%d\n", di->bat_cap.prev_mah);
+}
+
+static ssize_t charge_now_store(struct ab8500_fg *di, const char *buf,
+ size_t count)
+{
+ unsigned long charge_now;
+ ssize_t ret;
+
+ ret = strict_strtoul(buf, 10, &charge_now);
+
+ dev_dbg(di->dev, "Ret %zd charge_now %lu was %d",
+ ret, charge_now, di->bat_cap.prev_mah);
+
+ if (!ret) {
+ di->bat_cap.user_mah = (int) charge_now;
+ di->flags.user_cap = true;
+ ret = count;
+ queue_delayed_work(di->fg_wq, &di->fg_periodic_work, 0);
+ }
+ return ret;
+}
+
+static struct ab8500_fg_sysfs_entry charge_full_attr =
+ __ATTR(charge_full, 0644, charge_full_show, charge_full_store);
+
+static struct ab8500_fg_sysfs_entry charge_now_attr =
+ __ATTR(charge_now, 0644, charge_now_show, charge_now_store);
+
+static ssize_t
+ab8500_fg_show(struct kobject *kobj, struct attribute *attr, char *buf)
+{
+ struct ab8500_fg_sysfs_entry *entry;
+ struct ab8500_fg *di;
+
+ entry = container_of(attr, struct ab8500_fg_sysfs_entry, attr);
+ di = container_of(kobj, struct ab8500_fg, fg_kobject);
+
+ if (!entry->show)
+ return -EIO;
+
+ return entry->show(di, buf);
+}
+static ssize_t
+ab8500_fg_store(struct kobject *kobj, struct attribute *attr, const char *buf,
+ size_t count)
+{
+ struct ab8500_fg_sysfs_entry *entry;
+ struct ab8500_fg *di;
+
+ entry = container_of(attr, struct ab8500_fg_sysfs_entry, attr);
+ di = container_of(kobj, struct ab8500_fg, fg_kobject);
+
+ if (!entry->store)
+ return -EIO;
+
+ return entry->store(di, buf, count);
+}
+
+static const struct sysfs_ops ab8500_fg_sysfs_ops = {
+ .show = ab8500_fg_show,
+ .store = ab8500_fg_store,
+};
+
+static struct attribute *ab8500_fg_attrs[] = {
+ &charge_full_attr.attr,
+ &charge_now_attr.attr,
+ NULL,
+};
+
+static struct kobj_type ab8500_fg_ktype = {
+ .sysfs_ops = &ab8500_fg_sysfs_ops,
+ .default_attrs = ab8500_fg_attrs,
+};
+
+/**
+ * ab8500_chargalg_sysfs_exit() - de-init of sysfs entry
+ * @di: pointer to the struct ab8500_chargalg
+ *
+ * This function removes the entry in sysfs.
+ */
+static void ab8500_fg_sysfs_exit(struct ab8500_fg *di)
+{
+ kobject_del(&di->fg_kobject);
+}
+
+/**
+ * ab8500_chargalg_sysfs_init() - init of sysfs entry
+ * @di: pointer to the struct ab8500_chargalg
+ *
+ * This function adds an entry in sysfs.
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8500_fg_sysfs_init(struct ab8500_fg *di)
+{
+ int ret = 0;
+
+ ret = kobject_init_and_add(&di->fg_kobject,
+ &ab8500_fg_ktype,
+ NULL, "battery");
+ if (ret < 0)
+ dev_err(di->dev, "failed to create sysfs entry\n");
+
+ return ret;
+}
+/* Exposure to the sysfs interface <<END>> */
+
+#if defined(CONFIG_PM)
+static int ab8500_fg_resume(struct platform_device *pdev)
+{
+ struct ab8500_fg *di = platform_get_drvdata(pdev);
+
+ /*
+ * Change state if we're not charging. If we're charging we will wake
+ * up on the FG IRQ
+ */
+ if (!di->flags.charging) {
+ ab8500_fg_discharge_state_to(di, AB8500_FG_DISCHARGE_WAKEUP);
+ queue_work(di->fg_wq, &di->fg_work);
+ }
+
+ return 0;
+}
+
+static int ab8500_fg_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct ab8500_fg *di = platform_get_drvdata(pdev);
+
+ flush_delayed_work(&di->fg_periodic_work);
+
+ /*
+ * If the FG is enabled we will disable it before going to suspend
+ * only if we're not charging
+ */
+ if (di->flags.fg_enabled && !di->flags.charging)
+ ab8500_fg_coulomb_counter(di, false);
+
+ return 0;
+}
+#else
+#define ab8500_fg_suspend NULL
+#define ab8500_fg_resume NULL
+#endif
+
+static int __devexit ab8500_fg_remove(struct platform_device *pdev)
+{
+ int ret = 0;
+ struct ab8500_fg *di = platform_get_drvdata(pdev);
+
+ list_del(&di->node);
+
+ /* Disable coulomb counter */
+ ret = ab8500_fg_coulomb_counter(di, false);
+ if (ret)
+ dev_err(di->dev, "failed to disable coulomb counter\n");
+
+ destroy_workqueue(di->fg_wq);
+ ab8500_fg_sysfs_exit(di);
+
+ flush_scheduled_work();
+ power_supply_unregister(&di->fg_psy);
+ platform_set_drvdata(pdev, NULL);
+ kfree(di);
+ return ret;
+}
+
+/* ab8500 fg driver interrupts and their respective isr */
+static struct ab8500_fg_interrupts ab8500_fg_irq[] = {
+ {"NCONV_ACCU", ab8500_fg_cc_convend_handler},
+ {"BATT_OVV", ab8500_fg_batt_ovv_handler},
+ {"LOW_BAT_F", ab8500_fg_lowbatf_handler},
+ {"CC_INT_CALIB", ab8500_fg_cc_int_calib_handler},
+ {"CCEOC", ab8500_fg_cc_data_end_handler},
+};
+
+static int __devinit ab8500_fg_probe(struct platform_device *pdev)
+{
+ int i, irq;
+ int ret = 0;
+ struct abx500_bm_plat_data *plat_data;
+
+ struct ab8500_fg *di =
+ kzalloc(sizeof(struct ab8500_fg), GFP_KERNEL);
+ if (!di)
+ return -ENOMEM;
+
+ mutex_init(&di->cc_lock);
+
+ /* get parent data */
+ di->dev = &pdev->dev;
+ di->parent = dev_get_drvdata(pdev->dev.parent);
+ di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+
+ /* get fg specific platform data */
+ plat_data = pdev->dev.platform_data;
+ di->pdata = plat_data->fg;
+ if (!di->pdata) {
+ dev_err(di->dev, "no fg platform data supplied\n");
+ ret = -EINVAL;
+ goto free_device_info;
+ }
+
+ /* get battery specific platform data */
+ di->bat = plat_data->battery;
+ if (!di->bat) {
+ dev_err(di->dev, "no battery platform data supplied\n");
+ ret = -EINVAL;
+ goto free_device_info;
+ }
+
+ di->fg_psy.name = "ab8500_fg";
+ di->fg_psy.type = POWER_SUPPLY_TYPE_BATTERY;
+ di->fg_psy.properties = ab8500_fg_props;
+ di->fg_psy.num_properties = ARRAY_SIZE(ab8500_fg_props);
+ di->fg_psy.get_property = ab8500_fg_get_property;
+ di->fg_psy.supplied_to = di->pdata->supplied_to;
+ di->fg_psy.num_supplicants = di->pdata->num_supplicants;
+ di->fg_psy.external_power_changed = ab8500_fg_external_power_changed;
+
+ di->bat_cap.max_mah_design = MILLI_TO_MICRO *
+ di->bat->bat_type[di->bat->batt_id].charge_full_design;
+
+ di->bat_cap.max_mah = di->bat_cap.max_mah_design;
+
+ di->vbat_nom = di->bat->bat_type[di->bat->batt_id].nominal_voltage;
+
+ di->init_capacity = true;
+
+ ab8500_fg_charge_state_to(di, AB8500_FG_CHARGE_INIT);
+ ab8500_fg_discharge_state_to(di, AB8500_FG_DISCHARGE_INIT);
+
+ /* Create a work queue for running the FG algorithm */
+ di->fg_wq = create_singlethread_workqueue("ab8500_fg_wq");
+ if (di->fg_wq == NULL) {
+ dev_err(di->dev, "failed to create work queue\n");
+ goto free_device_info;
+ }
+
+ /* Init work for running the fg algorithm instantly */
+ INIT_WORK(&di->fg_work, ab8500_fg_instant_work);
+
+ /* Init work for getting the battery accumulated current */
+ INIT_WORK(&di->fg_acc_cur_work, ab8500_fg_acc_cur_work);
+
+ /* Init work for reinitialising the fg algorithm */
+ INIT_DELAYED_WORK_DEFERRABLE(&di->fg_reinit_work,
+ ab8500_fg_reinit_work);
+
+ /* Work delayed Queue to run the state machine */
+ INIT_DELAYED_WORK_DEFERRABLE(&di->fg_periodic_work,
+ ab8500_fg_periodic_work);
+
+ /* Work to check low battery condition */
+ INIT_DELAYED_WORK_DEFERRABLE(&di->fg_low_bat_work,
+ ab8500_fg_low_bat_work);
+
+ /* Init work for HW failure check */
+ INIT_DELAYED_WORK_DEFERRABLE(&di->fg_check_hw_failure_work,
+ ab8500_fg_check_hw_failure_work);
+
+ /* Initialize OVV, and other registers */
+ ret = ab8500_fg_init_hw_registers(di);
+ if (ret) {
+ dev_err(di->dev, "failed to initialize registers\n");
+ goto free_inst_curr_wq;
+ }
+
+ /* Consider battery unknown until we're informed otherwise */
+ di->flags.batt_unknown = true;
+ di->flags.batt_id_received = false;
+
+ /* Register FG power supply class */
+ ret = power_supply_register(di->dev, &di->fg_psy);
+ if (ret) {
+ dev_err(di->dev, "failed to register FG psy\n");
+ goto free_inst_curr_wq;
+ }
+
+ di->fg_samples = SEC_TO_SAMPLE(di->bat->fg_params->init_timer);
+ ab8500_fg_coulomb_counter(di, true);
+
+ /* Initialize completion used to notify completion of inst current */
+ init_completion(&di->ab8500_fg_complete);
+
+ /* Register interrupts */
+ for (i = 0; i < ARRAY_SIZE(ab8500_fg_irq); i++) {
+ irq = platform_get_irq_byname(pdev, ab8500_fg_irq[i].name);
+ ret = request_threaded_irq(irq, NULL, ab8500_fg_irq[i].isr,
+ IRQF_SHARED | IRQF_NO_SUSPEND,
+ ab8500_fg_irq[i].name, di);
+
+ if (ret != 0) {
+ dev_err(di->dev, "failed to request %s IRQ %d: %d\n"
+ , ab8500_fg_irq[i].name, irq, ret);
+ goto free_irq;
+ }
+ dev_dbg(di->dev, "Requested %s IRQ %d: %d\n",
+ ab8500_fg_irq[i].name, irq, ret);
+ }
+ di->irq = platform_get_irq_byname(pdev, "CCEOC");
+ disable_irq(di->irq);
+
+ platform_set_drvdata(pdev, di);
+
+ ret = ab8500_fg_sysfs_init(di);
+ if (ret) {
+ dev_err(di->dev, "failed to create sysfs entry\n");
+ goto free_irq;
+ }
+
+ /* Calibrate the fg first time */
+ di->flags.calibrate = true;
+ di->calib_state = AB8500_FG_CALIB_INIT;
+
+ /* Use room temp as default value until we get an update from driver. */
+ di->bat_temp = 210;
+
+ /* Run the FG algorithm */
+ queue_delayed_work(di->fg_wq, &di->fg_periodic_work, 0);
+
+ list_add_tail(&di->node, &ab8500_fg_list);
+
+ return ret;
+
+free_irq:
+ power_supply_unregister(&di->fg_psy);
+
+ /* We also have to free all successfully registered irqs */
+ for (i = i - 1; i >= 0; i--) {
+ irq = platform_get_irq_byname(pdev, ab8500_fg_irq[i].name);
+ free_irq(irq, di);
+ }
+free_inst_curr_wq:
+ destroy_workqueue(di->fg_wq);
+free_device_info:
+ kfree(di);
+
+ return ret;
+}
+
+static struct platform_driver ab8500_fg_driver = {
+ .probe = ab8500_fg_probe,
+ .remove = __devexit_p(ab8500_fg_remove),
+ .suspend = ab8500_fg_suspend,
+ .resume = ab8500_fg_resume,
+ .driver = {
+ .name = "ab8500-fg",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init ab8500_fg_init(void)
+{
+ return platform_driver_register(&ab8500_fg_driver);
+}
+
+static void __exit ab8500_fg_exit(void)
+{
+ platform_driver_unregister(&ab8500_fg_driver);
+}
+
+subsys_initcall_sync(ab8500_fg_init);
+module_exit(ab8500_fg_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Johan Palsson, Karl Komierowski");
+MODULE_ALIAS("platform:ab8500-fg");
+MODULE_DESCRIPTION("AB8500 Fuel Gauge driver");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/abx500_chargalg.c b/ap/os/linux/linux-3.4.x/drivers/power/abx500_chargalg.c
new file mode 100644
index 0000000..d8cd151
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/abx500_chargalg.c
@@ -0,0 +1,1921 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2012
+ *
+ * Charging algorithm driver for abx500 variants
+ *
+ * License Terms: GNU General Public License v2
+ * Authors:
+ * Johan Palsson <johan.palsson@stericsson.com>
+ * Karl Komierowski <karl.komierowski@stericsson.com>
+ * Arun R Murthy <arun.murthy@stericsson.com>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/completion.h>
+#include <linux/workqueue.h>
+#include <linux/kobject.h>
+#include <linux/mfd/abx500.h>
+#include <linux/mfd/abx500/ux500_chargalg.h>
+#include <linux/mfd/abx500/ab8500-bm.h>
+
+/* Watchdog kick interval */
+#define CHG_WD_INTERVAL (6 * HZ)
+
+/* End-of-charge criteria counter */
+#define EOC_COND_CNT 10
+
+/* Recharge criteria counter */
+#define RCH_COND_CNT 3
+
+#define to_abx500_chargalg_device_info(x) container_of((x), \
+ struct abx500_chargalg, chargalg_psy);
+
+enum abx500_chargers {
+ NO_CHG,
+ AC_CHG,
+ USB_CHG,
+};
+
+struct abx500_chargalg_charger_info {
+ enum abx500_chargers conn_chg;
+ enum abx500_chargers prev_conn_chg;
+ enum abx500_chargers online_chg;
+ enum abx500_chargers prev_online_chg;
+ enum abx500_chargers charger_type;
+ bool usb_chg_ok;
+ bool ac_chg_ok;
+ int usb_volt;
+ int usb_curr;
+ int ac_volt;
+ int ac_curr;
+ int usb_vset;
+ int usb_iset;
+ int ac_vset;
+ int ac_iset;
+};
+
+struct abx500_chargalg_suspension_status {
+ bool suspended_change;
+ bool ac_suspended;
+ bool usb_suspended;
+};
+
+struct abx500_chargalg_battery_data {
+ int temp;
+ int volt;
+ int avg_curr;
+ int inst_curr;
+ int percent;
+};
+
+enum abx500_chargalg_states {
+ STATE_HANDHELD_INIT,
+ STATE_HANDHELD,
+ STATE_CHG_NOT_OK_INIT,
+ STATE_CHG_NOT_OK,
+ STATE_HW_TEMP_PROTECT_INIT,
+ STATE_HW_TEMP_PROTECT,
+ STATE_NORMAL_INIT,
+ STATE_NORMAL,
+ STATE_WAIT_FOR_RECHARGE_INIT,
+ STATE_WAIT_FOR_RECHARGE,
+ STATE_MAINTENANCE_A_INIT,
+ STATE_MAINTENANCE_A,
+ STATE_MAINTENANCE_B_INIT,
+ STATE_MAINTENANCE_B,
+ STATE_TEMP_UNDEROVER_INIT,
+ STATE_TEMP_UNDEROVER,
+ STATE_TEMP_LOWHIGH_INIT,
+ STATE_TEMP_LOWHIGH,
+ STATE_SUSPENDED_INIT,
+ STATE_SUSPENDED,
+ STATE_OVV_PROTECT_INIT,
+ STATE_OVV_PROTECT,
+ STATE_SAFETY_TIMER_EXPIRED_INIT,
+ STATE_SAFETY_TIMER_EXPIRED,
+ STATE_BATT_REMOVED_INIT,
+ STATE_BATT_REMOVED,
+ STATE_WD_EXPIRED_INIT,
+ STATE_WD_EXPIRED,
+};
+
+static const char *states[] = {
+ "HANDHELD_INIT",
+ "HANDHELD",
+ "CHG_NOT_OK_INIT",
+ "CHG_NOT_OK",
+ "HW_TEMP_PROTECT_INIT",
+ "HW_TEMP_PROTECT",
+ "NORMAL_INIT",
+ "NORMAL",
+ "WAIT_FOR_RECHARGE_INIT",
+ "WAIT_FOR_RECHARGE",
+ "MAINTENANCE_A_INIT",
+ "MAINTENANCE_A",
+ "MAINTENANCE_B_INIT",
+ "MAINTENANCE_B",
+ "TEMP_UNDEROVER_INIT",
+ "TEMP_UNDEROVER",
+ "TEMP_LOWHIGH_INIT",
+ "TEMP_LOWHIGH",
+ "SUSPENDED_INIT",
+ "SUSPENDED",
+ "OVV_PROTECT_INIT",
+ "OVV_PROTECT",
+ "SAFETY_TIMER_EXPIRED_INIT",
+ "SAFETY_TIMER_EXPIRED",
+ "BATT_REMOVED_INIT",
+ "BATT_REMOVED",
+ "WD_EXPIRED_INIT",
+ "WD_EXPIRED",
+};
+
+struct abx500_chargalg_events {
+ bool batt_unknown;
+ bool mainextchnotok;
+ bool batt_ovv;
+ bool batt_rem;
+ bool btemp_underover;
+ bool btemp_lowhigh;
+ bool main_thermal_prot;
+ bool usb_thermal_prot;
+ bool main_ovv;
+ bool vbus_ovv;
+ bool usbchargernotok;
+ bool safety_timer_expired;
+ bool maintenance_timer_expired;
+ bool ac_wd_expired;
+ bool usb_wd_expired;
+ bool ac_cv_active;
+ bool usb_cv_active;
+ bool vbus_collapsed;
+};
+
+/**
+ * struct abx500_charge_curr_maximization - Charger maximization parameters
+ * @original_iset: the non optimized/maximised charger current
+ * @current_iset: the charging current used at this moment
+ * @test_delta_i: the delta between the current we want to charge and the
+ current that is really going into the battery
+ * @condition_cnt: number of iterations needed before a new charger current
+ is set
+ * @max_current: maximum charger current
+ * @wait_cnt: to avoid too fast current step down in case of charger
+ * voltage collapse, we insert this delay between step
+ * down
+ * @level: tells in how many steps the charging current has been
+ increased
+ */
+struct abx500_charge_curr_maximization {
+ int original_iset;
+ int current_iset;
+ int test_delta_i;
+ int condition_cnt;
+ int max_current;
+ int wait_cnt;
+ u8 level;
+};
+
+enum maxim_ret {
+ MAXIM_RET_NOACTION,
+ MAXIM_RET_CHANGE,
+ MAXIM_RET_IBAT_TOO_HIGH,
+};
+
+/**
+ * struct abx500_chargalg - abx500 Charging algorithm device information
+ * @dev: pointer to the structure device
+ * @charge_status: battery operating status
+ * @eoc_cnt: counter used to determine end-of_charge
+ * @rch_cnt: counter used to determine start of recharge
+ * @maintenance_chg: indicate if maintenance charge is active
+ * @t_hyst_norm temperature hysteresis when the temperature has been
+ * over or under normal limits
+ * @t_hyst_lowhigh temperature hysteresis when the temperature has been
+ * over or under the high or low limits
+ * @charge_state: current state of the charging algorithm
+ * @ccm charging current maximization parameters
+ * @chg_info: information about connected charger types
+ * @batt_data: data of the battery
+ * @susp_status: current charger suspension status
+ * @pdata: pointer to the abx500_chargalg platform data
+ * @bat: pointer to the abx500_bm platform data
+ * @chargalg_psy: structure that holds the battery properties exposed by
+ * the charging algorithm
+ * @events: structure for information about events triggered
+ * @chargalg_wq: work queue for running the charging algorithm
+ * @chargalg_periodic_work: work to run the charging algorithm periodically
+ * @chargalg_wd_work: work to kick the charger watchdog periodically
+ * @chargalg_work: work to run the charging algorithm instantly
+ * @safety_timer: charging safety timer
+ * @maintenance_timer: maintenance charging timer
+ * @chargalg_kobject: structure of type kobject
+ */
+struct abx500_chargalg {
+ struct device *dev;
+ int charge_status;
+ int eoc_cnt;
+ int rch_cnt;
+ bool maintenance_chg;
+ int t_hyst_norm;
+ int t_hyst_lowhigh;
+ enum abx500_chargalg_states charge_state;
+ struct abx500_charge_curr_maximization ccm;
+ struct abx500_chargalg_charger_info chg_info;
+ struct abx500_chargalg_battery_data batt_data;
+ struct abx500_chargalg_suspension_status susp_status;
+ struct abx500_chargalg_platform_data *pdata;
+ struct abx500_bm_data *bat;
+ struct power_supply chargalg_psy;
+ struct ux500_charger *ac_chg;
+ struct ux500_charger *usb_chg;
+ struct abx500_chargalg_events events;
+ struct workqueue_struct *chargalg_wq;
+ struct delayed_work chargalg_periodic_work;
+ struct delayed_work chargalg_wd_work;
+ struct work_struct chargalg_work;
+ struct timer_list safety_timer;
+ struct timer_list maintenance_timer;
+ struct kobject chargalg_kobject;
+};
+
+/* Main battery properties */
+static enum power_supply_property abx500_chargalg_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+};
+
+/**
+ * abx500_chargalg_safety_timer_expired() - Expiration of the safety timer
+ * @data: pointer to the abx500_chargalg structure
+ *
+ * This function gets called when the safety timer for the charger
+ * expires
+ */
+static void abx500_chargalg_safety_timer_expired(unsigned long data)
+{
+ struct abx500_chargalg *di = (struct abx500_chargalg *) data;
+ dev_err(di->dev, "Safety timer expired\n");
+ di->events.safety_timer_expired = true;
+
+ /* Trigger execution of the algorithm instantly */
+ queue_work(di->chargalg_wq, &di->chargalg_work);
+}
+
+/**
+ * abx500_chargalg_maintenance_timer_expired() - Expiration of
+ * the maintenance timer
+ * @i: pointer to the abx500_chargalg structure
+ *
+ * This function gets called when the maintenence timer
+ * expires
+ */
+static void abx500_chargalg_maintenance_timer_expired(unsigned long data)
+{
+
+ struct abx500_chargalg *di = (struct abx500_chargalg *) data;
+ dev_dbg(di->dev, "Maintenance timer expired\n");
+ di->events.maintenance_timer_expired = true;
+
+ /* Trigger execution of the algorithm instantly */
+ queue_work(di->chargalg_wq, &di->chargalg_work);
+}
+
+/**
+ * abx500_chargalg_state_to() - Change charge state
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * This function gets called when a charge state change should occur
+ */
+static void abx500_chargalg_state_to(struct abx500_chargalg *di,
+ enum abx500_chargalg_states state)
+{
+ dev_dbg(di->dev,
+ "State changed: %s (From state: [%d] %s =to=> [%d] %s )\n",
+ di->charge_state == state ? "NO" : "YES",
+ di->charge_state,
+ states[di->charge_state],
+ state,
+ states[state]);
+
+ di->charge_state = state;
+}
+
+/**
+ * abx500_chargalg_check_charger_connection() - Check charger connection change
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * This function will check if there is a change in the charger connection
+ * and change charge state accordingly. AC has precedence over USB.
+ */
+static int abx500_chargalg_check_charger_connection(struct abx500_chargalg *di)
+{
+ if (di->chg_info.conn_chg != di->chg_info.prev_conn_chg ||
+ di->susp_status.suspended_change) {
+ /*
+ * Charger state changed or suspension
+ * has changed since last update
+ */
+ if ((di->chg_info.conn_chg & AC_CHG) &&
+ !di->susp_status.ac_suspended) {
+ dev_dbg(di->dev, "Charging source is AC\n");
+ if (di->chg_info.charger_type != AC_CHG) {
+ di->chg_info.charger_type = AC_CHG;
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+ }
+ } else if ((di->chg_info.conn_chg & USB_CHG) &&
+ !di->susp_status.usb_suspended) {
+ dev_dbg(di->dev, "Charging source is USB\n");
+ di->chg_info.charger_type = USB_CHG;
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+ } else if (di->chg_info.conn_chg &&
+ (di->susp_status.ac_suspended ||
+ di->susp_status.usb_suspended)) {
+ dev_dbg(di->dev, "Charging is suspended\n");
+ di->chg_info.charger_type = NO_CHG;
+ abx500_chargalg_state_to(di, STATE_SUSPENDED_INIT);
+ } else {
+ dev_dbg(di->dev, "Charging source is OFF\n");
+ di->chg_info.charger_type = NO_CHG;
+ abx500_chargalg_state_to(di, STATE_HANDHELD_INIT);
+ }
+ di->chg_info.prev_conn_chg = di->chg_info.conn_chg;
+ di->susp_status.suspended_change = false;
+ }
+ return di->chg_info.conn_chg;
+}
+
+/**
+ * abx500_chargalg_start_safety_timer() - Start charging safety timer
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * The safety timer is used to avoid overcharging of old or bad batteries.
+ * There are different timers for AC and USB
+ */
+static void abx500_chargalg_start_safety_timer(struct abx500_chargalg *di)
+{
+ unsigned long timer_expiration = 0;
+
+ switch (di->chg_info.charger_type) {
+ case AC_CHG:
+ timer_expiration =
+ round_jiffies(jiffies +
+ (di->bat->main_safety_tmr_h * 3600 * HZ));
+ break;
+
+ case USB_CHG:
+ timer_expiration =
+ round_jiffies(jiffies +
+ (di->bat->usb_safety_tmr_h * 3600 * HZ));
+ break;
+
+ default:
+ dev_err(di->dev, "Unknown charger to charge from\n");
+ break;
+ }
+
+ di->events.safety_timer_expired = false;
+ di->safety_timer.expires = timer_expiration;
+ if (!timer_pending(&di->safety_timer))
+ add_timer(&di->safety_timer);
+ else
+ mod_timer(&di->safety_timer, timer_expiration);
+}
+
+/**
+ * abx500_chargalg_stop_safety_timer() - Stop charging safety timer
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * The safety timer is stopped whenever the NORMAL state is exited
+ */
+static void abx500_chargalg_stop_safety_timer(struct abx500_chargalg *di)
+{
+ di->events.safety_timer_expired = false;
+ del_timer(&di->safety_timer);
+}
+
+/**
+ * abx500_chargalg_start_maintenance_timer() - Start charging maintenance timer
+ * @di: pointer to the abx500_chargalg structure
+ * @duration: duration of ther maintenance timer in hours
+ *
+ * The maintenance timer is used to maintain the charge in the battery once
+ * the battery is considered full. These timers are chosen to match the
+ * discharge curve of the battery
+ */
+static void abx500_chargalg_start_maintenance_timer(struct abx500_chargalg *di,
+ int duration)
+{
+ unsigned long timer_expiration;
+
+ /* Convert from hours to jiffies */
+ timer_expiration = round_jiffies(jiffies + (duration * 3600 * HZ));
+
+ di->events.maintenance_timer_expired = false;
+ di->maintenance_timer.expires = timer_expiration;
+ if (!timer_pending(&di->maintenance_timer))
+ add_timer(&di->maintenance_timer);
+ else
+ mod_timer(&di->maintenance_timer, timer_expiration);
+}
+
+/**
+ * abx500_chargalg_stop_maintenance_timer() - Stop maintenance timer
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * The maintenance timer is stopped whenever maintenance ends or when another
+ * state is entered
+ */
+static void abx500_chargalg_stop_maintenance_timer(struct abx500_chargalg *di)
+{
+ di->events.maintenance_timer_expired = false;
+ del_timer(&di->maintenance_timer);
+}
+
+/**
+ * abx500_chargalg_kick_watchdog() - Kick charger watchdog
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * The charger watchdog have to be kicked periodically whenever the charger is
+ * on, else the ABB will reset the system
+ */
+static int abx500_chargalg_kick_watchdog(struct abx500_chargalg *di)
+{
+ /* Check if charger exists and kick watchdog if charging */
+ if (di->ac_chg && di->ac_chg->ops.kick_wd &&
+ di->chg_info.online_chg & AC_CHG)
+ return di->ac_chg->ops.kick_wd(di->ac_chg);
+ else if (di->usb_chg && di->usb_chg->ops.kick_wd &&
+ di->chg_info.online_chg & USB_CHG)
+ return di->usb_chg->ops.kick_wd(di->usb_chg);
+
+ return -ENXIO;
+}
+
+/**
+ * abx500_chargalg_ac_en() - Turn on/off the AC charger
+ * @di: pointer to the abx500_chargalg structure
+ * @enable: charger on/off
+ * @vset: requested charger output voltage
+ * @iset: requested charger output current
+ *
+ * The AC charger will be turned on/off with the requested charge voltage and
+ * current
+ */
+static int abx500_chargalg_ac_en(struct abx500_chargalg *di, int enable,
+ int vset, int iset)
+{
+ if (!di->ac_chg || !di->ac_chg->ops.enable)
+ return -ENXIO;
+
+ /* Select maximum of what both the charger and the battery supports */
+ if (di->ac_chg->max_out_volt)
+ vset = min(vset, di->ac_chg->max_out_volt);
+ if (di->ac_chg->max_out_curr)
+ iset = min(iset, di->ac_chg->max_out_curr);
+
+ di->chg_info.ac_iset = iset;
+ di->chg_info.ac_vset = vset;
+
+ return di->ac_chg->ops.enable(di->ac_chg, enable, vset, iset);
+}
+
+/**
+ * abx500_chargalg_usb_en() - Turn on/off the USB charger
+ * @di: pointer to the abx500_chargalg structure
+ * @enable: charger on/off
+ * @vset: requested charger output voltage
+ * @iset: requested charger output current
+ *
+ * The USB charger will be turned on/off with the requested charge voltage and
+ * current
+ */
+static int abx500_chargalg_usb_en(struct abx500_chargalg *di, int enable,
+ int vset, int iset)
+{
+ if (!di->usb_chg || !di->usb_chg->ops.enable)
+ return -ENXIO;
+
+ /* Select maximum of what both the charger and the battery supports */
+ if (di->usb_chg->max_out_volt)
+ vset = min(vset, di->usb_chg->max_out_volt);
+ if (di->usb_chg->max_out_curr)
+ iset = min(iset, di->usb_chg->max_out_curr);
+
+ di->chg_info.usb_iset = iset;
+ di->chg_info.usb_vset = vset;
+
+ return di->usb_chg->ops.enable(di->usb_chg, enable, vset, iset);
+}
+
+/**
+ * abx500_chargalg_update_chg_curr() - Update charger current
+ * @di: pointer to the abx500_chargalg structure
+ * @iset: requested charger output current
+ *
+ * The charger output current will be updated for the charger
+ * that is currently in use
+ */
+static int abx500_chargalg_update_chg_curr(struct abx500_chargalg *di,
+ int iset)
+{
+ /* Check if charger exists and update current if charging */
+ if (di->ac_chg && di->ac_chg->ops.update_curr &&
+ di->chg_info.charger_type & AC_CHG) {
+ /*
+ * Select maximum of what both the charger
+ * and the battery supports
+ */
+ if (di->ac_chg->max_out_curr)
+ iset = min(iset, di->ac_chg->max_out_curr);
+
+ di->chg_info.ac_iset = iset;
+
+ return di->ac_chg->ops.update_curr(di->ac_chg, iset);
+ } else if (di->usb_chg && di->usb_chg->ops.update_curr &&
+ di->chg_info.charger_type & USB_CHG) {
+ /*
+ * Select maximum of what both the charger
+ * and the battery supports
+ */
+ if (di->usb_chg->max_out_curr)
+ iset = min(iset, di->usb_chg->max_out_curr);
+
+ di->chg_info.usb_iset = iset;
+
+ return di->usb_chg->ops.update_curr(di->usb_chg, iset);
+ }
+
+ return -ENXIO;
+}
+
+/**
+ * abx500_chargalg_stop_charging() - Stop charging
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * This function is called from any state where charging should be stopped.
+ * All charging is disabled and all status parameters and timers are changed
+ * accordingly
+ */
+static void abx500_chargalg_stop_charging(struct abx500_chargalg *di)
+{
+ abx500_chargalg_ac_en(di, false, 0, 0);
+ abx500_chargalg_usb_en(di, false, 0, 0);
+ abx500_chargalg_stop_safety_timer(di);
+ abx500_chargalg_stop_maintenance_timer(di);
+ di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ di->maintenance_chg = false;
+ cancel_delayed_work(&di->chargalg_wd_work);
+ power_supply_changed(&di->chargalg_psy);
+}
+
+/**
+ * abx500_chargalg_hold_charging() - Pauses charging
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * This function is called in the case where maintenance charging has been
+ * disabled and instead a battery voltage mode is entered to check when the
+ * battery voltage has reached a certain recharge voltage
+ */
+static void abx500_chargalg_hold_charging(struct abx500_chargalg *di)
+{
+ abx500_chargalg_ac_en(di, false, 0, 0);
+ abx500_chargalg_usb_en(di, false, 0, 0);
+ abx500_chargalg_stop_safety_timer(di);
+ abx500_chargalg_stop_maintenance_timer(di);
+ di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
+ di->maintenance_chg = false;
+ cancel_delayed_work(&di->chargalg_wd_work);
+ power_supply_changed(&di->chargalg_psy);
+}
+
+/**
+ * abx500_chargalg_start_charging() - Start the charger
+ * @di: pointer to the abx500_chargalg structure
+ * @vset: requested charger output voltage
+ * @iset: requested charger output current
+ *
+ * A charger will be enabled depending on the requested charger type that was
+ * detected previously.
+ */
+static void abx500_chargalg_start_charging(struct abx500_chargalg *di,
+ int vset, int iset)
+{
+ switch (di->chg_info.charger_type) {
+ case AC_CHG:
+ dev_dbg(di->dev,
+ "AC parameters: Vset %d, Ich %d\n", vset, iset);
+ abx500_chargalg_usb_en(di, false, 0, 0);
+ abx500_chargalg_ac_en(di, true, vset, iset);
+ break;
+
+ case USB_CHG:
+ dev_dbg(di->dev,
+ "USB parameters: Vset %d, Ich %d\n", vset, iset);
+ abx500_chargalg_ac_en(di, false, 0, 0);
+ abx500_chargalg_usb_en(di, true, vset, iset);
+ break;
+
+ default:
+ dev_err(di->dev, "Unknown charger to charge from\n");
+ break;
+ }
+}
+
+/**
+ * abx500_chargalg_check_temp() - Check battery temperature ranges
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * The battery temperature is checked against the predefined limits and the
+ * charge state is changed accordingly
+ */
+static void abx500_chargalg_check_temp(struct abx500_chargalg *di)
+{
+ if (di->batt_data.temp > (di->bat->temp_low + di->t_hyst_norm) &&
+ di->batt_data.temp < (di->bat->temp_high - di->t_hyst_norm)) {
+ /* Temp OK! */
+ di->events.btemp_underover = false;
+ di->events.btemp_lowhigh = false;
+ di->t_hyst_norm = 0;
+ di->t_hyst_lowhigh = 0;
+ } else {
+ if (((di->batt_data.temp >= di->bat->temp_high) &&
+ (di->batt_data.temp <
+ (di->bat->temp_over - di->t_hyst_lowhigh))) ||
+ ((di->batt_data.temp >
+ (di->bat->temp_under + di->t_hyst_lowhigh)) &&
+ (di->batt_data.temp <= di->bat->temp_low))) {
+ /* TEMP minor!!!!! */
+ di->events.btemp_underover = false;
+ di->events.btemp_lowhigh = true;
+ di->t_hyst_norm = di->bat->temp_hysteresis;
+ di->t_hyst_lowhigh = 0;
+ } else if (di->batt_data.temp <= di->bat->temp_under ||
+ di->batt_data.temp >= di->bat->temp_over) {
+ /* TEMP major!!!!! */
+ di->events.btemp_underover = true;
+ di->events.btemp_lowhigh = false;
+ di->t_hyst_norm = 0;
+ di->t_hyst_lowhigh = di->bat->temp_hysteresis;
+ } else {
+ /* Within hysteresis */
+ dev_dbg(di->dev, "Within hysteresis limit temp: %d "
+ "hyst_lowhigh %d, hyst normal %d\n",
+ di->batt_data.temp, di->t_hyst_lowhigh,
+ di->t_hyst_norm);
+ }
+ }
+}
+
+/**
+ * abx500_chargalg_check_charger_voltage() - Check charger voltage
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * Charger voltage is checked against maximum limit
+ */
+static void abx500_chargalg_check_charger_voltage(struct abx500_chargalg *di)
+{
+ if (di->chg_info.usb_volt > di->bat->chg_params->usb_volt_max)
+ di->chg_info.usb_chg_ok = false;
+ else
+ di->chg_info.usb_chg_ok = true;
+
+ if (di->chg_info.ac_volt > di->bat->chg_params->ac_volt_max)
+ di->chg_info.ac_chg_ok = false;
+ else
+ di->chg_info.ac_chg_ok = true;
+
+}
+
+/**
+ * abx500_chargalg_end_of_charge() - Check if end-of-charge criteria is fulfilled
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * End-of-charge criteria is fulfilled when the battery voltage is above a
+ * certain limit and the battery current is below a certain limit for a
+ * predefined number of consecutive seconds. If true, the battery is full
+ */
+static void abx500_chargalg_end_of_charge(struct abx500_chargalg *di)
+{
+ if (di->charge_status == POWER_SUPPLY_STATUS_CHARGING &&
+ di->charge_state == STATE_NORMAL &&
+ !di->maintenance_chg && (di->batt_data.volt >=
+ di->bat->bat_type[di->bat->batt_id].termination_vol ||
+ di->events.usb_cv_active || di->events.ac_cv_active) &&
+ di->batt_data.avg_curr <
+ di->bat->bat_type[di->bat->batt_id].termination_curr &&
+ di->batt_data.avg_curr > 0) {
+ if (++di->eoc_cnt >= EOC_COND_CNT) {
+ di->eoc_cnt = 0;
+ di->charge_status = POWER_SUPPLY_STATUS_FULL;
+ di->maintenance_chg = true;
+ dev_dbg(di->dev, "EOC reached!\n");
+ power_supply_changed(&di->chargalg_psy);
+ } else {
+ dev_dbg(di->dev,
+ " EOC limit reached for the %d"
+ " time, out of %d before EOC\n",
+ di->eoc_cnt,
+ EOC_COND_CNT);
+ }
+ } else {
+ di->eoc_cnt = 0;
+ }
+}
+
+static void init_maxim_chg_curr(struct abx500_chargalg *di)
+{
+ di->ccm.original_iset =
+ di->bat->bat_type[di->bat->batt_id].normal_cur_lvl;
+ di->ccm.current_iset =
+ di->bat->bat_type[di->bat->batt_id].normal_cur_lvl;
+ di->ccm.test_delta_i = di->bat->maxi->charger_curr_step;
+ di->ccm.max_current = di->bat->maxi->chg_curr;
+ di->ccm.condition_cnt = di->bat->maxi->wait_cycles;
+ di->ccm.level = 0;
+}
+
+/**
+ * abx500_chargalg_chg_curr_maxim - increases the charger current to
+ * compensate for the system load
+ * @di pointer to the abx500_chargalg structure
+ *
+ * This maximization function is used to raise the charger current to get the
+ * battery current as close to the optimal value as possible. The battery
+ * current during charging is affected by the system load
+ */
+static enum maxim_ret abx500_chargalg_chg_curr_maxim(struct abx500_chargalg *di)
+{
+ int delta_i;
+
+ if (!di->bat->maxi->ena_maxi)
+ return MAXIM_RET_NOACTION;
+
+ delta_i = di->ccm.original_iset - di->batt_data.inst_curr;
+
+ if (di->events.vbus_collapsed) {
+ dev_dbg(di->dev, "Charger voltage has collapsed %d\n",
+ di->ccm.wait_cnt);
+ if (di->ccm.wait_cnt == 0) {
+ dev_dbg(di->dev, "lowering current\n");
+ di->ccm.wait_cnt++;
+ di->ccm.condition_cnt = di->bat->maxi->wait_cycles;
+ di->ccm.max_current =
+ di->ccm.current_iset - di->ccm.test_delta_i;
+ di->ccm.current_iset = di->ccm.max_current;
+ di->ccm.level--;
+ return MAXIM_RET_CHANGE;
+ } else {
+ dev_dbg(di->dev, "waiting\n");
+ /* Let's go in here twice before lowering curr again */
+ di->ccm.wait_cnt = (di->ccm.wait_cnt + 1) % 3;
+ return MAXIM_RET_NOACTION;
+ }
+ }
+
+ di->ccm.wait_cnt = 0;
+
+ if ((di->batt_data.inst_curr > di->ccm.original_iset)) {
+ dev_dbg(di->dev, " Maximization Ibat (%dmA) too high"
+ " (limit %dmA) (current iset: %dmA)!\n",
+ di->batt_data.inst_curr, di->ccm.original_iset,
+ di->ccm.current_iset);
+
+ if (di->ccm.current_iset == di->ccm.original_iset)
+ return MAXIM_RET_NOACTION;
+
+ di->ccm.condition_cnt = di->bat->maxi->wait_cycles;
+ di->ccm.current_iset = di->ccm.original_iset;
+ di->ccm.level = 0;
+
+ return MAXIM_RET_IBAT_TOO_HIGH;
+ }
+
+ if (delta_i > di->ccm.test_delta_i &&
+ (di->ccm.current_iset + di->ccm.test_delta_i) <
+ di->ccm.max_current) {
+ if (di->ccm.condition_cnt-- == 0) {
+ /* Increse the iset with cco.test_delta_i */
+ di->ccm.condition_cnt = di->bat->maxi->wait_cycles;
+ di->ccm.current_iset += di->ccm.test_delta_i;
+ di->ccm.level++;
+ dev_dbg(di->dev, " Maximization needed, increase"
+ " with %d mA to %dmA (Optimal ibat: %d)"
+ " Level %d\n",
+ di->ccm.test_delta_i,
+ di->ccm.current_iset,
+ di->ccm.original_iset,
+ di->ccm.level);
+ return MAXIM_RET_CHANGE;
+ } else {
+ return MAXIM_RET_NOACTION;
+ }
+ } else {
+ di->ccm.condition_cnt = di->bat->maxi->wait_cycles;
+ return MAXIM_RET_NOACTION;
+ }
+}
+
+static void handle_maxim_chg_curr(struct abx500_chargalg *di)
+{
+ enum maxim_ret ret;
+ int result;
+
+ ret = abx500_chargalg_chg_curr_maxim(di);
+ switch (ret) {
+ case MAXIM_RET_CHANGE:
+ result = abx500_chargalg_update_chg_curr(di,
+ di->ccm.current_iset);
+ if (result)
+ dev_err(di->dev, "failed to set chg curr\n");
+ break;
+ case MAXIM_RET_IBAT_TOO_HIGH:
+ result = abx500_chargalg_update_chg_curr(di,
+ di->bat->bat_type[di->bat->batt_id].normal_cur_lvl);
+ if (result)
+ dev_err(di->dev, "failed to set chg curr\n");
+ break;
+
+ case MAXIM_RET_NOACTION:
+ default:
+ /* Do nothing..*/
+ break;
+ }
+}
+
+static int abx500_chargalg_get_ext_psy_data(struct device *dev, void *data)
+{
+ struct power_supply *psy;
+ struct power_supply *ext;
+ struct abx500_chargalg *di;
+ union power_supply_propval ret;
+ int i, j;
+ bool psy_found = false;
+
+ psy = (struct power_supply *)data;
+ ext = dev_get_drvdata(dev);
+ di = to_abx500_chargalg_device_info(psy);
+ /* For all psy where the driver name appears in any supplied_to */
+ for (i = 0; i < ext->num_supplicants; i++) {
+ if (!strcmp(ext->supplied_to[i], psy->name))
+ psy_found = true;
+ }
+ if (!psy_found)
+ return 0;
+
+ /* Go through all properties for the psy */
+ for (j = 0; j < ext->num_properties; j++) {
+ enum power_supply_property prop;
+ prop = ext->properties[j];
+
+ /* Initialize chargers if not already done */
+ if (!di->ac_chg &&
+ ext->type == POWER_SUPPLY_TYPE_MAINS)
+ di->ac_chg = psy_to_ux500_charger(ext);
+ else if (!di->usb_chg &&
+ ext->type == POWER_SUPPLY_TYPE_USB)
+ di->usb_chg = psy_to_ux500_charger(ext);
+
+ if (ext->get_property(ext, prop, &ret))
+ continue;
+ switch (prop) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_BATTERY:
+ /* Battery present */
+ if (ret.intval)
+ di->events.batt_rem = false;
+ /* Battery removed */
+ else
+ di->events.batt_rem = true;
+ break;
+ case POWER_SUPPLY_TYPE_MAINS:
+ /* AC disconnected */
+ if (!ret.intval &&
+ (di->chg_info.conn_chg & AC_CHG)) {
+ di->chg_info.prev_conn_chg =
+ di->chg_info.conn_chg;
+ di->chg_info.conn_chg &= ~AC_CHG;
+ }
+ /* AC connected */
+ else if (ret.intval &&
+ !(di->chg_info.conn_chg & AC_CHG)) {
+ di->chg_info.prev_conn_chg =
+ di->chg_info.conn_chg;
+ di->chg_info.conn_chg |= AC_CHG;
+ }
+ break;
+ case POWER_SUPPLY_TYPE_USB:
+ /* USB disconnected */
+ if (!ret.intval &&
+ (di->chg_info.conn_chg & USB_CHG)) {
+ di->chg_info.prev_conn_chg =
+ di->chg_info.conn_chg;
+ di->chg_info.conn_chg &= ~USB_CHG;
+ }
+ /* USB connected */
+ else if (ret.intval &&
+ !(di->chg_info.conn_chg & USB_CHG)) {
+ di->chg_info.prev_conn_chg =
+ di->chg_info.conn_chg;
+ di->chg_info.conn_chg |= USB_CHG;
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case POWER_SUPPLY_PROP_ONLINE:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_BATTERY:
+ break;
+ case POWER_SUPPLY_TYPE_MAINS:
+ /* AC offline */
+ if (!ret.intval &&
+ (di->chg_info.online_chg & AC_CHG)) {
+ di->chg_info.prev_online_chg =
+ di->chg_info.online_chg;
+ di->chg_info.online_chg &= ~AC_CHG;
+ }
+ /* AC online */
+ else if (ret.intval &&
+ !(di->chg_info.online_chg & AC_CHG)) {
+ di->chg_info.prev_online_chg =
+ di->chg_info.online_chg;
+ di->chg_info.online_chg |= AC_CHG;
+ queue_delayed_work(di->chargalg_wq,
+ &di->chargalg_wd_work, 0);
+ }
+ break;
+ case POWER_SUPPLY_TYPE_USB:
+ /* USB offline */
+ if (!ret.intval &&
+ (di->chg_info.online_chg & USB_CHG)) {
+ di->chg_info.prev_online_chg =
+ di->chg_info.online_chg;
+ di->chg_info.online_chg &= ~USB_CHG;
+ }
+ /* USB online */
+ else if (ret.intval &&
+ !(di->chg_info.online_chg & USB_CHG)) {
+ di->chg_info.prev_online_chg =
+ di->chg_info.online_chg;
+ di->chg_info.online_chg |= USB_CHG;
+ queue_delayed_work(di->chargalg_wq,
+ &di->chargalg_wd_work, 0);
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case POWER_SUPPLY_PROP_HEALTH:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_BATTERY:
+ break;
+ case POWER_SUPPLY_TYPE_MAINS:
+ switch (ret.intval) {
+ case POWER_SUPPLY_HEALTH_UNSPEC_FAILURE:
+ di->events.mainextchnotok = true;
+ di->events.main_thermal_prot = false;
+ di->events.main_ovv = false;
+ di->events.ac_wd_expired = false;
+ break;
+ case POWER_SUPPLY_HEALTH_DEAD:
+ di->events.ac_wd_expired = true;
+ di->events.mainextchnotok = false;
+ di->events.main_ovv = false;
+ di->events.main_thermal_prot = false;
+ break;
+ case POWER_SUPPLY_HEALTH_COLD:
+ case POWER_SUPPLY_HEALTH_OVERHEAT:
+ di->events.main_thermal_prot = true;
+ di->events.mainextchnotok = false;
+ di->events.main_ovv = false;
+ di->events.ac_wd_expired = false;
+ break;
+ case POWER_SUPPLY_HEALTH_OVERVOLTAGE:
+ di->events.main_ovv = true;
+ di->events.mainextchnotok = false;
+ di->events.main_thermal_prot = false;
+ di->events.ac_wd_expired = false;
+ break;
+ case POWER_SUPPLY_HEALTH_GOOD:
+ di->events.main_thermal_prot = false;
+ di->events.mainextchnotok = false;
+ di->events.main_ovv = false;
+ di->events.ac_wd_expired = false;
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case POWER_SUPPLY_TYPE_USB:
+ switch (ret.intval) {
+ case POWER_SUPPLY_HEALTH_UNSPEC_FAILURE:
+ di->events.usbchargernotok = true;
+ di->events.usb_thermal_prot = false;
+ di->events.vbus_ovv = false;
+ di->events.usb_wd_expired = false;
+ break;
+ case POWER_SUPPLY_HEALTH_DEAD:
+ di->events.usb_wd_expired = true;
+ di->events.usbchargernotok = false;
+ di->events.usb_thermal_prot = false;
+ di->events.vbus_ovv = false;
+ break;
+ case POWER_SUPPLY_HEALTH_COLD:
+ case POWER_SUPPLY_HEALTH_OVERHEAT:
+ di->events.usb_thermal_prot = true;
+ di->events.usbchargernotok = false;
+ di->events.vbus_ovv = false;
+ di->events.usb_wd_expired = false;
+ break;
+ case POWER_SUPPLY_HEALTH_OVERVOLTAGE:
+ di->events.vbus_ovv = true;
+ di->events.usbchargernotok = false;
+ di->events.usb_thermal_prot = false;
+ di->events.usb_wd_expired = false;
+ break;
+ case POWER_SUPPLY_HEALTH_GOOD:
+ di->events.usbchargernotok = false;
+ di->events.usb_thermal_prot = false;
+ di->events.vbus_ovv = false;
+ di->events.usb_wd_expired = false;
+ break;
+ default:
+ break;
+ }
+ default:
+ break;
+ }
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_BATTERY:
+ di->batt_data.volt = ret.intval / 1000;
+ break;
+ case POWER_SUPPLY_TYPE_MAINS:
+ di->chg_info.ac_volt = ret.intval / 1000;
+ break;
+ case POWER_SUPPLY_TYPE_USB:
+ di->chg_info.usb_volt = ret.intval / 1000;
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_MAINS:
+ /* AVG is used to indicate when we are
+ * in CV mode */
+ if (ret.intval)
+ di->events.ac_cv_active = true;
+ else
+ di->events.ac_cv_active = false;
+
+ break;
+ case POWER_SUPPLY_TYPE_USB:
+ /* AVG is used to indicate when we are
+ * in CV mode */
+ if (ret.intval)
+ di->events.usb_cv_active = true;
+ else
+ di->events.usb_cv_active = false;
+
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_BATTERY:
+ if (ret.intval)
+ di->events.batt_unknown = false;
+ else
+ di->events.batt_unknown = true;
+
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ di->batt_data.temp = ret.intval / 10;
+ break;
+
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_MAINS:
+ di->chg_info.ac_curr =
+ ret.intval / 1000;
+ break;
+ case POWER_SUPPLY_TYPE_USB:
+ di->chg_info.usb_curr =
+ ret.intval / 1000;
+ break;
+ case POWER_SUPPLY_TYPE_BATTERY:
+ di->batt_data.inst_curr = ret.intval / 1000;
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ switch (ext->type) {
+ case POWER_SUPPLY_TYPE_BATTERY:
+ di->batt_data.avg_curr = ret.intval / 1000;
+ break;
+ case POWER_SUPPLY_TYPE_USB:
+ if (ret.intval)
+ di->events.vbus_collapsed = true;
+ else
+ di->events.vbus_collapsed = false;
+ break;
+ default:
+ break;
+ }
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ di->batt_data.percent = ret.intval;
+ break;
+ default:
+ break;
+ }
+ }
+ return 0;
+}
+
+/**
+ * abx500_chargalg_external_power_changed() - callback for power supply changes
+ * @psy: pointer to the structure power_supply
+ *
+ * This function is the entry point of the pointer external_power_changed
+ * of the structure power_supply.
+ * This function gets executed when there is a change in any external power
+ * supply that this driver needs to be notified of.
+ */
+static void abx500_chargalg_external_power_changed(struct power_supply *psy)
+{
+ struct abx500_chargalg *di = to_abx500_chargalg_device_info(psy);
+
+ /*
+ * Trigger execution of the algorithm instantly and read
+ * all power_supply properties there instead
+ */
+ queue_work(di->chargalg_wq, &di->chargalg_work);
+}
+
+/**
+ * abx500_chargalg_algorithm() - Main function for the algorithm
+ * @di: pointer to the abx500_chargalg structure
+ *
+ * This is the main control function for the charging algorithm.
+ * It is called periodically or when something happens that will
+ * trigger a state change
+ */
+static void abx500_chargalg_algorithm(struct abx500_chargalg *di)
+{
+ int charger_status;
+
+ /* Collect data from all power_supply class devices */
+ class_for_each_device(power_supply_class, NULL,
+ &di->chargalg_psy, abx500_chargalg_get_ext_psy_data);
+
+ abx500_chargalg_end_of_charge(di);
+ abx500_chargalg_check_temp(di);
+ abx500_chargalg_check_charger_voltage(di);
+
+ charger_status = abx500_chargalg_check_charger_connection(di);
+ /*
+ * First check if we have a charger connected.
+ * Also we don't allow charging of unknown batteries if configured
+ * this way
+ */
+ if (!charger_status ||
+ (di->events.batt_unknown && !di->bat->chg_unknown_bat)) {
+ if (di->charge_state != STATE_HANDHELD) {
+ di->events.safety_timer_expired = false;
+ abx500_chargalg_state_to(di, STATE_HANDHELD_INIT);
+ }
+ }
+
+ /* If suspended, we should not continue checking the flags */
+ else if (di->charge_state == STATE_SUSPENDED_INIT ||
+ di->charge_state == STATE_SUSPENDED) {
+ /* We don't do anything here, just don,t continue */
+ }
+
+ /* Safety timer expiration */
+ else if (di->events.safety_timer_expired) {
+ if (di->charge_state != STATE_SAFETY_TIMER_EXPIRED)
+ abx500_chargalg_state_to(di,
+ STATE_SAFETY_TIMER_EXPIRED_INIT);
+ }
+ /*
+ * Check if any interrupts has occured
+ * that will prevent us from charging
+ */
+
+ /* Battery removed */
+ else if (di->events.batt_rem) {
+ if (di->charge_state != STATE_BATT_REMOVED)
+ abx500_chargalg_state_to(di, STATE_BATT_REMOVED_INIT);
+ }
+ /* Main or USB charger not ok. */
+ else if (di->events.mainextchnotok || di->events.usbchargernotok) {
+ /*
+ * If vbus_collapsed is set, we have to lower the charger
+ * current, which is done in the normal state below
+ */
+ if (di->charge_state != STATE_CHG_NOT_OK &&
+ !di->events.vbus_collapsed)
+ abx500_chargalg_state_to(di, STATE_CHG_NOT_OK_INIT);
+ }
+ /* VBUS, Main or VBAT OVV. */
+ else if (di->events.vbus_ovv ||
+ di->events.main_ovv ||
+ di->events.batt_ovv ||
+ !di->chg_info.usb_chg_ok ||
+ !di->chg_info.ac_chg_ok) {
+ if (di->charge_state != STATE_OVV_PROTECT)
+ abx500_chargalg_state_to(di, STATE_OVV_PROTECT_INIT);
+ }
+ /* USB Thermal, stop charging */
+ else if (di->events.main_thermal_prot ||
+ di->events.usb_thermal_prot) {
+ if (di->charge_state != STATE_HW_TEMP_PROTECT)
+ abx500_chargalg_state_to(di,
+ STATE_HW_TEMP_PROTECT_INIT);
+ }
+ /* Battery temp over/under */
+ else if (di->events.btemp_underover) {
+ if (di->charge_state != STATE_TEMP_UNDEROVER)
+ abx500_chargalg_state_to(di,
+ STATE_TEMP_UNDEROVER_INIT);
+ }
+ /* Watchdog expired */
+ else if (di->events.ac_wd_expired ||
+ di->events.usb_wd_expired) {
+ if (di->charge_state != STATE_WD_EXPIRED)
+ abx500_chargalg_state_to(di, STATE_WD_EXPIRED_INIT);
+ }
+ /* Battery temp high/low */
+ else if (di->events.btemp_lowhigh) {
+ if (di->charge_state != STATE_TEMP_LOWHIGH)
+ abx500_chargalg_state_to(di, STATE_TEMP_LOWHIGH_INIT);
+ }
+
+ dev_dbg(di->dev,
+ "[CHARGALG] Vb %d Ib_avg %d Ib_inst %d Tb %d Cap %d Maint %d "
+ "State %s Active_chg %d Chg_status %d AC %d USB %d "
+ "AC_online %d USB_online %d AC_CV %d USB_CV %d AC_I %d "
+ "USB_I %d AC_Vset %d AC_Iset %d USB_Vset %d USB_Iset %d\n",
+ di->batt_data.volt,
+ di->batt_data.avg_curr,
+ di->batt_data.inst_curr,
+ di->batt_data.temp,
+ di->batt_data.percent,
+ di->maintenance_chg,
+ states[di->charge_state],
+ di->chg_info.charger_type,
+ di->charge_status,
+ di->chg_info.conn_chg & AC_CHG,
+ di->chg_info.conn_chg & USB_CHG,
+ di->chg_info.online_chg & AC_CHG,
+ di->chg_info.online_chg & USB_CHG,
+ di->events.ac_cv_active,
+ di->events.usb_cv_active,
+ di->chg_info.ac_curr,
+ di->chg_info.usb_curr,
+ di->chg_info.ac_vset,
+ di->chg_info.ac_iset,
+ di->chg_info.usb_vset,
+ di->chg_info.usb_iset);
+
+ switch (di->charge_state) {
+ case STATE_HANDHELD_INIT:
+ abx500_chargalg_stop_charging(di);
+ di->charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
+ abx500_chargalg_state_to(di, STATE_HANDHELD);
+ /* Intentional fallthrough */
+
+ case STATE_HANDHELD:
+ break;
+
+ case STATE_SUSPENDED_INIT:
+ if (di->susp_status.ac_suspended)
+ abx500_chargalg_ac_en(di, false, 0, 0);
+ if (di->susp_status.usb_suspended)
+ abx500_chargalg_usb_en(di, false, 0, 0);
+ abx500_chargalg_stop_safety_timer(di);
+ abx500_chargalg_stop_maintenance_timer(di);
+ di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ di->maintenance_chg = false;
+ abx500_chargalg_state_to(di, STATE_SUSPENDED);
+ power_supply_changed(&di->chargalg_psy);
+ /* Intentional fallthrough */
+
+ case STATE_SUSPENDED:
+ /* CHARGING is suspended */
+ break;
+
+ case STATE_BATT_REMOVED_INIT:
+ abx500_chargalg_stop_charging(di);
+ abx500_chargalg_state_to(di, STATE_BATT_REMOVED);
+ /* Intentional fallthrough */
+
+ case STATE_BATT_REMOVED:
+ if (!di->events.batt_rem)
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+ break;
+
+ case STATE_HW_TEMP_PROTECT_INIT:
+ abx500_chargalg_stop_charging(di);
+ abx500_chargalg_state_to(di, STATE_HW_TEMP_PROTECT);
+ /* Intentional fallthrough */
+
+ case STATE_HW_TEMP_PROTECT:
+ if (!di->events.main_thermal_prot &&
+ !di->events.usb_thermal_prot)
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+ break;
+
+ case STATE_OVV_PROTECT_INIT:
+ abx500_chargalg_stop_charging(di);
+ abx500_chargalg_state_to(di, STATE_OVV_PROTECT);
+ /* Intentional fallthrough */
+
+ case STATE_OVV_PROTECT:
+ if (!di->events.vbus_ovv &&
+ !di->events.main_ovv &&
+ !di->events.batt_ovv &&
+ di->chg_info.usb_chg_ok &&
+ di->chg_info.ac_chg_ok)
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+ break;
+
+ case STATE_CHG_NOT_OK_INIT:
+ abx500_chargalg_stop_charging(di);
+ abx500_chargalg_state_to(di, STATE_CHG_NOT_OK);
+ /* Intentional fallthrough */
+
+ case STATE_CHG_NOT_OK:
+ if (!di->events.mainextchnotok &&
+ !di->events.usbchargernotok)
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+ break;
+
+ case STATE_SAFETY_TIMER_EXPIRED_INIT:
+ abx500_chargalg_stop_charging(di);
+ abx500_chargalg_state_to(di, STATE_SAFETY_TIMER_EXPIRED);
+ /* Intentional fallthrough */
+
+ case STATE_SAFETY_TIMER_EXPIRED:
+ /* We exit this state when charger is removed */
+ break;
+
+ case STATE_NORMAL_INIT:
+ abx500_chargalg_start_charging(di,
+ di->bat->bat_type[di->bat->batt_id].normal_vol_lvl,
+ di->bat->bat_type[di->bat->batt_id].normal_cur_lvl);
+ abx500_chargalg_state_to(di, STATE_NORMAL);
+ abx500_chargalg_start_safety_timer(di);
+ abx500_chargalg_stop_maintenance_timer(di);
+ init_maxim_chg_curr(di);
+ di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
+ di->eoc_cnt = 0;
+ di->maintenance_chg = false;
+ power_supply_changed(&di->chargalg_psy);
+
+ break;
+
+ case STATE_NORMAL:
+ handle_maxim_chg_curr(di);
+ if (di->charge_status == POWER_SUPPLY_STATUS_FULL &&
+ di->maintenance_chg) {
+ if (di->bat->no_maintenance)
+ abx500_chargalg_state_to(di,
+ STATE_WAIT_FOR_RECHARGE_INIT);
+ else
+ abx500_chargalg_state_to(di,
+ STATE_MAINTENANCE_A_INIT);
+ }
+ break;
+
+ /* This state will be used when the maintenance state is disabled */
+ case STATE_WAIT_FOR_RECHARGE_INIT:
+ abx500_chargalg_hold_charging(di);
+ abx500_chargalg_state_to(di, STATE_WAIT_FOR_RECHARGE);
+ di->rch_cnt = RCH_COND_CNT;
+ /* Intentional fallthrough */
+
+ case STATE_WAIT_FOR_RECHARGE:
+ if (di->batt_data.volt <=
+ di->bat->bat_type[di->bat->batt_id].recharge_vol) {
+ if (di->rch_cnt-- == 0)
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+ } else
+ di->rch_cnt = RCH_COND_CNT;
+ break;
+
+ case STATE_MAINTENANCE_A_INIT:
+ abx500_chargalg_stop_safety_timer(di);
+ abx500_chargalg_start_maintenance_timer(di,
+ di->bat->bat_type[
+ di->bat->batt_id].maint_a_chg_timer_h);
+ abx500_chargalg_start_charging(di,
+ di->bat->bat_type[
+ di->bat->batt_id].maint_a_vol_lvl,
+ di->bat->bat_type[
+ di->bat->batt_id].maint_a_cur_lvl);
+ abx500_chargalg_state_to(di, STATE_MAINTENANCE_A);
+ power_supply_changed(&di->chargalg_psy);
+ /* Intentional fallthrough*/
+
+ case STATE_MAINTENANCE_A:
+ if (di->events.maintenance_timer_expired) {
+ abx500_chargalg_stop_maintenance_timer(di);
+ abx500_chargalg_state_to(di, STATE_MAINTENANCE_B_INIT);
+ }
+ break;
+
+ case STATE_MAINTENANCE_B_INIT:
+ abx500_chargalg_start_maintenance_timer(di,
+ di->bat->bat_type[
+ di->bat->batt_id].maint_b_chg_timer_h);
+ abx500_chargalg_start_charging(di,
+ di->bat->bat_type[
+ di->bat->batt_id].maint_b_vol_lvl,
+ di->bat->bat_type[
+ di->bat->batt_id].maint_b_cur_lvl);
+ abx500_chargalg_state_to(di, STATE_MAINTENANCE_B);
+ power_supply_changed(&di->chargalg_psy);
+ /* Intentional fallthrough*/
+
+ case STATE_MAINTENANCE_B:
+ if (di->events.maintenance_timer_expired) {
+ abx500_chargalg_stop_maintenance_timer(di);
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+ }
+ break;
+
+ case STATE_TEMP_LOWHIGH_INIT:
+ abx500_chargalg_start_charging(di,
+ di->bat->bat_type[
+ di->bat->batt_id].low_high_vol_lvl,
+ di->bat->bat_type[
+ di->bat->batt_id].low_high_cur_lvl);
+ abx500_chargalg_stop_maintenance_timer(di);
+ di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
+ abx500_chargalg_state_to(di, STATE_TEMP_LOWHIGH);
+ power_supply_changed(&di->chargalg_psy);
+ /* Intentional fallthrough */
+
+ case STATE_TEMP_LOWHIGH:
+ if (!di->events.btemp_lowhigh)
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+ break;
+
+ case STATE_WD_EXPIRED_INIT:
+ abx500_chargalg_stop_charging(di);
+ abx500_chargalg_state_to(di, STATE_WD_EXPIRED);
+ /* Intentional fallthrough */
+
+ case STATE_WD_EXPIRED:
+ if (!di->events.ac_wd_expired &&
+ !di->events.usb_wd_expired)
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+ break;
+
+ case STATE_TEMP_UNDEROVER_INIT:
+ abx500_chargalg_stop_charging(di);
+ abx500_chargalg_state_to(di, STATE_TEMP_UNDEROVER);
+ /* Intentional fallthrough */
+
+ case STATE_TEMP_UNDEROVER:
+ if (!di->events.btemp_underover)
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+ break;
+ }
+
+ /* Start charging directly if the new state is a charge state */
+ if (di->charge_state == STATE_NORMAL_INIT ||
+ di->charge_state == STATE_MAINTENANCE_A_INIT ||
+ di->charge_state == STATE_MAINTENANCE_B_INIT)
+ queue_work(di->chargalg_wq, &di->chargalg_work);
+}
+
+/**
+ * abx500_chargalg_periodic_work() - Periodic work for the algorithm
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for the charging algorithm
+ */
+static void abx500_chargalg_periodic_work(struct work_struct *work)
+{
+ struct abx500_chargalg *di = container_of(work,
+ struct abx500_chargalg, chargalg_periodic_work.work);
+
+ abx500_chargalg_algorithm(di);
+
+ /*
+ * If a charger is connected then the battery has to be monitored
+ * frequently, else the work can be delayed.
+ */
+ if (di->chg_info.conn_chg)
+ queue_delayed_work(di->chargalg_wq,
+ &di->chargalg_periodic_work,
+ di->bat->interval_charging * HZ);
+ else
+ queue_delayed_work(di->chargalg_wq,
+ &di->chargalg_periodic_work,
+ di->bat->interval_not_charging * HZ);
+}
+
+/**
+ * abx500_chargalg_wd_work() - periodic work to kick the charger watchdog
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for kicking the charger watchdog
+ */
+static void abx500_chargalg_wd_work(struct work_struct *work)
+{
+ int ret;
+ struct abx500_chargalg *di = container_of(work,
+ struct abx500_chargalg, chargalg_wd_work.work);
+
+ dev_dbg(di->dev, "abx500_chargalg_wd_work\n");
+
+ ret = abx500_chargalg_kick_watchdog(di);
+ if (ret < 0)
+ dev_err(di->dev, "failed to kick watchdog\n");
+
+ queue_delayed_work(di->chargalg_wq,
+ &di->chargalg_wd_work, CHG_WD_INTERVAL);
+}
+
+/**
+ * abx500_chargalg_work() - Work to run the charging algorithm instantly
+ * @work: pointer to the work_struct structure
+ *
+ * Work queue function for calling the charging algorithm
+ */
+static void abx500_chargalg_work(struct work_struct *work)
+{
+ struct abx500_chargalg *di = container_of(work,
+ struct abx500_chargalg, chargalg_work);
+
+ abx500_chargalg_algorithm(di);
+}
+
+/**
+ * abx500_chargalg_get_property() - get the chargalg properties
+ * @psy: pointer to the power_supply structure
+ * @psp: pointer to the power_supply_property structure
+ * @val: pointer to the power_supply_propval union
+ *
+ * This function gets called when an application tries to get the
+ * chargalg properties by reading the sysfs files.
+ * status: charging/discharging/full/unknown
+ * health: health of the battery
+ * Returns error code in case of failure else 0 on success
+ */
+static int abx500_chargalg_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct abx500_chargalg *di;
+
+ di = to_abx500_chargalg_device_info(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = di->charge_status;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ if (di->events.batt_ovv) {
+ val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ } else if (di->events.btemp_underover) {
+ if (di->batt_data.temp <= di->bat->temp_under)
+ val->intval = POWER_SUPPLY_HEALTH_COLD;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ } else {
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/* Exposure to the sysfs interface */
+
+/**
+ * abx500_chargalg_sysfs_charger() - sysfs store operations
+ * @kobj: pointer to the struct kobject
+ * @attr: pointer to the struct attribute
+ * @buf: buffer that holds the parameter passed from userspace
+ * @length: length of the parameter passed
+ *
+ * Returns length of the buffer(input taken from user space) on success
+ * else error code on failure
+ * The operation to be performed on passing the parameters from the user space.
+ */
+static ssize_t abx500_chargalg_sysfs_charger(struct kobject *kobj,
+ struct attribute *attr, const char *buf, size_t length)
+{
+ struct abx500_chargalg *di = container_of(kobj,
+ struct abx500_chargalg, chargalg_kobject);
+ long int param;
+ int ac_usb;
+ int ret;
+ char entry = *attr->name;
+
+ switch (entry) {
+ case 'c':
+ ret = strict_strtol(buf, 10, ¶m);
+ if (ret < 0)
+ return ret;
+
+ ac_usb = param;
+ switch (ac_usb) {
+ case 0:
+ /* Disable charging */
+ di->susp_status.ac_suspended = true;
+ di->susp_status.usb_suspended = true;
+ di->susp_status.suspended_change = true;
+ /* Trigger a state change */
+ queue_work(di->chargalg_wq,
+ &di->chargalg_work);
+ break;
+ case 1:
+ /* Enable AC Charging */
+ di->susp_status.ac_suspended = false;
+ di->susp_status.suspended_change = true;
+ /* Trigger a state change */
+ queue_work(di->chargalg_wq,
+ &di->chargalg_work);
+ break;
+ case 2:
+ /* Enable USB charging */
+ di->susp_status.usb_suspended = false;
+ di->susp_status.suspended_change = true;
+ /* Trigger a state change */
+ queue_work(di->chargalg_wq,
+ &di->chargalg_work);
+ break;
+ default:
+ dev_info(di->dev, "Wrong input\n"
+ "Enter 0. Disable AC/USB Charging\n"
+ "1. Enable AC charging\n"
+ "2. Enable USB Charging\n");
+ };
+ break;
+ };
+ return strlen(buf);
+}
+
+static struct attribute abx500_chargalg_en_charger = \
+{
+ .name = "chargalg",
+ .mode = S_IWUSR,
+};
+
+static struct attribute *abx500_chargalg_chg[] = {
+ &abx500_chargalg_en_charger,
+ NULL
+};
+
+static const struct sysfs_ops abx500_chargalg_sysfs_ops = {
+ .store = abx500_chargalg_sysfs_charger,
+};
+
+static struct kobj_type abx500_chargalg_ktype = {
+ .sysfs_ops = &abx500_chargalg_sysfs_ops,
+ .default_attrs = abx500_chargalg_chg,
+};
+
+/**
+ * abx500_chargalg_sysfs_exit() - de-init of sysfs entry
+ * @di: pointer to the struct abx500_chargalg
+ *
+ * This function removes the entry in sysfs.
+ */
+static void abx500_chargalg_sysfs_exit(struct abx500_chargalg *di)
+{
+ kobject_del(&di->chargalg_kobject);
+}
+
+/**
+ * abx500_chargalg_sysfs_init() - init of sysfs entry
+ * @di: pointer to the struct abx500_chargalg
+ *
+ * This function adds an entry in sysfs.
+ * Returns error code in case of failure else 0(on success)
+ */
+static int abx500_chargalg_sysfs_init(struct abx500_chargalg *di)
+{
+ int ret = 0;
+
+ ret = kobject_init_and_add(&di->chargalg_kobject,
+ &abx500_chargalg_ktype,
+ NULL, "abx500_chargalg");
+ if (ret < 0)
+ dev_err(di->dev, "failed to create sysfs entry\n");
+
+ return ret;
+}
+/* Exposure to the sysfs interface <<END>> */
+
+#if defined(CONFIG_PM)
+static int abx500_chargalg_resume(struct platform_device *pdev)
+{
+ struct abx500_chargalg *di = platform_get_drvdata(pdev);
+
+ /* Kick charger watchdog if charging (any charger online) */
+ if (di->chg_info.online_chg)
+ queue_delayed_work(di->chargalg_wq, &di->chargalg_wd_work, 0);
+
+ /*
+ * Run the charging algorithm directly to be sure we don't
+ * do it too seldom
+ */
+ queue_delayed_work(di->chargalg_wq, &di->chargalg_periodic_work, 0);
+
+ return 0;
+}
+
+static int abx500_chargalg_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct abx500_chargalg *di = platform_get_drvdata(pdev);
+
+ if (di->chg_info.online_chg)
+ cancel_delayed_work_sync(&di->chargalg_wd_work);
+
+ cancel_delayed_work_sync(&di->chargalg_periodic_work);
+
+ return 0;
+}
+#else
+#define abx500_chargalg_suspend NULL
+#define abx500_chargalg_resume NULL
+#endif
+
+static int __devexit abx500_chargalg_remove(struct platform_device *pdev)
+{
+ struct abx500_chargalg *di = platform_get_drvdata(pdev);
+
+ /* sysfs interface to enable/disbale charging from user space */
+ abx500_chargalg_sysfs_exit(di);
+
+ /* Delete the work queue */
+ destroy_workqueue(di->chargalg_wq);
+
+ flush_scheduled_work();
+ power_supply_unregister(&di->chargalg_psy);
+ platform_set_drvdata(pdev, NULL);
+ kfree(di);
+
+ return 0;
+}
+
+static int __devinit abx500_chargalg_probe(struct platform_device *pdev)
+{
+ struct abx500_bm_plat_data *plat_data;
+ int ret = 0;
+
+ struct abx500_chargalg *di =
+ kzalloc(sizeof(struct abx500_chargalg), GFP_KERNEL);
+ if (!di)
+ return -ENOMEM;
+
+ /* get device struct */
+ di->dev = &pdev->dev;
+
+ plat_data = pdev->dev.platform_data;
+ di->pdata = plat_data->chargalg;
+ di->bat = plat_data->battery;
+
+ /* chargalg supply */
+ di->chargalg_psy.name = "abx500_chargalg";
+ di->chargalg_psy.type = POWER_SUPPLY_TYPE_BATTERY;
+ di->chargalg_psy.properties = abx500_chargalg_props;
+ di->chargalg_psy.num_properties = ARRAY_SIZE(abx500_chargalg_props);
+ di->chargalg_psy.get_property = abx500_chargalg_get_property;
+ di->chargalg_psy.supplied_to = di->pdata->supplied_to;
+ di->chargalg_psy.num_supplicants = di->pdata->num_supplicants;
+ di->chargalg_psy.external_power_changed =
+ abx500_chargalg_external_power_changed;
+
+ /* Initilialize safety timer */
+ init_timer(&di->safety_timer);
+ di->safety_timer.function = abx500_chargalg_safety_timer_expired;
+ di->safety_timer.data = (unsigned long) di;
+
+ /* Initilialize maintenance timer */
+ init_timer(&di->maintenance_timer);
+ di->maintenance_timer.function =
+ abx500_chargalg_maintenance_timer_expired;
+ di->maintenance_timer.data = (unsigned long) di;
+
+ /* Create a work queue for the chargalg */
+ di->chargalg_wq =
+ create_singlethread_workqueue("abx500_chargalg_wq");
+ if (di->chargalg_wq == NULL) {
+ dev_err(di->dev, "failed to create work queue\n");
+ goto free_device_info;
+ }
+
+ /* Init work for chargalg */
+ INIT_DELAYED_WORK_DEFERRABLE(&di->chargalg_periodic_work,
+ abx500_chargalg_periodic_work);
+ INIT_DELAYED_WORK_DEFERRABLE(&di->chargalg_wd_work,
+ abx500_chargalg_wd_work);
+
+ /* Init work for chargalg */
+ INIT_WORK(&di->chargalg_work, abx500_chargalg_work);
+
+ /* To detect charger at startup */
+ di->chg_info.prev_conn_chg = -1;
+
+ /* Register chargalg power supply class */
+ ret = power_supply_register(di->dev, &di->chargalg_psy);
+ if (ret) {
+ dev_err(di->dev, "failed to register chargalg psy\n");
+ goto free_chargalg_wq;
+ }
+
+ platform_set_drvdata(pdev, di);
+
+ /* sysfs interface to enable/disable charging from user space */
+ ret = abx500_chargalg_sysfs_init(di);
+ if (ret) {
+ dev_err(di->dev, "failed to create sysfs entry\n");
+ goto free_psy;
+ }
+
+ /* Run the charging algorithm */
+ queue_delayed_work(di->chargalg_wq, &di->chargalg_periodic_work, 0);
+
+ dev_info(di->dev, "probe success\n");
+ return ret;
+
+free_psy:
+ power_supply_unregister(&di->chargalg_psy);
+free_chargalg_wq:
+ destroy_workqueue(di->chargalg_wq);
+free_device_info:
+ kfree(di);
+
+ return ret;
+}
+
+static struct platform_driver abx500_chargalg_driver = {
+ .probe = abx500_chargalg_probe,
+ .remove = __devexit_p(abx500_chargalg_remove),
+ .suspend = abx500_chargalg_suspend,
+ .resume = abx500_chargalg_resume,
+ .driver = {
+ .name = "abx500-chargalg",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init abx500_chargalg_init(void)
+{
+ return platform_driver_register(&abx500_chargalg_driver);
+}
+
+static void __exit abx500_chargalg_exit(void)
+{
+ platform_driver_unregister(&abx500_chargalg_driver);
+}
+
+module_init(abx500_chargalg_init);
+module_exit(abx500_chargalg_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Johan Palsson, Karl Komierowski");
+MODULE_ALIAS("platform:abx500-chargalg");
+MODULE_DESCRIPTION("abx500 battery charging algorithm");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/apm_power.c b/ap/os/linux/linux-3.4.x/drivers/power/apm_power.c
new file mode 100644
index 0000000..3976301
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/apm_power.c
@@ -0,0 +1,376 @@
+/*
+ * Copyright © 2007 Anton Vorontsov <cbou@mail.ru>
+ * Copyright © 2007 Eugeny Boger <eugenyboger@dgap.mipt.ru>
+ *
+ * Author: Eugeny Boger <eugenyboger@dgap.mipt.ru>
+ *
+ * Use consistent with the GNU GPL is permitted,
+ * provided that this copyright notice is
+ * preserved in its entirety in all copies and derived works.
+ */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/power_supply.h>
+#include <linux/apm-emulation.h>
+
+
+#define PSY_PROP(psy, prop, val) (psy->get_property(psy, \
+ POWER_SUPPLY_PROP_##prop, val))
+
+#define _MPSY_PROP(prop, val) (main_battery->get_property(main_battery, \
+ prop, val))
+
+#define MPSY_PROP(prop, val) _MPSY_PROP(POWER_SUPPLY_PROP_##prop, val)
+
+static DEFINE_MUTEX(apm_mutex);
+static struct power_supply *main_battery;
+
+enum apm_source {
+ SOURCE_ENERGY,
+ SOURCE_CHARGE,
+ SOURCE_VOLTAGE,
+};
+
+struct find_bat_param {
+ struct power_supply *main;
+ struct power_supply *bat;
+ struct power_supply *max_charge_bat;
+ struct power_supply *max_energy_bat;
+ union power_supply_propval full;
+ int max_charge;
+ int max_energy;
+};
+
+static int __find_main_battery(struct device *dev, void *data)
+{
+ struct find_bat_param *bp = (struct find_bat_param *)data;
+
+ bp->bat = dev_get_drvdata(dev);
+
+ if (bp->bat->use_for_apm) {
+ /* nice, we explicitly asked to report this battery. */
+ bp->main = bp->bat;
+ return 1;
+ }
+
+ if (!PSY_PROP(bp->bat, CHARGE_FULL_DESIGN, &bp->full) ||
+ !PSY_PROP(bp->bat, CHARGE_FULL, &bp->full)) {
+ if (bp->full.intval > bp->max_charge) {
+ bp->max_charge_bat = bp->bat;
+ bp->max_charge = bp->full.intval;
+ }
+ } else if (!PSY_PROP(bp->bat, ENERGY_FULL_DESIGN, &bp->full) ||
+ !PSY_PROP(bp->bat, ENERGY_FULL, &bp->full)) {
+ if (bp->full.intval > bp->max_energy) {
+ bp->max_energy_bat = bp->bat;
+ bp->max_energy = bp->full.intval;
+ }
+ }
+ return 0;
+}
+
+static void find_main_battery(void)
+{
+ struct find_bat_param bp;
+ int error;
+
+ memset(&bp, 0, sizeof(struct find_bat_param));
+ main_battery = NULL;
+ bp.main = main_battery;
+
+ error = class_for_each_device(power_supply_class, NULL, &bp,
+ __find_main_battery);
+ if (error) {
+ main_battery = bp.main;
+ return;
+ }
+
+ if ((bp.max_energy_bat && bp.max_charge_bat) &&
+ (bp.max_energy_bat != bp.max_charge_bat)) {
+ /* try guess battery with more capacity */
+ if (!PSY_PROP(bp.max_charge_bat, VOLTAGE_MAX_DESIGN,
+ &bp.full)) {
+ if (bp.max_energy > bp.max_charge * bp.full.intval)
+ main_battery = bp.max_energy_bat;
+ else
+ main_battery = bp.max_charge_bat;
+ } else if (!PSY_PROP(bp.max_energy_bat, VOLTAGE_MAX_DESIGN,
+ &bp.full)) {
+ if (bp.max_charge > bp.max_energy / bp.full.intval)
+ main_battery = bp.max_charge_bat;
+ else
+ main_battery = bp.max_energy_bat;
+ } else {
+ /* give up, choice any */
+ main_battery = bp.max_energy_bat;
+ }
+ } else if (bp.max_charge_bat) {
+ main_battery = bp.max_charge_bat;
+ } else if (bp.max_energy_bat) {
+ main_battery = bp.max_energy_bat;
+ } else {
+ /* give up, try the last if any */
+ main_battery = bp.bat;
+ }
+}
+
+static int do_calculate_time(int status, enum apm_source source)
+{
+ union power_supply_propval full;
+ union power_supply_propval empty;
+ union power_supply_propval cur;
+ union power_supply_propval I;
+ enum power_supply_property full_prop;
+ enum power_supply_property full_design_prop;
+ enum power_supply_property empty_prop;
+ enum power_supply_property empty_design_prop;
+ enum power_supply_property cur_avg_prop;
+ enum power_supply_property cur_now_prop;
+
+ if (MPSY_PROP(CURRENT_AVG, &I)) {
+ /* if battery can't report average value, use momentary */
+ if (MPSY_PROP(CURRENT_NOW, &I))
+ return -1;
+ }
+
+ if (!I.intval)
+ return 0;
+
+ switch (source) {
+ case SOURCE_CHARGE:
+ full_prop = POWER_SUPPLY_PROP_CHARGE_FULL;
+ full_design_prop = POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN;
+ empty_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
+ empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
+ cur_avg_prop = POWER_SUPPLY_PROP_CHARGE_AVG;
+ cur_now_prop = POWER_SUPPLY_PROP_CHARGE_NOW;
+ break;
+ case SOURCE_ENERGY:
+ full_prop = POWER_SUPPLY_PROP_ENERGY_FULL;
+ full_design_prop = POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN;
+ empty_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY;
+ empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
+ cur_avg_prop = POWER_SUPPLY_PROP_ENERGY_AVG;
+ cur_now_prop = POWER_SUPPLY_PROP_ENERGY_NOW;
+ break;
+ case SOURCE_VOLTAGE:
+ full_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX;
+ full_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN;
+ empty_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN;
+ empty_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN;
+ cur_avg_prop = POWER_SUPPLY_PROP_VOLTAGE_AVG;
+ cur_now_prop = POWER_SUPPLY_PROP_VOLTAGE_NOW;
+ break;
+ default:
+ printk(KERN_ERR "Unsupported source: %d\n", source);
+ return -1;
+ }
+
+ if (_MPSY_PROP(full_prop, &full)) {
+ /* if battery can't report this property, use design value */
+ if (_MPSY_PROP(full_design_prop, &full))
+ return -1;
+ }
+
+ if (_MPSY_PROP(empty_prop, &empty)) {
+ /* if battery can't report this property, use design value */
+ if (_MPSY_PROP(empty_design_prop, &empty))
+ empty.intval = 0;
+ }
+
+ if (_MPSY_PROP(cur_avg_prop, &cur)) {
+ /* if battery can't report average value, use momentary */
+ if (_MPSY_PROP(cur_now_prop, &cur))
+ return -1;
+ }
+
+ if (status == POWER_SUPPLY_STATUS_CHARGING)
+ return ((cur.intval - full.intval) * 60L) / I.intval;
+ else
+ return -((cur.intval - empty.intval) * 60L) / I.intval;
+}
+
+static int calculate_time(int status)
+{
+ int time;
+
+ time = do_calculate_time(status, SOURCE_ENERGY);
+ if (time != -1)
+ return time;
+
+ time = do_calculate_time(status, SOURCE_CHARGE);
+ if (time != -1)
+ return time;
+
+ time = do_calculate_time(status, SOURCE_VOLTAGE);
+ if (time != -1)
+ return time;
+
+ return -1;
+}
+
+static int calculate_capacity(enum apm_source source)
+{
+ enum power_supply_property full_prop, empty_prop;
+ enum power_supply_property full_design_prop, empty_design_prop;
+ enum power_supply_property now_prop, avg_prop;
+ union power_supply_propval empty, full, cur;
+ int ret;
+
+ switch (source) {
+ case SOURCE_CHARGE:
+ full_prop = POWER_SUPPLY_PROP_CHARGE_FULL;
+ empty_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
+ full_design_prop = POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN;
+ empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN;
+ now_prop = POWER_SUPPLY_PROP_CHARGE_NOW;
+ avg_prop = POWER_SUPPLY_PROP_CHARGE_AVG;
+ break;
+ case SOURCE_ENERGY:
+ full_prop = POWER_SUPPLY_PROP_ENERGY_FULL;
+ empty_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY;
+ full_design_prop = POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN;
+ empty_design_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN;
+ now_prop = POWER_SUPPLY_PROP_ENERGY_NOW;
+ avg_prop = POWER_SUPPLY_PROP_ENERGY_AVG;
+ break;
+ case SOURCE_VOLTAGE:
+ full_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX;
+ empty_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN;
+ full_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN;
+ empty_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN;
+ now_prop = POWER_SUPPLY_PROP_VOLTAGE_NOW;
+ avg_prop = POWER_SUPPLY_PROP_VOLTAGE_AVG;
+ break;
+ default:
+ printk(KERN_ERR "Unsupported source: %d\n", source);
+ return -1;
+ }
+
+ if (_MPSY_PROP(full_prop, &full)) {
+ /* if battery can't report this property, use design value */
+ if (_MPSY_PROP(full_design_prop, &full))
+ return -1;
+ }
+
+ if (_MPSY_PROP(avg_prop, &cur)) {
+ /* if battery can't report average value, use momentary */
+ if (_MPSY_PROP(now_prop, &cur))
+ return -1;
+ }
+
+ if (_MPSY_PROP(empty_prop, &empty)) {
+ /* if battery can't report this property, use design value */
+ if (_MPSY_PROP(empty_design_prop, &empty))
+ empty.intval = 0;
+ }
+
+ if (full.intval - empty.intval)
+ ret = ((cur.intval - empty.intval) * 100L) /
+ (full.intval - empty.intval);
+ else
+ return -1;
+
+ if (ret > 100)
+ return 100;
+ else if (ret < 0)
+ return 0;
+
+ return ret;
+}
+
+static void apm_battery_apm_get_power_status(struct apm_power_info *info)
+{
+ union power_supply_propval status;
+ union power_supply_propval capacity, time_to_full, time_to_empty;
+
+ mutex_lock(&apm_mutex);
+ find_main_battery();
+ if (!main_battery) {
+ mutex_unlock(&apm_mutex);
+ return;
+ }
+
+ /* status */
+
+ if (MPSY_PROP(STATUS, &status))
+ status.intval = POWER_SUPPLY_STATUS_UNKNOWN;
+
+ /* ac line status */
+
+ if ((status.intval == POWER_SUPPLY_STATUS_CHARGING) ||
+ (status.intval == POWER_SUPPLY_STATUS_NOT_CHARGING) ||
+ (status.intval == POWER_SUPPLY_STATUS_FULL))
+ info->ac_line_status = APM_AC_ONLINE;
+ else
+ info->ac_line_status = APM_AC_OFFLINE;
+
+ /* battery life (i.e. capacity, in percents) */
+
+ if (MPSY_PROP(CAPACITY, &capacity) == 0) {
+ info->battery_life = capacity.intval;
+ } else {
+ /* try calculate using energy */
+ info->battery_life = calculate_capacity(SOURCE_ENERGY);
+ /* if failed try calculate using charge instead */
+ if (info->battery_life == -1)
+ info->battery_life = calculate_capacity(SOURCE_CHARGE);
+ if (info->battery_life == -1)
+ info->battery_life = calculate_capacity(SOURCE_VOLTAGE);
+ }
+
+ /* charging status */
+
+ if (status.intval == POWER_SUPPLY_STATUS_CHARGING) {
+ info->battery_status = APM_BATTERY_STATUS_CHARGING;
+ } else {
+ if (info->battery_life > 50)
+ info->battery_status = APM_BATTERY_STATUS_HIGH;
+ else if (info->battery_life > 5)
+ info->battery_status = APM_BATTERY_STATUS_LOW;
+ else
+ info->battery_status = APM_BATTERY_STATUS_CRITICAL;
+ }
+ info->battery_flag = info->battery_status;
+
+ /* time */
+
+ info->units = APM_UNITS_MINS;
+
+ if (status.intval == POWER_SUPPLY_STATUS_CHARGING) {
+ if (!MPSY_PROP(TIME_TO_FULL_AVG, &time_to_full) ||
+ !MPSY_PROP(TIME_TO_FULL_NOW, &time_to_full))
+ info->time = time_to_full.intval / 60;
+ else
+ info->time = calculate_time(status.intval);
+ } else {
+ if (!MPSY_PROP(TIME_TO_EMPTY_AVG, &time_to_empty) ||
+ !MPSY_PROP(TIME_TO_EMPTY_NOW, &time_to_empty))
+ info->time = time_to_empty.intval / 60;
+ else
+ info->time = calculate_time(status.intval);
+ }
+
+ mutex_unlock(&apm_mutex);
+}
+
+static int __init apm_battery_init(void)
+{
+ printk(KERN_INFO "APM Battery Driver\n");
+
+ apm_get_power_status = apm_battery_apm_get_power_status;
+ return 0;
+}
+
+static void __exit apm_battery_exit(void)
+{
+ apm_get_power_status = NULL;
+}
+
+module_init(apm_battery_init);
+module_exit(apm_battery_exit);
+
+MODULE_AUTHOR("Eugeny Boger <eugenyboger@dgap.mipt.ru>");
+MODULE_DESCRIPTION("APM emulation driver for battery monitoring class");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/aw3215_charger.c b/ap/os/linux/linux-3.4.x/drivers/power/aw3215_charger.c
new file mode 100644
index 0000000..5568eb4
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/aw3215_charger.c
@@ -0,0 +1,1218 @@
+/*
+ * Driver for the TI zx234502 battery charger.
+ *
+ * Author: Mark A. Greer <mgreer@animalcreek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/of_irq.h>
+#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/power_supply.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/kthread.h>
+//#include <linux/mutex.h>
+#include <linux/semaphore.h>
+
+#include <linux/power/aw3215_charger.h>
+#include <linux/mfd/zx234290.h>
+
+#include <mach/gpio.h>
+#include <mach/pcu.h>
+#include <mach/zx29_usb.h>
+#include <linux/workqueue.h>
+
+#include <linux/slab.h>
+#include <linux/debugfs.h>
+#include <asm/uaccess.h>
+#include <linux/wakelock.h>
+
+#define CHG_DEBUG
+#ifdef CHG_DEBUG
+#define GIC_DIST_ENABLE_SET 0x100
+#define GIC_DIST_PENDING_SET 0x200
+extern void __iomem *base_testtt;
+#endif
+
+static volatile int s_chg_chin_cnt = 0;
+static volatile int s_chg_chstate_cnt = 0;
+
+
+#define USB_IN GPIO_LOW
+#define USB_OUT GPIO_HIGH
+#define CHG_START GPIO_LOW
+#define CHG_STOP GPIO_HIGH
+#ifdef _USE_V3PHONE_TYPE_XRSD_
+#define CHG_EN_TYPE GPIO_HIGH
+#define CHG_DISEN_TYPE GPIO_LOW
+#else
+#define CHG_EN_TYPE GPIO_LOW
+#define CHG_DISEN_TYPE GPIO_HIGH
+#endif
+
+//*when the bat voltage <3.2V usb will not enum ,then the sys fall in lowpower*/
+#define USB_ENUM_MIN 3400
+
+/*
+ * The FAULT register is latched by the zx234502 (except for NTC_FAULT)
+ * so the first read after a fault returns the latched value and subsequent
+ * reads return the current value. In order to return the fault status
+ * to the user, have the interrupt handler save the reg's value and retrieve
+ * it in the appropriate health/status routine. Each routine has its own
+ * flag indicating whether it should use the value stored by the last run
+ * of the interrupt handler or do an actual reg read. That way each routine
+ * can report back whatever fault may have occured.
+ */
+ enum chg_stop_reason{
+ CHG_STOP_REASON_NO = 0,
+ CHG_STOP_REASON_TEMP= 1,
+ CHG_STOP_REASON_FULL = 2,
+ CHG_STOP_DEFALT= 0xff
+};
+struct aw3215_dev_info {
+ struct device *dev;
+ struct power_supply charger;
+ struct power_supply battery;
+
+ kernel_ulong_t model;
+ unsigned int chgin_irq;
+ unsigned int chgstate_irq;
+ //struct task_struct *chgin_irq_thread;
+ struct task_struct *chgstate_irq_thread;
+
+ u8 watchdog;
+
+ struct aw3215_platform_data *pdata;
+ unsigned int chgin_type;
+ unsigned int chgstate_type;
+ bool chg_en;
+ unsigned int chg_state;
+ //struct semaphore chgin_sem;
+ struct semaphore chgstate_sem;
+ enum chg_stop_reason stopchg_flag;
+ struct timer_list changed_timer;
+ struct wake_lock wlock_chgfull;
+
+};
+
+struct aw3215_dev_info *g_bdi = NULL;
+
+/* Charger power supply property routines */
+
+static int aw3215_charger_get_charge_type(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = bdi->charger.type;
+ return 0;
+}
+
+static int aw3215_charger_get_status(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+#if 1
+ val->intval = bdi->chg_state;
+#else
+ if(false==bdi->chg_en){
+ val->intval=POWER_SUPPLY_STATUS_NOT_CHARGING;/*diaable chg*/
+ return 0;
+ }
+ if (USB_IN==bdi->chgin_type) {
+ if(CHG_STOP==bdi->chgstate_type)
+ val->intval= POWER_SUPPLY_STATUS_FULL;
+ else if (CHG_START==bdi->chgstate_type)
+ val->intval= POWER_SUPPLY_STATUS_CHARGING;
+ else
+ val->intval=POWER_SUPPLY_STATUS_NOT_CHARGING;/*diaable chg*/
+ } else {
+ val->intval=POWER_SUPPLY_STATUS_DISCHARGING;/*usb not insert*/
+ }
+#endif
+ return 0;
+}
+
+static int aw3215_charger_get_health(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+
+ return 0;
+}
+
+int aw3215_charger_get_online(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ if (USB_IN==bdi->chgin_type) {
+ val->intval= 1;
+ } else {
+ val->intval=0;/*usb not insert*/
+ }
+
+ return 0;
+}EXPORT_SYMBOL (aw3215_charger_get_online);
+
+
+static int aw3215_charger_get_charger_enabled(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = bdi->chg_en;
+
+ return 0;
+}
+static int aw3215_charger_get_voltage_max(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = 4200;
+
+ return 0;
+}
+
+static int aw3215_charger_set_voltage(struct aw3215_dev_info *bdi,const union power_supply_propval *val)
+{
+ return 0;
+}
+static int aw3215_charger_set_charger_config(struct aw3215_dev_info *bdi,const union power_supply_propval *val)
+{
+ int ret = 0;
+ int gpio_state = 0;
+
+ if (val->intval==1) {
+ if (bdi->chg_en)
+ return 0;
+ gpio_state = CHG_EN_TYPE ;/*gpio low en chg*/
+ printk("mmi start chg\n");
+ } else {
+ if (!bdi->chg_en)
+ return 0;
+ gpio_state = CHG_DISEN_TYPE ;/*gpio high stop chg*/
+ printk("mmi stop chg\n");
+ }
+
+ disable_irq(bdi->chgstate_irq);
+
+ if (gpio_state == CHG_EN_TYPE) {
+ bdi->chg_en = true; /*(~gpio_state)*/
+ bdi->chgstate_type = CHG_START;
+ bdi->stopchg_flag = CHG_STOP_REASON_NO;
+ gpio_set_value(bdi->pdata->gpio_chgen, gpio_state);
+
+ if (bdi->chgin_type == USB_IN) {
+ bdi->chg_state = POWER_SUPPLY_STATUS_CHARGING;
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_HIGH);
+ /* start charging in 5.3ms after enable */
+ if (gpio_get_value(bdi->pdata->gpio_chgstate))
+ mdelay(40);
+ if (gpio_get_value(bdi->pdata->gpio_chgstate)){
+ printk(KERN_INFO "chg still not chargin\n"); /* should not go here */
+ bdi->chg_state = POWER_SUPPLY_STATUS_FULL;
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_LOW);
+ }
+
+ }
+ } else {
+ bdi->chg_en = false;
+ bdi->chgstate_type = CHG_STOP;
+ bdi->stopchg_flag = CHG_STOP_REASON_TEMP;
+ if (2==val->intval){/*chg full stop*/
+ bdi->stopchg_flag = CHG_STOP_REASON_FULL;
+ bdi->chg_state = POWER_SUPPLY_STATUS_FULL;
+ printk("mmi full stop chg\n");
+
+ }
+ else if (bdi->chgin_type == USB_IN)
+ bdi->chg_state = POWER_SUPPLY_STATUS_NOT_CHARGING;
+
+ gpio_set_value(bdi->pdata->gpio_chgen, gpio_state);
+ /* charger state changes from 0 to 1 in 0.12ms */
+ if (!gpio_get_value(bdi->pdata->gpio_chgstate))
+ udelay(500);
+
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_LOW);
+
+ }
+
+ enable_irq(bdi->chgstate_irq);
+#ifdef CHG_DEBUG
+ printk("irq1 chg_in= %d,chg_state_cnt= %d\n",s_chg_chstate_cnt,s_chg_chin_cnt);
+ printk("chg int enable reg1 =0x%x:\n", zx_read_reg(base_testtt + GIC_DIST_ENABLE_SET+0x4));
+ printk("chg int enable reg2 =0x%x:\n", zx_read_reg(base_testtt + GIC_DIST_ENABLE_SET+0x8));
+ printk("chg int pending reg1 =0x%x:\n", zx_read_reg(base_testtt + GIC_DIST_PENDING_SET+0x4));
+ printk("chg int pending reg2 =0x%x:\n", zx_read_reg(base_testtt + GIC_DIST_PENDING_SET+0x8));
+ printk("irq2 chg_in= %d,chg_state_cnt= %d\n",s_chg_chstate_cnt,s_chg_chin_cnt);
+#endif
+
+ power_supply_changed(&bdi->charger);
+
+ return ret;
+}
+
+
+static int aw3215_charger_get_property(struct power_supply *psy,enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct aw3215_dev_info *bdi = container_of(psy, struct aw3215_dev_info, charger);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PC1_AC2:
+ ret = aw3215_charger_get_charge_type(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = aw3215_charger_get_status(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = aw3215_charger_get_health(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = aw3215_charger_get_online(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ ret = aw3215_charger_get_voltage_max(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = aw3215_charger_get_charger_enabled(bdi, val);
+ break;
+ default:
+ ret = -ENODATA;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int aw3215_charger_set_property(struct power_supply *psy,enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct aw3215_dev_info *bdi =
+ container_of(psy, struct aw3215_dev_info, charger);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+#if 0
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = zx234502_charger_set_current(bdi, val);
+ break;
+#endif
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ ret = aw3215_charger_set_voltage(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = aw3215_charger_set_charger_config(bdi, val);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int aw3215_charger_property_is_writeable(struct power_supply *psy,enum power_supply_property psp)
+{
+ int ret;
+
+ switch (psp)
+ {
+ //case POWER_SUPPLY_PROP_CURRENT_NOW:
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = 1;
+ break;
+ default:
+ ret = 0;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property aw3215_charger_properties[] = {
+ POWER_SUPPLY_PROP_PC1_AC2,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_ONLINE,
+ //POWER_SUPPLY_PROP_CURRENT_NOW,
+ //POWER_SUPPLY_PROP_CURRENT_MAX,
+ //POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_CHARGE_ENABLED,
+};
+
+static char *aw3215_charger_supplied_to[] = {
+ "main-battery",
+};
+
+static void aw3215_charger_init(struct power_supply *charger)
+{
+ charger->name = "charger";
+ charger->type = POWER_SUPPLY_PCAC_UNKNOWN;
+ charger->properties = aw3215_charger_properties;
+ charger->num_properties = ARRAY_SIZE(aw3215_charger_properties);
+ charger->supplied_to = aw3215_charger_supplied_to;
+ //charger->num_supplies = ARRAY_SIZE(aw3215_charger_supplied_to);
+ charger->get_property = aw3215_charger_get_property;
+ charger->set_property = aw3215_charger_set_property;
+ charger->property_is_writeable = aw3215_charger_property_is_writeable;
+}
+
+/* Battery power supply property routines */
+
+static int aw3215_battery_get_health(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+
+ return 0;
+}
+
+static int aw3215_battery_get_online(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = 1;/*bat on*/
+
+ return 0;
+}
+
+static int aw3215_battery_set_online(struct aw3215_dev_info *bdi,const union power_supply_propval *val)
+{
+ return 0;
+}
+
+
+static int aw3215_battery_get_property(struct power_supply *psy,enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct aw3215_dev_info *bdi =
+ container_of(psy, struct aw3215_dev_info, battery);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = aw3215_battery_get_health(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = aw3215_battery_get_online(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = get_adc2_voltage();
+ ret = 0;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ //#ifdef CONFIG_ZX234290_ADC
+ val->intval = get_adc1_voltage() - 15;
+ ret = 0;
+ break;
+ default:
+ ret = -ENODATA;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int aw3215_battery_set_property(struct power_supply *psy,enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct aw3215_dev_info *bdi =
+ container_of(psy, struct aw3215_dev_info, battery);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_put_sync(bdi->dev);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = aw3215_battery_set_online(bdi, val);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int aw3215_battery_property_is_writeable(struct power_supply *psy,enum power_supply_property psp)
+{
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = 1;
+ break;
+ default:
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property aw3215_battery_properties[] = {
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ //POWER_SUPPLY_PROP_CAPACITY,
+};
+
+static void aw3215_battery_init(struct power_supply *battery)
+{
+ battery->name = "battery";
+ battery->type = POWER_SUPPLY_PCAC_UNKNOWN;
+ battery->properties = aw3215_battery_properties;
+ battery->num_properties = ARRAY_SIZE(aw3215_battery_properties);
+ battery->get_property = aw3215_battery_get_property;
+ battery->set_property = aw3215_battery_set_property;
+ battery->property_is_writeable = aw3215_battery_property_is_writeable;
+}
+
+#if 1
+static irqreturn_t aw3215_charger_in_irq_primary_handler(int irq, struct aw3215_dev_info * bdi)
+{
+ s_chg_chin_cnt++;
+ disable_irq_nosync(irq);
+ //pcu_int_clear(irq);
+ pcu_clr_irq_pending(irq);
+ up(&bdi->chgstate_sem);
+ //up(&bdi->chgin_sem);
+ return IRQ_HANDLED;
+}
+static irqreturn_t aw3215_charger_state_irq_primary_handler(int irq, struct aw3215_dev_info * bdi)
+{
+ s_chg_chstate_cnt++;
+ disable_irq_nosync(irq);
+ //pcu_int_clear(irq);
+ pcu_clr_irq_pending(irq);
+ up(&bdi->chgstate_sem);
+
+ return IRQ_HANDLED;
+}
+
+#endif
+#if 1
+static irqreturn_t aw3215_chg_irq_handler_thread(void *data)
+{
+ struct aw3215_dev_info *bdi = data;
+ struct aw3215_platform_data *pdata = bdi->pdata;
+ //unsigned int state_rcd = bdi->chg_state;
+ int g_gpio_state=CHG_STOP;
+ int g_gpio_in =USB_IN;
+ bool chg_changed_flag = false;
+
+ struct sched_param param = { .sched_priority = 2 };
+ param.sched_priority= 31;
+ sched_setscheduler(current, SCHED_FIFO, ¶m);
+
+ while(1)
+ {
+ down(&bdi->chgstate_sem);
+ g_gpio_in = gpio_get_value(pdata->gpio_chgin);
+ g_gpio_state = gpio_get_value(pdata->gpio_chgstate);
+ if(bdi->chgin_type!=g_gpio_in){
+
+ bdi->chgin_type = g_gpio_in;
+ if(g_gpio_in == USB_IN){
+ irq_set_irq_type(bdi->chgin_irq, IRQ_TYPE_LEVEL_HIGH);
+ printk("chg usb in\n");
+ dwc_otg_chg_inform(0);/*usb in*/
+ if(CHG_START == g_gpio_state){
+ bdi->chg_state = POWER_SUPPLY_STATUS_CHARGING;
+ printk("chg charging\n");
+ }
+ else if(bdi->stopchg_flag == CHG_STOP_REASON_TEMP){
+ bdi->chg_state = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ printk("chg temp abnormal\n");
+ }
+ else{
+ bdi->chg_state = POWER_SUPPLY_STATUS_FULL;
+ printk("chg full\n");
+ }
+ }
+ else{/*usb out*/
+ bdi->chg_state = POWER_SUPPLY_STATUS_DISCHARGING;
+ printk("chg usb out\n");
+ irq_set_irq_type(bdi->chgin_irq, IRQ_TYPE_LEVEL_LOW);
+ dwc_otg_chg_inform(1);/*usb out*/
+
+ }
+ chg_changed_flag = true;
+ s_chg_chin_cnt--;
+ enable_irq(bdi->chgin_irq);
+ }
+ else if(bdi->chgstate_type!=g_gpio_state){
+
+ bdi->chgstate_type=g_gpio_state;
+ if (CHG_START == g_gpio_state){
+ printk("chg state charging\n");
+ bdi->chg_state=POWER_SUPPLY_STATUS_CHARGING;
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_HIGH);
+ chg_changed_flag = true;
+ }
+ else {
+ if( bdi->chgin_type == USB_IN){
+ printk("chg state maybe full\n");
+ bdi->chg_state=POWER_SUPPLY_STATUS_FULL;
+ wake_lock(&(bdi->wlock_chgfull));
+ mod_timer(&bdi->changed_timer, jiffies + msecs_to_jiffies(500));
+ }
+ else{
+ printk("chg state dischargeing\n");
+ bdi->chg_state=POWER_SUPPLY_STATUS_DISCHARGING;
+ chg_changed_flag = true;
+ }
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_LOW);
+ }
+
+ s_chg_chstate_cnt--;
+ enable_irq(bdi->chgstate_irq);
+ }
+ else{
+ printk("chg int maybe handled,in=%d,state = %d\n",s_chg_chin_cnt,s_chg_chstate_cnt);
+ if(s_chg_chstate_cnt){
+ s_chg_chstate_cnt--;
+ enable_irq(bdi->chgstate_irq);
+ }
+ if(s_chg_chin_cnt){
+ s_chg_chin_cnt--;
+ enable_irq(bdi->chgin_irq);
+ }
+ }
+ if(true == chg_changed_flag){
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+ chg_changed_flag = false;
+ }
+ }
+
+ return 0;
+}
+#endif
+#if 0
+static irqreturn_t aw3215_chgin_irq_handler_thread(void *data)
+{
+ struct aw3215_dev_info *bdi = data;
+ struct aw3215_platform_data *pdata = bdi->pdata;
+ int g_gpio_in =0;
+ struct sched_param param = { .sched_priority = 2 };
+
+ param.sched_priority= 31;
+ sched_setscheduler(current, SCHED_FIFO, ¶m);
+
+ while(1)
+ {
+ down(&bdi->chgin_sem);
+
+ g_gpio_in = gpio_get_value(pdata->gpio_chgin);
+
+ /*charging status*/
+ if (g_gpio_in == USB_IN) {
+ if (bdi->chgin_type == USB_IN) {
+ printk(KERN_INFO"chg usb in err\n");
+ }
+ else if (bdi->stopchg_flag == CHG_STOP_REASON_TEMP){
+ bdi->chgin_type = USB_IN;
+ printk(KERN_INFO"chg usb in temp err\n");
+ bdi->chg_state = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ dwc_otg_chg_inform(0);/*usb in*/
+ }
+ else{
+ bdi->chgin_type = USB_IN;
+
+ disable_irq(bdi->chgstate_irq);
+ //gpio_set_value(pdata->gpio_chgen, CHG_EN_TYPE);
+ //bdi->chg_en = true;
+ //bdi->chgstate_type = CHG_START;
+
+ /* start charging in 5.3ms after enable */
+ if (gpio_get_value(pdata->gpio_chgstate))
+ mdelay(7);
+ if (bdi->chgstate_type == gpio_get_value(pdata->gpio_chgstate))
+ printk(KERN_INFO "chg still not chargin"); /* should not go here */
+ bdi->chgstate_type = gpio_get_value(pdata->gpio_chgstate);
+ bdi->chg_state = POWER_SUPPLY_STATUS_CHARGING;
+
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_HIGH);
+
+ enable_irq(bdi->chgstate_irq);
+
+ printk(KERN_INFO"chg usb in\n");
+ dwc_otg_chg_inform(0);/*usb in*/
+
+ //irq_set_irq_type(bdi->chgin_irq, IRQ_TYPE_LEVEL_HIGH);
+ }
+
+ irq_set_irq_type(bdi->chgin_irq, IRQ_TYPE_LEVEL_HIGH);
+ } else {
+ bdi->chg_state = POWER_SUPPLY_STATUS_DISCHARGING;
+ if (bdi->chgin_type == USB_OUT) {
+ printk(KERN_INFO"chg usb out err\n");
+ } else {
+ bdi->chgin_type = USB_OUT;
+ //SINT32 Usb_plug = DISCONNECTED_FROM_HOST;
+ printk(KERN_INFO"chg usb out\n");
+
+ dwc_otg_chg_inform(1);/*usb out*/
+
+ //irq_set_irq_type(bdi->chgin_irq, IRQ_TYPE_LEVEL_LOW);
+ }
+ irq_set_irq_type(bdi->chgin_irq, IRQ_TYPE_LEVEL_LOW);
+ }
+
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+ enable_irq(bdi->chgin_irq);
+
+ }
+ return 0;
+}
+
+static irqreturn_t aw3215_chgstate_irq_handler_thread(void *data)
+{
+ struct aw3215_dev_info *bdi = data;
+ struct aw3215_platform_data *pdata = bdi->pdata;
+ //unsigned int state_rcd = bdi->chg_state;
+ int g_gpio_state=CHG_STOP;
+ uint adc1_v= 0;
+ struct sched_param param = { .sched_priority = 2 };
+
+ param.sched_priority= 31;
+ sched_setscheduler(current, SCHED_FIFO, ¶m);
+
+ while(1)
+ {
+ down(&bdi->chgstate_sem);
+
+ g_gpio_state = gpio_get_value(pdata->gpio_chgstate);
+
+ /*charging status*/
+ if (g_gpio_state == CHG_START) { /*low charging*/
+ bdi->chg_state = POWER_SUPPLY_STATUS_CHARGING;
+
+ if (bdi->chgstate_type == CHG_START) {
+ printk(KERN_INFO"chg chging err!\n");
+ } else {
+ bdi->chgstate_type = CHG_START;
+
+ //irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_HIGH);
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+ printk(KERN_INFO"chg charging\n");
+ }
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_HIGH);
+ } else {/*high stop charging*/
+ if (bdi->chgstate_type == CHG_STOP) {
+ printk(KERN_INFO"chg full err!\n");
+ } else {
+ if ((bdi->chgin_type == USB_IN)&&(bdi->stopchg_flag == CHG_STOP_REASON_TEMP)){
+ bdi->chg_state = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+ }
+ else if(bdi->chgin_type == USB_IN){
+ bdi->chg_state = POWER_SUPPLY_STATUS_FULL;
+ wake_lock(&(bdi->wlock_chgfull));
+ mod_timer(&bdi->changed_timer, jiffies + msecs_to_jiffies(500));
+ }
+ else{
+ bdi->chg_state = POWER_SUPPLY_STATUS_DISCHARGING;
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+ }
+
+ bdi->chgstate_type = CHG_STOP;
+
+ printk(KERN_INFO "chg %s %s stop\n",
+ (bdi->chg_state == POWER_SUPPLY_STATUS_FULL) ? "full" : " ",
+ (bdi->chg_state == POWER_SUPPLY_STATUS_NOT_CHARGING) ? "temp error":"discharging");
+
+ }
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_LOW);
+ }
+ enable_irq(bdi->chgstate_irq);
+
+ }
+ return 0;
+}
+
+#endif
+static int aw3215_setup_pdata(struct aw3215_dev_info *bdi,
+ struct aw3215_platform_data *pdata)
+{
+ int ret;
+
+
+ if (!gpio_is_valid(pdata->gpio_chgen))
+ return -1;
+
+ ret = gpio_request(pdata->gpio_chgen, "chg_en");
+ if (ret < 0)
+ goto out;
+ ret = zx29_gpio_config(pdata->gpio_chgen, pdata->gpio_chgen_gpio_sel);
+ ret = gpio_direction_output(pdata->gpio_chgen, CHG_EN_TYPE);
+ bdi->chg_en =true;
+ bdi->stopchg_flag=CHG_STOP_DEFALT;
+#ifndef CONFIG_AIC8800_MIFI_EN
+ //chg termination current ctrl
+ if (!gpio_is_valid(pdata->gpio_chgctrl))
+ return -1;
+
+ ret = gpio_request(pdata->gpio_chgctrl, "chg_ctrl");
+ if (ret < 0)
+ goto out;
+ ret = zx29_gpio_config(pdata->gpio_chgctrl, pdata->gpio_chgctrl_gpio_sel);
+ if (ret < 0)
+ goto out;
+ ret = gpio_direction_output(pdata->gpio_chgctrl, 0);
+ if (ret < 0)
+ goto out;
+#endif
+ return 0;
+out:
+ //gpio_free(pdata->gpio_int);
+ return -1;
+}
+
+
+static int aw3215_init_state(struct aw3215_dev_info *bdi)
+{
+ struct aw3215_platform_data *pdata;
+ int ret = 0;
+ unsigned int g_gpio_in,g_gpio_state;
+ unsigned int chgin_irq_type=IRQ_TYPE_NONE;
+ unsigned int chgstate_irq_type=IRQ_TYPE_NONE;
+
+ pdata = bdi->pdata;
+
+ if (!gpio_is_valid(pdata->gpio_chgin))
+ goto error;
+
+ ret = gpio_request(pdata->gpio_chgin, "chg_usbin");
+ if (ret < 0)
+ goto error;
+
+ zx29_gpio_pd_pu_set(pdata->gpio_chgin, IO_CFG_PULL_DISABLE);
+ ret = zx29_gpio_config(pdata->gpio_chgin, pdata->gpio_chgin_gpio_sel);
+ if (ret < 0)
+ goto error;
+
+ ret = gpio_direction_input(pdata->gpio_chgin);
+ if (ret < 0)
+ goto error;
+
+ mdelay(20);/*?*/
+ g_gpio_in = gpio_get_value(pdata->gpio_chgin);
+
+ if ( USB_IN == g_gpio_in){
+ bdi->chgin_type = USB_IN;
+ printk(KERN_INFO"init usb in\n");
+ chgin_irq_type = IRQ_TYPE_LEVEL_HIGH;
+#ifdef _CHARGER_UNNOTIFY_USB_
+ if(get_adc1_voltage()>USB_ENUM_MIN)
+#endif
+ dwc_otg_chg_inform(0);/*usb in*/
+ }
+ else {
+ bdi->chgin_type = USB_OUT;
+ bdi->chg_state=POWER_SUPPLY_STATUS_DISCHARGING;
+ printk(KERN_INFO"init usb out\n");
+ chgin_irq_type = IRQ_TYPE_LEVEL_LOW;
+ dwc_otg_chg_inform(1);/*usb out*/
+ }
+
+ bdi->chgin_irq= gpio_to_irq(pdata->gpio_chgin);
+
+ ret = zx29_gpio_config(pdata->gpio_chgin,pdata->gpio_chgin_fun_sel);
+ if (ret < 0)
+ goto error;
+ //zx29_gpio_set_inttype(pdata->gpio_chgin,chgin_irq_type); //INT_POSEDGE
+ //pcu_clr_irq_pending(bdi->chgin_irq);
+ irq_set_irq_type(bdi->chgin_irq, chgin_irq_type);
+
+ if (!gpio_is_valid(pdata->gpio_chgstate))
+ goto error;
+
+ ret = gpio_request(pdata->gpio_chgstate, "chg_state");
+ if (ret < 0)
+ goto error;
+
+ zx29_gpio_pd_pu_set(pdata->gpio_chgstate, IO_CFG_PULL_DISABLE);
+
+ bdi->chgstate_irq= gpio_to_irq(pdata->gpio_chgstate);
+
+ ret = zx29_gpio_config(pdata->gpio_chgstate, pdata->gpio_chgstate_gpio_sel);
+ if (ret < 0)
+ goto error;
+
+ ret = gpio_direction_input(pdata->gpio_chgstate);
+ if (ret < 0)
+ goto error;
+
+ mdelay(20);/*?*/
+ g_gpio_state = gpio_get_value(pdata->gpio_chgstate);
+
+ if (CHG_START == g_gpio_state){
+ bdi->chgstate_type=CHG_START ;
+ bdi->chg_state=POWER_SUPPLY_STATUS_CHARGING;
+
+ printk(KERN_INFO"init chg state chargeing\n");
+ chgstate_irq_type = IRQ_TYPE_LEVEL_HIGH;
+ //dwc_otg_chg_inform(0);/*usb in*/
+ }
+ else {
+ bdi->chgstate_type =CHG_STOP ;
+
+ printk(KERN_INFO"init chg state discharger or full\n");
+ chgstate_irq_type = IRQ_TYPE_LEVEL_LOW;
+ //dwc_otg_chg_inform(1);/*usb out*/
+ if( bdi->chgin_type == USB_IN)
+ bdi->chg_state=POWER_SUPPLY_STATUS_FULL;
+ else
+ bdi->chg_state=POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ ret = zx29_gpio_config(pdata->gpio_chgstate,pdata->gpio_chgstate_fun_sel);
+ if (ret < 0)
+ goto error;
+
+ //zx29_gpio_set_inttype(pdata->gpio_chgstate,chgstate_irq_type); //INT_POSEDGE
+
+ //pcu_clr_irq_pending(bdi->chgstate_irq);
+ irq_set_irq_type(bdi->chgstate_irq, chgstate_irq_type);
+
+ return 0;
+error:
+ printk(KERN_INFO"chg gpio error ret = %d\n",ret);
+ return -1;
+}
+
+
+
+static void aw3215_charge_typedet(T_TYPE_USB_DETECT chg_type)
+{
+ //u8 ret;
+ #ifdef DBG_CHARGE
+ //printk(KERN_INFO"charge type is %d in\n",chg_type);
+ #endif
+
+ if(TYPE_ADAPTER == chg_type){
+ printk(KERN_INFO"chg type DC\n");
+ g_bdi->charger.type = POWER_SUPPLY_PCAC__AC;
+ }
+ else{
+ printk(KERN_INFO"chg type PC\n");
+ g_bdi->charger.type = POWER_SUPPLY_PCAC__PC;
+ }
+
+}
+
+
+#if defined(CONFIG_DEBUG_FS)
+static ssize_t debugfs_regs_write(struct file *file, const char __user *buf,size_t nbytes, loff_t *ppos)
+{
+ unsigned int val1, val2;
+ //u8 reg, value;
+ int ret = 0;
+ char *kern_buf;
+ //struct seq_file *s = file->private_data;
+ //struct aw3215_dev_info *aw3215 = s->private;
+
+ kern_buf = kzalloc(nbytes, GFP_KERNEL);
+
+ if (!kern_buf) {
+ printk(KERN_INFO "aw3215_charger: Failed to allocate buffer\n");
+ return -ENOMEM;
+ }
+
+ if (copy_from_user(kern_buf, (void __user *)buf, nbytes)) {
+ kfree(kern_buf);
+ return -ENOMEM;
+ }
+ printk(KERN_INFO "%s input str=%s,nbytes=%d \n", __func__, kern_buf,nbytes);
+
+ ret = sscanf(kern_buf, "%x:%x", &val1, &val2);
+ if (ret < 2) {
+ printk(KERN_INFO "sgm40561_charger: failed to read user buf, ret=%d, input 0x%x:0x%x\n",
+ ret,val1, val2);
+ kfree(kern_buf);
+ return -EINVAL;
+ }
+ kfree(kern_buf);
+
+ return ret ? ret : nbytes;
+}
+
+static int debugfs_regs_show(struct seq_file *s, void *v)
+{
+ //int i;
+ int ret=0;
+ //int curr = 0;
+ struct aw3215_dev_info *aw3215 = s->private;
+
+ /*charger type*/
+ if((int)aw3215->charger.type == POWER_SUPPLY_PCAC__PC){
+ seq_printf(s, "charger type is PC\n");
+ }
+ else if((int)aw3215->charger.type == POWER_SUPPLY_PCAC__AC){
+ seq_printf(s, "charger type is AC\n");
+ }
+ else
+ seq_printf(s, "charger type is unknow = %d\n",aw3215->charger.type);
+
+ seq_printf(s, "mmi charger config state = %d\n",aw3215->chg_en);
+ seq_printf(s, "chg in state = %s\n",(aw3215->chgin_type==USB_IN)? "USB_IN": "USB_OUT");
+ seq_printf(s, "chg_state state = %s\n",aw3215->chgstate_type ? "CHG_STOP": "CHG_START");
+#ifdef CHG_DEBUG
+ seq_printf("chgstate int en reg1 =0x%x:\n", zx_read_reg(base_testtt + GIC_DIST_ENABLE_SET+0x4));
+ seq_printf("chgstate int en reg2 =0x%x:\n", zx_read_reg(base_testtt + GIC_DIST_ENABLE_SET+0x8));
+ seq_printf("chgstate int pending reg1 =0x%x:\n", zx_read_reg(base_testtt + GIC_DIST_PENDING_SET+0x4));
+ seq_printf("chgstate int pending reg2 =0x%x:\n", zx_read_reg(base_testtt + GIC_DIST_PENDING_SET+0x8));
+#endif
+ return ret;
+}
+
+#define DEBUGFS_FILE_ENTRY(name) \
+static int debugfs_##name##_open(struct inode *inode, struct file *file) \
+{\
+return single_open(file, debugfs_##name##_show, inode->i_private); \
+}\
+\
+static const struct file_operations debugfs_##name##_fops = { \
+.owner= THIS_MODULE, \
+.open= debugfs_##name##_open, \
+.write=debugfs_##name##_write, \
+.read= seq_read, \
+.llseek= seq_lseek, \
+.release= single_release, \
+}
+
+DEBUGFS_FILE_ENTRY(regs);
+
+static struct dentry *g_charger_root;
+
+static void debugfs_charger_init(struct aw3215_dev_info *aw3215)
+{
+ struct dentry *root;
+ struct dentry *node;
+ //int i;
+
+ if(!aw3215)
+ return;
+
+ //create root
+ root = debugfs_create_dir("charger_zx29", NULL);
+ if (!root) {
+ dev_err(aw3215->dev, "debugfs_create_dir err=%ld\n", IS_ERR(root));
+ goto err;
+ }
+
+ //print regs;
+ node = debugfs_create_file("regs", S_IRUGO | S_IWUGO, root, aw3215, &debugfs_regs_fops);
+ if (!node){
+ dev_err(aw3215->dev, "debugfs_create_dir err=%ld\n", IS_ERR(node));
+ goto err;
+ }
+
+ g_charger_root = (void *)root;
+ return;
+err:
+ dev_err(aw3215->dev, "debugfs_charger_init err\n");
+}
+
+#endif
+
+static void aw3215_changed_timer_function(unsigned long data)
+{
+ struct aw3215_dev_info *bdi = (void *)data;
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+ //printk("chg timer callback\n");
+ del_timer(&bdi->changed_timer);
+ wake_unlock(&(bdi->wlock_chgfull));
+ printk("chg timer callback end\n");
+
+}
+
+static int __devinit aw3215_charger_probe(struct platform_device *pdev)
+{
+ struct aw3215_platform_data *pdata = pdev->dev.platform_data;
+ struct device *dev = &pdev->dev;
+ struct aw3215_dev_info *bdi;
+ //unsigned long flag;
+ int ret;
+
+ bdi = devm_kzalloc(dev, sizeof(*bdi), GFP_KERNEL);
+ if (!bdi) {
+ dev_err(dev, "Can't alloc bdi struct\n");
+ return -ENOMEM;
+ }
+ bdi->dev = dev;
+ bdi->pdata = pdata;
+
+ //printk(KERN_INFO "charger probe.\n");
+
+ bdi->chg_state = POWER_SUPPLY_STATUS_UNKNOWN;
+ bdi->charger.type = POWER_SUPPLY_TYPE_UNKNOWN;
+
+ g_bdi = bdi;
+
+ ret = aw3215_setup_pdata(bdi, pdata);
+ if (ret) {
+ dev_err(dev, "Can't get irq info\n");
+ return -EINVAL;
+ }
+
+ aw3215_charger_init(&bdi->charger);
+
+ ret = power_supply_register(dev, &bdi->charger);
+ if (ret) {
+ dev_err(dev, "Can't register charger\n");
+ goto out2;
+ }
+ //printk(KERN_INFO "aw3215_probe power_supply_register charger ok.\n");
+
+ aw3215_battery_init(&bdi->battery);
+
+ ret = power_supply_register(dev, &bdi->battery);
+ if (ret) {
+ dev_err(dev, "Can't register battery\n");
+ goto out1;
+ }
+ //printk(KERN_INFO "aw3215_probe power_supply_register battery ok.\n");
+ //sema_init(&bdi->chgin_sem, 0);
+ sema_init(&bdi->chgstate_sem, 0);
+
+ dwc_chg_Regcallback(aw3215_charge_typedet);/*register for usb*/
+ aw3215_init_state(bdi);
+ init_timer(&bdi->changed_timer);
+ bdi->changed_timer.function = aw3215_changed_timer_function;
+ bdi->changed_timer.data = (unsigned long)bdi;
+ wake_lock_init(&(bdi->wlock_chgfull), WAKE_LOCK_SUSPEND, "aw3215_wake_lock_chgfull");
+
+/*chg in*/
+ ret = request_irq(bdi->chgin_irq, aw3215_charger_in_irq_primary_handler,IRQF_NO_THREAD, "aw3215-chgin", bdi);
+ if (ret < 0) {
+ dev_err(dev, "Can't set up irq handler\n");
+ if (bdi->pdata->gpio_chgin)
+ gpio_free(bdi->pdata->gpio_chgin);
+
+ goto out3;
+ }
+ irq_set_irq_wake(bdi->chgin_irq, 1);
+ //bdi->chgin_irq_thread = kthread_run(aw3215_chgin_irq_handler_thread, bdi, "aw3215-chgin");
+ //BUG_ON(IS_ERR(bdi->chgin_irq_thread));
+
+/*chg state*/
+ ret = request_irq(bdi->chgstate_irq, aw3215_charger_state_irq_primary_handler,IRQF_NO_THREAD, "aw3215-chgstate", bdi);
+ if (ret < 0) {
+ dev_err(dev, "Can't set up irq handler\n");
+ if (bdi->pdata->gpio_chgstate)
+ gpio_free(bdi->pdata->gpio_chgstate);
+
+ goto out3;
+ }
+ irq_set_irq_wake(bdi->chgstate_irq, 1);
+ //bdi->chgstate_irq_thread = kthread_run(aw3215_chgstate_irq_handler_thread, bdi, "aw3215-chgstate");
+ //BUG_ON(IS_ERR(bdi->chgstate_irq_thread));
+ bdi->chgstate_irq_thread = kthread_run(aw3215_chg_irq_handler_thread, bdi, "aw3215-chgstate");
+ BUG_ON(IS_ERR(bdi->chgstate_irq_thread));
+
+#if defined(CONFIG_DEBUG_FS)
+ debugfs_charger_init(bdi);
+#endif
+
+#ifdef DBG_CHARGE
+ //printk(KERN_INFO "aw3215_probe end.\n");
+#endif
+
+ return 0;
+
+out1:
+ power_supply_unregister(&bdi->battery);
+out2:
+ //pm_runtime_disable(dev);
+ power_supply_unregister(&bdi->charger);
+out3:
+
+ return ret;
+
+}
+
+static int aw3215_charger_remove(struct platform_device *pdev)
+{
+ struct aw3215_platform_data *pdata = pdev->dev.platform_data;
+
+ power_supply_unregister(&(g_bdi->battery));
+ power_supply_unregister(&(g_bdi->charger));
+
+ pm_runtime_disable(g_bdi->dev);
+
+ if (pdata->gpio_chgctrl)
+ gpio_free(pdata->gpio_chgctrl);
+ if (pdata->gpio_chgen)
+ gpio_free(pdata->gpio_chgen);
+ if (pdata->gpio_chgin)
+ gpio_free(pdata->gpio_chgin);
+ if (pdata->gpio_chgstate)
+ gpio_free(pdata->gpio_chgstate);
+
+
+#if defined(CONFIG_DEBUG_FS)
+ if(g_charger_root){
+ //printk(KERN_INFO "aw3215_device_exit:debugfs_remove_recursive \n");
+ debugfs_remove_recursive(g_charger_root);
+ }
+#endif
+
+ return 0;
+}
+
+
+static struct platform_driver zx29_charger_driver = {
+ .probe = aw3215_charger_probe,
+ .remove = __devexit_p(aw3215_charger_remove),
+ .driver = {
+ .name = "aw3215-charger",
+ .owner = THIS_MODULE,
+ },
+};
+
+//module_platform_driver(zx29_charger_driver);
+
+
+static int __init zx29_charger_init(void)
+{
+ return platform_driver_register(&zx29_charger_driver);
+}
+
+static void __exit zx29_charger_exit(void)
+{
+ platform_driver_unregister(&zx29_charger_driver);
+}
+
+module_init(zx29_charger_init);
+module_exit(zx29_charger_exit);
+
+
+MODULE_AUTHOR("Mark A. Greer <mgreer@animalcreek.com>");
+MODULE_DESCRIPTION("AW3215 Charger Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:zx29_charger");
+
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/bq27x00_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/bq27x00_battery.c
new file mode 100644
index 0000000..222ccd8
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/bq27x00_battery.c
@@ -0,0 +1,917 @@
+/*
+ * BQ27x00 battery driver
+ *
+ * Copyright (C) 2008 Rodolfo Giometti <giometti@linux.it>
+ * Copyright (C) 2008 Eurotech S.p.A. <info@eurotech.it>
+ * Copyright (C) 2010-2011 Lars-Peter Clausen <lars@metafoo.de>
+ * Copyright (C) 2011 Pali Rohár <pali.rohar@gmail.com>
+ *
+ * Based on a previous work by Copyright (C) 2008 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ */
+
+/*
+ * Datasheets:
+ * http://focus.ti.com/docs/prod/folders/print/bq27000.html
+ * http://focus.ti.com/docs/prod/folders/print/bq27500.html
+ */
+
+#include <linux/module.h>
+#include <linux/param.h>
+#include <linux/jiffies.h>
+#include <linux/workqueue.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/idr.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <asm/unaligned.h>
+
+#include <linux/power/bq27x00_battery.h>
+
+#define DRIVER_VERSION "1.2.0"
+
+#define BQ27x00_REG_TEMP 0x06
+#define BQ27x00_REG_VOLT 0x08
+#define BQ27x00_REG_AI 0x14
+#define BQ27x00_REG_FLAGS 0x0A
+#define BQ27x00_REG_TTE 0x16
+#define BQ27x00_REG_TTF 0x18
+#define BQ27x00_REG_TTECP 0x26
+#define BQ27x00_REG_NAC 0x0C /* Nominal available capacity */
+#define BQ27x00_REG_LMD 0x12 /* Last measured discharge */
+#define BQ27x00_REG_CYCT 0x2A /* Cycle count total */
+#define BQ27x00_REG_AE 0x22 /* Available energy */
+
+#define BQ27000_REG_RSOC 0x0B /* Relative State-of-Charge */
+#define BQ27000_REG_ILMD 0x76 /* Initial last measured discharge */
+#define BQ27000_FLAG_EDVF BIT(0) /* Final End-of-Discharge-Voltage flag */
+#define BQ27000_FLAG_EDV1 BIT(1) /* First End-of-Discharge-Voltage flag */
+#define BQ27000_FLAG_CI BIT(4) /* Capacity Inaccurate flag */
+#define BQ27000_FLAG_FC BIT(5)
+#define BQ27000_FLAG_CHGS BIT(7) /* Charge state flag */
+
+#define BQ27500_REG_SOC 0x2C
+#define BQ27500_REG_DCAP 0x3C /* Design capacity */
+#define BQ27500_FLAG_DSC BIT(0)
+#define BQ27500_FLAG_SOCF BIT(1) /* State-of-Charge threshold final */
+#define BQ27500_FLAG_SOC1 BIT(2) /* State-of-Charge threshold 1 */
+#define BQ27500_FLAG_FC BIT(9)
+
+#define BQ27000_RS 20 /* Resistor sense */
+
+struct bq27x00_device_info;
+struct bq27x00_access_methods {
+ int (*read)(struct bq27x00_device_info *di, u8 reg, bool single);
+};
+
+enum bq27x00_chip { BQ27000, BQ27500 };
+
+struct bq27x00_reg_cache {
+ int temperature;
+ int time_to_empty;
+ int time_to_empty_avg;
+ int time_to_full;
+ int charge_full;
+ int cycle_count;
+ int capacity;
+ int energy;
+ int flags;
+};
+
+struct bq27x00_device_info {
+ struct device *dev;
+ int id;
+ enum bq27x00_chip chip;
+
+ struct bq27x00_reg_cache cache;
+ int charge_design_full;
+
+ unsigned long last_update;
+ struct delayed_work work;
+
+ struct power_supply bat;
+
+ struct bq27x00_access_methods bus;
+
+ struct mutex lock;
+};
+
+static enum power_supply_property bq27x00_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
+ POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_ENERGY_NOW,
+};
+
+static unsigned int poll_interval = 360;
+module_param(poll_interval, uint, 0644);
+MODULE_PARM_DESC(poll_interval, "battery poll interval in seconds - " \
+ "0 disables polling");
+
+/*
+ * Common code for BQ27x00 devices
+ */
+
+static inline int bq27x00_read(struct bq27x00_device_info *di, u8 reg,
+ bool single)
+{
+ return di->bus.read(di, reg, single);
+}
+
+/*
+ * Return the battery Relative State-of-Charge
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_read_rsoc(struct bq27x00_device_info *di)
+{
+ int rsoc;
+
+ if (di->chip == BQ27500)
+ rsoc = bq27x00_read(di, BQ27500_REG_SOC, false);
+ else
+ rsoc = bq27x00_read(di, BQ27000_REG_RSOC, true);
+
+ if (rsoc < 0)
+ dev_dbg(di->dev, "error reading relative State-of-Charge\n");
+
+ return rsoc;
+}
+
+/*
+ * Return a battery charge value in µAh
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_read_charge(struct bq27x00_device_info *di, u8 reg)
+{
+ int charge;
+
+ charge = bq27x00_read(di, reg, false);
+ if (charge < 0) {
+ dev_dbg(di->dev, "error reading charge register %02x: %d\n",
+ reg, charge);
+ return charge;
+ }
+
+ if (di->chip == BQ27500)
+ charge *= 1000;
+ else
+ charge = charge * 3570 / BQ27000_RS;
+
+ return charge;
+}
+
+/*
+ * Return the battery Nominal available capaciy in µAh
+ * Or < 0 if something fails.
+ */
+static inline int bq27x00_battery_read_nac(struct bq27x00_device_info *di)
+{
+ return bq27x00_battery_read_charge(di, BQ27x00_REG_NAC);
+}
+
+/*
+ * Return the battery Last measured discharge in µAh
+ * Or < 0 if something fails.
+ */
+static inline int bq27x00_battery_read_lmd(struct bq27x00_device_info *di)
+{
+ return bq27x00_battery_read_charge(di, BQ27x00_REG_LMD);
+}
+
+/*
+ * Return the battery Initial last measured discharge in µAh
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_read_ilmd(struct bq27x00_device_info *di)
+{
+ int ilmd;
+
+ if (di->chip == BQ27500)
+ ilmd = bq27x00_read(di, BQ27500_REG_DCAP, false);
+ else
+ ilmd = bq27x00_read(di, BQ27000_REG_ILMD, true);
+
+ if (ilmd < 0) {
+ dev_dbg(di->dev, "error reading initial last measured discharge\n");
+ return ilmd;
+ }
+
+ if (di->chip == BQ27500)
+ ilmd *= 1000;
+ else
+ ilmd = ilmd * 256 * 3570 / BQ27000_RS;
+
+ return ilmd;
+}
+
+/*
+ * Return the battery Available energy in µWh
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_read_energy(struct bq27x00_device_info *di)
+{
+ int ae;
+
+ ae = bq27x00_read(di, BQ27x00_REG_AE, false);
+ if (ae < 0) {
+ dev_dbg(di->dev, "error reading available energy\n");
+ return ae;
+ }
+
+ if (di->chip == BQ27500)
+ ae *= 1000;
+ else
+ ae = ae * 29200 / BQ27000_RS;
+
+ return ae;
+}
+
+/*
+ * Return the battery temperature in tenths of degree Celsius
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_read_temperature(struct bq27x00_device_info *di)
+{
+ int temp;
+
+ temp = bq27x00_read(di, BQ27x00_REG_TEMP, false);
+ if (temp < 0) {
+ dev_err(di->dev, "error reading temperature\n");
+ return temp;
+ }
+
+ if (di->chip == BQ27500)
+ temp -= 2731;
+ else
+ temp = ((temp * 5) - 5463) / 2;
+
+ return temp;
+}
+
+/*
+ * Return the battery Cycle count total
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_read_cyct(struct bq27x00_device_info *di)
+{
+ int cyct;
+
+ cyct = bq27x00_read(di, BQ27x00_REG_CYCT, false);
+ if (cyct < 0)
+ dev_err(di->dev, "error reading cycle count total\n");
+
+ return cyct;
+}
+
+/*
+ * Read a time register.
+ * Return < 0 if something fails.
+ */
+static int bq27x00_battery_read_time(struct bq27x00_device_info *di, u8 reg)
+{
+ int tval;
+
+ tval = bq27x00_read(di, reg, false);
+ if (tval < 0) {
+ dev_dbg(di->dev, "error reading time register %02x: %d\n",
+ reg, tval);
+ return tval;
+ }
+
+ if (tval == 65535)
+ return -ENODATA;
+
+ return tval * 60;
+}
+
+static void bq27x00_update(struct bq27x00_device_info *di)
+{
+ struct bq27x00_reg_cache cache = {0, };
+ bool is_bq27500 = di->chip == BQ27500;
+
+ cache.flags = bq27x00_read(di, BQ27x00_REG_FLAGS, !is_bq27500);
+ if (cache.flags >= 0) {
+ if (!is_bq27500 && (cache.flags & BQ27000_FLAG_CI)) {
+ dev_info(di->dev, "battery is not calibrated! ignoring capacity values\n");
+ cache.capacity = -ENODATA;
+ cache.energy = -ENODATA;
+ cache.time_to_empty = -ENODATA;
+ cache.time_to_empty_avg = -ENODATA;
+ cache.time_to_full = -ENODATA;
+ cache.charge_full = -ENODATA;
+ } else {
+ cache.capacity = bq27x00_battery_read_rsoc(di);
+ cache.energy = bq27x00_battery_read_energy(di);
+ cache.time_to_empty = bq27x00_battery_read_time(di, BQ27x00_REG_TTE);
+ cache.time_to_empty_avg = bq27x00_battery_read_time(di, BQ27x00_REG_TTECP);
+ cache.time_to_full = bq27x00_battery_read_time(di, BQ27x00_REG_TTF);
+ cache.charge_full = bq27x00_battery_read_lmd(di);
+ }
+ cache.temperature = bq27x00_battery_read_temperature(di);
+ cache.cycle_count = bq27x00_battery_read_cyct(di);
+
+ /* We only have to read charge design full once */
+ if (di->charge_design_full <= 0)
+ di->charge_design_full = bq27x00_battery_read_ilmd(di);
+ }
+
+ if (memcmp(&di->cache, &cache, sizeof(cache)) != 0) {
+ di->cache = cache;
+ power_supply_changed(&di->bat);
+ }
+
+ di->last_update = jiffies;
+}
+
+static void bq27x00_battery_poll(struct work_struct *work)
+{
+ struct bq27x00_device_info *di =
+ container_of(work, struct bq27x00_device_info, work.work);
+
+ bq27x00_update(di);
+
+ if (poll_interval > 0) {
+ /* The timer does not have to be accurate. */
+ set_timer_slack(&di->work.timer, poll_interval * HZ / 4);
+ schedule_delayed_work(&di->work, poll_interval * HZ);
+ }
+}
+
+/*
+ * Return the battery average current in µA
+ * Note that current can be negative signed as well
+ * Or 0 if something fails.
+ */
+static int bq27x00_battery_current(struct bq27x00_device_info *di,
+ union power_supply_propval *val)
+{
+ int curr;
+ int flags;
+
+ curr = bq27x00_read(di, BQ27x00_REG_AI, false);
+ if (curr < 0) {
+ dev_err(di->dev, "error reading current\n");
+ return curr;
+ }
+
+ if (di->chip == BQ27500) {
+ /* bq27500 returns signed value */
+ val->intval = (int)((s16)curr) * 1000;
+ } else {
+ flags = bq27x00_read(di, BQ27x00_REG_FLAGS, false);
+ if (flags & BQ27000_FLAG_CHGS) {
+ dev_dbg(di->dev, "negative current!\n");
+ curr = -curr;
+ }
+
+ val->intval = curr * 3570 / BQ27000_RS;
+ }
+
+ return 0;
+}
+
+static int bq27x00_battery_status(struct bq27x00_device_info *di,
+ union power_supply_propval *val)
+{
+ int status;
+
+ if (di->chip == BQ27500) {
+ if (di->cache.flags & BQ27500_FLAG_FC)
+ status = POWER_SUPPLY_STATUS_FULL;
+ else if (di->cache.flags & BQ27500_FLAG_DSC)
+ status = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ status = POWER_SUPPLY_STATUS_CHARGING;
+ } else {
+ if (di->cache.flags & BQ27000_FLAG_FC)
+ status = POWER_SUPPLY_STATUS_FULL;
+ else if (di->cache.flags & BQ27000_FLAG_CHGS)
+ status = POWER_SUPPLY_STATUS_CHARGING;
+ else if (power_supply_am_i_supplied(&di->bat))
+ status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else
+ status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ val->intval = status;
+
+ return 0;
+}
+
+static int bq27x00_battery_capacity_level(struct bq27x00_device_info *di,
+ union power_supply_propval *val)
+{
+ int level;
+
+ if (di->chip == BQ27500) {
+ if (di->cache.flags & BQ27500_FLAG_FC)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+ else if (di->cache.flags & BQ27500_FLAG_SOC1)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+ else if (di->cache.flags & BQ27500_FLAG_SOCF)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
+ else
+ level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ } else {
+ if (di->cache.flags & BQ27000_FLAG_FC)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+ else if (di->cache.flags & BQ27000_FLAG_EDV1)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+ else if (di->cache.flags & BQ27000_FLAG_EDVF)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
+ else
+ level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ }
+
+ val->intval = level;
+
+ return 0;
+}
+
+/*
+ * Return the battery Voltage in milivolts
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_voltage(struct bq27x00_device_info *di,
+ union power_supply_propval *val)
+{
+ int volt;
+
+ volt = bq27x00_read(di, BQ27x00_REG_VOLT, false);
+ if (volt < 0) {
+ dev_err(di->dev, "error reading voltage\n");
+ return volt;
+ }
+
+ val->intval = volt * 1000;
+
+ return 0;
+}
+
+static int bq27x00_simple_value(int value,
+ union power_supply_propval *val)
+{
+ if (value < 0)
+ return value;
+
+ val->intval = value;
+
+ return 0;
+}
+
+#define to_bq27x00_device_info(x) container_of((x), \
+ struct bq27x00_device_info, bat);
+
+static int bq27x00_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ struct bq27x00_device_info *di = to_bq27x00_device_info(psy);
+
+ mutex_lock(&di->lock);
+ if (time_is_before_jiffies(di->last_update + 5 * HZ)) {
+ cancel_delayed_work_sync(&di->work);
+ bq27x00_battery_poll(&di->work.work);
+ }
+ mutex_unlock(&di->lock);
+
+ if (psp != POWER_SUPPLY_PROP_PRESENT && di->cache.flags < 0)
+ return -ENODEV;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = bq27x00_battery_status(di, val);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = bq27x00_battery_voltage(di, val);
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = di->cache.flags < 0 ? 0 : 1;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = bq27x00_battery_current(di, val);
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = bq27x00_simple_value(di->cache.capacity, val);
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+ ret = bq27x00_battery_capacity_level(di, val);
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ ret = bq27x00_simple_value(di->cache.temperature, val);
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
+ ret = bq27x00_simple_value(di->cache.time_to_empty, val);
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+ ret = bq27x00_simple_value(di->cache.time_to_empty_avg, val);
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
+ ret = bq27x00_simple_value(di->cache.time_to_full, val);
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ ret = bq27x00_simple_value(bq27x00_battery_read_nac(di), val);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ ret = bq27x00_simple_value(di->cache.charge_full, val);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ ret = bq27x00_simple_value(di->charge_design_full, val);
+ break;
+ case POWER_SUPPLY_PROP_CYCLE_COUNT:
+ ret = bq27x00_simple_value(di->cache.cycle_count, val);
+ break;
+ case POWER_SUPPLY_PROP_ENERGY_NOW:
+ ret = bq27x00_simple_value(di->cache.energy, val);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static void bq27x00_external_power_changed(struct power_supply *psy)
+{
+ struct bq27x00_device_info *di = to_bq27x00_device_info(psy);
+
+ cancel_delayed_work_sync(&di->work);
+ schedule_delayed_work(&di->work, 0);
+}
+
+static int bq27x00_powersupply_init(struct bq27x00_device_info *di)
+{
+ int ret;
+
+ di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
+ di->bat.properties = bq27x00_battery_props;
+ di->bat.num_properties = ARRAY_SIZE(bq27x00_battery_props);
+ di->bat.get_property = bq27x00_battery_get_property;
+ di->bat.external_power_changed = bq27x00_external_power_changed;
+
+ INIT_DELAYED_WORK(&di->work, bq27x00_battery_poll);
+ mutex_init(&di->lock);
+
+ ret = power_supply_register(di->dev, &di->bat);
+ if (ret) {
+ dev_err(di->dev, "failed to register battery: %d\n", ret);
+ return ret;
+ }
+
+ dev_info(di->dev, "support ver. %s enabled\n", DRIVER_VERSION);
+
+ bq27x00_update(di);
+
+ return 0;
+}
+
+static void bq27x00_powersupply_unregister(struct bq27x00_device_info *di)
+{
+ /*
+ * power_supply_unregister call bq27x00_battery_get_property which
+ * call bq27x00_battery_poll.
+ * Make sure that bq27x00_battery_poll will not call
+ * schedule_delayed_work again after unregister (which cause OOPS).
+ */
+ poll_interval = 0;
+
+ cancel_delayed_work_sync(&di->work);
+
+ power_supply_unregister(&di->bat);
+
+ mutex_destroy(&di->lock);
+}
+
+
+/* i2c specific code */
+#ifdef CONFIG_BATTERY_BQ27X00_I2C
+
+/* If the system has several batteries we need a different name for each
+ * of them...
+ */
+static DEFINE_IDR(battery_id);
+static DEFINE_MUTEX(battery_mutex);
+
+static int bq27x00_read_i2c(struct bq27x00_device_info *di, u8 reg, bool single)
+{
+ struct i2c_client *client = to_i2c_client(di->dev);
+ struct i2c_msg msg[2];
+ unsigned char data[2];
+ int ret;
+
+ if (!client->adapter)
+ return -ENODEV;
+
+ msg[0].addr = client->addr;
+ msg[0].flags = 0;
+ msg[0].buf = ®
+ msg[0].len = sizeof(reg);
+ msg[1].addr = client->addr;
+ msg[1].flags = I2C_M_RD;
+ msg[1].buf = data;
+ if (single)
+ msg[1].len = 1;
+ else
+ msg[1].len = 2;
+
+ ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+ if (ret < 0)
+ return ret;
+
+ if (!single)
+ ret = get_unaligned_le16(data);
+ else
+ ret = data[0];
+
+ return ret;
+}
+
+static int bq27x00_battery_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ char *name;
+ struct bq27x00_device_info *di;
+ int num;
+ int retval = 0;
+
+ /* Get new ID for the new battery device */
+ retval = idr_pre_get(&battery_id, GFP_KERNEL);
+ if (retval == 0)
+ return -ENOMEM;
+ mutex_lock(&battery_mutex);
+ retval = idr_get_new(&battery_id, client, &num);
+ mutex_unlock(&battery_mutex);
+ if (retval < 0)
+ return retval;
+
+ name = kasprintf(GFP_KERNEL, "%s-%d", id->name, num);
+ if (!name) {
+ dev_err(&client->dev, "failed to allocate device name\n");
+ retval = -ENOMEM;
+ goto batt_failed_1;
+ }
+
+ di = kzalloc(sizeof(*di), GFP_KERNEL);
+ if (!di) {
+ dev_err(&client->dev, "failed to allocate device info data\n");
+ retval = -ENOMEM;
+ goto batt_failed_2;
+ }
+
+ di->id = num;
+ di->dev = &client->dev;
+ di->chip = id->driver_data;
+ di->bat.name = name;
+ di->bus.read = &bq27x00_read_i2c;
+
+ if (bq27x00_powersupply_init(di))
+ goto batt_failed_3;
+
+ i2c_set_clientdata(client, di);
+
+ return 0;
+
+batt_failed_3:
+ kfree(di);
+batt_failed_2:
+ kfree(name);
+batt_failed_1:
+ mutex_lock(&battery_mutex);
+ idr_remove(&battery_id, num);
+ mutex_unlock(&battery_mutex);
+
+ return retval;
+}
+
+static int bq27x00_battery_remove(struct i2c_client *client)
+{
+ struct bq27x00_device_info *di = i2c_get_clientdata(client);
+
+ bq27x00_powersupply_unregister(di);
+
+ kfree(di->bat.name);
+
+ mutex_lock(&battery_mutex);
+ idr_remove(&battery_id, di->id);
+ mutex_unlock(&battery_mutex);
+
+ kfree(di);
+
+ return 0;
+}
+
+static const struct i2c_device_id bq27x00_id[] = {
+ { "bq27200", BQ27000 }, /* bq27200 is same as bq27000, but with i2c */
+ { "bq27500", BQ27500 },
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, bq27x00_id);
+
+static struct i2c_driver bq27x00_battery_driver = {
+ .driver = {
+ .name = "bq27x00-battery",
+ },
+ .probe = bq27x00_battery_probe,
+ .remove = bq27x00_battery_remove,
+ .id_table = bq27x00_id,
+};
+
+static inline int bq27x00_battery_i2c_init(void)
+{
+ int ret = i2c_add_driver(&bq27x00_battery_driver);
+ if (ret)
+ printk(KERN_ERR "Unable to register BQ27x00 i2c driver\n");
+
+ return ret;
+}
+
+static inline void bq27x00_battery_i2c_exit(void)
+{
+ i2c_del_driver(&bq27x00_battery_driver);
+}
+
+#else
+
+static inline int bq27x00_battery_i2c_init(void) { return 0; }
+static inline void bq27x00_battery_i2c_exit(void) {};
+
+#endif
+
+/* platform specific code */
+#ifdef CONFIG_BATTERY_BQ27X00_PLATFORM
+
+static int bq27000_read_platform(struct bq27x00_device_info *di, u8 reg,
+ bool single)
+{
+ struct device *dev = di->dev;
+ struct bq27000_platform_data *pdata = dev->platform_data;
+ unsigned int timeout = 3;
+ int upper, lower;
+ int temp;
+
+ if (!single) {
+ /* Make sure the value has not changed in between reading the
+ * lower and the upper part */
+ upper = pdata->read(dev, reg + 1);
+ do {
+ temp = upper;
+ if (upper < 0)
+ return upper;
+
+ lower = pdata->read(dev, reg);
+ if (lower < 0)
+ return lower;
+
+ upper = pdata->read(dev, reg + 1);
+ } while (temp != upper && --timeout);
+
+ if (timeout == 0)
+ return -EIO;
+
+ return (upper << 8) | lower;
+ }
+
+ return pdata->read(dev, reg);
+}
+
+static int __devinit bq27000_battery_probe(struct platform_device *pdev)
+{
+ struct bq27x00_device_info *di;
+ struct bq27000_platform_data *pdata = pdev->dev.platform_data;
+ int ret;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "no platform_data supplied\n");
+ return -EINVAL;
+ }
+
+ if (!pdata->read) {
+ dev_err(&pdev->dev, "no hdq read callback supplied\n");
+ return -EINVAL;
+ }
+
+ di = kzalloc(sizeof(*di), GFP_KERNEL);
+ if (!di) {
+ dev_err(&pdev->dev, "failed to allocate device info data\n");
+ return -ENOMEM;
+ }
+
+ platform_set_drvdata(pdev, di);
+
+ di->dev = &pdev->dev;
+ di->chip = BQ27000;
+
+ di->bat.name = pdata->name ?: dev_name(&pdev->dev);
+ di->bus.read = &bq27000_read_platform;
+
+ ret = bq27x00_powersupply_init(di);
+ if (ret)
+ goto err_free;
+
+ return 0;
+
+err_free:
+ platform_set_drvdata(pdev, NULL);
+ kfree(di);
+
+ return ret;
+}
+
+static int __devexit bq27000_battery_remove(struct platform_device *pdev)
+{
+ struct bq27x00_device_info *di = platform_get_drvdata(pdev);
+
+ bq27x00_powersupply_unregister(di);
+
+ platform_set_drvdata(pdev, NULL);
+ kfree(di);
+
+ return 0;
+}
+
+static struct platform_driver bq27000_battery_driver = {
+ .probe = bq27000_battery_probe,
+ .remove = __devexit_p(bq27000_battery_remove),
+ .driver = {
+ .name = "bq27000-battery",
+ .owner = THIS_MODULE,
+ },
+};
+
+static inline int bq27x00_battery_platform_init(void)
+{
+ int ret = platform_driver_register(&bq27000_battery_driver);
+ if (ret)
+ printk(KERN_ERR "Unable to register BQ27000 platform driver\n");
+
+ return ret;
+}
+
+static inline void bq27x00_battery_platform_exit(void)
+{
+ platform_driver_unregister(&bq27000_battery_driver);
+}
+
+#else
+
+static inline int bq27x00_battery_platform_init(void) { return 0; }
+static inline void bq27x00_battery_platform_exit(void) {};
+
+#endif
+
+/*
+ * Module stuff
+ */
+
+static int __init bq27x00_battery_init(void)
+{
+ int ret;
+
+ ret = bq27x00_battery_i2c_init();
+ if (ret)
+ return ret;
+
+ ret = bq27x00_battery_platform_init();
+ if (ret)
+ bq27x00_battery_i2c_exit();
+
+ return ret;
+}
+module_init(bq27x00_battery_init);
+
+static void __exit bq27x00_battery_exit(void)
+{
+ bq27x00_battery_platform_exit();
+ bq27x00_battery_i2c_exit();
+}
+module_exit(bq27x00_battery_exit);
+
+MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
+MODULE_DESCRIPTION("BQ27x00 battery monitor driver");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/charger-manager.c b/ap/os/linux/linux-3.4.x/drivers/power/charger-manager.c
new file mode 100644
index 0000000..102267f
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/charger-manager.c
@@ -0,0 +1,1068 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ * MyungJoo Ham <myungjoo.ham@samsung.com>
+ *
+ * This driver enables to monitor battery health and control charger
+ * during suspend-to-mem.
+ * Charger manager depends on other devices. register this later than
+ * the depending devices.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+**/
+
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/rtc.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/platform_device.h>
+#include <linux/power/charger-manager.h>
+#include <linux/regulator/consumer.h>
+
+/*
+ * Regard CM_JIFFIES_SMALL jiffies is small enough to ignore for
+ * delayed works so that we can run delayed works with CM_JIFFIES_SMALL
+ * without any delays.
+ */
+#define CM_JIFFIES_SMALL (2)
+
+/* If y is valid (> 0) and smaller than x, do x = y */
+#define CM_MIN_VALID(x, y) x = (((y > 0) && ((x) > (y))) ? (y) : (x))
+
+/*
+ * Regard CM_RTC_SMALL (sec) is small enough to ignore error in invoking
+ * rtc alarm. It should be 2 or larger
+ */
+#define CM_RTC_SMALL (2)
+
+#define UEVENT_BUF_SIZE 32
+
+static LIST_HEAD(cm_list);
+static DEFINE_MUTEX(cm_list_mtx);
+
+/* About in-suspend (suspend-again) monitoring */
+static struct rtc_device *rtc_dev;
+/*
+ * Backup RTC alarm
+ * Save the wakeup alarm before entering suspend-to-RAM
+ */
+static struct rtc_wkalrm rtc_wkalarm_save;
+/* Backup RTC alarm time in terms of seconds since 01-01-1970 00:00:00 */
+static unsigned long rtc_wkalarm_save_time;
+static bool cm_suspended;
+static bool cm_rtc_set;
+static unsigned long cm_suspend_duration_ms;
+
+/* Global charger-manager description */
+static struct charger_global_desc *g_desc; /* init with setup_charger_manager */
+
+/**
+ * is_batt_present - See if the battery presents in place.
+ * @cm: the Charger Manager representing the battery.
+ */
+static bool is_batt_present(struct charger_manager *cm)
+{
+ union power_supply_propval val;
+ bool present = false;
+ int i, ret;
+
+ switch (cm->desc->battery_present) {
+ case CM_FUEL_GAUGE:
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_PRESENT, &val);
+ if (ret == 0 && val.intval)
+ present = true;
+ break;
+ case CM_CHARGER_STAT:
+ for (i = 0; cm->charger_stat[i]; i++) {
+ ret = cm->charger_stat[i]->get_property(
+ cm->charger_stat[i],
+ POWER_SUPPLY_PROP_PRESENT, &val);
+ if (ret == 0 && val.intval) {
+ present = true;
+ break;
+ }
+ }
+ break;
+ }
+
+ return present;
+}
+
+/**
+ * is_ext_pwr_online - See if an external power source is attached to charge
+ * @cm: the Charger Manager representing the battery.
+ *
+ * Returns true if at least one of the chargers of the battery has an external
+ * power source attached to charge the battery regardless of whether it is
+ * actually charging or not.
+ */
+static bool is_ext_pwr_online(struct charger_manager *cm)
+{
+ union power_supply_propval val;
+ bool online = false;
+ int i, ret;
+
+ /* If at least one of them has one, it's yes. */
+ for (i = 0; cm->charger_stat[i]; i++) {
+ ret = cm->charger_stat[i]->get_property(
+ cm->charger_stat[i],
+ POWER_SUPPLY_PROP_ONLINE, &val);
+ if (ret == 0 && val.intval) {
+ online = true;
+ break;
+ }
+ }
+
+ return online;
+}
+
+/**
+ * get_batt_uV - Get the voltage level of the battery
+ * @cm: the Charger Manager representing the battery.
+ * @uV: the voltage level returned.
+ *
+ * Returns 0 if there is no error.
+ * Returns a negative value on error.
+ */
+static int get_batt_uV(struct charger_manager *cm, int *uV)
+{
+ union power_supply_propval val;
+ int ret;
+
+ if (!cm->fuel_gauge)
+ return -ENODEV;
+
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW, &val);
+ if (ret)
+ return ret;
+
+ *uV = val.intval;
+ return 0;
+}
+
+/**
+ * is_charging - Returns true if the battery is being charged.
+ * @cm: the Charger Manager representing the battery.
+ */
+static bool is_charging(struct charger_manager *cm)
+{
+ int i, ret;
+ bool charging = false;
+ union power_supply_propval val;
+
+ /* If there is no battery, it cannot be charged */
+ if (!is_batt_present(cm))
+ return false;
+
+ /* If at least one of the charger is charging, return yes */
+ for (i = 0; cm->charger_stat[i]; i++) {
+ /* 1. The charger sholuld not be DISABLED */
+ if (cm->emergency_stop)
+ continue;
+ if (!cm->charger_enabled)
+ continue;
+
+ /* 2. The charger should be online (ext-power) */
+ ret = cm->charger_stat[i]->get_property(
+ cm->charger_stat[i],
+ POWER_SUPPLY_PROP_ONLINE, &val);
+ if (ret) {
+ dev_warn(cm->dev, "Cannot read ONLINE value from %s.\n",
+ cm->desc->psy_charger_stat[i]);
+ continue;
+ }
+ if (val.intval == 0)
+ continue;
+
+ /*
+ * 3. The charger should not be FULL, DISCHARGING,
+ * or NOT_CHARGING.
+ */
+ ret = cm->charger_stat[i]->get_property(
+ cm->charger_stat[i],
+ POWER_SUPPLY_PROP_STATUS, &val);
+ if (ret) {
+ dev_warn(cm->dev, "Cannot read STATUS value from %s.\n",
+ cm->desc->psy_charger_stat[i]);
+ continue;
+ }
+ if (val.intval == POWER_SUPPLY_STATUS_FULL ||
+ val.intval == POWER_SUPPLY_STATUS_DISCHARGING ||
+ val.intval == POWER_SUPPLY_STATUS_NOT_CHARGING)
+ continue;
+
+ /* Then, this is charging. */
+ charging = true;
+ break;
+ }
+
+ return charging;
+}
+
+/**
+ * is_polling_required - Return true if need to continue polling for this CM.
+ * @cm: the Charger Manager representing the battery.
+ */
+static bool is_polling_required(struct charger_manager *cm)
+{
+ switch (cm->desc->polling_mode) {
+ case CM_POLL_DISABLE:
+ return false;
+ case CM_POLL_ALWAYS:
+ return true;
+ case CM_POLL_EXTERNAL_POWER_ONLY:
+ return is_ext_pwr_online(cm);
+ case CM_POLL_CHARGING_ONLY:
+ return is_charging(cm);
+ default:
+ dev_warn(cm->dev, "Incorrect polling_mode (%d)\n",
+ cm->desc->polling_mode);
+ }
+
+ return false;
+}
+
+/**
+ * try_charger_enable - Enable/Disable chargers altogether
+ * @cm: the Charger Manager representing the battery.
+ * @enable: true: enable / false: disable
+ *
+ * Note that Charger Manager keeps the charger enabled regardless whether
+ * the charger is charging or not (because battery is full or no external
+ * power source exists) except when CM needs to disable chargers forcibly
+ * bacause of emergency causes; when the battery is overheated or too cold.
+ */
+static int try_charger_enable(struct charger_manager *cm, bool enable)
+{
+ int err = 0, i;
+ struct charger_desc *desc = cm->desc;
+
+ /* Ignore if it's redundent command */
+ if (enable == cm->charger_enabled)
+ return 0;
+
+ if (enable) {
+ if (cm->emergency_stop)
+ return -EAGAIN;
+ err = regulator_bulk_enable(desc->num_charger_regulators,
+ desc->charger_regulators);
+ } else {
+ /*
+ * Abnormal battery state - Stop charging forcibly,
+ * even if charger was enabled at the other places
+ */
+ err = regulator_bulk_disable(desc->num_charger_regulators,
+ desc->charger_regulators);
+
+ for (i = 0; i < desc->num_charger_regulators; i++) {
+ if (regulator_is_enabled(
+ desc->charger_regulators[i].consumer)) {
+ regulator_force_disable(
+ desc->charger_regulators[i].consumer);
+ dev_warn(cm->dev,
+ "Disable regulator(%s) forcibly.\n",
+ desc->charger_regulators[i].supply);
+ }
+ }
+ }
+
+ if (!err)
+ cm->charger_enabled = enable;
+
+ return err;
+}
+
+/**
+ * uevent_notify - Let users know something has changed.
+ * @cm: the Charger Manager representing the battery.
+ * @event: the event string.
+ *
+ * If @event is null, it implies that uevent_notify is called
+ * by resume function. When called in the resume function, cm_suspended
+ * should be already reset to false in order to let uevent_notify
+ * notify the recent event during the suspend to users. While
+ * suspended, uevent_notify does not notify users, but tracks
+ * events so that uevent_notify can notify users later after resumed.
+ */
+static void uevent_notify(struct charger_manager *cm, const char *event)
+{
+ static char env_str[UEVENT_BUF_SIZE + 1] = "";
+ static char env_str_save[UEVENT_BUF_SIZE + 1] = "";
+
+ if (cm_suspended) {
+ /* Nothing in suspended-event buffer */
+ if (env_str_save[0] == 0) {
+ if (!strncmp(env_str, event, UEVENT_BUF_SIZE))
+ return; /* status not changed */
+ strncpy(env_str_save, event, UEVENT_BUF_SIZE);
+ return;
+ }
+
+ if (!strncmp(env_str_save, event, UEVENT_BUF_SIZE))
+ return; /* Duplicated. */
+ strncpy(env_str_save, event, UEVENT_BUF_SIZE);
+ return;
+ }
+
+ if (event == NULL) {
+ /* No messages pending */
+ if (!env_str_save[0])
+ return;
+
+ strncpy(env_str, env_str_save, UEVENT_BUF_SIZE);
+ kobject_uevent(&cm->dev->kobj, KOBJ_CHANGE);
+ env_str_save[0] = 0;
+
+ return;
+ }
+
+ /* status not changed */
+ if (!strncmp(env_str, event, UEVENT_BUF_SIZE))
+ return;
+
+ /* save the status and notify the update */
+ strncpy(env_str, event, UEVENT_BUF_SIZE);
+ kobject_uevent(&cm->dev->kobj, KOBJ_CHANGE);
+
+ dev_info(cm->dev, "%s", event);
+}
+
+/**
+ * _cm_monitor - Monitor the temperature and return true for exceptions.
+ * @cm: the Charger Manager representing the battery.
+ *
+ * Returns true if there is an event to notify for the battery.
+ * (True if the status of "emergency_stop" changes)
+ */
+static bool _cm_monitor(struct charger_manager *cm)
+{
+ struct charger_desc *desc = cm->desc;
+ int temp = desc->temperature_out_of_range(&cm->last_temp_mC);
+
+ dev_dbg(cm->dev, "monitoring (%2.2d.%3.3dC)\n",
+ cm->last_temp_mC / 1000, cm->last_temp_mC % 1000);
+
+ /* It has been stopped or charging already */
+ if (!!temp == !!cm->emergency_stop)
+ return false;
+
+ if (temp) {
+ cm->emergency_stop = temp;
+ if (!try_charger_enable(cm, false)) {
+ if (temp > 0)
+ uevent_notify(cm, "OVERHEAT");
+ else
+ uevent_notify(cm, "COLD");
+ }
+ } else {
+ cm->emergency_stop = 0;
+ if (!try_charger_enable(cm, true))
+ uevent_notify(cm, "CHARGING");
+ }
+
+ return true;
+}
+
+/**
+ * cm_monitor - Monitor every battery.
+ *
+ * Returns true if there is an event to notify from any of the batteries.
+ * (True if the status of "emergency_stop" changes)
+ */
+static bool cm_monitor(void)
+{
+ bool stop = false;
+ struct charger_manager *cm;
+
+ mutex_lock(&cm_list_mtx);
+
+ list_for_each_entry(cm, &cm_list, entry) {
+ if (_cm_monitor(cm))
+ stop = true;
+ }
+
+ mutex_unlock(&cm_list_mtx);
+
+ return stop;
+}
+
+static int charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct charger_manager *cm = container_of(psy,
+ struct charger_manager, charger_psy);
+ struct charger_desc *desc = cm->desc;
+ int ret = 0;
+ int uV;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (is_charging(cm))
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else if (is_ext_pwr_online(cm))
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ if (cm->emergency_stop > 0)
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else if (cm->emergency_stop < 0)
+ val->intval = POWER_SUPPLY_HEALTH_COLD;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ if (is_batt_present(cm))
+ val->intval = 1;
+ else
+ val->intval = 0;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = get_batt_uV(cm, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CURRENT_NOW, val);
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ /* in thenth of centigrade */
+ if (cm->last_temp_mC == INT_MIN)
+ desc->temperature_out_of_range(&cm->last_temp_mC);
+ val->intval = cm->last_temp_mC / 100;
+ if (!desc->measure_battery_temp)
+ ret = -ENODEV;
+ break;
+ case POWER_SUPPLY_PROP_TEMP_AMBIENT:
+ /* in thenth of centigrade */
+ if (cm->last_temp_mC == INT_MIN)
+ desc->temperature_out_of_range(&cm->last_temp_mC);
+ val->intval = cm->last_temp_mC / 100;
+ if (desc->measure_battery_temp)
+ ret = -ENODEV;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ if (!cm->fuel_gauge) {
+ ret = -ENODEV;
+ break;
+ }
+
+ if (!is_batt_present(cm)) {
+ /* There is no battery. Assume 100% */
+ val->intval = 100;
+ break;
+ }
+
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CAPACITY, val);
+ if (ret)
+ break;
+
+ if (val->intval > 100) {
+ val->intval = 100;
+ break;
+ }
+ if (val->intval < 0)
+ val->intval = 0;
+
+ /* Do not adjust SOC when charging: voltage is overrated */
+ if (is_charging(cm))
+ break;
+
+ /*
+ * If the capacity value is inconsistent, calibrate it base on
+ * the battery voltage values and the thresholds given as desc
+ */
+ ret = get_batt_uV(cm, &uV);
+ if (ret) {
+ /* Voltage information not available. No calibration */
+ ret = 0;
+ break;
+ }
+
+ if (desc->fullbatt_uV > 0 && uV >= desc->fullbatt_uV &&
+ !is_charging(cm)) {
+ val->intval = 100;
+ break;
+ }
+
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ if (is_ext_pwr_online(cm))
+ val->intval = 1;
+ else
+ val->intval = 0;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ if (cm->fuel_gauge) {
+ if (cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CHARGE_FULL, val) == 0)
+ break;
+ }
+
+ if (is_ext_pwr_online(cm)) {
+ /* Not full if it's charging. */
+ if (is_charging(cm)) {
+ val->intval = 0;
+ break;
+ }
+ /*
+ * Full if it's powered but not charging andi
+ * not forced stop by emergency
+ */
+ if (!cm->emergency_stop) {
+ val->intval = 1;
+ break;
+ }
+ }
+
+ /* Full if it's over the fullbatt voltage */
+ ret = get_batt_uV(cm, &uV);
+ if (!ret && desc->fullbatt_uV > 0 && uV >= desc->fullbatt_uV &&
+ !is_charging(cm)) {
+ val->intval = 1;
+ break;
+ }
+
+ /* Full if the cap is 100 */
+ if (cm->fuel_gauge) {
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CAPACITY, val);
+ if (!ret && val->intval >= 100 && !is_charging(cm)) {
+ val->intval = 1;
+ break;
+ }
+ }
+
+ val->intval = 0;
+ ret = 0;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ if (is_charging(cm)) {
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ val);
+ if (ret) {
+ val->intval = 1;
+ ret = 0;
+ } else {
+ /* If CHARGE_NOW is supplied, use it */
+ val->intval = (val->intval > 0) ?
+ val->intval : 1;
+ }
+ } else {
+ val->intval = 0;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+ return ret;
+}
+
+#define NUM_CHARGER_PSY_OPTIONAL (4)
+static enum power_supply_property default_charger_props[] = {
+ /* Guaranteed to provide */
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ /*
+ * Optional properties are:
+ * POWER_SUPPLY_PROP_CHARGE_NOW,
+ * POWER_SUPPLY_PROP_CURRENT_NOW,
+ * POWER_SUPPLY_PROP_TEMP, and
+ * POWER_SUPPLY_PROP_TEMP_AMBIENT,
+ */
+};
+
+static struct power_supply psy_default = {
+ .name = "battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = default_charger_props,
+ .num_properties = ARRAY_SIZE(default_charger_props),
+ .get_property = charger_get_property,
+};
+
+/**
+ * cm_setup_timer - For in-suspend monitoring setup wakeup alarm
+ * for suspend_again.
+ *
+ * Returns true if the alarm is set for Charger Manager to use.
+ * Returns false if
+ * cm_setup_timer fails to set an alarm,
+ * cm_setup_timer does not need to set an alarm for Charger Manager,
+ * or an alarm previously configured is to be used.
+ */
+static bool cm_setup_timer(void)
+{
+ struct charger_manager *cm;
+ unsigned int wakeup_ms = UINT_MAX;
+ bool ret = false;
+
+ mutex_lock(&cm_list_mtx);
+
+ list_for_each_entry(cm, &cm_list, entry) {
+ /* Skip if polling is not required for this CM */
+ if (!is_polling_required(cm) && !cm->emergency_stop)
+ continue;
+ if (cm->desc->polling_interval_ms == 0)
+ continue;
+ CM_MIN_VALID(wakeup_ms, cm->desc->polling_interval_ms);
+ }
+
+ mutex_unlock(&cm_list_mtx);
+
+ if (wakeup_ms < UINT_MAX && wakeup_ms > 0) {
+ pr_info("Charger Manager wakeup timer: %u ms.\n", wakeup_ms);
+ if (rtc_dev) {
+ struct rtc_wkalrm tmp;
+ unsigned long time, now;
+ unsigned long add = DIV_ROUND_UP(wakeup_ms, 1000);
+
+ /*
+ * Set alarm with the polling interval (wakeup_ms)
+ * except when rtc_wkalarm_save comes first.
+ * However, the alarm time should be NOW +
+ * CM_RTC_SMALL or later.
+ */
+ tmp.enabled = 1;
+ rtc_read_time(rtc_dev, &tmp.time);
+ rtc_tm_to_time(&tmp.time, &now);
+ if (add < CM_RTC_SMALL)
+ add = CM_RTC_SMALL;
+ time = now + add;
+
+ ret = true;
+
+ if (rtc_wkalarm_save.enabled &&
+ rtc_wkalarm_save_time &&
+ rtc_wkalarm_save_time < time) {
+ if (rtc_wkalarm_save_time < now + CM_RTC_SMALL)
+ time = now + CM_RTC_SMALL;
+ else
+ time = rtc_wkalarm_save_time;
+
+ /* The timer is not appointed by CM */
+ ret = false;
+ }
+
+ pr_info("Waking up after %lu secs.\n",
+ time - now);
+
+ rtc_time_to_tm(time, &tmp.time);
+ rtc_set_alarm(rtc_dev, &tmp);
+ cm_suspend_duration_ms += wakeup_ms;
+ return ret;
+ }
+ }
+
+ if (rtc_dev)
+ rtc_set_alarm(rtc_dev, &rtc_wkalarm_save);
+ return false;
+}
+
+/**
+ * cm_suspend_again - Determine whether suspend again or not
+ *
+ * Returns true if the system should be suspended again
+ * Returns false if the system should be woken up
+ */
+bool cm_suspend_again(void)
+{
+ struct charger_manager *cm;
+ bool ret = false;
+
+ if (!g_desc || !g_desc->rtc_only_wakeup || !g_desc->rtc_only_wakeup() ||
+ !cm_rtc_set)
+ return false;
+
+ if (cm_monitor())
+ goto out;
+
+ ret = true;
+ mutex_lock(&cm_list_mtx);
+ list_for_each_entry(cm, &cm_list, entry) {
+ if (cm->status_save_ext_pwr_inserted != is_ext_pwr_online(cm) ||
+ cm->status_save_batt != is_batt_present(cm)) {
+ ret = false;
+ break;
+ }
+ }
+ mutex_unlock(&cm_list_mtx);
+
+ cm_rtc_set = cm_setup_timer();
+out:
+ /* It's about the time when the non-CM appointed timer goes off */
+ if (rtc_wkalarm_save.enabled) {
+ unsigned long now;
+ struct rtc_time tmp;
+
+ rtc_read_time(rtc_dev, &tmp);
+ rtc_tm_to_time(&tmp, &now);
+
+ if (rtc_wkalarm_save_time &&
+ now + CM_RTC_SMALL >= rtc_wkalarm_save_time)
+ return false;
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(cm_suspend_again);
+
+/**
+ * setup_charger_manager - initialize charger_global_desc data
+ * @gd: pointer to instance of charger_global_desc
+ */
+int setup_charger_manager(struct charger_global_desc *gd)
+{
+ if (!gd)
+ return -EINVAL;
+
+ if (rtc_dev)
+ rtc_class_close(rtc_dev);
+ rtc_dev = NULL;
+ g_desc = NULL;
+
+ if (!gd->rtc_only_wakeup) {
+ pr_err("The callback rtc_only_wakeup is not given.\n");
+ return -EINVAL;
+ }
+
+ if (gd->rtc_name) {
+ rtc_dev = rtc_class_open(gd->rtc_name);
+ if (IS_ERR_OR_NULL(rtc_dev)) {
+ rtc_dev = NULL;
+ /* Retry at probe. RTC may be not registered yet */
+ }
+ } else {
+ pr_warn("No wakeup timer is given for charger manager."
+ "In-suspend monitoring won't work.\n");
+ }
+
+ g_desc = gd;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(setup_charger_manager);
+
+static int charger_manager_probe(struct platform_device *pdev)
+{
+ struct charger_desc *desc = dev_get_platdata(&pdev->dev);
+ struct charger_manager *cm;
+ int ret = 0, i = 0;
+ union power_supply_propval val;
+
+ if (g_desc && !rtc_dev && g_desc->rtc_name) {
+ rtc_dev = rtc_class_open(g_desc->rtc_name);
+ if (IS_ERR_OR_NULL(rtc_dev)) {
+ rtc_dev = NULL;
+ dev_err(&pdev->dev, "Cannot get RTC %s.\n",
+ g_desc->rtc_name);
+ ret = -ENODEV;
+ goto err_alloc;
+ }
+ }
+
+ if (!desc) {
+ dev_err(&pdev->dev, "No platform data (desc) found.\n");
+ ret = -ENODEV;
+ goto err_alloc;
+ }
+
+ cm = kzalloc(sizeof(struct charger_manager), GFP_KERNEL);
+ if (!cm) {
+ dev_err(&pdev->dev, "Cannot allocate memory.\n");
+ ret = -ENOMEM;
+ goto err_alloc;
+ }
+
+ /* Basic Values. Unspecified are Null or 0 */
+ cm->dev = &pdev->dev;
+ cm->desc = kzalloc(sizeof(struct charger_desc), GFP_KERNEL);
+ if (!cm->desc) {
+ dev_err(&pdev->dev, "Cannot allocate memory.\n");
+ ret = -ENOMEM;
+ goto err_alloc_desc;
+ }
+ memcpy(cm->desc, desc, sizeof(struct charger_desc));
+ cm->last_temp_mC = INT_MIN; /* denotes "unmeasured, yet" */
+
+ if (!desc->charger_regulators || desc->num_charger_regulators < 1) {
+ ret = -EINVAL;
+ dev_err(&pdev->dev, "charger_regulators undefined.\n");
+ goto err_no_charger;
+ }
+
+ if (!desc->psy_charger_stat || !desc->psy_charger_stat[0]) {
+ dev_err(&pdev->dev, "No power supply defined.\n");
+ ret = -EINVAL;
+ goto err_no_charger_stat;
+ }
+
+ if (!desc->psy_fuel_gauge) {
+ dev_err(&pdev->dev, "No fuel gauge power supply defined\n");
+ return -EINVAL;
+ }
+
+ /* Counting index only */
+ while (desc->psy_charger_stat[i])
+ i++;
+
+ cm->charger_stat = kzalloc(sizeof(struct power_supply *) * (i + 1),
+ GFP_KERNEL);
+ if (!cm->charger_stat) {
+ ret = -ENOMEM;
+ goto err_no_charger_stat;
+ }
+
+ for (i = 0; desc->psy_charger_stat[i]; i++) {
+ cm->charger_stat[i] = power_supply_get_by_name(
+ desc->psy_charger_stat[i]);
+ if (!cm->charger_stat[i]) {
+ dev_err(&pdev->dev, "Cannot find power supply "
+ "\"%s\"\n",
+ desc->psy_charger_stat[i]);
+ ret = -ENODEV;
+ goto err_chg_stat;
+ }
+ }
+
+ cm->fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge);
+ if (!cm->fuel_gauge) {
+ dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n",
+ desc->psy_fuel_gauge);
+ ret = -ENODEV;
+ goto err_chg_stat;
+ }
+
+ if (desc->polling_interval_ms == 0 ||
+ msecs_to_jiffies(desc->polling_interval_ms) <= CM_JIFFIES_SMALL) {
+ dev_err(&pdev->dev, "polling_interval_ms is too small\n");
+ ret = -EINVAL;
+ goto err_chg_stat;
+ }
+
+ if (!desc->temperature_out_of_range) {
+ dev_err(&pdev->dev, "there is no temperature_out_of_range\n");
+ ret = -EINVAL;
+ goto err_chg_stat;
+ }
+
+ platform_set_drvdata(pdev, cm);
+
+ memcpy(&cm->charger_psy, &psy_default, sizeof(psy_default));
+
+ if (!desc->psy_name) {
+ strncpy(cm->psy_name_buf, psy_default.name, PSY_NAME_MAX);
+ } else {
+ strncpy(cm->psy_name_buf, desc->psy_name, PSY_NAME_MAX);
+ }
+ cm->charger_psy.name = cm->psy_name_buf;
+
+ /* Allocate for psy properties because they may vary */
+ cm->charger_psy.properties = kzalloc(sizeof(enum power_supply_property)
+ * (ARRAY_SIZE(default_charger_props) +
+ NUM_CHARGER_PSY_OPTIONAL),
+ GFP_KERNEL);
+ if (!cm->charger_psy.properties) {
+ dev_err(&pdev->dev, "Cannot allocate for psy properties.\n");
+ ret = -ENOMEM;
+ goto err_chg_stat;
+ }
+ memcpy(cm->charger_psy.properties, default_charger_props,
+ sizeof(enum power_supply_property) *
+ ARRAY_SIZE(default_charger_props));
+ cm->charger_psy.num_properties = psy_default.num_properties;
+
+ /* Find which optional psy-properties are available */
+ if (!cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CHARGE_NOW, &val)) {
+ cm->charger_psy.properties[cm->charger_psy.num_properties] =
+ POWER_SUPPLY_PROP_CHARGE_NOW;
+ cm->charger_psy.num_properties++;
+ }
+ if (!cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ &val)) {
+ cm->charger_psy.properties[cm->charger_psy.num_properties] =
+ POWER_SUPPLY_PROP_CURRENT_NOW;
+ cm->charger_psy.num_properties++;
+ }
+
+ if (desc->measure_battery_temp) {
+ cm->charger_psy.properties[cm->charger_psy.num_properties] =
+ POWER_SUPPLY_PROP_TEMP;
+ cm->charger_psy.num_properties++;
+ } else {
+ cm->charger_psy.properties[cm->charger_psy.num_properties] =
+ POWER_SUPPLY_PROP_TEMP_AMBIENT;
+ cm->charger_psy.num_properties++;
+ }
+
+ ret = power_supply_register(NULL, &cm->charger_psy);
+ if (ret) {
+ dev_err(&pdev->dev, "Cannot register charger-manager with"
+ " name \"%s\".\n", cm->charger_psy.name);
+ goto err_register;
+ }
+
+ ret = regulator_bulk_get(&pdev->dev, desc->num_charger_regulators,
+ desc->charger_regulators);
+ if (ret) {
+ dev_err(&pdev->dev, "Cannot get charger regulators.\n");
+ goto err_bulk_get;
+ }
+
+ ret = try_charger_enable(cm, true);
+ if (ret) {
+ dev_err(&pdev->dev, "Cannot enable charger regulators\n");
+ goto err_chg_enable;
+ }
+
+ /* Add to the list */
+ mutex_lock(&cm_list_mtx);
+ list_add(&cm->entry, &cm_list);
+ mutex_unlock(&cm_list_mtx);
+
+ return 0;
+
+err_chg_enable:
+ regulator_bulk_free(desc->num_charger_regulators,
+ desc->charger_regulators);
+err_bulk_get:
+ power_supply_unregister(&cm->charger_psy);
+err_register:
+ kfree(cm->charger_psy.properties);
+err_chg_stat:
+ kfree(cm->charger_stat);
+err_no_charger_stat:
+err_no_charger:
+ kfree(cm->desc);
+err_alloc_desc:
+ kfree(cm);
+err_alloc:
+ return ret;
+}
+
+static int __devexit charger_manager_remove(struct platform_device *pdev)
+{
+ struct charger_manager *cm = platform_get_drvdata(pdev);
+ struct charger_desc *desc = cm->desc;
+
+ /* Remove from the list */
+ mutex_lock(&cm_list_mtx);
+ list_del(&cm->entry);
+ mutex_unlock(&cm_list_mtx);
+
+ regulator_bulk_free(desc->num_charger_regulators,
+ desc->charger_regulators);
+ power_supply_unregister(&cm->charger_psy);
+ kfree(cm->charger_psy.properties);
+ kfree(cm->charger_stat);
+ kfree(cm->desc);
+ kfree(cm);
+
+ return 0;
+}
+
+static const struct platform_device_id charger_manager_id[] = {
+ { "charger-manager", 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, charger_manager_id);
+
+static int cm_suspend_prepare(struct device *dev)
+{
+ struct charger_manager *cm = dev_get_drvdata(dev);
+
+ if (!cm_suspended) {
+ if (rtc_dev) {
+ struct rtc_time tmp;
+ unsigned long now;
+
+ rtc_read_alarm(rtc_dev, &rtc_wkalarm_save);
+ rtc_read_time(rtc_dev, &tmp);
+
+ if (rtc_wkalarm_save.enabled) {
+ rtc_tm_to_time(&rtc_wkalarm_save.time,
+ &rtc_wkalarm_save_time);
+ rtc_tm_to_time(&tmp, &now);
+ if (now > rtc_wkalarm_save_time)
+ rtc_wkalarm_save_time = 0;
+ } else {
+ rtc_wkalarm_save_time = 0;
+ }
+ }
+ cm_suspended = true;
+ }
+
+ cm->status_save_ext_pwr_inserted = is_ext_pwr_online(cm);
+ cm->status_save_batt = is_batt_present(cm);
+
+ if (!cm_rtc_set) {
+ cm_suspend_duration_ms = 0;
+ cm_rtc_set = cm_setup_timer();
+ }
+
+ return 0;
+}
+
+static void cm_suspend_complete(struct device *dev)
+{
+ struct charger_manager *cm = dev_get_drvdata(dev);
+
+ if (cm_suspended) {
+ if (rtc_dev) {
+ struct rtc_wkalrm tmp;
+
+ rtc_read_alarm(rtc_dev, &tmp);
+ rtc_wkalarm_save.pending = tmp.pending;
+ rtc_set_alarm(rtc_dev, &rtc_wkalarm_save);
+ }
+ cm_suspended = false;
+ cm_rtc_set = false;
+ }
+
+ uevent_notify(cm, NULL);
+}
+
+static const struct dev_pm_ops charger_manager_pm = {
+ .prepare = cm_suspend_prepare,
+ .complete = cm_suspend_complete,
+};
+
+static struct platform_driver charger_manager_driver = {
+ .driver = {
+ .name = "charger-manager",
+ .owner = THIS_MODULE,
+ .pm = &charger_manager_pm,
+ },
+ .probe = charger_manager_probe,
+ .remove = __devexit_p(charger_manager_remove),
+ .id_table = charger_manager_id,
+};
+
+static int __init charger_manager_init(void)
+{
+ return platform_driver_register(&charger_manager_driver);
+}
+late_initcall(charger_manager_init);
+
+static void __exit charger_manager_cleanup(void)
+{
+ platform_driver_unregister(&charger_manager_driver);
+}
+module_exit(charger_manager_cleanup);
+
+MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
+MODULE_DESCRIPTION("Charger Manager");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/collie_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/collie_battery.c
new file mode 100644
index 0000000..74c6b23
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/collie_battery.c
@@ -0,0 +1,390 @@
+/*
+ * Battery and Power Management code for the Sharp SL-5x00
+ *
+ * Copyright (C) 2009 Thomas Kunze
+ *
+ * based on tosa_battery.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/power_supply.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+#include <linux/mfd/ucb1x00.h>
+
+#include <asm/mach/sharpsl_param.h>
+#include <asm/mach-types.h>
+#include <mach/collie.h>
+
+static DEFINE_MUTEX(bat_lock); /* protects gpio pins */
+static struct work_struct bat_work;
+static struct ucb1x00 *ucb;
+
+struct collie_bat {
+ int status;
+ struct power_supply psy;
+ int full_chrg;
+
+ struct mutex work_lock; /* protects data */
+
+ bool (*is_present)(struct collie_bat *bat);
+ int gpio_full;
+ int gpio_charge_on;
+
+ int technology;
+
+ int gpio_bat;
+ int adc_bat;
+ int adc_bat_divider;
+ int bat_max;
+ int bat_min;
+
+ int gpio_temp;
+ int adc_temp;
+ int adc_temp_divider;
+};
+
+static struct collie_bat collie_bat_main;
+
+static unsigned long collie_read_bat(struct collie_bat *bat)
+{
+ unsigned long value = 0;
+
+ if (bat->gpio_bat < 0 || bat->adc_bat < 0)
+ return 0;
+ mutex_lock(&bat_lock);
+ gpio_set_value(bat->gpio_bat, 1);
+ msleep(5);
+ ucb1x00_adc_enable(ucb);
+ value = ucb1x00_adc_read(ucb, bat->adc_bat, UCB_SYNC);
+ ucb1x00_adc_disable(ucb);
+ gpio_set_value(bat->gpio_bat, 0);
+ mutex_unlock(&bat_lock);
+ value = value * 1000000 / bat->adc_bat_divider;
+
+ return value;
+}
+
+static unsigned long collie_read_temp(struct collie_bat *bat)
+{
+ unsigned long value = 0;
+ if (bat->gpio_temp < 0 || bat->adc_temp < 0)
+ return 0;
+
+ mutex_lock(&bat_lock);
+ gpio_set_value(bat->gpio_temp, 1);
+ msleep(5);
+ ucb1x00_adc_enable(ucb);
+ value = ucb1x00_adc_read(ucb, bat->adc_temp, UCB_SYNC);
+ ucb1x00_adc_disable(ucb);
+ gpio_set_value(bat->gpio_temp, 0);
+ mutex_unlock(&bat_lock);
+
+ value = value * 10000 / bat->adc_temp_divider;
+
+ return value;
+}
+
+static int collie_bat_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ struct collie_bat *bat = container_of(psy, struct collie_bat, psy);
+
+ if (bat->is_present && !bat->is_present(bat)
+ && psp != POWER_SUPPLY_PROP_PRESENT) {
+ return -ENODEV;
+ }
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = bat->status;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = bat->technology;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = collie_read_bat(bat);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ if (bat->full_chrg == -1)
+ val->intval = bat->bat_max;
+ else
+ val->intval = bat->full_chrg;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ val->intval = bat->bat_max;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = bat->bat_min;
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = collie_read_temp(bat);
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = bat->is_present ? bat->is_present(bat) : 1;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static void collie_bat_external_power_changed(struct power_supply *psy)
+{
+ schedule_work(&bat_work);
+}
+
+static irqreturn_t collie_bat_gpio_isr(int irq, void *data)
+{
+ pr_info("collie_bat_gpio irq\n");
+ schedule_work(&bat_work);
+ return IRQ_HANDLED;
+}
+
+static void collie_bat_update(struct collie_bat *bat)
+{
+ int old;
+ struct power_supply *psy = &bat->psy;
+
+ mutex_lock(&bat->work_lock);
+
+ old = bat->status;
+
+ if (bat->is_present && !bat->is_present(bat)) {
+ printk(KERN_NOTICE "%s not present\n", psy->name);
+ bat->status = POWER_SUPPLY_STATUS_UNKNOWN;
+ bat->full_chrg = -1;
+ } else if (power_supply_am_i_supplied(psy)) {
+ if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) {
+ gpio_set_value(bat->gpio_charge_on, 1);
+ mdelay(15);
+ }
+
+ if (gpio_get_value(bat->gpio_full)) {
+ if (old == POWER_SUPPLY_STATUS_CHARGING ||
+ bat->full_chrg == -1)
+ bat->full_chrg = collie_read_bat(bat);
+
+ gpio_set_value(bat->gpio_charge_on, 0);
+ bat->status = POWER_SUPPLY_STATUS_FULL;
+ } else {
+ gpio_set_value(bat->gpio_charge_on, 1);
+ bat->status = POWER_SUPPLY_STATUS_CHARGING;
+ }
+ } else {
+ gpio_set_value(bat->gpio_charge_on, 0);
+ bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ if (old != bat->status)
+ power_supply_changed(psy);
+
+ mutex_unlock(&bat->work_lock);
+}
+
+static void collie_bat_work(struct work_struct *work)
+{
+ collie_bat_update(&collie_bat_main);
+}
+
+
+static enum power_supply_property collie_bat_main_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_TEMP,
+};
+
+static enum power_supply_property collie_bat_bu_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_PRESENT,
+};
+
+static struct collie_bat collie_bat_main = {
+ .status = POWER_SUPPLY_STATUS_DISCHARGING,
+ .full_chrg = -1,
+ .psy = {
+ .name = "main-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = collie_bat_main_props,
+ .num_properties = ARRAY_SIZE(collie_bat_main_props),
+ .get_property = collie_bat_get_property,
+ .external_power_changed = collie_bat_external_power_changed,
+ .use_for_apm = 1,
+ },
+
+ .gpio_full = COLLIE_GPIO_CO,
+ .gpio_charge_on = COLLIE_GPIO_CHARGE_ON,
+
+ .technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
+
+ .gpio_bat = COLLIE_GPIO_MBAT_ON,
+ .adc_bat = UCB_ADC_INP_AD1,
+ .adc_bat_divider = 155,
+ .bat_max = 4310000,
+ .bat_min = 1551 * 1000000 / 414,
+
+ .gpio_temp = COLLIE_GPIO_TMP_ON,
+ .adc_temp = UCB_ADC_INP_AD0,
+ .adc_temp_divider = 10000,
+};
+
+static struct collie_bat collie_bat_bu = {
+ .status = POWER_SUPPLY_STATUS_UNKNOWN,
+ .full_chrg = -1,
+
+ .psy = {
+ .name = "backup-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = collie_bat_bu_props,
+ .num_properties = ARRAY_SIZE(collie_bat_bu_props),
+ .get_property = collie_bat_get_property,
+ .external_power_changed = collie_bat_external_power_changed,
+ },
+
+ .gpio_full = -1,
+ .gpio_charge_on = -1,
+
+ .technology = POWER_SUPPLY_TECHNOLOGY_LiMn,
+
+ .gpio_bat = COLLIE_GPIO_BBAT_ON,
+ .adc_bat = UCB_ADC_INP_AD1,
+ .adc_bat_divider = 155,
+ .bat_max = 3000000,
+ .bat_min = 1900000,
+
+ .gpio_temp = -1,
+ .adc_temp = -1,
+ .adc_temp_divider = -1,
+};
+
+static struct gpio collie_batt_gpios[] = {
+ { COLLIE_GPIO_CO, GPIOF_IN, "main battery full" },
+ { COLLIE_GPIO_MAIN_BAT_LOW, GPIOF_IN, "main battery low" },
+ { COLLIE_GPIO_CHARGE_ON, GPIOF_OUT_INIT_LOW, "main charge on" },
+ { COLLIE_GPIO_MBAT_ON, GPIOF_OUT_INIT_LOW, "main battery" },
+ { COLLIE_GPIO_TMP_ON, GPIOF_OUT_INIT_LOW, "main battery temp" },
+ { COLLIE_GPIO_BBAT_ON, GPIOF_OUT_INIT_LOW, "backup battery" },
+};
+
+#ifdef CONFIG_PM
+static int collie_bat_suspend(struct ucb1x00_dev *dev, pm_message_t state)
+{
+ /* flush all pending status updates */
+ flush_work_sync(&bat_work);
+ return 0;
+}
+
+static int collie_bat_resume(struct ucb1x00_dev *dev)
+{
+ /* things may have changed while we were away */
+ schedule_work(&bat_work);
+ return 0;
+}
+#else
+#define collie_bat_suspend NULL
+#define collie_bat_resume NULL
+#endif
+
+static int __devinit collie_bat_probe(struct ucb1x00_dev *dev)
+{
+ int ret;
+
+ if (!machine_is_collie())
+ return -ENODEV;
+
+ ucb = dev->ucb;
+
+ ret = gpio_request_array(collie_batt_gpios,
+ ARRAY_SIZE(collie_batt_gpios));
+ if (ret)
+ return ret;
+
+ mutex_init(&collie_bat_main.work_lock);
+
+ INIT_WORK(&bat_work, collie_bat_work);
+
+ ret = power_supply_register(&dev->ucb->dev, &collie_bat_main.psy);
+ if (ret)
+ goto err_psy_reg_main;
+ ret = power_supply_register(&dev->ucb->dev, &collie_bat_bu.psy);
+ if (ret)
+ goto err_psy_reg_bu;
+
+ ret = request_irq(gpio_to_irq(COLLIE_GPIO_CO),
+ collie_bat_gpio_isr,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "main full", &collie_bat_main);
+ if (!ret) {
+ schedule_work(&bat_work);
+ return 0;
+ }
+ power_supply_unregister(&collie_bat_bu.psy);
+err_psy_reg_bu:
+ power_supply_unregister(&collie_bat_main.psy);
+err_psy_reg_main:
+
+ /* see comment in collie_bat_remove */
+ cancel_work_sync(&bat_work);
+ gpio_free_array(collie_batt_gpios, ARRAY_SIZE(collie_batt_gpios));
+ return ret;
+}
+
+static void __devexit collie_bat_remove(struct ucb1x00_dev *dev)
+{
+ free_irq(gpio_to_irq(COLLIE_GPIO_CO), &collie_bat_main);
+
+ power_supply_unregister(&collie_bat_bu.psy);
+ power_supply_unregister(&collie_bat_main.psy);
+
+ /*
+ * Now cancel the bat_work. We won't get any more schedules,
+ * since all sources (isr and external_power_changed) are
+ * unregistered now.
+ */
+ cancel_work_sync(&bat_work);
+ gpio_free_array(collie_batt_gpios, ARRAY_SIZE(collie_batt_gpios));
+}
+
+static struct ucb1x00_driver collie_bat_driver = {
+ .add = collie_bat_probe,
+ .remove = __devexit_p(collie_bat_remove),
+ .suspend = collie_bat_suspend,
+ .resume = collie_bat_resume,
+};
+
+static int __init collie_bat_init(void)
+{
+ return ucb1x00_register_driver(&collie_bat_driver);
+}
+
+static void __exit collie_bat_exit(void)
+{
+ ucb1x00_unregister_driver(&collie_bat_driver);
+}
+
+module_init(collie_bat_init);
+module_exit(collie_bat_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Thomas Kunze");
+MODULE_DESCRIPTION("Collie battery driver");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/da9030_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/da9030_battery.c
new file mode 100644
index 0000000..3fd3e95
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/da9030_battery.c
@@ -0,0 +1,595 @@
+/*
+ * Battery charger driver for Dialog Semiconductor DA9030
+ *
+ * Copyright (C) 2008 Compulab, Ltd.
+ * Mike Rapoport <mike@compulab.co.il>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/workqueue.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/mfd/da903x.h>
+
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+#define DA9030_FAULT_LOG 0x0a
+#define DA9030_FAULT_LOG_OVER_TEMP (1 << 7)
+#define DA9030_FAULT_LOG_VBAT_OVER (1 << 4)
+
+#define DA9030_CHARGE_CONTROL 0x28
+#define DA9030_CHRG_CHARGER_ENABLE (1 << 7)
+
+#define DA9030_ADC_MAN_CONTROL 0x30
+#define DA9030_ADC_TBATREF_ENABLE (1 << 5)
+#define DA9030_ADC_LDO_INT_ENABLE (1 << 4)
+
+#define DA9030_ADC_AUTO_CONTROL 0x31
+#define DA9030_ADC_TBAT_ENABLE (1 << 5)
+#define DA9030_ADC_VBAT_IN_TXON (1 << 4)
+#define DA9030_ADC_VCH_ENABLE (1 << 3)
+#define DA9030_ADC_ICH_ENABLE (1 << 2)
+#define DA9030_ADC_VBAT_ENABLE (1 << 1)
+#define DA9030_ADC_AUTO_SLEEP_ENABLE (1 << 0)
+
+#define DA9030_VBATMON 0x32
+#define DA9030_VBATMONTXON 0x33
+#define DA9030_TBATHIGHP 0x34
+#define DA9030_TBATHIGHN 0x35
+#define DA9030_TBATLOW 0x36
+
+#define DA9030_VBAT_RES 0x41
+#define DA9030_VBATMIN_RES 0x42
+#define DA9030_VBATMINTXON_RES 0x43
+#define DA9030_ICHMAX_RES 0x44
+#define DA9030_ICHMIN_RES 0x45
+#define DA9030_ICHAVERAGE_RES 0x46
+#define DA9030_VCHMAX_RES 0x47
+#define DA9030_VCHMIN_RES 0x48
+#define DA9030_TBAT_RES 0x49
+
+struct da9030_adc_res {
+ uint8_t vbat_res;
+ uint8_t vbatmin_res;
+ uint8_t vbatmintxon;
+ uint8_t ichmax_res;
+ uint8_t ichmin_res;
+ uint8_t ichaverage_res;
+ uint8_t vchmax_res;
+ uint8_t vchmin_res;
+ uint8_t tbat_res;
+ uint8_t adc_in4_res;
+ uint8_t adc_in5_res;
+};
+
+struct da9030_battery_thresholds {
+ int tbat_low;
+ int tbat_high;
+ int tbat_restart;
+
+ int vbat_low;
+ int vbat_crit;
+ int vbat_charge_start;
+ int vbat_charge_stop;
+ int vbat_charge_restart;
+
+ int vcharge_min;
+ int vcharge_max;
+};
+
+struct da9030_charger {
+ struct power_supply psy;
+
+ struct device *master;
+
+ struct da9030_adc_res adc;
+ struct delayed_work work;
+ unsigned int interval;
+
+ struct power_supply_info *battery_info;
+
+ struct da9030_battery_thresholds thresholds;
+
+ unsigned int charge_milliamp;
+ unsigned int charge_millivolt;
+
+ /* charger status */
+ bool chdet;
+ uint8_t fault;
+ int mA;
+ int mV;
+ bool is_on;
+
+ struct notifier_block nb;
+
+ /* platform callbacks for battery low and critical events */
+ void (*battery_low)(void);
+ void (*battery_critical)(void);
+
+ struct dentry *debug_file;
+};
+
+static inline int da9030_reg_to_mV(int reg)
+{
+ return ((reg * 2650) >> 8) + 2650;
+}
+
+static inline int da9030_millivolt_to_reg(int mV)
+{
+ return ((mV - 2650) << 8) / 2650;
+}
+
+static inline int da9030_reg_to_mA(int reg)
+{
+ return ((reg * 24000) >> 8) / 15;
+}
+
+#ifdef CONFIG_DEBUG_FS
+static int bat_debug_show(struct seq_file *s, void *data)
+{
+ struct da9030_charger *charger = s->private;
+
+ seq_printf(s, "charger is %s\n", charger->is_on ? "on" : "off");
+ if (charger->chdet) {
+ seq_printf(s, "iset = %dmA, vset = %dmV\n",
+ charger->mA, charger->mV);
+ }
+
+ seq_printf(s, "vbat_res = %d (%dmV)\n",
+ charger->adc.vbat_res,
+ da9030_reg_to_mV(charger->adc.vbat_res));
+ seq_printf(s, "vbatmin_res = %d (%dmV)\n",
+ charger->adc.vbatmin_res,
+ da9030_reg_to_mV(charger->adc.vbatmin_res));
+ seq_printf(s, "vbatmintxon = %d (%dmV)\n",
+ charger->adc.vbatmintxon,
+ da9030_reg_to_mV(charger->adc.vbatmintxon));
+ seq_printf(s, "ichmax_res = %d (%dmA)\n",
+ charger->adc.ichmax_res,
+ da9030_reg_to_mV(charger->adc.ichmax_res));
+ seq_printf(s, "ichmin_res = %d (%dmA)\n",
+ charger->adc.ichmin_res,
+ da9030_reg_to_mA(charger->adc.ichmin_res));
+ seq_printf(s, "ichaverage_res = %d (%dmA)\n",
+ charger->adc.ichaverage_res,
+ da9030_reg_to_mA(charger->adc.ichaverage_res));
+ seq_printf(s, "vchmax_res = %d (%dmV)\n",
+ charger->adc.vchmax_res,
+ da9030_reg_to_mA(charger->adc.vchmax_res));
+ seq_printf(s, "vchmin_res = %d (%dmV)\n",
+ charger->adc.vchmin_res,
+ da9030_reg_to_mV(charger->adc.vchmin_res));
+
+ return 0;
+}
+
+static int debug_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, bat_debug_show, inode->i_private);
+}
+
+static const struct file_operations bat_debug_fops = {
+ .open = debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static struct dentry *da9030_bat_create_debugfs(struct da9030_charger *charger)
+{
+ charger->debug_file = debugfs_create_file("charger", 0666, 0, charger,
+ &bat_debug_fops);
+ return charger->debug_file;
+}
+
+static void da9030_bat_remove_debugfs(struct da9030_charger *charger)
+{
+ debugfs_remove(charger->debug_file);
+}
+#else
+static inline struct dentry *da9030_bat_create_debugfs(struct da9030_charger *charger)
+{
+ return NULL;
+}
+static inline void da9030_bat_remove_debugfs(struct da9030_charger *charger)
+{
+}
+#endif
+
+static inline void da9030_read_adc(struct da9030_charger *charger,
+ struct da9030_adc_res *adc)
+{
+ da903x_reads(charger->master, DA9030_VBAT_RES,
+ sizeof(*adc), (uint8_t *)adc);
+}
+
+static void da9030_charger_update_state(struct da9030_charger *charger)
+{
+ uint8_t val;
+
+ da903x_read(charger->master, DA9030_CHARGE_CONTROL, &val);
+ charger->is_on = (val & DA9030_CHRG_CHARGER_ENABLE) ? 1 : 0;
+ charger->mA = ((val >> 3) & 0xf) * 100;
+ charger->mV = (val & 0x7) * 50 + 4000;
+
+ da9030_read_adc(charger, &charger->adc);
+ da903x_read(charger->master, DA9030_FAULT_LOG, &charger->fault);
+ charger->chdet = da903x_query_status(charger->master,
+ DA9030_STATUS_CHDET);
+}
+
+static void da9030_set_charge(struct da9030_charger *charger, int on)
+{
+ uint8_t val;
+
+ if (on) {
+ val = DA9030_CHRG_CHARGER_ENABLE;
+ val |= (charger->charge_milliamp / 100) << 3;
+ val |= (charger->charge_millivolt - 4000) / 50;
+ charger->is_on = 1;
+ } else {
+ val = 0;
+ charger->is_on = 0;
+ }
+
+ da903x_write(charger->master, DA9030_CHARGE_CONTROL, val);
+
+ power_supply_changed(&charger->psy);
+}
+
+static void da9030_charger_check_state(struct da9030_charger *charger)
+{
+ da9030_charger_update_state(charger);
+
+ /* we wake or boot with external power on */
+ if (!charger->is_on) {
+ if ((charger->chdet) &&
+ (charger->adc.vbat_res <
+ charger->thresholds.vbat_charge_start)) {
+ da9030_set_charge(charger, 1);
+ }
+ } else {
+ /* Charger has been pulled out */
+ if (!charger->chdet) {
+ da9030_set_charge(charger, 0);
+ return;
+ }
+
+ if (charger->adc.vbat_res >=
+ charger->thresholds.vbat_charge_stop) {
+ da9030_set_charge(charger, 0);
+ da903x_write(charger->master, DA9030_VBATMON,
+ charger->thresholds.vbat_charge_restart);
+ } else if (charger->adc.vbat_res >
+ charger->thresholds.vbat_low) {
+ /* we are charging and passed LOW_THRESH,
+ so upate DA9030 VBAT threshold
+ */
+ da903x_write(charger->master, DA9030_VBATMON,
+ charger->thresholds.vbat_low);
+ }
+ if (charger->adc.vchmax_res > charger->thresholds.vcharge_max ||
+ charger->adc.vchmin_res < charger->thresholds.vcharge_min ||
+ /* Tempreture readings are negative */
+ charger->adc.tbat_res < charger->thresholds.tbat_high ||
+ charger->adc.tbat_res > charger->thresholds.tbat_low) {
+ /* disable charger */
+ da9030_set_charge(charger, 0);
+ }
+ }
+}
+
+static void da9030_charging_monitor(struct work_struct *work)
+{
+ struct da9030_charger *charger;
+
+ charger = container_of(work, struct da9030_charger, work.work);
+
+ da9030_charger_check_state(charger);
+
+ /* reschedule for the next time */
+ schedule_delayed_work(&charger->work, charger->interval);
+}
+
+static enum power_supply_property da9030_battery_props[] = {
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+};
+
+static void da9030_battery_check_status(struct da9030_charger *charger,
+ union power_supply_propval *val)
+{
+ if (charger->chdet) {
+ if (charger->is_on)
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ } else {
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+}
+
+static void da9030_battery_check_health(struct da9030_charger *charger,
+ union power_supply_propval *val)
+{
+ if (charger->fault & DA9030_FAULT_LOG_OVER_TEMP)
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else if (charger->fault & DA9030_FAULT_LOG_VBAT_OVER)
+ val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+}
+
+static int da9030_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct da9030_charger *charger;
+ charger = container_of(psy, struct da9030_charger, psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ da9030_battery_check_status(charger, val);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ da9030_battery_check_health(charger, val);
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = charger->battery_info->technology;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ val->intval = charger->battery_info->voltage_max_design;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = charger->battery_info->voltage_min_design;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = da9030_reg_to_mV(charger->adc.vbat_res) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ val->intval =
+ da9030_reg_to_mA(charger->adc.ichaverage_res) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = charger->battery_info->name;
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static void da9030_battery_vbat_event(struct da9030_charger *charger)
+{
+ da9030_read_adc(charger, &charger->adc);
+
+ if (charger->is_on)
+ return;
+
+ if (charger->adc.vbat_res < charger->thresholds.vbat_low) {
+ /* set VBAT threshold for critical */
+ da903x_write(charger->master, DA9030_VBATMON,
+ charger->thresholds.vbat_crit);
+ if (charger->battery_low)
+ charger->battery_low();
+ } else if (charger->adc.vbat_res <
+ charger->thresholds.vbat_crit) {
+ /* notify the system of battery critical */
+ if (charger->battery_critical)
+ charger->battery_critical();
+ }
+}
+
+static int da9030_battery_event(struct notifier_block *nb, unsigned long event,
+ void *data)
+{
+ struct da9030_charger *charger =
+ container_of(nb, struct da9030_charger, nb);
+
+ switch (event) {
+ case DA9030_EVENT_CHDET:
+ cancel_delayed_work_sync(&charger->work);
+ schedule_work(&charger->work.work);
+ break;
+ case DA9030_EVENT_VBATMON:
+ da9030_battery_vbat_event(charger);
+ break;
+ case DA9030_EVENT_CHIOVER:
+ case DA9030_EVENT_TBAT:
+ da9030_set_charge(charger, 0);
+ break;
+ }
+
+ return 0;
+}
+
+static void da9030_battery_convert_thresholds(struct da9030_charger *charger,
+ struct da9030_battery_info *pdata)
+{
+ charger->thresholds.tbat_low = pdata->tbat_low;
+ charger->thresholds.tbat_high = pdata->tbat_high;
+ charger->thresholds.tbat_restart = pdata->tbat_restart;
+
+ charger->thresholds.vbat_low =
+ da9030_millivolt_to_reg(pdata->vbat_low);
+ charger->thresholds.vbat_crit =
+ da9030_millivolt_to_reg(pdata->vbat_crit);
+ charger->thresholds.vbat_charge_start =
+ da9030_millivolt_to_reg(pdata->vbat_charge_start);
+ charger->thresholds.vbat_charge_stop =
+ da9030_millivolt_to_reg(pdata->vbat_charge_stop);
+ charger->thresholds.vbat_charge_restart =
+ da9030_millivolt_to_reg(pdata->vbat_charge_restart);
+
+ charger->thresholds.vcharge_min =
+ da9030_millivolt_to_reg(pdata->vcharge_min);
+ charger->thresholds.vcharge_max =
+ da9030_millivolt_to_reg(pdata->vcharge_max);
+}
+
+static void da9030_battery_setup_psy(struct da9030_charger *charger)
+{
+ struct power_supply *psy = &charger->psy;
+ struct power_supply_info *info = charger->battery_info;
+
+ psy->name = info->name;
+ psy->use_for_apm = info->use_for_apm;
+ psy->type = POWER_SUPPLY_TYPE_BATTERY;
+ psy->get_property = da9030_battery_get_property;
+
+ psy->properties = da9030_battery_props;
+ psy->num_properties = ARRAY_SIZE(da9030_battery_props);
+};
+
+static int da9030_battery_charger_init(struct da9030_charger *charger)
+{
+ char v[5];
+ int ret;
+
+ v[0] = v[1] = charger->thresholds.vbat_low;
+ v[2] = charger->thresholds.tbat_high;
+ v[3] = charger->thresholds.tbat_restart;
+ v[4] = charger->thresholds.tbat_low;
+
+ ret = da903x_writes(charger->master, DA9030_VBATMON, 5, v);
+ if (ret)
+ return ret;
+
+ /*
+ * Enable reference voltage supply for ADC from the LDO_INTERNAL
+ * regulator. Must be set before ADC measurements can be made.
+ */
+ ret = da903x_write(charger->master, DA9030_ADC_MAN_CONTROL,
+ DA9030_ADC_LDO_INT_ENABLE |
+ DA9030_ADC_TBATREF_ENABLE);
+ if (ret)
+ return ret;
+
+ /* enable auto ADC measuremnts */
+ return da903x_write(charger->master, DA9030_ADC_AUTO_CONTROL,
+ DA9030_ADC_TBAT_ENABLE | DA9030_ADC_VBAT_IN_TXON |
+ DA9030_ADC_VCH_ENABLE | DA9030_ADC_ICH_ENABLE |
+ DA9030_ADC_VBAT_ENABLE |
+ DA9030_ADC_AUTO_SLEEP_ENABLE);
+}
+
+static int da9030_battery_probe(struct platform_device *pdev)
+{
+ struct da9030_charger *charger;
+ struct da9030_battery_info *pdata = pdev->dev.platform_data;
+ int ret;
+
+ if (pdata == NULL)
+ return -EINVAL;
+
+ if (pdata->charge_milliamp >= 1500 ||
+ pdata->charge_millivolt < 4000 ||
+ pdata->charge_millivolt > 4350)
+ return -EINVAL;
+
+ charger = kzalloc(sizeof(*charger), GFP_KERNEL);
+ if (charger == NULL)
+ return -ENOMEM;
+
+ charger->master = pdev->dev.parent;
+
+ /* 10 seconds between monitor runs unless platform defines other
+ interval */
+ charger->interval = msecs_to_jiffies(
+ (pdata->batmon_interval ? : 10) * 1000);
+
+ charger->charge_milliamp = pdata->charge_milliamp;
+ charger->charge_millivolt = pdata->charge_millivolt;
+ charger->battery_info = pdata->battery_info;
+ charger->battery_low = pdata->battery_low;
+ charger->battery_critical = pdata->battery_critical;
+
+ da9030_battery_convert_thresholds(charger, pdata);
+
+ ret = da9030_battery_charger_init(charger);
+ if (ret)
+ goto err_charger_init;
+
+ INIT_DELAYED_WORK(&charger->work, da9030_charging_monitor);
+ schedule_delayed_work(&charger->work, charger->interval);
+
+ charger->nb.notifier_call = da9030_battery_event;
+ ret = da903x_register_notifier(charger->master, &charger->nb,
+ DA9030_EVENT_CHDET |
+ DA9030_EVENT_VBATMON |
+ DA9030_EVENT_CHIOVER |
+ DA9030_EVENT_TBAT);
+ if (ret)
+ goto err_notifier;
+
+ da9030_battery_setup_psy(charger);
+ ret = power_supply_register(&pdev->dev, &charger->psy);
+ if (ret)
+ goto err_ps_register;
+
+ charger->debug_file = da9030_bat_create_debugfs(charger);
+ platform_set_drvdata(pdev, charger);
+ return 0;
+
+err_ps_register:
+ da903x_unregister_notifier(charger->master, &charger->nb,
+ DA9030_EVENT_CHDET | DA9030_EVENT_VBATMON |
+ DA9030_EVENT_CHIOVER | DA9030_EVENT_TBAT);
+err_notifier:
+ cancel_delayed_work(&charger->work);
+
+err_charger_init:
+ kfree(charger);
+
+ return ret;
+}
+
+static int da9030_battery_remove(struct platform_device *dev)
+{
+ struct da9030_charger *charger = platform_get_drvdata(dev);
+
+ da9030_bat_remove_debugfs(charger);
+
+ da903x_unregister_notifier(charger->master, &charger->nb,
+ DA9030_EVENT_CHDET | DA9030_EVENT_VBATMON |
+ DA9030_EVENT_CHIOVER | DA9030_EVENT_TBAT);
+ cancel_delayed_work_sync(&charger->work);
+ da9030_set_charge(charger, 0);
+ power_supply_unregister(&charger->psy);
+
+ kfree(charger);
+
+ return 0;
+}
+
+static struct platform_driver da903x_battery_driver = {
+ .driver = {
+ .name = "da903x-battery",
+ .owner = THIS_MODULE,
+ },
+ .probe = da9030_battery_probe,
+ .remove = da9030_battery_remove,
+};
+
+module_platform_driver(da903x_battery_driver);
+
+MODULE_DESCRIPTION("DA9030 battery charger driver");
+MODULE_AUTHOR("Mike Rapoport, CompuLab");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/da9052-battery.c b/ap/os/linux/linux-3.4.x/drivers/power/da9052-battery.c
new file mode 100644
index 0000000..a5f6a0e
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/da9052-battery.c
@@ -0,0 +1,655 @@
+/*
+ * Batttery Driver for Dialog DA9052 PMICs
+ *
+ * Copyright(c) 2011 Dialog Semiconductor Ltd.
+ *
+ * Author: David Dajun Chen <dchen@diasemi.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/delay.h>
+#include <linux/freezer.h>
+#include <linux/fs.h>
+#include <linux/jiffies.h>
+#include <linux/module.h>
+#include <linux/timer.h>
+#include <linux/uaccess.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+
+#include <linux/mfd/da9052/da9052.h>
+#include <linux/mfd/da9052/pdata.h>
+#include <linux/mfd/da9052/reg.h>
+
+/* STATIC CONFIGURATION */
+#define DA9052_BAT_CUTOFF_VOLT 2800
+#define DA9052_BAT_TSH 62000
+#define DA9052_BAT_LOW_CAP 4
+#define DA9052_AVG_SZ 4
+#define DA9052_VC_TBL_SZ 68
+#define DA9052_VC_TBL_REF_SZ 3
+
+#define DA9052_ISET_USB_MASK 0x0F
+#define DA9052_CHG_USB_ILIM_MASK 0x40
+#define DA9052_CHG_LIM_COLS 16
+
+#define DA9052_MEAN(x, y) ((x + y) / 2)
+
+enum charger_type_enum {
+ DA9052_NOCHARGER = 1,
+ DA9052_CHARGER,
+};
+
+static const u16 da9052_chg_current_lim[2][DA9052_CHG_LIM_COLS] = {
+ {70, 80, 90, 100, 110, 120, 400, 450,
+ 500, 550, 600, 650, 700, 900, 1100, 1300},
+ {80, 90, 100, 110, 120, 400, 450, 500,
+ 550, 600, 800, 1000, 1200, 1400, 1600, 1800},
+};
+
+static const u16 vc_tbl_ref[3] = {10, 25, 40};
+/* Lookup table for voltage vs capacity */
+static u32 const vc_tbl[3][68][2] = {
+ /* For temperature 10 degree Celsius */
+ {
+ {4082, 100}, {4036, 98},
+ {4020, 96}, {4008, 95},
+ {3997, 93}, {3983, 91},
+ {3964, 90}, {3943, 88},
+ {3926, 87}, {3912, 85},
+ {3900, 84}, {3890, 82},
+ {3881, 80}, {3873, 79},
+ {3865, 77}, {3857, 76},
+ {3848, 74}, {3839, 73},
+ {3829, 71}, {3820, 70},
+ {3811, 68}, {3802, 67},
+ {3794, 65}, {3785, 64},
+ {3778, 62}, {3770, 61},
+ {3763, 59}, {3756, 58},
+ {3750, 56}, {3744, 55},
+ {3738, 53}, {3732, 52},
+ {3727, 50}, {3722, 49},
+ {3717, 47}, {3712, 46},
+ {3708, 44}, {3703, 43},
+ {3700, 41}, {3696, 40},
+ {3693, 38}, {3691, 37},
+ {3688, 35}, {3686, 34},
+ {3683, 32}, {3681, 31},
+ {3678, 29}, {3675, 28},
+ {3672, 26}, {3669, 25},
+ {3665, 23}, {3661, 22},
+ {3656, 21}, {3651, 19},
+ {3645, 18}, {3639, 16},
+ {3631, 15}, {3622, 13},
+ {3611, 12}, {3600, 10},
+ {3587, 9}, {3572, 7},
+ {3548, 6}, {3503, 5},
+ {3420, 3}, {3268, 2},
+ {2992, 1}, {2746, 0}
+ },
+ /* For temperature 25 degree Celsius */
+ {
+ {4102, 100}, {4065, 98},
+ {4048, 96}, {4034, 95},
+ {4021, 93}, {4011, 92},
+ {4001, 90}, {3986, 88},
+ {3968, 87}, {3952, 85},
+ {3938, 84}, {3926, 82},
+ {3916, 81}, {3908, 79},
+ {3900, 77}, {3892, 76},
+ {3883, 74}, {3874, 73},
+ {3864, 71}, {3855, 70},
+ {3846, 68}, {3836, 67},
+ {3827, 65}, {3819, 64},
+ {3810, 62}, {3801, 61},
+ {3793, 59}, {3786, 58},
+ {3778, 56}, {3772, 55},
+ {3765, 53}, {3759, 52},
+ {3754, 50}, {3748, 49},
+ {3743, 47}, {3738, 46},
+ {3733, 44}, {3728, 43},
+ {3724, 41}, {3720, 40},
+ {3716, 38}, {3712, 37},
+ {3709, 35}, {3706, 34},
+ {3703, 33}, {3701, 31},
+ {3698, 30}, {3696, 28},
+ {3693, 27}, {3690, 25},
+ {3687, 24}, {3683, 22},
+ {3680, 21}, {3675, 19},
+ {3671, 18}, {3666, 17},
+ {3660, 15}, {3654, 14},
+ {3647, 12}, {3639, 11},
+ {3630, 9}, {3621, 8},
+ {3613, 6}, {3606, 5},
+ {3597, 4}, {3582, 2},
+ {3546, 1}, {2747, 0}
+ },
+ /* For temperature 40 degree Celsius */
+ {
+ {4114, 100}, {4081, 98},
+ {4065, 96}, {4050, 95},
+ {4036, 93}, {4024, 92},
+ {4013, 90}, {4002, 88},
+ {3990, 87}, {3976, 85},
+ {3962, 84}, {3950, 82},
+ {3939, 81}, {3930, 79},
+ {3921, 77}, {3912, 76},
+ {3902, 74}, {3893, 73},
+ {3883, 71}, {3874, 70},
+ {3865, 68}, {3856, 67},
+ {3847, 65}, {3838, 64},
+ {3829, 62}, {3820, 61},
+ {3812, 59}, {3803, 58},
+ {3795, 56}, {3787, 55},
+ {3780, 53}, {3773, 52},
+ {3767, 50}, {3761, 49},
+ {3756, 47}, {3751, 46},
+ {3746, 44}, {3741, 43},
+ {3736, 41}, {3732, 40},
+ {3728, 38}, {3724, 37},
+ {3720, 35}, {3716, 34},
+ {3713, 33}, {3710, 31},
+ {3707, 30}, {3704, 28},
+ {3701, 27}, {3698, 25},
+ {3695, 24}, {3691, 22},
+ {3686, 21}, {3681, 19},
+ {3676, 18}, {3671, 17},
+ {3666, 15}, {3661, 14},
+ {3655, 12}, {3648, 11},
+ {3640, 9}, {3632, 8},
+ {3622, 6}, {3616, 5},
+ {3611, 4}, {3604, 2},
+ {3594, 1}, {2747, 0}
+ }
+};
+
+struct da9052_battery {
+ struct da9052 *da9052;
+ struct power_supply psy;
+ struct notifier_block nb;
+ int charger_type;
+ int status;
+ int health;
+};
+
+static inline int volt_reg_to_mV(int value)
+{
+ return ((value * 1000) / 512) + 2500;
+}
+
+static inline int ichg_reg_to_mA(int value)
+{
+ return (value * 3900) / 1000;
+}
+
+static int da9052_read_chgend_current(struct da9052_battery *bat,
+ int *current_mA)
+{
+ int ret;
+
+ if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING)
+ return -EINVAL;
+
+ ret = da9052_reg_read(bat->da9052, DA9052_ICHG_END_REG);
+ if (ret < 0)
+ return ret;
+
+ *current_mA = ichg_reg_to_mA(ret & DA9052_ICHGEND_ICHGEND);
+
+ return 0;
+}
+
+static int da9052_read_chg_current(struct da9052_battery *bat, int *current_mA)
+{
+ int ret;
+
+ if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING)
+ return -EINVAL;
+
+ ret = da9052_reg_read(bat->da9052, DA9052_ICHG_AV_REG);
+ if (ret < 0)
+ return ret;
+
+ *current_mA = ichg_reg_to_mA(ret & DA9052_ICHGAV_ICHGAV);
+
+ return 0;
+}
+
+static int da9052_bat_check_status(struct da9052_battery *bat, int *status)
+{
+ u8 v[2] = {0, 0};
+ u8 bat_status;
+ u8 chg_end;
+ int ret;
+ int chg_current;
+ int chg_end_current;
+ bool dcinsel;
+ bool dcindet;
+ bool vbussel;
+ bool vbusdet;
+ bool dc;
+ bool vbus;
+
+ ret = da9052_group_read(bat->da9052, DA9052_STATUS_A_REG, 2, v);
+ if (ret < 0)
+ return ret;
+
+ bat_status = v[0];
+ chg_end = v[1];
+
+ dcinsel = bat_status & DA9052_STATUSA_DCINSEL;
+ dcindet = bat_status & DA9052_STATUSA_DCINDET;
+ vbussel = bat_status & DA9052_STATUSA_VBUSSEL;
+ vbusdet = bat_status & DA9052_STATUSA_VBUSDET;
+ dc = dcinsel && dcindet;
+ vbus = vbussel && vbusdet;
+
+ /* Preference to WALL(DCIN) charger unit */
+ if (dc || vbus) {
+ bat->charger_type = DA9052_CHARGER;
+
+ /* If charging end flag is set and Charging current is greater
+ * than charging end limit then battery is charging
+ */
+ if ((chg_end & DA9052_STATUSB_CHGEND) != 0) {
+ ret = da9052_read_chg_current(bat, &chg_current);
+ if (ret < 0)
+ return ret;
+ ret = da9052_read_chgend_current(bat, &chg_end_current);
+ if (ret < 0)
+ return ret;
+
+ if (chg_current >= chg_end_current)
+ bat->status = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ bat->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ } else {
+ /* If Charging end flag is cleared then battery is
+ * charging
+ */
+ bat->status = POWER_SUPPLY_STATUS_CHARGING;
+ }
+ } else if (dcindet || vbusdet) {
+ bat->charger_type = DA9052_CHARGER;
+ bat->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ } else {
+ bat->charger_type = DA9052_NOCHARGER;
+ bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ if (status != NULL)
+ *status = bat->status;
+ return 0;
+}
+
+static int da9052_bat_read_volt(struct da9052_battery *bat, int *volt_mV)
+{
+ int volt;
+
+ volt = da9052_adc_manual_read(bat->da9052, DA9052_ADC_MAN_MUXSEL_VBAT);
+ if (volt < 0)
+ return volt;
+
+ *volt_mV = volt_reg_to_mV(volt);
+
+ return 0;
+}
+
+static int da9052_bat_check_presence(struct da9052_battery *bat, int *illegal)
+{
+ int bat_temp;
+
+ bat_temp = da9052_adc_read_temp(bat->da9052);
+ if (bat_temp < 0)
+ return bat_temp;
+
+ if (bat_temp > DA9052_BAT_TSH)
+ *illegal = 1;
+ else
+ *illegal = 0;
+
+ return 0;
+}
+
+static int da9052_bat_interpolate(int vbat_lower, int vbat_upper,
+ int level_lower, int level_upper,
+ int bat_voltage)
+{
+ int tmp;
+
+ tmp = ((level_upper - level_lower) * 1000) / (vbat_upper - vbat_lower);
+ tmp = level_lower + (((bat_voltage - vbat_lower) * tmp) / 1000);
+
+ return tmp;
+}
+
+unsigned char da9052_determine_vc_tbl_index(unsigned char adc_temp)
+{
+ int i;
+
+ if (adc_temp <= vc_tbl_ref[0])
+ return 0;
+
+ if (adc_temp > vc_tbl_ref[DA9052_VC_TBL_REF_SZ - 1])
+ return DA9052_VC_TBL_REF_SZ - 1;
+
+ for (i = 0; i < DA9052_VC_TBL_REF_SZ; i++) {
+ if ((adc_temp > vc_tbl_ref[i]) &&
+ (adc_temp <= DA9052_MEAN(vc_tbl_ref[i], vc_tbl_ref[i + 1])))
+ return i;
+ if ((adc_temp > DA9052_MEAN(vc_tbl_ref[i], vc_tbl_ref[i + 1]))
+ && (adc_temp <= vc_tbl_ref[i]))
+ return i + 1;
+ }
+}
+
+static int da9052_bat_read_capacity(struct da9052_battery *bat, int *capacity)
+{
+ int adc_temp;
+ int bat_voltage;
+ int vbat_lower;
+ int vbat_upper;
+ int level_upper;
+ int level_lower;
+ int ret;
+ int flag;
+ int i = 0;
+ int j;
+
+ ret = da9052_bat_read_volt(bat, &bat_voltage);
+ if (ret < 0)
+ return ret;
+
+ adc_temp = da9052_adc_read_temp(bat->da9052);
+ if (adc_temp < 0)
+ return adc_temp;
+
+ i = da9052_determine_vc_tbl_index(adc_temp);
+
+ if (bat_voltage >= vc_tbl[i][0][0]) {
+ *capacity = 100;
+ return 0;
+ }
+ if (bat_voltage <= vc_tbl[i][DA9052_VC_TBL_SZ - 1][0]) {
+ *capacity = 0;
+ return 0;
+ }
+ flag = 0;
+
+ for (j = 0; j < (DA9052_VC_TBL_SZ-1); j++) {
+ if ((bat_voltage <= vc_tbl[i][j][0]) &&
+ (bat_voltage >= vc_tbl[i][j + 1][0])) {
+ vbat_upper = vc_tbl[i][j][0];
+ vbat_lower = vc_tbl[i][j + 1][0];
+ level_upper = vc_tbl[i][j][1];
+ level_lower = vc_tbl[i][j + 1][1];
+ flag = 1;
+ break;
+ }
+ }
+ if (!flag)
+ return -EIO;
+
+ *capacity = da9052_bat_interpolate(vbat_lower, vbat_upper, level_lower,
+ level_upper, bat_voltage);
+
+ return 0;
+}
+
+static int da9052_bat_check_health(struct da9052_battery *bat, int *health)
+{
+ int ret;
+ int bat_illegal;
+ int capacity;
+
+ ret = da9052_bat_check_presence(bat, &bat_illegal);
+ if (ret < 0)
+ return ret;
+
+ if (bat_illegal) {
+ bat->health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ return 0;
+ }
+
+ if (bat->health != POWER_SUPPLY_HEALTH_OVERHEAT) {
+ ret = da9052_bat_read_capacity(bat, &capacity);
+ if (ret < 0)
+ return ret;
+ if (capacity < DA9052_BAT_LOW_CAP)
+ bat->health = POWER_SUPPLY_HEALTH_DEAD;
+ else
+ bat->health = POWER_SUPPLY_HEALTH_GOOD;
+ }
+
+ *health = bat->health;
+
+ return 0;
+}
+
+static irqreturn_t da9052_bat_irq(int irq, void *data)
+{
+ struct da9052_battery *bat = data;
+
+ irq -= bat->da9052->irq_base;
+
+ if (irq == DA9052_IRQ_CHGEND)
+ bat->status = POWER_SUPPLY_STATUS_FULL;
+ else
+ da9052_bat_check_status(bat, NULL);
+
+ if (irq == DA9052_IRQ_CHGEND || irq == DA9052_IRQ_DCIN ||
+ irq == DA9052_IRQ_VBUS || irq == DA9052_IRQ_TBAT) {
+ power_supply_changed(&bat->psy);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int da9052_USB_current_notifier(struct notifier_block *nb,
+ unsigned long events, void *data)
+{
+ u8 row;
+ u8 col;
+ int *current_mA = data;
+ int ret;
+ struct da9052_battery *bat = container_of(nb, struct da9052_battery,
+ nb);
+
+ if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING)
+ return -EPERM;
+
+ ret = da9052_reg_read(bat->da9052, DA9052_CHGBUCK_REG);
+ if (ret & DA9052_CHG_USB_ILIM_MASK)
+ return -EPERM;
+
+ if (bat->da9052->chip_id == DA9052)
+ row = 0;
+ else
+ row = 1;
+
+ if (*current_mA < da9052_chg_current_lim[row][0] ||
+ *current_mA > da9052_chg_current_lim[row][DA9052_CHG_LIM_COLS - 1])
+ return -EINVAL;
+
+ for (col = 0; col <= DA9052_CHG_LIM_COLS - 1 ; col++) {
+ if (*current_mA <= da9052_chg_current_lim[row][col])
+ break;
+ }
+
+ return da9052_reg_update(bat->da9052, DA9052_ISET_REG,
+ DA9052_ISET_USB_MASK, col);
+}
+
+static int da9052_bat_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret;
+ int illegal;
+ struct da9052_battery *bat = container_of(psy, struct da9052_battery,
+ psy);
+
+ ret = da9052_bat_check_presence(bat, &illegal);
+ if (ret < 0)
+ return ret;
+
+ if (illegal && psp != POWER_SUPPLY_PROP_PRESENT)
+ return -ENODEV;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = da9052_bat_check_status(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval =
+ (bat->charger_type == DA9052_NOCHARGER) ? 0 : 1;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ ret = da9052_bat_check_presence(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = da9052_bat_check_health(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = DA9052_BAT_CUTOFF_VOLT * 1000;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ ret = da9052_bat_read_volt(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ ret = da9052_read_chg_current(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = da9052_bat_read_capacity(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = da9052_adc_read_temp(bat->da9052);
+ ret = val->intval;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return ret;
+}
+
+static enum power_supply_property da9052_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+};
+
+static struct power_supply template_battery = {
+ .name = "da9052-bat",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = da9052_bat_props,
+ .num_properties = ARRAY_SIZE(da9052_bat_props),
+ .get_property = da9052_bat_get_property,
+};
+
+static const char *const da9052_bat_irqs[] = {
+ "BATT TEMP",
+ "DCIN DET",
+ "DCIN REM",
+ "VBUS DET",
+ "VBUS REM",
+ "CHG END",
+};
+
+static s32 __devinit da9052_bat_probe(struct platform_device *pdev)
+{
+ struct da9052_pdata *pdata;
+ struct da9052_battery *bat;
+ int ret;
+ int irq;
+ int i;
+
+ bat = kzalloc(sizeof(struct da9052_battery), GFP_KERNEL);
+ if (!bat)
+ return -ENOMEM;
+
+ bat->da9052 = dev_get_drvdata(pdev->dev.parent);
+ bat->psy = template_battery;
+ bat->charger_type = DA9052_NOCHARGER;
+ bat->status = POWER_SUPPLY_STATUS_UNKNOWN;
+ bat->health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ bat->nb.notifier_call = da9052_USB_current_notifier;
+
+ pdata = bat->da9052->dev->platform_data;
+ if (pdata != NULL && pdata->use_for_apm)
+ bat->psy.use_for_apm = pdata->use_for_apm;
+ else
+ bat->psy.use_for_apm = 1;
+
+ for (i = 0; i < ARRAY_SIZE(da9052_bat_irqs); i++) {
+ irq = platform_get_irq_byname(pdev, da9052_bat_irqs[i]);
+ ret = request_threaded_irq(bat->da9052->irq_base + irq,
+ NULL, da9052_bat_irq,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ da9052_bat_irqs[i], bat);
+ if (ret != 0) {
+ dev_err(bat->da9052->dev,
+ "DA9052 failed to request %s IRQ %d: %d\n",
+ da9052_bat_irqs[i], irq, ret);
+ goto err;
+ }
+ }
+
+ ret = power_supply_register(&pdev->dev, &bat->psy);
+ if (ret)
+ goto err;
+
+ platform_set_drvdata(pdev, bat);
+ return 0;
+
+err:
+ for (; i >= 0; i--) {
+ irq = platform_get_irq_byname(pdev, da9052_bat_irqs[i]);
+ free_irq(bat->da9052->irq_base + irq, bat);
+ }
+ kfree(bat);
+ return ret;
+}
+static int __devexit da9052_bat_remove(struct platform_device *pdev)
+{
+ int i;
+ int irq;
+ struct da9052_battery *bat = platform_get_drvdata(pdev);
+
+ for (i = 0; i < ARRAY_SIZE(da9052_bat_irqs); i++) {
+ irq = platform_get_irq_byname(pdev, da9052_bat_irqs[i]);
+ free_irq(bat->da9052->irq_base + irq, bat);
+ }
+ power_supply_unregister(&bat->psy);
+ kfree(bat);
+
+ return 0;
+}
+
+static struct platform_driver da9052_bat_driver = {
+ .probe = da9052_bat_probe,
+ .remove = __devexit_p(da9052_bat_remove),
+ .driver = {
+ .name = "da9052-bat",
+ .owner = THIS_MODULE,
+ },
+};
+module_platform_driver(da9052_bat_driver);
+
+MODULE_DESCRIPTION("DA9052 BAT Device Driver");
+MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:da9052-bat");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/ds2760_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/ds2760_battery.c
new file mode 100644
index 0000000..076e211
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/ds2760_battery.c
@@ -0,0 +1,650 @@
+/*
+ * Driver for batteries with DS2760 chips inside.
+ *
+ * Copyright © 2007 Anton Vorontsov
+ * 2004-2007 Matt Reimer
+ * 2004 Szabolcs Gyurko
+ *
+ * Use consistent with the GNU GPL is permitted,
+ * provided that this copyright notice is
+ * preserved in its entirety in all copies and derived works.
+ *
+ * Author: Anton Vorontsov <cbou@mail.ru>
+ * February 2007
+ *
+ * Matt Reimer <mreimer@vpop.net>
+ * April 2004, 2005, 2007
+ *
+ * Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
+ * September 2004
+ */
+
+#include <linux/module.h>
+#include <linux/param.h>
+#include <linux/jiffies.h>
+#include <linux/workqueue.h>
+#include <linux/pm.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+
+#include "../w1/w1.h"
+#include "../w1/slaves/w1_ds2760.h"
+
+struct ds2760_device_info {
+ struct device *dev;
+
+ /* DS2760 data, valid after calling ds2760_battery_read_status() */
+ unsigned long update_time; /* jiffies when data read */
+ char raw[DS2760_DATA_SIZE]; /* raw DS2760 data */
+ int voltage_raw; /* units of 4.88 mV */
+ int voltage_uV; /* units of µV */
+ int current_raw; /* units of 0.625 mA */
+ int current_uA; /* units of µA */
+ int accum_current_raw; /* units of 0.25 mAh */
+ int accum_current_uAh; /* units of µAh */
+ int temp_raw; /* units of 0.125 °C */
+ int temp_C; /* units of 0.1 °C */
+ int rated_capacity; /* units of µAh */
+ int rem_capacity; /* percentage */
+ int full_active_uAh; /* units of µAh */
+ int empty_uAh; /* units of µAh */
+ int life_sec; /* units of seconds */
+ int charge_status; /* POWER_SUPPLY_STATUS_* */
+
+ int full_counter;
+ struct power_supply bat;
+ struct device *w1_dev;
+ struct workqueue_struct *monitor_wqueue;
+ struct delayed_work monitor_work;
+ struct delayed_work set_charged_work;
+};
+
+static unsigned int cache_time = 1000;
+module_param(cache_time, uint, 0644);
+MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
+
+static bool pmod_enabled;
+module_param(pmod_enabled, bool, 0644);
+MODULE_PARM_DESC(pmod_enabled, "PMOD enable bit");
+
+static unsigned int rated_capacity;
+module_param(rated_capacity, uint, 0644);
+MODULE_PARM_DESC(rated_capacity, "rated battery capacity, 10*mAh or index");
+
+static unsigned int current_accum;
+module_param(current_accum, uint, 0644);
+MODULE_PARM_DESC(current_accum, "current accumulator value");
+
+/* Some batteries have their rated capacity stored a N * 10 mAh, while
+ * others use an index into this table. */
+static int rated_capacities[] = {
+ 0,
+ 920, /* Samsung */
+ 920, /* BYD */
+ 920, /* Lishen */
+ 920, /* NEC */
+ 1440, /* Samsung */
+ 1440, /* BYD */
+#ifdef CONFIG_MACH_H4700
+ 1800, /* HP iPAQ hx4700 3.7V 1800mAh (359113-001) */
+#else
+ 1440, /* Lishen */
+#endif
+ 1440, /* NEC */
+ 2880, /* Samsung */
+ 2880, /* BYD */
+ 2880, /* Lishen */
+ 2880, /* NEC */
+#ifdef CONFIG_MACH_H4700
+ 0,
+ 3600, /* HP iPAQ hx4700 3.7V 3600mAh (359114-001) */
+#endif
+};
+
+/* array is level at temps 0°C, 10°C, 20°C, 30°C, 40°C
+ * temp is in Celsius */
+static int battery_interpolate(int array[], int temp)
+{
+ int index, dt;
+
+ if (temp <= 0)
+ return array[0];
+ if (temp >= 40)
+ return array[4];
+
+ index = temp / 10;
+ dt = temp % 10;
+
+ return array[index] + (((array[index + 1] - array[index]) * dt) / 10);
+}
+
+static int ds2760_battery_read_status(struct ds2760_device_info *di)
+{
+ int ret, i, start, count, scale[5];
+
+ if (di->update_time && time_before(jiffies, di->update_time +
+ msecs_to_jiffies(cache_time)))
+ return 0;
+
+ /* The first time we read the entire contents of SRAM/EEPROM,
+ * but after that we just read the interesting bits that change. */
+ if (di->update_time == 0) {
+ start = 0;
+ count = DS2760_DATA_SIZE;
+ } else {
+ start = DS2760_VOLTAGE_MSB;
+ count = DS2760_TEMP_LSB - start + 1;
+ }
+
+ ret = w1_ds2760_read(di->w1_dev, di->raw + start, start, count);
+ if (ret != count) {
+ dev_warn(di->dev, "call to w1_ds2760_read failed (0x%p)\n",
+ di->w1_dev);
+ return 1;
+ }
+
+ di->update_time = jiffies;
+
+ /* DS2760 reports voltage in units of 4.88mV, but the battery class
+ * reports in units of uV, so convert by multiplying by 4880. */
+ di->voltage_raw = (di->raw[DS2760_VOLTAGE_MSB] << 3) |
+ (di->raw[DS2760_VOLTAGE_LSB] >> 5);
+ di->voltage_uV = di->voltage_raw * 4880;
+
+ /* DS2760 reports current in signed units of 0.625mA, but the battery
+ * class reports in units of µA, so convert by multiplying by 625. */
+ di->current_raw =
+ (((signed char)di->raw[DS2760_CURRENT_MSB]) << 5) |
+ (di->raw[DS2760_CURRENT_LSB] >> 3);
+ di->current_uA = di->current_raw * 625;
+
+ /* DS2760 reports accumulated current in signed units of 0.25mAh. */
+ di->accum_current_raw =
+ (((signed char)di->raw[DS2760_CURRENT_ACCUM_MSB]) << 8) |
+ di->raw[DS2760_CURRENT_ACCUM_LSB];
+ di->accum_current_uAh = di->accum_current_raw * 250;
+
+ /* DS2760 reports temperature in signed units of 0.125°C, but the
+ * battery class reports in units of 1/10 °C, so we convert by
+ * multiplying by .125 * 10 = 1.25. */
+ di->temp_raw = (((signed char)di->raw[DS2760_TEMP_MSB]) << 3) |
+ (di->raw[DS2760_TEMP_LSB] >> 5);
+ di->temp_C = di->temp_raw + (di->temp_raw / 4);
+
+ /* At least some battery monitors (e.g. HP iPAQ) store the battery's
+ * maximum rated capacity. */
+ if (di->raw[DS2760_RATED_CAPACITY] < ARRAY_SIZE(rated_capacities))
+ di->rated_capacity = rated_capacities[
+ (unsigned int)di->raw[DS2760_RATED_CAPACITY]];
+ else
+ di->rated_capacity = di->raw[DS2760_RATED_CAPACITY] * 10;
+
+ di->rated_capacity *= 1000; /* convert to µAh */
+
+ /* Calculate the full level at the present temperature. */
+ di->full_active_uAh = di->raw[DS2760_ACTIVE_FULL] << 8 |
+ di->raw[DS2760_ACTIVE_FULL + 1];
+
+ /* If the full_active_uAh value is not given, fall back to the rated
+ * capacity. This is likely to happen when chips are not part of the
+ * battery pack and is therefore not bootstrapped. */
+ if (di->full_active_uAh == 0)
+ di->full_active_uAh = di->rated_capacity / 1000L;
+
+ scale[0] = di->full_active_uAh;
+ for (i = 1; i < 5; i++)
+ scale[i] = scale[i - 1] + di->raw[DS2760_ACTIVE_FULL + 1 + i];
+
+ di->full_active_uAh = battery_interpolate(scale, di->temp_C / 10);
+ di->full_active_uAh *= 1000; /* convert to µAh */
+
+ /* Calculate the empty level at the present temperature. */
+ scale[4] = di->raw[DS2760_ACTIVE_EMPTY + 4];
+ for (i = 3; i >= 0; i--)
+ scale[i] = scale[i + 1] + di->raw[DS2760_ACTIVE_EMPTY + i];
+
+ di->empty_uAh = battery_interpolate(scale, di->temp_C / 10);
+ di->empty_uAh *= 1000; /* convert to µAh */
+
+ if (di->full_active_uAh == di->empty_uAh)
+ di->rem_capacity = 0;
+ else
+ /* From Maxim Application Note 131: remaining capacity =
+ * ((ICA - Empty Value) / (Full Value - Empty Value)) x 100% */
+ di->rem_capacity = ((di->accum_current_uAh - di->empty_uAh) * 100L) /
+ (di->full_active_uAh - di->empty_uAh);
+
+ if (di->rem_capacity < 0)
+ di->rem_capacity = 0;
+ if (di->rem_capacity > 100)
+ di->rem_capacity = 100;
+
+ if (di->current_uA < -100L)
+ di->life_sec = -((di->accum_current_uAh - di->empty_uAh) * 36L)
+ / (di->current_uA / 100L);
+ else
+ di->life_sec = 0;
+
+ return 0;
+}
+
+static void ds2760_battery_set_current_accum(struct ds2760_device_info *di,
+ unsigned int acr_val)
+{
+ unsigned char acr[2];
+
+ /* acr is in units of 0.25 mAh */
+ acr_val *= 4L;
+ acr_val /= 1000;
+
+ acr[0] = acr_val >> 8;
+ acr[1] = acr_val & 0xff;
+
+ if (w1_ds2760_write(di->w1_dev, acr, DS2760_CURRENT_ACCUM_MSB, 2) < 2)
+ dev_warn(di->dev, "ACR write failed\n");
+}
+
+static void ds2760_battery_update_status(struct ds2760_device_info *di)
+{
+ int old_charge_status = di->charge_status;
+
+ ds2760_battery_read_status(di);
+
+ if (di->charge_status == POWER_SUPPLY_STATUS_UNKNOWN)
+ di->full_counter = 0;
+
+ if (power_supply_am_i_supplied(&di->bat)) {
+ if (di->current_uA > 10000) {
+ di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
+ di->full_counter = 0;
+ } else if (di->current_uA < -5000) {
+ if (di->charge_status != POWER_SUPPLY_STATUS_NOT_CHARGING)
+ dev_notice(di->dev, "not enough power to "
+ "charge\n");
+ di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ di->full_counter = 0;
+ } else if (di->current_uA < 10000 &&
+ di->charge_status != POWER_SUPPLY_STATUS_FULL) {
+
+ /* Don't consider the battery to be full unless
+ * we've seen the current < 10 mA at least two
+ * consecutive times. */
+
+ di->full_counter++;
+
+ if (di->full_counter < 2) {
+ di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
+ } else {
+ di->charge_status = POWER_SUPPLY_STATUS_FULL;
+ ds2760_battery_set_current_accum(di,
+ di->full_active_uAh);
+ }
+ }
+ } else {
+ di->charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
+ di->full_counter = 0;
+ }
+
+ if (di->charge_status != old_charge_status)
+ power_supply_changed(&di->bat);
+}
+
+static void ds2760_battery_write_status(struct ds2760_device_info *di,
+ char status)
+{
+ if (status == di->raw[DS2760_STATUS_REG])
+ return;
+
+ w1_ds2760_write(di->w1_dev, &status, DS2760_STATUS_WRITE_REG, 1);
+ w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+ w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+}
+
+static void ds2760_battery_write_rated_capacity(struct ds2760_device_info *di,
+ unsigned char rated_capacity)
+{
+ if (rated_capacity == di->raw[DS2760_RATED_CAPACITY])
+ return;
+
+ w1_ds2760_write(di->w1_dev, &rated_capacity, DS2760_RATED_CAPACITY, 1);
+ w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+ w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+}
+
+static void ds2760_battery_write_active_full(struct ds2760_device_info *di,
+ int active_full)
+{
+ unsigned char tmp[2] = {
+ active_full >> 8,
+ active_full & 0xff
+ };
+
+ if (tmp[0] == di->raw[DS2760_ACTIVE_FULL] &&
+ tmp[1] == di->raw[DS2760_ACTIVE_FULL + 1])
+ return;
+
+ w1_ds2760_write(di->w1_dev, tmp, DS2760_ACTIVE_FULL, sizeof(tmp));
+ w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK0);
+ w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK0);
+
+ /* Write to the di->raw[] buffer directly - the DS2760_ACTIVE_FULL
+ * values won't be read back by ds2760_battery_read_status() */
+ di->raw[DS2760_ACTIVE_FULL] = tmp[0];
+ di->raw[DS2760_ACTIVE_FULL + 1] = tmp[1];
+}
+
+static void ds2760_battery_work(struct work_struct *work)
+{
+ struct ds2760_device_info *di = container_of(work,
+ struct ds2760_device_info, monitor_work.work);
+ const int interval = HZ * 60;
+
+ dev_dbg(di->dev, "%s\n", __func__);
+
+ ds2760_battery_update_status(di);
+ queue_delayed_work(di->monitor_wqueue, &di->monitor_work, interval);
+}
+
+#define to_ds2760_device_info(x) container_of((x), struct ds2760_device_info, \
+ bat);
+
+static void ds2760_battery_external_power_changed(struct power_supply *psy)
+{
+ struct ds2760_device_info *di = to_ds2760_device_info(psy);
+
+ dev_dbg(di->dev, "%s\n", __func__);
+
+ cancel_delayed_work(&di->monitor_work);
+ queue_delayed_work(di->monitor_wqueue, &di->monitor_work, HZ/10);
+}
+
+
+static void ds2760_battery_set_charged_work(struct work_struct *work)
+{
+ char bias;
+ struct ds2760_device_info *di = container_of(work,
+ struct ds2760_device_info, set_charged_work.work);
+
+ dev_dbg(di->dev, "%s\n", __func__);
+
+ ds2760_battery_read_status(di);
+
+ /* When we get notified by external circuitry that the battery is
+ * considered fully charged now, we know that there is no current
+ * flow any more. However, the ds2760's internal current meter is
+ * too inaccurate to rely on - spec say something ~15% failure.
+ * Hence, we use the current offset bias register to compensate
+ * that error.
+ */
+
+ if (!power_supply_am_i_supplied(&di->bat))
+ return;
+
+ bias = (signed char) di->current_raw +
+ (signed char) di->raw[DS2760_CURRENT_OFFSET_BIAS];
+
+ dev_dbg(di->dev, "%s: bias = %d\n", __func__, bias);
+
+ w1_ds2760_write(di->w1_dev, &bias, DS2760_CURRENT_OFFSET_BIAS, 1);
+ w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+ w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+
+ /* Write to the di->raw[] buffer directly - the CURRENT_OFFSET_BIAS
+ * value won't be read back by ds2760_battery_read_status() */
+ di->raw[DS2760_CURRENT_OFFSET_BIAS] = bias;
+}
+
+static void ds2760_battery_set_charged(struct power_supply *psy)
+{
+ struct ds2760_device_info *di = to_ds2760_device_info(psy);
+
+ /* postpone the actual work by 20 secs. This is for debouncing GPIO
+ * signals and to let the current value settle. See AN4188. */
+ cancel_delayed_work(&di->set_charged_work);
+ queue_delayed_work(di->monitor_wqueue, &di->set_charged_work, HZ * 20);
+}
+
+static int ds2760_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct ds2760_device_info *di = to_ds2760_device_info(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = di->charge_status;
+ return 0;
+ default:
+ break;
+ }
+
+ ds2760_battery_read_status(di);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = di->voltage_uV;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = di->current_uA;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ val->intval = di->rated_capacity;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ val->intval = di->full_active_uAh;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_EMPTY:
+ val->intval = di->empty_uAh;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ val->intval = di->accum_current_uAh;
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = di->temp_C;
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
+ val->intval = di->life_sec;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = di->rem_capacity;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ds2760_battery_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct ds2760_device_info *di = to_ds2760_device_info(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ /* the interface counts in uAh, convert the value */
+ ds2760_battery_write_active_full(di, val->intval / 1000L);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ /* ds2760_battery_set_current_accum() does the conversion */
+ ds2760_battery_set_current_accum(di, val->intval);
+ break;
+
+ default:
+ return -EPERM;
+ }
+
+ return 0;
+}
+
+static int ds2760_battery_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ return 1;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property ds2760_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_EMPTY,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+};
+
+static int ds2760_battery_probe(struct platform_device *pdev)
+{
+ char status;
+ int retval = 0;
+ struct ds2760_device_info *di;
+
+ di = kzalloc(sizeof(*di), GFP_KERNEL);
+ if (!di) {
+ retval = -ENOMEM;
+ goto di_alloc_failed;
+ }
+
+ platform_set_drvdata(pdev, di);
+
+ di->dev = &pdev->dev;
+ di->w1_dev = pdev->dev.parent;
+ di->bat.name = dev_name(&pdev->dev);
+ di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
+ di->bat.properties = ds2760_battery_props;
+ di->bat.num_properties = ARRAY_SIZE(ds2760_battery_props);
+ di->bat.get_property = ds2760_battery_get_property;
+ di->bat.set_property = ds2760_battery_set_property;
+ di->bat.property_is_writeable =
+ ds2760_battery_property_is_writeable;
+ di->bat.set_charged = ds2760_battery_set_charged;
+ di->bat.external_power_changed =
+ ds2760_battery_external_power_changed;
+
+ di->charge_status = POWER_SUPPLY_STATUS_UNKNOWN;
+
+ /* enable sleep mode feature */
+ ds2760_battery_read_status(di);
+ status = di->raw[DS2760_STATUS_REG];
+ if (pmod_enabled)
+ status |= DS2760_STATUS_PMOD;
+ else
+ status &= ~DS2760_STATUS_PMOD;
+
+ ds2760_battery_write_status(di, status);
+
+ /* set rated capacity from module param */
+ if (rated_capacity)
+ ds2760_battery_write_rated_capacity(di, rated_capacity);
+
+ /* set current accumulator if given as parameter.
+ * this should only be done for bootstrapping the value */
+ if (current_accum)
+ ds2760_battery_set_current_accum(di, current_accum);
+
+ retval = power_supply_register(&pdev->dev, &di->bat);
+ if (retval) {
+ dev_err(di->dev, "failed to register battery\n");
+ goto batt_failed;
+ }
+
+ INIT_DELAYED_WORK(&di->monitor_work, ds2760_battery_work);
+ INIT_DELAYED_WORK(&di->set_charged_work,
+ ds2760_battery_set_charged_work);
+ di->monitor_wqueue = create_singlethread_workqueue(dev_name(&pdev->dev));
+ if (!di->monitor_wqueue) {
+ retval = -ESRCH;
+ goto workqueue_failed;
+ }
+ queue_delayed_work(di->monitor_wqueue, &di->monitor_work, HZ * 1);
+
+ goto success;
+
+workqueue_failed:
+ power_supply_unregister(&di->bat);
+batt_failed:
+ kfree(di);
+di_alloc_failed:
+success:
+ return retval;
+}
+
+static int ds2760_battery_remove(struct platform_device *pdev)
+{
+ struct ds2760_device_info *di = platform_get_drvdata(pdev);
+
+ cancel_delayed_work_sync(&di->monitor_work);
+ cancel_delayed_work_sync(&di->set_charged_work);
+ destroy_workqueue(di->monitor_wqueue);
+ power_supply_unregister(&di->bat);
+ kfree(di);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int ds2760_battery_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct ds2760_device_info *di = platform_get_drvdata(pdev);
+
+ di->charge_status = POWER_SUPPLY_STATUS_UNKNOWN;
+
+ return 0;
+}
+
+static int ds2760_battery_resume(struct platform_device *pdev)
+{
+ struct ds2760_device_info *di = platform_get_drvdata(pdev);
+
+ di->charge_status = POWER_SUPPLY_STATUS_UNKNOWN;
+ power_supply_changed(&di->bat);
+
+ cancel_delayed_work(&di->monitor_work);
+ queue_delayed_work(di->monitor_wqueue, &di->monitor_work, HZ);
+
+ return 0;
+}
+
+#else
+
+#define ds2760_battery_suspend NULL
+#define ds2760_battery_resume NULL
+
+#endif /* CONFIG_PM */
+
+MODULE_ALIAS("platform:ds2760-battery");
+
+static struct platform_driver ds2760_battery_driver = {
+ .driver = {
+ .name = "ds2760-battery",
+ },
+ .probe = ds2760_battery_probe,
+ .remove = ds2760_battery_remove,
+ .suspend = ds2760_battery_suspend,
+ .resume = ds2760_battery_resume,
+};
+
+module_platform_driver(ds2760_battery_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>, "
+ "Matt Reimer <mreimer@vpop.net>, "
+ "Anton Vorontsov <cbou@mail.ru>");
+MODULE_DESCRIPTION("ds2760 battery driver");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/ds2780_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/ds2780_battery.c
new file mode 100644
index 0000000..de31cae
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/ds2780_battery.c
@@ -0,0 +1,857 @@
+/*
+ * 1-wire client/driver for the Maxim/Dallas DS2780 Stand-Alone Fuel Gauge IC
+ *
+ * Copyright (C) 2010 Indesign, LLC
+ *
+ * Author: Clifton Barnes <cabarnes@indesign-llc.com>
+ *
+ * Based on ds2760_battery and ds2782_battery drivers
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/param.h>
+#include <linux/pm.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/idr.h>
+
+#include "../w1/w1.h"
+#include "../w1/slaves/w1_ds2780.h"
+
+/* Current unit measurement in uA for a 1 milli-ohm sense resistor */
+#define DS2780_CURRENT_UNITS 1563
+/* Charge unit measurement in uAh for a 1 milli-ohm sense resistor */
+#define DS2780_CHARGE_UNITS 6250
+/* Number of bytes in user EEPROM space */
+#define DS2780_USER_EEPROM_SIZE (DS2780_EEPROM_BLOCK0_END - \
+ DS2780_EEPROM_BLOCK0_START + 1)
+/* Number of bytes in parameter EEPROM space */
+#define DS2780_PARAM_EEPROM_SIZE (DS2780_EEPROM_BLOCK1_END - \
+ DS2780_EEPROM_BLOCK1_START + 1)
+
+struct ds2780_device_info {
+ struct device *dev;
+ struct power_supply bat;
+ struct device *w1_dev;
+ struct task_struct *mutex_holder;
+};
+
+enum current_types {
+ CURRENT_NOW,
+ CURRENT_AVG,
+};
+
+static const char model[] = "DS2780";
+static const char manufacturer[] = "Maxim/Dallas";
+
+static inline struct ds2780_device_info *
+to_ds2780_device_info(struct power_supply *psy)
+{
+ return container_of(psy, struct ds2780_device_info, bat);
+}
+
+static inline struct power_supply *to_power_supply(struct device *dev)
+{
+ return dev_get_drvdata(dev);
+}
+
+static inline int ds2780_battery_io(struct ds2780_device_info *dev_info,
+ char *buf, int addr, size_t count, int io)
+{
+ if (dev_info->mutex_holder == current)
+ return w1_ds2780_io_nolock(dev_info->w1_dev, buf, addr, count, io);
+ else
+ return w1_ds2780_io(dev_info->w1_dev, buf, addr, count, io);
+}
+
+static inline int ds2780_read8(struct ds2780_device_info *dev_info, u8 *val,
+ int addr)
+{
+ return ds2780_battery_io(dev_info, val, addr, sizeof(u8), 0);
+}
+
+static int ds2780_read16(struct ds2780_device_info *dev_info, s16 *val,
+ int addr)
+{
+ int ret;
+ u8 raw[2];
+
+ ret = ds2780_battery_io(dev_info, raw, addr, sizeof(raw), 0);
+ if (ret < 0)
+ return ret;
+
+ *val = (raw[0] << 8) | raw[1];
+
+ return 0;
+}
+
+static inline int ds2780_read_block(struct ds2780_device_info *dev_info,
+ u8 *val, int addr, size_t count)
+{
+ return ds2780_battery_io(dev_info, val, addr, count, 0);
+}
+
+static inline int ds2780_write(struct ds2780_device_info *dev_info, u8 *val,
+ int addr, size_t count)
+{
+ return ds2780_battery_io(dev_info, val, addr, count, 1);
+}
+
+static inline int ds2780_store_eeprom(struct device *dev, int addr)
+{
+ return w1_ds2780_eeprom_cmd(dev, addr, W1_DS2780_COPY_DATA);
+}
+
+static inline int ds2780_recall_eeprom(struct device *dev, int addr)
+{
+ return w1_ds2780_eeprom_cmd(dev, addr, W1_DS2780_RECALL_DATA);
+}
+
+static int ds2780_save_eeprom(struct ds2780_device_info *dev_info, int reg)
+{
+ int ret;
+
+ ret = ds2780_store_eeprom(dev_info->w1_dev, reg);
+ if (ret < 0)
+ return ret;
+
+ ret = ds2780_recall_eeprom(dev_info->w1_dev, reg);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+/* Set sense resistor value in mhos */
+static int ds2780_set_sense_register(struct ds2780_device_info *dev_info,
+ u8 conductance)
+{
+ int ret;
+
+ ret = ds2780_write(dev_info, &conductance,
+ DS2780_RSNSP_REG, sizeof(u8));
+ if (ret < 0)
+ return ret;
+
+ return ds2780_save_eeprom(dev_info, DS2780_RSNSP_REG);
+}
+
+/* Get RSGAIN value from 0 to 1.999 in steps of 0.001 */
+static int ds2780_get_rsgain_register(struct ds2780_device_info *dev_info,
+ u16 *rsgain)
+{
+ return ds2780_read16(dev_info, rsgain, DS2780_RSGAIN_MSB_REG);
+}
+
+/* Set RSGAIN value from 0 to 1.999 in steps of 0.001 */
+static int ds2780_set_rsgain_register(struct ds2780_device_info *dev_info,
+ u16 rsgain)
+{
+ int ret;
+ u8 raw[] = {rsgain >> 8, rsgain & 0xFF};
+
+ ret = ds2780_write(dev_info, raw,
+ DS2780_RSGAIN_MSB_REG, sizeof(raw));
+ if (ret < 0)
+ return ret;
+
+ return ds2780_save_eeprom(dev_info, DS2780_RSGAIN_MSB_REG);
+}
+
+static int ds2780_get_voltage(struct ds2780_device_info *dev_info,
+ int *voltage_uV)
+{
+ int ret;
+ s16 voltage_raw;
+
+ /*
+ * The voltage value is located in 10 bits across the voltage MSB
+ * and LSB registers in two's compliment form
+ * Sign bit of the voltage value is in bit 7 of the voltage MSB register
+ * Bits 9 - 3 of the voltage value are in bits 6 - 0 of the
+ * voltage MSB register
+ * Bits 2 - 0 of the voltage value are in bits 7 - 5 of the
+ * voltage LSB register
+ */
+ ret = ds2780_read16(dev_info, &voltage_raw,
+ DS2780_VOLT_MSB_REG);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * DS2780 reports voltage in units of 4.88mV, but the battery class
+ * reports in units of uV, so convert by multiplying by 4880.
+ */
+ *voltage_uV = (voltage_raw / 32) * 4880;
+ return 0;
+}
+
+static int ds2780_get_temperature(struct ds2780_device_info *dev_info,
+ int *temperature)
+{
+ int ret;
+ s16 temperature_raw;
+
+ /*
+ * The temperature value is located in 10 bits across the temperature
+ * MSB and LSB registers in two's compliment form
+ * Sign bit of the temperature value is in bit 7 of the temperature
+ * MSB register
+ * Bits 9 - 3 of the temperature value are in bits 6 - 0 of the
+ * temperature MSB register
+ * Bits 2 - 0 of the temperature value are in bits 7 - 5 of the
+ * temperature LSB register
+ */
+ ret = ds2780_read16(dev_info, &temperature_raw,
+ DS2780_TEMP_MSB_REG);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Temperature is measured in units of 0.125 degrees celcius, the
+ * power_supply class measures temperature in tenths of degrees
+ * celsius. The temperature value is stored as a 10 bit number, plus
+ * sign in the upper bits of a 16 bit register.
+ */
+ *temperature = ((temperature_raw / 32) * 125) / 100;
+ return 0;
+}
+
+static int ds2780_get_current(struct ds2780_device_info *dev_info,
+ enum current_types type, int *current_uA)
+{
+ int ret, sense_res;
+ s16 current_raw;
+ u8 sense_res_raw, reg_msb;
+
+ /*
+ * The units of measurement for current are dependent on the value of
+ * the sense resistor.
+ */
+ ret = ds2780_read8(dev_info, &sense_res_raw, DS2780_RSNSP_REG);
+ if (ret < 0)
+ return ret;
+
+ if (sense_res_raw == 0) {
+ dev_err(dev_info->dev, "sense resistor value is 0\n");
+ return -EINVAL;
+ }
+ sense_res = 1000 / sense_res_raw;
+
+ if (type == CURRENT_NOW)
+ reg_msb = DS2780_CURRENT_MSB_REG;
+ else if (type == CURRENT_AVG)
+ reg_msb = DS2780_IAVG_MSB_REG;
+ else
+ return -EINVAL;
+
+ /*
+ * The current value is located in 16 bits across the current MSB
+ * and LSB registers in two's compliment form
+ * Sign bit of the current value is in bit 7 of the current MSB register
+ * Bits 14 - 8 of the current value are in bits 6 - 0 of the current
+ * MSB register
+ * Bits 7 - 0 of the current value are in bits 7 - 0 of the current
+ * LSB register
+ */
+ ret = ds2780_read16(dev_info, ¤t_raw, reg_msb);
+ if (ret < 0)
+ return ret;
+
+ *current_uA = current_raw * (DS2780_CURRENT_UNITS / sense_res);
+ return 0;
+}
+
+static int ds2780_get_accumulated_current(struct ds2780_device_info *dev_info,
+ int *accumulated_current)
+{
+ int ret, sense_res;
+ s16 current_raw;
+ u8 sense_res_raw;
+
+ /*
+ * The units of measurement for accumulated current are dependent on
+ * the value of the sense resistor.
+ */
+ ret = ds2780_read8(dev_info, &sense_res_raw, DS2780_RSNSP_REG);
+ if (ret < 0)
+ return ret;
+
+ if (sense_res_raw == 0) {
+ dev_err(dev_info->dev, "sense resistor value is 0\n");
+ return -ENXIO;
+ }
+ sense_res = 1000 / sense_res_raw;
+
+ /*
+ * The ACR value is located in 16 bits across the ACR MSB and
+ * LSB registers
+ * Bits 15 - 8 of the ACR value are in bits 7 - 0 of the ACR
+ * MSB register
+ * Bits 7 - 0 of the ACR value are in bits 7 - 0 of the ACR
+ * LSB register
+ */
+ ret = ds2780_read16(dev_info, ¤t_raw, DS2780_ACR_MSB_REG);
+ if (ret < 0)
+ return ret;
+
+ *accumulated_current = current_raw * (DS2780_CHARGE_UNITS / sense_res);
+ return 0;
+}
+
+static int ds2780_get_capacity(struct ds2780_device_info *dev_info,
+ int *capacity)
+{
+ int ret;
+ u8 raw;
+
+ ret = ds2780_read8(dev_info, &raw, DS2780_RARC_REG);
+ if (ret < 0)
+ return ret;
+
+ *capacity = raw;
+ return raw;
+}
+
+static int ds2780_get_status(struct ds2780_device_info *dev_info, int *status)
+{
+ int ret, current_uA, capacity;
+
+ ret = ds2780_get_current(dev_info, CURRENT_NOW, ¤t_uA);
+ if (ret < 0)
+ return ret;
+
+ ret = ds2780_get_capacity(dev_info, &capacity);
+ if (ret < 0)
+ return ret;
+
+ if (capacity == 100)
+ *status = POWER_SUPPLY_STATUS_FULL;
+ else if (current_uA == 0)
+ *status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else if (current_uA < 0)
+ *status = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ *status = POWER_SUPPLY_STATUS_CHARGING;
+
+ return 0;
+}
+
+static int ds2780_get_charge_now(struct ds2780_device_info *dev_info,
+ int *charge_now)
+{
+ int ret;
+ u16 charge_raw;
+
+ /*
+ * The RAAC value is located in 16 bits across the RAAC MSB and
+ * LSB registers
+ * Bits 15 - 8 of the RAAC value are in bits 7 - 0 of the RAAC
+ * MSB register
+ * Bits 7 - 0 of the RAAC value are in bits 7 - 0 of the RAAC
+ * LSB register
+ */
+ ret = ds2780_read16(dev_info, &charge_raw, DS2780_RAAC_MSB_REG);
+ if (ret < 0)
+ return ret;
+
+ *charge_now = charge_raw * 1600;
+ return 0;
+}
+
+static int ds2780_get_control_register(struct ds2780_device_info *dev_info,
+ u8 *control_reg)
+{
+ return ds2780_read8(dev_info, control_reg, DS2780_CONTROL_REG);
+}
+
+static int ds2780_set_control_register(struct ds2780_device_info *dev_info,
+ u8 control_reg)
+{
+ int ret;
+
+ ret = ds2780_write(dev_info, &control_reg,
+ DS2780_CONTROL_REG, sizeof(u8));
+ if (ret < 0)
+ return ret;
+
+ return ds2780_save_eeprom(dev_info, DS2780_CONTROL_REG);
+}
+
+static int ds2780_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = ds2780_get_voltage(dev_info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ ret = ds2780_get_temperature(dev_info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = model;
+ break;
+
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = manufacturer;
+ break;
+
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = ds2780_get_current(dev_info, CURRENT_NOW, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ ret = ds2780_get_current(dev_info, CURRENT_AVG, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = ds2780_get_status(dev_info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = ds2780_get_capacity(dev_info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_COUNTER:
+ ret = ds2780_get_accumulated_current(dev_info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ ret = ds2780_get_charge_now(dev_info, &val->intval);
+ break;
+
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property ds2780_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CHARGE_COUNTER,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+};
+
+static ssize_t ds2780_get_pmod_enabled(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret;
+ u8 control_reg;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+
+ /* Get power mode */
+ ret = ds2780_get_control_register(dev_info, &control_reg);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n",
+ !!(control_reg & DS2780_CONTROL_REG_PMOD));
+}
+
+static ssize_t ds2780_set_pmod_enabled(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ int ret;
+ u8 control_reg, new_setting;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+
+ /* Set power mode */
+ ret = ds2780_get_control_register(dev_info, &control_reg);
+ if (ret < 0)
+ return ret;
+
+ ret = kstrtou8(buf, 0, &new_setting);
+ if (ret < 0)
+ return ret;
+
+ if ((new_setting != 0) && (new_setting != 1)) {
+ dev_err(dev_info->dev, "Invalid pmod setting (0 or 1)\n");
+ return -EINVAL;
+ }
+
+ if (new_setting)
+ control_reg |= DS2780_CONTROL_REG_PMOD;
+ else
+ control_reg &= ~DS2780_CONTROL_REG_PMOD;
+
+ ret = ds2780_set_control_register(dev_info, control_reg);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t ds2780_get_sense_resistor_value(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret;
+ u8 sense_resistor;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+
+ ret = ds2780_read8(dev_info, &sense_resistor, DS2780_RSNSP_REG);
+ if (ret < 0)
+ return ret;
+
+ ret = sprintf(buf, "%d\n", sense_resistor);
+ return ret;
+}
+
+static ssize_t ds2780_set_sense_resistor_value(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ int ret;
+ u8 new_setting;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+
+ ret = kstrtou8(buf, 0, &new_setting);
+ if (ret < 0)
+ return ret;
+
+ ret = ds2780_set_sense_register(dev_info, new_setting);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t ds2780_get_rsgain_setting(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret;
+ u16 rsgain;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+
+ ret = ds2780_get_rsgain_register(dev_info, &rsgain);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", rsgain);
+}
+
+static ssize_t ds2780_set_rsgain_setting(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ int ret;
+ u16 new_setting;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+
+ ret = kstrtou16(buf, 0, &new_setting);
+ if (ret < 0)
+ return ret;
+
+ /* Gain can only be from 0 to 1.999 in steps of .001 */
+ if (new_setting > 1999) {
+ dev_err(dev_info->dev, "Invalid rsgain setting (0 - 1999)\n");
+ return -EINVAL;
+ }
+
+ ret = ds2780_set_rsgain_register(dev_info, new_setting);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t ds2780_get_pio_pin(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret;
+ u8 sfr;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+
+ ret = ds2780_read8(dev_info, &sfr, DS2780_SFR_REG);
+ if (ret < 0)
+ return ret;
+
+ ret = sprintf(buf, "%d\n", sfr & DS2780_SFR_REG_PIOSC);
+ return ret;
+}
+
+static ssize_t ds2780_set_pio_pin(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ int ret;
+ u8 new_setting;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+
+ ret = kstrtou8(buf, 0, &new_setting);
+ if (ret < 0)
+ return ret;
+
+ if ((new_setting != 0) && (new_setting != 1)) {
+ dev_err(dev_info->dev, "Invalid pio_pin setting (0 or 1)\n");
+ return -EINVAL;
+ }
+
+ ret = ds2780_write(dev_info, &new_setting,
+ DS2780_SFR_REG, sizeof(u8));
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t ds2780_read_param_eeprom_bin(struct file *filp,
+ struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+
+ count = min_t(loff_t, count,
+ DS2780_EEPROM_BLOCK1_END -
+ DS2780_EEPROM_BLOCK1_START + 1 - off);
+
+ return ds2780_read_block(dev_info, buf,
+ DS2780_EEPROM_BLOCK1_START + off, count);
+}
+
+static ssize_t ds2780_write_param_eeprom_bin(struct file *filp,
+ struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+ int ret;
+
+ count = min_t(loff_t, count,
+ DS2780_EEPROM_BLOCK1_END -
+ DS2780_EEPROM_BLOCK1_START + 1 - off);
+
+ ret = ds2780_write(dev_info, buf,
+ DS2780_EEPROM_BLOCK1_START + off, count);
+ if (ret < 0)
+ return ret;
+
+ ret = ds2780_save_eeprom(dev_info, DS2780_EEPROM_BLOCK1_START);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static struct bin_attribute ds2780_param_eeprom_bin_attr = {
+ .attr = {
+ .name = "param_eeprom",
+ .mode = S_IRUGO | S_IWUSR,
+ },
+ .size = DS2780_EEPROM_BLOCK1_END - DS2780_EEPROM_BLOCK1_START + 1,
+ .read = ds2780_read_param_eeprom_bin,
+ .write = ds2780_write_param_eeprom_bin,
+};
+
+static ssize_t ds2780_read_user_eeprom_bin(struct file *filp,
+ struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+
+ count = min_t(loff_t, count,
+ DS2780_EEPROM_BLOCK0_END -
+ DS2780_EEPROM_BLOCK0_START + 1 - off);
+
+ return ds2780_read_block(dev_info, buf,
+ DS2780_EEPROM_BLOCK0_START + off, count);
+}
+
+static ssize_t ds2780_write_user_eeprom_bin(struct file *filp,
+ struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
+ int ret;
+
+ count = min_t(loff_t, count,
+ DS2780_EEPROM_BLOCK0_END -
+ DS2780_EEPROM_BLOCK0_START + 1 - off);
+
+ ret = ds2780_write(dev_info, buf,
+ DS2780_EEPROM_BLOCK0_START + off, count);
+ if (ret < 0)
+ return ret;
+
+ ret = ds2780_save_eeprom(dev_info, DS2780_EEPROM_BLOCK0_START);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static struct bin_attribute ds2780_user_eeprom_bin_attr = {
+ .attr = {
+ .name = "user_eeprom",
+ .mode = S_IRUGO | S_IWUSR,
+ },
+ .size = DS2780_EEPROM_BLOCK0_END - DS2780_EEPROM_BLOCK0_START + 1,
+ .read = ds2780_read_user_eeprom_bin,
+ .write = ds2780_write_user_eeprom_bin,
+};
+
+static DEVICE_ATTR(pmod_enabled, S_IRUGO | S_IWUSR, ds2780_get_pmod_enabled,
+ ds2780_set_pmod_enabled);
+static DEVICE_ATTR(sense_resistor_value, S_IRUGO | S_IWUSR,
+ ds2780_get_sense_resistor_value, ds2780_set_sense_resistor_value);
+static DEVICE_ATTR(rsgain_setting, S_IRUGO | S_IWUSR, ds2780_get_rsgain_setting,
+ ds2780_set_rsgain_setting);
+static DEVICE_ATTR(pio_pin, S_IRUGO | S_IWUSR, ds2780_get_pio_pin,
+ ds2780_set_pio_pin);
+
+
+static struct attribute *ds2780_attributes[] = {
+ &dev_attr_pmod_enabled.attr,
+ &dev_attr_sense_resistor_value.attr,
+ &dev_attr_rsgain_setting.attr,
+ &dev_attr_pio_pin.attr,
+ NULL
+};
+
+static const struct attribute_group ds2780_attr_group = {
+ .attrs = ds2780_attributes,
+};
+
+static int __devinit ds2780_battery_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+ struct ds2780_device_info *dev_info;
+
+ dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL);
+ if (!dev_info) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ platform_set_drvdata(pdev, dev_info);
+
+ dev_info->dev = &pdev->dev;
+ dev_info->w1_dev = pdev->dev.parent;
+ dev_info->bat.name = dev_name(&pdev->dev);
+ dev_info->bat.type = POWER_SUPPLY_TYPE_BATTERY;
+ dev_info->bat.properties = ds2780_battery_props;
+ dev_info->bat.num_properties = ARRAY_SIZE(ds2780_battery_props);
+ dev_info->bat.get_property = ds2780_battery_get_property;
+ dev_info->mutex_holder = current;
+
+ ret = power_supply_register(&pdev->dev, &dev_info->bat);
+ if (ret) {
+ dev_err(dev_info->dev, "failed to register battery\n");
+ goto fail_free_info;
+ }
+
+ ret = sysfs_create_group(&dev_info->bat.dev->kobj, &ds2780_attr_group);
+ if (ret) {
+ dev_err(dev_info->dev, "failed to create sysfs group\n");
+ goto fail_unregister;
+ }
+
+ ret = sysfs_create_bin_file(&dev_info->bat.dev->kobj,
+ &ds2780_param_eeprom_bin_attr);
+ if (ret) {
+ dev_err(dev_info->dev,
+ "failed to create param eeprom bin file");
+ goto fail_remove_group;
+ }
+
+ ret = sysfs_create_bin_file(&dev_info->bat.dev->kobj,
+ &ds2780_user_eeprom_bin_attr);
+ if (ret) {
+ dev_err(dev_info->dev,
+ "failed to create user eeprom bin file");
+ goto fail_remove_bin_file;
+ }
+
+ dev_info->mutex_holder = NULL;
+
+ return 0;
+
+fail_remove_bin_file:
+ sysfs_remove_bin_file(&dev_info->bat.dev->kobj,
+ &ds2780_param_eeprom_bin_attr);
+fail_remove_group:
+ sysfs_remove_group(&dev_info->bat.dev->kobj, &ds2780_attr_group);
+fail_unregister:
+ power_supply_unregister(&dev_info->bat);
+fail_free_info:
+ kfree(dev_info);
+fail:
+ return ret;
+}
+
+static int __devexit ds2780_battery_remove(struct platform_device *pdev)
+{
+ struct ds2780_device_info *dev_info = platform_get_drvdata(pdev);
+
+ dev_info->mutex_holder = current;
+
+ /* remove attributes */
+ sysfs_remove_group(&dev_info->bat.dev->kobj, &ds2780_attr_group);
+
+ power_supply_unregister(&dev_info->bat);
+
+ kfree(dev_info);
+ return 0;
+}
+
+static struct platform_driver ds2780_battery_driver = {
+ .driver = {
+ .name = "ds2780-battery",
+ },
+ .probe = ds2780_battery_probe,
+ .remove = __devexit_p(ds2780_battery_remove),
+};
+
+module_platform_driver(ds2780_battery_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Clifton Barnes <cabarnes@indesign-llc.com>");
+MODULE_DESCRIPTION("Maxim/Dallas DS2780 Stand-Alone Fuel Gauage IC driver");
+MODULE_ALIAS("platform:ds2780-battery");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/ds2781_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/ds2781_battery.c
new file mode 100644
index 0000000..ca0d653
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/ds2781_battery.c
@@ -0,0 +1,874 @@
+/*
+ * 1-wire client/driver for the Maxim/Dallas DS2781 Stand-Alone Fuel Gauge IC
+ *
+ * Author: Renata Sayakhova <renata@oktetlabs.ru>
+ *
+ * Based on ds2780_battery drivers
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/param.h>
+#include <linux/pm.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/idr.h>
+
+#include "../w1/w1.h"
+#include "../w1/slaves/w1_ds2781.h"
+
+/* Current unit measurement in uA for a 1 milli-ohm sense resistor */
+#define DS2781_CURRENT_UNITS 1563
+/* Charge unit measurement in uAh for a 1 milli-ohm sense resistor */
+#define DS2781_CHARGE_UNITS 6250
+/* Number of bytes in user EEPROM space */
+#define DS2781_USER_EEPROM_SIZE (DS2781_EEPROM_BLOCK0_END - \
+ DS2781_EEPROM_BLOCK0_START + 1)
+/* Number of bytes in parameter EEPROM space */
+#define DS2781_PARAM_EEPROM_SIZE (DS2781_EEPROM_BLOCK1_END - \
+ DS2781_EEPROM_BLOCK1_START + 1)
+
+struct ds2781_device_info {
+ struct device *dev;
+ struct power_supply bat;
+ struct device *w1_dev;
+ struct task_struct *mutex_holder;
+};
+
+enum current_types {
+ CURRENT_NOW,
+ CURRENT_AVG,
+};
+
+static const char model[] = "DS2781";
+static const char manufacturer[] = "Maxim/Dallas";
+
+static inline struct ds2781_device_info *
+to_ds2781_device_info(struct power_supply *psy)
+{
+ return container_of(psy, struct ds2781_device_info, bat);
+}
+
+static inline struct power_supply *to_power_supply(struct device *dev)
+{
+ return dev_get_drvdata(dev);
+}
+
+static inline int ds2781_battery_io(struct ds2781_device_info *dev_info,
+ char *buf, int addr, size_t count, int io)
+{
+ if (dev_info->mutex_holder == current)
+ return w1_ds2781_io_nolock(dev_info->w1_dev, buf, addr,
+ count, io);
+ else
+ return w1_ds2781_io(dev_info->w1_dev, buf, addr, count, io);
+}
+
+int w1_ds2781_read(struct ds2781_device_info *dev_info, char *buf,
+ int addr, size_t count)
+{
+ return ds2781_battery_io(dev_info, buf, addr, count, 0);
+}
+
+static inline int ds2781_read8(struct ds2781_device_info *dev_info, u8 *val,
+ int addr)
+{
+ return ds2781_battery_io(dev_info, val, addr, sizeof(u8), 0);
+}
+
+static int ds2781_read16(struct ds2781_device_info *dev_info, s16 *val,
+ int addr)
+{
+ int ret;
+ u8 raw[2];
+
+ ret = ds2781_battery_io(dev_info, raw, addr, sizeof(raw), 0);
+ if (ret < 0)
+ return ret;
+
+ *val = (raw[0] << 8) | raw[1];
+
+ return 0;
+}
+
+static inline int ds2781_read_block(struct ds2781_device_info *dev_info,
+ u8 *val, int addr, size_t count)
+{
+ return ds2781_battery_io(dev_info, val, addr, count, 0);
+}
+
+static inline int ds2781_write(struct ds2781_device_info *dev_info, u8 *val,
+ int addr, size_t count)
+{
+ return ds2781_battery_io(dev_info, val, addr, count, 1);
+}
+
+static inline int ds2781_store_eeprom(struct device *dev, int addr)
+{
+ return w1_ds2781_eeprom_cmd(dev, addr, W1_DS2781_COPY_DATA);
+}
+
+static inline int ds2781_recall_eeprom(struct device *dev, int addr)
+{
+ return w1_ds2781_eeprom_cmd(dev, addr, W1_DS2781_RECALL_DATA);
+}
+
+static int ds2781_save_eeprom(struct ds2781_device_info *dev_info, int reg)
+{
+ int ret;
+
+ ret = ds2781_store_eeprom(dev_info->w1_dev, reg);
+ if (ret < 0)
+ return ret;
+
+ ret = ds2781_recall_eeprom(dev_info->w1_dev, reg);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+/* Set sense resistor value in mhos */
+static int ds2781_set_sense_register(struct ds2781_device_info *dev_info,
+ u8 conductance)
+{
+ int ret;
+
+ ret = ds2781_write(dev_info, &conductance,
+ DS2781_RSNSP, sizeof(u8));
+ if (ret < 0)
+ return ret;
+
+ return ds2781_save_eeprom(dev_info, DS2781_RSNSP);
+}
+
+/* Get RSGAIN value from 0 to 1.999 in steps of 0.001 */
+static int ds2781_get_rsgain_register(struct ds2781_device_info *dev_info,
+ u16 *rsgain)
+{
+ return ds2781_read16(dev_info, rsgain, DS2781_RSGAIN_MSB);
+}
+
+/* Set RSGAIN value from 0 to 1.999 in steps of 0.001 */
+static int ds2781_set_rsgain_register(struct ds2781_device_info *dev_info,
+ u16 rsgain)
+{
+ int ret;
+ u8 raw[] = {rsgain >> 8, rsgain & 0xFF};
+
+ ret = ds2781_write(dev_info, raw,
+ DS2781_RSGAIN_MSB, sizeof(raw));
+ if (ret < 0)
+ return ret;
+
+ return ds2781_save_eeprom(dev_info, DS2781_RSGAIN_MSB);
+}
+
+static int ds2781_get_voltage(struct ds2781_device_info *dev_info,
+ int *voltage_uV)
+{
+ int ret;
+ char val[2];
+ int voltage_raw;
+
+ ret = w1_ds2781_read(dev_info, val, DS2781_VOLT_MSB, 2 * sizeof(u8));
+ if (ret < 0)
+ return ret;
+ /*
+ * The voltage value is located in 10 bits across the voltage MSB
+ * and LSB registers in two's compliment form
+ * Sign bit of the voltage value is in bit 7 of the voltage MSB register
+ * Bits 9 - 3 of the voltage value are in bits 6 - 0 of the
+ * voltage MSB register
+ * Bits 2 - 0 of the voltage value are in bits 7 - 5 of the
+ * voltage LSB register
+ */
+ voltage_raw = (val[0] << 3) |
+ (val[1] >> 5);
+
+ /* DS2781 reports voltage in units of 9.76mV, but the battery class
+ * reports in units of uV, so convert by multiplying by 9760. */
+ *voltage_uV = voltage_raw * 9760;
+
+ return 0;
+}
+
+static int ds2781_get_temperature(struct ds2781_device_info *dev_info,
+ int *temp)
+{
+ int ret;
+ char val[2];
+ int temp_raw;
+
+ ret = w1_ds2781_read(dev_info, val, DS2781_TEMP_MSB, 2 * sizeof(u8));
+ if (ret < 0)
+ return ret;
+ /*
+ * The temperature value is located in 10 bits across the temperature
+ * MSB and LSB registers in two's compliment form
+ * Sign bit of the temperature value is in bit 7 of the temperature
+ * MSB register
+ * Bits 9 - 3 of the temperature value are in bits 6 - 0 of the
+ * temperature MSB register
+ * Bits 2 - 0 of the temperature value are in bits 7 - 5 of the
+ * temperature LSB register
+ */
+ temp_raw = ((val[0]) << 3) |
+ (val[1] >> 5);
+ *temp = temp_raw + (temp_raw / 4);
+
+ return 0;
+}
+
+static int ds2781_get_current(struct ds2781_device_info *dev_info,
+ enum current_types type, int *current_uA)
+{
+ int ret, sense_res;
+ s16 current_raw;
+ u8 sense_res_raw, reg_msb;
+
+ /*
+ * The units of measurement for current are dependent on the value of
+ * the sense resistor.
+ */
+ ret = ds2781_read8(dev_info, &sense_res_raw, DS2781_RSNSP);
+ if (ret < 0)
+ return ret;
+
+ if (sense_res_raw == 0) {
+ dev_err(dev_info->dev, "sense resistor value is 0\n");
+ return -EINVAL;
+ }
+ sense_res = 1000 / sense_res_raw;
+
+ if (type == CURRENT_NOW)
+ reg_msb = DS2781_CURRENT_MSB;
+ else if (type == CURRENT_AVG)
+ reg_msb = DS2781_IAVG_MSB;
+ else
+ return -EINVAL;
+
+ /*
+ * The current value is located in 16 bits across the current MSB
+ * and LSB registers in two's compliment form
+ * Sign bit of the current value is in bit 7 of the current MSB register
+ * Bits 14 - 8 of the current value are in bits 6 - 0 of the current
+ * MSB register
+ * Bits 7 - 0 of the current value are in bits 7 - 0 of the current
+ * LSB register
+ */
+ ret = ds2781_read16(dev_info, ¤t_raw, reg_msb);
+ if (ret < 0)
+ return ret;
+
+ *current_uA = current_raw * (DS2781_CURRENT_UNITS / sense_res);
+ return 0;
+}
+
+static int ds2781_get_accumulated_current(struct ds2781_device_info *dev_info,
+ int *accumulated_current)
+{
+ int ret, sense_res;
+ s16 current_raw;
+ u8 sense_res_raw;
+
+ /*
+ * The units of measurement for accumulated current are dependent on
+ * the value of the sense resistor.
+ */
+ ret = ds2781_read8(dev_info, &sense_res_raw, DS2781_RSNSP);
+ if (ret < 0)
+ return ret;
+
+ if (sense_res_raw == 0) {
+ dev_err(dev_info->dev, "sense resistor value is 0\n");
+ return -EINVAL;
+ }
+ sense_res = 1000 / sense_res_raw;
+
+ /*
+ * The ACR value is located in 16 bits across the ACR MSB and
+ * LSB registers
+ * Bits 15 - 8 of the ACR value are in bits 7 - 0 of the ACR
+ * MSB register
+ * Bits 7 - 0 of the ACR value are in bits 7 - 0 of the ACR
+ * LSB register
+ */
+ ret = ds2781_read16(dev_info, ¤t_raw, DS2781_ACR_MSB);
+ if (ret < 0)
+ return ret;
+
+ *accumulated_current = current_raw * (DS2781_CHARGE_UNITS / sense_res);
+ return 0;
+}
+
+static int ds2781_get_capacity(struct ds2781_device_info *dev_info,
+ int *capacity)
+{
+ int ret;
+ u8 raw;
+
+ ret = ds2781_read8(dev_info, &raw, DS2781_RARC);
+ if (ret < 0)
+ return ret;
+
+ *capacity = raw;
+ return 0;
+}
+
+static int ds2781_get_status(struct ds2781_device_info *dev_info, int *status)
+{
+ int ret, current_uA, capacity;
+
+ ret = ds2781_get_current(dev_info, CURRENT_NOW, ¤t_uA);
+ if (ret < 0)
+ return ret;
+
+ ret = ds2781_get_capacity(dev_info, &capacity);
+ if (ret < 0)
+ return ret;
+
+ if (power_supply_am_i_supplied(&dev_info->bat)) {
+ if (capacity == 100)
+ *status = POWER_SUPPLY_STATUS_FULL;
+ else if (current_uA > 50000)
+ *status = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ *status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ } else {
+ *status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+ return 0;
+}
+
+static int ds2781_get_charge_now(struct ds2781_device_info *dev_info,
+ int *charge_now)
+{
+ int ret;
+ u16 charge_raw;
+
+ /*
+ * The RAAC value is located in 16 bits across the RAAC MSB and
+ * LSB registers
+ * Bits 15 - 8 of the RAAC value are in bits 7 - 0 of the RAAC
+ * MSB register
+ * Bits 7 - 0 of the RAAC value are in bits 7 - 0 of the RAAC
+ * LSB register
+ */
+ ret = ds2781_read16(dev_info, &charge_raw, DS2781_RAAC_MSB);
+ if (ret < 0)
+ return ret;
+
+ *charge_now = charge_raw * 1600;
+ return 0;
+}
+
+static int ds2781_get_control_register(struct ds2781_device_info *dev_info,
+ u8 *control_reg)
+{
+ return ds2781_read8(dev_info, control_reg, DS2781_CONTROL);
+}
+
+static int ds2781_set_control_register(struct ds2781_device_info *dev_info,
+ u8 control_reg)
+{
+ int ret;
+
+ ret = ds2781_write(dev_info, &control_reg,
+ DS2781_CONTROL, sizeof(u8));
+ if (ret < 0)
+ return ret;
+
+ return ds2781_save_eeprom(dev_info, DS2781_CONTROL);
+}
+
+static int ds2781_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = ds2781_get_voltage(dev_info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ ret = ds2781_get_temperature(dev_info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = model;
+ break;
+
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = manufacturer;
+ break;
+
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = ds2781_get_current(dev_info, CURRENT_NOW, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ ret = ds2781_get_current(dev_info, CURRENT_AVG, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = ds2781_get_status(dev_info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = ds2781_get_capacity(dev_info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_COUNTER:
+ ret = ds2781_get_accumulated_current(dev_info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ ret = ds2781_get_charge_now(dev_info, &val->intval);
+ break;
+
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property ds2781_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CHARGE_COUNTER,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+};
+
+static ssize_t ds2781_get_pmod_enabled(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret;
+ u8 control_reg;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+
+ /* Get power mode */
+ ret = ds2781_get_control_register(dev_info, &control_reg);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n",
+ !!(control_reg & DS2781_CONTROL_PMOD));
+}
+
+static ssize_t ds2781_set_pmod_enabled(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ int ret;
+ u8 control_reg, new_setting;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+
+ /* Set power mode */
+ ret = ds2781_get_control_register(dev_info, &control_reg);
+ if (ret < 0)
+ return ret;
+
+ ret = kstrtou8(buf, 0, &new_setting);
+ if (ret < 0)
+ return ret;
+
+ if ((new_setting != 0) && (new_setting != 1)) {
+ dev_err(dev_info->dev, "Invalid pmod setting (0 or 1)\n");
+ return -EINVAL;
+ }
+
+ if (new_setting)
+ control_reg |= DS2781_CONTROL_PMOD;
+ else
+ control_reg &= ~DS2781_CONTROL_PMOD;
+
+ ret = ds2781_set_control_register(dev_info, control_reg);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t ds2781_get_sense_resistor_value(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret;
+ u8 sense_resistor;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+
+ ret = ds2781_read8(dev_info, &sense_resistor, DS2781_RSNSP);
+ if (ret < 0)
+ return ret;
+
+ ret = sprintf(buf, "%d\n", sense_resistor);
+ return ret;
+}
+
+static ssize_t ds2781_set_sense_resistor_value(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ int ret;
+ u8 new_setting;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+
+ ret = kstrtou8(buf, 0, &new_setting);
+ if (ret < 0)
+ return ret;
+
+ ret = ds2781_set_sense_register(dev_info, new_setting);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t ds2781_get_rsgain_setting(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret;
+ u16 rsgain;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+
+ ret = ds2781_get_rsgain_register(dev_info, &rsgain);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", rsgain);
+}
+
+static ssize_t ds2781_set_rsgain_setting(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ int ret;
+ u16 new_setting;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+
+ ret = kstrtou16(buf, 0, &new_setting);
+ if (ret < 0)
+ return ret;
+
+ /* Gain can only be from 0 to 1.999 in steps of .001 */
+ if (new_setting > 1999) {
+ dev_err(dev_info->dev, "Invalid rsgain setting (0 - 1999)\n");
+ return -EINVAL;
+ }
+
+ ret = ds2781_set_rsgain_register(dev_info, new_setting);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t ds2781_get_pio_pin(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret;
+ u8 sfr;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+
+ ret = ds2781_read8(dev_info, &sfr, DS2781_SFR);
+ if (ret < 0)
+ return ret;
+
+ ret = sprintf(buf, "%d\n", sfr & DS2781_SFR_PIOSC);
+ return ret;
+}
+
+static ssize_t ds2781_set_pio_pin(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ int ret;
+ u8 new_setting;
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+
+ ret = kstrtou8(buf, 0, &new_setting);
+ if (ret < 0)
+ return ret;
+
+ if ((new_setting != 0) && (new_setting != 1)) {
+ dev_err(dev_info->dev, "Invalid pio_pin setting (0 or 1)\n");
+ return -EINVAL;
+ }
+
+ ret = ds2781_write(dev_info, &new_setting,
+ DS2781_SFR, sizeof(u8));
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t ds2781_read_param_eeprom_bin(struct file *filp,
+ struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+
+ count = min_t(loff_t, count,
+ DS2781_EEPROM_BLOCK1_END -
+ DS2781_EEPROM_BLOCK1_START + 1 - off);
+
+ return ds2781_read_block(dev_info, buf,
+ DS2781_EEPROM_BLOCK1_START + off, count);
+}
+
+static ssize_t ds2781_write_param_eeprom_bin(struct file *filp,
+ struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+ int ret;
+
+ count = min_t(loff_t, count,
+ DS2781_EEPROM_BLOCK1_END -
+ DS2781_EEPROM_BLOCK1_START + 1 - off);
+
+ ret = ds2781_write(dev_info, buf,
+ DS2781_EEPROM_BLOCK1_START + off, count);
+ if (ret < 0)
+ return ret;
+
+ ret = ds2781_save_eeprom(dev_info, DS2781_EEPROM_BLOCK1_START);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static struct bin_attribute ds2781_param_eeprom_bin_attr = {
+ .attr = {
+ .name = "param_eeprom",
+ .mode = S_IRUGO | S_IWUSR,
+ },
+ .size = DS2781_EEPROM_BLOCK1_END - DS2781_EEPROM_BLOCK1_START + 1,
+ .read = ds2781_read_param_eeprom_bin,
+ .write = ds2781_write_param_eeprom_bin,
+};
+
+static ssize_t ds2781_read_user_eeprom_bin(struct file *filp,
+ struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+
+ count = min_t(loff_t, count,
+ DS2781_EEPROM_BLOCK0_END -
+ DS2781_EEPROM_BLOCK0_START + 1 - off);
+
+ return ds2781_read_block(dev_info, buf,
+ DS2781_EEPROM_BLOCK0_START + off, count);
+
+}
+
+static ssize_t ds2781_write_user_eeprom_bin(struct file *filp,
+ struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct power_supply *psy = to_power_supply(dev);
+ struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
+ int ret;
+
+ count = min_t(loff_t, count,
+ DS2781_EEPROM_BLOCK0_END -
+ DS2781_EEPROM_BLOCK0_START + 1 - off);
+
+ ret = ds2781_write(dev_info, buf,
+ DS2781_EEPROM_BLOCK0_START + off, count);
+ if (ret < 0)
+ return ret;
+
+ ret = ds2781_save_eeprom(dev_info, DS2781_EEPROM_BLOCK0_START);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static struct bin_attribute ds2781_user_eeprom_bin_attr = {
+ .attr = {
+ .name = "user_eeprom",
+ .mode = S_IRUGO | S_IWUSR,
+ },
+ .size = DS2781_EEPROM_BLOCK0_END - DS2781_EEPROM_BLOCK0_START + 1,
+ .read = ds2781_read_user_eeprom_bin,
+ .write = ds2781_write_user_eeprom_bin,
+};
+
+static DEVICE_ATTR(pmod_enabled, S_IRUGO | S_IWUSR, ds2781_get_pmod_enabled,
+ ds2781_set_pmod_enabled);
+static DEVICE_ATTR(sense_resistor_value, S_IRUGO | S_IWUSR,
+ ds2781_get_sense_resistor_value, ds2781_set_sense_resistor_value);
+static DEVICE_ATTR(rsgain_setting, S_IRUGO | S_IWUSR, ds2781_get_rsgain_setting,
+ ds2781_set_rsgain_setting);
+static DEVICE_ATTR(pio_pin, S_IRUGO | S_IWUSR, ds2781_get_pio_pin,
+ ds2781_set_pio_pin);
+
+
+static struct attribute *ds2781_attributes[] = {
+ &dev_attr_pmod_enabled.attr,
+ &dev_attr_sense_resistor_value.attr,
+ &dev_attr_rsgain_setting.attr,
+ &dev_attr_pio_pin.attr,
+ NULL
+};
+
+static const struct attribute_group ds2781_attr_group = {
+ .attrs = ds2781_attributes,
+};
+
+static int __devinit ds2781_battery_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+ struct ds2781_device_info *dev_info;
+
+ dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL);
+ if (!dev_info) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ platform_set_drvdata(pdev, dev_info);
+
+ dev_info->dev = &pdev->dev;
+ dev_info->w1_dev = pdev->dev.parent;
+ dev_info->bat.name = dev_name(&pdev->dev);
+ dev_info->bat.type = POWER_SUPPLY_TYPE_BATTERY;
+ dev_info->bat.properties = ds2781_battery_props;
+ dev_info->bat.num_properties = ARRAY_SIZE(ds2781_battery_props);
+ dev_info->bat.get_property = ds2781_battery_get_property;
+ dev_info->mutex_holder = current;
+
+ ret = power_supply_register(&pdev->dev, &dev_info->bat);
+ if (ret) {
+ dev_err(dev_info->dev, "failed to register battery\n");
+ goto fail_free_info;
+ }
+
+ ret = sysfs_create_group(&dev_info->bat.dev->kobj, &ds2781_attr_group);
+ if (ret) {
+ dev_err(dev_info->dev, "failed to create sysfs group\n");
+ goto fail_unregister;
+ }
+
+ ret = sysfs_create_bin_file(&dev_info->bat.dev->kobj,
+ &ds2781_param_eeprom_bin_attr);
+ if (ret) {
+ dev_err(dev_info->dev,
+ "failed to create param eeprom bin file");
+ goto fail_remove_group;
+ }
+
+ ret = sysfs_create_bin_file(&dev_info->bat.dev->kobj,
+ &ds2781_user_eeprom_bin_attr);
+ if (ret) {
+ dev_err(dev_info->dev,
+ "failed to create user eeprom bin file");
+ goto fail_remove_bin_file;
+ }
+
+ dev_info->mutex_holder = NULL;
+
+ return 0;
+
+fail_remove_bin_file:
+ sysfs_remove_bin_file(&dev_info->bat.dev->kobj,
+ &ds2781_param_eeprom_bin_attr);
+fail_remove_group:
+ sysfs_remove_group(&dev_info->bat.dev->kobj, &ds2781_attr_group);
+fail_unregister:
+ power_supply_unregister(&dev_info->bat);
+fail_free_info:
+ kfree(dev_info);
+fail:
+ return ret;
+}
+
+static int __devexit ds2781_battery_remove(struct platform_device *pdev)
+{
+ struct ds2781_device_info *dev_info = platform_get_drvdata(pdev);
+
+ dev_info->mutex_holder = current;
+
+ /* remove attributes */
+ sysfs_remove_group(&dev_info->bat.dev->kobj, &ds2781_attr_group);
+
+ power_supply_unregister(&dev_info->bat);
+
+ kfree(dev_info);
+ return 0;
+}
+
+static struct platform_driver ds2781_battery_driver = {
+ .driver = {
+ .name = "ds2781-battery",
+ },
+ .probe = ds2781_battery_probe,
+ .remove = __devexit_p(ds2781_battery_remove),
+};
+
+static int __init ds2781_battery_init(void)
+{
+ return platform_driver_register(&ds2781_battery_driver);
+}
+
+static void __exit ds2781_battery_exit(void)
+{
+ platform_driver_unregister(&ds2781_battery_driver);
+}
+
+module_init(ds2781_battery_init);
+module_exit(ds2781_battery_exit);
+
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Renata Sayakhova <renata@oktetlabs.ru>");
+MODULE_DESCRIPTION("Maxim/Dallas DS2781 Stand-Alone Fuel Gauage IC driver");
+MODULE_ALIAS("platform:ds2781-battery");
+
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/ds2782_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/ds2782_battery.c
new file mode 100644
index 0000000..6bb6e2f
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/ds2782_battery.c
@@ -0,0 +1,410 @@
+/*
+ * I2C client/driver for the Maxim/Dallas DS2782 Stand-Alone Fuel Gauge IC
+ *
+ * Copyright (C) 2009 Bluewater Systems Ltd
+ *
+ * Author: Ryan Mallon
+ *
+ * DS2786 added by Yulia Vilensky <vilensky@compulab.co.il>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/swab.h>
+#include <linux/i2c.h>
+#include <linux/idr.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+#include <linux/ds2782_battery.h>
+
+#define DS2782_REG_RARC 0x06 /* Remaining active relative capacity */
+
+#define DS278x_REG_VOLT_MSB 0x0c
+#define DS278x_REG_TEMP_MSB 0x0a
+#define DS278x_REG_CURRENT_MSB 0x0e
+
+/* EEPROM Block */
+#define DS2782_REG_RSNSP 0x69 /* Sense resistor value */
+
+/* Current unit measurement in uA for a 1 milli-ohm sense resistor */
+#define DS2782_CURRENT_UNITS 1563
+
+#define DS2786_REG_RARC 0x02 /* Remaining active relative capacity */
+
+#define DS2786_CURRENT_UNITS 25
+
+struct ds278x_info;
+
+struct ds278x_battery_ops {
+ int (*get_battery_current)(struct ds278x_info *info, int *current_uA);
+ int (*get_battery_voltage)(struct ds278x_info *info, int *voltage_uV);
+ int (*get_battery_capacity)(struct ds278x_info *info, int *capacity);
+};
+
+#define to_ds278x_info(x) container_of(x, struct ds278x_info, battery)
+
+struct ds278x_info {
+ struct i2c_client *client;
+ struct power_supply battery;
+ struct ds278x_battery_ops *ops;
+ int id;
+ int rsns;
+};
+
+static DEFINE_IDR(battery_id);
+static DEFINE_MUTEX(battery_lock);
+
+static inline int ds278x_read_reg(struct ds278x_info *info, int reg, u8 *val)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(info->client, reg);
+ if (ret < 0) {
+ dev_err(&info->client->dev, "register read failed\n");
+ return ret;
+ }
+
+ *val = ret;
+ return 0;
+}
+
+static inline int ds278x_read_reg16(struct ds278x_info *info, int reg_msb,
+ s16 *val)
+{
+ int ret;
+
+ ret = swab16(i2c_smbus_read_word_data(info->client, reg_msb));
+ if (ret < 0) {
+ dev_err(&info->client->dev, "register read failed\n");
+ return ret;
+ }
+
+ *val = ret;
+ return 0;
+}
+
+static int ds278x_get_temp(struct ds278x_info *info, int *temp)
+{
+ s16 raw;
+ int err;
+
+ /*
+ * Temperature is measured in units of 0.125 degrees celcius, the
+ * power_supply class measures temperature in tenths of degrees
+ * celsius. The temperature value is stored as a 10 bit number, plus
+ * sign in the upper bits of a 16 bit register.
+ */
+ err = ds278x_read_reg16(info, DS278x_REG_TEMP_MSB, &raw);
+ if (err)
+ return err;
+ *temp = ((raw / 32) * 125) / 100;
+ return 0;
+}
+
+static int ds2782_get_current(struct ds278x_info *info, int *current_uA)
+{
+ int sense_res;
+ int err;
+ u8 sense_res_raw;
+ s16 raw;
+
+ /*
+ * The units of measurement for current are dependent on the value of
+ * the sense resistor.
+ */
+ err = ds278x_read_reg(info, DS2782_REG_RSNSP, &sense_res_raw);
+ if (err)
+ return err;
+ if (sense_res_raw == 0) {
+ dev_err(&info->client->dev, "sense resistor value is 0\n");
+ return -ENXIO;
+ }
+ sense_res = 1000 / sense_res_raw;
+
+ dev_dbg(&info->client->dev, "sense resistor = %d milli-ohms\n",
+ sense_res);
+ err = ds278x_read_reg16(info, DS278x_REG_CURRENT_MSB, &raw);
+ if (err)
+ return err;
+ *current_uA = raw * (DS2782_CURRENT_UNITS / sense_res);
+ return 0;
+}
+
+static int ds2782_get_voltage(struct ds278x_info *info, int *voltage_uV)
+{
+ s16 raw;
+ int err;
+
+ /*
+ * Voltage is measured in units of 4.88mV. The voltage is stored as
+ * a 10-bit number plus sign, in the upper bits of a 16-bit register
+ */
+ err = ds278x_read_reg16(info, DS278x_REG_VOLT_MSB, &raw);
+ if (err)
+ return err;
+ *voltage_uV = (raw / 32) * 4800;
+ return 0;
+}
+
+static int ds2782_get_capacity(struct ds278x_info *info, int *capacity)
+{
+ int err;
+ u8 raw;
+
+ err = ds278x_read_reg(info, DS2782_REG_RARC, &raw);
+ if (err)
+ return err;
+ *capacity = raw;
+ return 0;
+}
+
+static int ds2786_get_current(struct ds278x_info *info, int *current_uA)
+{
+ int err;
+ s16 raw;
+
+ err = ds278x_read_reg16(info, DS278x_REG_CURRENT_MSB, &raw);
+ if (err)
+ return err;
+ *current_uA = (raw / 16) * (DS2786_CURRENT_UNITS / info->rsns);
+ return 0;
+}
+
+static int ds2786_get_voltage(struct ds278x_info *info, int *voltage_uV)
+{
+ s16 raw;
+ int err;
+
+ /*
+ * Voltage is measured in units of 1.22mV. The voltage is stored as
+ * a 10-bit number plus sign, in the upper bits of a 16-bit register
+ */
+ err = ds278x_read_reg16(info, DS278x_REG_VOLT_MSB, &raw);
+ if (err)
+ return err;
+ *voltage_uV = (raw / 8) * 1220;
+ return 0;
+}
+
+static int ds2786_get_capacity(struct ds278x_info *info, int *capacity)
+{
+ int err;
+ u8 raw;
+
+ err = ds278x_read_reg(info, DS2786_REG_RARC, &raw);
+ if (err)
+ return err;
+ /* Relative capacity is displayed with resolution 0.5 % */
+ *capacity = raw/2 ;
+ return 0;
+}
+
+static int ds278x_get_status(struct ds278x_info *info, int *status)
+{
+ int err;
+ int current_uA;
+ int capacity;
+
+ err = info->ops->get_battery_current(info, ¤t_uA);
+ if (err)
+ return err;
+
+ err = info->ops->get_battery_capacity(info, &capacity);
+ if (err)
+ return err;
+
+ if (capacity == 100)
+ *status = POWER_SUPPLY_STATUS_FULL;
+ else if (current_uA == 0)
+ *status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else if (current_uA < 0)
+ *status = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ *status = POWER_SUPPLY_STATUS_CHARGING;
+
+ return 0;
+}
+
+static int ds278x_battery_get_property(struct power_supply *psy,
+ enum power_supply_property prop,
+ union power_supply_propval *val)
+{
+ struct ds278x_info *info = to_ds278x_info(psy);
+ int ret;
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = ds278x_get_status(info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = info->ops->get_battery_capacity(info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = info->ops->get_battery_voltage(info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = info->ops->get_battery_current(info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ ret = ds278x_get_temp(info, &val->intval);
+ break;
+
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property ds278x_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+};
+
+static void ds278x_power_supply_init(struct power_supply *battery)
+{
+ battery->type = POWER_SUPPLY_TYPE_BATTERY;
+ battery->properties = ds278x_battery_props;
+ battery->num_properties = ARRAY_SIZE(ds278x_battery_props);
+ battery->get_property = ds278x_battery_get_property;
+ battery->external_power_changed = NULL;
+}
+
+static int ds278x_battery_remove(struct i2c_client *client)
+{
+ struct ds278x_info *info = i2c_get_clientdata(client);
+
+ power_supply_unregister(&info->battery);
+ kfree(info->battery.name);
+
+ mutex_lock(&battery_lock);
+ idr_remove(&battery_id, info->id);
+ mutex_unlock(&battery_lock);
+
+ kfree(info);
+ return 0;
+}
+
+enum ds278x_num_id {
+ DS2782 = 0,
+ DS2786,
+};
+
+static struct ds278x_battery_ops ds278x_ops[] = {
+ [DS2782] = {
+ .get_battery_current = ds2782_get_current,
+ .get_battery_voltage = ds2782_get_voltage,
+ .get_battery_capacity = ds2782_get_capacity,
+ },
+ [DS2786] = {
+ .get_battery_current = ds2786_get_current,
+ .get_battery_voltage = ds2786_get_voltage,
+ .get_battery_capacity = ds2786_get_capacity,
+ }
+};
+
+static int ds278x_battery_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct ds278x_platform_data *pdata = client->dev.platform_data;
+ struct ds278x_info *info;
+ int ret;
+ int num;
+
+ /*
+ * ds2786 should have the sense resistor value set
+ * in the platform data
+ */
+ if (id->driver_data == DS2786 && !pdata) {
+ dev_err(&client->dev, "missing platform data for ds2786\n");
+ return -EINVAL;
+ }
+
+ /* Get an ID for this battery */
+ ret = idr_pre_get(&battery_id, GFP_KERNEL);
+ if (ret == 0) {
+ ret = -ENOMEM;
+ goto fail_id;
+ }
+
+ mutex_lock(&battery_lock);
+ ret = idr_get_new(&battery_id, client, &num);
+ mutex_unlock(&battery_lock);
+ if (ret < 0)
+ goto fail_id;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ ret = -ENOMEM;
+ goto fail_info;
+ }
+
+ info->battery.name = kasprintf(GFP_KERNEL, "%s-%d", client->name, num);
+ if (!info->battery.name) {
+ ret = -ENOMEM;
+ goto fail_name;
+ }
+
+ if (id->driver_data == DS2786)
+ info->rsns = pdata->rsns;
+
+ i2c_set_clientdata(client, info);
+ info->client = client;
+ info->id = num;
+ info->ops = &ds278x_ops[id->driver_data];
+ ds278x_power_supply_init(&info->battery);
+
+ ret = power_supply_register(&client->dev, &info->battery);
+ if (ret) {
+ dev_err(&client->dev, "failed to register battery\n");
+ goto fail_register;
+ }
+
+ return 0;
+
+fail_register:
+ kfree(info->battery.name);
+fail_name:
+ kfree(info);
+fail_info:
+ mutex_lock(&battery_lock);
+ idr_remove(&battery_id, num);
+ mutex_unlock(&battery_lock);
+fail_id:
+ return ret;
+}
+
+static const struct i2c_device_id ds278x_id[] = {
+ {"ds2782", DS2782},
+ {"ds2786", DS2786},
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, ds278x_id);
+
+static struct i2c_driver ds278x_battery_driver = {
+ .driver = {
+ .name = "ds2782-battery",
+ },
+ .probe = ds278x_battery_probe,
+ .remove = ds278x_battery_remove,
+ .id_table = ds278x_id,
+};
+module_i2c_driver(ds278x_battery_driver);
+
+MODULE_AUTHOR("Ryan Mallon");
+MODULE_DESCRIPTION("Maxim/Dallas DS2782 Stand-Alone Fuel Gauage IC driver");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/gpio-charger.c b/ap/os/linux/linux-3.4.x/drivers/power/gpio-charger.c
new file mode 100644
index 0000000..8672c91
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/gpio-charger.c
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
+ * Driver for chargers which report their online status through a GPIO pin
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+
+#include <linux/power/gpio-charger.h>
+
+struct gpio_charger {
+ const struct gpio_charger_platform_data *pdata;
+ unsigned int irq;
+
+ struct power_supply charger;
+};
+
+static irqreturn_t gpio_charger_irq(int irq, void *devid)
+{
+ struct power_supply *charger = devid;
+
+ power_supply_changed(charger);
+
+ return IRQ_HANDLED;
+}
+
+static inline struct gpio_charger *psy_to_gpio_charger(struct power_supply *psy)
+{
+ return container_of(psy, struct gpio_charger, charger);
+}
+
+static int gpio_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct gpio_charger *gpio_charger = psy_to_gpio_charger(psy);
+ const struct gpio_charger_platform_data *pdata = gpio_charger->pdata;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = gpio_get_value(pdata->gpio);
+ val->intval ^= pdata->gpio_active_low;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property gpio_charger_properties[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static int __devinit gpio_charger_probe(struct platform_device *pdev)
+{
+ const struct gpio_charger_platform_data *pdata = pdev->dev.platform_data;
+ struct gpio_charger *gpio_charger;
+ struct power_supply *charger;
+ int ret;
+ int irq;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "No platform data\n");
+ return -EINVAL;
+ }
+
+ if (!gpio_is_valid(pdata->gpio)) {
+ dev_err(&pdev->dev, "Invalid gpio pin\n");
+ return -EINVAL;
+ }
+
+ gpio_charger = kzalloc(sizeof(*gpio_charger), GFP_KERNEL);
+ if (!gpio_charger) {
+ dev_err(&pdev->dev, "Failed to alloc driver structure\n");
+ return -ENOMEM;
+ }
+
+ charger = &gpio_charger->charger;
+
+ charger->name = pdata->name ? pdata->name : "gpio-charger";
+ charger->type = pdata->type;
+ charger->properties = gpio_charger_properties;
+ charger->num_properties = ARRAY_SIZE(gpio_charger_properties);
+ charger->get_property = gpio_charger_get_property;
+ charger->supplied_to = pdata->supplied_to;
+ charger->num_supplicants = pdata->num_supplicants;
+
+ ret = gpio_request(pdata->gpio, dev_name(&pdev->dev));
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to request gpio pin: %d\n", ret);
+ goto err_free;
+ }
+ ret = gpio_direction_input(pdata->gpio);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to set gpio to input: %d\n", ret);
+ goto err_gpio_free;
+ }
+
+ gpio_charger->pdata = pdata;
+
+ ret = power_supply_register(&pdev->dev, charger);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to register power supply: %d\n",
+ ret);
+ goto err_gpio_free;
+ }
+
+ irq = gpio_to_irq(pdata->gpio);
+ if (irq > 0) {
+ ret = request_any_context_irq(irq, gpio_charger_irq,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ dev_name(&pdev->dev), charger);
+ if (ret < 0)
+ dev_warn(&pdev->dev, "Failed to request irq: %d\n", ret);
+ else
+ gpio_charger->irq = irq;
+ }
+
+ platform_set_drvdata(pdev, gpio_charger);
+
+ return 0;
+
+err_gpio_free:
+ gpio_free(pdata->gpio);
+err_free:
+ kfree(gpio_charger);
+ return ret;
+}
+
+static int __devexit gpio_charger_remove(struct platform_device *pdev)
+{
+ struct gpio_charger *gpio_charger = platform_get_drvdata(pdev);
+
+ if (gpio_charger->irq)
+ free_irq(gpio_charger->irq, &gpio_charger->charger);
+
+ power_supply_unregister(&gpio_charger->charger);
+
+ gpio_free(gpio_charger->pdata->gpio);
+
+ platform_set_drvdata(pdev, NULL);
+ kfree(gpio_charger);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int gpio_charger_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct gpio_charger *gpio_charger = platform_get_drvdata(pdev);
+
+ power_supply_changed(&gpio_charger->charger);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(gpio_charger_pm_ops, NULL, gpio_charger_resume);
+
+static struct platform_driver gpio_charger_driver = {
+ .probe = gpio_charger_probe,
+ .remove = __devexit_p(gpio_charger_remove),
+ .driver = {
+ .name = "gpio-charger",
+ .owner = THIS_MODULE,
+ .pm = &gpio_charger_pm_ops,
+ },
+};
+
+module_platform_driver(gpio_charger_driver);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("Driver for chargers which report their online status through a GPIO");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:gpio-charger");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/intel_mid_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/intel_mid_battery.c
new file mode 100644
index 0000000..d096497
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/intel_mid_battery.c
@@ -0,0 +1,786 @@
+/*
+ * intel_mid_battery.c - Intel MID PMIC Battery Driver
+ *
+ * Copyright (C) 2009 Intel Corporation
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Author: Nithish Mahalingam <nithish.mahalingam@intel.com>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/jiffies.h>
+#include <linux/param.h>
+#include <linux/device.h>
+#include <linux/spi/spi.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+
+#include <asm/intel_scu_ipc.h>
+
+#define DRIVER_NAME "pmic_battery"
+
+/*********************************************************************
+ * Generic defines
+ *********************************************************************/
+
+static int debug;
+module_param(debug, int, 0444);
+MODULE_PARM_DESC(debug, "Flag to enable PMIC Battery debug messages.");
+
+#define PMIC_BATT_DRV_INFO_UPDATED 1
+#define PMIC_BATT_PRESENT 1
+#define PMIC_BATT_NOT_PRESENT 0
+#define PMIC_USB_PRESENT PMIC_BATT_PRESENT
+#define PMIC_USB_NOT_PRESENT PMIC_BATT_NOT_PRESENT
+
+/* pmic battery register related */
+#define PMIC_BATT_CHR_SCHRGINT_ADDR 0xD2
+#define PMIC_BATT_CHR_SBATOVP_MASK (1 << 1)
+#define PMIC_BATT_CHR_STEMP_MASK (1 << 2)
+#define PMIC_BATT_CHR_SCOMP_MASK (1 << 3)
+#define PMIC_BATT_CHR_SUSBDET_MASK (1 << 4)
+#define PMIC_BATT_CHR_SBATDET_MASK (1 << 5)
+#define PMIC_BATT_CHR_SDCLMT_MASK (1 << 6)
+#define PMIC_BATT_CHR_SUSBOVP_MASK (1 << 7)
+#define PMIC_BATT_CHR_EXCPT_MASK 0x86
+
+#define PMIC_BATT_ADC_ACCCHRG_MASK (1 << 31)
+#define PMIC_BATT_ADC_ACCCHRGVAL_MASK 0x7FFFFFFF
+
+/* pmic ipc related */
+#define PMIC_BATT_CHR_IPC_FCHRG_SUBID 0x4
+#define PMIC_BATT_CHR_IPC_TCHRG_SUBID 0x6
+
+/* types of battery charging */
+enum batt_charge_type {
+ BATT_USBOTG_500MA_CHARGE,
+ BATT_USBOTG_TRICKLE_CHARGE,
+};
+
+/* valid battery events */
+enum batt_event {
+ BATT_EVENT_BATOVP_EXCPT,
+ BATT_EVENT_USBOVP_EXCPT,
+ BATT_EVENT_TEMP_EXCPT,
+ BATT_EVENT_DCLMT_EXCPT,
+ BATT_EVENT_EXCPT
+};
+
+
+/*********************************************************************
+ * Battery properties
+ *********************************************************************/
+
+/*
+ * pmic battery info
+ */
+struct pmic_power_module_info {
+ bool is_dev_info_updated;
+ struct device *dev;
+ /* pmic battery data */
+ unsigned long update_time; /* jiffies when data read */
+ unsigned int usb_is_present;
+ unsigned int batt_is_present;
+ unsigned int batt_health;
+ unsigned int usb_health;
+ unsigned int batt_status;
+ unsigned int batt_charge_now; /* in mAS */
+ unsigned int batt_prev_charge_full; /* in mAS */
+ unsigned int batt_charge_rate; /* in units per second */
+
+ struct power_supply usb;
+ struct power_supply batt;
+ int irq; /* GPE_ID or IRQ# */
+ struct workqueue_struct *monitor_wqueue;
+ struct delayed_work monitor_battery;
+ struct work_struct handler;
+};
+
+static unsigned int delay_time = 2000; /* in ms */
+
+/*
+ * pmic ac properties
+ */
+static enum power_supply_property pmic_usb_props[] = {
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_HEALTH,
+};
+
+/*
+ * pmic battery properties
+ */
+static enum power_supply_property pmic_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+};
+
+
+/*
+ * Glue functions for talking to the IPC
+ */
+
+struct battery_property {
+ u32 capacity; /* Charger capacity */
+ u8 crnt; /* Quick charge current value*/
+ u8 volt; /* Fine adjustment of constant charge voltage */
+ u8 prot; /* CHRGPROT register value */
+ u8 prot2; /* CHRGPROT1 register value */
+ u8 timer; /* Charging timer */
+};
+
+#define IPCMSG_BATTERY 0xEF
+
+/* Battery coulomb counter accumulator commands */
+#define IPC_CMD_CC_WR 0 /* Update coulomb counter value */
+#define IPC_CMD_CC_RD 1 /* Read coulomb counter value */
+#define IPC_CMD_BATTERY_PROPERTY 2 /* Read Battery property */
+
+/**
+ * pmic_scu_ipc_battery_cc_read - read battery cc
+ * @value: battery coulomb counter read
+ *
+ * Reads the battery couloumb counter value, returns 0 on success, or
+ * an error code
+ *
+ * This function may sleep. Locking for SCU accesses is handled for
+ * the caller.
+ */
+static int pmic_scu_ipc_battery_cc_read(u32 *value)
+{
+ return intel_scu_ipc_command(IPCMSG_BATTERY, IPC_CMD_CC_RD,
+ NULL, 0, value, 1);
+}
+
+/**
+ * pmic_scu_ipc_battery_property_get - fetch properties
+ * @prop: battery properties
+ *
+ * Retrieve the battery properties from the power management
+ *
+ * This function may sleep. Locking for SCU accesses is handled for
+ * the caller.
+ */
+static int pmic_scu_ipc_battery_property_get(struct battery_property *prop)
+{
+ u32 data[3];
+ u8 *p = (u8 *)&data[1];
+ int err = intel_scu_ipc_command(IPCMSG_BATTERY,
+ IPC_CMD_BATTERY_PROPERTY, NULL, 0, data, 3);
+
+ prop->capacity = data[0];
+ prop->crnt = *p++;
+ prop->volt = *p++;
+ prop->prot = *p++;
+ prop->prot2 = *p++;
+ prop->timer = *p++;
+
+ return err;
+}
+
+/**
+ * pmic_scu_ipc_set_charger - set charger
+ * @charger: charger to select
+ *
+ * Switch the charging mode for the SCU
+ */
+
+static int pmic_scu_ipc_set_charger(int charger)
+{
+ return intel_scu_ipc_simple_command(IPCMSG_BATTERY, charger);
+}
+
+/**
+ * pmic_battery_log_event - log battery events
+ * @event: battery event to be logged
+ * Context: can sleep
+ *
+ * There are multiple battery events which may be of interest to users;
+ * this battery function logs the different battery events onto the
+ * kernel log messages.
+ */
+static void pmic_battery_log_event(enum batt_event event)
+{
+ printk(KERN_WARNING "pmic-battery: ");
+ switch (event) {
+ case BATT_EVENT_BATOVP_EXCPT:
+ printk(KERN_CONT "battery overvoltage condition\n");
+ break;
+ case BATT_EVENT_USBOVP_EXCPT:
+ printk(KERN_CONT "usb charger overvoltage condition\n");
+ break;
+ case BATT_EVENT_TEMP_EXCPT:
+ printk(KERN_CONT "high battery temperature condition\n");
+ break;
+ case BATT_EVENT_DCLMT_EXCPT:
+ printk(KERN_CONT "over battery charge current condition\n");
+ break;
+ default:
+ printk(KERN_CONT "charger/battery exception %d\n", event);
+ break;
+ }
+}
+
+/**
+ * pmic_battery_read_status - read battery status information
+ * @pbi: device info structure to update the read information
+ * Context: can sleep
+ *
+ * PMIC power source information need to be updated based on the data read
+ * from the PMIC battery registers.
+ *
+ */
+static void pmic_battery_read_status(struct pmic_power_module_info *pbi)
+{
+ unsigned int update_time_intrvl;
+ unsigned int chrg_val;
+ u32 ccval;
+ u8 r8;
+ struct battery_property batt_prop;
+ int batt_present = 0;
+ int usb_present = 0;
+ int batt_exception = 0;
+
+ /* make sure the last batt_status read happened delay_time before */
+ if (pbi->update_time && time_before(jiffies, pbi->update_time +
+ msecs_to_jiffies(delay_time)))
+ return;
+
+ update_time_intrvl = jiffies_to_msecs(jiffies - pbi->update_time);
+ pbi->update_time = jiffies;
+
+ /* read coulomb counter registers and schrgint register */
+ if (pmic_scu_ipc_battery_cc_read(&ccval)) {
+ dev_warn(pbi->dev, "%s(): ipc config cmd failed\n",
+ __func__);
+ return;
+ }
+
+ if (intel_scu_ipc_ioread8(PMIC_BATT_CHR_SCHRGINT_ADDR, &r8)) {
+ dev_warn(pbi->dev, "%s(): ipc pmic read failed\n",
+ __func__);
+ return;
+ }
+
+ /*
+ * set pmic_power_module_info members based on pmic register values
+ * read.
+ */
+
+ /* set batt_is_present */
+ if (r8 & PMIC_BATT_CHR_SBATDET_MASK) {
+ pbi->batt_is_present = PMIC_BATT_PRESENT;
+ batt_present = 1;
+ } else {
+ pbi->batt_is_present = PMIC_BATT_NOT_PRESENT;
+ pbi->batt_health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ pbi->batt_status = POWER_SUPPLY_STATUS_UNKNOWN;
+ }
+
+ /* set batt_health */
+ if (batt_present) {
+ if (r8 & PMIC_BATT_CHR_SBATOVP_MASK) {
+ pbi->batt_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ pbi->batt_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ pmic_battery_log_event(BATT_EVENT_BATOVP_EXCPT);
+ batt_exception = 1;
+ } else if (r8 & PMIC_BATT_CHR_STEMP_MASK) {
+ pbi->batt_health = POWER_SUPPLY_HEALTH_OVERHEAT;
+ pbi->batt_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ pmic_battery_log_event(BATT_EVENT_TEMP_EXCPT);
+ batt_exception = 1;
+ } else {
+ pbi->batt_health = POWER_SUPPLY_HEALTH_GOOD;
+ if (r8 & PMIC_BATT_CHR_SDCLMT_MASK) {
+ /* PMIC will change charging current automatically */
+ pmic_battery_log_event(BATT_EVENT_DCLMT_EXCPT);
+ }
+ }
+ }
+
+ /* set usb_is_present */
+ if (r8 & PMIC_BATT_CHR_SUSBDET_MASK) {
+ pbi->usb_is_present = PMIC_USB_PRESENT;
+ usb_present = 1;
+ } else {
+ pbi->usb_is_present = PMIC_USB_NOT_PRESENT;
+ pbi->usb_health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ }
+
+ if (usb_present) {
+ if (r8 & PMIC_BATT_CHR_SUSBOVP_MASK) {
+ pbi->usb_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ pmic_battery_log_event(BATT_EVENT_USBOVP_EXCPT);
+ } else {
+ pbi->usb_health = POWER_SUPPLY_HEALTH_GOOD;
+ }
+ }
+
+ chrg_val = ccval & PMIC_BATT_ADC_ACCCHRGVAL_MASK;
+
+ /* set batt_prev_charge_full to battery capacity the first time */
+ if (!pbi->is_dev_info_updated) {
+ if (pmic_scu_ipc_battery_property_get(&batt_prop)) {
+ dev_warn(pbi->dev, "%s(): ipc config cmd failed\n",
+ __func__);
+ return;
+ }
+ pbi->batt_prev_charge_full = batt_prop.capacity;
+ }
+
+ /* set batt_status */
+ if (batt_present && !batt_exception) {
+ if (r8 & PMIC_BATT_CHR_SCOMP_MASK) {
+ pbi->batt_status = POWER_SUPPLY_STATUS_FULL;
+ pbi->batt_prev_charge_full = chrg_val;
+ } else if (ccval & PMIC_BATT_ADC_ACCCHRG_MASK) {
+ pbi->batt_status = POWER_SUPPLY_STATUS_DISCHARGING;
+ } else {
+ pbi->batt_status = POWER_SUPPLY_STATUS_CHARGING;
+ }
+ }
+
+ /* set batt_charge_rate */
+ if (pbi->is_dev_info_updated && batt_present && !batt_exception) {
+ if (pbi->batt_status == POWER_SUPPLY_STATUS_DISCHARGING) {
+ if (pbi->batt_charge_now - chrg_val) {
+ pbi->batt_charge_rate = ((pbi->batt_charge_now -
+ chrg_val) * 1000 * 60) /
+ update_time_intrvl;
+ }
+ } else if (pbi->batt_status == POWER_SUPPLY_STATUS_CHARGING) {
+ if (chrg_val - pbi->batt_charge_now) {
+ pbi->batt_charge_rate = ((chrg_val -
+ pbi->batt_charge_now) * 1000 * 60) /
+ update_time_intrvl;
+ }
+ } else
+ pbi->batt_charge_rate = 0;
+ } else {
+ pbi->batt_charge_rate = -1;
+ }
+
+ /* batt_charge_now */
+ if (batt_present && !batt_exception)
+ pbi->batt_charge_now = chrg_val;
+ else
+ pbi->batt_charge_now = -1;
+
+ pbi->is_dev_info_updated = PMIC_BATT_DRV_INFO_UPDATED;
+}
+
+/**
+ * pmic_usb_get_property - usb power source get property
+ * @psy: usb power supply context
+ * @psp: usb power source property
+ * @val: usb power source property value
+ * Context: can sleep
+ *
+ * PMIC usb power source property needs to be provided to power_supply
+ * subsytem for it to provide the information to users.
+ */
+static int pmic_usb_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct pmic_power_module_info *pbi = container_of(psy,
+ struct pmic_power_module_info, usb);
+
+ /* update pmic_power_module_info members */
+ pmic_battery_read_status(pbi);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = pbi->usb_is_present;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ val->intval = pbi->usb_health;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static inline unsigned long mAStouAh(unsigned long v)
+{
+ /* seconds to hours, mA to µA */
+ return (v * 1000) / 3600;
+}
+
+/**
+ * pmic_battery_get_property - battery power source get property
+ * @psy: battery power supply context
+ * @psp: battery power source property
+ * @val: battery power source property value
+ * Context: can sleep
+ *
+ * PMIC battery power source property needs to be provided to power_supply
+ * subsytem for it to provide the information to users.
+ */
+static int pmic_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct pmic_power_module_info *pbi = container_of(psy,
+ struct pmic_power_module_info, batt);
+
+ /* update pmic_power_module_info members */
+ pmic_battery_read_status(pbi);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = pbi->batt_status;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ val->intval = pbi->batt_health;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = pbi->batt_is_present;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ val->intval = mAStouAh(pbi->batt_charge_now);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ val->intval = mAStouAh(pbi->batt_prev_charge_full);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/**
+ * pmic_battery_monitor - monitor battery status
+ * @work: work structure
+ * Context: can sleep
+ *
+ * PMIC battery status needs to be monitored for any change
+ * and information needs to be frequently updated.
+ */
+static void pmic_battery_monitor(struct work_struct *work)
+{
+ struct pmic_power_module_info *pbi = container_of(work,
+ struct pmic_power_module_info, monitor_battery.work);
+
+ /* update pmic_power_module_info members */
+ pmic_battery_read_status(pbi);
+ queue_delayed_work(pbi->monitor_wqueue, &pbi->monitor_battery, HZ * 10);
+}
+
+/**
+ * pmic_battery_set_charger - set battery charger
+ * @pbi: device info structure
+ * @chrg: charge mode to set battery charger in
+ * Context: can sleep
+ *
+ * PMIC battery charger needs to be enabled based on the usb charge
+ * capabilities connected to the platform.
+ */
+static int pmic_battery_set_charger(struct pmic_power_module_info *pbi,
+ enum batt_charge_type chrg)
+{
+ int retval;
+
+ /* set usblmt bits and chrgcntl register bits appropriately */
+ switch (chrg) {
+ case BATT_USBOTG_500MA_CHARGE:
+ retval = pmic_scu_ipc_set_charger(PMIC_BATT_CHR_IPC_FCHRG_SUBID);
+ break;
+ case BATT_USBOTG_TRICKLE_CHARGE:
+ retval = pmic_scu_ipc_set_charger(PMIC_BATT_CHR_IPC_TCHRG_SUBID);
+ break;
+ default:
+ dev_warn(pbi->dev, "%s(): out of range usb charger "
+ "charge detected\n", __func__);
+ return -EINVAL;
+ }
+
+ if (retval) {
+ dev_warn(pbi->dev, "%s(): ipc pmic read failed\n",
+ __func__);
+ return retval;
+ }
+
+ return 0;
+}
+
+/**
+ * pmic_battery_interrupt_handler - pmic battery interrupt handler
+ * Context: interrupt context
+ *
+ * PMIC battery interrupt handler which will be called with either
+ * battery full condition occurs or usb otg & battery connect
+ * condition occurs.
+ */
+static irqreturn_t pmic_battery_interrupt_handler(int id, void *dev)
+{
+ struct pmic_power_module_info *pbi = dev;
+
+ schedule_work(&pbi->handler);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * pmic_battery_handle_intrpt - pmic battery service interrupt
+ * @work: work structure
+ * Context: can sleep
+ *
+ * PMIC battery needs to either update the battery status as full
+ * if it detects battery full condition caused the interrupt or needs
+ * to enable battery charger if it detects usb and battery detect
+ * caused the source of interrupt.
+ */
+static void pmic_battery_handle_intrpt(struct work_struct *work)
+{
+ struct pmic_power_module_info *pbi = container_of(work,
+ struct pmic_power_module_info, handler);
+ enum batt_charge_type chrg;
+ u8 r8;
+
+ if (intel_scu_ipc_ioread8(PMIC_BATT_CHR_SCHRGINT_ADDR, &r8)) {
+ dev_warn(pbi->dev, "%s(): ipc pmic read failed\n",
+ __func__);
+ return;
+ }
+ /* find the cause of the interrupt */
+ if (r8 & PMIC_BATT_CHR_SBATDET_MASK) {
+ pbi->batt_is_present = PMIC_BATT_PRESENT;
+ } else {
+ pbi->batt_is_present = PMIC_BATT_NOT_PRESENT;
+ pbi->batt_health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ pbi->batt_status = POWER_SUPPLY_STATUS_UNKNOWN;
+ return;
+ }
+
+ if (r8 & PMIC_BATT_CHR_EXCPT_MASK) {
+ pbi->batt_health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ pbi->batt_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ pbi->usb_health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ pmic_battery_log_event(BATT_EVENT_EXCPT);
+ return;
+ } else {
+ pbi->batt_health = POWER_SUPPLY_HEALTH_GOOD;
+ pbi->usb_health = POWER_SUPPLY_HEALTH_GOOD;
+ }
+
+ if (r8 & PMIC_BATT_CHR_SCOMP_MASK) {
+ u32 ccval;
+ pbi->batt_status = POWER_SUPPLY_STATUS_FULL;
+
+ if (pmic_scu_ipc_battery_cc_read(&ccval)) {
+ dev_warn(pbi->dev, "%s(): ipc config cmd "
+ "failed\n", __func__);
+ return;
+ }
+ pbi->batt_prev_charge_full = ccval &
+ PMIC_BATT_ADC_ACCCHRGVAL_MASK;
+ return;
+ }
+
+ if (r8 & PMIC_BATT_CHR_SUSBDET_MASK) {
+ pbi->usb_is_present = PMIC_USB_PRESENT;
+ } else {
+ pbi->usb_is_present = PMIC_USB_NOT_PRESENT;
+ pbi->usb_health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ return;
+ }
+
+ /* setup battery charging */
+
+#if 0
+ /* check usb otg power capability and set charger accordingly */
+ retval = langwell_udc_maxpower(&power);
+ if (retval) {
+ dev_warn(pbi->dev,
+ "%s(): usb otg power query failed with error code %d\n",
+ __func__, retval);
+ return;
+ }
+
+ if (power >= 500)
+ chrg = BATT_USBOTG_500MA_CHARGE;
+ else
+#endif
+ chrg = BATT_USBOTG_TRICKLE_CHARGE;
+
+ /* enable battery charging */
+ if (pmic_battery_set_charger(pbi, chrg)) {
+ dev_warn(pbi->dev,
+ "%s(): failed to set up battery charging\n", __func__);
+ return;
+ }
+
+ dev_dbg(pbi->dev,
+ "pmic-battery: %s() - setting up battery charger successful\n",
+ __func__);
+}
+
+/**
+ * pmic_battery_probe - pmic battery initialize
+ * @irq: pmic battery device irq
+ * @dev: pmic battery device structure
+ * Context: can sleep
+ *
+ * PMIC battery initializes its internal data structue and other
+ * infrastructure components for it to work as expected.
+ */
+static __devinit int probe(int irq, struct device *dev)
+{
+ int retval = 0;
+ struct pmic_power_module_info *pbi;
+
+ dev_dbg(dev, "pmic-battery: found pmic battery device\n");
+
+ pbi = kzalloc(sizeof(*pbi), GFP_KERNEL);
+ if (!pbi) {
+ dev_err(dev, "%s(): memory allocation failed\n",
+ __func__);
+ return -ENOMEM;
+ }
+
+ pbi->dev = dev;
+ pbi->irq = irq;
+ dev_set_drvdata(dev, pbi);
+
+ /* initialize all required framework before enabling interrupts */
+ INIT_WORK(&pbi->handler, pmic_battery_handle_intrpt);
+ INIT_DELAYED_WORK(&pbi->monitor_battery, pmic_battery_monitor);
+ pbi->monitor_wqueue =
+ create_singlethread_workqueue(dev_name(dev));
+ if (!pbi->monitor_wqueue) {
+ dev_err(dev, "%s(): wqueue init failed\n", __func__);
+ retval = -ESRCH;
+ goto wqueue_failed;
+ }
+
+ /* register interrupt */
+ retval = request_irq(pbi->irq, pmic_battery_interrupt_handler,
+ 0, DRIVER_NAME, pbi);
+ if (retval) {
+ dev_err(dev, "%s(): cannot get IRQ\n", __func__);
+ goto requestirq_failed;
+ }
+
+ /* register pmic-batt with power supply subsystem */
+ pbi->batt.name = "pmic-batt";
+ pbi->batt.type = POWER_SUPPLY_TYPE_BATTERY;
+ pbi->batt.properties = pmic_battery_props;
+ pbi->batt.num_properties = ARRAY_SIZE(pmic_battery_props);
+ pbi->batt.get_property = pmic_battery_get_property;
+ retval = power_supply_register(dev, &pbi->batt);
+ if (retval) {
+ dev_err(dev,
+ "%s(): failed to register pmic battery device with power supply subsystem\n",
+ __func__);
+ goto power_reg_failed;
+ }
+
+ dev_dbg(dev, "pmic-battery: %s() - pmic battery device "
+ "registration with power supply subsystem successful\n",
+ __func__);
+
+ queue_delayed_work(pbi->monitor_wqueue, &pbi->monitor_battery, HZ * 1);
+
+ /* register pmic-usb with power supply subsystem */
+ pbi->usb.name = "pmic-usb";
+ pbi->usb.type = POWER_SUPPLY_TYPE_USB;
+ pbi->usb.properties = pmic_usb_props;
+ pbi->usb.num_properties = ARRAY_SIZE(pmic_usb_props);
+ pbi->usb.get_property = pmic_usb_get_property;
+ retval = power_supply_register(dev, &pbi->usb);
+ if (retval) {
+ dev_err(dev,
+ "%s(): failed to register pmic usb device with power supply subsystem\n",
+ __func__);
+ goto power_reg_failed_1;
+ }
+
+ if (debug)
+ printk(KERN_INFO "pmic-battery: %s() - pmic usb device "
+ "registration with power supply subsystem successful\n",
+ __func__);
+
+ return retval;
+
+power_reg_failed_1:
+ power_supply_unregister(&pbi->batt);
+power_reg_failed:
+ cancel_delayed_work_sync(&pbi->monitor_battery);
+requestirq_failed:
+ destroy_workqueue(pbi->monitor_wqueue);
+wqueue_failed:
+ kfree(pbi);
+
+ return retval;
+}
+
+static int __devinit platform_pmic_battery_probe(struct platform_device *pdev)
+{
+ return probe(pdev->id, &pdev->dev);
+}
+
+/**
+ * pmic_battery_remove - pmic battery finalize
+ * @dev: pmic battery device structure
+ * Context: can sleep
+ *
+ * PMIC battery finalizes its internal data structue and other
+ * infrastructure components that it initialized in
+ * pmic_battery_probe.
+ */
+
+static int __devexit platform_pmic_battery_remove(struct platform_device *pdev)
+{
+ struct pmic_power_module_info *pbi = dev_get_drvdata(&pdev->dev);
+
+ free_irq(pbi->irq, pbi);
+ cancel_delayed_work_sync(&pbi->monitor_battery);
+ destroy_workqueue(pbi->monitor_wqueue);
+
+ power_supply_unregister(&pbi->usb);
+ power_supply_unregister(&pbi->batt);
+
+ cancel_work_sync(&pbi->handler);
+ kfree(pbi);
+ return 0;
+}
+
+static struct platform_driver platform_pmic_battery_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = platform_pmic_battery_probe,
+ .remove = __devexit_p(platform_pmic_battery_remove),
+};
+
+module_platform_driver(platform_pmic_battery_driver);
+
+MODULE_AUTHOR("Nithish Mahalingam <nithish.mahalingam@intel.com>");
+MODULE_DESCRIPTION("Intel Moorestown PMIC Battery Driver");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/isp1704_charger.c b/ap/os/linux/linux-3.4.x/drivers/power/isp1704_charger.c
new file mode 100644
index 0000000..39eb50f
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/isp1704_charger.c
@@ -0,0 +1,513 @@
+/*
+ * ISP1704 USB Charger Detection driver
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/sysfs.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/delay.h>
+
+#include <linux/usb/otg.h>
+#include <linux/usb/ulpi.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/power/isp1704_charger.h>
+
+/* Vendor specific Power Control register */
+#define ISP1704_PWR_CTRL 0x3d
+#define ISP1704_PWR_CTRL_SWCTRL (1 << 0)
+#define ISP1704_PWR_CTRL_DET_COMP (1 << 1)
+#define ISP1704_PWR_CTRL_BVALID_RISE (1 << 2)
+#define ISP1704_PWR_CTRL_BVALID_FALL (1 << 3)
+#define ISP1704_PWR_CTRL_DP_WKPU_EN (1 << 4)
+#define ISP1704_PWR_CTRL_VDAT_DET (1 << 5)
+#define ISP1704_PWR_CTRL_DPVSRC_EN (1 << 6)
+#define ISP1704_PWR_CTRL_HWDETECT (1 << 7)
+
+#define NXP_VENDOR_ID 0x04cc
+
+static u16 isp170x_id[] = {
+ 0x1704,
+ 0x1707,
+};
+
+struct isp1704_charger {
+ struct device *dev;
+ struct power_supply psy;
+ struct usb_phy *phy;
+ struct notifier_block nb;
+ struct work_struct work;
+
+ /* properties */
+ char model[8];
+ unsigned present:1;
+ unsigned online:1;
+ unsigned current_max;
+
+ /* temp storage variables */
+ unsigned long event;
+ unsigned max_power;
+};
+
+static inline int isp1704_read(struct isp1704_charger *isp, u32 reg)
+{
+ return usb_phy_io_read(isp->phy, reg);
+}
+
+static inline int isp1704_write(struct isp1704_charger *isp, u32 val, u32 reg)
+{
+ return usb_phy_io_write(isp->phy, val, reg);
+}
+
+/*
+ * Disable/enable the power from the isp1704 if a function for it
+ * has been provided with platform data.
+ */
+static void isp1704_charger_set_power(struct isp1704_charger *isp, bool on)
+{
+ struct isp1704_charger_data *board = isp->dev->platform_data;
+
+ if (board && board->set_power)
+ board->set_power(on);
+}
+
+/*
+ * Determine is the charging port DCP (dedicated charger) or CDP (Host/HUB
+ * chargers).
+ *
+ * REVISIT: The method is defined in Battery Charging Specification and is
+ * applicable to any ULPI transceiver. Nothing isp170x specific here.
+ */
+static inline int isp1704_charger_type(struct isp1704_charger *isp)
+{
+ u8 reg;
+ u8 func_ctrl;
+ u8 otg_ctrl;
+ int type = POWER_SUPPLY_TYPE_USB_DCP;
+
+ func_ctrl = isp1704_read(isp, ULPI_FUNC_CTRL);
+ otg_ctrl = isp1704_read(isp, ULPI_OTG_CTRL);
+
+ /* disable pulldowns */
+ reg = ULPI_OTG_CTRL_DM_PULLDOWN | ULPI_OTG_CTRL_DP_PULLDOWN;
+ isp1704_write(isp, ULPI_CLR(ULPI_OTG_CTRL), reg);
+
+ /* full speed */
+ isp1704_write(isp, ULPI_CLR(ULPI_FUNC_CTRL),
+ ULPI_FUNC_CTRL_XCVRSEL_MASK);
+ isp1704_write(isp, ULPI_SET(ULPI_FUNC_CTRL),
+ ULPI_FUNC_CTRL_FULL_SPEED);
+
+ /* Enable strong pull-up on DP (1.5K) and reset */
+ reg = ULPI_FUNC_CTRL_TERMSELECT | ULPI_FUNC_CTRL_RESET;
+ isp1704_write(isp, ULPI_SET(ULPI_FUNC_CTRL), reg);
+ usleep_range(1000, 2000);
+
+ reg = isp1704_read(isp, ULPI_DEBUG);
+ if ((reg & 3) != 3)
+ type = POWER_SUPPLY_TYPE_USB_CDP;
+
+ /* recover original state */
+ isp1704_write(isp, ULPI_FUNC_CTRL, func_ctrl);
+ isp1704_write(isp, ULPI_OTG_CTRL, otg_ctrl);
+
+ return type;
+}
+
+/*
+ * ISP1704 detects PS/2 adapters as charger. To make sure the detected charger
+ * is actually a dedicated charger, the following steps need to be taken.
+ */
+static inline int isp1704_charger_verify(struct isp1704_charger *isp)
+{
+ int ret = 0;
+ u8 r;
+
+ /* Reset the transceiver */
+ r = isp1704_read(isp, ULPI_FUNC_CTRL);
+ r |= ULPI_FUNC_CTRL_RESET;
+ isp1704_write(isp, ULPI_FUNC_CTRL, r);
+ usleep_range(1000, 2000);
+
+ /* Set normal mode */
+ r &= ~(ULPI_FUNC_CTRL_RESET | ULPI_FUNC_CTRL_OPMODE_MASK);
+ isp1704_write(isp, ULPI_FUNC_CTRL, r);
+
+ /* Clear the DP and DM pull-down bits */
+ r = ULPI_OTG_CTRL_DP_PULLDOWN | ULPI_OTG_CTRL_DM_PULLDOWN;
+ isp1704_write(isp, ULPI_CLR(ULPI_OTG_CTRL), r);
+
+ /* Enable strong pull-up on DP (1.5K) and reset */
+ r = ULPI_FUNC_CTRL_TERMSELECT | ULPI_FUNC_CTRL_RESET;
+ isp1704_write(isp, ULPI_SET(ULPI_FUNC_CTRL), r);
+ usleep_range(1000, 2000);
+
+ /* Read the line state */
+ if (!isp1704_read(isp, ULPI_DEBUG)) {
+ /* Disable strong pull-up on DP (1.5K) */
+ isp1704_write(isp, ULPI_CLR(ULPI_FUNC_CTRL),
+ ULPI_FUNC_CTRL_TERMSELECT);
+ return 1;
+ }
+
+ /* Is it a charger or PS/2 connection */
+
+ /* Enable weak pull-up resistor on DP */
+ isp1704_write(isp, ULPI_SET(ISP1704_PWR_CTRL),
+ ISP1704_PWR_CTRL_DP_WKPU_EN);
+
+ /* Disable strong pull-up on DP (1.5K) */
+ isp1704_write(isp, ULPI_CLR(ULPI_FUNC_CTRL),
+ ULPI_FUNC_CTRL_TERMSELECT);
+
+ /* Enable weak pull-down resistor on DM */
+ isp1704_write(isp, ULPI_SET(ULPI_OTG_CTRL),
+ ULPI_OTG_CTRL_DM_PULLDOWN);
+
+ /* It's a charger if the line states are clear */
+ if (!(isp1704_read(isp, ULPI_DEBUG)))
+ ret = 1;
+
+ /* Disable weak pull-up resistor on DP */
+ isp1704_write(isp, ULPI_CLR(ISP1704_PWR_CTRL),
+ ISP1704_PWR_CTRL_DP_WKPU_EN);
+
+ return ret;
+}
+
+static inline int isp1704_charger_detect(struct isp1704_charger *isp)
+{
+ unsigned long timeout;
+ u8 pwr_ctrl;
+ int ret = 0;
+
+ pwr_ctrl = isp1704_read(isp, ISP1704_PWR_CTRL);
+
+ /* set SW control bit in PWR_CTRL register */
+ isp1704_write(isp, ISP1704_PWR_CTRL,
+ ISP1704_PWR_CTRL_SWCTRL);
+
+ /* enable manual charger detection */
+ isp1704_write(isp, ULPI_SET(ISP1704_PWR_CTRL),
+ ISP1704_PWR_CTRL_SWCTRL
+ | ISP1704_PWR_CTRL_DPVSRC_EN);
+ usleep_range(1000, 2000);
+
+ timeout = jiffies + msecs_to_jiffies(300);
+ do {
+ /* Check if there is a charger */
+ if (isp1704_read(isp, ISP1704_PWR_CTRL)
+ & ISP1704_PWR_CTRL_VDAT_DET) {
+ ret = isp1704_charger_verify(isp);
+ break;
+ }
+ } while (!time_after(jiffies, timeout) && isp->online);
+
+ /* recover original state */
+ isp1704_write(isp, ISP1704_PWR_CTRL, pwr_ctrl);
+
+ return ret;
+}
+
+static void isp1704_charger_work(struct work_struct *data)
+{
+ int detect;
+ unsigned long event;
+ unsigned power;
+ struct isp1704_charger *isp =
+ container_of(data, struct isp1704_charger, work);
+ static DEFINE_MUTEX(lock);
+
+ event = isp->event;
+ power = isp->max_power;
+
+ mutex_lock(&lock);
+
+ if (event != USB_EVENT_NONE)
+ isp1704_charger_set_power(isp, 1);
+
+ switch (event) {
+ case USB_EVENT_VBUS:
+ isp->online = true;
+
+ /* detect charger */
+ detect = isp1704_charger_detect(isp);
+
+ if (detect) {
+ isp->present = detect;
+ isp->psy.type = isp1704_charger_type(isp);
+ }
+
+ switch (isp->psy.type) {
+ case POWER_SUPPLY_TYPE_USB_DCP:
+ isp->current_max = 1800;
+ break;
+ case POWER_SUPPLY_TYPE_USB_CDP:
+ /*
+ * Only 500mA here or high speed chirp
+ * handshaking may break
+ */
+ isp->current_max = 500;
+ /* FALLTHROUGH */
+ case POWER_SUPPLY_TYPE_USB:
+ default:
+ /* enable data pullups */
+ if (isp->phy->otg->gadget)
+ usb_gadget_connect(isp->phy->otg->gadget);
+ }
+ break;
+ case USB_EVENT_NONE:
+ isp->online = false;
+ isp->current_max = 0;
+ isp->present = 0;
+ isp->current_max = 0;
+ isp->psy.type = POWER_SUPPLY_TYPE_USB;
+
+ /*
+ * Disable data pullups. We need to prevent the controller from
+ * enumerating.
+ *
+ * FIXME: This is here to allow charger detection with Host/HUB
+ * chargers. The pullups may be enabled elsewhere, so this can
+ * not be the final solution.
+ */
+ if (isp->phy->otg->gadget)
+ usb_gadget_disconnect(isp->phy->otg->gadget);
+
+ isp1704_charger_set_power(isp, 0);
+ break;
+ case USB_EVENT_ENUMERATED:
+ if (isp->present)
+ isp->current_max = 1800;
+ else
+ isp->current_max = power;
+ break;
+ default:
+ goto out;
+ }
+
+ power_supply_changed(&isp->psy);
+out:
+ mutex_unlock(&lock);
+}
+
+static int isp1704_notifier_call(struct notifier_block *nb,
+ unsigned long event, void *power)
+{
+ struct isp1704_charger *isp =
+ container_of(nb, struct isp1704_charger, nb);
+
+ isp->event = event;
+
+ if (power)
+ isp->max_power = *((unsigned *)power);
+
+ schedule_work(&isp->work);
+
+ return NOTIFY_OK;
+}
+
+static int isp1704_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct isp1704_charger *isp =
+ container_of(psy, struct isp1704_charger, psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = isp->present;
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = isp->online;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ val->intval = isp->current_max;
+ break;
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = isp->model;
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = "NXP";
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static enum power_supply_property power_props[] = {
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_CURRENT_MAX,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static inline int isp1704_test_ulpi(struct isp1704_charger *isp)
+{
+ int vendor;
+ int product;
+ int i;
+ int ret = -ENODEV;
+
+ /* Test ULPI interface */
+ ret = isp1704_write(isp, ULPI_SCRATCH, 0xaa);
+ if (ret < 0)
+ return ret;
+
+ ret = isp1704_read(isp, ULPI_SCRATCH);
+ if (ret < 0)
+ return ret;
+
+ if (ret != 0xaa)
+ return -ENODEV;
+
+ /* Verify the product and vendor id matches */
+ vendor = isp1704_read(isp, ULPI_VENDOR_ID_LOW);
+ vendor |= isp1704_read(isp, ULPI_VENDOR_ID_HIGH) << 8;
+ if (vendor != NXP_VENDOR_ID)
+ return -ENODEV;
+
+ product = isp1704_read(isp, ULPI_PRODUCT_ID_LOW);
+ product |= isp1704_read(isp, ULPI_PRODUCT_ID_HIGH) << 8;
+
+ for (i = 0; i < ARRAY_SIZE(isp170x_id); i++) {
+ if (product == isp170x_id[i]) {
+ sprintf(isp->model, "isp%x", product);
+ return product;
+ }
+ }
+
+ dev_err(isp->dev, "product id %x not matching known ids", product);
+
+ return -ENODEV;
+}
+
+static int __devinit isp1704_charger_probe(struct platform_device *pdev)
+{
+ struct isp1704_charger *isp;
+ int ret = -ENODEV;
+
+ isp = kzalloc(sizeof *isp, GFP_KERNEL);
+ if (!isp)
+ return -ENOMEM;
+
+ isp->phy = usb_get_transceiver();
+ if (!isp->phy)
+ goto fail0;
+
+ isp->dev = &pdev->dev;
+ platform_set_drvdata(pdev, isp);
+
+ isp1704_charger_set_power(isp, 1);
+
+ ret = isp1704_test_ulpi(isp);
+ if (ret < 0)
+ goto fail1;
+
+ isp->psy.name = "isp1704";
+ isp->psy.type = POWER_SUPPLY_TYPE_USB;
+ isp->psy.properties = power_props;
+ isp->psy.num_properties = ARRAY_SIZE(power_props);
+ isp->psy.get_property = isp1704_charger_get_property;
+
+ ret = power_supply_register(isp->dev, &isp->psy);
+ if (ret)
+ goto fail1;
+
+ /*
+ * REVISIT: using work in order to allow the usb notifications to be
+ * made atomically in the future.
+ */
+ INIT_WORK(&isp->work, isp1704_charger_work);
+
+ isp->nb.notifier_call = isp1704_notifier_call;
+
+ ret = usb_register_notifier(isp->phy, &isp->nb);
+ if (ret)
+ goto fail2;
+
+ dev_info(isp->dev, "registered with product id %s\n", isp->model);
+
+ /*
+ * Taking over the D+ pullup.
+ *
+ * FIXME: The device will be disconnected if it was already
+ * enumerated. The charger driver should be always loaded before any
+ * gadget is loaded.
+ */
+ if (isp->phy->otg->gadget)
+ usb_gadget_disconnect(isp->phy->otg->gadget);
+
+ /* Detect charger if VBUS is valid (the cable was already plugged). */
+ ret = isp1704_read(isp, ULPI_USB_INT_STS);
+ isp1704_charger_set_power(isp, 0);
+ if ((ret & ULPI_INT_VBUS_VALID) && !isp->phy->otg->default_a) {
+ isp->event = USB_EVENT_VBUS;
+ schedule_work(&isp->work);
+ }
+
+ return 0;
+fail2:
+ power_supply_unregister(&isp->psy);
+fail1:
+ usb_put_transceiver(isp->phy);
+fail0:
+ kfree(isp);
+
+ dev_err(&pdev->dev, "failed to register isp1704 with error %d\n", ret);
+
+ isp1704_charger_set_power(isp, 0);
+ return ret;
+}
+
+static int __devexit isp1704_charger_remove(struct platform_device *pdev)
+{
+ struct isp1704_charger *isp = platform_get_drvdata(pdev);
+
+ usb_unregister_notifier(isp->phy, &isp->nb);
+ power_supply_unregister(&isp->psy);
+ usb_put_transceiver(isp->phy);
+ isp1704_charger_set_power(isp, 0);
+ kfree(isp);
+
+ return 0;
+}
+
+static struct platform_driver isp1704_charger_driver = {
+ .driver = {
+ .name = "isp1704_charger",
+ },
+ .probe = isp1704_charger_probe,
+ .remove = __devexit_p(isp1704_charger_remove),
+};
+
+module_platform_driver(isp1704_charger_driver);
+
+MODULE_ALIAS("platform:isp1704_charger");
+MODULE_AUTHOR("Nokia Corporation");
+MODULE_DESCRIPTION("ISP170x USB Charger driver");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/jz4740-battery.c b/ap/os/linux/linux-3.4.x/drivers/power/jz4740-battery.c
new file mode 100644
index 0000000..8dbc7bf
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/jz4740-battery.c
@@ -0,0 +1,449 @@
+/*
+ * Battery measurement code for Ingenic JZ SOC.
+ *
+ * Copyright (C) 2009 Jiejing Zhang <kzjeef@gmail.com>
+ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * based on tosa_battery.c
+ *
+ * Copyright (C) 2008 Marek Vasut <marek.vasut@gmail.com>
+*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/mfd/core.h>
+#include <linux/power_supply.h>
+
+#include <linux/power/jz4740-battery.h>
+#include <linux/jz4740-adc.h>
+
+struct jz_battery {
+ struct jz_battery_platform_data *pdata;
+ struct platform_device *pdev;
+
+ struct resource *mem;
+ void __iomem *base;
+
+ int irq;
+ int charge_irq;
+
+ const struct mfd_cell *cell;
+
+ int status;
+ long voltage;
+
+ struct completion read_completion;
+
+ struct power_supply battery;
+ struct delayed_work work;
+
+ struct mutex lock;
+};
+
+static inline struct jz_battery *psy_to_jz_battery(struct power_supply *psy)
+{
+ return container_of(psy, struct jz_battery, battery);
+}
+
+static irqreturn_t jz_battery_irq_handler(int irq, void *devid)
+{
+ struct jz_battery *battery = devid;
+
+ complete(&battery->read_completion);
+ return IRQ_HANDLED;
+}
+
+static long jz_battery_read_voltage(struct jz_battery *battery)
+{
+ long t;
+ unsigned long val;
+ long voltage;
+
+ mutex_lock(&battery->lock);
+
+ INIT_COMPLETION(battery->read_completion);
+
+ enable_irq(battery->irq);
+ battery->cell->enable(battery->pdev);
+
+ t = wait_for_completion_interruptible_timeout(&battery->read_completion,
+ HZ);
+
+ if (t > 0) {
+ val = readw(battery->base) & 0xfff;
+
+ if (battery->pdata->info.voltage_max_design <= 2500000)
+ val = (val * 78125UL) >> 7UL;
+ else
+ val = ((val * 924375UL) >> 9UL) + 33000;
+ voltage = (long)val;
+ } else {
+ voltage = t ? t : -ETIMEDOUT;
+ }
+
+ battery->cell->disable(battery->pdev);
+ disable_irq(battery->irq);
+
+ mutex_unlock(&battery->lock);
+
+ return voltage;
+}
+
+static int jz_battery_get_capacity(struct power_supply *psy)
+{
+ struct jz_battery *jz_battery = psy_to_jz_battery(psy);
+ struct power_supply_info *info = &jz_battery->pdata->info;
+ long voltage;
+ int ret;
+ int voltage_span;
+
+ voltage = jz_battery_read_voltage(jz_battery);
+
+ if (voltage < 0)
+ return voltage;
+
+ voltage_span = info->voltage_max_design - info->voltage_min_design;
+ ret = ((voltage - info->voltage_min_design) * 100) / voltage_span;
+
+ if (ret > 100)
+ ret = 100;
+ else if (ret < 0)
+ ret = 0;
+
+ return ret;
+}
+
+static int jz_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct jz_battery *jz_battery = psy_to_jz_battery(psy);
+ struct power_supply_info *info = &jz_battery->pdata->info;
+ long voltage;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = jz_battery->status;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = jz_battery->pdata->info.technology;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ voltage = jz_battery_read_voltage(jz_battery);
+ if (voltage < info->voltage_min_design)
+ val->intval = POWER_SUPPLY_HEALTH_DEAD;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = jz_battery_get_capacity(psy);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = jz_battery_read_voltage(jz_battery);
+ if (val->intval < 0)
+ return val->intval;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ val->intval = info->voltage_max_design;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = info->voltage_min_design;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static void jz_battery_external_power_changed(struct power_supply *psy)
+{
+ struct jz_battery *jz_battery = psy_to_jz_battery(psy);
+
+ cancel_delayed_work(&jz_battery->work);
+ schedule_delayed_work(&jz_battery->work, 0);
+}
+
+static irqreturn_t jz_battery_charge_irq(int irq, void *data)
+{
+ struct jz_battery *jz_battery = data;
+
+ cancel_delayed_work(&jz_battery->work);
+ schedule_delayed_work(&jz_battery->work, 0);
+
+ return IRQ_HANDLED;
+}
+
+static void jz_battery_update(struct jz_battery *jz_battery)
+{
+ int status;
+ long voltage;
+ bool has_changed = false;
+ int is_charging;
+
+ if (gpio_is_valid(jz_battery->pdata->gpio_charge)) {
+ is_charging = gpio_get_value(jz_battery->pdata->gpio_charge);
+ is_charging ^= jz_battery->pdata->gpio_charge_active_low;
+ if (is_charging)
+ status = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+
+ if (status != jz_battery->status) {
+ jz_battery->status = status;
+ has_changed = true;
+ }
+ }
+
+ voltage = jz_battery_read_voltage(jz_battery);
+ if (abs(voltage - jz_battery->voltage) < 50000) {
+ jz_battery->voltage = voltage;
+ has_changed = true;
+ }
+
+ if (has_changed)
+ power_supply_changed(&jz_battery->battery);
+}
+
+static enum power_supply_property jz_battery_properties[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_PRESENT,
+};
+
+static void jz_battery_work(struct work_struct *work)
+{
+ /* Too small interval will increase system workload */
+ const int interval = HZ * 30;
+ struct jz_battery *jz_battery = container_of(work, struct jz_battery,
+ work.work);
+
+ jz_battery_update(jz_battery);
+ schedule_delayed_work(&jz_battery->work, interval);
+}
+
+static int __devinit jz_battery_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+ struct jz_battery_platform_data *pdata = pdev->dev.parent->platform_data;
+ struct jz_battery *jz_battery;
+ struct power_supply *battery;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "No platform_data supplied\n");
+ return -ENXIO;
+ }
+
+ jz_battery = kzalloc(sizeof(*jz_battery), GFP_KERNEL);
+ if (!jz_battery) {
+ dev_err(&pdev->dev, "Failed to allocate driver structure\n");
+ return -ENOMEM;
+ }
+
+ jz_battery->cell = mfd_get_cell(pdev);
+
+ jz_battery->irq = platform_get_irq(pdev, 0);
+ if (jz_battery->irq < 0) {
+ ret = jz_battery->irq;
+ dev_err(&pdev->dev, "Failed to get platform irq: %d\n", ret);
+ goto err_free;
+ }
+
+ jz_battery->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!jz_battery->mem) {
+ ret = -ENOENT;
+ dev_err(&pdev->dev, "Failed to get platform mmio resource\n");
+ goto err_free;
+ }
+
+ jz_battery->mem = request_mem_region(jz_battery->mem->start,
+ resource_size(jz_battery->mem), pdev->name);
+ if (!jz_battery->mem) {
+ ret = -EBUSY;
+ dev_err(&pdev->dev, "Failed to request mmio memory region\n");
+ goto err_free;
+ }
+
+ jz_battery->base = ioremap_nocache(jz_battery->mem->start,
+ resource_size(jz_battery->mem));
+ if (!jz_battery->base) {
+ ret = -EBUSY;
+ dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
+ goto err_release_mem_region;
+ }
+
+ battery = &jz_battery->battery;
+ battery->name = pdata->info.name;
+ battery->type = POWER_SUPPLY_TYPE_BATTERY;
+ battery->properties = jz_battery_properties;
+ battery->num_properties = ARRAY_SIZE(jz_battery_properties);
+ battery->get_property = jz_battery_get_property;
+ battery->external_power_changed = jz_battery_external_power_changed;
+ battery->use_for_apm = 1;
+
+ jz_battery->pdata = pdata;
+ jz_battery->pdev = pdev;
+
+ init_completion(&jz_battery->read_completion);
+ mutex_init(&jz_battery->lock);
+
+ INIT_DELAYED_WORK(&jz_battery->work, jz_battery_work);
+
+ ret = request_irq(jz_battery->irq, jz_battery_irq_handler, 0, pdev->name,
+ jz_battery);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to request irq %d\n", ret);
+ goto err_iounmap;
+ }
+ disable_irq(jz_battery->irq);
+
+ if (gpio_is_valid(pdata->gpio_charge)) {
+ ret = gpio_request(pdata->gpio_charge, dev_name(&pdev->dev));
+ if (ret) {
+ dev_err(&pdev->dev, "charger state gpio request failed.\n");
+ goto err_free_irq;
+ }
+ ret = gpio_direction_input(pdata->gpio_charge);
+ if (ret) {
+ dev_err(&pdev->dev, "charger state gpio set direction failed.\n");
+ goto err_free_gpio;
+ }
+
+ jz_battery->charge_irq = gpio_to_irq(pdata->gpio_charge);
+
+ if (jz_battery->charge_irq >= 0) {
+ ret = request_irq(jz_battery->charge_irq,
+ jz_battery_charge_irq,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ dev_name(&pdev->dev), jz_battery);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to request charge irq: %d\n", ret);
+ goto err_free_gpio;
+ }
+ }
+ } else {
+ jz_battery->charge_irq = -1;
+ }
+
+ if (jz_battery->pdata->info.voltage_max_design <= 2500000)
+ jz4740_adc_set_config(pdev->dev.parent, JZ_ADC_CONFIG_BAT_MB,
+ JZ_ADC_CONFIG_BAT_MB);
+ else
+ jz4740_adc_set_config(pdev->dev.parent, JZ_ADC_CONFIG_BAT_MB, 0);
+
+ ret = power_supply_register(&pdev->dev, &jz_battery->battery);
+ if (ret) {
+ dev_err(&pdev->dev, "power supply battery register failed.\n");
+ goto err_free_charge_irq;
+ }
+
+ platform_set_drvdata(pdev, jz_battery);
+ schedule_delayed_work(&jz_battery->work, 0);
+
+ return 0;
+
+err_free_charge_irq:
+ if (jz_battery->charge_irq >= 0)
+ free_irq(jz_battery->charge_irq, jz_battery);
+err_free_gpio:
+ if (gpio_is_valid(pdata->gpio_charge))
+ gpio_free(jz_battery->pdata->gpio_charge);
+err_free_irq:
+ free_irq(jz_battery->irq, jz_battery);
+err_iounmap:
+ platform_set_drvdata(pdev, NULL);
+ iounmap(jz_battery->base);
+err_release_mem_region:
+ release_mem_region(jz_battery->mem->start, resource_size(jz_battery->mem));
+err_free:
+ kfree(jz_battery);
+ return ret;
+}
+
+static int __devexit jz_battery_remove(struct platform_device *pdev)
+{
+ struct jz_battery *jz_battery = platform_get_drvdata(pdev);
+
+ cancel_delayed_work_sync(&jz_battery->work);
+
+ if (gpio_is_valid(jz_battery->pdata->gpio_charge)) {
+ if (jz_battery->charge_irq >= 0)
+ free_irq(jz_battery->charge_irq, jz_battery);
+ gpio_free(jz_battery->pdata->gpio_charge);
+ }
+
+ power_supply_unregister(&jz_battery->battery);
+
+ free_irq(jz_battery->irq, jz_battery);
+
+ iounmap(jz_battery->base);
+ release_mem_region(jz_battery->mem->start, resource_size(jz_battery->mem));
+ kfree(jz_battery);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int jz_battery_suspend(struct device *dev)
+{
+ struct jz_battery *jz_battery = dev_get_drvdata(dev);
+
+ cancel_delayed_work_sync(&jz_battery->work);
+ jz_battery->status = POWER_SUPPLY_STATUS_UNKNOWN;
+
+ return 0;
+}
+
+static int jz_battery_resume(struct device *dev)
+{
+ struct jz_battery *jz_battery = dev_get_drvdata(dev);
+
+ schedule_delayed_work(&jz_battery->work, 0);
+
+ return 0;
+}
+
+static const struct dev_pm_ops jz_battery_pm_ops = {
+ .suspend = jz_battery_suspend,
+ .resume = jz_battery_resume,
+};
+
+#define JZ_BATTERY_PM_OPS (&jz_battery_pm_ops)
+#else
+#define JZ_BATTERY_PM_OPS NULL
+#endif
+
+static struct platform_driver jz_battery_driver = {
+ .probe = jz_battery_probe,
+ .remove = __devexit_p(jz_battery_remove),
+ .driver = {
+ .name = "jz4740-battery",
+ .owner = THIS_MODULE,
+ .pm = JZ_BATTERY_PM_OPS,
+ },
+};
+
+module_platform_driver(jz_battery_driver);
+
+MODULE_ALIAS("platform:jz4740-battery");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("JZ4740 SoC battery driver");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/lp8727_charger.c b/ap/os/linux/linux-3.4.x/drivers/power/lp8727_charger.c
new file mode 100644
index 0000000..d8b7578
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/lp8727_charger.c
@@ -0,0 +1,498 @@
+/*
+ * Driver for LP8727 Micro/Mini USB IC with integrated charger
+ *
+ * Copyright (C) 2011 Texas Instruments
+ * Copyright (C) 2011 National Semiconductor
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/power_supply.h>
+#include <linux/lp8727.h>
+
+#define DEBOUNCE_MSEC 270
+
+/* Registers */
+#define CTRL1 0x1
+#define CTRL2 0x2
+#define SWCTRL 0x3
+#define INT1 0x4
+#define INT2 0x5
+#define STATUS1 0x6
+#define STATUS2 0x7
+#define CHGCTRL2 0x9
+
+/* CTRL1 register */
+#define CP_EN (1 << 0)
+#define ADC_EN (1 << 1)
+#define ID200_EN (1 << 4)
+
+/* CTRL2 register */
+#define CHGDET_EN (1 << 1)
+#define INT_EN (1 << 6)
+
+/* SWCTRL register */
+#define SW_DM1_DM (0x0 << 0)
+#define SW_DM1_U1 (0x1 << 0)
+#define SW_DM1_HiZ (0x7 << 0)
+#define SW_DP2_DP (0x0 << 3)
+#define SW_DP2_U2 (0x1 << 3)
+#define SW_DP2_HiZ (0x7 << 3)
+
+/* INT1 register */
+#define IDNO (0xF << 0)
+#define VBUS (1 << 4)
+
+/* STATUS1 register */
+#define CHGSTAT (3 << 4)
+#define CHPORT (1 << 6)
+#define DCPORT (1 << 7)
+
+/* STATUS2 register */
+#define TEMP_STAT (3 << 5)
+
+enum lp8727_dev_id {
+ ID_NONE,
+ ID_TA,
+ ID_DEDICATED_CHG,
+ ID_USB_CHG,
+ ID_USB_DS,
+ ID_MAX,
+};
+
+enum lp8727_chg_stat {
+ PRECHG,
+ CC,
+ CV,
+ EOC,
+};
+
+struct lp8727_psy {
+ struct power_supply ac;
+ struct power_supply usb;
+ struct power_supply batt;
+};
+
+struct lp8727_chg {
+ struct device *dev;
+ struct i2c_client *client;
+ struct mutex xfer_lock;
+ struct delayed_work work;
+ struct workqueue_struct *irqthread;
+ struct lp8727_platform_data *pdata;
+ struct lp8727_psy *psy;
+ struct lp8727_chg_param *chg_parm;
+ enum lp8727_dev_id devid;
+};
+
+static int lp8727_read_bytes(struct lp8727_chg *pchg, u8 reg, u8 *data, u8 len)
+{
+ s32 ret;
+
+ mutex_lock(&pchg->xfer_lock);
+ ret = i2c_smbus_read_i2c_block_data(pchg->client, reg, len, data);
+ mutex_unlock(&pchg->xfer_lock);
+
+ return (ret != len) ? -EIO : 0;
+}
+
+static inline int lp8727_read_byte(struct lp8727_chg *pchg, u8 reg, u8 *data)
+{
+ return lp8727_read_bytes(pchg, reg, data, 1);
+}
+
+static int lp8727_write_byte(struct lp8727_chg *pchg, u8 reg, u8 data)
+{
+ int ret;
+
+ mutex_lock(&pchg->xfer_lock);
+ ret = i2c_smbus_write_byte_data(pchg->client, reg, data);
+ mutex_unlock(&pchg->xfer_lock);
+
+ return ret;
+}
+
+static int lp8727_is_charger_attached(const char *name, int id)
+{
+ if (name) {
+ if (!strcmp(name, "ac"))
+ return (id == ID_TA || id == ID_DEDICATED_CHG) ? 1 : 0;
+ else if (!strcmp(name, "usb"))
+ return (id == ID_USB_CHG) ? 1 : 0;
+ }
+
+ return (id >= ID_TA && id <= ID_USB_CHG) ? 1 : 0;
+}
+
+static int lp8727_init_device(struct lp8727_chg *pchg)
+{
+ u8 val;
+ int ret;
+
+ val = ID200_EN | ADC_EN | CP_EN;
+ ret = lp8727_write_byte(pchg, CTRL1, val);
+ if (ret)
+ return ret;
+
+ val = INT_EN | CHGDET_EN;
+ ret = lp8727_write_byte(pchg, CTRL2, val);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int lp8727_is_dedicated_charger(struct lp8727_chg *pchg)
+{
+ u8 val;
+ lp8727_read_byte(pchg, STATUS1, &val);
+ return val & DCPORT;
+}
+
+static int lp8727_is_usb_charger(struct lp8727_chg *pchg)
+{
+ u8 val;
+ lp8727_read_byte(pchg, STATUS1, &val);
+ return val & CHPORT;
+}
+
+static void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw)
+{
+ lp8727_write_byte(pchg, SWCTRL, sw);
+}
+
+static void lp8727_id_detection(struct lp8727_chg *pchg, u8 id, int vbusin)
+{
+ u8 devid = ID_NONE;
+ u8 swctrl = SW_DM1_HiZ | SW_DP2_HiZ;
+
+ switch (id) {
+ case 0x5:
+ devid = ID_TA;
+ pchg->chg_parm = &pchg->pdata->ac;
+ break;
+ case 0xB:
+ if (lp8727_is_dedicated_charger(pchg)) {
+ pchg->chg_parm = &pchg->pdata->ac;
+ devid = ID_DEDICATED_CHG;
+ } else if (lp8727_is_usb_charger(pchg)) {
+ pchg->chg_parm = &pchg->pdata->usb;
+ devid = ID_USB_CHG;
+ swctrl = SW_DM1_DM | SW_DP2_DP;
+ } else if (vbusin) {
+ devid = ID_USB_DS;
+ swctrl = SW_DM1_DM | SW_DP2_DP;
+ }
+ break;
+ default:
+ devid = ID_NONE;
+ pchg->chg_parm = NULL;
+ break;
+ }
+
+ pchg->devid = devid;
+ lp8727_ctrl_switch(pchg, swctrl);
+}
+
+static void lp8727_enable_chgdet(struct lp8727_chg *pchg)
+{
+ u8 val;
+
+ lp8727_read_byte(pchg, CTRL2, &val);
+ val |= CHGDET_EN;
+ lp8727_write_byte(pchg, CTRL2, val);
+}
+
+static void lp8727_delayed_func(struct work_struct *_work)
+{
+ u8 intstat[2], idno, vbus;
+ struct lp8727_chg *pchg =
+ container_of(_work, struct lp8727_chg, work.work);
+
+ if (lp8727_read_bytes(pchg, INT1, intstat, 2)) {
+ dev_err(pchg->dev, "can not read INT registers\n");
+ return;
+ }
+
+ idno = intstat[0] & IDNO;
+ vbus = intstat[0] & VBUS;
+
+ lp8727_id_detection(pchg, idno, vbus);
+ lp8727_enable_chgdet(pchg);
+
+ power_supply_changed(&pchg->psy->ac);
+ power_supply_changed(&pchg->psy->usb);
+ power_supply_changed(&pchg->psy->batt);
+}
+
+static irqreturn_t lp8727_isr_func(int irq, void *ptr)
+{
+ struct lp8727_chg *pchg = ptr;
+ unsigned long delay = msecs_to_jiffies(DEBOUNCE_MSEC);
+
+ queue_delayed_work(pchg->irqthread, &pchg->work, delay);
+
+ return IRQ_HANDLED;
+}
+
+static int lp8727_intr_config(struct lp8727_chg *pchg)
+{
+ INIT_DELAYED_WORK(&pchg->work, lp8727_delayed_func);
+
+ pchg->irqthread = create_singlethread_workqueue("lp8727-irqthd");
+ if (!pchg->irqthread) {
+ dev_err(pchg->dev, "can not create thread for lp8727\n");
+ return -ENOMEM;
+ }
+
+ return request_threaded_irq(pchg->client->irq,
+ NULL,
+ lp8727_isr_func,
+ IRQF_TRIGGER_FALLING,
+ "lp8727_irq",
+ pchg);
+}
+
+static enum power_supply_property lp8727_charger_prop[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static enum power_supply_property lp8727_battery_prop[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_TEMP,
+};
+
+static char *battery_supplied_to[] = {
+ "main_batt",
+};
+
+static int lp8727_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent);
+
+ if (psp == POWER_SUPPLY_PROP_ONLINE)
+ val->intval = lp8727_is_charger_attached(psy->name,
+ pchg->devid);
+
+ return 0;
+}
+
+static int lp8727_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent);
+ u8 read;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (lp8727_is_charger_attached(psy->name, pchg->devid)) {
+ lp8727_read_byte(pchg, STATUS1, &read);
+ if (((read & CHGSTAT) >> 4) == EOC)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ else
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ } else {
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ lp8727_read_byte(pchg, STATUS2, &read);
+ read = (read & TEMP_STAT) >> 5;
+ if (read >= 0x1 && read <= 0x3)
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ if (pchg->pdata->get_batt_present)
+ val->intval = pchg->pdata->get_batt_present();
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ if (pchg->pdata->get_batt_level)
+ val->intval = pchg->pdata->get_batt_level();
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ if (pchg->pdata->get_batt_capacity)
+ val->intval = pchg->pdata->get_batt_capacity();
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ if (pchg->pdata->get_batt_temp)
+ val->intval = pchg->pdata->get_batt_temp();
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static void lp8727_charger_changed(struct power_supply *psy)
+{
+ struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent);
+ u8 val;
+ u8 eoc_level, ichg;
+
+ if (lp8727_is_charger_attached(psy->name, pchg->devid)) {
+ if (pchg->chg_parm) {
+ eoc_level = pchg->chg_parm->eoc_level;
+ ichg = pchg->chg_parm->ichg;
+ val = (ichg << 4) | eoc_level;
+ lp8727_write_byte(pchg, CHGCTRL2, val);
+ }
+ }
+}
+
+static int lp8727_register_psy(struct lp8727_chg *pchg)
+{
+ struct lp8727_psy *psy;
+
+ psy = kzalloc(sizeof(*psy), GFP_KERNEL);
+ if (!psy)
+ goto err_mem;
+
+ pchg->psy = psy;
+
+ psy->ac.name = "ac";
+ psy->ac.type = POWER_SUPPLY_TYPE_MAINS;
+ psy->ac.properties = lp8727_charger_prop;
+ psy->ac.num_properties = ARRAY_SIZE(lp8727_charger_prop);
+ psy->ac.get_property = lp8727_charger_get_property;
+ psy->ac.supplied_to = battery_supplied_to;
+ psy->ac.num_supplicants = ARRAY_SIZE(battery_supplied_to);
+
+ if (power_supply_register(pchg->dev, &psy->ac))
+ goto err_psy;
+
+ psy->usb.name = "usb";
+ psy->usb.type = POWER_SUPPLY_TYPE_USB;
+ psy->usb.properties = lp8727_charger_prop;
+ psy->usb.num_properties = ARRAY_SIZE(lp8727_charger_prop);
+ psy->usb.get_property = lp8727_charger_get_property;
+ psy->usb.supplied_to = battery_supplied_to;
+ psy->usb.num_supplicants = ARRAY_SIZE(battery_supplied_to);
+
+ if (power_supply_register(pchg->dev, &psy->usb))
+ goto err_psy;
+
+ psy->batt.name = "main_batt";
+ psy->batt.type = POWER_SUPPLY_TYPE_BATTERY;
+ psy->batt.properties = lp8727_battery_prop;
+ psy->batt.num_properties = ARRAY_SIZE(lp8727_battery_prop);
+ psy->batt.get_property = lp8727_battery_get_property;
+ psy->batt.external_power_changed = lp8727_charger_changed;
+
+ if (power_supply_register(pchg->dev, &psy->batt))
+ goto err_psy;
+
+ return 0;
+
+err_mem:
+ return -ENOMEM;
+err_psy:
+ kfree(psy);
+ return -EPERM;
+}
+
+static void lp8727_unregister_psy(struct lp8727_chg *pchg)
+{
+ struct lp8727_psy *psy = pchg->psy;
+
+ if (!psy)
+ return;
+
+ power_supply_unregister(&psy->ac);
+ power_supply_unregister(&psy->usb);
+ power_supply_unregister(&psy->batt);
+ kfree(psy);
+}
+
+static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id)
+{
+ struct lp8727_chg *pchg;
+ int ret;
+
+ if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
+ return -EIO;
+
+ pchg = kzalloc(sizeof(*pchg), GFP_KERNEL);
+ if (!pchg)
+ return -ENOMEM;
+
+ pchg->client = cl;
+ pchg->dev = &cl->dev;
+ pchg->pdata = cl->dev.platform_data;
+ i2c_set_clientdata(cl, pchg);
+
+ mutex_init(&pchg->xfer_lock);
+
+ ret = lp8727_init_device(pchg);
+ if (ret) {
+ dev_err(pchg->dev, "i2c communication err: %d", ret);
+ goto error;
+ }
+
+ ret = lp8727_intr_config(pchg);
+ if (ret) {
+ dev_err(pchg->dev, "irq handler err: %d", ret);
+ goto error;
+ }
+
+ ret = lp8727_register_psy(pchg);
+ if (ret) {
+ dev_err(pchg->dev, "power supplies register err: %d", ret);
+ goto error;
+ }
+
+ return 0;
+
+error:
+ kfree(pchg);
+ return ret;
+}
+
+static int __devexit lp8727_remove(struct i2c_client *cl)
+{
+ struct lp8727_chg *pchg = i2c_get_clientdata(cl);
+
+ lp8727_unregister_psy(pchg);
+ free_irq(pchg->client->irq, pchg);
+ flush_workqueue(pchg->irqthread);
+ destroy_workqueue(pchg->irqthread);
+ kfree(pchg);
+ return 0;
+}
+
+static const struct i2c_device_id lp8727_ids[] = {
+ {"lp8727", 0},
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lp8727_ids);
+
+static struct i2c_driver lp8727_driver = {
+ .driver = {
+ .name = "lp8727",
+ },
+ .probe = lp8727_probe,
+ .remove = __devexit_p(lp8727_remove),
+ .id_table = lp8727_ids,
+};
+module_i2c_driver(lp8727_driver);
+
+MODULE_DESCRIPTION("TI/National Semiconductor LP8727 charger driver");
+MODULE_AUTHOR("Woogyom Kim <milo.kim@ti.com>, "
+ "Daniel Jeong <daniel.jeong@ti.com>");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/max17040_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/max17040_battery.c
new file mode 100644
index 0000000..ec8b948
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/max17040_battery.c
@@ -0,0 +1,298 @@
+/*
+ * max17040_battery.c
+ * fuel-gauge systems for lithium-ion (Li+) batteries
+ *
+ * Copyright (C) 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mutex.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/power_supply.h>
+#include <linux/max17040_battery.h>
+#include <linux/slab.h>
+
+#define MAX17040_VCELL_MSB 0x02
+#define MAX17040_VCELL_LSB 0x03
+#define MAX17040_SOC_MSB 0x04
+#define MAX17040_SOC_LSB 0x05
+#define MAX17040_MODE_MSB 0x06
+#define MAX17040_MODE_LSB 0x07
+#define MAX17040_VER_MSB 0x08
+#define MAX17040_VER_LSB 0x09
+#define MAX17040_RCOMP_MSB 0x0C
+#define MAX17040_RCOMP_LSB 0x0D
+#define MAX17040_CMD_MSB 0xFE
+#define MAX17040_CMD_LSB 0xFF
+
+#define MAX17040_DELAY 1000
+#define MAX17040_BATTERY_FULL 95
+
+struct max17040_chip {
+ struct i2c_client *client;
+ struct delayed_work work;
+ struct power_supply battery;
+ struct max17040_platform_data *pdata;
+
+ /* State Of Connect */
+ int online;
+ /* battery voltage */
+ int vcell;
+ /* battery capacity */
+ int soc;
+ /* State Of Charge */
+ int status;
+};
+
+static int max17040_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max17040_chip *chip = container_of(psy,
+ struct max17040_chip, battery);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = chip->status;
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = chip->online;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = chip->vcell;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = chip->soc;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int max17040_write_reg(struct i2c_client *client, int reg, u8 value)
+{
+ int ret;
+
+ ret = i2c_smbus_write_byte_data(client, reg, value);
+
+ if (ret < 0)
+ dev_err(&client->dev, "%s: err %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int max17040_read_reg(struct i2c_client *client, int reg)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(client, reg);
+
+ if (ret < 0)
+ dev_err(&client->dev, "%s: err %d\n", __func__, ret);
+
+ return ret;
+}
+
+static void max17040_reset(struct i2c_client *client)
+{
+ max17040_write_reg(client, MAX17040_CMD_MSB, 0x54);
+ max17040_write_reg(client, MAX17040_CMD_LSB, 0x00);
+}
+
+static void max17040_get_vcell(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+ u8 msb;
+ u8 lsb;
+
+ msb = max17040_read_reg(client, MAX17040_VCELL_MSB);
+ lsb = max17040_read_reg(client, MAX17040_VCELL_LSB);
+
+ chip->vcell = (msb << 4) + (lsb >> 4);
+}
+
+static void max17040_get_soc(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+ u8 msb;
+ u8 lsb;
+
+ msb = max17040_read_reg(client, MAX17040_SOC_MSB);
+ lsb = max17040_read_reg(client, MAX17040_SOC_LSB);
+
+ chip->soc = msb;
+}
+
+static void max17040_get_version(struct i2c_client *client)
+{
+ u8 msb;
+ u8 lsb;
+
+ msb = max17040_read_reg(client, MAX17040_VER_MSB);
+ lsb = max17040_read_reg(client, MAX17040_VER_LSB);
+
+ dev_info(&client->dev, "MAX17040 Fuel-Gauge Ver %d%d\n", msb, lsb);
+}
+
+static void max17040_get_online(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+
+ if (chip->pdata && chip->pdata->battery_online)
+ chip->online = chip->pdata->battery_online();
+ else
+ chip->online = 1;
+}
+
+static void max17040_get_status(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+
+ if (!chip->pdata || !chip->pdata->charger_online
+ || !chip->pdata->charger_enable) {
+ chip->status = POWER_SUPPLY_STATUS_UNKNOWN;
+ return;
+ }
+
+ if (chip->pdata->charger_online()) {
+ if (chip->pdata->charger_enable())
+ chip->status = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ chip->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ } else {
+ chip->status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ if (chip->soc > MAX17040_BATTERY_FULL)
+ chip->status = POWER_SUPPLY_STATUS_FULL;
+}
+
+static void max17040_work(struct work_struct *work)
+{
+ struct max17040_chip *chip;
+
+ chip = container_of(work, struct max17040_chip, work.work);
+
+ max17040_get_vcell(chip->client);
+ max17040_get_soc(chip->client);
+ max17040_get_online(chip->client);
+ max17040_get_status(chip->client);
+
+ schedule_delayed_work(&chip->work, MAX17040_DELAY);
+}
+
+static enum power_supply_property max17040_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+};
+
+static int __devinit max17040_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct max17040_chip *chip;
+ int ret;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
+ return -EIO;
+
+ chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->client = client;
+ chip->pdata = client->dev.platform_data;
+
+ i2c_set_clientdata(client, chip);
+
+ chip->battery.name = "battery";
+ chip->battery.type = POWER_SUPPLY_TYPE_BATTERY;
+ chip->battery.get_property = max17040_get_property;
+ chip->battery.properties = max17040_battery_props;
+ chip->battery.num_properties = ARRAY_SIZE(max17040_battery_props);
+
+ ret = power_supply_register(&client->dev, &chip->battery);
+ if (ret) {
+ dev_err(&client->dev, "failed: power supply register\n");
+ kfree(chip);
+ return ret;
+ }
+
+ max17040_reset(client);
+ max17040_get_version(client);
+
+ INIT_DELAYED_WORK_DEFERRABLE(&chip->work, max17040_work);
+ schedule_delayed_work(&chip->work, MAX17040_DELAY);
+
+ return 0;
+}
+
+static int __devexit max17040_remove(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+
+ power_supply_unregister(&chip->battery);
+ cancel_delayed_work(&chip->work);
+ kfree(chip);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int max17040_suspend(struct i2c_client *client,
+ pm_message_t state)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+
+ cancel_delayed_work(&chip->work);
+ return 0;
+}
+
+static int max17040_resume(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+
+ schedule_delayed_work(&chip->work, MAX17040_DELAY);
+ return 0;
+}
+
+#else
+
+#define max17040_suspend NULL
+#define max17040_resume NULL
+
+#endif /* CONFIG_PM */
+
+static const struct i2c_device_id max17040_id[] = {
+ { "max17040", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max17040_id);
+
+static struct i2c_driver max17040_i2c_driver = {
+ .driver = {
+ .name = "max17040",
+ },
+ .probe = max17040_probe,
+ .remove = __devexit_p(max17040_remove),
+ .suspend = max17040_suspend,
+ .resume = max17040_resume,
+ .id_table = max17040_id,
+};
+module_i2c_driver(max17040_i2c_driver);
+
+MODULE_AUTHOR("Minkyu Kang <mk7.kang@samsung.com>");
+MODULE_DESCRIPTION("MAX17040 Fuel Gauge");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/max17042_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/max17042_battery.c
new file mode 100644
index 0000000..04620c2
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/max17042_battery.c
@@ -0,0 +1,751 @@
+/*
+ * Fuel gauge driver for Maxim 17042 / 8966 / 8997
+ * Note that Maxim 8966 and 8997 are mfd and this is its subdevice.
+ *
+ * Copyright (C) 2011 Samsung Electronics
+ * MyungJoo Ham <myungjoo.ham@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * This driver is based on max17040_battery.c
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/mod_devicetable.h>
+#include <linux/power_supply.h>
+#include <linux/power/max17042_battery.h>
+#include <linux/of.h>
+
+/* Status register bits */
+#define STATUS_POR_BIT (1 << 1)
+#define STATUS_BST_BIT (1 << 3)
+#define STATUS_VMN_BIT (1 << 8)
+#define STATUS_TMN_BIT (1 << 9)
+#define STATUS_SMN_BIT (1 << 10)
+#define STATUS_BI_BIT (1 << 11)
+#define STATUS_VMX_BIT (1 << 12)
+#define STATUS_TMX_BIT (1 << 13)
+#define STATUS_SMX_BIT (1 << 14)
+#define STATUS_BR_BIT (1 << 15)
+
+/* Interrupt mask bits */
+#define CONFIG_ALRT_BIT_ENBL (1 << 2)
+#define STATUS_INTR_SOCMIN_BIT (1 << 10)
+#define STATUS_INTR_SOCMAX_BIT (1 << 14)
+
+#define VFSOC0_LOCK 0x0000
+#define VFSOC0_UNLOCK 0x0080
+#define MODEL_UNLOCK1 0X0059
+#define MODEL_UNLOCK2 0X00C4
+#define MODEL_LOCK1 0X0000
+#define MODEL_LOCK2 0X0000
+
+#define dQ_ACC_DIV 0x4
+#define dP_ACC_100 0x1900
+#define dP_ACC_200 0x3200
+
+struct max17042_chip {
+ struct i2c_client *client;
+ struct power_supply battery;
+ struct max17042_platform_data *pdata;
+ struct work_struct work;
+ int init_complete;
+};
+
+static int max17042_write_reg(struct i2c_client *client, u8 reg, u16 value)
+{
+ int ret = i2c_smbus_write_word_data(client, reg, value);
+
+ if (ret < 0)
+ dev_err(&client->dev, "%s: err %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int max17042_read_reg(struct i2c_client *client, u8 reg)
+{
+ int ret = i2c_smbus_read_word_data(client, reg);
+
+ if (ret < 0)
+ dev_err(&client->dev, "%s: err %d\n", __func__, ret);
+
+ return ret;
+}
+
+static void max17042_set_reg(struct i2c_client *client,
+ struct max17042_reg_data *data, int size)
+{
+ int i;
+
+ for (i = 0; i < size; i++)
+ max17042_write_reg(client, data[i].addr, data[i].data);
+}
+
+static enum power_supply_property max17042_battery_props[] = {
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+};
+
+static int max17042_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max17042_chip *chip = container_of(psy,
+ struct max17042_chip, battery);
+ int ret;
+
+ if (!chip->init_complete)
+ return -EAGAIN;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ ret = max17042_read_reg(chip->client, MAX17042_STATUS);
+ if (ret < 0)
+ return ret;
+
+ if (ret & MAX17042_STATUS_BattAbsent)
+ val->intval = 0;
+ else
+ val->intval = 1;
+ break;
+ case POWER_SUPPLY_PROP_CYCLE_COUNT:
+ ret = max17042_read_reg(chip->client, MAX17042_Cycles);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ ret = max17042_read_reg(chip->client, MAX17042_MinMaxVolt);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret >> 8;
+ val->intval *= 20000; /* Units of LSB = 20mV */
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ ret = max17042_read_reg(chip->client, MAX17042_V_empty);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret >> 7;
+ val->intval *= 10000; /* Units of LSB = 10mV */
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = max17042_read_reg(chip->client, MAX17042_VCELL);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret * 625 / 8;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ ret = max17042_read_reg(chip->client, MAX17042_AvgVCELL);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret * 625 / 8;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = max17042_read_reg(chip->client, MAX17042_RepSOC);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret >> 8;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ ret = max17042_read_reg(chip->client, MAX17042_FullCAP);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret * 1000 / 2;
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ ret = max17042_read_reg(chip->client, MAX17042_TEMP);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret;
+ /* The value is signed. */
+ if (val->intval & 0x8000) {
+ val->intval = (0x7fff & ~val->intval) + 1;
+ val->intval *= -1;
+ }
+ /* The value is converted into deci-centigrade scale */
+ /* Units of LSB = 1 / 256 degree Celsius */
+ val->intval = val->intval * 10 / 256;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ if (chip->pdata->enable_current_sense) {
+ ret = max17042_read_reg(chip->client, MAX17042_Current);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret;
+ if (val->intval & 0x8000) {
+ /* Negative */
+ val->intval = ~val->intval & 0x7fff;
+ val->intval++;
+ val->intval *= -1;
+ }
+ val->intval *= 1562500 / chip->pdata->r_sns;
+ } else {
+ return -EINVAL;
+ }
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ if (chip->pdata->enable_current_sense) {
+ ret = max17042_read_reg(chip->client,
+ MAX17042_AvgCurrent);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret;
+ if (val->intval & 0x8000) {
+ /* Negative */
+ val->intval = ~val->intval & 0x7fff;
+ val->intval++;
+ val->intval *= -1;
+ }
+ val->intval *= 1562500 / chip->pdata->r_sns;
+ } else {
+ return -EINVAL;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int max17042_write_verify_reg(struct i2c_client *client,
+ u8 reg, u16 value)
+{
+ int retries = 8;
+ int ret;
+ u16 read_value;
+
+ do {
+ ret = i2c_smbus_write_word_data(client, reg, value);
+ read_value = max17042_read_reg(client, reg);
+ if (read_value != value) {
+ ret = -EIO;
+ retries--;
+ }
+ } while (retries && read_value != value);
+
+ if (ret < 0)
+ dev_err(&client->dev, "%s: err %d\n", __func__, ret);
+
+ return ret;
+}
+
+static inline void max17042_override_por(
+ struct i2c_client *client, u8 reg, u16 value)
+{
+ if (value)
+ max17042_write_reg(client, reg, value);
+}
+
+static inline void max10742_unlock_model(struct max17042_chip *chip)
+{
+ struct i2c_client *client = chip->client;
+ max17042_write_reg(client, MAX17042_MLOCKReg1, MODEL_UNLOCK1);
+ max17042_write_reg(client, MAX17042_MLOCKReg2, MODEL_UNLOCK2);
+}
+
+static inline void max10742_lock_model(struct max17042_chip *chip)
+{
+ struct i2c_client *client = chip->client;
+ max17042_write_reg(client, MAX17042_MLOCKReg1, MODEL_LOCK1);
+ max17042_write_reg(client, MAX17042_MLOCKReg2, MODEL_LOCK2);
+}
+
+static inline void max17042_write_model_data(struct max17042_chip *chip,
+ u8 addr, int size)
+{
+ struct i2c_client *client = chip->client;
+ int i;
+ for (i = 0; i < size; i++)
+ max17042_write_reg(client, addr + i,
+ chip->pdata->config_data->cell_char_tbl[i]);
+}
+
+static inline void max17042_read_model_data(struct max17042_chip *chip,
+ u8 addr, u16 *data, int size)
+{
+ struct i2c_client *client = chip->client;
+ int i;
+
+ for (i = 0; i < size; i++)
+ data[i] = max17042_read_reg(client, addr + i);
+}
+
+static inline int max17042_model_data_compare(struct max17042_chip *chip,
+ u16 *data1, u16 *data2, int size)
+{
+ int i;
+
+ if (memcmp(data1, data2, size)) {
+ dev_err(&chip->client->dev, "%s compare failed\n", __func__);
+ for (i = 0; i < size; i++)
+ dev_info(&chip->client->dev, "0x%x, 0x%x",
+ data1[i], data2[i]);
+ dev_info(&chip->client->dev, "\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int max17042_init_model(struct max17042_chip *chip)
+{
+ int ret;
+ int table_size =
+ sizeof(chip->pdata->config_data->cell_char_tbl)/sizeof(u16);
+ u16 *temp_data;
+
+ temp_data = kzalloc(table_size, GFP_KERNEL);
+ if (!temp_data)
+ return -ENOMEM;
+
+ max10742_unlock_model(chip);
+ max17042_write_model_data(chip, MAX17042_MODELChrTbl,
+ table_size);
+ max17042_read_model_data(chip, MAX17042_MODELChrTbl, temp_data,
+ table_size);
+
+ ret = max17042_model_data_compare(
+ chip,
+ chip->pdata->config_data->cell_char_tbl,
+ temp_data,
+ table_size);
+
+ max10742_lock_model(chip);
+ kfree(temp_data);
+
+ return ret;
+}
+
+static int max17042_verify_model_lock(struct max17042_chip *chip)
+{
+ int i;
+ int table_size =
+ sizeof(chip->pdata->config_data->cell_char_tbl);
+ u16 *temp_data;
+ int ret = 0;
+
+ temp_data = kzalloc(table_size, GFP_KERNEL);
+ if (!temp_data)
+ return -ENOMEM;
+
+ max17042_read_model_data(chip, MAX17042_MODELChrTbl, temp_data,
+ table_size);
+ for (i = 0; i < table_size; i++)
+ if (temp_data[i])
+ ret = -EINVAL;
+
+ kfree(temp_data);
+ return ret;
+}
+
+static void max17042_write_config_regs(struct max17042_chip *chip)
+{
+ struct max17042_config_data *config = chip->pdata->config_data;
+
+ max17042_write_reg(chip->client, MAX17042_CONFIG, config->config);
+ max17042_write_reg(chip->client, MAX17042_LearnCFG, config->learn_cfg);
+ max17042_write_reg(chip->client, MAX17042_FilterCFG,
+ config->filter_cfg);
+ max17042_write_reg(chip->client, MAX17042_RelaxCFG, config->relax_cfg);
+}
+
+static void max17042_write_custom_regs(struct max17042_chip *chip)
+{
+ struct max17042_config_data *config = chip->pdata->config_data;
+
+ max17042_write_verify_reg(chip->client, MAX17042_RCOMP0,
+ config->rcomp0);
+ max17042_write_verify_reg(chip->client, MAX17042_TempCo,
+ config->tcompc0);
+ max17042_write_reg(chip->client, MAX17042_EmptyTempCo,
+ config->empty_tempco);
+ max17042_write_verify_reg(chip->client, MAX17042_K_empty0,
+ config->kempty0);
+ max17042_write_verify_reg(chip->client, MAX17042_ICHGTerm,
+ config->ichgt_term);
+}
+
+static void max17042_update_capacity_regs(struct max17042_chip *chip)
+{
+ struct max17042_config_data *config = chip->pdata->config_data;
+
+ max17042_write_verify_reg(chip->client, MAX17042_FullCAP,
+ config->fullcap);
+ max17042_write_reg(chip->client, MAX17042_DesignCap,
+ config->design_cap);
+ max17042_write_verify_reg(chip->client, MAX17042_FullCAPNom,
+ config->fullcapnom);
+}
+
+static void max17042_reset_vfsoc0_reg(struct max17042_chip *chip)
+{
+ u16 vfSoc;
+
+ vfSoc = max17042_read_reg(chip->client, MAX17042_VFSOC);
+ max17042_write_reg(chip->client, MAX17042_VFSOC0Enable, VFSOC0_UNLOCK);
+ max17042_write_verify_reg(chip->client, MAX17042_VFSOC0, vfSoc);
+ max17042_write_reg(chip->client, MAX17042_VFSOC0Enable, VFSOC0_LOCK);
+}
+
+static void max17042_load_new_capacity_params(struct max17042_chip *chip)
+{
+ u16 full_cap0, rep_cap, dq_acc, vfSoc;
+ u32 rem_cap;
+
+ struct max17042_config_data *config = chip->pdata->config_data;
+
+ full_cap0 = max17042_read_reg(chip->client, MAX17042_FullCAP0);
+ vfSoc = max17042_read_reg(chip->client, MAX17042_VFSOC);
+
+ /* fg_vfSoc needs to shifted by 8 bits to get the
+ * perc in 1% accuracy, to get the right rem_cap multiply
+ * full_cap0, fg_vfSoc and devide by 100
+ */
+ rem_cap = ((vfSoc >> 8) * full_cap0) / 100;
+ max17042_write_verify_reg(chip->client, MAX17042_RemCap, (u16)rem_cap);
+
+ rep_cap = (u16)rem_cap;
+ max17042_write_verify_reg(chip->client, MAX17042_RepCap, rep_cap);
+
+ /* Write dQ_acc to 200% of Capacity and dP_acc to 200% */
+ dq_acc = config->fullcap / dQ_ACC_DIV;
+ max17042_write_verify_reg(chip->client, MAX17042_dQacc, dq_acc);
+ max17042_write_verify_reg(chip->client, MAX17042_dPacc, dP_ACC_200);
+
+ max17042_write_verify_reg(chip->client, MAX17042_FullCAP,
+ config->fullcap);
+ max17042_write_reg(chip->client, MAX17042_DesignCap,
+ config->design_cap);
+ max17042_write_verify_reg(chip->client, MAX17042_FullCAPNom,
+ config->fullcapnom);
+}
+
+/*
+ * Block write all the override values coming from platform data.
+ * This function MUST be called before the POR initialization proceedure
+ * specified by maxim.
+ */
+static inline void max17042_override_por_values(struct max17042_chip *chip)
+{
+ struct i2c_client *client = chip->client;
+ struct max17042_config_data *config = chip->pdata->config_data;
+
+ max17042_override_por(client, MAX17042_TGAIN, config->tgain);
+ max17042_override_por(client, MAx17042_TOFF, config->toff);
+ max17042_override_por(client, MAX17042_CGAIN, config->cgain);
+ max17042_override_por(client, MAX17042_COFF, config->coff);
+
+ max17042_override_por(client, MAX17042_VALRT_Th, config->valrt_thresh);
+ max17042_override_por(client, MAX17042_TALRT_Th, config->talrt_thresh);
+ max17042_override_por(client, MAX17042_SALRT_Th,
+ config->soc_alrt_thresh);
+ max17042_override_por(client, MAX17042_CONFIG, config->config);
+ max17042_override_por(client, MAX17042_SHDNTIMER, config->shdntimer);
+
+ max17042_override_por(client, MAX17042_DesignCap, config->design_cap);
+ max17042_override_por(client, MAX17042_ICHGTerm, config->ichgt_term);
+
+ max17042_override_por(client, MAX17042_AtRate, config->at_rate);
+ max17042_override_por(client, MAX17042_LearnCFG, config->learn_cfg);
+ max17042_override_por(client, MAX17042_FilterCFG, config->filter_cfg);
+ max17042_override_por(client, MAX17042_RelaxCFG, config->relax_cfg);
+ max17042_override_por(client, MAX17042_MiscCFG, config->misc_cfg);
+ max17042_override_por(client, MAX17042_MaskSOC, config->masksoc);
+
+ max17042_override_por(client, MAX17042_FullCAP, config->fullcap);
+ max17042_override_por(client, MAX17042_FullCAPNom, config->fullcapnom);
+ max17042_override_por(client, MAX17042_SOC_empty, config->socempty);
+ max17042_override_por(client, MAX17042_LAvg_empty, config->lavg_empty);
+ max17042_override_por(client, MAX17042_dQacc, config->dqacc);
+ max17042_override_por(client, MAX17042_dPacc, config->dpacc);
+
+ max17042_override_por(client, MAX17042_V_empty, config->vempty);
+ max17042_override_por(client, MAX17042_TempNom, config->temp_nom);
+ max17042_override_por(client, MAX17042_TempLim, config->temp_lim);
+ max17042_override_por(client, MAX17042_FCTC, config->fctc);
+ max17042_override_por(client, MAX17042_RCOMP0, config->rcomp0);
+ max17042_override_por(client, MAX17042_TempCo, config->tcompc0);
+ max17042_override_por(client, MAX17042_EmptyTempCo,
+ config->empty_tempco);
+ max17042_override_por(client, MAX17042_K_empty0, config->kempty0);
+}
+
+static int max17042_init_chip(struct max17042_chip *chip)
+{
+ int ret;
+ int val;
+
+ max17042_override_por_values(chip);
+ /* After Power up, the MAX17042 requires 500mS in order
+ * to perform signal debouncing and initial SOC reporting
+ */
+ msleep(500);
+
+ /* Initialize configaration */
+ max17042_write_config_regs(chip);
+
+ /* write cell characterization data */
+ ret = max17042_init_model(chip);
+ if (ret) {
+ dev_err(&chip->client->dev, "%s init failed\n",
+ __func__);
+ return -EIO;
+ }
+ max17042_verify_model_lock(chip);
+ if (ret) {
+ dev_err(&chip->client->dev, "%s lock verify failed\n",
+ __func__);
+ return -EIO;
+ }
+ /* write custom parameters */
+ max17042_write_custom_regs(chip);
+
+ /* update capacity params */
+ max17042_update_capacity_regs(chip);
+
+ /* delay must be atleast 350mS to allow VFSOC
+ * to be calculated from the new configuration
+ */
+ msleep(350);
+
+ /* reset vfsoc0 reg */
+ max17042_reset_vfsoc0_reg(chip);
+
+ /* load new capacity params */
+ max17042_load_new_capacity_params(chip);
+
+ /* Init complete, Clear the POR bit */
+ val = max17042_read_reg(chip->client, MAX17042_STATUS);
+ max17042_write_reg(chip->client, MAX17042_STATUS,
+ val & (~STATUS_POR_BIT));
+ return 0;
+}
+
+static void max17042_set_soc_threshold(struct max17042_chip *chip, u16 off)
+{
+ u16 soc, soc_tr;
+
+ /* program interrupt thesholds such that we should
+ * get interrupt for every 'off' perc change in the soc
+ */
+ soc = max17042_read_reg(chip->client, MAX17042_RepSOC) >> 8;
+ soc_tr = (soc + off) << 8;
+ soc_tr |= (soc - off);
+ max17042_write_reg(chip->client, MAX17042_SALRT_Th, soc_tr);
+}
+
+static irqreturn_t max17042_thread_handler(int id, void *dev)
+{
+ struct max17042_chip *chip = dev;
+ u16 val;
+
+ val = max17042_read_reg(chip->client, MAX17042_STATUS);
+ if ((val & STATUS_INTR_SOCMIN_BIT) ||
+ (val & STATUS_INTR_SOCMAX_BIT)) {
+ dev_info(&chip->client->dev, "SOC threshold INTR\n");
+ max17042_set_soc_threshold(chip, 1);
+ }
+
+ power_supply_changed(&chip->battery);
+ return IRQ_HANDLED;
+}
+
+static void max17042_init_worker(struct work_struct *work)
+{
+ struct max17042_chip *chip = container_of(work,
+ struct max17042_chip, work);
+ int ret;
+
+ /* Initialize registers according to values from the platform data */
+ if (chip->pdata->enable_por_init && chip->pdata->config_data) {
+ ret = max17042_init_chip(chip);
+ if (ret)
+ return;
+ }
+
+ chip->init_complete = 1;
+}
+
+#ifdef CONFIG_OF
+static struct max17042_platform_data *
+max17042_get_pdata(struct device *dev)
+{
+ struct device_node *np = dev->of_node;
+ u32 prop;
+ struct max17042_platform_data *pdata;
+
+ if (!np)
+ return dev->platform_data;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
+
+ /*
+ * Require current sense resistor value to be specified for
+ * current-sense functionality to be enabled at all.
+ */
+ if (of_property_read_u32(np, "maxim,rsns-microohm", &prop) == 0) {
+ pdata->r_sns = prop;
+ pdata->enable_current_sense = true;
+ }
+
+ return pdata;
+}
+#else
+static struct max17042_platform_data *
+max17042_get_pdata(struct device *dev)
+{
+ return dev->platform_data;
+}
+#endif
+
+static int __devinit max17042_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct max17042_chip *chip;
+ int ret;
+ int reg;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA))
+ return -EIO;
+
+ chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->client = client;
+ chip->pdata = max17042_get_pdata(&client->dev);
+ if (!chip->pdata) {
+ dev_err(&client->dev, "no platform data provided\n");
+ return -EINVAL;
+ }
+
+ i2c_set_clientdata(client, chip);
+
+ chip->battery.name = "max17042_battery";
+ chip->battery.type = POWER_SUPPLY_TYPE_BATTERY;
+ chip->battery.get_property = max17042_get_property;
+ chip->battery.properties = max17042_battery_props;
+ chip->battery.num_properties = ARRAY_SIZE(max17042_battery_props);
+
+ /* When current is not measured,
+ * CURRENT_NOW and CURRENT_AVG properties should be invisible. */
+ if (!chip->pdata->enable_current_sense)
+ chip->battery.num_properties -= 2;
+
+ if (chip->pdata->r_sns == 0)
+ chip->pdata->r_sns = MAX17042_DEFAULT_SNS_RESISTOR;
+
+ if (chip->pdata->init_data)
+ max17042_set_reg(client, chip->pdata->init_data,
+ chip->pdata->num_init_data);
+
+ if (!chip->pdata->enable_current_sense) {
+ max17042_write_reg(client, MAX17042_CGAIN, 0x0000);
+ max17042_write_reg(client, MAX17042_MiscCFG, 0x0003);
+ max17042_write_reg(client, MAX17042_LearnCFG, 0x0007);
+ }
+
+ if (client->irq) {
+ ret = request_threaded_irq(client->irq, NULL,
+ max17042_thread_handler,
+ IRQF_TRIGGER_FALLING,
+ chip->battery.name, chip);
+ if (!ret) {
+ reg = max17042_read_reg(client, MAX17042_CONFIG);
+ reg |= CONFIG_ALRT_BIT_ENBL;
+ max17042_write_reg(client, MAX17042_CONFIG, reg);
+ max17042_set_soc_threshold(chip, 1);
+ } else
+ dev_err(&client->dev, "%s(): cannot get IRQ\n",
+ __func__);
+ }
+
+ reg = max17042_read_reg(chip->client, MAX17042_STATUS);
+
+ if (reg & STATUS_POR_BIT) {
+ INIT_WORK(&chip->work, max17042_init_worker);
+ schedule_work(&chip->work);
+ } else {
+ chip->init_complete = 1;
+ }
+
+ ret = power_supply_register(&client->dev, &chip->battery);
+ if (ret)
+ dev_err(&client->dev, "failed: power supply register\n");
+ return ret;
+}
+
+static int __devexit max17042_remove(struct i2c_client *client)
+{
+ struct max17042_chip *chip = i2c_get_clientdata(client);
+
+ power_supply_unregister(&chip->battery);
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id max17042_dt_match[] = {
+ { .compatible = "maxim,max17042" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, max17042_dt_match);
+#endif
+
+static const struct i2c_device_id max17042_id[] = {
+ { "max17042", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max17042_id);
+
+static struct i2c_driver max17042_i2c_driver = {
+ .driver = {
+ .name = "max17042",
+ .of_match_table = of_match_ptr(max17042_dt_match),
+ },
+ .probe = max17042_probe,
+ .remove = __devexit_p(max17042_remove),
+ .id_table = max17042_id,
+};
+module_i2c_driver(max17042_i2c_driver);
+
+MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
+MODULE_DESCRIPTION("MAX17042 Fuel Gauge");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/max8903_charger.c b/ap/os/linux/linux-3.4.x/drivers/power/max8903_charger.c
new file mode 100644
index 0000000..3e23f43
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/max8903_charger.c
@@ -0,0 +1,382 @@
+/*
+ * max8903_charger.c - Maxim 8903 USB/Adapter Charger Driver
+ *
+ * Copyright (C) 2011 Samsung Electronics
+ * MyungJoo Ham <myungjoo.ham@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/power_supply.h>
+#include <linux/platform_device.h>
+#include <linux/power/max8903_charger.h>
+
+struct max8903_data {
+ struct max8903_pdata pdata;
+ struct device *dev;
+ struct power_supply psy;
+ bool fault;
+ bool usb_in;
+ bool ta_in;
+};
+
+static enum power_supply_property max8903_charger_props[] = {
+ POWER_SUPPLY_PROP_STATUS, /* Charger status output */
+ POWER_SUPPLY_PROP_ONLINE, /* External power source */
+ POWER_SUPPLY_PROP_HEALTH, /* Fault or OK */
+};
+
+static int max8903_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max8903_data *data = container_of(psy,
+ struct max8903_data, psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
+ if (data->pdata.chg) {
+ if (gpio_get_value(data->pdata.chg) == 0)
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else if (data->usb_in || data->ta_in)
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = 0;
+ if (data->usb_in || data->ta_in)
+ val->intval = 1;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ if (data->fault)
+ val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static irqreturn_t max8903_dcin(int irq, void *_data)
+{
+ struct max8903_data *data = _data;
+ struct max8903_pdata *pdata = &data->pdata;
+ bool ta_in;
+ enum power_supply_type old_type;
+
+ ta_in = gpio_get_value(pdata->dok) ? false : true;
+
+ if (ta_in == data->ta_in)
+ return IRQ_HANDLED;
+
+ data->ta_in = ta_in;
+
+ /* Set Current-Limit-Mode 1:DC 0:USB */
+ if (pdata->dcm)
+ gpio_set_value(pdata->dcm, ta_in ? 1 : 0);
+
+ /* Charger Enable / Disable (cen is negated) */
+ if (pdata->cen)
+ gpio_set_value(pdata->cen, ta_in ? 0 :
+ (data->usb_in ? 0 : 1));
+
+ dev_dbg(data->dev, "TA(DC-IN) Charger %s.\n", ta_in ?
+ "Connected" : "Disconnected");
+
+ old_type = data->psy.type;
+
+ if (data->ta_in)
+ data->psy.type = POWER_SUPPLY_TYPE_MAINS;
+ else if (data->usb_in)
+ data->psy.type = POWER_SUPPLY_TYPE_USB;
+ else
+ data->psy.type = POWER_SUPPLY_TYPE_BATTERY;
+
+ if (old_type != data->psy.type)
+ power_supply_changed(&data->psy);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t max8903_usbin(int irq, void *_data)
+{
+ struct max8903_data *data = _data;
+ struct max8903_pdata *pdata = &data->pdata;
+ bool usb_in;
+ enum power_supply_type old_type;
+
+ usb_in = gpio_get_value(pdata->uok) ? false : true;
+
+ if (usb_in == data->usb_in)
+ return IRQ_HANDLED;
+
+ data->usb_in = usb_in;
+
+ /* Do not touch Current-Limit-Mode */
+
+ /* Charger Enable / Disable (cen is negated) */
+ if (pdata->cen)
+ gpio_set_value(pdata->cen, usb_in ? 0 :
+ (data->ta_in ? 0 : 1));
+
+ dev_dbg(data->dev, "USB Charger %s.\n", usb_in ?
+ "Connected" : "Disconnected");
+
+ old_type = data->psy.type;
+
+ if (data->ta_in)
+ data->psy.type = POWER_SUPPLY_TYPE_MAINS;
+ else if (data->usb_in)
+ data->psy.type = POWER_SUPPLY_TYPE_USB;
+ else
+ data->psy.type = POWER_SUPPLY_TYPE_BATTERY;
+
+ if (old_type != data->psy.type)
+ power_supply_changed(&data->psy);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t max8903_fault(int irq, void *_data)
+{
+ struct max8903_data *data = _data;
+ struct max8903_pdata *pdata = &data->pdata;
+ bool fault;
+
+ fault = gpio_get_value(pdata->flt) ? false : true;
+
+ if (fault == data->fault)
+ return IRQ_HANDLED;
+
+ data->fault = fault;
+
+ if (fault)
+ dev_err(data->dev, "Charger suffers a fault and stops.\n");
+ else
+ dev_err(data->dev, "Charger recovered from a fault.\n");
+
+ return IRQ_HANDLED;
+}
+
+static __devinit int max8903_probe(struct platform_device *pdev)
+{
+ struct max8903_data *data;
+ struct device *dev = &pdev->dev;
+ struct max8903_pdata *pdata = pdev->dev.platform_data;
+ int ret = 0;
+ int gpio;
+ int ta_in = 0;
+ int usb_in = 0;
+
+ data = kzalloc(sizeof(struct max8903_data), GFP_KERNEL);
+ if (data == NULL) {
+ dev_err(dev, "Cannot allocate memory.\n");
+ return -ENOMEM;
+ }
+ memcpy(&data->pdata, pdata, sizeof(struct max8903_pdata));
+ data->dev = dev;
+ platform_set_drvdata(pdev, data);
+
+ if (pdata->dc_valid == false && pdata->usb_valid == false) {
+ dev_err(dev, "No valid power sources.\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (pdata->dc_valid) {
+ if (pdata->dok && gpio_is_valid(pdata->dok) &&
+ pdata->dcm && gpio_is_valid(pdata->dcm)) {
+ gpio = pdata->dok; /* PULL_UPed Interrupt */
+ ta_in = gpio_get_value(gpio) ? 0 : 1;
+
+ gpio = pdata->dcm; /* Output */
+ gpio_set_value(gpio, ta_in);
+ } else {
+ dev_err(dev, "When DC is wired, DOK and DCM should"
+ " be wired as well.\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ } else {
+ if (pdata->dcm) {
+ if (gpio_is_valid(pdata->dcm))
+ gpio_set_value(pdata->dcm, 0);
+ else {
+ dev_err(dev, "Invalid pin: dcm.\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+ }
+
+ if (pdata->usb_valid) {
+ if (pdata->uok && gpio_is_valid(pdata->uok)) {
+ gpio = pdata->uok;
+ usb_in = gpio_get_value(gpio) ? 0 : 1;
+ } else {
+ dev_err(dev, "When USB is wired, UOK should be wired."
+ "as well.\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+
+ if (pdata->cen) {
+ if (gpio_is_valid(pdata->cen)) {
+ gpio_set_value(pdata->cen, (ta_in || usb_in) ? 0 : 1);
+ } else {
+ dev_err(dev, "Invalid pin: cen.\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+
+ if (pdata->chg) {
+ if (!gpio_is_valid(pdata->chg)) {
+ dev_err(dev, "Invalid pin: chg.\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+
+ if (pdata->flt) {
+ if (!gpio_is_valid(pdata->flt)) {
+ dev_err(dev, "Invalid pin: flt.\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+
+ if (pdata->usus) {
+ if (!gpio_is_valid(pdata->usus)) {
+ dev_err(dev, "Invalid pin: usus.\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+
+ data->fault = false;
+ data->ta_in = ta_in;
+ data->usb_in = usb_in;
+
+ data->psy.name = "max8903_charger";
+ data->psy.type = (ta_in) ? POWER_SUPPLY_TYPE_MAINS :
+ ((usb_in) ? POWER_SUPPLY_TYPE_USB :
+ POWER_SUPPLY_TYPE_BATTERY);
+ data->psy.get_property = max8903_get_property;
+ data->psy.properties = max8903_charger_props;
+ data->psy.num_properties = ARRAY_SIZE(max8903_charger_props);
+
+ ret = power_supply_register(dev, &data->psy);
+ if (ret) {
+ dev_err(dev, "failed: power supply register.\n");
+ goto err;
+ }
+
+ if (pdata->dc_valid) {
+ ret = request_threaded_irq(gpio_to_irq(pdata->dok),
+ NULL, max8903_dcin,
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+ "MAX8903 DC IN", data);
+ if (ret) {
+ dev_err(dev, "Cannot request irq %d for DC (%d)\n",
+ gpio_to_irq(pdata->dok), ret);
+ goto err_psy;
+ }
+ }
+
+ if (pdata->usb_valid) {
+ ret = request_threaded_irq(gpio_to_irq(pdata->uok),
+ NULL, max8903_usbin,
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+ "MAX8903 USB IN", data);
+ if (ret) {
+ dev_err(dev, "Cannot request irq %d for USB (%d)\n",
+ gpio_to_irq(pdata->uok), ret);
+ goto err_dc_irq;
+ }
+ }
+
+ if (pdata->flt) {
+ ret = request_threaded_irq(gpio_to_irq(pdata->flt),
+ NULL, max8903_fault,
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+ "MAX8903 Fault", data);
+ if (ret) {
+ dev_err(dev, "Cannot request irq %d for Fault (%d)\n",
+ gpio_to_irq(pdata->flt), ret);
+ goto err_usb_irq;
+ }
+ }
+
+ return 0;
+
+err_usb_irq:
+ if (pdata->usb_valid)
+ free_irq(gpio_to_irq(pdata->uok), data);
+err_dc_irq:
+ if (pdata->dc_valid)
+ free_irq(gpio_to_irq(pdata->dok), data);
+err_psy:
+ power_supply_unregister(&data->psy);
+err:
+ kfree(data);
+ return ret;
+}
+
+static __devexit int max8903_remove(struct platform_device *pdev)
+{
+ struct max8903_data *data = platform_get_drvdata(pdev);
+
+ if (data) {
+ struct max8903_pdata *pdata = &data->pdata;
+
+ if (pdata->flt)
+ free_irq(gpio_to_irq(pdata->flt), data);
+ if (pdata->usb_valid)
+ free_irq(gpio_to_irq(pdata->uok), data);
+ if (pdata->dc_valid)
+ free_irq(gpio_to_irq(pdata->dok), data);
+ power_supply_unregister(&data->psy);
+ kfree(data);
+ }
+
+ return 0;
+}
+
+static struct platform_driver max8903_driver = {
+ .probe = max8903_probe,
+ .remove = __devexit_p(max8903_remove),
+ .driver = {
+ .name = "max8903-charger",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(max8903_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("MAX8903 Charger Driver");
+MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
+MODULE_ALIAS("platform:max8903-charger");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/max8925_power.c b/ap/os/linux/linux-3.4.x/drivers/power/max8925_power.c
new file mode 100644
index 0000000..daa333b
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/max8925_power.c
@@ -0,0 +1,530 @@
+/*
+ * Battery driver for Maxim MAX8925
+ *
+ * Copyright (c) 2009-2010 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/mfd/max8925.h>
+
+/* registers in GPM */
+#define MAX8925_OUT5VEN 0x54
+#define MAX8925_OUT3VEN 0x58
+#define MAX8925_CHG_CNTL1 0x7c
+
+/* bits definition */
+#define MAX8925_CHG_STAT_VSYSLOW (1 << 0)
+#define MAX8925_CHG_STAT_MODE_MASK (3 << 2)
+#define MAX8925_CHG_STAT_EN_MASK (1 << 4)
+#define MAX8925_CHG_MBDET (1 << 1)
+#define MAX8925_CHG_AC_RANGE_MASK (3 << 6)
+
+/* registers in ADC */
+#define MAX8925_ADC_RES_CNFG1 0x06
+#define MAX8925_ADC_AVG_CNFG1 0x07
+#define MAX8925_ADC_ACQ_CNFG1 0x08
+#define MAX8925_ADC_ACQ_CNFG2 0x09
+/* 2 bytes registers in below. MSB is 1st, LSB is 2nd. */
+#define MAX8925_ADC_AUX2 0x62
+#define MAX8925_ADC_VCHG 0x64
+#define MAX8925_ADC_VBBATT 0x66
+#define MAX8925_ADC_VMBATT 0x68
+#define MAX8925_ADC_ISNS 0x6a
+#define MAX8925_ADC_THM 0x6c
+#define MAX8925_ADC_TDIE 0x6e
+#define MAX8925_CMD_AUX2 0xc8
+#define MAX8925_CMD_VCHG 0xd0
+#define MAX8925_CMD_VBBATT 0xd8
+#define MAX8925_CMD_VMBATT 0xe0
+#define MAX8925_CMD_ISNS 0xe8
+#define MAX8925_CMD_THM 0xf0
+#define MAX8925_CMD_TDIE 0xf8
+
+enum {
+ MEASURE_AUX2,
+ MEASURE_VCHG,
+ MEASURE_VBBATT,
+ MEASURE_VMBATT,
+ MEASURE_ISNS,
+ MEASURE_THM,
+ MEASURE_TDIE,
+ MEASURE_MAX,
+};
+
+struct max8925_power_info {
+ struct max8925_chip *chip;
+ struct i2c_client *gpm;
+ struct i2c_client *adc;
+
+ struct power_supply ac;
+ struct power_supply usb;
+ struct power_supply battery;
+ int irq_base;
+ unsigned ac_online:1;
+ unsigned usb_online:1;
+ unsigned bat_online:1;
+ unsigned chg_mode:2;
+ unsigned batt_detect:1; /* detecing MB by ID pin */
+ unsigned topoff_threshold:2;
+ unsigned fast_charge:3;
+ unsigned no_temp_support:1;
+ unsigned no_insert_detect:1;
+
+ int (*set_charger) (int);
+};
+
+static int __set_charger(struct max8925_power_info *info, int enable)
+{
+ struct max8925_chip *chip = info->chip;
+ if (enable) {
+ /* enable charger in platform */
+ if (info->set_charger)
+ info->set_charger(1);
+ /* enable charger */
+ max8925_set_bits(info->gpm, MAX8925_CHG_CNTL1, 1 << 7, 0);
+ } else {
+ /* disable charge */
+ max8925_set_bits(info->gpm, MAX8925_CHG_CNTL1, 1 << 7, 1 << 7);
+ if (info->set_charger)
+ info->set_charger(0);
+ }
+ dev_dbg(chip->dev, "%s\n", (enable) ? "Enable charger"
+ : "Disable charger");
+ return 0;
+}
+
+static irqreturn_t max8925_charger_handler(int irq, void *data)
+{
+ struct max8925_power_info *info = (struct max8925_power_info *)data;
+ struct max8925_chip *chip = info->chip;
+
+ switch (irq - chip->irq_base) {
+ case MAX8925_IRQ_VCHG_DC_R:
+ info->ac_online = 1;
+ __set_charger(info, 1);
+ dev_dbg(chip->dev, "Adapter inserted\n");
+ break;
+ case MAX8925_IRQ_VCHG_DC_F:
+ info->ac_online = 0;
+ __set_charger(info, 0);
+ dev_dbg(chip->dev, "Adapter removed\n");
+ break;
+ case MAX8925_IRQ_VCHG_THM_OK_F:
+ /* Battery is not ready yet */
+ dev_dbg(chip->dev, "Battery temperature is out of range\n");
+ case MAX8925_IRQ_VCHG_DC_OVP:
+ dev_dbg(chip->dev, "Error detection\n");
+ __set_charger(info, 0);
+ break;
+ case MAX8925_IRQ_VCHG_THM_OK_R:
+ /* Battery is ready now */
+ dev_dbg(chip->dev, "Battery temperature is in range\n");
+ break;
+ case MAX8925_IRQ_VCHG_SYSLOW_R:
+ /* VSYS is low */
+ dev_info(chip->dev, "Sys power is too low\n");
+ break;
+ case MAX8925_IRQ_VCHG_SYSLOW_F:
+ dev_dbg(chip->dev, "Sys power is above low threshold\n");
+ break;
+ case MAX8925_IRQ_VCHG_DONE:
+ __set_charger(info, 0);
+ dev_dbg(chip->dev, "Charging is done\n");
+ break;
+ case MAX8925_IRQ_VCHG_TOPOFF:
+ dev_dbg(chip->dev, "Charging in top-off mode\n");
+ break;
+ case MAX8925_IRQ_VCHG_TMR_FAULT:
+ __set_charger(info, 0);
+ dev_dbg(chip->dev, "Safe timer is expired\n");
+ break;
+ case MAX8925_IRQ_VCHG_RST:
+ __set_charger(info, 0);
+ dev_dbg(chip->dev, "Charger is reset\n");
+ break;
+ }
+ return IRQ_HANDLED;
+}
+
+static int start_measure(struct max8925_power_info *info, int type)
+{
+ unsigned char buf[2] = {0, 0};
+ int meas_cmd;
+ int meas_reg = 0, ret;
+
+ switch (type) {
+ case MEASURE_VCHG:
+ meas_cmd = MAX8925_CMD_VCHG;
+ meas_reg = MAX8925_ADC_VCHG;
+ break;
+ case MEASURE_VBBATT:
+ meas_cmd = MAX8925_CMD_VBBATT;
+ meas_reg = MAX8925_ADC_VBBATT;
+ break;
+ case MEASURE_VMBATT:
+ meas_cmd = MAX8925_CMD_VMBATT;
+ meas_reg = MAX8925_ADC_VMBATT;
+ break;
+ case MEASURE_ISNS:
+ meas_cmd = MAX8925_CMD_ISNS;
+ meas_reg = MAX8925_ADC_ISNS;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ max8925_reg_write(info->adc, meas_cmd, 0);
+ max8925_bulk_read(info->adc, meas_reg, 2, buf);
+ ret = ((buf[0]<<8) | buf[1]) >> 4;
+
+ return ret;
+}
+
+static int max8925_ac_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max8925_power_info *info = dev_get_drvdata(psy->dev->parent);
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = info->ac_online;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ if (info->ac_online) {
+ ret = start_measure(info, MEASURE_VCHG);
+ if (ret >= 0) {
+ val->intval = ret * 2000; /* unit is uV */
+ goto out;
+ }
+ }
+ ret = -ENODATA;
+ break;
+ default:
+ ret = -ENODEV;
+ break;
+ }
+out:
+ return ret;
+}
+
+static enum power_supply_property max8925_ac_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+};
+
+static int max8925_usb_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max8925_power_info *info = dev_get_drvdata(psy->dev->parent);
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = info->usb_online;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ if (info->usb_online) {
+ ret = start_measure(info, MEASURE_VCHG);
+ if (ret >= 0) {
+ val->intval = ret * 2000; /* unit is uV */
+ goto out;
+ }
+ }
+ ret = -ENODATA;
+ break;
+ default:
+ ret = -ENODEV;
+ break;
+ }
+out:
+ return ret;
+}
+
+static enum power_supply_property max8925_usb_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+};
+
+static int max8925_bat_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max8925_power_info *info = dev_get_drvdata(psy->dev->parent);
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = info->bat_online;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ if (info->bat_online) {
+ ret = start_measure(info, MEASURE_VMBATT);
+ if (ret >= 0) {
+ val->intval = ret * 2000; /* unit is uV */
+ ret = 0;
+ break;
+ }
+ }
+ ret = -ENODATA;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ if (info->bat_online) {
+ ret = start_measure(info, MEASURE_ISNS);
+ if (ret >= 0) {
+ /* assume r_sns is 0.02 */
+ ret = ((ret * 6250) - 3125) /* uA */;
+ val->intval = 0;
+ if (ret > 0)
+ val->intval = ret; /* unit is mA */
+ ret = 0;
+ break;
+ }
+ }
+ ret = -ENODATA;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ if (!info->bat_online) {
+ ret = -ENODATA;
+ break;
+ }
+ ret = max8925_reg_read(info->gpm, MAX8925_CHG_STATUS);
+ ret = (ret & MAX8925_CHG_STAT_MODE_MASK) >> 2;
+ switch (ret) {
+ case 1:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ break;
+ case 0:
+ case 2:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ break;
+ case 3:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
+ }
+ ret = 0;
+ break;
+ case POWER_SUPPLY_PROP_STATUS:
+ if (!info->bat_online) {
+ ret = -ENODATA;
+ break;
+ }
+ ret = max8925_reg_read(info->gpm, MAX8925_CHG_STATUS);
+ if (info->usb_online || info->ac_online) {
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ if (ret & MAX8925_CHG_STAT_EN_MASK)
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ } else
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ ret = 0;
+ break;
+ default:
+ ret = -ENODEV;
+ break;
+ }
+ return ret;
+}
+
+static enum power_supply_property max8925_battery_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_STATUS,
+};
+
+#define REQUEST_IRQ(_irq, _name) \
+do { \
+ ret = request_threaded_irq(chip->irq_base + _irq, NULL, \
+ max8925_charger_handler, \
+ IRQF_ONESHOT, _name, info); \
+ if (ret) \
+ dev_err(chip->dev, "Failed to request IRQ #%d: %d\n", \
+ _irq, ret); \
+} while (0)
+
+static __devinit int max8925_init_charger(struct max8925_chip *chip,
+ struct max8925_power_info *info)
+{
+ int ret;
+
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_OVP, "ac-ovp");
+ if (!info->no_insert_detect) {
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_F, "ac-remove");
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_R, "ac-insert");
+ }
+ if (!info->no_temp_support) {
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_THM_OK_R, "batt-temp-in-range");
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_THM_OK_F, "batt-temp-out-range");
+ }
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_SYSLOW_F, "vsys-high");
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_SYSLOW_R, "vsys-low");
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_RST, "charger-reset");
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_DONE, "charger-done");
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_TOPOFF, "charger-topoff");
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_TMR_FAULT, "charger-timer-expire");
+
+ info->usb_online = 0;
+ info->bat_online = 0;
+
+ /* check for power - can miss interrupt at boot time */
+ if (start_measure(info, MEASURE_VCHG) * 2000 > 500000)
+ info->ac_online = 1;
+ else
+ info->ac_online = 0;
+
+ ret = max8925_reg_read(info->gpm, MAX8925_CHG_STATUS);
+ if (ret >= 0) {
+ /*
+ * If battery detection is enabled, ID pin of battery is
+ * connected to MBDET pin of MAX8925. It could be used to
+ * detect battery presence.
+ * Otherwise, we have to assume that battery is always on.
+ */
+ if (info->batt_detect)
+ info->bat_online = (ret & MAX8925_CHG_MBDET) ? 0 : 1;
+ else
+ info->bat_online = 1;
+ if (ret & MAX8925_CHG_AC_RANGE_MASK)
+ info->ac_online = 1;
+ else
+ info->ac_online = 0;
+ }
+ /* disable charge */
+ max8925_set_bits(info->gpm, MAX8925_CHG_CNTL1, 1 << 7, 1 << 7);
+ /* set charging current in charge topoff mode */
+ max8925_set_bits(info->gpm, MAX8925_CHG_CNTL1, 3 << 5,
+ info->topoff_threshold << 5);
+ /* set charing current in fast charge mode */
+ max8925_set_bits(info->gpm, MAX8925_CHG_CNTL1, 7, info->fast_charge);
+
+ return 0;
+}
+
+static __devexit int max8925_deinit_charger(struct max8925_power_info *info)
+{
+ struct max8925_chip *chip = info->chip;
+ int irq;
+
+ irq = chip->irq_base + MAX8925_IRQ_VCHG_DC_OVP;
+ for (; irq <= chip->irq_base + MAX8925_IRQ_VCHG_TMR_FAULT; irq++)
+ free_irq(irq, info);
+
+ return 0;
+}
+
+static __devinit int max8925_power_probe(struct platform_device *pdev)
+{
+ struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
+ struct max8925_power_pdata *pdata = NULL;
+ struct max8925_power_info *info;
+ int ret;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev, "platform data isn't assigned to "
+ "power supply\n");
+ return -EINVAL;
+ }
+
+ info = kzalloc(sizeof(struct max8925_power_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+ info->chip = chip;
+ info->gpm = chip->i2c;
+ info->adc = chip->adc;
+ platform_set_drvdata(pdev, info);
+
+ info->ac.name = "max8925-ac";
+ info->ac.type = POWER_SUPPLY_TYPE_MAINS;
+ info->ac.properties = max8925_ac_props;
+ info->ac.num_properties = ARRAY_SIZE(max8925_ac_props);
+ info->ac.get_property = max8925_ac_get_prop;
+ info->ac.supplied_to = pdata->supplied_to;
+ info->ac.num_supplicants = pdata->num_supplicants;
+ ret = power_supply_register(&pdev->dev, &info->ac);
+ if (ret)
+ goto out;
+ info->ac.dev->parent = &pdev->dev;
+
+ info->usb.name = "max8925-usb";
+ info->usb.type = POWER_SUPPLY_TYPE_USB;
+ info->usb.properties = max8925_usb_props;
+ info->usb.num_properties = ARRAY_SIZE(max8925_usb_props);
+ info->usb.get_property = max8925_usb_get_prop;
+ info->usb.supplied_to = pdata->supplied_to;
+ info->usb.num_supplicants = pdata->num_supplicants;
+
+ ret = power_supply_register(&pdev->dev, &info->usb);
+ if (ret)
+ goto out_usb;
+ info->usb.dev->parent = &pdev->dev;
+
+ info->battery.name = "max8925-battery";
+ info->battery.type = POWER_SUPPLY_TYPE_BATTERY;
+ info->battery.properties = max8925_battery_props;
+ info->battery.num_properties = ARRAY_SIZE(max8925_battery_props);
+ info->battery.get_property = max8925_bat_get_prop;
+ ret = power_supply_register(&pdev->dev, &info->battery);
+ if (ret)
+ goto out_battery;
+ info->battery.dev->parent = &pdev->dev;
+
+ info->batt_detect = pdata->batt_detect;
+ info->topoff_threshold = pdata->topoff_threshold;
+ info->fast_charge = pdata->fast_charge;
+ info->set_charger = pdata->set_charger;
+ info->no_temp_support = pdata->no_temp_support;
+ info->no_insert_detect = pdata->no_insert_detect;
+
+ max8925_init_charger(chip, info);
+ return 0;
+out_battery:
+ power_supply_unregister(&info->battery);
+out_usb:
+ power_supply_unregister(&info->ac);
+out:
+ kfree(info);
+ return ret;
+}
+
+static __devexit int max8925_power_remove(struct platform_device *pdev)
+{
+ struct max8925_power_info *info = platform_get_drvdata(pdev);
+
+ if (info) {
+ power_supply_unregister(&info->ac);
+ power_supply_unregister(&info->usb);
+ power_supply_unregister(&info->battery);
+ max8925_deinit_charger(info);
+ kfree(info);
+ }
+ return 0;
+}
+
+static struct platform_driver max8925_power_driver = {
+ .probe = max8925_power_probe,
+ .remove = __devexit_p(max8925_power_remove),
+ .driver = {
+ .name = "max8925-power",
+ },
+};
+
+module_platform_driver(max8925_power_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Power supply driver for MAX8925");
+MODULE_ALIAS("platform:max8925-power");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/max8997_charger.c b/ap/os/linux/linux-3.4.x/drivers/power/max8997_charger.c
new file mode 100644
index 0000000..6e88c5d
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/max8997_charger.c
@@ -0,0 +1,208 @@
+/*
+ * max8997_charger.c - Power supply consumer driver for the Maxim 8997/8966
+ *
+ * Copyright (C) 2011 Samsung Electronics
+ * MyungJoo Ham <myungjoo.ham@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/mfd/max8997.h>
+#include <linux/mfd/max8997-private.h>
+
+struct charger_data {
+ struct device *dev;
+ struct max8997_dev *iodev;
+ struct power_supply battery;
+};
+
+static enum power_supply_property max8997_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS, /* "FULL" or "NOT FULL" only. */
+ POWER_SUPPLY_PROP_PRESENT, /* the presence of battery */
+ POWER_SUPPLY_PROP_ONLINE, /* charger is active or not */
+};
+
+/* Note that the charger control is done by a current regulator "CHARGER" */
+static int max8997_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct charger_data *charger = container_of(psy,
+ struct charger_data, battery);
+ struct i2c_client *i2c = charger->iodev->i2c;
+ int ret;
+ u8 reg;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = 0;
+ ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, ®);
+ if (ret)
+ return ret;
+ if ((reg & (1 << 0)) == 0x1)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = 0;
+ ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, ®);
+ if (ret)
+ return ret;
+ if ((reg & (1 << 2)) == 0x0)
+ val->intval = 1;
+
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = 0;
+ ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, ®);
+ if (ret)
+ return ret;
+ /* DCINOK */
+ if (reg & (1 << 1))
+ val->intval = 1;
+
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static __devinit int max8997_battery_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+ struct charger_data *charger;
+ struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+ struct max8997_platform_data *pdata = dev_get_platdata(iodev->dev);
+
+ if (!pdata)
+ return -EINVAL;
+
+ if (pdata->eoc_mA) {
+ int val = (pdata->eoc_mA - 50) / 10;
+ if (val < 0)
+ val = 0;
+ if (val > 0xf)
+ val = 0xf;
+
+ ret = max8997_update_reg(iodev->i2c,
+ MAX8997_REG_MBCCTRL5, val, 0xf);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Cannot use i2c bus.\n");
+ return ret;
+ }
+ }
+
+ switch (pdata->timeout) {
+ case 5:
+ ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
+ 0x2 << 4, 0x7 << 4);
+ break;
+ case 6:
+ ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
+ 0x3 << 4, 0x7 << 4);
+ break;
+ case 7:
+ ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
+ 0x4 << 4, 0x7 << 4);
+ break;
+ case 0:
+ ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
+ 0x7 << 4, 0x7 << 4);
+ break;
+ default:
+ dev_err(&pdev->dev, "incorrect timeout value (%d)\n",
+ pdata->timeout);
+ return -EINVAL;
+ }
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Cannot use i2c bus.\n");
+ return ret;
+ }
+
+ charger = kzalloc(sizeof(struct charger_data), GFP_KERNEL);
+ if (charger == NULL) {
+ dev_err(&pdev->dev, "Cannot allocate memory.\n");
+ return -ENOMEM;
+ }
+
+ platform_set_drvdata(pdev, charger);
+
+ charger->battery.name = "max8997_pmic";
+ charger->battery.type = POWER_SUPPLY_TYPE_BATTERY;
+ charger->battery.get_property = max8997_battery_get_property;
+ charger->battery.properties = max8997_battery_props;
+ charger->battery.num_properties = ARRAY_SIZE(max8997_battery_props);
+
+ charger->dev = &pdev->dev;
+ charger->iodev = iodev;
+
+ ret = power_supply_register(&pdev->dev, &charger->battery);
+ if (ret) {
+ dev_err(&pdev->dev, "failed: power supply register\n");
+ goto err;
+ }
+
+ return 0;
+err:
+ kfree(charger);
+ return ret;
+}
+
+static int __devexit max8997_battery_remove(struct platform_device *pdev)
+{
+ struct charger_data *charger = platform_get_drvdata(pdev);
+
+ power_supply_unregister(&charger->battery);
+ kfree(charger);
+ return 0;
+}
+
+static const struct platform_device_id max8997_battery_id[] = {
+ { "max8997-battery", 0 },
+ { }
+};
+
+static struct platform_driver max8997_battery_driver = {
+ .driver = {
+ .name = "max8997-battery",
+ .owner = THIS_MODULE,
+ },
+ .probe = max8997_battery_probe,
+ .remove = __devexit_p(max8997_battery_remove),
+ .id_table = max8997_battery_id,
+};
+
+static int __init max8997_battery_init(void)
+{
+ return platform_driver_register(&max8997_battery_driver);
+}
+subsys_initcall(max8997_battery_init);
+
+static void __exit max8997_battery_cleanup(void)
+{
+ platform_driver_unregister(&max8997_battery_driver);
+}
+module_exit(max8997_battery_cleanup);
+
+MODULE_DESCRIPTION("MAXIM 8997/8966 battery control driver");
+MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/max8998_charger.c b/ap/os/linux/linux-3.4.x/drivers/power/max8998_charger.c
new file mode 100644
index 0000000..6dc01c2
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/max8998_charger.c
@@ -0,0 +1,211 @@
+/*
+ * max8998_charger.c - Power supply consumer driver for the Maxim 8998/LP3974
+ *
+ * Copyright (C) 2009-2010 Samsung Electronics
+ * MyungJoo Ham <myungjoo.ham@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/mfd/max8998.h>
+#include <linux/mfd/max8998-private.h>
+
+struct max8998_battery_data {
+ struct device *dev;
+ struct max8998_dev *iodev;
+ struct power_supply battery;
+};
+
+static enum power_supply_property max8998_battery_props[] = {
+ POWER_SUPPLY_PROP_PRESENT, /* the presence of battery */
+ POWER_SUPPLY_PROP_ONLINE, /* charger is active or not */
+};
+
+/* Note that the charger control is done by a current regulator "CHARGER" */
+static int max8998_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max8998_battery_data *max8998 = container_of(psy,
+ struct max8998_battery_data, battery);
+ struct i2c_client *i2c = max8998->iodev->i2c;
+ int ret;
+ u8 reg;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ ret = max8998_read_reg(i2c, MAX8998_REG_STATUS2, ®);
+ if (ret)
+ return ret;
+ if (reg & (1 << 4))
+ val->intval = 0;
+ else
+ val->intval = 1;
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = max8998_read_reg(i2c, MAX8998_REG_STATUS2, ®);
+ if (ret)
+ return ret;
+ if (reg & (1 << 3))
+ val->intval = 0;
+ else
+ val->intval = 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static __devinit int max8998_battery_probe(struct platform_device *pdev)
+{
+ struct max8998_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+ struct max8998_platform_data *pdata = dev_get_platdata(iodev->dev);
+ struct max8998_battery_data *max8998;
+ struct i2c_client *i2c;
+ int ret = 0;
+
+ if (!pdata) {
+ dev_err(pdev->dev.parent, "No platform init data supplied\n");
+ return -ENODEV;
+ }
+
+ max8998 = kzalloc(sizeof(struct max8998_battery_data), GFP_KERNEL);
+ if (!max8998)
+ return -ENOMEM;
+
+ max8998->dev = &pdev->dev;
+ max8998->iodev = iodev;
+ platform_set_drvdata(pdev, max8998);
+ i2c = max8998->iodev->i2c;
+
+ /* Setup "End of Charge" */
+ /* If EOC value equals 0,
+ * remain value set from bootloader or default value */
+ if (pdata->eoc >= 10 && pdata->eoc <= 45) {
+ max8998_update_reg(i2c, MAX8998_REG_CHGR1,
+ (pdata->eoc / 5 - 2) << 5, 0x7 << 5);
+ } else if (pdata->eoc == 0) {
+ dev_dbg(max8998->dev,
+ "EOC value not set: leave it unchanged.\n");
+ } else {
+ dev_err(max8998->dev, "Invalid EOC value\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Setup Charge Restart Level */
+ switch (pdata->restart) {
+ case 100:
+ max8998_update_reg(i2c, MAX8998_REG_CHGR1, 0x1 << 3, 0x3 << 3);
+ break;
+ case 150:
+ max8998_update_reg(i2c, MAX8998_REG_CHGR1, 0x0 << 3, 0x3 << 3);
+ break;
+ case 200:
+ max8998_update_reg(i2c, MAX8998_REG_CHGR1, 0x2 << 3, 0x3 << 3);
+ break;
+ case -1:
+ max8998_update_reg(i2c, MAX8998_REG_CHGR1, 0x3 << 3, 0x3 << 3);
+ break;
+ case 0:
+ dev_dbg(max8998->dev,
+ "Restart Level not set: leave it unchanged.\n");
+ break;
+ default:
+ dev_err(max8998->dev, "Invalid Restart Level\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Setup Charge Full Timeout */
+ switch (pdata->timeout) {
+ case 5:
+ max8998_update_reg(i2c, MAX8998_REG_CHGR2, 0x0 << 4, 0x3 << 4);
+ break;
+ case 6:
+ max8998_update_reg(i2c, MAX8998_REG_CHGR2, 0x1 << 4, 0x3 << 4);
+ break;
+ case 7:
+ max8998_update_reg(i2c, MAX8998_REG_CHGR2, 0x2 << 4, 0x3 << 4);
+ break;
+ case -1:
+ max8998_update_reg(i2c, MAX8998_REG_CHGR2, 0x3 << 4, 0x3 << 4);
+ break;
+ case 0:
+ dev_dbg(max8998->dev,
+ "Full Timeout not set: leave it unchanged.\n");
+ break;
+ default:
+ dev_err(max8998->dev, "Invalid Full Timeout value\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ max8998->battery.name = "max8998_pmic";
+ max8998->battery.type = POWER_SUPPLY_TYPE_BATTERY;
+ max8998->battery.get_property = max8998_battery_get_property;
+ max8998->battery.properties = max8998_battery_props;
+ max8998->battery.num_properties = ARRAY_SIZE(max8998_battery_props);
+
+ ret = power_supply_register(max8998->dev, &max8998->battery);
+ if (ret) {
+ dev_err(max8998->dev, "failed: power supply register\n");
+ goto err;
+ }
+
+ return 0;
+err:
+ kfree(max8998);
+ return ret;
+}
+
+static int __devexit max8998_battery_remove(struct platform_device *pdev)
+{
+ struct max8998_battery_data *max8998 = platform_get_drvdata(pdev);
+
+ power_supply_unregister(&max8998->battery);
+ kfree(max8998);
+
+ return 0;
+}
+
+static const struct platform_device_id max8998_battery_id[] = {
+ { "max8998-battery", TYPE_MAX8998 },
+ { }
+};
+
+static struct platform_driver max8998_battery_driver = {
+ .driver = {
+ .name = "max8998-battery",
+ .owner = THIS_MODULE,
+ },
+ .probe = max8998_battery_probe,
+ .remove = __devexit_p(max8998_battery_remove),
+ .id_table = max8998_battery_id,
+};
+
+module_platform_driver(max8998_battery_driver);
+
+MODULE_DESCRIPTION("MAXIM 8998 battery control driver");
+MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:max8998-battery");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/olpc_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/olpc_battery.c
new file mode 100644
index 0000000..7385092
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/olpc_battery.c
@@ -0,0 +1,637 @@
+/*
+ * Battery driver for One Laptop Per Child board.
+ *
+ * Copyright © 2006-2010 David Woodhouse <dwmw2@infradead.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/err.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/jiffies.h>
+#include <linux/sched.h>
+#include <asm/olpc.h>
+
+
+#define EC_BAT_VOLTAGE 0x10 /* uint16_t, *9.76/32, mV */
+#define EC_BAT_CURRENT 0x11 /* int16_t, *15.625/120, mA */
+#define EC_BAT_ACR 0x12 /* int16_t, *6250/15, µAh */
+#define EC_BAT_TEMP 0x13 /* uint16_t, *100/256, °C */
+#define EC_AMB_TEMP 0x14 /* uint16_t, *100/256, °C */
+#define EC_BAT_STATUS 0x15 /* uint8_t, bitmask */
+#define EC_BAT_SOC 0x16 /* uint8_t, percentage */
+#define EC_BAT_SERIAL 0x17 /* uint8_t[6] */
+#define EC_BAT_EEPROM 0x18 /* uint8_t adr as input, uint8_t output */
+#define EC_BAT_ERRCODE 0x1f /* uint8_t, bitmask */
+
+#define BAT_STAT_PRESENT 0x01
+#define BAT_STAT_FULL 0x02
+#define BAT_STAT_LOW 0x04
+#define BAT_STAT_DESTROY 0x08
+#define BAT_STAT_AC 0x10
+#define BAT_STAT_CHARGING 0x20
+#define BAT_STAT_DISCHARGING 0x40
+#define BAT_STAT_TRICKLE 0x80
+
+#define BAT_ERR_INFOFAIL 0x02
+#define BAT_ERR_OVERVOLTAGE 0x04
+#define BAT_ERR_OVERTEMP 0x05
+#define BAT_ERR_GAUGESTOP 0x06
+#define BAT_ERR_OUT_OF_CONTROL 0x07
+#define BAT_ERR_ID_FAIL 0x09
+#define BAT_ERR_ACR_FAIL 0x10
+
+#define BAT_ADDR_MFR_TYPE 0x5F
+
+/*********************************************************************
+ * Power
+ *********************************************************************/
+
+static int olpc_ac_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ uint8_t status;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &status, 1);
+ if (ret)
+ return ret;
+
+ val->intval = !!(status & BAT_STAT_AC);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static enum power_supply_property olpc_ac_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static struct power_supply olpc_ac = {
+ .name = "olpc-ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .properties = olpc_ac_props,
+ .num_properties = ARRAY_SIZE(olpc_ac_props),
+ .get_property = olpc_ac_get_prop,
+};
+
+static char bat_serial[17]; /* Ick */
+
+static int olpc_bat_get_status(union power_supply_propval *val, uint8_t ec_byte)
+{
+ if (olpc_platform_info.ecver > 0x44) {
+ if (ec_byte & (BAT_STAT_CHARGING | BAT_STAT_TRICKLE))
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else if (ec_byte & BAT_STAT_DISCHARGING)
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ else if (ec_byte & BAT_STAT_FULL)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ else /* er,... */
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ } else {
+ /* Older EC didn't report charge/discharge bits */
+ if (!(ec_byte & BAT_STAT_AC)) /* No AC means discharging */
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ else if (ec_byte & BAT_STAT_FULL)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ else /* Not _necessarily_ true but EC doesn't tell all yet */
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ }
+
+ return 0;
+}
+
+static int olpc_bat_get_health(union power_supply_propval *val)
+{
+ uint8_t ec_byte;
+ int ret;
+
+ ret = olpc_ec_cmd(EC_BAT_ERRCODE, NULL, 0, &ec_byte, 1);
+ if (ret)
+ return ret;
+
+ switch (ec_byte) {
+ case 0:
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+
+ case BAT_ERR_OVERTEMP:
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ break;
+
+ case BAT_ERR_OVERVOLTAGE:
+ val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ break;
+
+ case BAT_ERR_INFOFAIL:
+ case BAT_ERR_OUT_OF_CONTROL:
+ case BAT_ERR_ID_FAIL:
+ case BAT_ERR_ACR_FAIL:
+ val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ break;
+
+ default:
+ /* Eep. We don't know this failure code */
+ ret = -EIO;
+ }
+
+ return ret;
+}
+
+static int olpc_bat_get_mfr(union power_supply_propval *val)
+{
+ uint8_t ec_byte;
+ int ret;
+
+ ec_byte = BAT_ADDR_MFR_TYPE;
+ ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
+ if (ret)
+ return ret;
+
+ switch (ec_byte >> 4) {
+ case 1:
+ val->strval = "Gold Peak";
+ break;
+ case 2:
+ val->strval = "BYD";
+ break;
+ default:
+ val->strval = "Unknown";
+ break;
+ }
+
+ return ret;
+}
+
+static int olpc_bat_get_tech(union power_supply_propval *val)
+{
+ uint8_t ec_byte;
+ int ret;
+
+ ec_byte = BAT_ADDR_MFR_TYPE;
+ ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
+ if (ret)
+ return ret;
+
+ switch (ec_byte & 0xf) {
+ case 1:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_NiMH;
+ break;
+ case 2:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LiFe;
+ break;
+ default:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
+ break;
+ }
+
+ return ret;
+}
+
+static int olpc_bat_get_charge_full_design(union power_supply_propval *val)
+{
+ uint8_t ec_byte;
+ union power_supply_propval tech;
+ int ret, mfr;
+
+ ret = olpc_bat_get_tech(&tech);
+ if (ret)
+ return ret;
+
+ ec_byte = BAT_ADDR_MFR_TYPE;
+ ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
+ if (ret)
+ return ret;
+
+ mfr = ec_byte >> 4;
+
+ switch (tech.intval) {
+ case POWER_SUPPLY_TECHNOLOGY_NiMH:
+ switch (mfr) {
+ case 1: /* Gold Peak */
+ val->intval = 3000000*.8;
+ break;
+ default:
+ return -EIO;
+ }
+ break;
+
+ case POWER_SUPPLY_TECHNOLOGY_LiFe:
+ switch (mfr) {
+ case 1: /* Gold Peak */
+ val->intval = 2800000;
+ break;
+ case 2: /* BYD */
+ val->intval = 3100000;
+ break;
+ default:
+ return -EIO;
+ }
+ break;
+
+ default:
+ return -EIO;
+ }
+
+ return ret;
+}
+
+static int olpc_bat_get_charge_now(union power_supply_propval *val)
+{
+ uint8_t soc;
+ union power_supply_propval full;
+ int ret;
+
+ ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &soc, 1);
+ if (ret)
+ return ret;
+
+ ret = olpc_bat_get_charge_full_design(&full);
+ if (ret)
+ return ret;
+
+ val->intval = soc * (full.intval / 100);
+ return 0;
+}
+
+/*********************************************************************
+ * Battery properties
+ *********************************************************************/
+static int olpc_bat_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ __be16 ec_word;
+ uint8_t ec_byte;
+ __be64 ser_buf;
+
+ ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &ec_byte, 1);
+ if (ret)
+ return ret;
+
+ /* Theoretically there's a race here -- the battery could be
+ removed immediately after we check whether it's present, and
+ then we query for some other property of the now-absent battery.
+ It doesn't matter though -- the EC will return the last-known
+ information, and it's as if we just ran that _little_ bit faster
+ and managed to read it out before the battery went away. */
+ if (!(ec_byte & (BAT_STAT_PRESENT | BAT_STAT_TRICKLE)) &&
+ psp != POWER_SUPPLY_PROP_PRESENT)
+ return -ENODEV;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = olpc_bat_get_status(val, ec_byte);
+ if (ret)
+ return ret;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ if (ec_byte & BAT_STAT_TRICKLE)
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ else if (ec_byte & BAT_STAT_CHARGING)
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ else
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = !!(ec_byte & (BAT_STAT_PRESENT |
+ BAT_STAT_TRICKLE));
+ break;
+
+ case POWER_SUPPLY_PROP_HEALTH:
+ if (ec_byte & BAT_STAT_DESTROY)
+ val->intval = POWER_SUPPLY_HEALTH_DEAD;
+ else {
+ ret = olpc_bat_get_health(val);
+ if (ret)
+ return ret;
+ }
+ break;
+
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ ret = olpc_bat_get_mfr(val);
+ if (ret)
+ return ret;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ ret = olpc_bat_get_tech(val);
+ if (ret)
+ return ret;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = olpc_ec_cmd(EC_BAT_VOLTAGE, NULL, 0, (void *)&ec_word, 2);
+ if (ret)
+ return ret;
+
+ val->intval = (s16)be16_to_cpu(ec_word) * 9760L / 32;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = olpc_ec_cmd(EC_BAT_CURRENT, NULL, 0, (void *)&ec_word, 2);
+ if (ret)
+ return ret;
+
+ val->intval = (s16)be16_to_cpu(ec_word) * 15625L / 120;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &ec_byte, 1);
+ if (ret)
+ return ret;
+ val->intval = ec_byte;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+ if (ec_byte & BAT_STAT_FULL)
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+ else if (ec_byte & BAT_STAT_LOW)
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+ else
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ ret = olpc_bat_get_charge_full_design(val);
+ if (ret)
+ return ret;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ ret = olpc_bat_get_charge_now(val);
+ if (ret)
+ return ret;
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2);
+ if (ret)
+ return ret;
+
+ val->intval = (s16)be16_to_cpu(ec_word) * 100 / 256;
+ break;
+ case POWER_SUPPLY_PROP_TEMP_AMBIENT:
+ ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2);
+ if (ret)
+ return ret;
+
+ val->intval = (int)be16_to_cpu(ec_word) * 100 / 256;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_COUNTER:
+ ret = olpc_ec_cmd(EC_BAT_ACR, NULL, 0, (void *)&ec_word, 2);
+ if (ret)
+ return ret;
+
+ val->intval = (s16)be16_to_cpu(ec_word) * 6250 / 15;
+ break;
+ case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+ ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8);
+ if (ret)
+ return ret;
+
+ sprintf(bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf));
+ val->strval = bat_serial;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property olpc_xo1_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TEMP_AMBIENT,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
+ POWER_SUPPLY_PROP_CHARGE_COUNTER,
+};
+
+/* XO-1.5 does not have ambient temperature property */
+static enum power_supply_property olpc_xo15_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
+ POWER_SUPPLY_PROP_CHARGE_COUNTER,
+};
+
+/* EEPROM reading goes completely around the power_supply API, sadly */
+
+#define EEPROM_START 0x20
+#define EEPROM_END 0x80
+#define EEPROM_SIZE (EEPROM_END - EEPROM_START)
+
+static ssize_t olpc_bat_eeprom_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr, char *buf, loff_t off, size_t count)
+{
+ uint8_t ec_byte;
+ int ret;
+ int i;
+
+ if (off >= EEPROM_SIZE)
+ return 0;
+ if (off + count > EEPROM_SIZE)
+ count = EEPROM_SIZE - off;
+
+ for (i = 0; i < count; i++) {
+ ec_byte = EEPROM_START + off + i;
+ ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &buf[i], 1);
+ if (ret) {
+ pr_err("olpc-battery: "
+ "EC_BAT_EEPROM cmd @ 0x%x failed - %d!\n",
+ ec_byte, ret);
+ return -EIO;
+ }
+ }
+
+ return count;
+}
+
+static struct bin_attribute olpc_bat_eeprom = {
+ .attr = {
+ .name = "eeprom",
+ .mode = S_IRUGO,
+ },
+ .size = 0,
+ .read = olpc_bat_eeprom_read,
+};
+
+/* Allow userspace to see the specific error value pulled from the EC */
+
+static ssize_t olpc_bat_error_read(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ uint8_t ec_byte;
+ ssize_t ret;
+
+ ret = olpc_ec_cmd(EC_BAT_ERRCODE, NULL, 0, &ec_byte, 1);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", ec_byte);
+}
+
+static struct device_attribute olpc_bat_error = {
+ .attr = {
+ .name = "error",
+ .mode = S_IRUGO,
+ },
+ .show = olpc_bat_error_read,
+};
+
+/*********************************************************************
+ * Initialisation
+ *********************************************************************/
+
+static struct power_supply olpc_bat = {
+ .name = "olpc-battery",
+ .get_property = olpc_bat_get_property,
+ .use_for_apm = 1,
+};
+
+static int olpc_battery_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ if (device_may_wakeup(olpc_ac.dev))
+ olpc_ec_wakeup_set(EC_SCI_SRC_ACPWR);
+ else
+ olpc_ec_wakeup_clear(EC_SCI_SRC_ACPWR);
+
+ if (device_may_wakeup(olpc_bat.dev))
+ olpc_ec_wakeup_set(EC_SCI_SRC_BATTERY | EC_SCI_SRC_BATSOC
+ | EC_SCI_SRC_BATERR);
+ else
+ olpc_ec_wakeup_clear(EC_SCI_SRC_BATTERY | EC_SCI_SRC_BATSOC
+ | EC_SCI_SRC_BATERR);
+
+ return 0;
+}
+
+static int __devinit olpc_battery_probe(struct platform_device *pdev)
+{
+ int ret;
+ uint8_t status;
+
+ /*
+ * We've seen a number of EC protocol changes; this driver requires
+ * the latest EC protocol, supported by 0x44 and above.
+ */
+ if (olpc_platform_info.ecver < 0x44) {
+ printk(KERN_NOTICE "OLPC EC version 0x%02x too old for "
+ "battery driver.\n", olpc_platform_info.ecver);
+ return -ENXIO;
+ }
+
+ ret = olpc_ec_cmd(EC_BAT_STATUS, NULL, 0, &status, 1);
+ if (ret)
+ return ret;
+
+ /* Ignore the status. It doesn't actually matter */
+
+ ret = power_supply_register(&pdev->dev, &olpc_ac);
+ if (ret)
+ return ret;
+
+ if (olpc_board_at_least(olpc_board_pre(0xd0))) { /* XO-1.5 */
+ olpc_bat.properties = olpc_xo15_bat_props;
+ olpc_bat.num_properties = ARRAY_SIZE(olpc_xo15_bat_props);
+ } else { /* XO-1 */
+ olpc_bat.properties = olpc_xo1_bat_props;
+ olpc_bat.num_properties = ARRAY_SIZE(olpc_xo1_bat_props);
+ }
+
+ ret = power_supply_register(&pdev->dev, &olpc_bat);
+ if (ret)
+ goto battery_failed;
+
+ ret = device_create_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
+ if (ret)
+ goto eeprom_failed;
+
+ ret = device_create_file(olpc_bat.dev, &olpc_bat_error);
+ if (ret)
+ goto error_failed;
+
+ if (olpc_ec_wakeup_available()) {
+ device_set_wakeup_capable(olpc_ac.dev, true);
+ device_set_wakeup_capable(olpc_bat.dev, true);
+ }
+
+ return 0;
+
+error_failed:
+ device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
+eeprom_failed:
+ power_supply_unregister(&olpc_bat);
+battery_failed:
+ power_supply_unregister(&olpc_ac);
+ return ret;
+}
+
+static int __devexit olpc_battery_remove(struct platform_device *pdev)
+{
+ device_remove_file(olpc_bat.dev, &olpc_bat_error);
+ device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
+ power_supply_unregister(&olpc_bat);
+ power_supply_unregister(&olpc_ac);
+ return 0;
+}
+
+static const struct of_device_id olpc_battery_ids[] __devinitconst = {
+ { .compatible = "olpc,xo1-battery" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, olpc_battery_ids);
+
+static struct platform_driver olpc_battery_driver = {
+ .driver = {
+ .name = "olpc-battery",
+ .owner = THIS_MODULE,
+ .of_match_table = olpc_battery_ids,
+ },
+ .probe = olpc_battery_probe,
+ .remove = __devexit_p(olpc_battery_remove),
+ .suspend = olpc_battery_suspend,
+};
+
+module_platform_driver(olpc_battery_driver);
+
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Battery driver for One Laptop Per Child 'XO' machine");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/pcf50633-charger.c b/ap/os/linux/linux-3.4.x/drivers/power/pcf50633-charger.c
new file mode 100644
index 0000000..3d1e9ef
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/pcf50633-charger.c
@@ -0,0 +1,482 @@
+/* NXP PCF50633 Main Battery Charger Driver
+ *
+ * (C) 2006-2008 by Openmoko, Inc.
+ * Author: Balaji Rao <balajirrao@openmoko.org>
+ * All rights reserved.
+ *
+ * Broken down from monstrous PCF50633 driver mainly by
+ * Harald Welte, Andy Green and Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/sysfs.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+
+#include <linux/mfd/pcf50633/core.h>
+#include <linux/mfd/pcf50633/mbc.h>
+
+struct pcf50633_mbc {
+ struct pcf50633 *pcf;
+
+ int adapter_online;
+ int usb_online;
+
+ struct power_supply usb;
+ struct power_supply adapter;
+ struct power_supply ac;
+};
+
+int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
+{
+ struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
+ int ret = 0;
+ u8 bits;
+ int charging_start = 1;
+ u8 mbcs2, chgmod;
+ unsigned int mbcc5;
+
+ if (ma >= 1000) {
+ bits = PCF50633_MBCC7_USB_1000mA;
+ ma = 1000;
+ } else if (ma >= 500) {
+ bits = PCF50633_MBCC7_USB_500mA;
+ ma = 500;
+ } else if (ma >= 100) {
+ bits = PCF50633_MBCC7_USB_100mA;
+ ma = 100;
+ } else {
+ bits = PCF50633_MBCC7_USB_SUSPEND;
+ charging_start = 0;
+ ma = 0;
+ }
+
+ ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC7,
+ PCF50633_MBCC7_USB_MASK, bits);
+ if (ret)
+ dev_err(pcf->dev, "error setting usb curlim to %d mA\n", ma);
+ else
+ dev_info(pcf->dev, "usb curlim to %d mA\n", ma);
+
+ /*
+ * We limit the charging current to be the USB current limit.
+ * The reason is that on pcf50633, when it enters PMU Standby mode,
+ * which it does when the device goes "off", the USB current limit
+ * reverts to the variant default. In at least one common case, that
+ * default is 500mA. By setting the charging current to be the same
+ * as the USB limit we set here before PMU standby, we enforce it only
+ * using the correct amount of current even when the USB current limit
+ * gets reset to the wrong thing
+ */
+
+ if (mbc->pcf->pdata->charger_reference_current_ma) {
+ mbcc5 = (ma << 8) / mbc->pcf->pdata->charger_reference_current_ma;
+ if (mbcc5 > 255)
+ mbcc5 = 255;
+ pcf50633_reg_write(mbc->pcf, PCF50633_REG_MBCC5, mbcc5);
+ }
+
+ mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
+ chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
+
+ /* If chgmod == BATFULL, setting chgena has no effect.
+ * Datasheet says we need to set resume instead but when autoresume is
+ * used resume doesn't work. Clear and set chgena instead.
+ */
+ if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
+ pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
+ PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
+ else {
+ pcf50633_reg_clear_bits(pcf, PCF50633_REG_MBCC1,
+ PCF50633_MBCC1_CHGENA);
+ pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
+ PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
+ }
+
+ power_supply_changed(&mbc->usb);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(pcf50633_mbc_usb_curlim_set);
+
+int pcf50633_mbc_get_status(struct pcf50633 *pcf)
+{
+ struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
+ int status = 0;
+ u8 chgmod;
+
+ if (!mbc)
+ return 0;
+
+ chgmod = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2)
+ & PCF50633_MBCS2_MBC_MASK;
+
+ if (mbc->usb_online)
+ status |= PCF50633_MBC_USB_ONLINE;
+ if (chgmod == PCF50633_MBCS2_MBC_USB_PRE ||
+ chgmod == PCF50633_MBCS2_MBC_USB_PRE_WAIT ||
+ chgmod == PCF50633_MBCS2_MBC_USB_FAST ||
+ chgmod == PCF50633_MBCS2_MBC_USB_FAST_WAIT)
+ status |= PCF50633_MBC_USB_ACTIVE;
+ if (mbc->adapter_online)
+ status |= PCF50633_MBC_ADAPTER_ONLINE;
+ if (chgmod == PCF50633_MBCS2_MBC_ADP_PRE ||
+ chgmod == PCF50633_MBCS2_MBC_ADP_PRE_WAIT ||
+ chgmod == PCF50633_MBCS2_MBC_ADP_FAST ||
+ chgmod == PCF50633_MBCS2_MBC_ADP_FAST_WAIT)
+ status |= PCF50633_MBC_ADAPTER_ACTIVE;
+
+ return status;
+}
+EXPORT_SYMBOL_GPL(pcf50633_mbc_get_status);
+
+int pcf50633_mbc_get_usb_online_status(struct pcf50633 *pcf)
+{
+ struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
+
+ if (!mbc)
+ return 0;
+
+ return mbc->usb_online;
+}
+EXPORT_SYMBOL_GPL(pcf50633_mbc_get_usb_online_status);
+
+static ssize_t
+show_chgmode(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
+
+ u8 mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
+ u8 chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
+
+ return sprintf(buf, "%d\n", chgmod);
+}
+static DEVICE_ATTR(chgmode, S_IRUGO, show_chgmode, NULL);
+
+static ssize_t
+show_usblim(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
+ u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
+ PCF50633_MBCC7_USB_MASK;
+ unsigned int ma;
+
+ if (usblim == PCF50633_MBCC7_USB_1000mA)
+ ma = 1000;
+ else if (usblim == PCF50633_MBCC7_USB_500mA)
+ ma = 500;
+ else if (usblim == PCF50633_MBCC7_USB_100mA)
+ ma = 100;
+ else
+ ma = 0;
+
+ return sprintf(buf, "%u\n", ma);
+}
+
+static ssize_t set_usblim(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
+ unsigned long ma;
+ int ret;
+
+ ret = strict_strtoul(buf, 10, &ma);
+ if (ret)
+ return -EINVAL;
+
+ pcf50633_mbc_usb_curlim_set(mbc->pcf, ma);
+
+ return count;
+}
+
+static DEVICE_ATTR(usb_curlim, S_IRUGO | S_IWUSR, show_usblim, set_usblim);
+
+static ssize_t
+show_chglim(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
+ u8 mbcc5 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC5);
+ unsigned int ma;
+
+ if (!mbc->pcf->pdata->charger_reference_current_ma)
+ return -ENODEV;
+
+ ma = (mbc->pcf->pdata->charger_reference_current_ma * mbcc5) >> 8;
+
+ return sprintf(buf, "%u\n", ma);
+}
+
+static ssize_t set_chglim(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
+ unsigned long ma;
+ unsigned int mbcc5;
+ int ret;
+
+ if (!mbc->pcf->pdata->charger_reference_current_ma)
+ return -ENODEV;
+
+ ret = strict_strtoul(buf, 10, &ma);
+ if (ret)
+ return -EINVAL;
+
+ mbcc5 = (ma << 8) / mbc->pcf->pdata->charger_reference_current_ma;
+ if (mbcc5 > 255)
+ mbcc5 = 255;
+ pcf50633_reg_write(mbc->pcf, PCF50633_REG_MBCC5, mbcc5);
+
+ return count;
+}
+
+/*
+ * This attribute allows to change MBC charging limit on the fly
+ * independently of usb current limit. It also gets set automatically every
+ * time usb current limit is changed.
+ */
+static DEVICE_ATTR(chg_curlim, S_IRUGO | S_IWUSR, show_chglim, set_chglim);
+
+static struct attribute *pcf50633_mbc_sysfs_entries[] = {
+ &dev_attr_chgmode.attr,
+ &dev_attr_usb_curlim.attr,
+ &dev_attr_chg_curlim.attr,
+ NULL,
+};
+
+static struct attribute_group mbc_attr_group = {
+ .name = NULL, /* put in device directory */
+ .attrs = pcf50633_mbc_sysfs_entries,
+};
+
+static void
+pcf50633_mbc_irq_handler(int irq, void *data)
+{
+ struct pcf50633_mbc *mbc = data;
+
+ /* USB */
+ if (irq == PCF50633_IRQ_USBINS) {
+ mbc->usb_online = 1;
+ } else if (irq == PCF50633_IRQ_USBREM) {
+ mbc->usb_online = 0;
+ pcf50633_mbc_usb_curlim_set(mbc->pcf, 0);
+ }
+
+ /* Adapter */
+ if (irq == PCF50633_IRQ_ADPINS)
+ mbc->adapter_online = 1;
+ else if (irq == PCF50633_IRQ_ADPREM)
+ mbc->adapter_online = 0;
+
+ power_supply_changed(&mbc->ac);
+ power_supply_changed(&mbc->usb);
+ power_supply_changed(&mbc->adapter);
+
+ if (mbc->pcf->pdata->mbc_event_callback)
+ mbc->pcf->pdata->mbc_event_callback(mbc->pcf, irq);
+}
+
+static int adapter_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct pcf50633_mbc *mbc = container_of(psy,
+ struct pcf50633_mbc, adapter);
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = mbc->adapter_online;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int usb_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
+ int ret = 0;
+ u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
+ PCF50633_MBCC7_USB_MASK;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = mbc->usb_online &&
+ (usblim <= PCF50633_MBCC7_USB_500mA);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int ac_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, ac);
+ int ret = 0;
+ u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
+ PCF50633_MBCC7_USB_MASK;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = mbc->usb_online &&
+ (usblim == PCF50633_MBCC7_USB_1000mA);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static enum power_supply_property power_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static const u8 mbc_irq_handlers[] = {
+ PCF50633_IRQ_ADPINS,
+ PCF50633_IRQ_ADPREM,
+ PCF50633_IRQ_USBINS,
+ PCF50633_IRQ_USBREM,
+ PCF50633_IRQ_BATFULL,
+ PCF50633_IRQ_CHGHALT,
+ PCF50633_IRQ_THLIMON,
+ PCF50633_IRQ_THLIMOFF,
+ PCF50633_IRQ_USBLIMON,
+ PCF50633_IRQ_USBLIMOFF,
+ PCF50633_IRQ_LOWSYS,
+ PCF50633_IRQ_LOWBAT,
+};
+
+static int __devinit pcf50633_mbc_probe(struct platform_device *pdev)
+{
+ struct pcf50633_mbc *mbc;
+ int ret;
+ int i;
+ u8 mbcs1;
+
+ mbc = kzalloc(sizeof(*mbc), GFP_KERNEL);
+ if (!mbc)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, mbc);
+ mbc->pcf = dev_to_pcf50633(pdev->dev.parent);
+
+ /* Set up IRQ handlers */
+ for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
+ pcf50633_register_irq(mbc->pcf, mbc_irq_handlers[i],
+ pcf50633_mbc_irq_handler, mbc);
+
+ /* Create power supplies */
+ mbc->adapter.name = "adapter";
+ mbc->adapter.type = POWER_SUPPLY_TYPE_MAINS;
+ mbc->adapter.properties = power_props;
+ mbc->adapter.num_properties = ARRAY_SIZE(power_props);
+ mbc->adapter.get_property = &adapter_get_property;
+ mbc->adapter.supplied_to = mbc->pcf->pdata->batteries;
+ mbc->adapter.num_supplicants = mbc->pcf->pdata->num_batteries;
+
+ mbc->usb.name = "usb";
+ mbc->usb.type = POWER_SUPPLY_TYPE_USB;
+ mbc->usb.properties = power_props;
+ mbc->usb.num_properties = ARRAY_SIZE(power_props);
+ mbc->usb.get_property = usb_get_property;
+ mbc->usb.supplied_to = mbc->pcf->pdata->batteries;
+ mbc->usb.num_supplicants = mbc->pcf->pdata->num_batteries;
+
+ mbc->ac.name = "ac";
+ mbc->ac.type = POWER_SUPPLY_TYPE_MAINS;
+ mbc->ac.properties = power_props;
+ mbc->ac.num_properties = ARRAY_SIZE(power_props);
+ mbc->ac.get_property = ac_get_property;
+ mbc->ac.supplied_to = mbc->pcf->pdata->batteries;
+ mbc->ac.num_supplicants = mbc->pcf->pdata->num_batteries;
+
+ ret = power_supply_register(&pdev->dev, &mbc->adapter);
+ if (ret) {
+ dev_err(mbc->pcf->dev, "failed to register adapter\n");
+ kfree(mbc);
+ return ret;
+ }
+
+ ret = power_supply_register(&pdev->dev, &mbc->usb);
+ if (ret) {
+ dev_err(mbc->pcf->dev, "failed to register usb\n");
+ power_supply_unregister(&mbc->adapter);
+ kfree(mbc);
+ return ret;
+ }
+
+ ret = power_supply_register(&pdev->dev, &mbc->ac);
+ if (ret) {
+ dev_err(mbc->pcf->dev, "failed to register ac\n");
+ power_supply_unregister(&mbc->adapter);
+ power_supply_unregister(&mbc->usb);
+ kfree(mbc);
+ return ret;
+ }
+
+ ret = sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group);
+ if (ret)
+ dev_err(mbc->pcf->dev, "failed to create sysfs entries\n");
+
+ mbcs1 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS1);
+ if (mbcs1 & PCF50633_MBCS1_USBPRES)
+ pcf50633_mbc_irq_handler(PCF50633_IRQ_USBINS, mbc);
+ if (mbcs1 & PCF50633_MBCS1_ADAPTPRES)
+ pcf50633_mbc_irq_handler(PCF50633_IRQ_ADPINS, mbc);
+
+ return 0;
+}
+
+static int __devexit pcf50633_mbc_remove(struct platform_device *pdev)
+{
+ struct pcf50633_mbc *mbc = platform_get_drvdata(pdev);
+ int i;
+
+ /* Remove IRQ handlers */
+ for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
+ pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]);
+
+ sysfs_remove_group(&pdev->dev.kobj, &mbc_attr_group);
+ power_supply_unregister(&mbc->usb);
+ power_supply_unregister(&mbc->adapter);
+ power_supply_unregister(&mbc->ac);
+
+ kfree(mbc);
+
+ return 0;
+}
+
+static struct platform_driver pcf50633_mbc_driver = {
+ .driver = {
+ .name = "pcf50633-mbc",
+ },
+ .probe = pcf50633_mbc_probe,
+ .remove = __devexit_p(pcf50633_mbc_remove),
+};
+
+module_platform_driver(pcf50633_mbc_driver);
+
+MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
+MODULE_DESCRIPTION("PCF50633 mbc driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pcf50633-mbc");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/pda_power.c b/ap/os/linux/linux-3.4.x/drivers/power/pda_power.c
new file mode 100644
index 0000000..214468f
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/pda_power.c
@@ -0,0 +1,515 @@
+/*
+ * Common power driver for PDAs and phones with one or two external
+ * power supplies (AC/USB) connected to main and backup batteries,
+ * and optional builtin charger.
+ *
+ * Copyright © 2007 Anton Vorontsov <cbou@mail.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/notifier.h>
+#include <linux/power_supply.h>
+#include <linux/pda_power.h>
+#include <linux/regulator/consumer.h>
+#include <linux/timer.h>
+#include <linux/jiffies.h>
+#include <linux/usb/otg.h>
+
+static inline unsigned int get_irq_flags(struct resource *res)
+{
+ unsigned int flags = IRQF_SAMPLE_RANDOM | IRQF_SHARED;
+
+ flags |= res->flags & IRQF_TRIGGER_MASK;
+
+ return flags;
+}
+
+static struct device *dev;
+static struct pda_power_pdata *pdata;
+static struct resource *ac_irq, *usb_irq;
+static struct timer_list charger_timer;
+static struct timer_list supply_timer;
+static struct timer_list polling_timer;
+static int polling;
+
+#ifdef CONFIG_USB_OTG_UTILS
+static struct usb_phy *transceiver;
+static struct notifier_block otg_nb;
+#endif
+
+static struct regulator *ac_draw;
+
+enum {
+ PDA_PSY_OFFLINE = 0,
+ PDA_PSY_ONLINE = 1,
+ PDA_PSY_TO_CHANGE,
+};
+static int new_ac_status = -1;
+static int new_usb_status = -1;
+static int ac_status = -1;
+static int usb_status = -1;
+
+static int pda_power_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ if (psy->type == POWER_SUPPLY_TYPE_MAINS)
+ val->intval = pdata->is_ac_online ?
+ pdata->is_ac_online() : 0;
+ else
+ val->intval = pdata->is_usb_online ?
+ pdata->is_usb_online() : 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static enum power_supply_property pda_power_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static char *pda_power_supplied_to[] = {
+ "main-battery",
+ "backup-battery",
+};
+
+static struct power_supply pda_psy_ac = {
+ .name = "ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .supplied_to = pda_power_supplied_to,
+ .num_supplicants = ARRAY_SIZE(pda_power_supplied_to),
+ .properties = pda_power_props,
+ .num_properties = ARRAY_SIZE(pda_power_props),
+ .get_property = pda_power_get_property,
+};
+
+static struct power_supply pda_psy_usb = {
+ .name = "usb",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .supplied_to = pda_power_supplied_to,
+ .num_supplicants = ARRAY_SIZE(pda_power_supplied_to),
+ .properties = pda_power_props,
+ .num_properties = ARRAY_SIZE(pda_power_props),
+ .get_property = pda_power_get_property,
+};
+
+static void update_status(void)
+{
+ if (pdata->is_ac_online)
+ new_ac_status = !!pdata->is_ac_online();
+
+ if (pdata->is_usb_online)
+ new_usb_status = !!pdata->is_usb_online();
+}
+
+static void update_charger(void)
+{
+ static int regulator_enabled;
+ int max_uA = pdata->ac_max_uA;
+
+ if (pdata->set_charge) {
+ if (new_ac_status > 0) {
+ dev_dbg(dev, "charger on (AC)\n");
+ pdata->set_charge(PDA_POWER_CHARGE_AC);
+ } else if (new_usb_status > 0) {
+ dev_dbg(dev, "charger on (USB)\n");
+ pdata->set_charge(PDA_POWER_CHARGE_USB);
+ } else {
+ dev_dbg(dev, "charger off\n");
+ pdata->set_charge(0);
+ }
+ } else if (ac_draw) {
+ if (new_ac_status > 0) {
+ regulator_set_current_limit(ac_draw, max_uA, max_uA);
+ if (!regulator_enabled) {
+ dev_dbg(dev, "charger on (AC)\n");
+ regulator_enable(ac_draw);
+ regulator_enabled = 1;
+ }
+ } else {
+ if (regulator_enabled) {
+ dev_dbg(dev, "charger off\n");
+ regulator_disable(ac_draw);
+ regulator_enabled = 0;
+ }
+ }
+ }
+}
+
+static void supply_timer_func(unsigned long unused)
+{
+ if (ac_status == PDA_PSY_TO_CHANGE) {
+ ac_status = new_ac_status;
+ power_supply_changed(&pda_psy_ac);
+ }
+
+ if (usb_status == PDA_PSY_TO_CHANGE) {
+ usb_status = new_usb_status;
+ power_supply_changed(&pda_psy_usb);
+ }
+}
+
+static void psy_changed(void)
+{
+ update_charger();
+
+ /*
+ * Okay, charger set. Now wait a bit before notifying supplicants,
+ * charge power should stabilize.
+ */
+ mod_timer(&supply_timer,
+ jiffies + msecs_to_jiffies(pdata->wait_for_charger));
+}
+
+static void charger_timer_func(unsigned long unused)
+{
+ update_status();
+ psy_changed();
+}
+
+static irqreturn_t power_changed_isr(int irq, void *power_supply)
+{
+ if (power_supply == &pda_psy_ac)
+ ac_status = PDA_PSY_TO_CHANGE;
+ else if (power_supply == &pda_psy_usb)
+ usb_status = PDA_PSY_TO_CHANGE;
+ else
+ return IRQ_NONE;
+
+ /*
+ * Wait a bit before reading ac/usb line status and setting charger,
+ * because ac/usb status readings may lag from irq.
+ */
+ mod_timer(&charger_timer,
+ jiffies + msecs_to_jiffies(pdata->wait_for_status));
+
+ return IRQ_HANDLED;
+}
+
+static void polling_timer_func(unsigned long unused)
+{
+ int changed = 0;
+
+ dev_dbg(dev, "polling...\n");
+
+ update_status();
+
+ if (!ac_irq && new_ac_status != ac_status) {
+ ac_status = PDA_PSY_TO_CHANGE;
+ changed = 1;
+ }
+
+ if (!usb_irq && new_usb_status != usb_status) {
+ usb_status = PDA_PSY_TO_CHANGE;
+ changed = 1;
+ }
+
+ if (changed)
+ psy_changed();
+
+ mod_timer(&polling_timer,
+ jiffies + msecs_to_jiffies(pdata->polling_interval));
+}
+
+#ifdef CONFIG_USB_OTG_UTILS
+static int otg_is_usb_online(void)
+{
+ return (transceiver->last_event == USB_EVENT_VBUS ||
+ transceiver->last_event == USB_EVENT_ENUMERATED);
+}
+
+static int otg_is_ac_online(void)
+{
+ return (transceiver->last_event == USB_EVENT_CHARGER);
+}
+
+static int otg_handle_notification(struct notifier_block *nb,
+ unsigned long event, void *unused)
+{
+ switch (event) {
+ case USB_EVENT_CHARGER:
+ ac_status = PDA_PSY_TO_CHANGE;
+ break;
+ case USB_EVENT_VBUS:
+ case USB_EVENT_ENUMERATED:
+ usb_status = PDA_PSY_TO_CHANGE;
+ break;
+ case USB_EVENT_NONE:
+ ac_status = PDA_PSY_TO_CHANGE;
+ usb_status = PDA_PSY_TO_CHANGE;
+ break;
+ default:
+ return NOTIFY_OK;
+ }
+
+ /*
+ * Wait a bit before reading ac/usb line status and setting charger,
+ * because ac/usb status readings may lag from irq.
+ */
+ mod_timer(&charger_timer,
+ jiffies + msecs_to_jiffies(pdata->wait_for_status));
+
+ return NOTIFY_OK;
+}
+#endif
+
+static int pda_power_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ dev = &pdev->dev;
+
+ if (pdev->id != -1) {
+ dev_err(dev, "it's meaningless to register several "
+ "pda_powers; use id = -1\n");
+ ret = -EINVAL;
+ goto wrongid;
+ }
+
+ pdata = pdev->dev.platform_data;
+
+ if (pdata->init) {
+ ret = pdata->init(dev);
+ if (ret < 0)
+ goto init_failed;
+ }
+
+ update_status();
+ update_charger();
+
+ if (!pdata->wait_for_status)
+ pdata->wait_for_status = 500;
+
+ if (!pdata->wait_for_charger)
+ pdata->wait_for_charger = 500;
+
+ if (!pdata->polling_interval)
+ pdata->polling_interval = 2000;
+
+ if (!pdata->ac_max_uA)
+ pdata->ac_max_uA = 500000;
+
+ setup_timer(&charger_timer, charger_timer_func, 0);
+ setup_timer(&supply_timer, supply_timer_func, 0);
+
+ ac_irq = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ac");
+ usb_irq = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "usb");
+
+ if (pdata->supplied_to) {
+ pda_psy_ac.supplied_to = pdata->supplied_to;
+ pda_psy_ac.num_supplicants = pdata->num_supplicants;
+ pda_psy_usb.supplied_to = pdata->supplied_to;
+ pda_psy_usb.num_supplicants = pdata->num_supplicants;
+ }
+
+ ac_draw = regulator_get(dev, "ac_draw");
+ if (IS_ERR(ac_draw)) {
+ dev_dbg(dev, "couldn't get ac_draw regulator\n");
+ ac_draw = NULL;
+ ret = PTR_ERR(ac_draw);
+ }
+
+#ifdef CONFIG_USB_OTG_UTILS
+ transceiver = usb_get_transceiver();
+ if (transceiver && !pdata->is_usb_online) {
+ pdata->is_usb_online = otg_is_usb_online;
+ }
+ if (transceiver && !pdata->is_ac_online) {
+ pdata->is_ac_online = otg_is_ac_online;
+ }
+#endif
+
+ if (pdata->is_ac_online) {
+ ret = power_supply_register(&pdev->dev, &pda_psy_ac);
+ if (ret) {
+ dev_err(dev, "failed to register %s power supply\n",
+ pda_psy_ac.name);
+ goto ac_supply_failed;
+ }
+
+ if (ac_irq) {
+ ret = request_irq(ac_irq->start, power_changed_isr,
+ get_irq_flags(ac_irq), ac_irq->name,
+ &pda_psy_ac);
+ if (ret) {
+ dev_err(dev, "request ac irq failed\n");
+ goto ac_irq_failed;
+ }
+ } else {
+ polling = 1;
+ }
+ }
+
+ if (pdata->is_usb_online) {
+ ret = power_supply_register(&pdev->dev, &pda_psy_usb);
+ if (ret) {
+ dev_err(dev, "failed to register %s power supply\n",
+ pda_psy_usb.name);
+ goto usb_supply_failed;
+ }
+
+ if (usb_irq) {
+ ret = request_irq(usb_irq->start, power_changed_isr,
+ get_irq_flags(usb_irq),
+ usb_irq->name, &pda_psy_usb);
+ if (ret) {
+ dev_err(dev, "request usb irq failed\n");
+ goto usb_irq_failed;
+ }
+ } else {
+ polling = 1;
+ }
+ }
+
+#ifdef CONFIG_USB_OTG_UTILS
+ if (transceiver && pdata->use_otg_notifier) {
+ otg_nb.notifier_call = otg_handle_notification;
+ ret = usb_register_notifier(transceiver, &otg_nb);
+ if (ret) {
+ dev_err(dev, "failure to register otg notifier\n");
+ goto otg_reg_notifier_failed;
+ }
+ polling = 0;
+ }
+#endif
+
+ if (polling) {
+ dev_dbg(dev, "will poll for status\n");
+ setup_timer(&polling_timer, polling_timer_func, 0);
+ mod_timer(&polling_timer,
+ jiffies + msecs_to_jiffies(pdata->polling_interval));
+ }
+
+ if (ac_irq || usb_irq)
+ device_init_wakeup(&pdev->dev, 1);
+
+ return 0;
+
+#ifdef CONFIG_USB_OTG_UTILS
+otg_reg_notifier_failed:
+ if (pdata->is_usb_online && usb_irq)
+ free_irq(usb_irq->start, &pda_psy_usb);
+#endif
+usb_irq_failed:
+ if (pdata->is_usb_online)
+ power_supply_unregister(&pda_psy_usb);
+usb_supply_failed:
+ if (pdata->is_ac_online && ac_irq)
+ free_irq(ac_irq->start, &pda_psy_ac);
+#ifdef CONFIG_USB_OTG_UTILS
+ if (transceiver)
+ usb_put_transceiver(transceiver);
+#endif
+ac_irq_failed:
+ if (pdata->is_ac_online)
+ power_supply_unregister(&pda_psy_ac);
+ac_supply_failed:
+ if (ac_draw) {
+ regulator_put(ac_draw);
+ ac_draw = NULL;
+ }
+ if (pdata->exit)
+ pdata->exit(dev);
+init_failed:
+wrongid:
+ return ret;
+}
+
+static int pda_power_remove(struct platform_device *pdev)
+{
+ if (pdata->is_usb_online && usb_irq)
+ free_irq(usb_irq->start, &pda_psy_usb);
+ if (pdata->is_ac_online && ac_irq)
+ free_irq(ac_irq->start, &pda_psy_ac);
+
+ if (polling)
+ del_timer_sync(&polling_timer);
+ del_timer_sync(&charger_timer);
+ del_timer_sync(&supply_timer);
+
+ if (pdata->is_usb_online)
+ power_supply_unregister(&pda_psy_usb);
+ if (pdata->is_ac_online)
+ power_supply_unregister(&pda_psy_ac);
+#ifdef CONFIG_USB_OTG_UTILS
+ if (transceiver)
+ usb_put_transceiver(transceiver);
+#endif
+ if (ac_draw) {
+ regulator_put(ac_draw);
+ ac_draw = NULL;
+ }
+ if (pdata->exit)
+ pdata->exit(dev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int ac_wakeup_enabled;
+static int usb_wakeup_enabled;
+
+static int pda_power_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ if (pdata->suspend) {
+ int ret = pdata->suspend(state);
+
+ if (ret)
+ return ret;
+ }
+
+ if (device_may_wakeup(&pdev->dev)) {
+ if (ac_irq)
+ ac_wakeup_enabled = !enable_irq_wake(ac_irq->start);
+ if (usb_irq)
+ usb_wakeup_enabled = !enable_irq_wake(usb_irq->start);
+ }
+
+ return 0;
+}
+
+static int pda_power_resume(struct platform_device *pdev)
+{
+ if (device_may_wakeup(&pdev->dev)) {
+ if (usb_irq && usb_wakeup_enabled)
+ disable_irq_wake(usb_irq->start);
+ if (ac_irq && ac_wakeup_enabled)
+ disable_irq_wake(ac_irq->start);
+ }
+
+ if (pdata->resume)
+ return pdata->resume();
+
+ return 0;
+}
+#else
+#define pda_power_suspend NULL
+#define pda_power_resume NULL
+#endif /* CONFIG_PM */
+
+static struct platform_driver pda_power_pdrv = {
+ .driver = {
+ .name = "pda-power",
+ },
+ .probe = pda_power_probe,
+ .remove = pda_power_remove,
+ .suspend = pda_power_suspend,
+ .resume = pda_power_resume,
+};
+
+module_platform_driver(pda_power_pdrv);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Anton Vorontsov <cbou@mail.ru>");
+MODULE_ALIAS("platform:pda-power");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/pmu_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/pmu_battery.c
new file mode 100644
index 0000000..023d249
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/pmu_battery.c
@@ -0,0 +1,216 @@
+/*
+ * Battery class driver for Apple PMU
+ *
+ * Copyright © 2006 David Woodhouse <dwmw2@infradead.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/power_supply.h>
+#include <linux/adb.h>
+#include <linux/pmu.h>
+#include <linux/slab.h>
+
+static struct pmu_battery_dev {
+ struct power_supply bat;
+ struct pmu_battery_info *pbi;
+ char name[16];
+ int propval;
+} *pbats[PMU_MAX_BATTERIES];
+
+#define to_pmu_battery_dev(x) container_of(x, struct pmu_battery_dev, bat)
+
+/*********************************************************************
+ * Power
+ *********************************************************************/
+
+static int pmu_get_ac_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = (!!(pmu_power_flags & PMU_PWR_AC_PRESENT)) ||
+ (pmu_battery_count == 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property pmu_ac_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static struct power_supply pmu_ac = {
+ .name = "pmu-ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .properties = pmu_ac_props,
+ .num_properties = ARRAY_SIZE(pmu_ac_props),
+ .get_property = pmu_get_ac_prop,
+};
+
+/*********************************************************************
+ * Battery properties
+ *********************************************************************/
+
+static char *pmu_batt_types[] = {
+ "Smart", "Comet", "Hooper", "Unknown"
+};
+
+static char *pmu_bat_get_model_name(struct pmu_battery_info *pbi)
+{
+ switch (pbi->flags & PMU_BATT_TYPE_MASK) {
+ case PMU_BATT_TYPE_SMART:
+ return pmu_batt_types[0];
+ case PMU_BATT_TYPE_COMET:
+ return pmu_batt_types[1];
+ case PMU_BATT_TYPE_HOOPER:
+ return pmu_batt_types[2];
+ default: break;
+ }
+ return pmu_batt_types[3];
+}
+
+static int pmu_bat_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct pmu_battery_dev *pbat = to_pmu_battery_dev(psy);
+ struct pmu_battery_info *pbi = pbat->pbi;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (pbi->flags & PMU_BATT_CHARGING)
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else if (pmu_power_flags & PMU_PWR_AC_PRESENT)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ else
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = !!(pbi->flags & PMU_BATT_PRESENT);
+ break;
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = pmu_bat_get_model_name(pbi);
+ break;
+ case POWER_SUPPLY_PROP_ENERGY_AVG:
+ val->intval = pbi->charge * 1000; /* mWh -> µWh */
+ break;
+ case POWER_SUPPLY_PROP_ENERGY_FULL:
+ val->intval = pbi->max_charge * 1000; /* mWh -> µWh */
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ val->intval = pbi->amperage * 1000; /* mA -> µA */
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ val->intval = pbi->voltage * 1000; /* mV -> µV */
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+ val->intval = pbi->time_remaining;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property pmu_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_ENERGY_AVG,
+ POWER_SUPPLY_PROP_ENERGY_FULL,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
+};
+
+/*********************************************************************
+ * Initialisation
+ *********************************************************************/
+
+static struct platform_device *bat_pdev;
+
+static int __init pmu_bat_init(void)
+{
+ int ret;
+ int i;
+
+ bat_pdev = platform_device_register_simple("pmu-battery",
+ 0, NULL, 0);
+ if (IS_ERR(bat_pdev)) {
+ ret = PTR_ERR(bat_pdev);
+ goto pdev_register_failed;
+ }
+
+ ret = power_supply_register(&bat_pdev->dev, &pmu_ac);
+ if (ret)
+ goto ac_register_failed;
+
+ for (i = 0; i < pmu_battery_count; i++) {
+ struct pmu_battery_dev *pbat = kzalloc(sizeof(*pbat),
+ GFP_KERNEL);
+ if (!pbat)
+ break;
+
+ sprintf(pbat->name, "PMU_battery_%d", i);
+ pbat->bat.name = pbat->name;
+ pbat->bat.properties = pmu_bat_props;
+ pbat->bat.num_properties = ARRAY_SIZE(pmu_bat_props);
+ pbat->bat.get_property = pmu_bat_get_property;
+ pbat->pbi = &pmu_batteries[i];
+
+ ret = power_supply_register(&bat_pdev->dev, &pbat->bat);
+ if (ret) {
+ kfree(pbat);
+ goto battery_register_failed;
+ }
+ pbats[i] = pbat;
+ }
+
+ goto success;
+
+battery_register_failed:
+ while (i--) {
+ if (!pbats[i])
+ continue;
+ power_supply_unregister(&pbats[i]->bat);
+ kfree(pbats[i]);
+ }
+ power_supply_unregister(&pmu_ac);
+ac_register_failed:
+ platform_device_unregister(bat_pdev);
+pdev_register_failed:
+success:
+ return ret;
+}
+
+static void __exit pmu_bat_exit(void)
+{
+ int i;
+
+ for (i = 0; i < PMU_MAX_BATTERIES; i++) {
+ if (!pbats[i])
+ continue;
+ power_supply_unregister(&pbats[i]->bat);
+ kfree(pbats[i]);
+ }
+ power_supply_unregister(&pmu_ac);
+ platform_device_unregister(bat_pdev);
+}
+
+module_init(pmu_bat_init);
+module_exit(pmu_bat_exit);
+
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("PMU battery driver");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/power_supply.h b/ap/os/linux/linux-3.4.x/drivers/power/power_supply.h
new file mode 100644
index 0000000..2f0dbdb
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/power_supply.h
@@ -0,0 +1,48 @@
+/*
+ * Functions private to power supply class
+ *
+ * Copyright © 2007 Anton Vorontsov <cbou@mail.ru>
+ * Copyright © 2004 Szabolcs Gyurko
+ * Copyright © 2003 Ian Molton <spyro@f2s.com>
+ *
+ * Modified: 2004, Oct Szabolcs Gyurko
+ *
+ * You may use this code as per GPL version 2
+ */
+
+struct device;
+struct device_type;
+struct power_supply;
+
+#ifdef CONFIG_SYSFS
+
+extern void power_supply_init_attrs(struct device_type *dev_type);
+extern int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env);
+
+#else
+
+static inline void power_supply_init_attrs(struct device_type *dev_type) {}
+#define power_supply_uevent NULL
+
+#endif /* CONFIG_SYSFS */
+
+#ifdef CONFIG_LEDS_TRIGGERS
+/*
+extern void power_supply_update_leds(struct power_supply *psy);
+extern int power_supply_create_triggers(struct power_supply *psy);
+extern void power_supply_remove_triggers(struct power_supply *psy);
+*/
+
+static inline void power_supply_update_leds(struct power_supply *psy) {}
+static inline int power_supply_create_triggers(struct power_supply *psy)
+{ return 0; }
+static inline void power_supply_remove_triggers(struct power_supply *psy) {}
+
+#else
+
+static inline void power_supply_update_leds(struct power_supply *psy) {}
+static inline int power_supply_create_triggers(struct power_supply *psy)
+{ return 0; }
+static inline void power_supply_remove_triggers(struct power_supply *psy) {}
+
+#endif /* CONFIG_LEDS_TRIGGERS */
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/power_supply_core.c b/ap/os/linux/linux-3.4.x/drivers/power/power_supply_core.c
new file mode 100644
index 0000000..4152a1d
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/power_supply_core.c
@@ -0,0 +1,290 @@
+/*
+ * Universal power supply monitor class
+ *
+ * Copyright © 2007 Anton Vorontsov <cbou@mail.ru>
+ * Copyright © 2004 Szabolcs Gyurko
+ * Copyright © 2003 Ian Molton <spyro@f2s.com>
+ *
+ * Modified: 2004, Oct Szabolcs Gyurko
+ *
+ * You may use this code as per GPL version 2
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/power_supply.h>
+#include "power_supply.h"
+
+/* exported for the APM Power driver, APM emulation */
+struct class *power_supply_class;
+EXPORT_SYMBOL_GPL(power_supply_class);
+
+static struct device_type power_supply_dev_type;
+
+static int __power_supply_changed_work(struct device *dev, void *data)
+{
+ struct power_supply *psy = (struct power_supply *)data;
+ struct power_supply *pst = dev_get_drvdata(dev);
+ int i;
+
+ if(NULL==pst)
+ return 0;
+
+ for (i = 0; i < psy->num_supplicants; i++){
+ if(psy->supplied_to[i]==NULL)
+ continue;
+ if (!strcmp(psy->supplied_to[i], pst->name)) {
+ if (pst->external_power_changed)
+ pst->external_power_changed(pst);
+ }
+ }
+ return 0;
+}
+
+static void power_supply_changed_work(struct work_struct *work)
+{
+ unsigned long flags;
+ struct power_supply *psy = container_of(work, struct power_supply,
+ changed_work);
+
+ dev_dbg(psy->dev, "%s\n", __func__);
+
+ spin_lock_irqsave(&psy->changed_lock, flags);
+ if (psy->changed) {
+ psy->changed = false;
+ spin_unlock_irqrestore(&psy->changed_lock, flags);
+
+ class_for_each_device(power_supply_class, NULL, psy,
+ __power_supply_changed_work);
+
+ power_supply_update_leds(psy);
+
+ kobject_uevent(&psy->dev->kobj, KOBJ_CHANGE);
+ spin_lock_irqsave(&psy->changed_lock, flags);
+ }
+ if (!psy->changed)
+ pm_relax(psy->dev);
+ spin_unlock_irqrestore(&psy->changed_lock, flags);
+}
+
+void power_supply_changed(struct power_supply *psy)
+{
+ unsigned long flags;
+
+ dev_dbg(psy->dev, "%s\n", __func__);
+
+ spin_lock_irqsave(&psy->changed_lock, flags);
+ psy->changed = true;
+ pm_stay_awake(psy->dev);
+ spin_unlock_irqrestore(&psy->changed_lock, flags);
+ schedule_work(&psy->changed_work);
+}
+EXPORT_SYMBOL_GPL(power_supply_changed);
+
+static int __power_supply_am_i_supplied(struct device *dev, void *data)
+{
+ union power_supply_propval ret = {0,};
+ struct power_supply *psy = (struct power_supply *)data;
+ struct power_supply *epsy = dev_get_drvdata(dev);
+ int i;
+
+ if(NULL==epsy)
+ return 0;
+ for (i = 0; i < epsy->num_supplicants; i++) {
+ if(epsy->supplied_to[i]==NULL)
+ continue;
+ if (!strcmp(epsy->supplied_to[i], psy->name)) {
+ if (epsy->get_property(epsy,
+ POWER_SUPPLY_PROP_ONLINE, &ret))
+ continue;
+ if (ret.intval)
+ return ret.intval;
+ }
+ }
+ return 0;
+}
+
+int power_supply_am_i_supplied(struct power_supply *psy)
+{
+ int error;
+
+ error = class_for_each_device(power_supply_class, NULL, psy,
+ __power_supply_am_i_supplied);
+
+ dev_dbg(psy->dev, "%s %d\n", __func__, error);
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(power_supply_am_i_supplied);
+
+static int __power_supply_is_system_supplied(struct device *dev, void *data)
+{
+ union power_supply_propval ret = {0,};
+ struct power_supply *psy = dev_get_drvdata(dev);
+ unsigned int *count = data;
+
+ (*count)++;
+ if(NULL==psy)
+ return 0;
+ if (psy->type != POWER_SUPPLY_TYPE_BATTERY) {
+ if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &ret))
+ return 0;
+ if (ret.intval)
+ return ret.intval;
+ }
+ return 0;
+}
+
+int power_supply_is_system_supplied(void)
+{
+ int error;
+ unsigned int count = 0;
+
+ error = class_for_each_device(power_supply_class, NULL, &count,
+ __power_supply_is_system_supplied);
+
+ /*
+ * If no power class device was found at all, most probably we are
+ * running on a desktop system, so assume we are on mains power.
+ */
+ if (count == 0)
+ return 1;
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(power_supply_is_system_supplied);
+
+int power_supply_set_battery_charged(struct power_supply *psy)
+{
+ if (psy->type == POWER_SUPPLY_TYPE_BATTERY && psy->set_charged) {
+ psy->set_charged(psy);
+ return 0;
+ }
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(power_supply_set_battery_charged);
+
+static int power_supply_match_device_by_name(struct device *dev, void *data)
+{
+ const char *name = data;
+ struct power_supply *psy = dev_get_drvdata(dev);
+
+ if((NULL==psy)||(NULL==psy->name)||(NULL==name))
+ return 0;
+
+ return strcmp(psy->name, name) == 0;
+}
+
+struct power_supply *power_supply_get_by_name(char *name)
+{
+ struct device *dev = class_find_device(power_supply_class, NULL, name,
+ power_supply_match_device_by_name);
+
+ return dev ? dev_get_drvdata(dev) : NULL;
+}
+EXPORT_SYMBOL_GPL(power_supply_get_by_name);
+
+int power_supply_powers(struct power_supply *psy, struct device *dev)
+{
+ return sysfs_create_link(&psy->dev->kobj, &dev->kobj, "powers");
+}
+EXPORT_SYMBOL_GPL(power_supply_powers);
+
+static void power_supply_dev_release(struct device *dev)
+{
+ pr_debug("device: '%s': %s\n", dev_name(dev), __func__);
+ kfree(dev);
+}
+
+int power_supply_register(struct device *parent, struct power_supply *psy)
+{
+ struct device *dev;
+ int rc;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ device_initialize(dev);
+
+ dev->class = power_supply_class;
+ dev->type = &power_supply_dev_type;
+ dev->parent = parent;
+ dev->release = power_supply_dev_release;
+ dev_set_drvdata(dev, psy);
+ psy->dev = dev;
+
+ INIT_WORK(&psy->changed_work, power_supply_changed_work);
+
+ rc = kobject_set_name(&dev->kobj, "%s", psy->name);
+ if (rc)
+ goto kobject_set_name_failed;
+
+ rc = device_add(dev);
+ if (rc)
+ goto device_add_failed;
+
+ spin_lock_init(&psy->changed_lock);
+ rc = device_init_wakeup(dev, true);
+ if (rc)
+ goto wakeup_init_failed;
+
+ rc = power_supply_create_triggers(psy);
+ if (rc)
+ goto create_triggers_failed;
+
+ power_supply_changed(psy);
+
+ goto success;
+
+create_triggers_failed:
+wakeup_init_failed:
+ device_del(dev);
+kobject_set_name_failed:
+device_add_failed:
+ put_device(dev);
+success:
+ return rc;
+}
+EXPORT_SYMBOL_GPL(power_supply_register);
+
+void power_supply_unregister(struct power_supply *psy)
+{
+ cancel_work_sync(&psy->changed_work);
+ sysfs_remove_link(&psy->dev->kobj, "powers");
+ power_supply_remove_triggers(psy);
+ device_unregister(psy->dev);
+}
+EXPORT_SYMBOL_GPL(power_supply_unregister);
+
+static int __init power_supply_class_init(void)
+{
+ power_supply_class = class_create(THIS_MODULE, "power_supply");
+
+ if (IS_ERR(power_supply_class))
+ return PTR_ERR(power_supply_class);
+
+ power_supply_class->dev_uevent = power_supply_uevent;
+ power_supply_init_attrs(&power_supply_dev_type);
+
+ return 0;
+}
+
+static void __exit power_supply_class_exit(void)
+{
+ class_destroy(power_supply_class);
+}
+
+subsys_initcall(power_supply_class_init);
+module_exit(power_supply_class_exit);
+
+MODULE_DESCRIPTION("Universal power supply monitor class");
+MODULE_AUTHOR("Ian Molton <spyro@f2s.com>, "
+ "Szabolcs Gyurko, "
+ "Anton Vorontsov <cbou@mail.ru>");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/power_supply_leds.c b/ap/os/linux/linux-3.4.x/drivers/power/power_supply_leds.c
new file mode 100644
index 0000000..995f966
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/power_supply_leds.c
@@ -0,0 +1,180 @@
+/*
+ * LEDs triggers for power supply class
+ *
+ * Copyright © 2007 Anton Vorontsov <cbou@mail.ru>
+ * Copyright © 2004 Szabolcs Gyurko
+ * Copyright © 2003 Ian Molton <spyro@f2s.com>
+ *
+ * Modified: 2004, Oct Szabolcs Gyurko
+ *
+ * You may use this code as per GPL version 2
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+
+#include "power_supply.h"
+
+/* Battery specific LEDs triggers. */
+
+static void power_supply_update_bat_leds(struct power_supply *psy)
+{
+ union power_supply_propval status;
+ unsigned long delay_on = 0;
+ unsigned long delay_off = 0;
+
+ if (psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status))
+ return;
+
+ dev_dbg(psy->dev, "%s %d\n", __func__, status.intval);
+
+ switch (status.intval) {
+ case POWER_SUPPLY_STATUS_FULL:
+ led_trigger_event(psy->charging_full_trig, LED_FULL);
+ led_trigger_event(psy->charging_trig, LED_OFF);
+ led_trigger_event(psy->full_trig, LED_FULL);
+ led_trigger_event(psy->charging_blink_full_solid_trig,
+ LED_FULL);
+ break;
+ case POWER_SUPPLY_STATUS_CHARGING:
+ led_trigger_event(psy->charging_full_trig, LED_FULL);
+ led_trigger_event(psy->charging_trig, LED_FULL);
+ led_trigger_event(psy->full_trig, LED_OFF);
+ led_trigger_blink(psy->charging_blink_full_solid_trig,
+ &delay_on, &delay_off);
+ break;
+ default:
+ led_trigger_event(psy->charging_full_trig, LED_OFF);
+ led_trigger_event(psy->charging_trig, LED_OFF);
+ led_trigger_event(psy->full_trig, LED_OFF);
+ led_trigger_event(psy->charging_blink_full_solid_trig,
+ LED_OFF);
+ break;
+ }
+}
+
+static int power_supply_create_bat_triggers(struct power_supply *psy)
+{
+ int rc = 0;
+
+ psy->charging_full_trig_name = kasprintf(GFP_KERNEL,
+ "%s-charging-or-full", psy->name);
+ if (!psy->charging_full_trig_name)
+ goto charging_full_failed;
+
+ psy->charging_trig_name = kasprintf(GFP_KERNEL,
+ "%s-charging", psy->name);
+ if (!psy->charging_trig_name)
+ goto charging_failed;
+
+ psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->name);
+ if (!psy->full_trig_name)
+ goto full_failed;
+
+ psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL,
+ "%s-charging-blink-full-solid", psy->name);
+ if (!psy->charging_blink_full_solid_trig_name)
+ goto charging_blink_full_solid_failed;
+
+ led_trigger_register_simple(psy->charging_full_trig_name,
+ &psy->charging_full_trig);
+ led_trigger_register_simple(psy->charging_trig_name,
+ &psy->charging_trig);
+ led_trigger_register_simple(psy->full_trig_name,
+ &psy->full_trig);
+ led_trigger_register_simple(psy->charging_blink_full_solid_trig_name,
+ &psy->charging_blink_full_solid_trig);
+
+ goto success;
+
+charging_blink_full_solid_failed:
+ kfree(psy->full_trig_name);
+full_failed:
+ kfree(psy->charging_trig_name);
+charging_failed:
+ kfree(psy->charging_full_trig_name);
+charging_full_failed:
+ rc = -ENOMEM;
+success:
+ return rc;
+}
+
+static void power_supply_remove_bat_triggers(struct power_supply *psy)
+{
+ led_trigger_unregister_simple(psy->charging_full_trig);
+ led_trigger_unregister_simple(psy->charging_trig);
+ led_trigger_unregister_simple(psy->full_trig);
+ led_trigger_unregister_simple(psy->charging_blink_full_solid_trig);
+ kfree(psy->charging_blink_full_solid_trig_name);
+ kfree(psy->full_trig_name);
+ kfree(psy->charging_trig_name);
+ kfree(psy->charging_full_trig_name);
+}
+
+/* Generated power specific LEDs triggers. */
+
+static void power_supply_update_gen_leds(struct power_supply *psy)
+{
+ union power_supply_propval online;
+
+ if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online))
+ return;
+
+ dev_dbg(psy->dev, "%s %d\n", __func__, online.intval);
+
+ if (online.intval)
+ led_trigger_event(psy->online_trig, LED_FULL);
+ else
+ led_trigger_event(psy->online_trig, LED_OFF);
+}
+
+static int power_supply_create_gen_triggers(struct power_supply *psy)
+{
+ int rc = 0;
+
+ psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", psy->name);
+ if (!psy->online_trig_name)
+ goto online_failed;
+
+ led_trigger_register_simple(psy->online_trig_name, &psy->online_trig);
+
+ goto success;
+
+online_failed:
+ rc = -ENOMEM;
+success:
+ return rc;
+}
+
+static void power_supply_remove_gen_triggers(struct power_supply *psy)
+{
+ led_trigger_unregister_simple(psy->online_trig);
+ kfree(psy->online_trig_name);
+}
+
+/* Choice what triggers to create&update. */
+
+void power_supply_update_leds(struct power_supply *psy)
+{
+ if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
+ power_supply_update_bat_leds(psy);
+ else
+ power_supply_update_gen_leds(psy);
+}
+
+int power_supply_create_triggers(struct power_supply *psy)
+{
+ if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
+ return power_supply_create_bat_triggers(psy);
+ return power_supply_create_gen_triggers(psy);
+}
+
+void power_supply_remove_triggers(struct power_supply *psy)
+{
+ if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
+ power_supply_remove_bat_triggers(psy);
+ else
+ power_supply_remove_gen_triggers(psy);
+}
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/power_supply_sysfs.c b/ap/os/linux/linux-3.4.x/drivers/power/power_supply_sysfs.c
new file mode 100644
index 0000000..374dd93
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/power_supply_sysfs.c
@@ -0,0 +1,335 @@
+/*
+ * Sysfs interface for the universal power supply monitor class
+ *
+ * Copyright © 2007 David Woodhouse <dwmw2@infradead.org>
+ * Copyright © 2007 Anton Vorontsov <cbou@mail.ru>
+ * Copyright © 2004 Szabolcs Gyurko
+ * Copyright © 2003 Ian Molton <spyro@f2s.com>
+ *
+ * Modified: 2004, Oct Szabolcs Gyurko
+ *
+ * You may use this code as per GPL version 2
+ */
+
+#include <linux/ctype.h>
+#include <linux/device.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+
+#include "power_supply.h"
+
+/*
+ * This is because the name "current" breaks the device attr macro.
+ * The "current" word resolves to "(get_current())" so instead of
+ * "current" "(get_current())" appears in the sysfs.
+ *
+ * The source of this definition is the device.h which calls __ATTR
+ * macro in sysfs.h which calls the __stringify macro.
+ *
+ * Only modification that the name is not tried to be resolved
+ * (as a macro let's say).
+ */
+
+#define POWER_SUPPLY_ATTR(_name) \
+{ \
+ .attr = { .name = #_name }, \
+ .show = power_supply_show_property, \
+ .store = power_supply_store_property, \
+}
+
+static struct device_attribute power_supply_attrs[];
+
+static ssize_t power_supply_show_property(struct device *dev,
+ struct device_attribute *attr,
+ char *buf) {
+ static char *type_text[] = {
+ "Unknown", "Battery", "UPS", "Mains", "USB",
+ "USB_DCP", "USB_CDP", "USB_ACA"
+ };
+ static char *status_text[] = {
+ "Unknown", "Charging", "Discharging", "Not charging", "Full"
+ };
+ /*
+ static char *charge_type[] = {
+ "Unknown", "N/A", "Trickle", "Fast"
+ };
+ */
+ static char *health_text[] = {
+ "Unknown", "Good", "Overheat", "Dead", "Over voltage",
+ "Unspecified failure", "Cold","Saferty Timer Expire","Warm","Cool"
+ };
+ static char *technology_text[] = {
+ "Unknown", "NiMH", "Li-ion", "Li-poly", "LiFe", "NiCd",
+ "LiMn"
+ };
+ static char *capacity_level_text[] = {
+ "Unknown", "Critical", "Low", "Normal", "High", "Full"
+ };
+ static char *scope_text[] = {
+ "Unknown", "NewHardware", "OldHardware"
+ };
+ static char *pc1_ac2[] = {
+ "Unknown", "PC", "AC"
+ };
+ ssize_t ret = 0;
+ struct power_supply *psy = dev_get_drvdata(dev);
+ const ptrdiff_t off = attr - power_supply_attrs;
+ union power_supply_propval value;
+
+ if(!psy)
+ return -EINVAL;
+
+ if (off == POWER_SUPPLY_PROP_TYPE)
+ value.intval = psy->type;
+ else
+ ret = psy->get_property(psy, off, &value);
+
+ if (ret < 0) {
+ if (ret == -ENODATA)
+ dev_dbg(dev, "driver has no data for `%s' property\n",
+ attr->attr.name);
+ else if (ret != -ENODEV)
+ dev_err(dev, "driver failed to report `%s' property: %zd\n",
+ attr->attr.name, ret);
+ return ret;
+ }
+
+ if (off == POWER_SUPPLY_PROP_STATUS)
+ return sprintf(buf, "%s\n", status_text[value.intval]);
+ else if (off == POWER_SUPPLY_PROP_CHARGE_TYPE)
+ return sprintf(buf, "%s\n", type_text[value.intval]);
+ else if (off == POWER_SUPPLY_PROP_HEALTH)
+ return sprintf(buf, "%s\n", health_text[value.intval]);
+ else if (off == POWER_SUPPLY_PROP_TECHNOLOGY)
+ return sprintf(buf, "%s\n", technology_text[value.intval]);
+ else if (off == POWER_SUPPLY_PROP_CAPACITY_LEVEL)
+ return sprintf(buf, "%s\n", capacity_level_text[value.intval]);
+ else if (off == POWER_SUPPLY_PROP_TYPE)
+ return sprintf(buf, "%s\n", type_text[value.intval]);
+ else if (off == POWER_SUPPLY_PROP_SCOPE)
+ return sprintf(buf, "%s\n", scope_text[value.intval]);
+ else if (off == POWER_SUPPLY_PROP_PC1_AC2)
+ return sprintf(buf, "%s\n", pc1_ac2[value.intval]);
+ else if (off >= POWER_SUPPLY_PROP_MODEL_NAME)
+ return sprintf(buf, "%s\n", value.strval);
+
+ return sprintf(buf, "%d\n", value.intval);
+}
+
+static ssize_t power_supply_store_property(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count) {
+ ssize_t ret;
+ struct power_supply *psy = dev_get_drvdata(dev);
+ const ptrdiff_t off = attr - power_supply_attrs;
+ union power_supply_propval value;
+ long long_val;
+
+ if(!psy)
+ return -EINVAL;
+
+ /* TODO: support other types than int */
+ ret = strict_strtol(buf, 10, &long_val);
+ if (ret < 0)
+ return ret;
+
+ value.intval = long_val;
+
+ ret = psy->set_property(psy, off, &value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+/* Must be in the same order as POWER_SUPPLY_PROP_* */
+static struct device_attribute power_supply_attrs[] = {
+ /* Properties of type `int' */
+ POWER_SUPPLY_ATTR(status),
+ POWER_SUPPLY_ATTR(charge_type),
+ POWER_SUPPLY_ATTR(health),
+ POWER_SUPPLY_ATTR(present),
+ POWER_SUPPLY_ATTR(online),
+ POWER_SUPPLY_ATTR(technology),
+ POWER_SUPPLY_ATTR(cycle_count),
+ POWER_SUPPLY_ATTR(voltage_max),
+ POWER_SUPPLY_ATTR(voltage_min),
+ POWER_SUPPLY_ATTR(voltage_max_design),
+ POWER_SUPPLY_ATTR(voltage_min_design),
+ POWER_SUPPLY_ATTR(voltage_now),
+ POWER_SUPPLY_ATTR(voltage_avg),
+ POWER_SUPPLY_ATTR(current_max),
+ POWER_SUPPLY_ATTR(current_now),
+ POWER_SUPPLY_ATTR(current_avg),
+ POWER_SUPPLY_ATTR(power_now),
+ POWER_SUPPLY_ATTR(power_avg),
+ POWER_SUPPLY_ATTR(charge_full_design),
+ POWER_SUPPLY_ATTR(charge_empty_design),
+ POWER_SUPPLY_ATTR(charge_full),
+ POWER_SUPPLY_ATTR(charge_empty),
+ POWER_SUPPLY_ATTR(charge_now),
+ POWER_SUPPLY_ATTR(charge_avg),
+ POWER_SUPPLY_ATTR(charge_counter),
+ POWER_SUPPLY_ATTR(energy_full_design),
+ POWER_SUPPLY_ATTR(energy_empty_design),
+ POWER_SUPPLY_ATTR(energy_full),
+ POWER_SUPPLY_ATTR(energy_empty),
+ POWER_SUPPLY_ATTR(energy_now),
+ POWER_SUPPLY_ATTR(energy_avg),
+ POWER_SUPPLY_ATTR(capacity),
+ POWER_SUPPLY_ATTR(capacity_level),
+ POWER_SUPPLY_ATTR(temp),
+ POWER_SUPPLY_ATTR(temp_ambient),
+ POWER_SUPPLY_ATTR(time_to_empty_now),
+ POWER_SUPPLY_ATTR(time_to_empty_avg),
+ POWER_SUPPLY_ATTR(time_to_full_now),
+ POWER_SUPPLY_ATTR(time_to_full_avg),
+ POWER_SUPPLY_ATTR(type),
+ POWER_SUPPLY_ATTR(scope),
+ /* Local extensions */
+ POWER_SUPPLY_ATTR(usb_hc),
+ POWER_SUPPLY_ATTR(usb_otg),
+ POWER_SUPPLY_ATTR(charge_enabled),
+ POWER_SUPPLY_ATTR(pc1_ac2),
+ POWER_SUPPLY_ATTR(boost_enabled),
+ /* Properties of type `const char *' */
+ POWER_SUPPLY_ATTR(model_name),
+ POWER_SUPPLY_ATTR(manufacturer),
+ POWER_SUPPLY_ATTR(serial_number),
+};
+
+static struct attribute *
+__power_supply_attrs[ARRAY_SIZE(power_supply_attrs) + 1];
+
+static umode_t power_supply_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr,
+ int attrno)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct power_supply *psy = dev_get_drvdata(dev);
+ umode_t mode = S_IRUSR | S_IRGRP | S_IROTH;
+ int i;
+
+ if (attrno == POWER_SUPPLY_PROP_TYPE)
+ return mode;
+
+ if(!psy)
+ return 0;
+
+ for (i = 0; i < psy->num_properties; i++) {
+ int property = psy->properties[i];
+
+ if (property == attrno) {
+ if (psy->property_is_writeable &&
+ psy->property_is_writeable(psy, property) > 0)
+ mode |= S_IWUSR;
+
+ return mode;
+ }
+ }
+
+ return 0;
+}
+
+static struct attribute_group power_supply_attr_group = {
+ .attrs = __power_supply_attrs,
+ .is_visible = power_supply_attr_is_visible,
+};
+
+static const struct attribute_group *power_supply_attr_groups[] = {
+ &power_supply_attr_group,
+ NULL,
+};
+
+void power_supply_init_attrs(struct device_type *dev_type)
+{
+ int i;
+
+ dev_type->groups = power_supply_attr_groups;
+
+ for (i = 0; i < ARRAY_SIZE(power_supply_attrs); i++)
+ __power_supply_attrs[i] = &power_supply_attrs[i].attr;
+}
+
+static char *kstruprdup(const char *str, gfp_t gfp)
+{
+ char *ret, *ustr;
+
+ ustr = ret = kmalloc(strlen(str) + 1, gfp);
+
+ if (!ret)
+ return NULL;
+
+ while (*str)
+ *ustr++ = toupper(*str++);
+
+ *ustr = 0;
+
+ return ret;
+}
+
+int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ struct power_supply *psy = dev_get_drvdata(dev);
+ int ret = 0, j;
+ char *prop_buf;
+ char *attrname;
+
+ dev_dbg(dev, "uevent\n");
+
+ if (!psy || !psy->dev) {
+ dev_dbg(dev, "No power supply yet\n");
+ return ret;
+ }
+
+ dev_dbg(dev, "POWER_SUPPLY_NAME=%s\n", psy->name);
+
+ ret = add_uevent_var(env, "POWER_SUPPLY_NAME=%s", psy->name);
+ if (ret)
+ return ret;
+
+ prop_buf = (char *)get_zeroed_page(GFP_KERNEL);
+ if (!prop_buf)
+ return -ENOMEM;
+
+ for (j = 0; j < psy->num_properties; j++) {
+ struct device_attribute *attr;
+ char *line;
+
+ attr = &power_supply_attrs[psy->properties[j]];
+
+ ret = power_supply_show_property(dev, attr, prop_buf);
+ if (ret == -ENODEV || ret == -ENODATA) {
+ /* When a battery is absent, we expect -ENODEV. Don't abort;
+ send the uevent with at least the the PRESENT=0 property */
+ ret = 0;
+ continue;
+ }
+
+ if (ret < 0)
+ goto out;
+
+ line = strchr(prop_buf, '\n');
+ if (line)
+ *line = 0;
+
+ attrname = kstruprdup(attr->attr.name, GFP_KERNEL);
+ if (!attrname) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ dev_dbg(dev, "prop %s=%s\n", attrname, prop_buf);
+
+ ret = add_uevent_var(env, "POWER_SUPPLY_%s=%s", attrname, prop_buf);
+ kfree(attrname);
+ if (ret)
+ goto out;
+ }
+
+out:
+ free_page((unsigned long)prop_buf);
+
+ return ret;
+}
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/s3c_adc_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/s3c_adc_battery.c
new file mode 100644
index 0000000..8b804a5
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/s3c_adc_battery.c
@@ -0,0 +1,447 @@
+/*
+ * iPAQ h1930/h1940/rx1950 battery controller driver
+ * Copyright (c) Vasily Khoruzhick
+ * Based on h1940_battery.c by Arnaud Patard
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ *
+ */
+
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include <linux/err.h>
+#include <linux/timer.h>
+#include <linux/jiffies.h>
+#include <linux/s3c_adc_battery.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include <plat/adc.h>
+
+#define BAT_POLL_INTERVAL 10000 /* ms */
+#define JITTER_DELAY 500 /* ms */
+
+struct s3c_adc_bat {
+ struct power_supply psy;
+ struct s3c_adc_client *client;
+ struct s3c_adc_bat_pdata *pdata;
+ int volt_value;
+ int cur_value;
+ unsigned int timestamp;
+ int level;
+ int status;
+ int cable_plugged:1;
+};
+
+static struct delayed_work bat_work;
+
+static void s3c_adc_bat_ext_power_changed(struct power_supply *psy)
+{
+ schedule_delayed_work(&bat_work,
+ msecs_to_jiffies(JITTER_DELAY));
+}
+
+static int gather_samples(struct s3c_adc_client *client, int num, int channel)
+{
+ int value, i;
+
+ /* default to 1 if nothing is set */
+ if (num < 1)
+ num = 1;
+
+ value = 0;
+ for (i = 0; i < num; i++)
+ value += s3c_adc_read(client, channel);
+ value /= num;
+
+ return value;
+}
+
+static enum power_supply_property s3c_adc_backup_bat_props[] = {
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+};
+
+static int s3c_adc_backup_bat_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct s3c_adc_bat *bat = container_of(psy, struct s3c_adc_bat, psy);
+
+ if (!bat) {
+ dev_err(psy->dev, "%s: no battery infos ?!\n", __func__);
+ return -EINVAL;
+ }
+
+ if (bat->volt_value < 0 ||
+ jiffies_to_msecs(jiffies - bat->timestamp) >
+ BAT_POLL_INTERVAL) {
+ bat->volt_value = gather_samples(bat->client,
+ bat->pdata->backup_volt_samples,
+ bat->pdata->backup_volt_channel);
+ bat->volt_value *= bat->pdata->backup_volt_mult;
+ bat->timestamp = jiffies;
+ }
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = bat->volt_value;
+ return 0;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+ val->intval = bat->pdata->backup_volt_min;
+ return 0;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ val->intval = bat->pdata->backup_volt_max;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static struct s3c_adc_bat backup_bat = {
+ .psy = {
+ .name = "backup-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = s3c_adc_backup_bat_props,
+ .num_properties = ARRAY_SIZE(s3c_adc_backup_bat_props),
+ .get_property = s3c_adc_backup_bat_get_property,
+ .use_for_apm = 1,
+ },
+};
+
+static enum power_supply_property s3c_adc_main_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+};
+
+static int calc_full_volt(int volt_val, int cur_val, int impedance)
+{
+ return volt_val + cur_val * impedance / 1000;
+}
+
+static int charge_finished(struct s3c_adc_bat *bat)
+{
+ return bat->pdata->gpio_inverted ?
+ !gpio_get_value(bat->pdata->gpio_charge_finished) :
+ gpio_get_value(bat->pdata->gpio_charge_finished);
+}
+
+static int s3c_adc_bat_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct s3c_adc_bat *bat = container_of(psy, struct s3c_adc_bat, psy);
+
+ int new_level;
+ int full_volt;
+ const struct s3c_adc_bat_thresh *lut = bat->pdata->lut_noac;
+ unsigned int lut_size = bat->pdata->lut_noac_cnt;
+
+ if (!bat) {
+ dev_err(psy->dev, "no battery infos ?!\n");
+ return -EINVAL;
+ }
+
+ if (bat->volt_value < 0 || bat->cur_value < 0 ||
+ jiffies_to_msecs(jiffies - bat->timestamp) >
+ BAT_POLL_INTERVAL) {
+ bat->volt_value = gather_samples(bat->client,
+ bat->pdata->volt_samples,
+ bat->pdata->volt_channel) * bat->pdata->volt_mult;
+ bat->cur_value = gather_samples(bat->client,
+ bat->pdata->current_samples,
+ bat->pdata->current_channel) * bat->pdata->current_mult;
+ bat->timestamp = jiffies;
+ }
+
+ if (bat->cable_plugged &&
+ ((bat->pdata->gpio_charge_finished < 0) ||
+ !charge_finished(bat))) {
+ lut = bat->pdata->lut_acin;
+ lut_size = bat->pdata->lut_acin_cnt;
+ }
+
+ new_level = 100000;
+ full_volt = calc_full_volt((bat->volt_value / 1000),
+ (bat->cur_value / 1000), bat->pdata->internal_impedance);
+
+ if (full_volt < calc_full_volt(lut->volt, lut->cur,
+ bat->pdata->internal_impedance)) {
+ lut_size--;
+ while (lut_size--) {
+ int lut_volt1;
+ int lut_volt2;
+
+ lut_volt1 = calc_full_volt(lut[0].volt, lut[0].cur,
+ bat->pdata->internal_impedance);
+ lut_volt2 = calc_full_volt(lut[1].volt, lut[1].cur,
+ bat->pdata->internal_impedance);
+ if (full_volt < lut_volt1 && full_volt >= lut_volt2) {
+ new_level = (lut[1].level +
+ (lut[0].level - lut[1].level) *
+ (full_volt - lut_volt2) /
+ (lut_volt1 - lut_volt2)) * 1000;
+ break;
+ }
+ new_level = lut[1].level * 1000;
+ lut++;
+ }
+ }
+
+ bat->level = new_level;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (bat->pdata->gpio_charge_finished < 0)
+ val->intval = bat->level == 100000 ?
+ POWER_SUPPLY_STATUS_FULL : bat->status;
+ else
+ val->intval = bat->status;
+ return 0;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ val->intval = 100000;
+ return 0;
+ case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN:
+ val->intval = 0;
+ return 0;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ val->intval = bat->level;
+ return 0;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = bat->volt_value;
+ return 0;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = bat->cur_value;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static struct s3c_adc_bat main_bat = {
+ .psy = {
+ .name = "main-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = s3c_adc_main_bat_props,
+ .num_properties = ARRAY_SIZE(s3c_adc_main_bat_props),
+ .get_property = s3c_adc_bat_get_property,
+ .external_power_changed = s3c_adc_bat_ext_power_changed,
+ .use_for_apm = 1,
+ },
+};
+
+static void s3c_adc_bat_work(struct work_struct *work)
+{
+ struct s3c_adc_bat *bat = &main_bat;
+ int is_charged;
+ int is_plugged;
+ static int was_plugged;
+
+ is_plugged = power_supply_am_i_supplied(&bat->psy);
+ bat->cable_plugged = is_plugged;
+ if (is_plugged != was_plugged) {
+ was_plugged = is_plugged;
+ if (is_plugged) {
+ if (bat->pdata->enable_charger)
+ bat->pdata->enable_charger();
+ bat->status = POWER_SUPPLY_STATUS_CHARGING;
+ } else {
+ if (bat->pdata->disable_charger)
+ bat->pdata->disable_charger();
+ bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+ } else {
+ if ((bat->pdata->gpio_charge_finished >= 0) && is_plugged) {
+ is_charged = charge_finished(&main_bat);
+ if (is_charged) {
+ if (bat->pdata->disable_charger)
+ bat->pdata->disable_charger();
+ bat->status = POWER_SUPPLY_STATUS_FULL;
+ } else {
+ if (bat->pdata->enable_charger)
+ bat->pdata->enable_charger();
+ bat->status = POWER_SUPPLY_STATUS_CHARGING;
+ }
+ }
+ }
+
+ power_supply_changed(&bat->psy);
+}
+
+static irqreturn_t s3c_adc_bat_charged(int irq, void *dev_id)
+{
+ schedule_delayed_work(&bat_work,
+ msecs_to_jiffies(JITTER_DELAY));
+ return IRQ_HANDLED;
+}
+
+static int __devinit s3c_adc_bat_probe(struct platform_device *pdev)
+{
+ struct s3c_adc_client *client;
+ struct s3c_adc_bat_pdata *pdata = pdev->dev.platform_data;
+ int ret;
+
+ client = s3c_adc_register(pdev, NULL, NULL, 0);
+ if (IS_ERR(client)) {
+ dev_err(&pdev->dev, "cannot register adc\n");
+ return PTR_ERR(client);
+ }
+
+ platform_set_drvdata(pdev, client);
+
+ main_bat.client = client;
+ main_bat.pdata = pdata;
+ main_bat.volt_value = -1;
+ main_bat.cur_value = -1;
+ main_bat.cable_plugged = 0;
+ main_bat.status = POWER_SUPPLY_STATUS_DISCHARGING;
+
+ ret = power_supply_register(&pdev->dev, &main_bat.psy);
+ if (ret)
+ goto err_reg_main;
+ if (pdata->backup_volt_mult) {
+ backup_bat.client = client;
+ backup_bat.pdata = pdev->dev.platform_data;
+ backup_bat.volt_value = -1;
+ ret = power_supply_register(&pdev->dev, &backup_bat.psy);
+ if (ret)
+ goto err_reg_backup;
+ }
+
+ INIT_DELAYED_WORK(&bat_work, s3c_adc_bat_work);
+
+ if (pdata->gpio_charge_finished >= 0) {
+ ret = gpio_request(pdata->gpio_charge_finished, "charged");
+ if (ret)
+ goto err_gpio;
+
+ ret = request_irq(gpio_to_irq(pdata->gpio_charge_finished),
+ s3c_adc_bat_charged,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "battery charged", NULL);
+ if (ret)
+ goto err_irq;
+ }
+
+ if (pdata->init) {
+ ret = pdata->init();
+ if (ret)
+ goto err_platform;
+ }
+
+ dev_info(&pdev->dev, "successfully loaded\n");
+ device_init_wakeup(&pdev->dev, 1);
+
+ /* Schedule timer to check current status */
+ schedule_delayed_work(&bat_work,
+ msecs_to_jiffies(JITTER_DELAY));
+
+ return 0;
+
+err_platform:
+ if (pdata->gpio_charge_finished >= 0)
+ free_irq(gpio_to_irq(pdata->gpio_charge_finished), NULL);
+err_irq:
+ if (pdata->gpio_charge_finished >= 0)
+ gpio_free(pdata->gpio_charge_finished);
+err_gpio:
+ if (pdata->backup_volt_mult)
+ power_supply_unregister(&backup_bat.psy);
+err_reg_backup:
+ power_supply_unregister(&main_bat.psy);
+err_reg_main:
+ return ret;
+}
+
+static int s3c_adc_bat_remove(struct platform_device *pdev)
+{
+ struct s3c_adc_client *client = platform_get_drvdata(pdev);
+ struct s3c_adc_bat_pdata *pdata = pdev->dev.platform_data;
+
+ power_supply_unregister(&main_bat.psy);
+ if (pdata->backup_volt_mult)
+ power_supply_unregister(&backup_bat.psy);
+
+ s3c_adc_release(client);
+
+ if (pdata->gpio_charge_finished >= 0) {
+ free_irq(gpio_to_irq(pdata->gpio_charge_finished), NULL);
+ gpio_free(pdata->gpio_charge_finished);
+ }
+
+ cancel_delayed_work(&bat_work);
+
+ if (pdata->exit)
+ pdata->exit();
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int s3c_adc_bat_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct s3c_adc_bat_pdata *pdata = pdev->dev.platform_data;
+
+ if (pdata->gpio_charge_finished >= 0) {
+ if (device_may_wakeup(&pdev->dev))
+ enable_irq_wake(
+ gpio_to_irq(pdata->gpio_charge_finished));
+ else {
+ disable_irq(gpio_to_irq(pdata->gpio_charge_finished));
+ main_bat.pdata->disable_charger();
+ }
+ }
+
+ return 0;
+}
+
+static int s3c_adc_bat_resume(struct platform_device *pdev)
+{
+ struct s3c_adc_bat_pdata *pdata = pdev->dev.platform_data;
+
+ if (pdata->gpio_charge_finished >= 0) {
+ if (device_may_wakeup(&pdev->dev))
+ disable_irq_wake(
+ gpio_to_irq(pdata->gpio_charge_finished));
+ else
+ enable_irq(gpio_to_irq(pdata->gpio_charge_finished));
+ }
+
+ /* Schedule timer to check current status */
+ schedule_delayed_work(&bat_work,
+ msecs_to_jiffies(JITTER_DELAY));
+
+ return 0;
+}
+#else
+#define s3c_adc_bat_suspend NULL
+#define s3c_adc_bat_resume NULL
+#endif
+
+static struct platform_driver s3c_adc_bat_driver = {
+ .driver = {
+ .name = "s3c-adc-battery",
+ },
+ .probe = s3c_adc_bat_probe,
+ .remove = s3c_adc_bat_remove,
+ .suspend = s3c_adc_bat_suspend,
+ .resume = s3c_adc_bat_resume,
+};
+
+module_platform_driver(s3c_adc_bat_driver);
+
+MODULE_AUTHOR("Vasily Khoruzhick <anarsoul@gmail.com>");
+MODULE_DESCRIPTION("iPAQ H1930/H1940/RX1950 battery controller driver");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/sbs-battery.c b/ap/os/linux/linux-3.4.x/drivers/power/sbs-battery.c
new file mode 100644
index 0000000..06b659d
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/sbs-battery.c
@@ -0,0 +1,858 @@
+/*
+ * Gas Gauge driver for SBS Compliant Batteries
+ *
+ * Copyright (c) 2010, NVIDIA Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/power_supply.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+
+#include <linux/power/sbs-battery.h>
+
+enum {
+ REG_MANUFACTURER_DATA,
+ REG_TEMPERATURE,
+ REG_VOLTAGE,
+ REG_CURRENT,
+ REG_CAPACITY,
+ REG_TIME_TO_EMPTY,
+ REG_TIME_TO_FULL,
+ REG_STATUS,
+ REG_CYCLE_COUNT,
+ REG_SERIAL_NUMBER,
+ REG_REMAINING_CAPACITY,
+ REG_REMAINING_CAPACITY_CHARGE,
+ REG_FULL_CHARGE_CAPACITY,
+ REG_FULL_CHARGE_CAPACITY_CHARGE,
+ REG_DESIGN_CAPACITY,
+ REG_DESIGN_CAPACITY_CHARGE,
+ REG_DESIGN_VOLTAGE,
+};
+
+/* Battery Mode defines */
+#define BATTERY_MODE_OFFSET 0x03
+#define BATTERY_MODE_MASK 0x8000
+enum sbs_battery_mode {
+ BATTERY_MODE_AMPS,
+ BATTERY_MODE_WATTS
+};
+
+/* manufacturer access defines */
+#define MANUFACTURER_ACCESS_STATUS 0x0006
+#define MANUFACTURER_ACCESS_SLEEP 0x0011
+
+/* battery status value bits */
+#define BATTERY_DISCHARGING 0x40
+#define BATTERY_FULL_CHARGED 0x20
+#define BATTERY_FULL_DISCHARGED 0x10
+
+#define SBS_DATA(_psp, _addr, _min_value, _max_value) { \
+ .psp = _psp, \
+ .addr = _addr, \
+ .min_value = _min_value, \
+ .max_value = _max_value, \
+}
+
+static const struct chip_data {
+ enum power_supply_property psp;
+ u8 addr;
+ int min_value;
+ int max_value;
+} sbs_data[] = {
+ [REG_MANUFACTURER_DATA] =
+ SBS_DATA(POWER_SUPPLY_PROP_PRESENT, 0x00, 0, 65535),
+ [REG_TEMPERATURE] =
+ SBS_DATA(POWER_SUPPLY_PROP_TEMP, 0x08, 0, 65535),
+ [REG_VOLTAGE] =
+ SBS_DATA(POWER_SUPPLY_PROP_VOLTAGE_NOW, 0x09, 0, 20000),
+ [REG_CURRENT] =
+ SBS_DATA(POWER_SUPPLY_PROP_CURRENT_NOW, 0x0A, -32768, 32767),
+ [REG_CAPACITY] =
+ SBS_DATA(POWER_SUPPLY_PROP_CAPACITY, 0x0E, 0, 100),
+ [REG_REMAINING_CAPACITY] =
+ SBS_DATA(POWER_SUPPLY_PROP_ENERGY_NOW, 0x0F, 0, 65535),
+ [REG_REMAINING_CAPACITY_CHARGE] =
+ SBS_DATA(POWER_SUPPLY_PROP_CHARGE_NOW, 0x0F, 0, 65535),
+ [REG_FULL_CHARGE_CAPACITY] =
+ SBS_DATA(POWER_SUPPLY_PROP_ENERGY_FULL, 0x10, 0, 65535),
+ [REG_FULL_CHARGE_CAPACITY_CHARGE] =
+ SBS_DATA(POWER_SUPPLY_PROP_CHARGE_FULL, 0x10, 0, 65535),
+ [REG_TIME_TO_EMPTY] =
+ SBS_DATA(POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 0x12, 0, 65535),
+ [REG_TIME_TO_FULL] =
+ SBS_DATA(POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, 0x13, 0, 65535),
+ [REG_STATUS] =
+ SBS_DATA(POWER_SUPPLY_PROP_STATUS, 0x16, 0, 65535),
+ [REG_CYCLE_COUNT] =
+ SBS_DATA(POWER_SUPPLY_PROP_CYCLE_COUNT, 0x17, 0, 65535),
+ [REG_DESIGN_CAPACITY] =
+ SBS_DATA(POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, 0x18, 0, 65535),
+ [REG_DESIGN_CAPACITY_CHARGE] =
+ SBS_DATA(POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 0x18, 0, 65535),
+ [REG_DESIGN_VOLTAGE] =
+ SBS_DATA(POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, 0x19, 0, 65535),
+ [REG_SERIAL_NUMBER] =
+ SBS_DATA(POWER_SUPPLY_PROP_SERIAL_NUMBER, 0x1C, 0, 65535),
+};
+
+static enum power_supply_property sbs_properties[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
+ POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_ENERGY_NOW,
+ POWER_SUPPLY_PROP_ENERGY_FULL,
+ POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+};
+
+struct sbs_info {
+ struct i2c_client *client;
+ struct power_supply power_supply;
+ struct sbs_platform_data *pdata;
+ bool is_present;
+ bool gpio_detect;
+ bool enable_detection;
+ int irq;
+ int last_state;
+ int poll_time;
+ struct delayed_work work;
+ int ignore_changes;
+};
+
+static int sbs_read_word_data(struct i2c_client *client, u8 address)
+{
+ struct sbs_info *chip = i2c_get_clientdata(client);
+ s32 ret = 0;
+ int retries = 1;
+
+ if (chip->pdata)
+ retries = max(chip->pdata->i2c_retry_count + 1, 1);
+
+ while (retries > 0) {
+ ret = i2c_smbus_read_word_data(client, address);
+ if (ret >= 0)
+ break;
+ retries--;
+ }
+
+ if (ret < 0) {
+ dev_dbg(&client->dev,
+ "%s: i2c read at address 0x%x failed\n",
+ __func__, address);
+ return ret;
+ }
+
+ return le16_to_cpu(ret);
+}
+
+static int sbs_write_word_data(struct i2c_client *client, u8 address,
+ u16 value)
+{
+ struct sbs_info *chip = i2c_get_clientdata(client);
+ s32 ret = 0;
+ int retries = 1;
+
+ if (chip->pdata)
+ retries = max(chip->pdata->i2c_retry_count + 1, 1);
+
+ while (retries > 0) {
+ ret = i2c_smbus_write_word_data(client, address,
+ le16_to_cpu(value));
+ if (ret >= 0)
+ break;
+ retries--;
+ }
+
+ if (ret < 0) {
+ dev_dbg(&client->dev,
+ "%s: i2c write to address 0x%x failed\n",
+ __func__, address);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int sbs_get_battery_presence_and_health(
+ struct i2c_client *client, enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ s32 ret;
+ struct sbs_info *chip = i2c_get_clientdata(client);
+
+ if (psp == POWER_SUPPLY_PROP_PRESENT &&
+ chip->gpio_detect) {
+ ret = gpio_get_value(chip->pdata->battery_detect);
+ if (ret == chip->pdata->battery_detect_present)
+ val->intval = 1;
+ else
+ val->intval = 0;
+ chip->is_present = val->intval;
+ return ret;
+ }
+
+ /* Write to ManufacturerAccess with
+ * ManufacturerAccess command and then
+ * read the status */
+ ret = sbs_write_word_data(client, sbs_data[REG_MANUFACTURER_DATA].addr,
+ MANUFACTURER_ACCESS_STATUS);
+ if (ret < 0) {
+ if (psp == POWER_SUPPLY_PROP_PRESENT)
+ val->intval = 0; /* battery removed */
+ return ret;
+ }
+
+ ret = sbs_read_word_data(client, sbs_data[REG_MANUFACTURER_DATA].addr);
+ if (ret < 0)
+ return ret;
+
+ if (ret < sbs_data[REG_MANUFACTURER_DATA].min_value ||
+ ret > sbs_data[REG_MANUFACTURER_DATA].max_value) {
+ val->intval = 0;
+ return 0;
+ }
+
+ /* Mask the upper nibble of 2nd byte and
+ * lower byte of response then
+ * shift the result by 8 to get status*/
+ ret &= 0x0F00;
+ ret >>= 8;
+ if (psp == POWER_SUPPLY_PROP_PRESENT) {
+ if (ret == 0x0F)
+ /* battery removed */
+ val->intval = 0;
+ else
+ val->intval = 1;
+ } else if (psp == POWER_SUPPLY_PROP_HEALTH) {
+ if (ret == 0x09)
+ val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ else if (ret == 0x0B)
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else if (ret == 0x0C)
+ val->intval = POWER_SUPPLY_HEALTH_DEAD;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ }
+
+ return 0;
+}
+
+static int sbs_get_battery_property(struct i2c_client *client,
+ int reg_offset, enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct sbs_info *chip = i2c_get_clientdata(client);
+ s32 ret;
+
+ ret = sbs_read_word_data(client, sbs_data[reg_offset].addr);
+ if (ret < 0)
+ return ret;
+
+ /* returned values are 16 bit */
+ if (sbs_data[reg_offset].min_value < 0)
+ ret = (s16)ret;
+
+ if (ret >= sbs_data[reg_offset].min_value &&
+ ret <= sbs_data[reg_offset].max_value) {
+ val->intval = ret;
+ if (psp != POWER_SUPPLY_PROP_STATUS)
+ return 0;
+
+ if (ret & BATTERY_FULL_CHARGED)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ else if (ret & BATTERY_FULL_DISCHARGED)
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else if (ret & BATTERY_DISCHARGING)
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+
+ if (chip->poll_time == 0)
+ chip->last_state = val->intval;
+ else if (chip->last_state != val->intval) {
+ cancel_delayed_work_sync(&chip->work);
+ power_supply_changed(&chip->power_supply);
+ chip->poll_time = 0;
+ }
+ } else {
+ if (psp == POWER_SUPPLY_PROP_STATUS)
+ val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
+ else
+ val->intval = 0;
+ }
+
+ return 0;
+}
+
+static void sbs_unit_adjustment(struct i2c_client *client,
+ enum power_supply_property psp, union power_supply_propval *val)
+{
+#define BASE_UNIT_CONVERSION 1000
+#define BATTERY_MODE_CAP_MULT_WATT (10 * BASE_UNIT_CONVERSION)
+#define TIME_UNIT_CONVERSION 60
+#define TEMP_KELVIN_TO_CELSIUS 2731
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ENERGY_NOW:
+ case POWER_SUPPLY_PROP_ENERGY_FULL:
+ case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
+ /* sbs provides energy in units of 10mWh.
+ * Convert to µWh
+ */
+ val->intval *= BATTERY_MODE_CAP_MULT_WATT;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ val->intval *= BASE_UNIT_CONVERSION;
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ /* sbs provides battery temperature in 0.1K
+ * so convert it to 0.1°C
+ */
+ val->intval -= TEMP_KELVIN_TO_CELSIUS;
+ break;
+
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+ case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
+ /* sbs provides time to empty and time to full in minutes.
+ * Convert to seconds
+ */
+ val->intval *= TIME_UNIT_CONVERSION;
+ break;
+
+ default:
+ dev_dbg(&client->dev,
+ "%s: no need for unit conversion %d\n", __func__, psp);
+ }
+}
+
+static enum sbs_battery_mode sbs_set_battery_mode(struct i2c_client *client,
+ enum sbs_battery_mode mode)
+{
+ int ret, original_val;
+
+ original_val = sbs_read_word_data(client, BATTERY_MODE_OFFSET);
+ if (original_val < 0)
+ return original_val;
+
+ if ((original_val & BATTERY_MODE_MASK) == mode)
+ return mode;
+
+ if (mode == BATTERY_MODE_AMPS)
+ ret = original_val & ~BATTERY_MODE_MASK;
+ else
+ ret = original_val | BATTERY_MODE_MASK;
+
+ ret = sbs_write_word_data(client, BATTERY_MODE_OFFSET, ret);
+ if (ret < 0)
+ return ret;
+
+ return original_val & BATTERY_MODE_MASK;
+}
+
+static int sbs_get_battery_capacity(struct i2c_client *client,
+ int reg_offset, enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ s32 ret;
+ enum sbs_battery_mode mode = BATTERY_MODE_WATTS;
+
+ if (power_supply_is_amp_property(psp))
+ mode = BATTERY_MODE_AMPS;
+
+ mode = sbs_set_battery_mode(client, mode);
+ if (mode < 0)
+ return mode;
+
+ ret = sbs_read_word_data(client, sbs_data[reg_offset].addr);
+ if (ret < 0)
+ return ret;
+
+ if (psp == POWER_SUPPLY_PROP_CAPACITY) {
+ /* sbs spec says that this can be >100 %
+ * even if max value is 100 % */
+ val->intval = min(ret, 100);
+ } else
+ val->intval = ret;
+
+ ret = sbs_set_battery_mode(client, mode);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static char sbs_serial[5];
+static int sbs_get_battery_serial_number(struct i2c_client *client,
+ union power_supply_propval *val)
+{
+ int ret;
+
+ ret = sbs_read_word_data(client, sbs_data[REG_SERIAL_NUMBER].addr);
+ if (ret < 0)
+ return ret;
+
+ ret = sprintf(sbs_serial, "%04x", ret);
+ val->strval = sbs_serial;
+
+ return 0;
+}
+
+static int sbs_get_property_index(struct i2c_client *client,
+ enum power_supply_property psp)
+{
+ int count;
+ for (count = 0; count < ARRAY_SIZE(sbs_data); count++)
+ if (psp == sbs_data[count].psp)
+ return count;
+
+ dev_warn(&client->dev,
+ "%s: Invalid Property - %d\n", __func__, psp);
+
+ return -EINVAL;
+}
+
+static int sbs_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ struct sbs_info *chip = container_of(psy,
+ struct sbs_info, power_supply);
+ struct i2c_client *client = chip->client;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = sbs_get_battery_presence_and_health(client, psp, val);
+ if (psp == POWER_SUPPLY_PROP_PRESENT)
+ return 0;
+ break;
+
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ break;
+
+ case POWER_SUPPLY_PROP_ENERGY_NOW:
+ case POWER_SUPPLY_PROP_ENERGY_FULL:
+ case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = sbs_get_property_index(client, psp);
+ if (ret < 0)
+ break;
+
+ ret = sbs_get_battery_capacity(client, ret, psp, val);
+ break;
+
+ case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+ ret = sbs_get_battery_serial_number(client, val);
+ break;
+
+ case POWER_SUPPLY_PROP_STATUS:
+ case POWER_SUPPLY_PROP_CYCLE_COUNT:
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ case POWER_SUPPLY_PROP_TEMP:
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+ case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ ret = sbs_get_property_index(client, psp);
+ if (ret < 0)
+ break;
+
+ ret = sbs_get_battery_property(client, ret, psp, val);
+ break;
+
+ default:
+ dev_err(&client->dev,
+ "%s: INVALID property\n", __func__);
+ return -EINVAL;
+ }
+
+ if (!chip->enable_detection)
+ goto done;
+
+ if (!chip->gpio_detect &&
+ chip->is_present != (ret >= 0)) {
+ chip->is_present = (ret >= 0);
+ power_supply_changed(&chip->power_supply);
+ }
+
+done:
+ if (!ret) {
+ /* Convert units to match requirements for power supply class */
+ sbs_unit_adjustment(client, psp, val);
+ }
+
+ dev_dbg(&client->dev,
+ "%s: property = %d, value = %x\n", __func__, psp, val->intval);
+
+ if (ret && chip->is_present)
+ return ret;
+
+ /* battery not present, so return NODATA for properties */
+ if (ret)
+ return -ENODATA;
+
+ return 0;
+}
+
+static irqreturn_t sbs_irq(int irq, void *devid)
+{
+ struct power_supply *battery = devid;
+
+ power_supply_changed(battery);
+
+ return IRQ_HANDLED;
+}
+
+static void sbs_external_power_changed(struct power_supply *psy)
+{
+ struct sbs_info *chip;
+
+ chip = container_of(psy, struct sbs_info, power_supply);
+
+ if (chip->ignore_changes > 0) {
+ chip->ignore_changes--;
+ return;
+ }
+
+ /* cancel outstanding work */
+ cancel_delayed_work_sync(&chip->work);
+
+ schedule_delayed_work(&chip->work, HZ);
+ chip->poll_time = chip->pdata->poll_retry_count;
+}
+
+static void sbs_delayed_work(struct work_struct *work)
+{
+ struct sbs_info *chip;
+ s32 ret;
+
+ chip = container_of(work, struct sbs_info, work.work);
+
+ ret = sbs_read_word_data(chip->client, sbs_data[REG_STATUS].addr);
+ /* if the read failed, give up on this work */
+ if (ret < 0) {
+ chip->poll_time = 0;
+ return;
+ }
+
+ if (ret & BATTERY_FULL_CHARGED)
+ ret = POWER_SUPPLY_STATUS_FULL;
+ else if (ret & BATTERY_FULL_DISCHARGED)
+ ret = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else if (ret & BATTERY_DISCHARGING)
+ ret = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ ret = POWER_SUPPLY_STATUS_CHARGING;
+
+ if (chip->last_state != ret) {
+ chip->poll_time = 0;
+ power_supply_changed(&chip->power_supply);
+ return;
+ }
+ if (chip->poll_time > 0) {
+ schedule_delayed_work(&chip->work, HZ);
+ chip->poll_time--;
+ return;
+ }
+}
+
+#if defined(CONFIG_OF)
+
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+
+static const struct of_device_id sbs_dt_ids[] = {
+ { .compatible = "sbs,sbs-battery" },
+ { .compatible = "ti,bq20z75" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sbs_dt_ids);
+
+static struct sbs_platform_data *sbs_of_populate_pdata(
+ struct i2c_client *client)
+{
+ struct device_node *of_node = client->dev.of_node;
+ struct sbs_platform_data *pdata = client->dev.platform_data;
+ enum of_gpio_flags gpio_flags;
+ int rc;
+ u32 prop;
+
+ /* verify this driver matches this device */
+ if (!of_node)
+ return NULL;
+
+ /* if platform data is set, honor it */
+ if (pdata)
+ return pdata;
+
+ /* first make sure at least one property is set, otherwise
+ * it won't change behavior from running without pdata.
+ */
+ if (!of_get_property(of_node, "sbs,i2c-retry-count", NULL) &&
+ !of_get_property(of_node, "sbs,poll-retry-count", NULL) &&
+ !of_get_property(of_node, "sbs,battery-detect-gpios", NULL))
+ goto of_out;
+
+ pdata = devm_kzalloc(&client->dev, sizeof(struct sbs_platform_data),
+ GFP_KERNEL);
+ if (!pdata)
+ goto of_out;
+
+ rc = of_property_read_u32(of_node, "sbs,i2c-retry-count", &prop);
+ if (!rc)
+ pdata->i2c_retry_count = prop;
+
+ rc = of_property_read_u32(of_node, "sbs,poll-retry-count", &prop);
+ if (!rc)
+ pdata->poll_retry_count = prop;
+
+ if (!of_get_property(of_node, "sbs,battery-detect-gpios", NULL)) {
+ pdata->battery_detect = -1;
+ goto of_out;
+ }
+
+ pdata->battery_detect = of_get_named_gpio_flags(of_node,
+ "sbs,battery-detect-gpios", 0, &gpio_flags);
+
+ if (gpio_flags & OF_GPIO_ACTIVE_LOW)
+ pdata->battery_detect_present = 0;
+ else
+ pdata->battery_detect_present = 1;
+
+of_out:
+ return pdata;
+}
+#else
+#define sbs_dt_ids NULL
+static struct sbs_platform_data *sbs_of_populate_pdata(
+ struct i2c_client *client)
+{
+ return client->dev.platform_data;
+}
+#endif
+
+static int __devinit sbs_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct sbs_info *chip;
+ struct sbs_platform_data *pdata = client->dev.platform_data;
+ int rc;
+ int irq;
+ char *name;
+
+ name = kasprintf(GFP_KERNEL, "sbs-%s", dev_name(&client->dev));
+ if (!name) {
+ dev_err(&client->dev, "Failed to allocate device name\n");
+ return -ENOMEM;
+ }
+
+ chip = kzalloc(sizeof(struct sbs_info), GFP_KERNEL);
+ if (!chip) {
+ rc = -ENOMEM;
+ goto exit_free_name;
+ }
+
+ chip->client = client;
+ chip->enable_detection = false;
+ chip->gpio_detect = false;
+ chip->power_supply.name = name;
+ chip->power_supply.type = POWER_SUPPLY_TYPE_BATTERY;
+ chip->power_supply.properties = sbs_properties;
+ chip->power_supply.num_properties = ARRAY_SIZE(sbs_properties);
+ chip->power_supply.get_property = sbs_get_property;
+ /* ignore first notification of external change, it is generated
+ * from the power_supply_register call back
+ */
+ chip->ignore_changes = 1;
+ chip->last_state = POWER_SUPPLY_STATUS_UNKNOWN;
+ chip->power_supply.external_power_changed = sbs_external_power_changed;
+
+ pdata = sbs_of_populate_pdata(client);
+
+ if (pdata) {
+ chip->gpio_detect = gpio_is_valid(pdata->battery_detect);
+ chip->pdata = pdata;
+ }
+
+ i2c_set_clientdata(client, chip);
+
+ if (!chip->gpio_detect)
+ goto skip_gpio;
+
+ rc = gpio_request(pdata->battery_detect, dev_name(&client->dev));
+ if (rc) {
+ dev_warn(&client->dev, "Failed to request gpio: %d\n", rc);
+ chip->gpio_detect = false;
+ goto skip_gpio;
+ }
+
+ rc = gpio_direction_input(pdata->battery_detect);
+ if (rc) {
+ dev_warn(&client->dev, "Failed to get gpio as input: %d\n", rc);
+ gpio_free(pdata->battery_detect);
+ chip->gpio_detect = false;
+ goto skip_gpio;
+ }
+
+ irq = gpio_to_irq(pdata->battery_detect);
+ if (irq <= 0) {
+ dev_warn(&client->dev, "Failed to get gpio as irq: %d\n", irq);
+ gpio_free(pdata->battery_detect);
+ chip->gpio_detect = false;
+ goto skip_gpio;
+ }
+
+ rc = request_irq(irq, sbs_irq,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ dev_name(&client->dev), &chip->power_supply);
+ if (rc) {
+ dev_warn(&client->dev, "Failed to request irq: %d\n", rc);
+ gpio_free(pdata->battery_detect);
+ chip->gpio_detect = false;
+ goto skip_gpio;
+ }
+
+ chip->irq = irq;
+
+skip_gpio:
+
+ rc = power_supply_register(&client->dev, &chip->power_supply);
+ if (rc) {
+ dev_err(&client->dev,
+ "%s: Failed to register power supply\n", __func__);
+ goto exit_psupply;
+ }
+
+ dev_info(&client->dev,
+ "%s: battery gas gauge device registered\n", client->name);
+
+ INIT_DELAYED_WORK(&chip->work, sbs_delayed_work);
+
+ chip->enable_detection = true;
+
+ return 0;
+
+exit_psupply:
+ if (chip->irq)
+ free_irq(chip->irq, &chip->power_supply);
+ if (chip->gpio_detect)
+ gpio_free(pdata->battery_detect);
+
+ kfree(chip);
+
+exit_free_name:
+ kfree(name);
+
+ return rc;
+}
+
+static int __devexit sbs_remove(struct i2c_client *client)
+{
+ struct sbs_info *chip = i2c_get_clientdata(client);
+
+ if (chip->irq)
+ free_irq(chip->irq, &chip->power_supply);
+ if (chip->gpio_detect)
+ gpio_free(chip->pdata->battery_detect);
+
+ power_supply_unregister(&chip->power_supply);
+
+ cancel_delayed_work_sync(&chip->work);
+
+ kfree(chip->power_supply.name);
+ kfree(chip);
+ chip = NULL;
+
+ return 0;
+}
+
+#if defined CONFIG_PM
+static int sbs_suspend(struct i2c_client *client,
+ pm_message_t state)
+{
+ struct sbs_info *chip = i2c_get_clientdata(client);
+ s32 ret;
+
+ if (chip->poll_time > 0)
+ cancel_delayed_work_sync(&chip->work);
+
+ /* write to manufacturer access with sleep command */
+ ret = sbs_write_word_data(client, sbs_data[REG_MANUFACTURER_DATA].addr,
+ MANUFACTURER_ACCESS_SLEEP);
+ if (chip->is_present && ret < 0)
+ return ret;
+
+ return 0;
+}
+#else
+#define sbs_suspend NULL
+#endif
+/* any smbus transaction will wake up sbs */
+#define sbs_resume NULL
+
+static const struct i2c_device_id sbs_id[] = {
+ { "bq20z75", 0 },
+ { "sbs-battery", 1 },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, sbs_id);
+
+static struct i2c_driver sbs_battery_driver = {
+ .probe = sbs_probe,
+ .remove = __devexit_p(sbs_remove),
+ .suspend = sbs_suspend,
+ .resume = sbs_resume,
+ .id_table = sbs_id,
+ .driver = {
+ .name = "sbs-battery",
+ .of_match_table = sbs_dt_ids,
+ },
+};
+module_i2c_driver(sbs_battery_driver);
+
+MODULE_DESCRIPTION("SBS battery monitor driver");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/sgm40561_charger.c b/ap/os/linux/linux-3.4.x/drivers/power/sgm40561_charger.c
new file mode 100644
index 0000000..dd60969
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/sgm40561_charger.c
@@ -0,0 +1,1003 @@
+/*
+ * Driver for the TI zx234502 battery charger.
+ *
+ * Author: Mark A. Greer <mgreer@animalcreek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/of_irq.h>
+#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/power_supply.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/kthread.h>
+//#include <linux/mutex.h>
+#include <linux/semaphore.h>
+
+#include <linux/power/sgm40561_charger.h>
+#include <linux/mfd/zx234290.h>
+
+#include <mach/gpio.h>
+#include <mach/pcu.h>
+#include <mach/zx29_usb.h>
+#include <linux/workqueue.h>
+
+#include <linux/slab.h>
+#include <linux/debugfs.h>
+#include <asm/uaccess.h>
+#include <linux/sched.h>
+
+#define USB_IN GPIO_LOW
+#define USB_OUT GPIO_HIGH
+#define CHG_START GPIO_LOW
+#define CHG_STOP GPIO_HIGH
+
+/*
+ * The FAULT register is latched by the zx234502 (except for NTC_FAULT)
+ * so the first read after a fault returns the latched value and subsequent
+ * reads return the current value. In order to return the fault status
+ * to the user, have the interrupt handler save the reg's value and retrieve
+ * it in the appropriate health/status routine. Each routine has its own
+ * flag indicating whether it should use the value stored by the last run
+ * of the interrupt handler or do an actual reg read. That way each routine
+ * can report back whatever fault may have occured.
+ */
+struct sgm40561_dev_info {
+ struct device *dev;
+ struct power_supply charger;
+ struct power_supply battery;
+
+ kernel_ulong_t model;
+ unsigned int chgin_irq;
+ unsigned int chgstate_irq;
+ struct task_struct *chgin_irq_thread;
+ struct task_struct *chgstate_irq_thread;
+
+ struct sgm40561_platform_data *pdata;
+ unsigned int chgin_type;
+ unsigned int chgstate_type;
+ bool chg_en;
+ unsigned int chg_state;
+ struct semaphore chgin_sem;
+ struct semaphore chgstate_sem;
+ int stopchg_flag;
+};
+
+volatile struct sgm40561_dev_info *g_bdi = NULL;
+
+enum
+{
+ CHG_TEMP_ERROR=0,
+ CHG_EN=1,
+ CHG_FULL_STOP=2,
+ CHG_DEFAULT,
+};
+
+
+/* Charger power supply property routines */
+
+static int sgm40561_charger_get_charge_type(struct sgm40561_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = bdi->charger.type;
+ return 0;
+}
+
+static int sgm40561_charger_get_status(struct sgm40561_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = bdi->chg_state;
+ return 0;
+}
+
+static int sgm40561_charger_get_health(struct sgm40561_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+
+ return 0;
+}
+
+int sgm40561_charger_get_online(struct sgm40561_dev_info *bdi,union power_supply_propval *val)
+{
+ if (USB_IN==bdi->chgin_type) {
+ val->intval= 1;
+ } else {
+ val->intval=0;/*usb not insert*/
+ }
+
+ return 0;
+}EXPORT_SYMBOL (sgm40561_charger_get_online);
+
+
+static int sgm40561_charger_get_charger_enabled(struct sgm40561_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = bdi->chg_en;
+
+ return 0;
+}
+static int sgm40561_charger_get_voltage_max(struct sgm40561_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = 4200;
+
+ return 0;
+}
+
+static int sgm40561_charger_set_voltage(struct sgm40561_dev_info *bdi,const union power_supply_propval *val)
+{
+ return 0;
+}
+
+static int sgm40561_charger_set_charger_config(struct sgm40561_dev_info *bdi,const union power_supply_propval *val)
+{
+ int ret;
+ int gpio_state = 0;
+
+ if (CHG_EN==val->intval){
+ gpio_state= 0 ;/*gpio low en chg*/
+ printk("mmi start chg\n");
+ }
+ else if(CHG_TEMP_ERROR==val->intval){
+ bdi->chg_state = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ gpio_state= 1 ;/*gpio high stop chg*/
+ printk("mmi stop chg\n");
+ }
+ else if(CHG_FULL_STOP == val->intval)
+ {
+ bdi->chg_state = POWER_SUPPLY_STATUS_FULL;
+ gpio_state= 1 ;/*gpio high stop chg*/
+ printk("mmi full stop chg\n");
+ }
+ else
+ printk("mmi error flag\n");
+
+ bdi->chg_en =(!gpio_state);
+ bdi->stopchg_flag = val->intval;
+
+ ret = gpio_direction_output(bdi ->pdata->gpio_chgen, gpio_state);
+
+ return ret;
+}
+
+
+static int sgm40561_charger_get_property(struct power_supply *psy,enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct sgm40561_dev_info *bdi = container_of(psy, struct sgm40561_dev_info, charger);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PC1_AC2:
+ ret = sgm40561_charger_get_charge_type(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = sgm40561_charger_get_status(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = sgm40561_charger_get_health(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = sgm40561_charger_get_online(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ ret = sgm40561_charger_get_voltage_max(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = sgm40561_charger_get_charger_enabled(bdi, val);
+ break;
+ default:
+ ret = -ENODATA;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int sgm40561_charger_set_property(struct power_supply *psy,enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct sgm40561_dev_info *bdi =
+ container_of(psy, struct sgm40561_dev_info, charger);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+#if 0
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = zx234502_charger_set_current(bdi, val);
+ break;
+#endif
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ ret = sgm40561_charger_set_voltage(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = sgm40561_charger_set_charger_config(bdi, val);
+ //power_supply_changed(&bdi->charger);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int sgm40561_charger_property_is_writeable(struct power_supply *psy,enum power_supply_property psp)
+{
+ int ret;
+
+ switch (psp)
+ {
+ //case POWER_SUPPLY_PROP_CURRENT_NOW:
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = 1;
+ break;
+ default:
+ ret = 0;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property sgm40561_charger_properties[] = {
+ POWER_SUPPLY_PROP_PC1_AC2,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_ONLINE,
+ //POWER_SUPPLY_PROP_CURRENT_NOW,
+ //POWER_SUPPLY_PROP_CURRENT_MAX,
+ //POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_CHARGE_ENABLED,
+};
+
+static char *sgm40561_charger_supplied_to[] = {
+ "main-battery",
+};
+
+static void sgm40561_charger_init(struct power_supply *charger)
+{
+ charger->name = "charger";
+ charger->type = POWER_SUPPLY_PCAC_UNKNOWN;
+ charger->properties = sgm40561_charger_properties;
+ charger->num_properties = ARRAY_SIZE(sgm40561_charger_properties);
+ charger->supplied_to = sgm40561_charger_supplied_to;
+ //charger->num_supplies = ARRAY_SIZE(sgm40561_charger_supplied_to);
+ charger->get_property = sgm40561_charger_get_property;
+ charger->set_property = sgm40561_charger_set_property;
+ charger->property_is_writeable = sgm40561_charger_property_is_writeable;
+}
+
+/* Battery power supply property routines */
+
+static int sgm40561_battery_get_health(struct sgm40561_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+
+ return 0;
+}
+
+static int sgm40561_battery_get_online(struct sgm40561_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = 1;/*bat on*/
+
+ return 0;
+}
+
+static int sgm40561_battery_set_online(struct sgm40561_dev_info *bdi,const union power_supply_propval *val)
+{
+ return 0;
+}
+
+
+static int sgm40561_battery_get_property(struct power_supply *psy,enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct sgm40561_dev_info *bdi =
+ container_of(psy, struct sgm40561_dev_info, battery);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = sgm40561_battery_get_health(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = sgm40561_battery_get_online(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = get_adc2_voltage();
+ ret = 0;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ //#ifdef CONFIG_ZX234290_ADC
+ val->intval = get_adc1_voltage() - 15;
+ ret = 0;
+ break;
+ default:
+ ret = -ENODATA;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int sgm40561_battery_set_property(struct power_supply *psy,enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct sgm40561_dev_info *bdi =
+ container_of(psy, struct sgm40561_dev_info, battery);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_put_sync(bdi->dev);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = sgm40561_battery_set_online(bdi, val);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int sgm40561_battery_property_is_writeable(struct power_supply *psy,enum power_supply_property psp)
+{
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = 1;
+ break;
+ default:
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property sgm40561_battery_properties[] = {
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ //POWER_SUPPLY_PROP_CAPACITY,
+};
+
+static void sgm40561_battery_init(struct power_supply *battery)
+{
+ battery->name = "battery";
+ battery->type = POWER_SUPPLY_PCAC_UNKNOWN;
+ battery->properties = sgm40561_battery_properties;
+ battery->num_properties = ARRAY_SIZE(sgm40561_battery_properties);
+ battery->get_property = sgm40561_battery_get_property;
+ battery->set_property = sgm40561_battery_set_property;
+ battery->property_is_writeable = sgm40561_battery_property_is_writeable;
+}
+
+
+static irqreturn_t sgm40561_charger_in_irq_primary_handler(int irq, struct sgm40561_dev_info * bdi)
+{
+ disable_irq_nosync(irq);
+ //pcu_int_clear(irq);
+ pcu_clr_irq_pending(irq);
+ up(&bdi->chgin_sem);
+
+ return IRQ_HANDLED;
+}
+static irqreturn_t sgm40561_charger_state_irq_primary_handler(int irq, struct sgm40561_dev_info * bdi)
+{
+ disable_irq_nosync(irq);
+ //pcu_int_clear(irq);
+ pcu_clr_irq_pending(irq);
+ up(&bdi->chgstate_sem);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t sgm40561_chgin_irq_handler_thread(void *data)
+{
+ struct sgm40561_dev_info *bdi = data;
+ struct sgm40561_platform_data *pdata = bdi->pdata;
+ int g_gpio_in =0;
+ int ret;
+ struct sched_param param = { .sched_priority = 2 };
+
+ param.sched_priority= 31;
+ sched_setscheduler(current, SCHED_FIFO, ¶m);
+
+ while(1)
+ {
+ down(&bdi->chgin_sem);
+
+ //printk(KERN_INFO"sgm40561_chgin_irq_handler_thread\n");
+ /*not need*/
+ #if 0
+ zx29_gpio_config(pdata->gpio_chgin, pdata->gpio_chgin_gpio_sel);
+ gpio_direction_input(pdata->gpio_chgin);
+
+ mdelay(10);
+ #endif
+ g_gpio_in = gpio_get_value(pdata->gpio_chgin);
+#if 0
+ zx29_gpio_config(pdata->gpio_chgin,pdata->gpio_chgin_fun_sel);
+#endif
+ /*charging status*/
+ if (g_gpio_in == USB_IN){
+ if (bdi->chgin_type== USB_IN){
+ printk(KERN_INFO"chg usb in err\n");
+ }
+ else{
+ bdi->chgin_type = USB_IN;
+ printk(KERN_INFO"chg usb in\n");
+ dwc_otg_chg_inform(0);/*usb in*/
+ zx29_gpio_set_inttype(pdata->gpio_chgin, IRQ_TYPE_EDGE_RISING);
+ }
+ }
+ else if (g_gpio_in == USB_OUT){
+ bdi->chg_state=POWER_SUPPLY_STATUS_DISCHARGING;
+ if (bdi->chgin_type== USB_OUT){
+ printk(KERN_INFO"chg usb out err\n");
+ }
+ else{
+ bdi->chgin_type = USB_OUT;
+ SINT32 Usb_plug = DISCONNECTED_FROM_HOST;
+ printk(KERN_INFO"chg usb out\n");
+ dwc_otg_chg_inform(1);/*usb out*/
+
+ gpio_direction_output(bdi ->pdata->gpio_chgen, 0);/*gpio low enable chg*/
+ bdi->chg_en =1;/*chg enable*/
+
+ zx29_gpio_set_inttype(pdata->gpio_chgin, IRQ_TYPE_EDGE_FALLING);
+ }
+ }
+
+ //mdelay(30); //?
+
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+
+ //pcu_clr_irq_pending((bdi->chgin_irq));
+ enable_irq(bdi->chgin_irq);
+
+ }
+
+ return 0;
+}
+
+static irqreturn_t sgm40561_chgstate_irq_handler_thread(void *data)
+{
+ struct sgm40561_dev_info *bdi = data;
+ struct sgm40561_platform_data *pdata = bdi->pdata;
+ int g_gpio_state=CHG_STOP;
+ int ret;
+ struct sched_param param = { .sched_priority = 2 };
+
+ param.sched_priority= 31;
+ sched_setscheduler(current, SCHED_FIFO, ¶m);
+
+ while(1)
+ {
+
+ down(&bdi->chgstate_sem);
+#if 0
+ zx29_gpio_config(pdata->gpio_chgstate, pdata->gpio_chgstate_gpio_sel);
+ gpio_direction_input(pdata->gpio_chgstate);
+
+ mdelay(30);
+#endif
+ g_gpio_state = gpio_get_value(pdata->gpio_chgstate);
+#if 0
+ zx29_gpio_config(pdata->gpio_chgstate,pdata->gpio_chgstate_fun_sel);
+#endif
+ /*charging status*/
+ if (g_gpio_state == CHG_START){ /*low charging*/
+ bdi->chg_state=POWER_SUPPLY_STATUS_CHARGING;
+
+ if (bdi->chgstate_type== CHG_START){
+ printk(KERN_INFO"chg chging err!\n");
+ }
+ else{
+ bdi->chgstate_type = CHG_START;
+ printk(KERN_INFO"chg charging\n");
+ zx29_gpio_set_inttype(pdata->gpio_chgstate, IRQ_TYPE_EDGE_RISING);
+ }
+ }
+ else if (g_gpio_state ==CHG_STOP){/*high stop charging*/
+ if (bdi->chgstate_type== CHG_STOP){
+ printk(KERN_INFO"chg stop err\n");
+ }
+ else if((bdi->stopchg_flag==CHG_TEMP_ERROR)&&(bdi->chgin_type== USB_IN)){
+ bdi->chg_state=POWER_SUPPLY_STATUS_NOT_CHARGING;
+ printk(KERN_INFO"chg temp stop\n");
+
+ }
+ else if (bdi->chgin_type== USB_IN){
+ bdi->chg_state=POWER_SUPPLY_STATUS_FULL;
+ printk(KERN_INFO"chg full \n");
+ }
+ else
+ bdi->chg_state=POWER_SUPPLY_STATUS_DISCHARGING;
+
+ bdi->chgstate_type = CHG_STOP;
+ printk(KERN_INFO"chg stop\n");
+ zx29_gpio_set_inttype(pdata->gpio_chgstate, IRQ_TYPE_EDGE_FALLING);
+ }
+
+ //mdelay(30); //?
+
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+
+ enable_irq(bdi->chgstate_irq);
+
+ }
+ return 0;
+}
+
+
+static int sgm40561_setup_pdata(struct sgm40561_dev_info *bdi,
+ struct sgm40561_platform_data *pdata)
+{
+ int ret;
+
+ if (!gpio_is_valid(pdata->gpio_chgen))
+ return -1;
+
+ ret = gpio_request(pdata->gpio_chgen, "gpio_chgen");
+ if (ret < 0)
+ goto out;
+ ret = zx29_gpio_config(pdata->gpio_chgen, pdata->gpio_chgen_gpio_sel);
+ if (ret < 0)
+ goto out;
+ ret = gpio_direction_output(pdata->gpio_chgen,0);
+ if (ret < 0)
+ goto out;
+ bdi->chg_en =true;
+#if 0
+ //chg termination current ctrl
+ if (!gpio_is_valid(pdata->gpio_chgctrl))
+ return -1;
+
+ ret = gpio_request(pdata->gpio_chgctrl, "gpio_chgctrl");
+ if (ret < 0)
+ goto out;
+ ret = zx29_gpio_config(pdata->gpio_chgctrl, pdata->gpio_chgctrl_gpio_sel);
+ if (ret < 0)
+ goto out;
+ ret = gpio_direction_output(pdata->gpio_chgctrl, 0);
+ if (ret < 0)
+ goto out;
+#endif
+ return 0;
+out:
+ //gpio_free(pdata->gpio_int);
+ return -1;
+}
+
+
+static int sgm40561_init_state(struct sgm40561_dev_info *bdi)
+{
+ struct sgm40561_platform_data *pdata;
+ int ret = 0;
+ unsigned int g_gpio_in,g_gpio_state;
+ unsigned int chgin_irq_type=IRQ_TYPE_NONE;
+ unsigned int chgstate_irq_type=IRQ_TYPE_NONE;
+
+ pdata= bdi->pdata;
+
+ if (!gpio_is_valid(pdata->gpio_chgin))
+ goto error;
+
+ ret = gpio_request(pdata->gpio_chgin, "gpio_chgin");
+ if (ret < 0)
+ goto error;
+
+ zx29_gpio_pd_pu_set(pdata->gpio_chgin, IO_CFG_PULL_DISABLE);
+ #if 0
+ ret = zx29_gpio_config(pdata->gpio_chgin, pdata->gpio_chgin_gpio_sel);
+ if (ret < 0)
+ goto error;
+ #endif
+ ret = gpio_direction_input(pdata->gpio_chgin);
+ if (ret < 0)
+ goto error;
+
+ mdelay(20);/*?*/
+ g_gpio_in = gpio_get_value(pdata->gpio_chgin);
+
+ if ( USB_IN == g_gpio_in){
+ bdi->chgin_type = USB_IN;
+ printk(KERN_INFO"init usb in\n");
+ chgin_irq_type = IRQ_TYPE_EDGE_RISING;
+ dwc_otg_chg_inform(0);/*usb in*/
+ }
+ else if ( USB_OUT == g_gpio_in){
+ bdi->chgin_type = USB_OUT;
+ bdi->chg_state=POWER_SUPPLY_STATUS_DISCHARGING;
+ printk(KERN_INFO"init usb out\n");
+ chgin_irq_type = IRQ_TYPE_EDGE_FALLING;
+ dwc_otg_chg_inform(1);/*usb out*/
+ }
+
+ bdi->chgin_irq= gpio_to_irq(pdata->gpio_chgin);
+
+ ret = zx29_gpio_config(pdata->gpio_chgin,pdata->gpio_chgin_fun_sel);
+ if (ret < 0)
+ goto error;
+
+ zx29_gpio_set_inttype(pdata->gpio_chgin,chgin_irq_type); //INT_POSEDGE
+ pcu_clr_irq_pending(bdi->chgin_irq);
+
+ if (!gpio_is_valid(pdata->gpio_chgstate))
+ goto error;
+
+ ret = gpio_request(pdata->gpio_chgstate, "gpio_chgin");
+ if (ret < 0)
+ goto error;
+
+ zx29_gpio_pd_pu_set(pdata->gpio_chgstate, IO_CFG_PULL_DISABLE);
+
+ bdi->chgstate_irq= gpio_to_irq(pdata->gpio_chgstate);
+#if 0
+ ret = zx29_gpio_config(pdata->gpio_chgstate, pdata->gpio_chgstate_gpio_sel);
+ if (ret < 0)
+ goto error;
+#endif
+ ret = gpio_direction_input(pdata->gpio_chgstate);
+ if (ret < 0)
+ goto error;
+ mdelay(20);/*?*/
+ g_gpio_state = gpio_get_value(pdata->gpio_chgstate);
+ bdi->stopchg_flag = CHG_DEFAULT;
+
+ if (CHG_START == g_gpio_state){
+ bdi->chgstate_type=CHG_START ;
+ bdi->chg_state=POWER_SUPPLY_STATUS_CHARGING;
+
+ //printk(KERN_INFO"send ap usb in message\n");
+ chgstate_irq_type = IRQ_TYPE_EDGE_RISING;
+ //dwc_otg_chg_inform(0);/*usb in*/
+ }
+ else if (CHG_STOP == g_gpio_state){
+ bdi->chgstate_type =CHG_STOP ;
+
+ //printk(KERN_INFO"send ap usb out message\n");
+ chgstate_irq_type = IRQ_TYPE_EDGE_FALLING;
+ //dwc_otg_chg_inform(1);/*usb out*/
+ if( bdi->chgin_type == USB_IN)
+ bdi->chg_state=POWER_SUPPLY_STATUS_FULL;
+ else
+ bdi->chg_state=POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ ret = zx29_gpio_config(pdata->gpio_chgstate,pdata->gpio_chgstate_fun_sel);
+ if (ret < 0)
+ goto error;
+
+ zx29_gpio_set_inttype(pdata->gpio_chgstate,chgstate_irq_type); //INT_POSEDGE
+
+ pcu_clr_irq_pending(bdi->chgstate_irq);
+
+error:
+ printk(KERN_INFO"chg gpio error ret = %d\n",ret);
+ return -1;
+}
+
+
+
+static void sgm40561_charge_typedet(T_TYPE_USB_DETECT chg_type)
+{
+ u8 ret;
+ #ifdef DBG_CHARGE
+ //printk(KERN_INFO"charge type is %d in\n",chg_type);
+ #endif
+
+ if(TYPE_ADAPTER == chg_type){
+ printk(KERN_INFO"chg type DC\n");
+ g_bdi->charger.type = POWER_SUPPLY_PCAC__AC;
+ }
+ else{
+ printk(KERN_INFO"chg type PC\n");
+ g_bdi->charger.type = POWER_SUPPLY_PCAC__PC;
+ }
+
+}
+
+
+#if defined(CONFIG_DEBUG_FS)
+static ssize_t debugfs_regs_write(struct file *file, const char __user *buf,size_t nbytes, loff_t *ppos)
+{
+ unsigned int val1, val2;
+ u8 reg, value;
+ int ret;
+ char *kern_buf;
+ struct seq_file *s = file->private_data;
+ struct sgm40561_dev_info *sgm40561 = s->private;
+
+ kern_buf = kzalloc(nbytes, GFP_KERNEL);
+
+ if (!kern_buf) {
+ printk(KERN_INFO "sgm40561_charger: Failed to allocate buffer\n");
+ return -ENOMEM;
+ }
+
+ if (copy_from_user(kern_buf, (void __user *)buf, nbytes)) {
+ kfree(kern_buf);
+ return -ENOMEM;
+ }
+ printk(KERN_INFO "%s input str=%s,nbytes=%d \n", __func__, kern_buf,nbytes);
+
+ ret = sscanf(kern_buf, "%x:%x", &val1, &val2);
+ if (ret < 2) {
+ printk(KERN_INFO "sgm40561_charger: failed to read user buf, ret=%d, input 0x%x:0x%x\n",
+ ret, val1, val2);
+ kfree(kern_buf);
+ return -EINVAL;
+ }
+
+ kfree(kern_buf);
+
+ return ret ? ret : nbytes;
+}
+
+static int debugfs_regs_show(struct seq_file *s, void *v)
+{
+ int i;
+ int ret=0;
+ int curr = 0;
+ struct sgm40561_dev_info *sgm40561 = s->private;
+
+ /*charger type*/
+ if(sgm40561->charger.type ==POWER_SUPPLY_PCAC__PC){
+ seq_printf(s, "charger type is PC\n");
+ }
+ else if(sgm40561->charger.type ==POWER_SUPPLY_PCAC__AC){
+ seq_printf(s, "charger type is AC\n");
+ }
+ else
+ seq_printf(s, "charger type is unknow = %d\n",sgm40561->charger.type);
+
+ seq_printf(s, "mmi charger config state = %d\n",sgm40561->chg_en);
+ seq_printf(s, "chg in state = %s\n",(sgm40561->chgin_type==USB_IN)? "USB_IN": "USB_OUT");
+ seq_printf(s, "chg_state state = %s\n",sgm40561->chgstate_type ? "CHG_STOP": "CHG_START");
+ seq_printf(s, "stop_chg_flag = %d\n",sgm40561->stopchg_flag);
+
+ return ret;
+}
+
+#define DEBUGFS_FILE_ENTRY(name) \
+static int debugfs_##name##_open(struct inode *inode, struct file *file) \
+{\
+return single_open(file, debugfs_##name##_show, inode->i_private); \
+}\
+\
+static const struct file_operations debugfs_##name##_fops = { \
+.owner= THIS_MODULE, \
+.open= debugfs_##name##_open, \
+.write=debugfs_##name##_write, \
+.read= seq_read, \
+.llseek= seq_lseek, \
+.release= single_release, \
+}
+
+DEBUGFS_FILE_ENTRY(regs);
+
+static struct dentry *g_charger_root;
+
+static void debugfs_charger_init(struct sgm40561_dev_info *sgm40561)
+{
+ struct dentry *root;
+ struct dentry *node;
+ int i;
+
+ if(!sgm40561)
+ return;
+
+ //create root
+ root = debugfs_create_dir("charger_zx29", NULL);
+ if (!root) {
+ dev_err(&sgm40561->dev, "debugfs_create_dir err=%d\n", IS_ERR(root));
+ goto err;
+ }
+
+ //print regs;
+ node = debugfs_create_file("regs", S_IRUGO | S_IWUGO, root, sgm40561, &debugfs_regs_fops);
+ if (!node){
+ dev_err(&sgm40561->dev, "debugfs_create_dir err=%d\n", IS_ERR(node));
+ goto err;
+ }
+
+ g_charger_root = (void *)root;
+ return;
+err:
+ dev_err(&sgm40561->dev, "debugfs_charger_init err\n");
+}
+
+#endif
+
+
+static int __devinit sgm40561_charger_probe(struct platform_device *pdev)
+{
+ struct sgm40561_platform_data *pdata = pdev->dev.platform_data;
+ struct device *dev = &pdev->dev;
+ struct sgm40561_dev_info *bdi;
+ int ret;
+
+ bdi = devm_kzalloc(dev, sizeof(*bdi), GFP_KERNEL);
+ if (!bdi) {
+ dev_err(dev, "Can't alloc bdi struct\n");
+ return -ENOMEM;
+ }
+ bdi->pdata = pdata;
+
+ //printk(KERN_INFO "charger probe.\n");
+
+ bdi->chg_state = POWER_SUPPLY_STATUS_UNKNOWN;
+ bdi->charger.type = POWER_SUPPLY_TYPE_UNKNOWN;
+
+ g_bdi = bdi;
+
+ ret = sgm40561_setup_pdata(bdi, pdata);
+
+ if (ret) {
+ dev_err(dev, "Can't get irq info\n");
+ return -EINVAL;
+ }
+
+ sgm40561_charger_init(&bdi->charger);
+
+ ret = power_supply_register(dev, &bdi->charger);
+ if (ret) {
+ dev_err(dev, "Can't register charger\n");
+ goto out2;
+ }
+ //printk(KERN_INFO "sgm40561_probe power_supply_register charger ok.\n");
+
+ sgm40561_battery_init(&bdi->battery);
+
+ ret = power_supply_register(dev, &bdi->battery);
+ if (ret) {
+ dev_err(dev, "Can't register battery\n");
+ goto out3;
+ }
+ //printk(KERN_INFO "sgm40561_probe power_supply_register battery ok.\n");
+ sema_init(&bdi->chgin_sem, 0);
+ sema_init(&bdi->chgstate_sem, 0);
+
+ dwc_chg_Regcallback(sgm40561_charge_typedet);/*register for usb*/
+ sgm40561_init_state(bdi);
+
+ ret = request_irq(bdi->chgin_irq, sgm40561_charger_in_irq_primary_handler,IRQF_NO_THREAD, "sgm40561-chgin", bdi);
+ if (ret < 0) {
+ dev_err(dev, "Can't set up irq handler\n");
+ if (bdi->pdata->gpio_chgin)
+ gpio_free(bdi->pdata->gpio_chgin);
+
+ goto out1;
+ }
+ irq_set_irq_wake(bdi->chgin_irq, 1);
+ bdi->chgin_irq_thread = kthread_run(sgm40561_chgin_irq_handler_thread, bdi, "sgm40561-chgin");
+ BUG_ON(IS_ERR(bdi->chgin_irq_thread));
+
+ ret = request_irq(bdi->chgstate_irq, sgm40561_charger_state_irq_primary_handler,IRQF_NO_THREAD, "sgm40561-chgstate", bdi);
+ if (ret < 0) {
+ dev_err(dev, "Can't set up irq handler\n");
+ if (bdi->pdata->gpio_chgstate)
+ gpio_free(bdi->pdata->gpio_chgin);
+
+ goto out1;
+ }
+ irq_set_irq_wake(bdi->chgstate_irq, 1);
+ bdi->chgstate_irq_thread = kthread_run(sgm40561_chgstate_irq_handler_thread, bdi, "sgm40561-chgstate");
+ BUG_ON(IS_ERR(bdi->chgstate_irq_thread));
+
+#if defined(CONFIG_DEBUG_FS)
+ debugfs_charger_init(bdi);
+#endif
+
+#ifdef DBG_CHARGE
+ //printk(KERN_INFO "sgm40561_probe end.\n");
+#endif
+
+ return 0;
+
+out3:
+ power_supply_unregister(&bdi->battery);
+out2:
+ //pm_runtime_disable(dev);
+ power_supply_unregister(&bdi->charger);
+out1:
+
+ return ret;
+
+}
+
+static int sgm40561_charger_remove(struct platform_device *pdev)
+{
+ struct sgm40561_platform_data *pdata = pdev->dev.platform_data;
+
+ power_supply_unregister(&(g_bdi->battery));
+ power_supply_unregister(&(g_bdi->charger));
+
+ pm_runtime_disable(g_bdi->dev);
+
+ if (pdata->gpio_chgctrl)
+ gpio_free(pdata->gpio_chgctrl);
+ if (pdata->gpio_chgen)
+ gpio_free(pdata->gpio_chgen);
+ if (pdata->gpio_chgin)
+ gpio_free(pdata->gpio_chgin);
+ if (pdata->gpio_chgstate)
+ gpio_free(pdata->gpio_chgstate);
+
+
+#if defined(CONFIG_DEBUG_FS)
+ if(g_charger_root){
+ //printk(KERN_INFO "sgm40561_device_exit:debugfs_remove_recursive \n");
+ debugfs_remove_recursive(g_charger_root);
+ }
+#endif
+
+ return 0;
+}
+
+
+static struct platform_driver zx29_charger_driver = {
+ .probe = sgm40561_charger_probe,
+ .remove = __devexit_p(sgm40561_charger_remove),
+ .driver = {
+ .name = "sgm40561-charger",
+ .owner = THIS_MODULE,
+ },
+};
+
+//module_platform_driver(zx29_charger_driver);
+
+
+static int __init zx29_charger_init(void)
+{
+ return platform_driver_register(&zx29_charger_driver);
+}
+
+static void __exit zx29_charger_exit(void)
+{
+ platform_driver_unregister(&zx29_charger_driver);
+}
+
+module_init(zx29_charger_init);
+module_exit(zx29_charger_exit);
+
+
+MODULE_AUTHOR("Mark A. Greer <mgreer@animalcreek.com>");
+MODULE_DESCRIPTION("SGM40561 Charger Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:zx29_charger");
+
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/smb347-charger.c b/ap/os/linux/linux-3.4.x/drivers/power/smb347-charger.c
new file mode 100644
index 0000000..fb56ec7
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/smb347-charger.c
@@ -0,0 +1,1600 @@
+/*
+ * Summit Microelectronics SMB347 Battery Charger Driver
+ *
+ * Copyright (C) 2011, Intel Corporation
+ *
+ * Authors: Bruce E. Robertson <bruce.e.robertson@intel.com>
+ * Mika Westerberg <mika.westerberg@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/debugfs.h>
+#include <linux/gpio.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+#include <linux/power_supply.h>
+#include <linux/power/smb347-charger.h>
+#include <linux/seq_file.h>
+#include <linux/delay.h>
+
+/*
+ * Configuration registers. These are mirrored to volatile RAM and can be
+ * written once %CMD_A_ALLOW_WRITE is set in %CMD_A register. They will be
+ * reloaded from non-volatile registers after POR.
+ */
+#define CFG_CHARGE_CURRENT 0x00
+#define CFG_CHARGE_CURRENT_FCC_MASK 0xe0
+#define CFG_CHARGE_CURRENT_FCC_SHIFT 5
+#define CFG_CHARGE_CURRENT_PCC_MASK 0x18
+#define CFG_CHARGE_CURRENT_PCC_SHIFT 3
+#define CFG_CHARGE_CURRENT_TC_MASK 0x07
+#define CFG_CURRENT_LIMIT 0x01
+#define CFG_CURRENT_LIMIT_DC_MASK 0xf0
+#define CFG_CURRENT_LIMIT_DC_SHIFT 4
+#define CFG_CURRENT_LIMIT_USB_MASK 0x0f
+#define CFG_VARIOUS_FUNCTION 0x02
+#define CFG_INPUT_SOURCE_PRIORITY BIT(2)
+#define CFG_FLOAT_VOLTAGE 0x03
+#define CFG_FLOAT_VOLTAGE_THRESHOLD_MASK 0xc0
+#define CFG_FLOAT_VOLTAGE_MASK 0x3F
+#define CFG_FLOAT_VOLTAGE_THRESHOLD_SHIFT 6
+#define CFG_CHARGE_CONTROL 0x04
+#define CFG_AUTOMATIC_RECHARGE_DISABLE BIT(7)
+#define CFG_STAT 0x05
+#define CFG_STAT_DISABLED BIT(5)
+#define CFG_STAT_ACTIVE_HIGH BIT(7)
+#define CFG_PIN 0x06
+#define CFG_PIN_EN_CTRL_MASK 0x60
+#define CFG_PIN_USB_MODE_CTRL BIT(4)
+#define CFG_PIN_EN_CTRL_ACTIVE_HIGH 0x40
+#define CFG_PIN_EN_CTRL_ACTIVE_LOW 0x60
+#define CFG_PIN_EN_APSD_IRQ BIT(1)
+#define CFG_PIN_EN_CHARGER_ERROR BIT(2)
+#define CFG_THERM 0x07
+#define CFG_THERM_SOFT_HOT_COMPENSATION_MASK 0x03
+#define CFG_THERM_SOFT_HOT_COMPENSATION_SHIFT 0
+#define CFG_THERM_SOFT_COLD_COMPENSATION_MASK 0x0c
+#define CFG_THERM_SOFT_COLD_COMPENSATION_SHIFT 2
+#define CFG_THERM_MONITOR_DISABLED BIT(4)
+#define CFG_SYSOK 0x08
+#define CFG_SYSOK_SUSPEND_HARD_LIMIT_DISABLED BIT(2)
+#define CFG_OTHER 0x09
+#define CFG_OTHER_RID_MASK 0xc0
+#define CFG_OTHER_RID_ENABLED_AUTO_OTG 0xc0
+#define CFG_OTG 0x0a
+#define CFG_OTG_TEMP_THRESHOLD_MASK 0x30
+#define CFG_OTG_TEMP_THRESHOLD_SHIFT 4
+#define CFG_OTG_CC_COMPENSATION_MASK 0xc0
+#define CFG_OTG_CC_COMPENSATION_SHIFT 6
+#define CFG_TEMP_LIMIT 0x0b
+#define CFG_TEMP_LIMIT_SOFT_HOT_MASK 0x03
+#define CFG_TEMP_LIMIT_SOFT_HOT_SHIFT 0
+#define CFG_TEMP_LIMIT_SOFT_COLD_MASK 0x0c
+#define CFG_TEMP_LIMIT_SOFT_COLD_SHIFT 2
+#define CFG_TEMP_LIMIT_HARD_HOT_MASK 0x30
+#define CFG_TEMP_LIMIT_HARD_HOT_SHIFT 4
+#define CFG_TEMP_LIMIT_HARD_COLD_MASK 0xc0
+#define CFG_TEMP_LIMIT_HARD_COLD_SHIFT 6
+#define CFG_FAULT_IRQ 0x0c
+#define CFG_FAULT_IRQ_DCIN_UV BIT(2)
+#define CFG_STATUS_IRQ 0x0d
+#define CFG_STATUS_IRQ_TERMINATION_OR_TAPER BIT(4)
+#define CFG_ADDRESS 0x0e
+
+/* Command registers */
+#define CMD_A 0x30
+#define CMD_A_CHG_ENABLED BIT(1)
+#define CMD_A_SUSPEND_ENABLED BIT(2)
+#define CMD_A_OTG_ENABLE BIT(4)
+#define CMD_A_ALLOW_WRITE BIT(7)
+#define CMD_B 0x31
+#define CMD_B_POR BIT(7)
+#define CMD_B_USB59_MODE BIT(1)
+#define CMD_B_HC_MODE BIT(0)
+#define CMD_C 0x33
+
+/* Interrupt Status registers */
+#define IRQSTAT_A 0x35
+#define IRQSTAT_C 0x37
+#define IRQSTAT_C_TERMINATION_STAT BIT(0)
+#define IRQSTAT_C_TERMINATION_IRQ BIT(1)
+#define IRQSTAT_C_TAPER_IRQ BIT(3)
+#define IRQSTAT_E 0x39
+#define IRQSTAT_E_USBIN_UV_STAT BIT(0)
+#define IRQSTAT_E_USBIN_UV_IRQ BIT(1)
+#define IRQSTAT_E_DCIN_UV_STAT BIT(4)
+#define IRQSTAT_E_DCIN_UV_IRQ BIT(5)
+#define IRQSTAT_F 0x3a
+
+/* Status registers */
+#define STAT_A 0x3b
+#define STAT_A_FLOAT_VOLTAGE_MASK 0x3f
+#define STAT_B 0x3c
+#define STAT_C 0x3d
+#define STAT_C_CHG_ENABLED BIT(0)
+#define STAT_C_CHG_STATUS BIT(5)
+#define STAT_C_CHG_MASK 0x06
+#define STAT_C_CHG_SHIFT 1
+#define STAT_C_CHARGER_ERROR BIT(6)
+#define STAT_E 0x3f
+
+/**
+ * struct smb347_charger - smb347 charger instance
+ * @lock: protects concurrent access to online variables
+ * @client: pointer to i2c client
+ * @mains: power_supply instance for AC/DC power
+ * @usb: power_supply instance for USB power
+ * @battery: power_supply instance for battery
+ * @mains_online: is AC/DC input connected
+ * @usb_online: is USB input connected
+ * @charging_enabled: is charging enabled
+ * @dentry: for debugfs
+ * @pdata: pointer to platform data
+ */
+struct smb347_charger {
+ struct mutex lock;
+ struct i2c_client *client;
+ struct power_supply mains;
+ struct power_supply usb;
+ struct power_supply battery;
+ bool mains_online;
+ bool usb_online;
+ bool charging_enabled;
+ unsigned int mains_current_limit;
+ bool usb_hc_mode;
+ bool usb_otg_enabled;
+ bool is_fully_charged;
+ int en_gpio;
+ struct dentry *dentry;
+ const struct smb347_charger_platform_data *pdata;
+};
+
+/* Fast charge current in uA */
+static const unsigned int fcc_tbl[] = {
+ 700000,
+ 900000,
+ 1200000,
+ 1500000,
+ 1800000,
+ 2000000,
+ 2200000,
+ 2500000,
+};
+
+/* Pre-charge current in uA */
+static const unsigned int pcc_tbl[] = {
+ 100000,
+ 150000,
+ 200000,
+ 250000,
+};
+
+/* Termination current in uA */
+static const unsigned int tc_tbl[] = {
+ 37500,
+ 50000,
+ 100000,
+ 150000,
+ 200000,
+ 250000,
+ 500000,
+ 600000,
+};
+
+/* Input current limit in uA */
+static const unsigned int icl_tbl[] = {
+ 300000,
+ 500000,
+ 700000,
+ 900000,
+ 1200000,
+ 1500000,
+ 1800000,
+ 2000000,
+ 2200000,
+ 2500000,
+};
+
+/* Charge current compensation in uA */
+static const unsigned int ccc_tbl[] = {
+ 250000,
+ 700000,
+ 900000,
+ 1200000,
+};
+
+/* Convert register value to current using lookup table */
+static int hw_to_current(const unsigned int *tbl, size_t size, unsigned int val)
+{
+ if (val >= size)
+ return -EINVAL;
+ return tbl[val];
+}
+
+/* Convert current to register value using lookup table */
+static int current_to_hw(const unsigned int *tbl, size_t size, unsigned int val)
+{
+ size_t i;
+
+ for (i = 0; i < size; i++)
+ if (val < tbl[i])
+ break;
+ return i > 0 ? i - 1 : -EINVAL;
+}
+
+static int smb347_read(struct smb347_charger *smb, u8 reg)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(smb->client, reg);
+ if (ret < 0)
+ dev_warn(&smb->client->dev, "failed to read reg 0x%x: %d\n",
+ reg, ret);
+ return ret;
+}
+
+static int smb347_write(struct smb347_charger *smb, u8 reg, u8 val)
+{
+ int ret;
+
+ ret = i2c_smbus_write_byte_data(smb->client, reg, val);
+ if (ret < 0)
+ dev_warn(&smb->client->dev, "failed to write reg 0x%x: %d\n",
+ reg, ret);
+ return ret;
+}
+
+/**
+ * smb347_update_status - updates the charging status
+ * @smb: pointer to smb347 charger instance
+ *
+ * Function checks status of the charging and updates internal state
+ * accordingly. Returns %0 if there is no change in status, %1 if the
+ * status has changed and negative errno in case of failure.
+ */
+static int smb347_update_status(struct smb347_charger *smb)
+{
+ bool usb = false;
+ bool dc = false;
+ int ret;
+
+ ret = smb347_read(smb, IRQSTAT_E);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Dc and usb are set depending on whether they are enabled in
+ * platform data _and_ whether corresponding undervoltage is set.
+ */
+ if (smb->pdata->use_mains)
+ dc = !(ret & IRQSTAT_E_DCIN_UV_STAT);
+ if (smb->pdata->use_usb)
+ usb = !(ret & IRQSTAT_E_USBIN_UV_STAT);
+
+ mutex_lock(&smb->lock);
+ ret = smb->mains_online != dc || smb->usb_online != usb;
+ smb->mains_online = dc;
+ smb->usb_online = usb;
+ mutex_unlock(&smb->lock);
+
+ return ret;
+}
+
+/*
+ * smb347_is_online - returns whether input power source is connected
+ * @smb: pointer to smb347 charger instance
+ *
+ * Returns %true if input power source is connected. Note that this is
+ * dependent on what platform has configured for usable power sources. For
+ * example if USB is disabled, this will return %false even if the USB
+ * cable is connected.
+ */
+static bool smb347_is_online(struct smb347_charger *smb)
+{
+ bool ret;
+
+ mutex_lock(&smb->lock);
+ ret = smb->usb_online || smb->mains_online;
+ mutex_unlock(&smb->lock);
+
+ return ret;
+}
+
+/**
+ * smb347_charging_status - returns status of charging
+ * @smb: pointer to smb347 charger instance
+ *
+ * Function returns charging status. %0 means no charging is in progress,
+ * %1 means pre-charging, %2 fast-charging and %3 taper-charging.
+ */
+static int smb347_charging_status(struct smb347_charger *smb)
+{
+ int ret;
+
+ if (!smb347_is_online(smb))
+ return 0;
+
+ ret = smb347_read(smb, STAT_C);
+ if (ret < 0)
+ return 0;
+
+ return (ret & STAT_C_CHG_MASK) >> STAT_C_CHG_SHIFT;
+}
+
+static int smb347_charging_set(struct smb347_charger *smb, bool enable)
+{
+ int ret = 0;
+
+ if (enable && !smb->charging_enabled)
+ smb->is_fully_charged = false;
+
+ if (smb->pdata->enable_control != SMB347_CHG_ENABLE_SW) {
+ smb->charging_enabled = enable;
+
+ if (smb->en_gpio)
+ gpio_set_value(
+ smb->en_gpio,
+ (smb->pdata->enable_control ==
+ SMB347_CHG_ENABLE_PIN_ACTIVE_LOW) ^ enable);
+ return 0;
+ }
+
+ mutex_lock(&smb->lock);
+ if (smb->charging_enabled != enable) {
+ ret = smb347_read(smb, CMD_A);
+ if (ret < 0)
+ goto out;
+
+ smb->charging_enabled = enable;
+
+ if (enable)
+ ret |= CMD_A_CHG_ENABLED;
+ else
+ ret &= ~CMD_A_CHG_ENABLED;
+
+ ret = smb347_write(smb, CMD_A, ret);
+ }
+out:
+ mutex_unlock(&smb->lock);
+ return ret;
+}
+
+static inline int smb347_charging_enable(struct smb347_charger *smb)
+{
+ return smb347_charging_set(smb, true);
+}
+
+static inline int smb347_charging_disable(struct smb347_charger *smb)
+{
+ return smb347_charging_set(smb, false);
+}
+
+static int smb347_update_online(struct smb347_charger *smb)
+{
+ int ret;
+
+ /*
+ * Depending on whether valid power source is connected or not, we
+ * disable or enable the charging. We do it manually because it
+ * depends on how the platform has configured the valid inputs.
+ */
+ if (smb347_is_online(smb)) {
+ ret = smb347_charging_enable(smb);
+ if (ret < 0)
+ dev_err(&smb->client->dev,
+ "failed to enable charging\n");
+ } else {
+ ret = smb347_charging_disable(smb);
+ if (ret < 0)
+ dev_err(&smb->client->dev,
+ "failed to disable charging\n");
+ }
+
+ return ret;
+}
+
+static int smb347_set_charge_current(struct smb347_charger *smb)
+{
+ int ret, val;
+
+ ret = smb347_read(smb, CFG_CHARGE_CURRENT);
+ if (ret < 0)
+ return ret;
+
+ if (smb->pdata->max_charge_current) {
+ val = current_to_hw(fcc_tbl, ARRAY_SIZE(fcc_tbl),
+ smb->pdata->max_charge_current);
+ if (val < 0)
+ return val;
+
+ ret &= ~CFG_CHARGE_CURRENT_FCC_MASK;
+ ret |= val << CFG_CHARGE_CURRENT_FCC_SHIFT;
+ }
+
+ if (smb->pdata->pre_charge_current) {
+ val = current_to_hw(pcc_tbl, ARRAY_SIZE(pcc_tbl),
+ smb->pdata->pre_charge_current);
+ if (val < 0)
+ return val;
+
+ ret &= ~CFG_CHARGE_CURRENT_PCC_MASK;
+ ret |= val << CFG_CHARGE_CURRENT_PCC_SHIFT;
+ }
+
+ if (smb->pdata->termination_current) {
+ val = current_to_hw(tc_tbl, ARRAY_SIZE(tc_tbl),
+ smb->pdata->termination_current);
+ if (val < 0)
+ return val;
+
+ ret &= ~CFG_CHARGE_CURRENT_TC_MASK;
+ ret |= val;
+ }
+
+ return smb347_write(smb, CFG_CHARGE_CURRENT, ret);
+}
+
+static int smb347_set_current_limits(struct smb347_charger *smb)
+{
+ int ret, val;
+
+ ret = smb347_read(smb, CFG_CURRENT_LIMIT);
+ if (ret < 0)
+ return ret;
+
+ if (smb->mains_current_limit) {
+ val = current_to_hw(icl_tbl, ARRAY_SIZE(icl_tbl),
+ smb->mains_current_limit);
+ if (val < 0)
+ return val;
+
+ ret &= ~CFG_CURRENT_LIMIT_DC_MASK;
+ ret |= val << CFG_CURRENT_LIMIT_DC_SHIFT;
+ }
+
+ if (smb->pdata->usb_hc_current_limit) {
+ val = current_to_hw(icl_tbl, ARRAY_SIZE(icl_tbl),
+ smb->pdata->usb_hc_current_limit);
+ if (val < 0)
+ return val;
+
+ ret &= ~CFG_CURRENT_LIMIT_USB_MASK;
+ ret |= val;
+ }
+
+ return smb347_write(smb, CFG_CURRENT_LIMIT, ret);
+}
+
+static int smb347_set_voltage_limits(struct smb347_charger *smb)
+{
+ int ret, val;
+
+ ret = smb347_read(smb, CFG_FLOAT_VOLTAGE);
+ if (ret < 0)
+ return ret;
+
+ if (smb->pdata->pre_to_fast_voltage) {
+ val = smb->pdata->pre_to_fast_voltage;
+
+ /* uV */
+ val = clamp_val(val, 2400000, 3000000) - 2400000;
+ val /= 200000;
+
+ ret &= ~CFG_FLOAT_VOLTAGE_THRESHOLD_MASK;
+ ret |= val << CFG_FLOAT_VOLTAGE_THRESHOLD_SHIFT;
+ }
+
+ if (smb->pdata->max_charge_voltage) {
+ val = smb->pdata->max_charge_voltage;
+
+ /* uV */
+ val = clamp_val(val, 3500000, 4500000) - 3500000;
+ val /= 20000;
+
+ ret &= ~CFG_FLOAT_VOLTAGE_MASK;
+ ret |= val;
+ }
+
+ return smb347_write(smb, CFG_FLOAT_VOLTAGE, ret);
+}
+
+static int smb347_set_temp_limits(struct smb347_charger *smb)
+{
+ bool enable_therm_monitor = false;
+ int ret, val;
+
+ if (smb->pdata->chip_temp_threshold) {
+ val = smb->pdata->chip_temp_threshold;
+
+ /* degree C */
+ val = clamp_val(val, 100, 130) - 100;
+ val /= 10;
+
+ ret = smb347_read(smb, CFG_OTG);
+ if (ret < 0)
+ return ret;
+
+ ret &= ~CFG_OTG_TEMP_THRESHOLD_MASK;
+ ret |= val << CFG_OTG_TEMP_THRESHOLD_SHIFT;
+
+ ret = smb347_write(smb, CFG_OTG, ret);
+ if (ret < 0)
+ return ret;
+ }
+
+ ret = smb347_read(smb, CFG_TEMP_LIMIT);
+ if (ret < 0)
+ return ret;
+
+ if (smb->pdata->soft_cold_temp_limit != SMB347_TEMP_USE_DEFAULT) {
+ val = smb->pdata->soft_cold_temp_limit;
+
+ val = clamp_val(val, 0, 15);
+ val /= 5;
+ /* this goes from higher to lower so invert the value */
+ val = ~val & 0x3;
+
+ ret &= ~CFG_TEMP_LIMIT_SOFT_COLD_MASK;
+ ret |= val << CFG_TEMP_LIMIT_SOFT_COLD_SHIFT;
+
+ enable_therm_monitor = true;
+ }
+
+ if (smb->pdata->soft_hot_temp_limit != SMB347_TEMP_USE_DEFAULT) {
+ val = smb->pdata->soft_hot_temp_limit;
+
+ val = clamp_val(val, 40, 55) - 40;
+ val /= 5;
+
+ ret &= ~CFG_TEMP_LIMIT_SOFT_HOT_MASK;
+ ret |= val << CFG_TEMP_LIMIT_SOFT_HOT_SHIFT;
+
+ enable_therm_monitor = true;
+ }
+
+ if (smb->pdata->hard_cold_temp_limit != SMB347_TEMP_USE_DEFAULT) {
+ val = smb->pdata->hard_cold_temp_limit;
+
+ val = clamp_val(val, -5, 10) + 5;
+ val /= 5;
+ /* this goes from higher to lower so invert the value */
+ val = ~val & 0x3;
+
+ ret &= ~CFG_TEMP_LIMIT_HARD_COLD_MASK;
+ ret |= val << CFG_TEMP_LIMIT_HARD_COLD_SHIFT;
+
+ enable_therm_monitor = true;
+ }
+
+ if (smb->pdata->hard_hot_temp_limit != SMB347_TEMP_USE_DEFAULT) {
+ val = smb->pdata->hard_hot_temp_limit;
+
+ val = clamp_val(val, 50, 65) - 50;
+ val /= 5;
+
+ ret &= ~CFG_TEMP_LIMIT_HARD_HOT_MASK;
+ ret |= val << CFG_TEMP_LIMIT_HARD_HOT_SHIFT;
+
+ enable_therm_monitor = true;
+ }
+
+ ret = smb347_write(smb, CFG_TEMP_LIMIT, ret);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * If any of the temperature limits are set, we also enable the
+ * thermistor monitoring.
+ *
+ * When soft limits are hit, the device will start to compensate
+ * current and/or voltage depending on the configuration.
+ *
+ * When hard limit is hit, the device will suspend charging
+ * depending on the configuration.
+ */
+ if (enable_therm_monitor) {
+ ret = smb347_read(smb, CFG_THERM);
+ if (ret < 0)
+ return ret;
+
+ ret &= ~CFG_THERM_MONITOR_DISABLED;
+
+ ret = smb347_write(smb, CFG_THERM, ret);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (smb->pdata->suspend_on_hard_temp_limit) {
+ ret = smb347_read(smb, CFG_SYSOK);
+ if (ret < 0)
+ return ret;
+
+ ret &= ~CFG_SYSOK_SUSPEND_HARD_LIMIT_DISABLED;
+
+ ret = smb347_write(smb, CFG_SYSOK, ret);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (smb->pdata->soft_temp_limit_compensation !=
+ SMB347_SOFT_TEMP_COMPENSATE_DEFAULT) {
+ val = smb->pdata->soft_temp_limit_compensation & 0x3;
+
+ ret = smb347_read(smb, CFG_THERM);
+ if (ret < 0)
+ return ret;
+
+ ret &= ~CFG_THERM_SOFT_HOT_COMPENSATION_MASK;
+ ret |= val << CFG_THERM_SOFT_HOT_COMPENSATION_SHIFT;
+
+ ret &= ~CFG_THERM_SOFT_COLD_COMPENSATION_MASK;
+ ret |= val << CFG_THERM_SOFT_COLD_COMPENSATION_SHIFT;
+
+ ret = smb347_write(smb, CFG_THERM, ret);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (smb->pdata->charge_current_compensation) {
+ val = current_to_hw(ccc_tbl, ARRAY_SIZE(ccc_tbl),
+ smb->pdata->charge_current_compensation);
+ if (val < 0)
+ return val;
+
+ ret = smb347_read(smb, CFG_OTG);
+ if (ret < 0)
+ return ret;
+
+ ret &= ~CFG_OTG_CC_COMPENSATION_MASK;
+ ret |= (val & 0x3) << CFG_OTG_CC_COMPENSATION_SHIFT;
+
+ ret = smb347_write(smb, CFG_OTG, ret);
+ if (ret < 0)
+ return ret;
+ }
+
+ return ret;
+}
+
+/*
+ * smb347_set_writable - enables/disables writing to non-volatile registers
+ * @smb: pointer to smb347 charger instance
+ *
+ * You can enable/disable writing to the non-volatile configuration
+ * registers by calling this function.
+ *
+ * Returns %0 on success and negative errno in case of failure.
+ */
+static int smb347_set_writable(struct smb347_charger *smb, bool writable)
+{
+ int ret;
+
+ ret = smb347_read(smb, CMD_A);
+ if (ret < 0)
+ return ret;
+
+ if (writable)
+ ret |= CMD_A_ALLOW_WRITE;
+ else
+ ret &= ~CMD_A_ALLOW_WRITE;
+
+ return smb347_write(smb, CMD_A, ret);
+}
+
+static int smb347_irq_set(struct smb347_charger *smb, bool enable)
+{
+ int ret;
+
+ ret = smb347_set_writable(smb, true);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Enable/disable interrupts for:
+ * - under voltage
+ * - termination current reached
+ * - charger error
+ */
+ if (enable) {
+ ret = smb347_write(smb, CFG_FAULT_IRQ, CFG_FAULT_IRQ_DCIN_UV);
+ if (ret < 0)
+ goto fail;
+
+ ret = smb347_write(smb, CFG_STATUS_IRQ,
+ CFG_STATUS_IRQ_TERMINATION_OR_TAPER);
+ if (ret < 0)
+ goto fail;
+
+ ret = smb347_read(smb, CFG_PIN);
+ if (ret < 0)
+ goto fail;
+
+ ret |= CFG_PIN_EN_CHARGER_ERROR;
+
+ ret = smb347_write(smb, CFG_PIN, ret);
+ } else {
+ ret = smb347_write(smb, CFG_FAULT_IRQ, 0);
+ if (ret < 0)
+ goto fail;
+
+ ret = smb347_write(smb, CFG_STATUS_IRQ, 0);
+ if (ret < 0)
+ goto fail;
+
+ ret = smb347_read(smb, CFG_PIN);
+ if (ret < 0)
+ goto fail;
+
+ ret &= ~CFG_PIN_EN_CHARGER_ERROR;
+
+ ret = smb347_write(smb, CFG_PIN, ret);
+ }
+
+fail:
+ smb347_set_writable(smb, false);
+ return ret;
+}
+
+static inline int smb347_irq_enable(struct smb347_charger *smb)
+{
+ return smb347_irq_set(smb, true);
+}
+
+static inline int smb347_irq_disable(struct smb347_charger *smb)
+{
+ return smb347_irq_set(smb, false);
+}
+
+static irqreturn_t smb347_interrupt(int irq, void *data)
+{
+ struct smb347_charger *smb = data;
+ int stat_c, t;
+ u8 irqstat[6];
+ irqreturn_t ret = IRQ_NONE;
+
+ t = i2c_smbus_read_i2c_block_data(smb->client, IRQSTAT_A, 6, irqstat);
+ if (t < 0) {
+ dev_warn(&smb->client->dev,
+ "reading IRQSTAT registers failed\n");
+ return IRQ_NONE;
+ }
+
+ stat_c = smb347_read(smb, STAT_C);
+ if (stat_c < 0) {
+ dev_warn(&smb->client->dev, "reading STAT_C failed\n");
+ return IRQ_NONE;
+ }
+
+ pr_debug("%s: stat c=%x irq a=%x b=%x c=%x d=%x e=%x f=%x\n",
+ __func__, stat_c, irqstat[0], irqstat[1], irqstat[2],
+ irqstat[3], irqstat[4], irqstat[5]);
+
+ /*
+ * If we get charger error we report the error back to user and
+ * disable charging.
+ */
+ if (stat_c & STAT_C_CHARGER_ERROR) {
+ dev_err(&smb->client->dev,
+ "error in charger, disabling charging\n");
+
+ smb347_charging_disable(smb);
+ power_supply_changed(&smb->battery);
+
+ ret = IRQ_HANDLED;
+ } else if (((stat_c & STAT_C_CHG_STATUS) ||
+ (irqstat[2] & (IRQSTAT_C_TERMINATION_IRQ |
+ IRQSTAT_C_TERMINATION_STAT))) &&
+ !smb->is_fully_charged) {
+ dev_info(&smb->client->dev, "charge terminated\n");
+ smb->is_fully_charged = true;
+ smb347_charging_disable(smb);
+ power_supply_changed(&smb->battery);
+ ret = IRQ_HANDLED;
+ }
+
+ if (irqstat[2] & IRQSTAT_C_TAPER_IRQ)
+ ret = IRQ_HANDLED;
+
+ /*
+ * If we got an under voltage interrupt it means that AC/USB input
+ * was disconnected.
+ */
+ if (irqstat[4] & (IRQSTAT_E_USBIN_UV_IRQ | IRQSTAT_E_DCIN_UV_IRQ))
+ ret = IRQ_HANDLED;
+
+ if (smb347_update_status(smb) > 0) {
+ smb347_update_online(smb);
+ power_supply_changed(&smb->mains);
+ power_supply_changed(&smb->usb);
+ ret = IRQ_HANDLED;
+ }
+
+ return ret;
+}
+
+static int smb347_irq_init(struct smb347_charger *smb)
+{
+ const struct smb347_charger_platform_data *pdata = smb->pdata;
+ int ret, irq = gpio_to_irq(pdata->irq_gpio);
+
+ ret = gpio_request_one(pdata->irq_gpio, GPIOF_IN, smb->client->name);
+ if (ret < 0)
+ goto fail;
+
+ ret = request_threaded_irq(irq, NULL, smb347_interrupt,
+ pdata->disable_stat_interrupts ?
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT :
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ smb->client->name, smb);
+ if (ret < 0)
+ goto fail_gpio;
+
+ ret = enable_irq_wake(irq);
+ if (ret)
+ pr_err("%s: failed to enable wake on irq %d\n", __func__, irq);
+
+ smb->client->irq = irq;
+ return 0;
+
+fail_gpio:
+ gpio_free(pdata->irq_gpio);
+fail:
+ smb->client->irq = 0;
+ return ret;
+}
+
+static int smb347_hw_init(struct smb347_charger *smb)
+{
+ int ret;
+
+ ret = smb347_set_writable(smb, true);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Program the platform specific configuration values to the device
+ * first.
+ */
+ ret = smb347_set_charge_current(smb);
+ if (ret < 0)
+ goto fail;
+
+ ret = smb347_set_current_limits(smb);
+ if (ret < 0)
+ goto fail;
+
+ ret = smb347_set_voltage_limits(smb);
+ if (ret < 0)
+ goto fail;
+
+// HACK for Manta pre-alpha 0.2, TH_BATTERY not connected properly
+#if 0 // HACK
+ ret = smb347_set_temp_limits(smb);
+ if (ret < 0)
+ goto fail;
+#endif // HACK
+
+ /* If USB charging is disabled we put the USB in suspend mode */
+ if (!smb->pdata->use_usb) {
+ ret = smb347_read(smb, CMD_A);
+ if (ret < 0)
+ goto fail;
+
+ ret |= CMD_A_SUSPEND_ENABLED;
+
+ ret = smb347_write(smb, CMD_A, ret);
+ if (ret < 0)
+ goto fail;
+ }
+
+ ret = smb347_read(smb, CFG_OTHER);
+ if (ret < 0)
+ goto fail;
+
+ /*
+ * If configured by platform data, we enable hardware Auto-OTG
+ * support for driving VBUS. Otherwise we disable it.
+ */
+ ret &= ~CFG_OTHER_RID_MASK;
+ if (smb->pdata->use_usb_otg)
+ ret |= CFG_OTHER_RID_ENABLED_AUTO_OTG;
+
+ ret = smb347_write(smb, CFG_OTHER, ret);
+ if (ret < 0)
+ goto fail;
+
+ /* If configured by platform data, disable AUTOMATIC RECHARGE */
+ if (smb->pdata->disable_automatic_recharge) {
+ ret = smb347_read(smb, CFG_CHARGE_CONTROL);
+ if (ret < 0)
+ goto fail;
+
+ ret |= CFG_AUTOMATIC_RECHARGE_DISABLE;
+
+ ret = smb347_write(smb, CFG_CHARGE_CONTROL, ret);
+ if (ret < 0)
+ goto fail;
+ }
+
+ ret = smb347_read(smb, CFG_PIN);
+ if (ret < 0)
+ goto fail;
+
+ /*
+ * Make the charging functionality controllable by a write to the
+ * command register unless pin control is specified in the platform
+ * data.
+ */
+ ret &= ~(CFG_PIN_EN_CTRL_MASK | CFG_PIN_USB_MODE_CTRL);
+
+ switch (smb->pdata->enable_control) {
+ case SMB347_CHG_ENABLE_SW:
+ /* Do nothing, 0 means i2c control */
+ break;
+ case SMB347_CHG_ENABLE_PIN_ACTIVE_LOW:
+ ret |= CFG_PIN_EN_CTRL_ACTIVE_LOW;
+ break;
+ case SMB347_CHG_ENABLE_PIN_ACTIVE_HIGH:
+ ret |= CFG_PIN_EN_CTRL_ACTIVE_HIGH;
+ break;
+ }
+
+ if (smb->pdata->usb_mode_pin_ctrl)
+ ret |= CFG_PIN_USB_MODE_CTRL;
+
+ /* Disable Automatic Power Source Detection (APSD) interrupt. */
+ ret &= ~CFG_PIN_EN_APSD_IRQ;
+
+ ret = smb347_write(smb, CFG_PIN, ret);
+ if (ret < 0)
+ goto fail;
+
+ ret = smb347_update_status(smb);
+ if (ret < 0)
+ goto fail;
+
+ ret = smb347_update_online(smb);
+
+ if ((smb->pdata->irq_gpio >= 0) &&
+ !smb->pdata->disable_stat_interrupts) {
+ /*
+ * Configure the STAT output to be suitable for interrupts:
+ * disable all other output (except interrupts) and make it
+ * active low.
+ */
+ ret = smb347_read(smb, CFG_STAT);
+ if (ret < 0)
+ goto fail;
+
+ ret &= ~CFG_STAT_ACTIVE_HIGH;
+ ret |= CFG_STAT_DISABLED;
+
+ ret = smb347_write(smb, CFG_STAT, ret);
+ if (ret < 0)
+ goto fail;
+
+ ret = smb347_irq_enable(smb);
+ if (ret < 0)
+ goto fail;
+ }
+
+fail:
+ smb347_set_writable(smb, false);
+ return ret;
+}
+
+static int smb347_mains_get_property(struct power_supply *psy,
+ enum power_supply_property prop,
+ union power_supply_propval *val)
+{
+ struct smb347_charger *smb =
+ container_of(psy, struct smb347_charger, mains);
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = smb->mains_online;
+ return 0;
+
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ val->intval = smb->mains_current_limit;
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+ return -EINVAL;
+}
+
+static int smb347_mains_set_property(struct power_supply *psy,
+ enum power_supply_property prop,
+ const union power_supply_propval *val)
+{
+ struct smb347_charger *smb =
+ container_of(psy, struct smb347_charger, mains);
+ int ret;
+ bool oldval;
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ oldval = smb->mains_online;
+
+ smb->mains_online = val->intval;
+
+ smb347_set_writable(smb, true);
+
+ ret = smb347_read(smb, CMD_A);
+ if (ret < 0)
+ return -EINVAL;
+
+ ret &= ~CMD_A_SUSPEND_ENABLED;
+ if (val->intval)
+ ret |= CMD_A_SUSPEND_ENABLED;
+
+ ret = smb347_write(smb, CMD_A, ret);
+
+ smb347_hw_init(smb);
+
+ smb347_set_writable(smb, false);
+
+ if (smb->mains_online != oldval)
+ power_supply_changed(psy);
+ return 0;
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ smb->mains_current_limit = val->intval;
+ smb347_hw_init(smb);
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
+}
+
+static int smb347_mains_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property prop)
+{
+ switch (prop) {
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ return 1;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property smb347_mains_properties[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_CURRENT_MAX,
+};
+
+static int smb347_usb_get_property(struct power_supply *psy,
+ enum power_supply_property prop,
+ union power_supply_propval *val)
+{
+ struct smb347_charger *smb =
+ container_of(psy, struct smb347_charger, usb);
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = smb->usb_online;
+ return 0;
+
+ case POWER_SUPPLY_PROP_USB_HC:
+ val->intval = smb->usb_hc_mode;
+ return 0;
+
+ case POWER_SUPPLY_PROP_USB_OTG:
+ val->intval = smb->usb_otg_enabled;
+ return 0;
+
+ default:
+ break;
+ }
+ return -EINVAL;
+}
+
+static int smb347_usb_set_property(struct power_supply *psy,
+ enum power_supply_property prop,
+ const union power_supply_propval *val)
+{
+ int ret = -EINVAL;
+ struct smb347_charger *smb =
+ container_of(psy, struct smb347_charger, usb);
+ bool oldval;
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ oldval = smb->usb_online;
+ smb->usb_online = val->intval;
+
+ if (smb->usb_online != oldval)
+ power_supply_changed(psy);
+ ret = 0;
+ break;
+ case POWER_SUPPLY_PROP_USB_HC:
+ smb347_set_writable(smb, true);
+ ret = smb347_write(smb, CMD_B, val->intval ?
+ CMD_B_HC_MODE : CMD_B_USB59_MODE);
+ smb347_set_writable(smb, false);
+ smb->usb_hc_mode = val->intval;
+ break;
+
+ case POWER_SUPPLY_PROP_USB_OTG:
+ ret = smb347_read(smb, CMD_A);
+
+ if (ret < 0)
+ return ret;
+
+ if (val->intval)
+ ret |= CMD_A_OTG_ENABLE;
+ else
+ ret &= ~CMD_A_OTG_ENABLE;
+
+ ret = smb347_write(smb, CMD_A, ret);
+
+ if (ret >= 0)
+ smb->usb_otg_enabled = val->intval;
+
+ break;
+
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static int smb347_usb_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property prop)
+{
+ switch (prop) {
+ case POWER_SUPPLY_PROP_USB_HC:
+ case POWER_SUPPLY_PROP_USB_OTG:
+ return 1;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property smb347_usb_properties[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_USB_HC,
+ POWER_SUPPLY_PROP_USB_OTG,
+};
+
+static int smb347_battery_get_property(struct power_supply *psy,
+ enum power_supply_property prop,
+ union power_supply_propval *val)
+{
+ struct smb347_charger *smb =
+ container_of(psy, struct smb347_charger, battery);
+ const struct smb347_charger_platform_data *pdata = smb->pdata;
+ int ret;
+
+ ret = smb347_update_status(smb);
+ if (ret < 0)
+ return ret;
+
+ if (ret > 0) {
+ smb347_update_online(smb);
+ power_supply_changed(&smb->mains);
+ power_supply_changed(&smb->usb);
+ }
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (!smb347_is_online(smb)) {
+ smb->is_fully_charged = false;
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ }
+ if (smb347_charging_status(smb))
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ val->intval = smb->is_fully_charged ?
+ POWER_SUPPLY_STATUS_FULL :
+ POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ if (!smb347_is_online(smb))
+ return -ENODATA;
+
+ /*
+ * We handle trickle and pre-charging the same, and taper
+ * and none the same.
+ */
+ switch (smb347_charging_status(smb)) {
+ case 1:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ break;
+ case 2:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ break;
+ default:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
+ }
+ break;
+
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = pdata->battery_info.technology;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = pdata->battery_info.voltage_min_design;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ val->intval = pdata->battery_info.voltage_max_design;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ if (!smb347_is_online(smb))
+ return -ENODATA;
+ ret = smb347_read(smb, STAT_A);
+ if (ret < 0)
+ return ret;
+
+ ret &= STAT_A_FLOAT_VOLTAGE_MASK;
+ if (ret > 0x3d)
+ ret = 0x3d;
+
+ val->intval = 3500000 + ret * 20000;
+ break;
+
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ if (!smb347_is_online(smb))
+ return -ENODATA;
+
+ ret = smb347_read(smb, STAT_B);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * The current value is composition of FCC and PCC values
+ * and we can detect which table to use from bit 5.
+ */
+ if (ret & 0x20) {
+ val->intval = hw_to_current(fcc_tbl,
+ ARRAY_SIZE(fcc_tbl),
+ ret & 7);
+ } else {
+ ret >>= 3;
+ val->intval = hw_to_current(pcc_tbl,
+ ARRAY_SIZE(pcc_tbl),
+ ret & 7);
+ }
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ val->intval = pdata->battery_info.charge_full_design;
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ val->intval = smb->charging_enabled;
+ break;
+
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = pdata->battery_info.name;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int smb347_battery_set_property(struct power_supply *psy,
+ enum power_supply_property prop,
+ const union power_supply_propval *val)
+{
+ int ret = -EINVAL;
+ struct smb347_charger *smb =
+ container_of(psy, struct smb347_charger, battery);
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = smb347_charging_set(smb, val->intval);
+ break;
+
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static int smb347_battery_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property prop)
+{
+ switch (prop) {
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ return 1;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property smb347_battery_properties[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_ENABLED,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+};
+
+static int smb347_debugfs_show(struct seq_file *s, void *data)
+{
+ struct smb347_charger *smb = s->private;
+ int ret;
+ u8 reg;
+
+ seq_printf(s, "Control registers:\n");
+ seq_printf(s, "==================\n");
+ for (reg = CFG_CHARGE_CURRENT; reg <= CFG_ADDRESS; reg++) {
+ ret = smb347_read(smb, reg);
+ seq_printf(s, "0x%02x:\t0x%02x\n", reg, ret);
+ }
+ seq_printf(s, "\n");
+
+ seq_printf(s, "Command registers:\n");
+ seq_printf(s, "==================\n");
+ ret = smb347_read(smb, CMD_A);
+ seq_printf(s, "0x%02x:\t0x%02x\n", CMD_A, ret);
+ ret = smb347_read(smb, CMD_B);
+ seq_printf(s, "0x%02x:\t0x%02x\n", CMD_B, ret);
+ ret = smb347_read(smb, CMD_C);
+ seq_printf(s, "0x%02x:\t0x%02x\n", CMD_C, ret);
+ seq_printf(s, "\n");
+
+ seq_printf(s, "Interrupt status registers:\n");
+ seq_printf(s, "===========================\n");
+ for (reg = IRQSTAT_A; reg <= IRQSTAT_F; reg++) {
+ ret = smb347_read(smb, reg);
+ seq_printf(s, "0x%02x:\t0x%02x\n", reg, ret);
+ }
+ seq_printf(s, "\n");
+
+ seq_printf(s, "Status registers:\n");
+ seq_printf(s, "=================\n");
+ for (reg = STAT_A; reg <= STAT_E; reg++) {
+ ret = smb347_read(smb, reg);
+ seq_printf(s, "0x%02x:\t0x%02x\n", reg, ret);
+ }
+
+ return 0;
+}
+
+static int smb347_debugfs_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, smb347_debugfs_show, inode->i_private);
+}
+
+static const struct file_operations smb347_debugfs_fops = {
+ .open = smb347_debugfs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int smb347_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ static char *battery[] = { "smb347-battery" };
+ const struct smb347_charger_platform_data *pdata;
+ struct device *dev = &client->dev;
+ struct smb347_charger *smb;
+ int ret;
+
+ pdata = dev->platform_data;
+ if (!pdata)
+ return -EINVAL;
+
+ if (!pdata->use_mains && !pdata->use_usb)
+ return -EINVAL;
+
+ smb = devm_kzalloc(dev, sizeof(*smb), GFP_KERNEL);
+ if (!smb)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, smb);
+
+ mutex_init(&smb->lock);
+ smb->client = client;
+ smb->pdata = pdata;
+
+ smb->mains_current_limit = smb->pdata->mains_current_limit;
+
+ if (pdata->en_gpio) {
+ ret = gpio_request_one(
+ pdata->en_gpio,
+ smb->pdata->enable_control ==
+ SMB347_CHG_ENABLE_PIN_ACTIVE_LOW ?
+ GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
+ smb->client->name);
+ if (ret < 0)
+ dev_warn(dev, "failed to claim EN GPIO: %d\n", ret);
+ else
+ smb->en_gpio = pdata->en_gpio;
+ }
+
+ ret = smb347_write(smb, CMD_B, CMD_B_POR);
+ if (ret < 0)
+ return ret;
+
+ msleep(20);
+
+ ret = smb347_read(smb, CMD_B);
+ if (ret < 0) {
+ dev_err(dev, "failed read after reset\n");
+ return ret;
+ }
+
+ ret = smb347_hw_init(smb);
+ if (ret < 0)
+ return ret;
+
+ smb->mains.name = "smb347-mains";
+ smb->mains.type = POWER_SUPPLY_TYPE_MAINS;
+ smb->mains.get_property = smb347_mains_get_property;
+ smb->mains.set_property = smb347_mains_set_property;
+ smb->mains.property_is_writeable = smb347_mains_property_is_writeable;
+ smb->mains.properties = smb347_mains_properties;
+ smb->mains.num_properties = ARRAY_SIZE(smb347_mains_properties);
+ smb->mains.supplied_to = battery;
+ smb->mains.num_supplicants = ARRAY_SIZE(battery);
+
+ smb->usb.name = "smb347-usb";
+ smb->usb.type = POWER_SUPPLY_TYPE_USB;
+ smb->usb.get_property = smb347_usb_get_property;
+ smb->usb.set_property = smb347_usb_set_property;
+ smb->usb.property_is_writeable = smb347_usb_property_is_writeable;
+ smb->usb.properties = smb347_usb_properties;
+ smb->usb.num_properties = ARRAY_SIZE(smb347_usb_properties);
+ smb->usb.supplied_to = battery;
+ smb->usb.num_supplicants = ARRAY_SIZE(battery);
+
+ smb->battery.name = "smb347-battery";
+ smb->battery.type = POWER_SUPPLY_TYPE_BATTERY;
+ smb->battery.get_property = smb347_battery_get_property;
+ smb->battery.set_property = smb347_battery_set_property;
+ smb->battery.property_is_writeable = smb347_battery_property_is_writeable;
+ smb->battery.properties = smb347_battery_properties;
+ smb->battery.num_properties = ARRAY_SIZE(smb347_battery_properties);
+
+ if (smb->pdata->supplied_to) {
+ smb->battery.supplied_to = smb->pdata->supplied_to;
+ smb->battery.num_supplicants = smb->pdata->num_supplicants;
+ smb->battery.external_power_changed = power_supply_changed;
+ }
+
+ ret = power_supply_register(dev, &smb->mains);
+ if (ret < 0)
+ return ret;
+
+ ret = power_supply_register(dev, &smb->usb);
+ if (ret < 0) {
+ power_supply_unregister(&smb->mains);
+ return ret;
+ }
+
+ ret = power_supply_register(dev, &smb->battery);
+ if (ret < 0) {
+ power_supply_unregister(&smb->usb);
+ power_supply_unregister(&smb->mains);
+ return ret;
+ }
+
+ /*
+ * Interrupt pin is optional. If it is connected, we setup the
+ * interrupt support here.
+ */
+ if (pdata->irq_gpio >= 0) {
+ ret = smb347_irq_init(smb);
+ if (ret < 0) {
+ dev_warn(dev, "failed to initialize IRQ: %d\n", ret);
+ dev_warn(dev, "disabling IRQ support\n");
+ }
+ }
+
+ smb->dentry = debugfs_create_file("smb347-regs", S_IRUSR, NULL, smb,
+ &smb347_debugfs_fops);
+ return 0;
+}
+
+static int smb347_remove(struct i2c_client *client)
+{
+ struct smb347_charger *smb = i2c_get_clientdata(client);
+
+ if (!IS_ERR_OR_NULL(smb->dentry))
+ debugfs_remove(smb->dentry);
+
+ if (client->irq) {
+ smb347_irq_disable(smb);
+ disable_irq_wake(client->irq);
+ free_irq(client->irq, smb);
+ gpio_free(smb->pdata->irq_gpio);
+ }
+
+ power_supply_unregister(&smb->battery);
+ power_supply_unregister(&smb->usb);
+ power_supply_unregister(&smb->mains);
+ return 0;
+}
+
+static int smb347_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+
+ if (client->irq)
+ disable_irq(client->irq);
+ return 0;
+}
+
+static int smb347_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+
+ if (client->irq)
+ enable_irq(client->irq);
+ return 0;
+}
+
+static const struct dev_pm_ops smb347_pm_ops = {
+ .suspend = smb347_suspend,
+ .resume = smb347_resume,
+};
+
+static const struct i2c_device_id smb347_id[] = {
+ { "smb347", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, smb347_id);
+
+static struct i2c_driver smb347_driver = {
+ .driver = {
+ .name = "smb347",
+ .pm = &smb347_pm_ops,
+ },
+ .probe = smb347_probe,
+ .remove = __devexit_p(smb347_remove),
+ .id_table = smb347_id,
+};
+
+static int __init smb347_init(void)
+{
+ return i2c_add_driver(&smb347_driver);
+}
+module_init(smb347_init);
+
+static void __exit smb347_exit(void)
+{
+ i2c_del_driver(&smb347_driver);
+}
+module_exit(smb347_exit);
+
+MODULE_AUTHOR("Bruce E. Robertson <bruce.e.robertson@intel.com>");
+MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
+MODULE_DESCRIPTION("SMB347 battery charger driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("i2c:smb347");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/test_power.c b/ap/os/linux/linux-3.4.x/drivers/power/test_power.c
new file mode 100644
index 0000000..b527c93
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/test_power.c
@@ -0,0 +1,419 @@
+/*
+ * Power supply driver for testing.
+ *
+ * Copyright 2010 Anton Vorontsov <cbouatmailru@gmail.com>
+ *
+ * Dynamic module parameter code from the Virtual Battery Driver
+ * Copyright (C) 2008 Pylone, Inc.
+ * By: Masashi YOKOTA <yokota@pylone.jp>
+ * Originally found here:
+ * http://downloads.pylone.jp/src/virtual_battery/virtual_battery-0.0.1.tar.bz2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/power_supply.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/vermagic.h>
+
+static int ac_online = 1;
+static int battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
+static int battery_health = POWER_SUPPLY_HEALTH_GOOD;
+static int battery_present = 1; /* true */
+static int battery_technology = POWER_SUPPLY_TECHNOLOGY_LION;
+static int battery_capacity = 50;
+
+static int test_power_get_ac_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = ac_online;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int test_power_get_battery_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = "Test battery";
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = "Linux";
+ break;
+ case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+ val->strval = UTS_RELEASE;
+ break;
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = battery_status;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ val->intval = battery_health;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = battery_present;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = battery_technology;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ val->intval = battery_capacity;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ val->intval = 100;
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+ case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
+ val->intval = 3600;
+ break;
+ default:
+ pr_info("%s: some properties deliberately report errors.\n",
+ __func__);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static enum power_supply_property test_power_ac_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static enum power_supply_property test_power_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
+ POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
+};
+
+static char *test_power_ac_supplied_to[] = {
+ "test_battery",
+};
+
+static struct power_supply test_power_supplies[] = {
+ {
+ .name = "test_ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .supplied_to = test_power_ac_supplied_to,
+ .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
+ .properties = test_power_ac_props,
+ .num_properties = ARRAY_SIZE(test_power_ac_props),
+ .get_property = test_power_get_ac_property,
+ }, {
+ .name = "test_battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = test_power_battery_props,
+ .num_properties = ARRAY_SIZE(test_power_battery_props),
+ .get_property = test_power_get_battery_property,
+ },
+};
+
+
+static int __init test_power_init(void)
+{
+ int i;
+ int ret;
+
+ for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
+ ret = power_supply_register(NULL, &test_power_supplies[i]);
+ if (ret) {
+ pr_err("%s: failed to register %s\n", __func__,
+ test_power_supplies[i].name);
+ goto failed;
+ }
+ }
+
+ return 0;
+failed:
+ while (--i >= 0)
+ power_supply_unregister(&test_power_supplies[i]);
+ return ret;
+}
+module_init(test_power_init);
+
+static void __exit test_power_exit(void)
+{
+ int i;
+
+ /* Let's see how we handle changes... */
+ ac_online = 0;
+ battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
+ for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
+ power_supply_changed(&test_power_supplies[i]);
+ pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n",
+ __func__);
+ ssleep(10);
+
+ for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
+ power_supply_unregister(&test_power_supplies[i]);
+}
+module_exit(test_power_exit);
+
+
+
+#define MAX_KEYLENGTH 256
+struct battery_property_map {
+ int value;
+ char const *key;
+};
+
+static struct battery_property_map map_ac_online[] = {
+ { 0, "on" },
+ { 1, "off" },
+ { -1, NULL },
+};
+
+static struct battery_property_map map_status[] = {
+ { POWER_SUPPLY_STATUS_CHARGING, "charging" },
+ { POWER_SUPPLY_STATUS_DISCHARGING, "discharging" },
+ { POWER_SUPPLY_STATUS_NOT_CHARGING, "not-charging" },
+ { POWER_SUPPLY_STATUS_FULL, "full" },
+ { -1, NULL },
+};
+
+static struct battery_property_map map_health[] = {
+ { POWER_SUPPLY_HEALTH_GOOD, "good" },
+ { POWER_SUPPLY_HEALTH_OVERHEAT, "overheat" },
+ { POWER_SUPPLY_HEALTH_DEAD, "dead" },
+ { POWER_SUPPLY_HEALTH_OVERVOLTAGE, "overvoltage" },
+ { POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, "failure" },
+ { -1, NULL },
+};
+
+static struct battery_property_map map_present[] = {
+ { 0, "false" },
+ { 1, "true" },
+ { -1, NULL },
+};
+
+static struct battery_property_map map_technology[] = {
+ { POWER_SUPPLY_TECHNOLOGY_NiMH, "NiMH" },
+ { POWER_SUPPLY_TECHNOLOGY_LION, "LION" },
+ { POWER_SUPPLY_TECHNOLOGY_LIPO, "LIPO" },
+ { POWER_SUPPLY_TECHNOLOGY_LiFe, "LiFe" },
+ { POWER_SUPPLY_TECHNOLOGY_NiCd, "NiCd" },
+ { POWER_SUPPLY_TECHNOLOGY_LiMn, "LiMn" },
+ { -1, NULL },
+};
+
+
+static int map_get_value(struct battery_property_map *map, const char *key,
+ int def_val)
+{
+ char buf[MAX_KEYLENGTH];
+ int cr;
+
+ strncpy(buf, key, MAX_KEYLENGTH);
+ buf[MAX_KEYLENGTH-1] = '\0';
+
+ cr = strnlen(buf, MAX_KEYLENGTH) - 1;
+ if (buf[cr] == '\n')
+ buf[cr] = '\0';
+
+ while (map->key) {
+ if (strncasecmp(map->key, buf, MAX_KEYLENGTH) == 0)
+ return map->value;
+ map++;
+ }
+
+ return def_val;
+}
+
+
+static const char *map_get_key(struct battery_property_map *map, int value,
+ const char *def_key)
+{
+ while (map->key) {
+ if (map->value == value)
+ return map->key;
+ map++;
+ }
+
+ return def_key;
+}
+
+static int param_set_ac_online(const char *key, const struct kernel_param *kp)
+{
+ ac_online = map_get_value(map_ac_online, key, ac_online);
+ power_supply_changed(&test_power_supplies[0]);
+ return 0;
+}
+
+static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
+{
+ strcpy(buffer, map_get_key(map_ac_online, ac_online, "unknown"));
+ return strlen(buffer);
+}
+
+static int param_set_battery_status(const char *key,
+ const struct kernel_param *kp)
+{
+ battery_status = map_get_value(map_status, key, battery_status);
+ power_supply_changed(&test_power_supplies[1]);
+ return 0;
+}
+
+static int param_get_battery_status(char *buffer, const struct kernel_param *kp)
+{
+ strcpy(buffer, map_get_key(map_status, battery_status, "unknown"));
+ return strlen(buffer);
+}
+
+static int param_set_battery_health(const char *key,
+ const struct kernel_param *kp)
+{
+ battery_health = map_get_value(map_health, key, battery_health);
+ power_supply_changed(&test_power_supplies[1]);
+ return 0;
+}
+
+static int param_get_battery_health(char *buffer, const struct kernel_param *kp)
+{
+ strcpy(buffer, map_get_key(map_health, battery_health, "unknown"));
+ return strlen(buffer);
+}
+
+static int param_set_battery_present(const char *key,
+ const struct kernel_param *kp)
+{
+ battery_present = map_get_value(map_present, key, battery_present);
+ power_supply_changed(&test_power_supplies[0]);
+ return 0;
+}
+
+static int param_get_battery_present(char *buffer,
+ const struct kernel_param *kp)
+{
+ strcpy(buffer, map_get_key(map_present, battery_present, "unknown"));
+ return strlen(buffer);
+}
+
+static int param_set_battery_technology(const char *key,
+ const struct kernel_param *kp)
+{
+ battery_technology = map_get_value(map_technology, key,
+ battery_technology);
+ power_supply_changed(&test_power_supplies[1]);
+ return 0;
+}
+
+static int param_get_battery_technology(char *buffer,
+ const struct kernel_param *kp)
+{
+ strcpy(buffer,
+ map_get_key(map_technology, battery_technology, "unknown"));
+ return strlen(buffer);
+}
+
+static int param_set_battery_capacity(const char *key,
+ const struct kernel_param *kp)
+{
+ int tmp;
+
+ if (1 != sscanf(key, "%d", &tmp))
+ return -EINVAL;
+
+ battery_capacity = tmp;
+ power_supply_changed(&test_power_supplies[1]);
+ return 0;
+}
+
+#define param_get_battery_capacity param_get_int
+
+
+
+static struct kernel_param_ops param_ops_ac_online = {
+ .set = param_set_ac_online,
+ .get = param_get_ac_online,
+};
+
+static struct kernel_param_ops param_ops_battery_status = {
+ .set = param_set_battery_status,
+ .get = param_get_battery_status,
+};
+
+static struct kernel_param_ops param_ops_battery_present = {
+ .set = param_set_battery_present,
+ .get = param_get_battery_present,
+};
+
+static struct kernel_param_ops param_ops_battery_technology = {
+ .set = param_set_battery_technology,
+ .get = param_get_battery_technology,
+};
+
+static struct kernel_param_ops param_ops_battery_health = {
+ .set = param_set_battery_health,
+ .get = param_get_battery_health,
+};
+
+static struct kernel_param_ops param_ops_battery_capacity = {
+ .set = param_set_battery_capacity,
+ .get = param_get_battery_capacity,
+};
+
+
+#define param_check_ac_online(name, p) __param_check(name, p, void);
+#define param_check_battery_status(name, p) __param_check(name, p, void);
+#define param_check_battery_present(name, p) __param_check(name, p, void);
+#define param_check_battery_technology(name, p) __param_check(name, p, void);
+#define param_check_battery_health(name, p) __param_check(name, p, void);
+#define param_check_battery_capacity(name, p) __param_check(name, p, void);
+
+
+module_param(ac_online, ac_online, 0644);
+MODULE_PARM_DESC(ac_online, "AC charging state <on|off>");
+
+module_param(battery_status, battery_status, 0644);
+MODULE_PARM_DESC(battery_status,
+ "battery status <charging|discharging|not-charging|full>");
+
+module_param(battery_present, battery_present, 0644);
+MODULE_PARM_DESC(battery_present,
+ "battery presence state <good|overheat|dead|overvoltage|failure>");
+
+module_param(battery_technology, battery_technology, 0644);
+MODULE_PARM_DESC(battery_technology,
+ "battery technology <NiMH|LION|LIPO|LiFe|NiCd|LiMn>");
+
+module_param(battery_health, battery_health, 0644);
+MODULE_PARM_DESC(battery_health,
+ "battery health state <good|overheat|dead|overvoltage|failure>");
+
+module_param(battery_capacity, battery_capacity, 0644);
+MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)");
+
+
+MODULE_DESCRIPTION("Power supply driver for testing");
+MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/tosa_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/tosa_battery.c
new file mode 100644
index 0000000..28bbe7e
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/tosa_battery.c
@@ -0,0 +1,446 @@
+/*
+ * Battery and Power Management code for the Sharp SL-6000x
+ *
+ * Copyright (c) 2005 Dirk Opfer
+ * Copyright (c) 2008 Dmitry Baryshkov
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/power_supply.h>
+#include <linux/wm97xx.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-types.h>
+#include <mach/tosa.h>
+
+static DEFINE_MUTEX(bat_lock); /* protects gpio pins */
+static struct work_struct bat_work;
+
+struct tosa_bat {
+ int status;
+ struct power_supply psy;
+ int full_chrg;
+
+ struct mutex work_lock; /* protects data */
+
+ bool (*is_present)(struct tosa_bat *bat);
+ int gpio_full;
+ int gpio_charge_off;
+
+ int technology;
+
+ int gpio_bat;
+ int adc_bat;
+ int adc_bat_divider;
+ int bat_max;
+ int bat_min;
+
+ int gpio_temp;
+ int adc_temp;
+ int adc_temp_divider;
+};
+
+static struct tosa_bat tosa_bat_main;
+static struct tosa_bat tosa_bat_jacket;
+
+static unsigned long tosa_read_bat(struct tosa_bat *bat)
+{
+ unsigned long value = 0;
+
+ if (bat->gpio_bat < 0 || bat->adc_bat < 0)
+ return 0;
+
+ mutex_lock(&bat_lock);
+ gpio_set_value(bat->gpio_bat, 1);
+ msleep(5);
+ value = wm97xx_read_aux_adc(dev_get_drvdata(bat->psy.dev->parent),
+ bat->adc_bat);
+ gpio_set_value(bat->gpio_bat, 0);
+ mutex_unlock(&bat_lock);
+
+ value = value * 1000000 / bat->adc_bat_divider;
+
+ return value;
+}
+
+static unsigned long tosa_read_temp(struct tosa_bat *bat)
+{
+ unsigned long value = 0;
+
+ if (bat->gpio_temp < 0 || bat->adc_temp < 0)
+ return 0;
+
+ mutex_lock(&bat_lock);
+ gpio_set_value(bat->gpio_temp, 1);
+ msleep(5);
+ value = wm97xx_read_aux_adc(dev_get_drvdata(bat->psy.dev->parent),
+ bat->adc_temp);
+ gpio_set_value(bat->gpio_temp, 0);
+ mutex_unlock(&bat_lock);
+
+ value = value * 10000 / bat->adc_temp_divider;
+
+ return value;
+}
+
+static int tosa_bat_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ struct tosa_bat *bat = container_of(psy, struct tosa_bat, psy);
+
+ if (bat->is_present && !bat->is_present(bat)
+ && psp != POWER_SUPPLY_PROP_PRESENT) {
+ return -ENODEV;
+ }
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = bat->status;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = bat->technology;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = tosa_read_bat(bat);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ if (bat->full_chrg == -1)
+ val->intval = bat->bat_max;
+ else
+ val->intval = bat->full_chrg;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ val->intval = bat->bat_max;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = bat->bat_min;
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = tosa_read_temp(bat);
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = bat->is_present ? bat->is_present(bat) : 1;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static bool tosa_jacket_bat_is_present(struct tosa_bat *bat)
+{
+ return gpio_get_value(TOSA_GPIO_JACKET_DETECT) == 0;
+}
+
+static void tosa_bat_external_power_changed(struct power_supply *psy)
+{
+ schedule_work(&bat_work);
+}
+
+static irqreturn_t tosa_bat_gpio_isr(int irq, void *data)
+{
+ pr_info("tosa_bat_gpio irq: %d\n", gpio_get_value(irq_to_gpio(irq)));
+ schedule_work(&bat_work);
+ return IRQ_HANDLED;
+}
+
+static void tosa_bat_update(struct tosa_bat *bat)
+{
+ int old;
+ struct power_supply *psy = &bat->psy;
+
+ mutex_lock(&bat->work_lock);
+
+ old = bat->status;
+
+ if (bat->is_present && !bat->is_present(bat)) {
+ printk(KERN_NOTICE "%s not present\n", psy->name);
+ bat->status = POWER_SUPPLY_STATUS_UNKNOWN;
+ bat->full_chrg = -1;
+ } else if (power_supply_am_i_supplied(psy)) {
+ if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) {
+ gpio_set_value(bat->gpio_charge_off, 0);
+ mdelay(15);
+ }
+
+ if (gpio_get_value(bat->gpio_full)) {
+ if (old == POWER_SUPPLY_STATUS_CHARGING ||
+ bat->full_chrg == -1)
+ bat->full_chrg = tosa_read_bat(bat);
+
+ gpio_set_value(bat->gpio_charge_off, 1);
+ bat->status = POWER_SUPPLY_STATUS_FULL;
+ } else {
+ gpio_set_value(bat->gpio_charge_off, 0);
+ bat->status = POWER_SUPPLY_STATUS_CHARGING;
+ }
+ } else {
+ gpio_set_value(bat->gpio_charge_off, 1);
+ bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ if (old != bat->status)
+ power_supply_changed(psy);
+
+ mutex_unlock(&bat->work_lock);
+}
+
+static void tosa_bat_work(struct work_struct *work)
+{
+ tosa_bat_update(&tosa_bat_main);
+ tosa_bat_update(&tosa_bat_jacket);
+}
+
+
+static enum power_supply_property tosa_bat_main_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_PRESENT,
+};
+
+static enum power_supply_property tosa_bat_bu_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_PRESENT,
+};
+
+static struct tosa_bat tosa_bat_main = {
+ .status = POWER_SUPPLY_STATUS_DISCHARGING,
+ .full_chrg = -1,
+ .psy = {
+ .name = "main-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = tosa_bat_main_props,
+ .num_properties = ARRAY_SIZE(tosa_bat_main_props),
+ .get_property = tosa_bat_get_property,
+ .external_power_changed = tosa_bat_external_power_changed,
+ .use_for_apm = 1,
+ },
+
+ .gpio_full = TOSA_GPIO_BAT0_CRG,
+ .gpio_charge_off = TOSA_GPIO_CHARGE_OFF,
+
+ .technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
+
+ .gpio_bat = TOSA_GPIO_BAT0_V_ON,
+ .adc_bat = WM97XX_AUX_ID3,
+ .adc_bat_divider = 414,
+ .bat_max = 4310000,
+ .bat_min = 1551 * 1000000 / 414,
+
+ .gpio_temp = TOSA_GPIO_BAT1_TH_ON,
+ .adc_temp = WM97XX_AUX_ID2,
+ .adc_temp_divider = 10000,
+};
+
+static struct tosa_bat tosa_bat_jacket = {
+ .status = POWER_SUPPLY_STATUS_DISCHARGING,
+ .full_chrg = -1,
+ .psy = {
+ .name = "jacket-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = tosa_bat_main_props,
+ .num_properties = ARRAY_SIZE(tosa_bat_main_props),
+ .get_property = tosa_bat_get_property,
+ .external_power_changed = tosa_bat_external_power_changed,
+ },
+
+ .is_present = tosa_jacket_bat_is_present,
+ .gpio_full = TOSA_GPIO_BAT1_CRG,
+ .gpio_charge_off = TOSA_GPIO_CHARGE_OFF_JC,
+
+ .technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
+
+ .gpio_bat = TOSA_GPIO_BAT1_V_ON,
+ .adc_bat = WM97XX_AUX_ID3,
+ .adc_bat_divider = 414,
+ .bat_max = 4310000,
+ .bat_min = 1551 * 1000000 / 414,
+
+ .gpio_temp = TOSA_GPIO_BAT0_TH_ON,
+ .adc_temp = WM97XX_AUX_ID2,
+ .adc_temp_divider = 10000,
+};
+
+static struct tosa_bat tosa_bat_bu = {
+ .status = POWER_SUPPLY_STATUS_UNKNOWN,
+ .full_chrg = -1,
+
+ .psy = {
+ .name = "backup-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = tosa_bat_bu_props,
+ .num_properties = ARRAY_SIZE(tosa_bat_bu_props),
+ .get_property = tosa_bat_get_property,
+ .external_power_changed = tosa_bat_external_power_changed,
+ },
+
+ .gpio_full = -1,
+ .gpio_charge_off = -1,
+
+ .technology = POWER_SUPPLY_TECHNOLOGY_LiMn,
+
+ .gpio_bat = TOSA_GPIO_BU_CHRG_ON,
+ .adc_bat = WM97XX_AUX_ID4,
+ .adc_bat_divider = 1266,
+
+ .gpio_temp = -1,
+ .adc_temp = -1,
+ .adc_temp_divider = -1,
+};
+
+static struct gpio tosa_bat_gpios[] = {
+ { TOSA_GPIO_CHARGE_OFF, GPIOF_OUT_INIT_HIGH, "main charge off" },
+ { TOSA_GPIO_CHARGE_OFF_JC, GPIOF_OUT_INIT_HIGH, "jacket charge off" },
+ { TOSA_GPIO_BAT_SW_ON, GPIOF_OUT_INIT_LOW, "battery switch" },
+ { TOSA_GPIO_BAT0_V_ON, GPIOF_OUT_INIT_LOW, "main battery" },
+ { TOSA_GPIO_BAT1_V_ON, GPIOF_OUT_INIT_LOW, "jacket battery" },
+ { TOSA_GPIO_BAT1_TH_ON, GPIOF_OUT_INIT_LOW, "main battery temp" },
+ { TOSA_GPIO_BAT0_TH_ON, GPIOF_OUT_INIT_LOW, "jacket battery temp" },
+ { TOSA_GPIO_BU_CHRG_ON, GPIOF_OUT_INIT_LOW, "backup battery" },
+ { TOSA_GPIO_BAT0_CRG, GPIOF_IN, "main battery full" },
+ { TOSA_GPIO_BAT1_CRG, GPIOF_IN, "jacket battery full" },
+ { TOSA_GPIO_BAT0_LOW, GPIOF_IN, "main battery low" },
+ { TOSA_GPIO_BAT1_LOW, GPIOF_IN, "jacket battery low" },
+ { TOSA_GPIO_JACKET_DETECT, GPIOF_IN, "jacket detect" },
+};
+
+#ifdef CONFIG_PM
+static int tosa_bat_suspend(struct platform_device *dev, pm_message_t state)
+{
+ /* flush all pending status updates */
+ flush_work_sync(&bat_work);
+ return 0;
+}
+
+static int tosa_bat_resume(struct platform_device *dev)
+{
+ /* things may have changed while we were away */
+ schedule_work(&bat_work);
+ return 0;
+}
+#else
+#define tosa_bat_suspend NULL
+#define tosa_bat_resume NULL
+#endif
+
+static int __devinit tosa_bat_probe(struct platform_device *dev)
+{
+ int ret;
+
+ if (!machine_is_tosa())
+ return -ENODEV;
+
+ ret = gpio_request_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
+ if (ret)
+ return ret;
+
+ mutex_init(&tosa_bat_main.work_lock);
+ mutex_init(&tosa_bat_jacket.work_lock);
+
+ INIT_WORK(&bat_work, tosa_bat_work);
+
+ ret = power_supply_register(&dev->dev, &tosa_bat_main.psy);
+ if (ret)
+ goto err_psy_reg_main;
+ ret = power_supply_register(&dev->dev, &tosa_bat_jacket.psy);
+ if (ret)
+ goto err_psy_reg_jacket;
+ ret = power_supply_register(&dev->dev, &tosa_bat_bu.psy);
+ if (ret)
+ goto err_psy_reg_bu;
+
+ ret = request_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG),
+ tosa_bat_gpio_isr,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "main full", &tosa_bat_main);
+ if (ret)
+ goto err_req_main;
+
+ ret = request_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG),
+ tosa_bat_gpio_isr,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "jacket full", &tosa_bat_jacket);
+ if (ret)
+ goto err_req_jacket;
+
+ ret = request_irq(gpio_to_irq(TOSA_GPIO_JACKET_DETECT),
+ tosa_bat_gpio_isr,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "jacket detect", &tosa_bat_jacket);
+ if (!ret) {
+ schedule_work(&bat_work);
+ return 0;
+ }
+
+ free_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG), &tosa_bat_jacket);
+err_req_jacket:
+ free_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), &tosa_bat_main);
+err_req_main:
+ power_supply_unregister(&tosa_bat_bu.psy);
+err_psy_reg_bu:
+ power_supply_unregister(&tosa_bat_jacket.psy);
+err_psy_reg_jacket:
+ power_supply_unregister(&tosa_bat_main.psy);
+err_psy_reg_main:
+
+ /* see comment in tosa_bat_remove */
+ cancel_work_sync(&bat_work);
+
+ gpio_free_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
+ return ret;
+}
+
+static int __devexit tosa_bat_remove(struct platform_device *dev)
+{
+ free_irq(gpio_to_irq(TOSA_GPIO_JACKET_DETECT), &tosa_bat_jacket);
+ free_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG), &tosa_bat_jacket);
+ free_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), &tosa_bat_main);
+
+ power_supply_unregister(&tosa_bat_bu.psy);
+ power_supply_unregister(&tosa_bat_jacket.psy);
+ power_supply_unregister(&tosa_bat_main.psy);
+
+ /*
+ * Now cancel the bat_work. We won't get any more schedules,
+ * since all sources (isr and external_power_changed) are
+ * unregistered now.
+ */
+ cancel_work_sync(&bat_work);
+ gpio_free_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
+ return 0;
+}
+
+static struct platform_driver tosa_bat_driver = {
+ .driver.name = "wm97xx-battery",
+ .driver.owner = THIS_MODULE,
+ .probe = tosa_bat_probe,
+ .remove = __devexit_p(tosa_bat_remove),
+ .suspend = tosa_bat_suspend,
+ .resume = tosa_bat_resume,
+};
+
+module_platform_driver(tosa_bat_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Dmitry Baryshkov");
+MODULE_DESCRIPTION("Tosa battery driver");
+MODULE_ALIAS("platform:wm97xx-battery");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/twl4030_charger.c b/ap/os/linux/linux-3.4.x/drivers/power/twl4030_charger.c
new file mode 100644
index 0000000..fdad850
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/twl4030_charger.c
@@ -0,0 +1,578 @@
+/*
+ * TWL4030/TPS65950 BCI (Battery Charger Interface) driver
+ *
+ * Copyright (C) 2010 Gražvydas Ignotas <notasas@gmail.com>
+ *
+ * based on twl4030_bci_battery.c by TI
+ * Copyright (C) 2008 Texas Instruments, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/i2c/twl.h>
+#include <linux/power_supply.h>
+#include <linux/notifier.h>
+#include <linux/usb/otg.h>
+
+#define TWL4030_BCIMSTATEC 0x02
+#define TWL4030_BCIICHG 0x08
+#define TWL4030_BCIVAC 0x0a
+#define TWL4030_BCIVBUS 0x0c
+#define TWL4030_BCIMFSTS4 0x10
+#define TWL4030_BCICTL1 0x23
+
+#define TWL4030_BCIAUTOWEN BIT(5)
+#define TWL4030_CONFIG_DONE BIT(4)
+#define TWL4030_BCIAUTOUSB BIT(1)
+#define TWL4030_BCIAUTOAC BIT(0)
+#define TWL4030_CGAIN BIT(5)
+#define TWL4030_USBFASTMCHG BIT(2)
+#define TWL4030_STS_VBUS BIT(7)
+#define TWL4030_STS_USB_ID BIT(2)
+
+/* BCI interrupts */
+#define TWL4030_WOVF BIT(0) /* Watchdog overflow */
+#define TWL4030_TMOVF BIT(1) /* Timer overflow */
+#define TWL4030_ICHGHIGH BIT(2) /* Battery charge current high */
+#define TWL4030_ICHGLOW BIT(3) /* Battery cc. low / FSM state change */
+#define TWL4030_ICHGEOC BIT(4) /* Battery current end-of-charge */
+#define TWL4030_TBATOR2 BIT(5) /* Battery temperature out of range 2 */
+#define TWL4030_TBATOR1 BIT(6) /* Battery temperature out of range 1 */
+#define TWL4030_BATSTS BIT(7) /* Battery status */
+
+#define TWL4030_VBATLVL BIT(0) /* VBAT level */
+#define TWL4030_VBATOV BIT(1) /* VBAT overvoltage */
+#define TWL4030_VBUSOV BIT(2) /* VBUS overvoltage */
+#define TWL4030_ACCHGOV BIT(3) /* Ac charger overvoltage */
+
+#define TWL4030_MSTATEC_USB BIT(4)
+#define TWL4030_MSTATEC_AC BIT(5)
+#define TWL4030_MSTATEC_MASK 0x0f
+#define TWL4030_MSTATEC_QUICK1 0x02
+#define TWL4030_MSTATEC_QUICK7 0x07
+#define TWL4030_MSTATEC_COMPLETE1 0x0b
+#define TWL4030_MSTATEC_COMPLETE4 0x0e
+
+static bool allow_usb;
+module_param(allow_usb, bool, 0644);
+MODULE_PARM_DESC(allow_usb, "Allow USB charge drawing default current");
+
+struct twl4030_bci {
+ struct device *dev;
+ struct power_supply ac;
+ struct power_supply usb;
+ struct usb_phy *transceiver;
+ struct notifier_block usb_nb;
+ struct work_struct work;
+ int irq_chg;
+ int irq_bci;
+
+ unsigned long event;
+};
+
+/*
+ * clear and set bits on an given register on a given module
+ */
+static int twl4030_clear_set(u8 mod_no, u8 clear, u8 set, u8 reg)
+{
+ u8 val = 0;
+ int ret;
+
+ ret = twl_i2c_read_u8(mod_no, &val, reg);
+ if (ret)
+ return ret;
+
+ val &= ~clear;
+ val |= set;
+
+ return twl_i2c_write_u8(mod_no, val, reg);
+}
+
+static int twl4030_bci_read(u8 reg, u8 *val)
+{
+ return twl_i2c_read_u8(TWL4030_MODULE_MAIN_CHARGE, val, reg);
+}
+
+static int twl4030_clear_set_boot_bci(u8 clear, u8 set)
+{
+ return twl4030_clear_set(TWL4030_MODULE_PM_MASTER, 0,
+ TWL4030_CONFIG_DONE | TWL4030_BCIAUTOWEN | set,
+ TWL4030_PM_MASTER_BOOT_BCI);
+}
+
+static int twl4030bci_read_adc_val(u8 reg)
+{
+ int ret, temp;
+ u8 val;
+
+ /* read MSB */
+ ret = twl4030_bci_read(reg + 1, &val);
+ if (ret)
+ return ret;
+
+ temp = (int)(val & 0x03) << 8;
+
+ /* read LSB */
+ ret = twl4030_bci_read(reg, &val);
+ if (ret)
+ return ret;
+
+ return temp | val;
+}
+
+/*
+ * Check if VBUS power is present
+ */
+static int twl4030_bci_have_vbus(struct twl4030_bci *bci)
+{
+ int ret;
+ u8 hwsts;
+
+ ret = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &hwsts,
+ TWL4030_PM_MASTER_STS_HW_CONDITIONS);
+ if (ret < 0)
+ return 0;
+
+ dev_dbg(bci->dev, "check_vbus: HW_CONDITIONS %02x\n", hwsts);
+
+ /* in case we also have STS_USB_ID, VBUS is driven by TWL itself */
+ if ((hwsts & TWL4030_STS_VBUS) && !(hwsts & TWL4030_STS_USB_ID))
+ return 1;
+
+ return 0;
+}
+
+/*
+ * Enable/Disable USB Charge funtionality.
+ */
+static int twl4030_charger_enable_usb(struct twl4030_bci *bci, bool enable)
+{
+ int ret;
+
+ if (enable) {
+ /* Check for USB charger conneted */
+ if (!twl4030_bci_have_vbus(bci))
+ return -ENODEV;
+
+ /*
+ * Until we can find out what current the device can provide,
+ * require a module param to enable USB charging.
+ */
+ if (!allow_usb) {
+ dev_warn(bci->dev, "USB charging is disabled.\n");
+ return -EACCES;
+ }
+
+ /* forcing the field BCIAUTOUSB (BOOT_BCI[1]) to 1 */
+ ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOUSB);
+ if (ret < 0)
+ return ret;
+
+ /* forcing USBFASTMCHG(BCIMFSTS4[2]) to 1 */
+ ret = twl4030_clear_set(TWL4030_MODULE_MAIN_CHARGE, 0,
+ TWL4030_USBFASTMCHG, TWL4030_BCIMFSTS4);
+ } else {
+ ret = twl4030_clear_set_boot_bci(TWL4030_BCIAUTOUSB, 0);
+ }
+
+ return ret;
+}
+
+/*
+ * Enable/Disable AC Charge funtionality.
+ */
+static int twl4030_charger_enable_ac(bool enable)
+{
+ int ret;
+
+ if (enable)
+ ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOAC);
+ else
+ ret = twl4030_clear_set_boot_bci(TWL4030_BCIAUTOAC, 0);
+
+ return ret;
+}
+
+/*
+ * TWL4030 CHG_PRES (AC charger presence) events
+ */
+static irqreturn_t twl4030_charger_interrupt(int irq, void *arg)
+{
+ struct twl4030_bci *bci = arg;
+
+ dev_dbg(bci->dev, "CHG_PRES irq\n");
+ power_supply_changed(&bci->ac);
+ power_supply_changed(&bci->usb);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * TWL4030 BCI monitoring events
+ */
+static irqreturn_t twl4030_bci_interrupt(int irq, void *arg)
+{
+ struct twl4030_bci *bci = arg;
+ u8 irqs1, irqs2;
+ int ret;
+
+ ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs1,
+ TWL4030_INTERRUPTS_BCIISR1A);
+ if (ret < 0)
+ return IRQ_HANDLED;
+
+ ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs2,
+ TWL4030_INTERRUPTS_BCIISR2A);
+ if (ret < 0)
+ return IRQ_HANDLED;
+
+ dev_dbg(bci->dev, "BCI irq %02x %02x\n", irqs2, irqs1);
+
+ if (irqs1 & (TWL4030_ICHGLOW | TWL4030_ICHGEOC)) {
+ /* charger state change, inform the core */
+ power_supply_changed(&bci->ac);
+ power_supply_changed(&bci->usb);
+ }
+
+ /* various monitoring events, for now we just log them here */
+ if (irqs1 & (TWL4030_TBATOR2 | TWL4030_TBATOR1))
+ dev_warn(bci->dev, "battery temperature out of range\n");
+
+ if (irqs1 & TWL4030_BATSTS)
+ dev_crit(bci->dev, "battery disconnected\n");
+
+ if (irqs2 & TWL4030_VBATOV)
+ dev_crit(bci->dev, "VBAT overvoltage\n");
+
+ if (irqs2 & TWL4030_VBUSOV)
+ dev_crit(bci->dev, "VBUS overvoltage\n");
+
+ if (irqs2 & TWL4030_ACCHGOV)
+ dev_crit(bci->dev, "Ac charger overvoltage\n");
+
+ return IRQ_HANDLED;
+}
+
+static void twl4030_bci_usb_work(struct work_struct *data)
+{
+ struct twl4030_bci *bci = container_of(data, struct twl4030_bci, work);
+
+ switch (bci->event) {
+ case USB_EVENT_VBUS:
+ case USB_EVENT_CHARGER:
+ twl4030_charger_enable_usb(bci, true);
+ break;
+ case USB_EVENT_NONE:
+ twl4030_charger_enable_usb(bci, false);
+ break;
+ }
+}
+
+static int twl4030_bci_usb_ncb(struct notifier_block *nb, unsigned long val,
+ void *priv)
+{
+ struct twl4030_bci *bci = container_of(nb, struct twl4030_bci, usb_nb);
+
+ dev_dbg(bci->dev, "OTG notify %lu\n", val);
+
+ bci->event = val;
+ schedule_work(&bci->work);
+
+ return NOTIFY_OK;
+}
+
+/*
+ * TI provided formulas:
+ * CGAIN == 0: ICHG = (BCIICHG * 1.7) / (2^10 - 1) - 0.85
+ * CGAIN == 1: ICHG = (BCIICHG * 3.4) / (2^10 - 1) - 1.7
+ * Here we use integer approximation of:
+ * CGAIN == 0: val * 1.6618 - 0.85
+ * CGAIN == 1: (val * 1.6618 - 0.85) * 2
+ */
+static int twl4030_charger_get_current(void)
+{
+ int curr;
+ int ret;
+ u8 bcictl1;
+
+ curr = twl4030bci_read_adc_val(TWL4030_BCIICHG);
+ if (curr < 0)
+ return curr;
+
+ ret = twl4030_bci_read(TWL4030_BCICTL1, &bcictl1);
+ if (ret)
+ return ret;
+
+ ret = (curr * 16618 - 850 * 10000) / 10;
+ if (bcictl1 & TWL4030_CGAIN)
+ ret *= 2;
+
+ return ret;
+}
+
+/*
+ * Returns the main charge FSM state
+ * Or < 0 on failure.
+ */
+static int twl4030bci_state(struct twl4030_bci *bci)
+{
+ int ret;
+ u8 state;
+
+ ret = twl4030_bci_read(TWL4030_BCIMSTATEC, &state);
+ if (ret) {
+ pr_err("twl4030_bci: error reading BCIMSTATEC\n");
+ return ret;
+ }
+
+ dev_dbg(bci->dev, "state: %02x\n", state);
+
+ return state;
+}
+
+static int twl4030_bci_state_to_status(int state)
+{
+ state &= TWL4030_MSTATEC_MASK;
+ if (TWL4030_MSTATEC_QUICK1 <= state && state <= TWL4030_MSTATEC_QUICK7)
+ return POWER_SUPPLY_STATUS_CHARGING;
+ else if (TWL4030_MSTATEC_COMPLETE1 <= state &&
+ state <= TWL4030_MSTATEC_COMPLETE4)
+ return POWER_SUPPLY_STATUS_FULL;
+ else
+ return POWER_SUPPLY_STATUS_NOT_CHARGING;
+}
+
+static int twl4030_bci_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct twl4030_bci *bci = dev_get_drvdata(psy->dev->parent);
+ int is_charging;
+ int state;
+ int ret;
+
+ state = twl4030bci_state(bci);
+ if (state < 0)
+ return state;
+
+ if (psy->type == POWER_SUPPLY_TYPE_USB)
+ is_charging = state & TWL4030_MSTATEC_USB;
+ else
+ is_charging = state & TWL4030_MSTATEC_AC;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (is_charging)
+ val->intval = twl4030_bci_state_to_status(state);
+ else
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ /* charging must be active for meaningful result */
+ if (!is_charging)
+ return -ENODATA;
+ if (psy->type == POWER_SUPPLY_TYPE_USB) {
+ ret = twl4030bci_read_adc_val(TWL4030_BCIVBUS);
+ if (ret < 0)
+ return ret;
+ /* BCIVBUS uses ADCIN8, 7/1023 V/step */
+ val->intval = ret * 6843;
+ } else {
+ ret = twl4030bci_read_adc_val(TWL4030_BCIVAC);
+ if (ret < 0)
+ return ret;
+ /* BCIVAC uses ADCIN11, 10/1023 V/step */
+ val->intval = ret * 9775;
+ }
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ if (!is_charging)
+ return -ENODATA;
+ /* current measurement is shared between AC and USB */
+ ret = twl4030_charger_get_current();
+ if (ret < 0)
+ return ret;
+ val->intval = ret;
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = is_charging &&
+ twl4030_bci_state_to_status(state) !=
+ POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property twl4030_charger_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+};
+
+static int __init twl4030_bci_probe(struct platform_device *pdev)
+{
+ struct twl4030_bci *bci;
+ int ret;
+ u32 reg;
+
+ bci = kzalloc(sizeof(*bci), GFP_KERNEL);
+ if (bci == NULL)
+ return -ENOMEM;
+
+ bci->dev = &pdev->dev;
+ bci->irq_chg = platform_get_irq(pdev, 0);
+ bci->irq_bci = platform_get_irq(pdev, 1);
+
+ platform_set_drvdata(pdev, bci);
+
+ bci->ac.name = "twl4030_ac";
+ bci->ac.type = POWER_SUPPLY_TYPE_MAINS;
+ bci->ac.properties = twl4030_charger_props;
+ bci->ac.num_properties = ARRAY_SIZE(twl4030_charger_props);
+ bci->ac.get_property = twl4030_bci_get_property;
+
+ ret = power_supply_register(&pdev->dev, &bci->ac);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register ac: %d\n", ret);
+ goto fail_register_ac;
+ }
+
+ bci->usb.name = "twl4030_usb";
+ bci->usb.type = POWER_SUPPLY_TYPE_USB;
+ bci->usb.properties = twl4030_charger_props;
+ bci->usb.num_properties = ARRAY_SIZE(twl4030_charger_props);
+ bci->usb.get_property = twl4030_bci_get_property;
+
+ ret = power_supply_register(&pdev->dev, &bci->usb);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register usb: %d\n", ret);
+ goto fail_register_usb;
+ }
+
+ ret = request_threaded_irq(bci->irq_chg, NULL,
+ twl4030_charger_interrupt, 0, pdev->name, bci);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "could not request irq %d, status %d\n",
+ bci->irq_chg, ret);
+ goto fail_chg_irq;
+ }
+
+ ret = request_threaded_irq(bci->irq_bci, NULL,
+ twl4030_bci_interrupt, 0, pdev->name, bci);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "could not request irq %d, status %d\n",
+ bci->irq_bci, ret);
+ goto fail_bci_irq;
+ }
+
+ INIT_WORK(&bci->work, twl4030_bci_usb_work);
+
+ bci->transceiver = usb_get_transceiver();
+ if (bci->transceiver != NULL) {
+ bci->usb_nb.notifier_call = twl4030_bci_usb_ncb;
+ usb_register_notifier(bci->transceiver, &bci->usb_nb);
+ }
+
+ /* Enable interrupts now. */
+ reg = ~(u32)(TWL4030_ICHGLOW | TWL4030_ICHGEOC | TWL4030_TBATOR2 |
+ TWL4030_TBATOR1 | TWL4030_BATSTS);
+ ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg,
+ TWL4030_INTERRUPTS_BCIIMR1A);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to unmask interrupts: %d\n", ret);
+ goto fail_unmask_interrupts;
+ }
+
+ reg = ~(u32)(TWL4030_VBATOV | TWL4030_VBUSOV | TWL4030_ACCHGOV);
+ ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg,
+ TWL4030_INTERRUPTS_BCIIMR2A);
+ if (ret < 0)
+ dev_warn(&pdev->dev, "failed to unmask interrupts: %d\n", ret);
+
+ twl4030_charger_enable_ac(true);
+ twl4030_charger_enable_usb(bci, true);
+
+ return 0;
+
+fail_unmask_interrupts:
+ if (bci->transceiver != NULL) {
+ usb_unregister_notifier(bci->transceiver, &bci->usb_nb);
+ usb_put_transceiver(bci->transceiver);
+ }
+ free_irq(bci->irq_bci, bci);
+fail_bci_irq:
+ free_irq(bci->irq_chg, bci);
+fail_chg_irq:
+ power_supply_unregister(&bci->usb);
+fail_register_usb:
+ power_supply_unregister(&bci->ac);
+fail_register_ac:
+ platform_set_drvdata(pdev, NULL);
+ kfree(bci);
+
+ return ret;
+}
+
+static int __exit twl4030_bci_remove(struct platform_device *pdev)
+{
+ struct twl4030_bci *bci = platform_get_drvdata(pdev);
+
+ twl4030_charger_enable_ac(false);
+ twl4030_charger_enable_usb(bci, false);
+
+ /* mask interrupts */
+ twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
+ TWL4030_INTERRUPTS_BCIIMR1A);
+ twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
+ TWL4030_INTERRUPTS_BCIIMR2A);
+
+ if (bci->transceiver != NULL) {
+ usb_unregister_notifier(bci->transceiver, &bci->usb_nb);
+ usb_put_transceiver(bci->transceiver);
+ }
+ free_irq(bci->irq_bci, bci);
+ free_irq(bci->irq_chg, bci);
+ power_supply_unregister(&bci->usb);
+ power_supply_unregister(&bci->ac);
+ platform_set_drvdata(pdev, NULL);
+ kfree(bci);
+
+ return 0;
+}
+
+static struct platform_driver twl4030_bci_driver = {
+ .driver = {
+ .name = "twl4030_bci",
+ .owner = THIS_MODULE,
+ },
+ .remove = __exit_p(twl4030_bci_remove),
+};
+
+static int __init twl4030_bci_init(void)
+{
+ return platform_driver_probe(&twl4030_bci_driver, twl4030_bci_probe);
+}
+module_init(twl4030_bci_init);
+
+static void __exit twl4030_bci_exit(void)
+{
+ platform_driver_unregister(&twl4030_bci_driver);
+}
+module_exit(twl4030_bci_exit);
+
+MODULE_AUTHOR("Gražvydas Ignotas");
+MODULE_DESCRIPTION("TWL4030 Battery Charger Interface driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:twl4030_bci");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/wm831x_backup.c b/ap/os/linux/linux-3.4.x/drivers/power/wm831x_backup.c
new file mode 100644
index 0000000..6243e69
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/wm831x_backup.c
@@ -0,0 +1,234 @@
+/*
+ * Backup battery driver for Wolfson Microelectronics wm831x PMICs
+ *
+ * Copyright 2009 Wolfson Microelectronics PLC.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/auxadc.h>
+#include <linux/mfd/wm831x/pmu.h>
+#include <linux/mfd/wm831x/pdata.h>
+
+struct wm831x_backup {
+ struct wm831x *wm831x;
+ struct power_supply backup;
+ char name[20];
+};
+
+static int wm831x_backup_read_voltage(struct wm831x *wm831x,
+ enum wm831x_auxadc src,
+ union power_supply_propval *val)
+{
+ int ret;
+
+ ret = wm831x_auxadc_read_uv(wm831x, src);
+ if (ret >= 0)
+ val->intval = ret;
+
+ return ret;
+}
+
+/*********************************************************************
+ * Backup supply properties
+ *********************************************************************/
+
+static void wm831x_config_backup(struct wm831x *wm831x)
+{
+ struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data;
+ struct wm831x_backup_pdata *pdata;
+ int ret, reg;
+
+ if (!wm831x_pdata || !wm831x_pdata->backup) {
+ dev_warn(wm831x->dev,
+ "No backup battery charger configuration\n");
+ return;
+ }
+
+ pdata = wm831x_pdata->backup;
+
+ reg = 0;
+
+ if (pdata->charger_enable)
+ reg |= WM831X_BKUP_CHG_ENA | WM831X_BKUP_BATT_DET_ENA;
+ if (pdata->no_constant_voltage)
+ reg |= WM831X_BKUP_CHG_MODE;
+
+ switch (pdata->vlim) {
+ case 2500:
+ break;
+ case 3100:
+ reg |= WM831X_BKUP_CHG_VLIM;
+ break;
+ default:
+ dev_err(wm831x->dev, "Invalid backup voltage limit %dmV\n",
+ pdata->vlim);
+ }
+
+ switch (pdata->ilim) {
+ case 100:
+ break;
+ case 200:
+ reg |= 1;
+ break;
+ case 300:
+ reg |= 2;
+ break;
+ case 400:
+ reg |= 3;
+ break;
+ default:
+ dev_err(wm831x->dev, "Invalid backup current limit %duA\n",
+ pdata->ilim);
+ }
+
+ ret = wm831x_reg_unlock(wm831x);
+ if (ret != 0) {
+ dev_err(wm831x->dev, "Failed to unlock registers: %d\n", ret);
+ return;
+ }
+
+ ret = wm831x_set_bits(wm831x, WM831X_BACKUP_CHARGER_CONTROL,
+ WM831X_BKUP_CHG_ENA_MASK |
+ WM831X_BKUP_CHG_MODE_MASK |
+ WM831X_BKUP_BATT_DET_ENA_MASK |
+ WM831X_BKUP_CHG_VLIM_MASK |
+ WM831X_BKUP_CHG_ILIM_MASK,
+ reg);
+ if (ret != 0)
+ dev_err(wm831x->dev,
+ "Failed to set backup charger config: %d\n", ret);
+
+ wm831x_reg_lock(wm831x);
+}
+
+static int wm831x_backup_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm831x_backup *devdata = dev_get_drvdata(psy->dev->parent);
+ struct wm831x *wm831x = devdata->wm831x;
+ int ret = 0;
+
+ ret = wm831x_reg_read(wm831x, WM831X_BACKUP_CHARGER_CONTROL);
+ if (ret < 0)
+ return ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (ret & WM831X_BKUP_CHG_STS)
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = wm831x_backup_read_voltage(wm831x, WM831X_AUX_BKUP_BATT,
+ val);
+ break;
+
+ case POWER_SUPPLY_PROP_PRESENT:
+ if (ret & WM831X_BKUP_CHG_STS)
+ val->intval = 1;
+ else
+ val->intval = 0;
+ break;
+
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property wm831x_backup_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_PRESENT,
+};
+
+/*********************************************************************
+ * Initialisation
+ *********************************************************************/
+
+static __devinit int wm831x_backup_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data;
+ struct wm831x_backup *devdata;
+ struct power_supply *backup;
+ int ret;
+
+ devdata = kzalloc(sizeof(struct wm831x_backup), GFP_KERNEL);
+ if (devdata == NULL)
+ return -ENOMEM;
+
+ devdata->wm831x = wm831x;
+ platform_set_drvdata(pdev, devdata);
+
+ backup = &devdata->backup;
+
+ /* We ignore configuration failures since we can still read
+ * back the status without enabling the charger (which may
+ * already be enabled anyway).
+ */
+ wm831x_config_backup(wm831x);
+
+ if (wm831x_pdata && wm831x_pdata->wm831x_num)
+ snprintf(devdata->name, sizeof(devdata->name),
+ "wm831x-backup.%d", wm831x_pdata->wm831x_num);
+ else
+ snprintf(devdata->name, sizeof(devdata->name),
+ "wm831x-backup");
+
+ backup->name = devdata->name;
+ backup->type = POWER_SUPPLY_TYPE_BATTERY;
+ backup->properties = wm831x_backup_props;
+ backup->num_properties = ARRAY_SIZE(wm831x_backup_props);
+ backup->get_property = wm831x_backup_get_prop;
+ ret = power_supply_register(&pdev->dev, backup);
+ if (ret)
+ goto err_kmalloc;
+
+ return ret;
+
+err_kmalloc:
+ kfree(devdata);
+ return ret;
+}
+
+static __devexit int wm831x_backup_remove(struct platform_device *pdev)
+{
+ struct wm831x_backup *devdata = platform_get_drvdata(pdev);
+
+ power_supply_unregister(&devdata->backup);
+ kfree(devdata->backup.name);
+ kfree(devdata);
+
+ return 0;
+}
+
+static struct platform_driver wm831x_backup_driver = {
+ .probe = wm831x_backup_probe,
+ .remove = __devexit_p(wm831x_backup_remove),
+ .driver = {
+ .name = "wm831x-backup",
+ },
+};
+
+module_platform_driver(wm831x_backup_driver);
+
+MODULE_DESCRIPTION("Backup battery charger driver for WM831x PMICs");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:wm831x-backup");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/wm831x_power.c b/ap/os/linux/linux-3.4.x/drivers/power/wm831x_power.c
new file mode 100644
index 0000000..987332b
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/wm831x_power.c
@@ -0,0 +1,663 @@
+/*
+ * PMU driver for Wolfson Microelectronics wm831x PMICs
+ *
+ * Copyright 2009 Wolfson Microelectronics PLC.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/auxadc.h>
+#include <linux/mfd/wm831x/pmu.h>
+#include <linux/mfd/wm831x/pdata.h>
+
+struct wm831x_power {
+ struct wm831x *wm831x;
+ struct power_supply wall;
+ struct power_supply usb;
+ struct power_supply battery;
+ char wall_name[20];
+ char usb_name[20];
+ char battery_name[20];
+ bool have_battery;
+};
+
+static int wm831x_power_check_online(struct wm831x *wm831x, int supply,
+ union power_supply_propval *val)
+{
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, WM831X_SYSTEM_STATUS);
+ if (ret < 0)
+ return ret;
+
+ if (ret & supply)
+ val->intval = 1;
+ else
+ val->intval = 0;
+
+ return 0;
+}
+
+static int wm831x_power_read_voltage(struct wm831x *wm831x,
+ enum wm831x_auxadc src,
+ union power_supply_propval *val)
+{
+ int ret;
+
+ ret = wm831x_auxadc_read_uv(wm831x, src);
+ if (ret >= 0)
+ val->intval = ret;
+
+ return ret;
+}
+
+/*********************************************************************
+ * WALL Power
+ *********************************************************************/
+static int wm831x_wall_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent);
+ struct wm831x *wm831x = wm831x_power->wm831x;
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = wm831x_power_check_online(wm831x, WM831X_PWR_WALL, val);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_WALL, val);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property wm831x_wall_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+};
+
+/*********************************************************************
+ * USB Power
+ *********************************************************************/
+static int wm831x_usb_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent);
+ struct wm831x *wm831x = wm831x_power->wm831x;
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = wm831x_power_check_online(wm831x, WM831X_PWR_USB, val);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_USB, val);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property wm831x_usb_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+};
+
+/*********************************************************************
+ * Battery properties
+ *********************************************************************/
+
+struct chg_map {
+ int val;
+ int reg_val;
+};
+
+static struct chg_map trickle_ilims[] = {
+ { 50, 0 << WM831X_CHG_TRKL_ILIM_SHIFT },
+ { 100, 1 << WM831X_CHG_TRKL_ILIM_SHIFT },
+ { 150, 2 << WM831X_CHG_TRKL_ILIM_SHIFT },
+ { 200, 3 << WM831X_CHG_TRKL_ILIM_SHIFT },
+};
+
+static struct chg_map vsels[] = {
+ { 4050, 0 << WM831X_CHG_VSEL_SHIFT },
+ { 4100, 1 << WM831X_CHG_VSEL_SHIFT },
+ { 4150, 2 << WM831X_CHG_VSEL_SHIFT },
+ { 4200, 3 << WM831X_CHG_VSEL_SHIFT },
+};
+
+static struct chg_map fast_ilims[] = {
+ { 0, 0 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 50, 1 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 100, 2 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 150, 3 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 200, 4 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 250, 5 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 300, 6 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 350, 7 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 400, 8 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 450, 9 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 500, 10 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 600, 11 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 700, 12 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 800, 13 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 900, 14 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 1000, 15 << WM831X_CHG_FAST_ILIM_SHIFT },
+};
+
+static struct chg_map eoc_iterms[] = {
+ { 20, 0 << WM831X_CHG_ITERM_SHIFT },
+ { 30, 1 << WM831X_CHG_ITERM_SHIFT },
+ { 40, 2 << WM831X_CHG_ITERM_SHIFT },
+ { 50, 3 << WM831X_CHG_ITERM_SHIFT },
+ { 60, 4 << WM831X_CHG_ITERM_SHIFT },
+ { 70, 5 << WM831X_CHG_ITERM_SHIFT },
+ { 80, 6 << WM831X_CHG_ITERM_SHIFT },
+ { 90, 7 << WM831X_CHG_ITERM_SHIFT },
+};
+
+static struct chg_map chg_times[] = {
+ { 60, 0 << WM831X_CHG_TIME_SHIFT },
+ { 90, 1 << WM831X_CHG_TIME_SHIFT },
+ { 120, 2 << WM831X_CHG_TIME_SHIFT },
+ { 150, 3 << WM831X_CHG_TIME_SHIFT },
+ { 180, 4 << WM831X_CHG_TIME_SHIFT },
+ { 210, 5 << WM831X_CHG_TIME_SHIFT },
+ { 240, 6 << WM831X_CHG_TIME_SHIFT },
+ { 270, 7 << WM831X_CHG_TIME_SHIFT },
+ { 300, 8 << WM831X_CHG_TIME_SHIFT },
+ { 330, 9 << WM831X_CHG_TIME_SHIFT },
+ { 360, 10 << WM831X_CHG_TIME_SHIFT },
+ { 390, 11 << WM831X_CHG_TIME_SHIFT },
+ { 420, 12 << WM831X_CHG_TIME_SHIFT },
+ { 450, 13 << WM831X_CHG_TIME_SHIFT },
+ { 480, 14 << WM831X_CHG_TIME_SHIFT },
+ { 510, 15 << WM831X_CHG_TIME_SHIFT },
+};
+
+static void wm831x_battey_apply_config(struct wm831x *wm831x,
+ struct chg_map *map, int count, int val,
+ int *reg, const char *name,
+ const char *units)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ if (val == map[i].val)
+ break;
+ if (i == count) {
+ dev_err(wm831x->dev, "Invalid %s %d%s\n",
+ name, val, units);
+ } else {
+ *reg |= map[i].reg_val;
+ dev_dbg(wm831x->dev, "Set %s of %d%s\n", name, val, units);
+ }
+}
+
+static void wm831x_config_battery(struct wm831x *wm831x)
+{
+ struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data;
+ struct wm831x_battery_pdata *pdata;
+ int ret, reg1, reg2;
+
+ if (!wm831x_pdata || !wm831x_pdata->battery) {
+ dev_warn(wm831x->dev,
+ "No battery charger configuration\n");
+ return;
+ }
+
+ pdata = wm831x_pdata->battery;
+
+ reg1 = 0;
+ reg2 = 0;
+
+ if (!pdata->enable) {
+ dev_info(wm831x->dev, "Battery charger disabled\n");
+ return;
+ }
+
+ reg1 |= WM831X_CHG_ENA;
+ if (pdata->off_mask)
+ reg2 |= WM831X_CHG_OFF_MSK;
+ if (pdata->fast_enable)
+ reg1 |= WM831X_CHG_FAST;
+
+ wm831x_battey_apply_config(wm831x, trickle_ilims,
+ ARRAY_SIZE(trickle_ilims),
+ pdata->trickle_ilim, ®2,
+ "trickle charge current limit", "mA");
+
+ wm831x_battey_apply_config(wm831x, vsels, ARRAY_SIZE(vsels),
+ pdata->vsel, ®2,
+ "target voltage", "mV");
+
+ wm831x_battey_apply_config(wm831x, fast_ilims, ARRAY_SIZE(fast_ilims),
+ pdata->fast_ilim, ®2,
+ "fast charge current limit", "mA");
+
+ wm831x_battey_apply_config(wm831x, eoc_iterms, ARRAY_SIZE(eoc_iterms),
+ pdata->eoc_iterm, ®1,
+ "end of charge current threshold", "mA");
+
+ wm831x_battey_apply_config(wm831x, chg_times, ARRAY_SIZE(chg_times),
+ pdata->timeout, ®2,
+ "charger timeout", "min");
+
+ ret = wm831x_reg_unlock(wm831x);
+ if (ret != 0) {
+ dev_err(wm831x->dev, "Failed to unlock registers: %d\n", ret);
+ return;
+ }
+
+ ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_1,
+ WM831X_CHG_ENA_MASK |
+ WM831X_CHG_FAST_MASK |
+ WM831X_CHG_ITERM_MASK,
+ reg1);
+ if (ret != 0)
+ dev_err(wm831x->dev, "Failed to set charger control 1: %d\n",
+ ret);
+
+ ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_2,
+ WM831X_CHG_OFF_MSK |
+ WM831X_CHG_TIME_MASK |
+ WM831X_CHG_FAST_ILIM_MASK |
+ WM831X_CHG_TRKL_ILIM_MASK |
+ WM831X_CHG_VSEL_MASK,
+ reg2);
+ if (ret != 0)
+ dev_err(wm831x->dev, "Failed to set charger control 2: %d\n",
+ ret);
+
+ wm831x_reg_lock(wm831x);
+}
+
+static int wm831x_bat_check_status(struct wm831x *wm831x, int *status)
+{
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, WM831X_SYSTEM_STATUS);
+ if (ret < 0)
+ return ret;
+
+ if (ret & WM831X_PWR_SRC_BATT) {
+ *status = POWER_SUPPLY_STATUS_DISCHARGING;
+ return 0;
+ }
+
+ ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS);
+ if (ret < 0)
+ return ret;
+
+ switch (ret & WM831X_CHG_STATE_MASK) {
+ case WM831X_CHG_STATE_OFF:
+ *status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ case WM831X_CHG_STATE_TRICKLE:
+ case WM831X_CHG_STATE_FAST:
+ *status = POWER_SUPPLY_STATUS_CHARGING;
+ break;
+
+ default:
+ *status = POWER_SUPPLY_STATUS_UNKNOWN;
+ break;
+ }
+
+ return 0;
+}
+
+static int wm831x_bat_check_type(struct wm831x *wm831x, int *type)
+{
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS);
+ if (ret < 0)
+ return ret;
+
+ switch (ret & WM831X_CHG_STATE_MASK) {
+ case WM831X_CHG_STATE_TRICKLE:
+ case WM831X_CHG_STATE_TRICKLE_OT:
+ *type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ break;
+ case WM831X_CHG_STATE_FAST:
+ case WM831X_CHG_STATE_FAST_OT:
+ *type = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ break;
+ default:
+ *type = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
+ }
+
+ return 0;
+}
+
+static int wm831x_bat_check_health(struct wm831x *wm831x, int *health)
+{
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS);
+ if (ret < 0)
+ return ret;
+
+ if (ret & WM831X_BATT_HOT_STS) {
+ *health = POWER_SUPPLY_HEALTH_OVERHEAT;
+ return 0;
+ }
+
+ if (ret & WM831X_BATT_COLD_STS) {
+ *health = POWER_SUPPLY_HEALTH_COLD;
+ return 0;
+ }
+
+ if (ret & WM831X_BATT_OV_STS) {
+ *health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ return 0;
+ }
+
+ switch (ret & WM831X_CHG_STATE_MASK) {
+ case WM831X_CHG_STATE_TRICKLE_OT:
+ case WM831X_CHG_STATE_FAST_OT:
+ *health = POWER_SUPPLY_HEALTH_OVERHEAT;
+ break;
+ case WM831X_CHG_STATE_DEFECTIVE:
+ *health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ break;
+ default:
+ *health = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ }
+
+ return 0;
+}
+
+static int wm831x_bat_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent);
+ struct wm831x *wm831x = wm831x_power->wm831x;
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = wm831x_bat_check_status(wm831x, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = wm831x_power_check_online(wm831x, WM831X_PWR_SRC_BATT,
+ val);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_BATT, val);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = wm831x_bat_check_health(wm831x, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ ret = wm831x_bat_check_type(wm831x, &val->intval);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property wm831x_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+};
+
+static const char *wm831x_bat_irqs[] = {
+ "BATT HOT",
+ "BATT COLD",
+ "BATT FAIL",
+ "OV",
+ "END",
+ "TO",
+ "MODE",
+ "START",
+};
+
+static irqreturn_t wm831x_bat_irq(int irq, void *data)
+{
+ struct wm831x_power *wm831x_power = data;
+ struct wm831x *wm831x = wm831x_power->wm831x;
+
+ dev_dbg(wm831x->dev, "Battery status changed: %d\n", irq);
+
+ /* The battery charger is autonomous so we don't need to do
+ * anything except kick user space */
+ if (wm831x_power->have_battery)
+ power_supply_changed(&wm831x_power->battery);
+
+ return IRQ_HANDLED;
+}
+
+
+/*********************************************************************
+ * Initialisation
+ *********************************************************************/
+
+static irqreturn_t wm831x_syslo_irq(int irq, void *data)
+{
+ struct wm831x_power *wm831x_power = data;
+ struct wm831x *wm831x = wm831x_power->wm831x;
+
+ /* Not much we can actually *do* but tell people for
+ * posterity, we're probably about to run out of power. */
+ dev_crit(wm831x->dev, "SYSVDD under voltage\n");
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wm831x_pwr_src_irq(int irq, void *data)
+{
+ struct wm831x_power *wm831x_power = data;
+ struct wm831x *wm831x = wm831x_power->wm831x;
+
+ dev_dbg(wm831x->dev, "Power source changed\n");
+
+ /* Just notify for everything - little harm in overnotifying. */
+ if (wm831x_power->have_battery)
+ power_supply_changed(&wm831x_power->battery);
+ power_supply_changed(&wm831x_power->usb);
+ power_supply_changed(&wm831x_power->wall);
+
+ return IRQ_HANDLED;
+}
+
+static __devinit int wm831x_power_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data;
+ struct wm831x_power *power;
+ struct power_supply *usb;
+ struct power_supply *battery;
+ struct power_supply *wall;
+ int ret, irq, i;
+
+ power = kzalloc(sizeof(struct wm831x_power), GFP_KERNEL);
+ if (power == NULL)
+ return -ENOMEM;
+
+ power->wm831x = wm831x;
+ platform_set_drvdata(pdev, power);
+
+ usb = &power->usb;
+ battery = &power->battery;
+ wall = &power->wall;
+
+ if (wm831x_pdata && wm831x_pdata->wm831x_num) {
+ snprintf(power->wall_name, sizeof(power->wall_name),
+ "wm831x-wall.%d", wm831x_pdata->wm831x_num);
+ snprintf(power->battery_name, sizeof(power->wall_name),
+ "wm831x-battery.%d", wm831x_pdata->wm831x_num);
+ snprintf(power->usb_name, sizeof(power->wall_name),
+ "wm831x-usb.%d", wm831x_pdata->wm831x_num);
+ } else {
+ snprintf(power->wall_name, sizeof(power->wall_name),
+ "wm831x-wall");
+ snprintf(power->battery_name, sizeof(power->wall_name),
+ "wm831x-battery");
+ snprintf(power->usb_name, sizeof(power->wall_name),
+ "wm831x-usb");
+ }
+
+ /* We ignore configuration failures since we can still read back
+ * the status without enabling the charger.
+ */
+ wm831x_config_battery(wm831x);
+
+ wall->name = power->wall_name;
+ wall->type = POWER_SUPPLY_TYPE_MAINS;
+ wall->properties = wm831x_wall_props;
+ wall->num_properties = ARRAY_SIZE(wm831x_wall_props);
+ wall->get_property = wm831x_wall_get_prop;
+ ret = power_supply_register(&pdev->dev, wall);
+ if (ret)
+ goto err_kmalloc;
+
+ usb->name = power->usb_name,
+ usb->type = POWER_SUPPLY_TYPE_USB;
+ usb->properties = wm831x_usb_props;
+ usb->num_properties = ARRAY_SIZE(wm831x_usb_props);
+ usb->get_property = wm831x_usb_get_prop;
+ ret = power_supply_register(&pdev->dev, usb);
+ if (ret)
+ goto err_wall;
+
+ ret = wm831x_reg_read(wm831x, WM831X_CHARGER_CONTROL_1);
+ if (ret < 0)
+ goto err_wall;
+ power->have_battery = ret & WM831X_CHG_ENA;
+
+ if (power->have_battery) {
+ battery->name = power->battery_name;
+ battery->properties = wm831x_bat_props;
+ battery->num_properties = ARRAY_SIZE(wm831x_bat_props);
+ battery->get_property = wm831x_bat_get_prop;
+ battery->use_for_apm = 1;
+ ret = power_supply_register(&pdev->dev, battery);
+ if (ret)
+ goto err_usb;
+ }
+
+ irq = platform_get_irq_byname(pdev, "SYSLO");
+ ret = request_threaded_irq(irq, NULL, wm831x_syslo_irq,
+ IRQF_TRIGGER_RISING, "System power low",
+ power);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request SYSLO IRQ %d: %d\n",
+ irq, ret);
+ goto err_battery;
+ }
+
+ irq = platform_get_irq_byname(pdev, "PWR SRC");
+ ret = request_threaded_irq(irq, NULL, wm831x_pwr_src_irq,
+ IRQF_TRIGGER_RISING, "Power source",
+ power);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request PWR SRC IRQ %d: %d\n",
+ irq, ret);
+ goto err_syslo;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(wm831x_bat_irqs); i++) {
+ irq = platform_get_irq_byname(pdev, wm831x_bat_irqs[i]);
+ ret = request_threaded_irq(irq, NULL, wm831x_bat_irq,
+ IRQF_TRIGGER_RISING,
+ wm831x_bat_irqs[i],
+ power);
+ if (ret != 0) {
+ dev_err(&pdev->dev,
+ "Failed to request %s IRQ %d: %d\n",
+ wm831x_bat_irqs[i], irq, ret);
+ goto err_bat_irq;
+ }
+ }
+
+ return ret;
+
+err_bat_irq:
+ for (; i >= 0; i--) {
+ irq = platform_get_irq_byname(pdev, wm831x_bat_irqs[i]);
+ free_irq(irq, power);
+ }
+ irq = platform_get_irq_byname(pdev, "PWR SRC");
+ free_irq(irq, power);
+err_syslo:
+ irq = platform_get_irq_byname(pdev, "SYSLO");
+ free_irq(irq, power);
+err_battery:
+ if (power->have_battery)
+ power_supply_unregister(battery);
+err_usb:
+ power_supply_unregister(usb);
+err_wall:
+ power_supply_unregister(wall);
+err_kmalloc:
+ kfree(power);
+ return ret;
+}
+
+static __devexit int wm831x_power_remove(struct platform_device *pdev)
+{
+ struct wm831x_power *wm831x_power = platform_get_drvdata(pdev);
+ int irq, i;
+
+ for (i = 0; i < ARRAY_SIZE(wm831x_bat_irqs); i++) {
+ irq = platform_get_irq_byname(pdev, wm831x_bat_irqs[i]);
+ free_irq(irq, wm831x_power);
+ }
+
+ irq = platform_get_irq_byname(pdev, "PWR SRC");
+ free_irq(irq, wm831x_power);
+
+ irq = platform_get_irq_byname(pdev, "SYSLO");
+ free_irq(irq, wm831x_power);
+
+ if (wm831x_power->have_battery)
+ power_supply_unregister(&wm831x_power->battery);
+ power_supply_unregister(&wm831x_power->wall);
+ power_supply_unregister(&wm831x_power->usb);
+ kfree(wm831x_power);
+ return 0;
+}
+
+static struct platform_driver wm831x_power_driver = {
+ .probe = wm831x_power_probe,
+ .remove = __devexit_p(wm831x_power_remove),
+ .driver = {
+ .name = "wm831x-power",
+ },
+};
+
+module_platform_driver(wm831x_power_driver);
+
+MODULE_DESCRIPTION("Power supply driver for WM831x PMICs");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:wm831x-power");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/wm8350_power.c b/ap/os/linux/linux-3.4.x/drivers/power/wm8350_power.c
new file mode 100644
index 0000000..fae04d3
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/wm8350_power.c
@@ -0,0 +1,529 @@
+/*
+ * Battery driver for wm8350 PMIC
+ *
+ * Copyright 2007, 2008 Wolfson Microelectronics PLC.
+ *
+ * Based on OLPC Battery Driver
+ *
+ * Copyright 2006 David Woodhouse <dwmw2@infradead.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/mfd/wm8350/supply.h>
+#include <linux/mfd/wm8350/core.h>
+#include <linux/mfd/wm8350/comparator.h>
+
+static int wm8350_read_battery_uvolts(struct wm8350 *wm8350)
+{
+ return wm8350_read_auxadc(wm8350, WM8350_AUXADC_BATT, 0, 0)
+ * WM8350_AUX_COEFF;
+}
+
+static int wm8350_read_line_uvolts(struct wm8350 *wm8350)
+{
+ return wm8350_read_auxadc(wm8350, WM8350_AUXADC_LINE, 0, 0)
+ * WM8350_AUX_COEFF;
+}
+
+static int wm8350_read_usb_uvolts(struct wm8350 *wm8350)
+{
+ return wm8350_read_auxadc(wm8350, WM8350_AUXADC_USB, 0, 0)
+ * WM8350_AUX_COEFF;
+}
+
+#define WM8350_BATT_SUPPLY 1
+#define WM8350_USB_SUPPLY 2
+#define WM8350_LINE_SUPPLY 4
+
+static inline int wm8350_charge_time_min(struct wm8350 *wm8350, int min)
+{
+ if (!wm8350->power.rev_g_coeff)
+ return (((min - 30) / 15) & 0xf) << 8;
+ else
+ return (((min - 30) / 30) & 0xf) << 8;
+}
+
+static int wm8350_get_supplies(struct wm8350 *wm8350)
+{
+ u16 sm, ov, co, chrg;
+ int supplies = 0;
+
+ sm = wm8350_reg_read(wm8350, WM8350_STATE_MACHINE_STATUS);
+ ov = wm8350_reg_read(wm8350, WM8350_MISC_OVERRIDES);
+ co = wm8350_reg_read(wm8350, WM8350_COMPARATOR_OVERRIDES);
+ chrg = wm8350_reg_read(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2);
+
+ /* USB_SM */
+ sm = (sm & WM8350_USB_SM_MASK) >> WM8350_USB_SM_SHIFT;
+
+ /* CHG_ISEL */
+ chrg &= WM8350_CHG_ISEL_MASK;
+
+ /* If the USB state machine is active then we're using that with or
+ * without battery, otherwise check for wall supply */
+ if (((sm == WM8350_USB_SM_100_SLV) ||
+ (sm == WM8350_USB_SM_500_SLV) ||
+ (sm == WM8350_USB_SM_STDBY_SLV))
+ && !(ov & WM8350_USB_LIMIT_OVRDE))
+ supplies = WM8350_USB_SUPPLY;
+ else if (((sm == WM8350_USB_SM_100_SLV) ||
+ (sm == WM8350_USB_SM_500_SLV) ||
+ (sm == WM8350_USB_SM_STDBY_SLV))
+ && (ov & WM8350_USB_LIMIT_OVRDE) && (chrg == 0))
+ supplies = WM8350_USB_SUPPLY | WM8350_BATT_SUPPLY;
+ else if (co & WM8350_WALL_FB_OVRDE)
+ supplies = WM8350_LINE_SUPPLY;
+ else
+ supplies = WM8350_BATT_SUPPLY;
+
+ return supplies;
+}
+
+static int wm8350_charger_config(struct wm8350 *wm8350,
+ struct wm8350_charger_policy *policy)
+{
+ u16 reg, eoc_mA, fast_limit_mA;
+
+ if (!policy) {
+ dev_warn(wm8350->dev,
+ "No charger policy, charger not configured.\n");
+ return -EINVAL;
+ }
+
+ /* make sure USB fast charge current is not > 500mA */
+ if (policy->fast_limit_USB_mA > 500) {
+ dev_err(wm8350->dev, "USB fast charge > 500mA\n");
+ return -EINVAL;
+ }
+
+ eoc_mA = WM8350_CHG_EOC_mA(policy->eoc_mA);
+
+ wm8350_reg_unlock(wm8350);
+
+ reg = wm8350_reg_read(wm8350, WM8350_BATTERY_CHARGER_CONTROL_1)
+ & WM8350_CHG_ENA_R168;
+ wm8350_reg_write(wm8350, WM8350_BATTERY_CHARGER_CONTROL_1,
+ reg | eoc_mA | policy->trickle_start_mV |
+ WM8350_CHG_TRICKLE_TEMP_CHOKE |
+ WM8350_CHG_TRICKLE_USB_CHOKE |
+ WM8350_CHG_FAST_USB_THROTTLE);
+
+ if (wm8350_get_supplies(wm8350) & WM8350_USB_SUPPLY) {
+ fast_limit_mA =
+ WM8350_CHG_FAST_LIMIT_mA(policy->fast_limit_USB_mA);
+ wm8350_reg_write(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2,
+ policy->charge_mV | policy->trickle_charge_USB_mA |
+ fast_limit_mA | wm8350_charge_time_min(wm8350,
+ policy->charge_timeout));
+
+ } else {
+ fast_limit_mA =
+ WM8350_CHG_FAST_LIMIT_mA(policy->fast_limit_mA);
+ wm8350_reg_write(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2,
+ policy->charge_mV | policy->trickle_charge_mA |
+ fast_limit_mA | wm8350_charge_time_min(wm8350,
+ policy->charge_timeout));
+ }
+
+ wm8350_reg_lock(wm8350);
+ return 0;
+}
+
+static int wm8350_batt_status(struct wm8350 *wm8350)
+{
+ u16 state;
+
+ state = wm8350_reg_read(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2);
+ state &= WM8350_CHG_STS_MASK;
+
+ switch (state) {
+ case WM8350_CHG_STS_OFF:
+ return POWER_SUPPLY_STATUS_DISCHARGING;
+
+ case WM8350_CHG_STS_TRICKLE:
+ case WM8350_CHG_STS_FAST:
+ return POWER_SUPPLY_STATUS_CHARGING;
+
+ default:
+ return POWER_SUPPLY_STATUS_UNKNOWN;
+ }
+}
+
+static ssize_t charger_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct wm8350 *wm8350 = dev_get_drvdata(dev);
+ char *charge;
+ int state;
+
+ state = wm8350_reg_read(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2) &
+ WM8350_CHG_STS_MASK;
+ switch (state) {
+ case WM8350_CHG_STS_OFF:
+ charge = "Charger Off";
+ break;
+ case WM8350_CHG_STS_TRICKLE:
+ charge = "Trickle Charging";
+ break;
+ case WM8350_CHG_STS_FAST:
+ charge = "Fast Charging";
+ break;
+ default:
+ return 0;
+ }
+
+ return sprintf(buf, "%s\n", charge);
+}
+
+static DEVICE_ATTR(charger_state, 0444, charger_state_show, NULL);
+
+static irqreturn_t wm8350_charger_handler(int irq, void *data)
+{
+ struct wm8350 *wm8350 = data;
+ struct wm8350_power *power = &wm8350->power;
+ struct wm8350_charger_policy *policy = power->policy;
+
+ switch (irq - wm8350->irq_base) {
+ case WM8350_IRQ_CHG_BAT_FAIL:
+ dev_err(wm8350->dev, "battery failed\n");
+ break;
+ case WM8350_IRQ_CHG_TO:
+ dev_err(wm8350->dev, "charger timeout\n");
+ power_supply_changed(&power->battery);
+ break;
+
+ case WM8350_IRQ_CHG_BAT_HOT:
+ case WM8350_IRQ_CHG_BAT_COLD:
+ case WM8350_IRQ_CHG_START:
+ case WM8350_IRQ_CHG_END:
+ power_supply_changed(&power->battery);
+ break;
+
+ case WM8350_IRQ_CHG_FAST_RDY:
+ dev_dbg(wm8350->dev, "fast charger ready\n");
+ wm8350_charger_config(wm8350, policy);
+ wm8350_reg_unlock(wm8350);
+ wm8350_set_bits(wm8350, WM8350_BATTERY_CHARGER_CONTROL_1,
+ WM8350_CHG_FAST);
+ wm8350_reg_lock(wm8350);
+ break;
+
+ case WM8350_IRQ_CHG_VBATT_LT_3P9:
+ dev_warn(wm8350->dev, "battery < 3.9V\n");
+ break;
+ case WM8350_IRQ_CHG_VBATT_LT_3P1:
+ dev_warn(wm8350->dev, "battery < 3.1V\n");
+ break;
+ case WM8350_IRQ_CHG_VBATT_LT_2P85:
+ dev_warn(wm8350->dev, "battery < 2.85V\n");
+ break;
+
+ /* Supply change. We will overnotify but it should do
+ * no harm. */
+ case WM8350_IRQ_EXT_USB_FB:
+ case WM8350_IRQ_EXT_WALL_FB:
+ wm8350_charger_config(wm8350, policy);
+ case WM8350_IRQ_EXT_BAT_FB: /* Fall through */
+ power_supply_changed(&power->battery);
+ power_supply_changed(&power->usb);
+ power_supply_changed(&power->ac);
+ break;
+
+ default:
+ dev_err(wm8350->dev, "Unknown interrupt %d\n", irq);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/*********************************************************************
+ * AC Power
+ *********************************************************************/
+static int wm8350_ac_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm8350 *wm8350 = dev_get_drvdata(psy->dev->parent);
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = !!(wm8350_get_supplies(wm8350) &
+ WM8350_LINE_SUPPLY);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = wm8350_read_line_uvolts(wm8350);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static enum power_supply_property wm8350_ac_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+};
+
+/*********************************************************************
+ * USB Power
+ *********************************************************************/
+static int wm8350_usb_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm8350 *wm8350 = dev_get_drvdata(psy->dev->parent);
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = !!(wm8350_get_supplies(wm8350) &
+ WM8350_USB_SUPPLY);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = wm8350_read_usb_uvolts(wm8350);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static enum power_supply_property wm8350_usb_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+};
+
+/*********************************************************************
+ * Battery properties
+ *********************************************************************/
+
+static int wm8350_bat_check_health(struct wm8350 *wm8350)
+{
+ u16 reg;
+
+ if (wm8350_read_battery_uvolts(wm8350) < 2850000)
+ return POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+
+ reg = wm8350_reg_read(wm8350, WM8350_CHARGER_OVERRIDES);
+ if (reg & WM8350_CHG_BATT_HOT_OVRDE)
+ return POWER_SUPPLY_HEALTH_OVERHEAT;
+
+ if (reg & WM8350_CHG_BATT_COLD_OVRDE)
+ return POWER_SUPPLY_HEALTH_COLD;
+
+ return POWER_SUPPLY_HEALTH_GOOD;
+}
+
+static int wm8350_bat_get_charge_type(struct wm8350 *wm8350)
+{
+ int state;
+
+ state = wm8350_reg_read(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2) &
+ WM8350_CHG_STS_MASK;
+ switch (state) {
+ case WM8350_CHG_STS_OFF:
+ return POWER_SUPPLY_CHARGE_TYPE_NONE;
+ case WM8350_CHG_STS_TRICKLE:
+ return POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ case WM8350_CHG_STS_FAST:
+ return POWER_SUPPLY_CHARGE_TYPE_FAST;
+ default:
+ return POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
+ }
+}
+
+static int wm8350_bat_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm8350 *wm8350 = dev_get_drvdata(psy->dev->parent);
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = wm8350_batt_status(wm8350);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = !!(wm8350_get_supplies(wm8350) &
+ WM8350_BATT_SUPPLY);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = wm8350_read_battery_uvolts(wm8350);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ val->intval = wm8350_bat_check_health(wm8350);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ val->intval = wm8350_bat_get_charge_type(wm8350);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property wm8350_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+};
+
+/*********************************************************************
+ * Initialisation
+ *********************************************************************/
+
+static void wm8350_init_charger(struct wm8350 *wm8350)
+{
+ /* register our interest in charger events */
+ wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_HOT,
+ wm8350_charger_handler, 0, "Battery hot", wm8350);
+ wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_COLD,
+ wm8350_charger_handler, 0, "Battery cold", wm8350);
+ wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_FAIL,
+ wm8350_charger_handler, 0, "Battery fail", wm8350);
+ wm8350_register_irq(wm8350, WM8350_IRQ_CHG_TO,
+ wm8350_charger_handler, 0,
+ "Charger timeout", wm8350);
+ wm8350_register_irq(wm8350, WM8350_IRQ_CHG_END,
+ wm8350_charger_handler, 0,
+ "Charge end", wm8350);
+ wm8350_register_irq(wm8350, WM8350_IRQ_CHG_START,
+ wm8350_charger_handler, 0,
+ "Charge start", wm8350);
+ wm8350_register_irq(wm8350, WM8350_IRQ_CHG_FAST_RDY,
+ wm8350_charger_handler, 0,
+ "Fast charge ready", wm8350);
+ wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9,
+ wm8350_charger_handler, 0,
+ "Battery <3.9V", wm8350);
+ wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1,
+ wm8350_charger_handler, 0,
+ "Battery <3.1V", wm8350);
+ wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85,
+ wm8350_charger_handler, 0,
+ "Battery <2.85V", wm8350);
+
+ /* and supply change events */
+ wm8350_register_irq(wm8350, WM8350_IRQ_EXT_USB_FB,
+ wm8350_charger_handler, 0, "USB", wm8350);
+ wm8350_register_irq(wm8350, WM8350_IRQ_EXT_WALL_FB,
+ wm8350_charger_handler, 0, "Wall", wm8350);
+ wm8350_register_irq(wm8350, WM8350_IRQ_EXT_BAT_FB,
+ wm8350_charger_handler, 0, "Battery", wm8350);
+}
+
+static void free_charger_irq(struct wm8350 *wm8350)
+{
+ wm8350_free_irq(wm8350, WM8350_IRQ_CHG_BAT_HOT, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_CHG_BAT_COLD, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_CHG_BAT_FAIL, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_CHG_TO, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_CHG_END, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_CHG_START, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_EXT_USB_FB, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_EXT_WALL_FB, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_EXT_BAT_FB, wm8350);
+}
+
+static __devinit int wm8350_power_probe(struct platform_device *pdev)
+{
+ struct wm8350 *wm8350 = platform_get_drvdata(pdev);
+ struct wm8350_power *power = &wm8350->power;
+ struct wm8350_charger_policy *policy = power->policy;
+ struct power_supply *usb = &power->usb;
+ struct power_supply *battery = &power->battery;
+ struct power_supply *ac = &power->ac;
+ int ret;
+
+ ac->name = "wm8350-ac";
+ ac->type = POWER_SUPPLY_TYPE_MAINS;
+ ac->properties = wm8350_ac_props;
+ ac->num_properties = ARRAY_SIZE(wm8350_ac_props);
+ ac->get_property = wm8350_ac_get_prop;
+ ret = power_supply_register(&pdev->dev, ac);
+ if (ret)
+ return ret;
+
+ battery->name = "wm8350-battery";
+ battery->properties = wm8350_bat_props;
+ battery->num_properties = ARRAY_SIZE(wm8350_bat_props);
+ battery->get_property = wm8350_bat_get_property;
+ battery->use_for_apm = 1;
+ ret = power_supply_register(&pdev->dev, battery);
+ if (ret)
+ goto battery_failed;
+
+ usb->name = "wm8350-usb",
+ usb->type = POWER_SUPPLY_TYPE_USB;
+ usb->properties = wm8350_usb_props;
+ usb->num_properties = ARRAY_SIZE(wm8350_usb_props);
+ usb->get_property = wm8350_usb_get_prop;
+ ret = power_supply_register(&pdev->dev, usb);
+ if (ret)
+ goto usb_failed;
+
+ ret = device_create_file(&pdev->dev, &dev_attr_charger_state);
+ if (ret < 0)
+ dev_warn(wm8350->dev, "failed to add charge sysfs: %d\n", ret);
+ ret = 0;
+
+ wm8350_init_charger(wm8350);
+ if (wm8350_charger_config(wm8350, policy) == 0) {
+ wm8350_reg_unlock(wm8350);
+ wm8350_set_bits(wm8350, WM8350_POWER_MGMT_5, WM8350_CHG_ENA);
+ wm8350_reg_lock(wm8350);
+ }
+
+ return ret;
+
+usb_failed:
+ power_supply_unregister(battery);
+battery_failed:
+ power_supply_unregister(ac);
+
+ return ret;
+}
+
+static __devexit int wm8350_power_remove(struct platform_device *pdev)
+{
+ struct wm8350 *wm8350 = platform_get_drvdata(pdev);
+ struct wm8350_power *power = &wm8350->power;
+
+ free_charger_irq(wm8350);
+ device_remove_file(&pdev->dev, &dev_attr_charger_state);
+ power_supply_unregister(&power->battery);
+ power_supply_unregister(&power->ac);
+ power_supply_unregister(&power->usb);
+ return 0;
+}
+
+static struct platform_driver wm8350_power_driver = {
+ .probe = wm8350_power_probe,
+ .remove = __devexit_p(wm8350_power_remove),
+ .driver = {
+ .name = "wm8350-power",
+ },
+};
+
+module_platform_driver(wm8350_power_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Power supply driver for WM8350");
+MODULE_ALIAS("platform:wm8350-power");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/wm97xx_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/wm97xx_battery.c
new file mode 100644
index 0000000..d2d4c08
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/wm97xx_battery.c
@@ -0,0 +1,295 @@
+/*
+ * linux/drivers/power/wm97xx_battery.c
+ *
+ * Battery measurement code for WM97xx
+ *
+ * based on tosa_battery.c
+ *
+ * Copyright (C) 2008 Marek Vasut <marek.vasut@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/wm97xx.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+#include <linux/irq.h>
+#include <linux/slab.h>
+
+static struct work_struct bat_work;
+static DEFINE_MUTEX(work_lock);
+static int bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
+static enum power_supply_property *prop;
+
+static unsigned long wm97xx_read_bat(struct power_supply *bat_ps)
+{
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
+ return wm97xx_read_aux_adc(dev_get_drvdata(bat_ps->dev->parent),
+ pdata->batt_aux) * pdata->batt_mult /
+ pdata->batt_div;
+}
+
+static unsigned long wm97xx_read_temp(struct power_supply *bat_ps)
+{
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
+ return wm97xx_read_aux_adc(dev_get_drvdata(bat_ps->dev->parent),
+ pdata->temp_aux) * pdata->temp_mult /
+ pdata->temp_div;
+}
+
+static int wm97xx_bat_get_property(struct power_supply *bat_ps,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = bat_status;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = pdata->batt_tech;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ if (pdata->batt_aux >= 0)
+ val->intval = wm97xx_read_bat(bat_ps);
+ else
+ return -EINVAL;
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ if (pdata->temp_aux >= 0)
+ val->intval = wm97xx_read_temp(bat_ps);
+ else
+ return -EINVAL;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ if (pdata->max_voltage >= 0)
+ val->intval = pdata->max_voltage;
+ else
+ return -EINVAL;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+ if (pdata->min_voltage >= 0)
+ val->intval = pdata->min_voltage;
+ else
+ return -EINVAL;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static void wm97xx_bat_external_power_changed(struct power_supply *bat_ps)
+{
+ schedule_work(&bat_work);
+}
+
+static void wm97xx_bat_update(struct power_supply *bat_ps)
+{
+ int old_status = bat_status;
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
+ mutex_lock(&work_lock);
+
+ bat_status = (pdata->charge_gpio >= 0) ?
+ (gpio_get_value(pdata->charge_gpio) ?
+ POWER_SUPPLY_STATUS_DISCHARGING :
+ POWER_SUPPLY_STATUS_CHARGING) :
+ POWER_SUPPLY_STATUS_UNKNOWN;
+
+ if (old_status != bat_status) {
+ pr_debug("%s: %i -> %i\n", bat_ps->name, old_status,
+ bat_status);
+ power_supply_changed(bat_ps);
+ }
+
+ mutex_unlock(&work_lock);
+}
+
+static struct power_supply bat_ps = {
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .get_property = wm97xx_bat_get_property,
+ .external_power_changed = wm97xx_bat_external_power_changed,
+ .use_for_apm = 1,
+};
+
+static void wm97xx_bat_work(struct work_struct *work)
+{
+ wm97xx_bat_update(&bat_ps);
+}
+
+static irqreturn_t wm97xx_chrg_irq(int irq, void *data)
+{
+ schedule_work(&bat_work);
+ return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_PM
+static int wm97xx_bat_suspend(struct device *dev)
+{
+ flush_work_sync(&bat_work);
+ return 0;
+}
+
+static int wm97xx_bat_resume(struct device *dev)
+{
+ schedule_work(&bat_work);
+ return 0;
+}
+
+static const struct dev_pm_ops wm97xx_bat_pm_ops = {
+ .suspend = wm97xx_bat_suspend,
+ .resume = wm97xx_bat_resume,
+};
+#endif
+
+static int __devinit wm97xx_bat_probe(struct platform_device *dev)
+{
+ int ret = 0;
+ int props = 1; /* POWER_SUPPLY_PROP_PRESENT */
+ int i = 0;
+ struct wm97xx_pdata *wmdata = dev->dev.platform_data;
+ struct wm97xx_batt_pdata *pdata;
+
+ if (!wmdata) {
+ dev_err(&dev->dev, "No platform data supplied\n");
+ return -EINVAL;
+ }
+
+ pdata = wmdata->batt_pdata;
+
+ if (dev->id != -1)
+ return -EINVAL;
+
+ if (!pdata) {
+ dev_err(&dev->dev, "No platform_data supplied\n");
+ return -EINVAL;
+ }
+
+ if (gpio_is_valid(pdata->charge_gpio)) {
+ ret = gpio_request(pdata->charge_gpio, "BATT CHRG");
+ if (ret)
+ goto err;
+ ret = gpio_direction_input(pdata->charge_gpio);
+ if (ret)
+ goto err2;
+ ret = request_irq(gpio_to_irq(pdata->charge_gpio),
+ wm97xx_chrg_irq, 0,
+ "AC Detect", dev);
+ if (ret)
+ goto err2;
+ props++; /* POWER_SUPPLY_PROP_STATUS */
+ }
+
+ if (pdata->batt_tech >= 0)
+ props++; /* POWER_SUPPLY_PROP_TECHNOLOGY */
+ if (pdata->temp_aux >= 0)
+ props++; /* POWER_SUPPLY_PROP_TEMP */
+ if (pdata->batt_aux >= 0)
+ props++; /* POWER_SUPPLY_PROP_VOLTAGE_NOW */
+ if (pdata->max_voltage >= 0)
+ props++; /* POWER_SUPPLY_PROP_VOLTAGE_MAX */
+ if (pdata->min_voltage >= 0)
+ props++; /* POWER_SUPPLY_PROP_VOLTAGE_MIN */
+
+ prop = kzalloc(props * sizeof(*prop), GFP_KERNEL);
+ if (!prop)
+ goto err3;
+
+ prop[i++] = POWER_SUPPLY_PROP_PRESENT;
+ if (pdata->charge_gpio >= 0)
+ prop[i++] = POWER_SUPPLY_PROP_STATUS;
+ if (pdata->batt_tech >= 0)
+ prop[i++] = POWER_SUPPLY_PROP_TECHNOLOGY;
+ if (pdata->temp_aux >= 0)
+ prop[i++] = POWER_SUPPLY_PROP_TEMP;
+ if (pdata->batt_aux >= 0)
+ prop[i++] = POWER_SUPPLY_PROP_VOLTAGE_NOW;
+ if (pdata->max_voltage >= 0)
+ prop[i++] = POWER_SUPPLY_PROP_VOLTAGE_MAX;
+ if (pdata->min_voltage >= 0)
+ prop[i++] = POWER_SUPPLY_PROP_VOLTAGE_MIN;
+
+ INIT_WORK(&bat_work, wm97xx_bat_work);
+
+ if (!pdata->batt_name) {
+ dev_info(&dev->dev, "Please consider setting proper battery "
+ "name in platform definition file, falling "
+ "back to name \"wm97xx-batt\"\n");
+ bat_ps.name = "wm97xx-batt";
+ } else
+ bat_ps.name = pdata->batt_name;
+
+ bat_ps.properties = prop;
+ bat_ps.num_properties = props;
+
+ ret = power_supply_register(&dev->dev, &bat_ps);
+ if (!ret)
+ schedule_work(&bat_work);
+ else
+ goto err4;
+
+ return 0;
+err4:
+ kfree(prop);
+err3:
+ if (gpio_is_valid(pdata->charge_gpio))
+ free_irq(gpio_to_irq(pdata->charge_gpio), dev);
+err2:
+ if (gpio_is_valid(pdata->charge_gpio))
+ gpio_free(pdata->charge_gpio);
+err:
+ return ret;
+}
+
+static int __devexit wm97xx_bat_remove(struct platform_device *dev)
+{
+ struct wm97xx_pdata *wmdata = dev->dev.platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
+ if (pdata && gpio_is_valid(pdata->charge_gpio)) {
+ free_irq(gpio_to_irq(pdata->charge_gpio), dev);
+ gpio_free(pdata->charge_gpio);
+ }
+ cancel_work_sync(&bat_work);
+ power_supply_unregister(&bat_ps);
+ kfree(prop);
+ return 0;
+}
+
+static struct platform_driver wm97xx_bat_driver = {
+ .driver = {
+ .name = "wm97xx-battery",
+ .owner = THIS_MODULE,
+#ifdef CONFIG_PM
+ .pm = &wm97xx_bat_pm_ops,
+#endif
+ },
+ .probe = wm97xx_bat_probe,
+ .remove = __devexit_p(wm97xx_bat_remove),
+};
+
+module_platform_driver(wm97xx_bat_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
+MODULE_DESCRIPTION("WM97xx battery driver");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/xc5071_charger.c b/ap/os/linux/linux-3.4.x/drivers/power/xc5071_charger.c
new file mode 100644
index 0000000..b20b8a4
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/xc5071_charger.c
@@ -0,0 +1,1066 @@
+/*
+ * Driver for the TI zx234502 battery charger.
+ *
+ * Author: Mark A. Greer <mgreer@animalcreek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/of_irq.h>
+#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/power_supply.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/kthread.h>
+//#include <linux/mutex.h>
+#include <linux/semaphore.h>
+
+#include <linux/power/aw3215_charger.h>
+#include <linux/mfd/zx234290.h>
+
+#include <mach/gpio.h>
+#include <mach/pcu.h>
+#include <mach/zx29_usb.h>
+#include <linux/workqueue.h>
+
+#include <linux/slab.h>
+#include <linux/debugfs.h>
+#include <asm/uaccess.h>
+#include <linux/wakelock.h>
+
+#define USB_IN GPIO_HIGH
+#define USB_OUT GPIO_LOW
+#define IRQ_TYPE_USB_OUT IRQ_TYPE_LEVEL_LOW
+#define IRQ_TYPE_USB_IN IRQ_TYPE_LEVEL_HIGH
+
+#define CHG_START GPIO_LOW
+#define CHG_STOP GPIO_HIGH
+
+#define CHG_EN_TYPE GPIO_HIGH
+#define CHG_DISEN_TYPE GPIO_LOW
+/*
+ * The FAULT register is latched by the zx234502 (except for NTC_FAULT)
+ * so the first read after a fault returns the latched value and subsequent
+ * reads return the current value. In order to return the fault status
+ * to the user, have the interrupt handler save the reg's value and retrieve
+ * it in the appropriate health/status routine. Each routine has its own
+ * flag indicating whether it should use the value stored by the last run
+ * of the interrupt handler or do an actual reg read. That way each routine
+ * can report back whatever fault may have occured.
+ */
+ enum chg_stop_reason{
+ CHG_STOP_REASON_NO = 0,
+ CHG_STOP_REASON_TEMP= 1,
+ CHG_STOP_REASON_FULL = 2,
+ CHG_STOP_DEFALT= 0xff
+};
+struct aw3215_dev_info {
+ struct device *dev;
+ struct power_supply charger;
+ struct power_supply battery;
+
+ kernel_ulong_t model;
+ unsigned int chgin_irq;
+ unsigned int chgstate_irq;
+ struct task_struct *chgin_irq_thread;
+ struct task_struct *chgstate_irq_thread;
+
+ u8 watchdog;
+
+ struct aw3215_platform_data *pdata;
+ unsigned int chgin_type;
+ unsigned int chgstate_type;
+ bool chg_en;
+ unsigned int chg_state;
+ struct semaphore chgin_sem;
+ struct semaphore chgstate_sem;
+ enum chg_stop_reason stopchg_flag;
+ struct timer_list changed_timer;
+ struct wake_lock wlock_chgfull;
+
+};
+
+struct aw3215_dev_info *g_bdi = NULL;
+
+/* Charger power supply property routines */
+
+static int aw3215_charger_get_charge_type(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = bdi->charger.type;
+ return 0;
+}
+
+static int aw3215_charger_get_status(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+#if 1
+ val->intval = bdi->chg_state;
+#else
+ if(false==bdi->chg_en){
+ val->intval=POWER_SUPPLY_STATUS_NOT_CHARGING;/*diaable chg*/
+ return 0;
+ }
+ if (USB_IN==bdi->chgin_type) {
+ if(CHG_STOP==bdi->chgstate_type)
+ val->intval= POWER_SUPPLY_STATUS_FULL;
+ else if (CHG_START==bdi->chgstate_type)
+ val->intval= POWER_SUPPLY_STATUS_CHARGING;
+ else
+ val->intval=POWER_SUPPLY_STATUS_NOT_CHARGING;/*diaable chg*/
+ } else {
+ val->intval=POWER_SUPPLY_STATUS_DISCHARGING;/*usb not insert*/
+ }
+#endif
+ return 0;
+}
+
+static int aw3215_charger_get_health(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+
+ return 0;
+}
+
+int aw3215_charger_get_online(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ if (USB_IN==bdi->chgin_type) {
+ val->intval= 1;
+ } else {
+ val->intval=0;/*usb not insert*/
+ }
+
+ return 0;
+}EXPORT_SYMBOL (aw3215_charger_get_online);
+
+
+static int aw3215_charger_get_charger_enabled(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = bdi->chg_en;
+
+ return 0;
+}
+static int aw3215_charger_get_voltage_max(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = 4200;
+
+ return 0;
+}
+
+static int aw3215_charger_set_voltage(struct aw3215_dev_info *bdi,const union power_supply_propval *val)
+{
+ return 0;
+}
+static int aw3215_charger_set_charger_config(struct aw3215_dev_info *bdi,const union power_supply_propval *val)
+{
+ int ret = 0;
+ int gpio_state = 0;
+
+ if (val->intval==1) {
+ if (bdi->chg_en)
+ return 0;
+ gpio_state = CHG_EN_TYPE ;/*gpio low en chg*/
+ printk("mmi start chg\n");
+ } else {
+ if (!bdi->chg_en)
+ return 0;
+ gpio_state = CHG_DISEN_TYPE ;/*gpio high stop chg*/
+ printk("mmi stop chg\n");
+ }
+
+ disable_irq(bdi->chgstate_irq);
+
+ if (gpio_state == CHG_EN_TYPE) {
+ bdi->chg_en = true; /*(~gpio_state)*/
+ bdi->chgstate_type = CHG_START;
+ bdi->stopchg_flag = CHG_STOP_REASON_NO;
+ gpio_set_value(bdi->pdata->gpio_chgen, gpio_state);
+
+ if (bdi->chgin_type == USB_IN) {
+ bdi->chg_state = POWER_SUPPLY_STATUS_CHARGING;
+ /* start charging in 5.3ms after enable */
+ if (gpio_get_value(bdi->pdata->gpio_chgstate))
+ mdelay(7);
+ if (gpio_get_value(bdi->pdata->gpio_chgstate))
+ printk(KERN_INFO "chg still not chargin"); /* should not go here */
+
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_HIGH);
+
+ }
+ } else {
+ bdi->chg_en = false;
+ bdi->chgstate_type = CHG_STOP;
+ bdi->stopchg_flag = CHG_STOP_REASON_TEMP;
+ if (2==val->intval){/*chg full stop*/
+ bdi->stopchg_flag = CHG_STOP_REASON_FULL;
+ bdi->chg_state = POWER_SUPPLY_STATUS_FULL;
+ printk("mmi full stop chg\n");
+
+ }
+ else if (bdi->chgin_type == USB_IN)
+ bdi->chg_state = POWER_SUPPLY_STATUS_NOT_CHARGING;
+
+ gpio_set_value(bdi->pdata->gpio_chgen, gpio_state);
+ /* charger state changes from 0 to 1 in 0.12ms */
+ if (!gpio_get_value(bdi->pdata->gpio_chgstate))
+ udelay(500);
+
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_LOW);
+
+ }
+
+ enable_irq(bdi->chgstate_irq);
+
+ power_supply_changed(&bdi->charger);
+
+ return ret;
+}
+
+
+static int aw3215_charger_get_property(struct power_supply *psy,enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct aw3215_dev_info *bdi = container_of(psy, struct aw3215_dev_info, charger);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PC1_AC2:
+ ret = aw3215_charger_get_charge_type(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = aw3215_charger_get_status(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = aw3215_charger_get_health(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = aw3215_charger_get_online(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ ret = aw3215_charger_get_voltage_max(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = aw3215_charger_get_charger_enabled(bdi, val);
+ break;
+ default:
+ ret = -ENODATA;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int aw3215_charger_set_property(struct power_supply *psy,enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct aw3215_dev_info *bdi =
+ container_of(psy, struct aw3215_dev_info, charger);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+#if 0
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = zx234502_charger_set_current(bdi, val);
+ break;
+#endif
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ ret = aw3215_charger_set_voltage(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = aw3215_charger_set_charger_config(bdi, val);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int aw3215_charger_property_is_writeable(struct power_supply *psy,enum power_supply_property psp)
+{
+ int ret;
+
+ switch (psp)
+ {
+ //case POWER_SUPPLY_PROP_CURRENT_NOW:
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = 1;
+ break;
+ default:
+ ret = 0;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property aw3215_charger_properties[] = {
+ POWER_SUPPLY_PROP_PC1_AC2,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_ONLINE,
+ //POWER_SUPPLY_PROP_CURRENT_NOW,
+ //POWER_SUPPLY_PROP_CURRENT_MAX,
+ //POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_CHARGE_ENABLED,
+};
+
+static char *aw3215_charger_supplied_to[] = {
+ "main-battery",
+};
+
+static void aw3215_charger_init(struct power_supply *charger)
+{
+ charger->name = "charger";
+ charger->type = POWER_SUPPLY_PCAC_UNKNOWN;
+ charger->properties = aw3215_charger_properties;
+ charger->num_properties = ARRAY_SIZE(aw3215_charger_properties);
+ charger->supplied_to = aw3215_charger_supplied_to;
+ //charger->num_supplies = ARRAY_SIZE(aw3215_charger_supplied_to);
+ charger->get_property = aw3215_charger_get_property;
+ charger->set_property = aw3215_charger_set_property;
+ charger->property_is_writeable = aw3215_charger_property_is_writeable;
+}
+
+/* Battery power supply property routines */
+
+static int aw3215_battery_get_health(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+
+ return 0;
+}
+
+static int aw3215_battery_get_online(struct aw3215_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = 1;/*bat on*/
+
+ return 0;
+}
+
+static int aw3215_battery_set_online(struct aw3215_dev_info *bdi,const union power_supply_propval *val)
+{
+ return 0;
+}
+
+
+static int aw3215_battery_get_property(struct power_supply *psy,enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct aw3215_dev_info *bdi =
+ container_of(psy, struct aw3215_dev_info, battery);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = aw3215_battery_get_health(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = aw3215_battery_get_online(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = get_adc2_voltage();
+ ret = 0;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ //#ifdef CONFIG_ZX234290_ADC
+ val->intval = get_adc1_voltage() - 15;
+ ret = 0;
+ break;
+ default:
+ ret = -ENODATA;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int aw3215_battery_set_property(struct power_supply *psy,enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct aw3215_dev_info *bdi =
+ container_of(psy, struct aw3215_dev_info, battery);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_put_sync(bdi->dev);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = aw3215_battery_set_online(bdi, val);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int aw3215_battery_property_is_writeable(struct power_supply *psy,enum power_supply_property psp)
+{
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = 1;
+ break;
+ default:
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property aw3215_battery_properties[] = {
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ //POWER_SUPPLY_PROP_CAPACITY,
+};
+
+static void aw3215_battery_init(struct power_supply *battery)
+{
+ battery->name = "battery";
+ battery->type = POWER_SUPPLY_PCAC_UNKNOWN;
+ battery->properties = aw3215_battery_properties;
+ battery->num_properties = ARRAY_SIZE(aw3215_battery_properties);
+ battery->get_property = aw3215_battery_get_property;
+ battery->set_property = aw3215_battery_set_property;
+ battery->property_is_writeable = aw3215_battery_property_is_writeable;
+}
+
+#if 1
+static irqreturn_t aw3215_charger_in_irq_primary_handler(int irq, struct aw3215_dev_info * bdi)
+{
+ disable_irq_nosync(irq);
+ //pcu_int_clear(irq);
+ pcu_clr_irq_pending(irq);
+ up(&bdi->chgin_sem);
+
+ return IRQ_HANDLED;
+}
+static irqreturn_t aw3215_charger_state_irq_primary_handler(int irq, struct aw3215_dev_info * bdi)
+{
+ disable_irq_nosync(irq);
+ //pcu_int_clear(irq);
+ pcu_clr_irq_pending(irq);
+ up(&bdi->chgstate_sem);
+
+ return IRQ_HANDLED;
+}
+
+#endif
+
+static irqreturn_t aw3215_chgin_irq_handler_thread(void *data)
+{
+ struct aw3215_dev_info *bdi = data;
+ struct aw3215_platform_data *pdata = bdi->pdata;
+ int g_gpio_in =0;
+ struct sched_param param = { .sched_priority = 2 };
+
+ param.sched_priority= 31;
+ sched_setscheduler(current, SCHED_FIFO, ¶m);
+
+ while(1)
+ {
+ down(&bdi->chgin_sem);
+
+ g_gpio_in = gpio_get_value(pdata->gpio_chgin);
+
+ /*charging status*/
+ if (g_gpio_in == USB_IN) {
+ if (bdi->chgin_type == USB_IN) {
+ printk(KERN_INFO"chg usb in err\n");
+ }
+ else if (bdi->stopchg_flag == CHG_STOP_REASON_TEMP){
+ bdi->chgin_type = USB_IN;
+ printk(KERN_INFO"chg usb in temp err\n");
+ bdi->chg_state = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ dwc_otg_chg_inform(0);/*usb in*/
+ }
+ else{
+ bdi->chgin_type = USB_IN;
+
+ disable_irq(bdi->chgstate_irq);
+ //gpio_set_value(pdata->gpio_chgen, CHG_EN_TYPE);
+ //bdi->chg_en = true;
+ //bdi->chgstate_type = CHG_START;
+
+ /* start charging in 5.3ms after enable */
+ if (gpio_get_value(pdata->gpio_chgstate))
+ mdelay(7);
+ if (bdi->chgstate_type == gpio_get_value(pdata->gpio_chgstate))
+ printk(KERN_INFO "chg still not chargin"); /* should not go here */
+
+ bdi->chg_state = POWER_SUPPLY_STATUS_CHARGING;
+
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_HIGH);
+
+ enable_irq(bdi->chgstate_irq);
+
+ printk(KERN_INFO"chg usb in\n");
+ dwc_otg_chg_inform(0);/*usb in*/
+
+ //irq_set_irq_type(bdi->chgin_irq, IRQ_TYPE_LEVEL_HIGH);
+ }
+ irq_set_irq_type(bdi->chgin_irq, IRQ_TYPE_USB_OUT/*IRQ_TYPE_LEVEL_HIGH*/);
+ } else {
+ bdi->chg_state = POWER_SUPPLY_STATUS_DISCHARGING;
+ if (bdi->chgin_type == USB_OUT) {
+ printk(KERN_INFO"chg usb out err\n");
+ } else {
+ bdi->chgin_type = USB_OUT;
+ //SINT32 Usb_plug = DISCONNECTED_FROM_HOST;
+ printk(KERN_INFO"chg usb out\n");
+ dwc_otg_chg_inform(1);/*usb out*/
+ //irq_set_irq_type(bdi->chgin_irq, IRQ_TYPE_LEVEL_LOW);
+ }
+
+ irq_set_irq_type(bdi->chgin_irq, IRQ_TYPE_USB_IN/*IRQ_TYPE_LEVEL_LOW*/);
+ }
+
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+ enable_irq(bdi->chgin_irq);
+
+ }
+ return 0;
+}
+
+static irqreturn_t aw3215_chgstate_irq_handler_thread(void *data)
+{
+ struct aw3215_dev_info *bdi = data;
+ struct aw3215_platform_data *pdata = bdi->pdata;
+ //unsigned int state_rcd = bdi->chg_state;
+ int g_gpio_state=CHG_STOP;
+ uint adc1_v= 0;
+ struct sched_param param = { .sched_priority = 2 };
+
+ param.sched_priority= 31;
+ sched_setscheduler(current, SCHED_FIFO, ¶m);
+
+ while(1)
+ {
+ down(&bdi->chgstate_sem);
+
+ g_gpio_state = gpio_get_value(pdata->gpio_chgstate);
+
+ /*charging status*/
+ if (g_gpio_state == CHG_START) { /*low charging*/
+ bdi->chg_state = POWER_SUPPLY_STATUS_CHARGING;
+
+ if (bdi->chgstate_type == CHG_START) {
+ printk(KERN_INFO"chg chging err!\n");
+ } else {
+ bdi->chgstate_type = CHG_START;
+
+ //irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_HIGH);
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+ printk(KERN_INFO"chg charging\n");
+ }
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_HIGH);
+ } else {/*high stop charging*/
+ if (bdi->chgstate_type == CHG_STOP) {
+ printk(KERN_INFO"chg full err!\n");
+ } else {
+ if ((bdi->chgin_type == USB_IN)&&(bdi->stopchg_flag == CHG_STOP_REASON_TEMP)){
+ bdi->chg_state = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+ }
+ else if(bdi->chgin_type == USB_IN){
+ bdi->chg_state = POWER_SUPPLY_STATUS_FULL;
+ wake_lock(&(bdi->wlock_chgfull));
+ mod_timer(&bdi->changed_timer, jiffies + msecs_to_jiffies(200));
+ }
+ else{
+ bdi->chg_state = POWER_SUPPLY_STATUS_DISCHARGING;
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+ }
+
+ bdi->chgstate_type = CHG_STOP;
+
+ printk(KERN_INFO "chg %s %s stop\n",
+ (bdi->chg_state == POWER_SUPPLY_STATUS_FULL) ? "full" : " ",
+ (bdi->chg_state == POWER_SUPPLY_STATUS_NOT_CHARGING) ? "temp error":"discharging");
+
+ }
+ irq_set_irq_type(bdi->chgstate_irq, IRQ_TYPE_LEVEL_LOW);
+
+ }
+ enable_irq(bdi->chgstate_irq);
+
+ }
+ return 0;
+}
+
+
+static int aw3215_setup_pdata(struct aw3215_dev_info *bdi,
+ struct aw3215_platform_data *pdata)
+{
+ int ret;
+
+ //chg en
+ if (!gpio_is_valid(pdata->gpio_chgen))
+ return -1;
+
+ ret = gpio_request(pdata->gpio_chgen, "chg_en");
+ if (ret < 0)
+ goto out;
+ ret = zx29_gpio_config(pdata->gpio_chgen, pdata->gpio_chgen_gpio_sel);
+ ret = gpio_direction_output(pdata->gpio_chgen, CHG_EN_TYPE);
+ bdi->chg_en =true;
+ bdi->stopchg_flag=CHG_STOP_DEFALT;
+
+ //chg termination current ctrl
+ if (!gpio_is_valid(pdata->gpio_chgctrl)){
+ printk("chg chgctrl gpio undifined\n");
+ return 0;
+ }
+
+ ret = gpio_request(pdata->gpio_chgctrl, "chg_ctrl");
+ if (ret < 0)
+ goto out;
+ ret = zx29_gpio_config(pdata->gpio_chgctrl, pdata->gpio_chgctrl_gpio_sel);
+ if (ret < 0)
+ goto out;
+ ret = gpio_direction_output(pdata->gpio_chgctrl, 0);
+ if (ret < 0)
+ goto out;
+
+ return 0;
+out:
+ //gpio_free(pdata->gpio_int);
+ return -1;
+}
+
+
+static int aw3215_init_state(struct aw3215_dev_info *bdi)
+{
+ struct aw3215_platform_data *pdata;
+ int ret = 0;
+ unsigned int g_gpio_in,g_gpio_state;
+ unsigned int chgin_irq_type=IRQ_TYPE_NONE;
+ unsigned int chgstate_irq_type=IRQ_TYPE_NONE;
+
+ pdata = bdi->pdata;
+ /*chgin*/
+ if (!gpio_is_valid(pdata->gpio_chgin))
+ goto error;
+
+ ret = gpio_request(pdata->gpio_chgin, "chg_usbin");
+ if (ret < 0)
+ goto error;
+
+ zx29_gpio_pd_pu_set(pdata->gpio_chgin, IO_CFG_PULL_DISABLE);
+
+ ret = gpio_direction_input(pdata->gpio_chgin);
+ if (ret < 0)
+ goto error;
+ ret = zx29_gpio_config(pdata->gpio_chgin,pdata->gpio_chgin_fun_sel);
+ if (ret < 0)
+ goto error;
+
+ bdi->chgin_irq= gpio_to_irq(pdata->gpio_chgin);
+
+ /*chg state*/
+ if (!gpio_is_valid(pdata->gpio_chgstate))
+ goto error;
+
+ ret = gpio_request(pdata->gpio_chgstate, "chg_state");
+ if (ret < 0)
+ goto error;
+
+ zx29_gpio_pd_pu_set(pdata->gpio_chgstate, IO_CFG_PULL_DISABLE);
+ ret = gpio_direction_input(pdata->gpio_chgstate);
+ if (ret < 0)
+ goto error;
+ ret = zx29_gpio_config(pdata->gpio_chgstate,pdata->gpio_chgstate_fun_sel);
+ if (ret < 0)
+ goto error;
+
+ bdi->chgstate_irq= gpio_to_irq(pdata->gpio_chgstate);
+
+ mdelay(20);/*?*/
+ g_gpio_in = gpio_get_value(pdata->gpio_chgin);
+ g_gpio_state = gpio_get_value(pdata->gpio_chgstate);
+
+ if ( USB_IN == g_gpio_in){
+ bdi->chgin_type = USB_IN;
+ chgin_irq_type=IRQ_TYPE_USB_OUT;/*IRQ_TYPE_LEVEL_HIGH*/
+ if(CHG_START == g_gpio_state){
+ bdi->chgstate_type=CHG_START ;
+ bdi->chg_state=POWER_SUPPLY_STATUS_CHARGING;
+ chgstate_irq_type=IRQ_TYPE_LEVEL_HIGH;
+ }
+ else{
+ bdi->chgstate_type =CHG_STOP ;
+ chgstate_irq_type = IRQ_TYPE_LEVEL_LOW;
+ bdi->chg_state=POWER_SUPPLY_STATUS_FULL;
+ }
+ printk(KERN_INFO"init usb in\n");
+ dwc_otg_chg_inform(0);/*usb in*/
+ }
+ else{
+ bdi->chgin_type = USB_OUT;
+ bdi->chg_state=POWER_SUPPLY_STATUS_DISCHARGING;
+ chgin_irq_type = IRQ_TYPE_USB_IN/*IRQ_TYPE_LEVEL_LOW*/;
+ if(CHG_START == g_gpio_state){
+ bdi->chgstate_type=CHG_START ;
+ chgstate_irq_type=IRQ_TYPE_LEVEL_HIGH;
+ printk(KERN_INFO"init chg_state err\n");
+ }
+ else{
+ bdi->chgstate_type =CHG_STOP ;
+ chgstate_irq_type = IRQ_TYPE_LEVEL_LOW;
+ }
+ printk(KERN_INFO"init usb out\n");
+ dwc_otg_chg_inform(1);/*usb out*/
+ }
+ irq_set_irq_type(bdi->chgin_irq, chgin_irq_type);
+ irq_set_irq_type(bdi->chgstate_irq, chgstate_irq_type);
+
+ return 0;
+error:
+ printk(KERN_INFO"chg gpio error ret = %d\n",ret);
+ return -1;
+}
+
+
+
+static void aw3215_charge_typedet(T_TYPE_USB_DETECT chg_type)
+{
+ //u8 ret;
+ #ifdef DBG_CHARGE
+ //printk(KERN_INFO"charge type is %d in\n",chg_type);
+ #endif
+
+ if(TYPE_ADAPTER == chg_type){
+ printk(KERN_INFO"chg type DC\n");
+ g_bdi->charger.type = POWER_SUPPLY_PCAC__AC;
+ }
+ else{
+ printk(KERN_INFO"chg type PC\n");
+ g_bdi->charger.type = POWER_SUPPLY_PCAC__PC;
+ }
+
+}
+
+
+#if defined(CONFIG_DEBUG_FS)
+static ssize_t debugfs_regs_write(struct file *file, const char __user *buf,size_t nbytes, loff_t *ppos)
+{
+ unsigned int val1, val2;
+ //u8 reg, value;
+ int ret = 0;
+ char *kern_buf;
+ //struct seq_file *s = file->private_data;
+ //struct aw3215_dev_info *aw3215 = s->private;
+
+ kern_buf = kzalloc(nbytes, GFP_KERNEL);
+
+ if (!kern_buf) {
+ printk(KERN_INFO "aw3215_charger: Failed to allocate buffer\n");
+ return -ENOMEM;
+ }
+
+ if (copy_from_user(kern_buf, (void __user *)buf, nbytes)) {
+ kfree(kern_buf);
+ return -ENOMEM;
+ }
+ printk(KERN_INFO "%s input str=%s,nbytes=%d \n", __func__, kern_buf,nbytes);
+
+ ret = sscanf(kern_buf, "%x:%x", &val1, &val2);
+ if (ret < 2) {
+ printk(KERN_INFO "sgm40561_charger: failed to read user buf, ret=%d, input 0x%x:0x%x\n",
+ ret, val1, val2);
+ kfree(kern_buf);
+ return -EINVAL;
+ }
+ kfree(kern_buf);
+
+ return ret ? ret : nbytes;
+}
+
+static int debugfs_regs_show(struct seq_file *s, void *v)
+{
+ //int i;
+ int ret=0;
+ //int curr = 0;
+ struct aw3215_dev_info *aw3215 = s->private;
+
+ /*charger type*/
+ if((int)aw3215->charger.type == POWER_SUPPLY_PCAC__PC){
+ seq_printf(s, "charger type is PC\n");
+ }
+ else if((int)aw3215->charger.type == POWER_SUPPLY_PCAC__AC){
+ seq_printf(s, "charger type is AC\n");
+ }
+ else
+ seq_printf(s, "charger type is unknow = %d\n",aw3215->charger.type);
+
+ seq_printf(s, "mmi charger config state = %d\n",aw3215->chg_en);
+ seq_printf(s, "chg in state = %s\n",(aw3215->chgin_type==USB_IN)? "USB_IN":"USB_OUT");
+ seq_printf(s, "chg_state state = %s\n",aw3215->chgstate_type ? "CHG_STOP": "CHG_START");
+
+ return ret;
+}
+
+#define DEBUGFS_FILE_ENTRY(name) \
+static int debugfs_##name##_open(struct inode *inode, struct file *file) \
+{\
+return single_open(file, debugfs_##name##_show, inode->i_private); \
+}\
+\
+static const struct file_operations debugfs_##name##_fops = { \
+.owner= THIS_MODULE, \
+.open= debugfs_##name##_open, \
+.write=debugfs_##name##_write, \
+.read= seq_read, \
+.llseek= seq_lseek, \
+.release= single_release, \
+}
+
+DEBUGFS_FILE_ENTRY(regs);
+
+static struct dentry *g_charger_root;
+
+static void debugfs_charger_init(struct aw3215_dev_info *aw3215)
+{
+ struct dentry *root;
+ struct dentry *node;
+ //int i;
+
+ if(!aw3215)
+ return;
+
+ //create root
+ root = debugfs_create_dir("charger_zx29", NULL);
+ if (!root) {
+ dev_err(aw3215->dev, "debugfs_create_dir err=%ld\n", IS_ERR(root));
+ goto err;
+ }
+
+ //print regs;
+ node = debugfs_create_file("regs", S_IRUGO | S_IWUGO, root, aw3215, &debugfs_regs_fops);
+ if (!node){
+ dev_err(aw3215->dev, "debugfs_create_dir err=%ld\n", IS_ERR(node));
+ goto err;
+ }
+
+ g_charger_root = (void *)root;
+ return;
+err:
+ dev_err(aw3215->dev, "debugfs_charger_init err\n");
+}
+
+#endif
+
+static void aw3215_changed_timer_function(unsigned long data)
+{
+ struct aw3215_dev_info *bdi = (void *)data;
+ power_supply_changed(&bdi->charger);
+ power_supply_changed(&bdi->battery);
+ //printk("chg timer callback\n");
+ del_timer(&bdi->changed_timer);
+ wake_unlock(&(bdi->wlock_chgfull));
+ printk("chg timer callback end\n");
+
+}
+
+static int __devinit aw3215_charger_probe(struct platform_device *pdev)
+{
+ struct aw3215_platform_data *pdata = pdev->dev.platform_data;
+ struct device *dev = &pdev->dev;
+ struct aw3215_dev_info *bdi;
+ unsigned long flag;
+ int ret;
+ //int i; /*when err try 3 times*/
+
+ bdi = devm_kzalloc(dev, sizeof(*bdi), GFP_KERNEL);
+ if (!bdi) {
+ dev_err(dev, "Can't alloc bdi struct\n");
+ return -ENOMEM;
+ }
+ bdi->dev = dev;
+ bdi->pdata = pdata;
+
+ //printk(KERN_INFO "charger probe.\n");
+
+ bdi->chg_state = POWER_SUPPLY_STATUS_UNKNOWN;
+ bdi->charger.type = POWER_SUPPLY_TYPE_UNKNOWN;
+
+ g_bdi = bdi;
+
+ ret = aw3215_setup_pdata(bdi, pdata);
+ if (ret) {
+ dev_err(dev, "Can't get irq info\n");
+ return -EINVAL;
+ }
+
+ aw3215_charger_init(&bdi->charger);
+
+ ret = power_supply_register(dev, &bdi->charger);
+ if (ret) {
+ dev_err(dev, "Can't register charger\n");
+ goto out2;
+ }
+ //printk(KERN_INFO "aw3215_probe power_supply_register charger ok.\n");
+
+ aw3215_battery_init(&bdi->battery);
+
+ ret = power_supply_register(dev, &bdi->battery);
+ if (ret) {
+ dev_err(dev, "Can't register battery\n");
+ goto out1;
+ }
+ //printk(KERN_INFO "aw3215_probe power_supply_register battery ok.\n");
+ sema_init(&bdi->chgin_sem, 0);
+ sema_init(&bdi->chgstate_sem, 0);
+
+ dwc_chg_Regcallback(aw3215_charge_typedet);/*register for usb*/
+ aw3215_init_state(bdi);
+ init_timer(&bdi->changed_timer);
+ bdi->changed_timer.function = aw3215_changed_timer_function;
+ bdi->changed_timer.data = (unsigned long)bdi;
+ wake_lock_init(&(bdi->wlock_chgfull), WAKE_LOCK_SUSPEND, "aw3215_wake_lock_chgfull");
+
+/*chg in*/
+ ret = request_irq(bdi->chgin_irq, aw3215_charger_in_irq_primary_handler,IRQF_NO_THREAD, "aw3215-chgin", bdi);
+ if (ret < 0) {
+ dev_err(dev, "Can't set up irq handler\n");
+ if (bdi->pdata->gpio_chgin)
+ gpio_free(bdi->pdata->gpio_chgin);
+
+ goto out3;
+ }
+ irq_set_irq_wake(bdi->chgin_irq, 1);
+ bdi->chgin_irq_thread = kthread_run(aw3215_chgin_irq_handler_thread, bdi, "aw3215-chgin");
+ BUG_ON(IS_ERR(bdi->chgin_irq_thread));
+
+/*chg state*/
+ ret = request_irq(bdi->chgstate_irq, aw3215_charger_state_irq_primary_handler,IRQF_NO_THREAD, "aw3215-chgstate", bdi);
+ if (ret < 0) {
+ dev_err(dev, "Can't set up irq handler\n");
+ if (bdi->pdata->gpio_chgstate)
+ gpio_free(bdi->pdata->gpio_chgstate);
+
+ goto out3;
+ }
+ irq_set_irq_wake(bdi->chgstate_irq, 1);
+ bdi->chgstate_irq_thread = kthread_run(aw3215_chgstate_irq_handler_thread, bdi, "aw3215-chgstate");
+ BUG_ON(IS_ERR(bdi->chgstate_irq_thread));
+
+#if defined(CONFIG_DEBUG_FS)
+ debugfs_charger_init(bdi);
+#endif
+
+#ifdef DBG_CHARGE
+ //printk(KERN_INFO "aw3215_probe end.\n");
+#endif
+
+ return 0;
+
+out1:
+ power_supply_unregister(&bdi->battery);
+out2:
+ //pm_runtime_disable(dev);
+ power_supply_unregister(&bdi->charger);
+out3:
+
+ return ret;
+
+}
+
+static int aw3215_charger_remove(struct platform_device *pdev)
+{
+ struct aw3215_platform_data *pdata = pdev->dev.platform_data;
+
+ power_supply_unregister(&(g_bdi->battery));
+ power_supply_unregister(&(g_bdi->charger));
+
+ pm_runtime_disable(g_bdi->dev);
+
+ if (pdata->gpio_chgctrl)
+ gpio_free(pdata->gpio_chgctrl);
+ if (pdata->gpio_chgen)
+ gpio_free(pdata->gpio_chgen);
+ if (pdata->gpio_chgin)
+ gpio_free(pdata->gpio_chgin);
+ if (pdata->gpio_chgstate)
+ gpio_free(pdata->gpio_chgstate);
+
+
+#if defined(CONFIG_DEBUG_FS)
+ if(g_charger_root){
+ //printk(KERN_INFO "aw3215_device_exit:debugfs_remove_recursive \n");
+ debugfs_remove_recursive(g_charger_root);
+ }
+#endif
+
+ return 0;
+}
+
+
+static struct platform_driver zx29_charger_driver = {
+ .probe = aw3215_charger_probe,
+ .remove = __devexit_p(aw3215_charger_remove),
+ .driver = {
+ .name = "aw3215-charger",
+ .owner = THIS_MODULE,
+ },
+};
+
+//module_platform_driver(zx29_charger_driver);
+
+
+static int __init zx29_charger_init(void)
+{
+ return platform_driver_register(&zx29_charger_driver);
+}
+
+static void __exit zx29_charger_exit(void)
+{
+ platform_driver_unregister(&zx29_charger_driver);
+}
+
+module_init(zx29_charger_init);
+module_exit(zx29_charger_exit);
+
+
+MODULE_AUTHOR("Mark A. Greer <mgreer@animalcreek.com>");
+MODULE_DESCRIPTION("AW3215 Charger Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:zx29_charger");
+
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/z2_battery.c b/ap/os/linux/linux-3.4.x/drivers/power/z2_battery.c
new file mode 100644
index 0000000..8c9a607
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/z2_battery.c
@@ -0,0 +1,323 @@
+/*
+ * Battery measurement code for Zipit Z2
+ *
+ * Copyright (C) 2009 Peter Edwards <sweetlilmre@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+#include <linux/z2_battery.h>
+
+#define Z2_DEFAULT_NAME "Z2"
+
+struct z2_charger {
+ struct z2_battery_info *info;
+ int bat_status;
+ struct i2c_client *client;
+ struct power_supply batt_ps;
+ struct mutex work_lock;
+ struct work_struct bat_work;
+};
+
+static unsigned long z2_read_bat(struct z2_charger *charger)
+{
+ int data;
+ data = i2c_smbus_read_byte_data(charger->client,
+ charger->info->batt_I2C_reg);
+ if (data < 0)
+ return 0;
+
+ return data * charger->info->batt_mult / charger->info->batt_div;
+}
+
+static int z2_batt_get_property(struct power_supply *batt_ps,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct z2_charger *charger = container_of(batt_ps, struct z2_charger,
+ batt_ps);
+ struct z2_battery_info *info = charger->info;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = charger->bat_status;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = info->batt_tech;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ if (info->batt_I2C_reg >= 0)
+ val->intval = z2_read_bat(charger);
+ else
+ return -EINVAL;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ if (info->max_voltage >= 0)
+ val->intval = info->max_voltage;
+ else
+ return -EINVAL;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+ if (info->min_voltage >= 0)
+ val->intval = info->min_voltage;
+ else
+ return -EINVAL;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void z2_batt_ext_power_changed(struct power_supply *batt_ps)
+{
+ struct z2_charger *charger = container_of(batt_ps, struct z2_charger,
+ batt_ps);
+ schedule_work(&charger->bat_work);
+}
+
+static void z2_batt_update(struct z2_charger *charger)
+{
+ int old_status = charger->bat_status;
+ struct z2_battery_info *info;
+
+ info = charger->info;
+
+ mutex_lock(&charger->work_lock);
+
+ charger->bat_status = (info->charge_gpio >= 0) ?
+ (gpio_get_value(info->charge_gpio) ?
+ POWER_SUPPLY_STATUS_CHARGING :
+ POWER_SUPPLY_STATUS_DISCHARGING) :
+ POWER_SUPPLY_STATUS_UNKNOWN;
+
+ if (old_status != charger->bat_status) {
+ pr_debug("%s: %i -> %i\n", charger->batt_ps.name, old_status,
+ charger->bat_status);
+ power_supply_changed(&charger->batt_ps);
+ }
+
+ mutex_unlock(&charger->work_lock);
+}
+
+static void z2_batt_work(struct work_struct *work)
+{
+ struct z2_charger *charger;
+ charger = container_of(work, struct z2_charger, bat_work);
+ z2_batt_update(charger);
+}
+
+static irqreturn_t z2_charge_switch_irq(int irq, void *devid)
+{
+ struct z2_charger *charger = devid;
+ schedule_work(&charger->bat_work);
+ return IRQ_HANDLED;
+}
+
+static int z2_batt_ps_init(struct z2_charger *charger, int props)
+{
+ int i = 0;
+ enum power_supply_property *prop;
+ struct z2_battery_info *info = charger->info;
+
+ if (info->charge_gpio >= 0)
+ props++; /* POWER_SUPPLY_PROP_STATUS */
+ if (info->batt_tech >= 0)
+ props++; /* POWER_SUPPLY_PROP_TECHNOLOGY */
+ if (info->batt_I2C_reg >= 0)
+ props++; /* POWER_SUPPLY_PROP_VOLTAGE_NOW */
+ if (info->max_voltage >= 0)
+ props++; /* POWER_SUPPLY_PROP_VOLTAGE_MAX */
+ if (info->min_voltage >= 0)
+ props++; /* POWER_SUPPLY_PROP_VOLTAGE_MIN */
+
+ prop = kzalloc(props * sizeof(*prop), GFP_KERNEL);
+ if (!prop)
+ return -ENOMEM;
+
+ prop[i++] = POWER_SUPPLY_PROP_PRESENT;
+ if (info->charge_gpio >= 0)
+ prop[i++] = POWER_SUPPLY_PROP_STATUS;
+ if (info->batt_tech >= 0)
+ prop[i++] = POWER_SUPPLY_PROP_TECHNOLOGY;
+ if (info->batt_I2C_reg >= 0)
+ prop[i++] = POWER_SUPPLY_PROP_VOLTAGE_NOW;
+ if (info->max_voltage >= 0)
+ prop[i++] = POWER_SUPPLY_PROP_VOLTAGE_MAX;
+ if (info->min_voltage >= 0)
+ prop[i++] = POWER_SUPPLY_PROP_VOLTAGE_MIN;
+
+ if (!info->batt_name) {
+ dev_info(&charger->client->dev,
+ "Please consider setting proper battery "
+ "name in platform definition file, falling "
+ "back to name \" Z2_DEFAULT_NAME \"\n");
+ charger->batt_ps.name = Z2_DEFAULT_NAME;
+ } else
+ charger->batt_ps.name = info->batt_name;
+
+ charger->batt_ps.properties = prop;
+ charger->batt_ps.num_properties = props;
+ charger->batt_ps.type = POWER_SUPPLY_TYPE_BATTERY;
+ charger->batt_ps.get_property = z2_batt_get_property;
+ charger->batt_ps.external_power_changed = z2_batt_ext_power_changed;
+ charger->batt_ps.use_for_apm = 1;
+
+ return 0;
+}
+
+static int __devinit z2_batt_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ int ret = 0;
+ int props = 1; /* POWER_SUPPLY_PROP_PRESENT */
+ struct z2_charger *charger;
+ struct z2_battery_info *info = client->dev.platform_data;
+
+ if (info == NULL) {
+ dev_err(&client->dev,
+ "Please set platform device platform_data"
+ " to a valid z2_battery_info pointer!\n");
+ return -EINVAL;
+ }
+
+ charger = kzalloc(sizeof(*charger), GFP_KERNEL);
+ if (charger == NULL)
+ return -ENOMEM;
+
+ charger->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
+ charger->info = info;
+ charger->client = client;
+ i2c_set_clientdata(client, charger);
+
+ mutex_init(&charger->work_lock);
+
+ if (info->charge_gpio >= 0 && gpio_is_valid(info->charge_gpio)) {
+ ret = gpio_request(info->charge_gpio, "BATT CHRG");
+ if (ret)
+ goto err;
+
+ ret = gpio_direction_input(info->charge_gpio);
+ if (ret)
+ goto err2;
+
+ irq_set_irq_type(gpio_to_irq(info->charge_gpio),
+ IRQ_TYPE_EDGE_BOTH);
+ ret = request_irq(gpio_to_irq(info->charge_gpio),
+ z2_charge_switch_irq, 0,
+ "AC Detect", charger);
+ if (ret)
+ goto err3;
+ }
+
+ ret = z2_batt_ps_init(charger, props);
+ if (ret)
+ goto err3;
+
+ INIT_WORK(&charger->bat_work, z2_batt_work);
+
+ ret = power_supply_register(&client->dev, &charger->batt_ps);
+ if (ret)
+ goto err4;
+
+ schedule_work(&charger->bat_work);
+
+ return 0;
+
+err4:
+ kfree(charger->batt_ps.properties);
+err3:
+ if (info->charge_gpio >= 0 && gpio_is_valid(info->charge_gpio))
+ free_irq(gpio_to_irq(info->charge_gpio), charger);
+err2:
+ if (info->charge_gpio >= 0 && gpio_is_valid(info->charge_gpio))
+ gpio_free(info->charge_gpio);
+err:
+ kfree(charger);
+ return ret;
+}
+
+static int __devexit z2_batt_remove(struct i2c_client *client)
+{
+ struct z2_charger *charger = i2c_get_clientdata(client);
+ struct z2_battery_info *info = charger->info;
+
+ cancel_work_sync(&charger->bat_work);
+ power_supply_unregister(&charger->batt_ps);
+
+ kfree(charger->batt_ps.properties);
+ if (info->charge_gpio >= 0 && gpio_is_valid(info->charge_gpio)) {
+ free_irq(gpio_to_irq(info->charge_gpio), charger);
+ gpio_free(info->charge_gpio);
+ }
+
+ kfree(charger);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int z2_batt_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct z2_charger *charger = i2c_get_clientdata(client);
+
+ flush_work_sync(&charger->bat_work);
+ return 0;
+}
+
+static int z2_batt_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct z2_charger *charger = i2c_get_clientdata(client);
+
+ schedule_work(&charger->bat_work);
+ return 0;
+}
+
+static const struct dev_pm_ops z2_battery_pm_ops = {
+ .suspend = z2_batt_suspend,
+ .resume = z2_batt_resume,
+};
+
+#define Z2_BATTERY_PM_OPS (&z2_battery_pm_ops)
+
+#else
+#define Z2_BATTERY_PM_OPS (NULL)
+#endif
+
+static const struct i2c_device_id z2_batt_id[] = {
+ { "aer915", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, z2_batt_id);
+
+static struct i2c_driver z2_batt_driver = {
+ .driver = {
+ .name = "z2-battery",
+ .owner = THIS_MODULE,
+ .pm = Z2_BATTERY_PM_OPS
+ },
+ .probe = z2_batt_probe,
+ .remove = __devexit_p(z2_batt_remove),
+ .id_table = z2_batt_id,
+};
+module_i2c_driver(z2_batt_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Peter Edwards <sweetlilmre@gmail.com>");
+MODULE_DESCRIPTION("Zipit Z2 battery driver");
diff --git a/ap/os/linux/linux-3.4.x/drivers/power/zx234502_charger.c b/ap/os/linux/linux-3.4.x/drivers/power/zx234502_charger.c
new file mode 100644
index 0000000..9e72408
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/power/zx234502_charger.c
@@ -0,0 +1,2391 @@
+/*
+ * Driver for the TI zx234502 battery charger.
+ *
+ * Author: Mark A. Greer <mgreer@animalcreek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/of_irq.h>
+#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/power_supply.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/kthread.h>
+//#include <linux/mutex.h>
+#include <linux/semaphore.h>
+
+#include <linux/power/zx234502_charger.h>
+#include <linux/mfd/zx234290.h>
+
+#include <mach/gpio.h>
+#include <mach/pcu.h>
+#include <mach/zx29_usb.h>
+#include <linux/workqueue.h>
+
+#include <linux/slab.h>
+#include <linux/debugfs.h>
+#include <asm/uaccess.h>
+
+/*
+ * The FAULT register is latched by the zx234502 (except for NTC_FAULT)
+ * so the first read after a fault returns the latched value and subsequent
+ * reads return the current value. In order to return the fault status
+ * to the user, have the interrupt handler save the reg's value and retrieve
+ * it in the appropriate health/status routine. Each routine has its own
+ * flag indicating whether it should use the value stored by the last run
+ * of the interrupt handler or do an actual reg read. That way each routine
+ * can report back whatever fault may have occured.
+ */
+struct zx234502_dev_info {
+ struct i2c_client *client;
+ struct device *dev;
+ struct power_supply charger;
+ struct power_supply battery;
+ struct power_supply boost;
+ char model_name[I2C_NAME_SIZE];
+ kernel_ulong_t model;
+ unsigned int gpio_int;
+ unsigned int irq;
+ struct mutex bs_reg_lock;
+ bool first_time; /*let the first reset do not ask mmi*/
+ bool charger_health_valid;
+ bool battery_health_valid;
+ bool battery_status_valid;
+ u8 ciis_curr_reg;
+ u8 cbis_curr_reg;
+ u8 pis_curr_reg;
+ u8 cfis_curr_reg;
+
+ u8 ciis_pre_reg;
+ u8 cbis_pre_reg;
+ u8 pis_pre_reg;
+ u8 cfis_pre_reg;
+ u8 watchdog;
+ u8 boost_online_flag;
+ struct delayed_work boostWorkStruct ;
+ struct workqueue_struct *boostQueue;
+ struct semaphore chgirq_sem;
+ struct task_struct *chg_irq_thread;
+ u16 boostcount;
+
+ struct zx234502_platform_data *pdata;
+ //unsigned int chg_type;
+};
+
+//struct zx234502_platform_data *g_platform_data = NULL;
+struct zx234502_dev_info *g_bdi = NULL;
+
+/* REG01[2:0] (ISET_DCIN) in mAh */
+static const int zx234502_in_ilimit_values[] = {
+ 150, 450, 850, 1000, 1500, 2000, 2500, 3000
+};
+/* REG01[6:3] (VINDPM) in mVh */
+static const int zx234502_vindpm_values[] = {
+ 3880, 3960, 4040, 4120,
+ 4200,4280, 4360, 4440,
+ 4520,4600, 4680, 4760,
+ 4840,4920, 5000, 5080,
+};
+
+/*
+ * The tables below provide a 2-way mapping for the value that goes in
+ * the register field and the real-world value that it represents.
+ * The index of the array is the value that goes in the register; the
+ * number at that index in the array is the real-world value that it
+ * represents.
+ */
+/* REG02[7:2] (ISETA) in mAh */
+static const int zx234502_isc_ichg_values[] = {
+ 512, 576, 640, 704, 768, 832, 896, 960,
+ 1024, 1088, 1152, 1216, 1280, 1344, 1408, 1472,
+ 1536, 1600, 1664, 1728, 1792, 1856, 1920, 1984,
+ 2048, 2112, 2176, 2240, 2304, 2368, 2432, 2496,
+ 2560, 2624, 2688, 2752, 2816, 2880, 2944, 3008,
+ 3072, 3136, 3200, 3264, 3328, 3392, 3456, 3520,
+ 3584, 3648, 3712, 3776, 3840, 3904, 3968, 4032,
+ 4096, 4160, 4224, 4288, 4352, 4416, 4480, 4544
+};
+
+/* REG04[3:1] (VSETA) in mV */
+static const int zx234502_cvc_vseta_values[] = {
+ 4100, 4150, 4200, 4250, 4300, 4350, 4400, 4450,
+};
+
+/* REG02[7:5] (VSYS_MIN) in mV */
+static const int zx234502_vsc_sysmin_values[] = {
+ 3100, 3200, 3300, 3400, 3500, 3600, 3700,3800
+};
+static int stopchg_flag = 0;
+/*
+ * Return the index in 'tbl' of greatest value that is less than or equal to
+ * 'val'. The index range returned is 0 to 'tbl_size' - 1. Assumes that
+ * the values in 'tbl' are sorted from smallest to largest and 'tbl_size'
+ * is less than 2^8.
+ */
+static u8 zx234502_find_idx(const int tbl[], int tbl_size, int v)
+{
+ int i;
+
+ for (i = 1; i < tbl_size; i++)
+ if (v < tbl[i])
+ break;
+
+ return i - 1;
+}
+
+/* Basic driver I/O routines */
+
+static int zx234502_read(struct zx234502_dev_info *bdi, u8 reg, u8 *data)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(bdi->client, reg);
+ if (ret < 0)
+ return ret;
+
+ *data = ret;
+ return 0;
+}
+
+static int zx234502_write(struct zx234502_dev_info *bdi, u8 reg, u8 data)
+{
+ return i2c_smbus_write_byte_data(bdi->client, reg, data);
+}
+
+static int zx234502_read_mask(struct zx234502_dev_info *bdi, u8 reg,
+ u8 mask, u8 shift, u8 *data)
+{
+ u8 v;
+ int ret;
+
+ ret = zx234502_read(bdi, reg, &v);
+ if (ret < 0)
+ return ret;
+
+ v &= mask;
+ v >>= shift;
+ *data = v;
+
+ return 0;
+}
+
+static int zx234502_write_mask(struct zx234502_dev_info *bdi, u8 reg,
+ u8 mask, u8 shift, u8 data)
+{
+ u8 v;
+ int ret;
+
+ ret = zx234502_read(bdi, reg, &v);
+ if (ret < 0)
+ return ret;
+
+ v &= ~mask;
+ v |= ((data << shift) & mask);
+
+ return zx234502_write(bdi, reg, v);
+}
+
+static int zx234502_get_field_val(struct zx234502_dev_info *bdi,
+ u8 reg, u8 mask, u8 shift,
+ const int tbl[], int tbl_size,
+ int *val)
+{
+ u8 v;
+ int ret;
+
+ ret = zx234502_read_mask(bdi, reg, mask, shift, &v);
+ if (ret < 0)
+ return ret;
+
+ v = (v >= tbl_size) ? (tbl_size - 1) : v;
+ *val = tbl[v];
+
+ return 0;
+}
+
+static int zx234502_set_field_val(struct zx234502_dev_info *bdi,
+ u8 reg, u8 mask, u8 shift,
+ const int tbl[], int tbl_size,
+ int val)
+{
+ u8 idx;
+
+ idx = zx234502_find_idx(tbl, tbl_size, val);
+
+ return zx234502_write_mask(bdi, reg, mask, shift, idx);
+}
+
+//#ifdef CONFIG_SYSFS
+#if 0
+/*
+ * There are a numerous options that are configurable on the zx234502
+ * that go well beyond what the power_supply properties provide access to.
+ * Provide sysfs access to them so they can be examined and possibly modified
+ * on the fly. They will be provided for the charger power_supply object only
+ * and will be prefixed by 'f_' to make them easier to recognize.
+ */
+
+struct zx234502_sysfs_field_info {
+ struct device_attribute attr;
+ u8 reg;
+ u8 mask;
+ u8 shift;
+};
+
+
+#define ZX234502_SYSFS_FIELD(_name, r, f, m, store) \
+{ \
+ .attr = __ATTR(f_##_name, m, zx234502_sysfs_show, store), \
+ .reg = ZX234502_REG_##r, \
+ .mask = ZX234502_REG_##r##_##f##_MASK, \
+ .shift = ZX234502_REG_##r##_##f##_SHIFT, \
+}
+
+#define ZX234502_SYSFS_FIELD_RW(_name, r, f) \
+ ZX234502_SYSFS_FIELD(_name, r, f, S_IWUSR | S_IRUGO, \
+ zx234502_sysfs_store)
+
+#define ZX234502_SYSFS_FIELD_RO(_name, r, f) \
+ ZX234502_SYSFS_FIELD(_name, r, f, S_IRUGO, NULL)
+
+static ssize_t zx234502_sysfs_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+static ssize_t zx234502_sysfs_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count);
+
+
+/* On i386 ptrace-abi.h defines SS that breaks the macro calls below. */
+//#undef SS
+
+static struct zx234502_sysfs_field_info zx234502_sysfs_field_tbl[] = {
+ /* sysfs name reg field in reg */
+ ZX234502_SYSFS_FIELD_RW(chg_reset, MS, CHGRST),
+ ZX234502_SYSFS_FIELD_RW(pmuon, MS, PMUON),
+ ZX234502_SYSFS_FIELD_RW(en_ship, MS, ENSHIP),
+ ZX234502_SYSFS_FIELD_RW(en_otg, MS, ENOTG),
+ ZX234502_SYSFS_FIELD_RW(chg_config, MS, ENCHG),
+ ZX234502_SYSFS_FIELD_RW(en_powerbank, MS, PWRBNK),
+ ZX234502_SYSFS_FIELD_RW(insus, MS, INSUS),
+ ZX234502_SYSFS_FIELD_RW(in_limit, ISC, ISET_DCIN),
+ ZX234502_SYSFS_FIELD_RW(vsys_min, VSC, VSYS_MIN),
+ ZX234502_SYSFS_FIELD_RW(ichg, CCC, ISETA),
+ ZX234502_SYSFS_FIELD_RW(force_ichg_50pct, CCC, ICHG_50PCT),
+ ZX234502_SYSFS_FIELD_RW(iprechg, CVC, IPRECHG),
+ ZX234502_SYSFS_FIELD_RW(vbat_full, CVC, VBAT),
+ ZX234502_SYSFS_FIELD_RW(vpre_to_fast, CVC, VBATFC),
+ ZX234502_SYSFS_FIELD_RW(en_timer, CTC, EN_TIMER),
+ ZX234502_SYSFS_FIELD_RW(en_2timer, CTC, EN_2XTIMER),
+ ZX234502_SYSFS_FIELD_RW(stopchg_flag, OTGC, OTGV),
+ ZX234502_SYSFS_FIELD_RW(iotg_limit, OTGC, OTGI_LIM),
+ ZX234502_SYSFS_FIELD_RW(ents_otg, OTGC, ENTS_OTG),
+ ZX234502_SYSFS_FIELD_RO(en_therm, THR, EN_THERM),
+ ZX234502_SYSFS_FIELD_RW(therm_threshold, THR, THERM_THLD),
+ ZX234502_SYSFS_FIELD_RW(en_2det, THR, EN_2DET),
+ ZX234502_SYSFS_FIELD_RW(en_1det, THR, EN_1DET),
+ ZX234502_SYSFS_FIELD_RW(en_jeita, THR, EN_JEITA),
+ ZX234502_SYSFS_FIELD_RW(en_ilimitdj, THR, EN_ILIMITDJ),
+ ZX234502_SYSFS_FIELD_RW(tscold, TS, COLD),
+ ZX234502_SYSFS_FIELD_RW(tscool, TS, COOL),
+ ZX234502_SYSFS_FIELD_RW(tswarm, TS, WARM),
+ ZX234502_SYSFS_FIELD_RW(tshot, TS, HOT),
+ ZX234502_SYSFS_FIELD_RW(ntcdet, PTS,NTCDET),
+ ZX234502_SYSFS_FIELD_RW(int_clear, CIIS, INT),
+ ZX234502_SYSFS_FIELD_RO(ciis_reg, CIIS, ALL),
+ ZX234502_SYSFS_FIELD_RW(mask_chgrun, CIIM, MASK_CHGRUN),
+ ZX234502_SYSFS_FIELD_RW(mask_inlimit, CIIM, MASK_INLIMIT),
+ ZX234502_SYSFS_FIELD_RW(mask_thr, CIIM, MASK_THR),
+ ZX234502_SYSFS_FIELD_RW(mask_ts, CIIM, MASK_TS),
+ ZX234502_SYSFS_FIELD_RW(mask_dcdet, CIIM, MASK_DCDET),
+ ZX234502_SYSFS_FIELD_RO(cbis_reg, CBIS, ALL),
+ ZX234502_SYSFS_FIELD_RW(mask_pg, CBIM, MASK_DCIN_PG),
+ ZX234502_SYSFS_FIELD_RW(mask_batlow, CBIM, MASK_BATLOW),
+ ZX234502_SYSFS_FIELD_RW(mask_nobat, CBIM, MASK_NOBAT),
+ ZX234502_SYSFS_FIELD_RW(mask_eoc, CBIM, MASK_EOC),
+ ZX234502_SYSFS_FIELD_RW(mask_timer, CBIM, MASK_SAFE_TIMER),
+ ZX234502_SYSFS_FIELD_RW(mask_otg_fault, CBIM, MASK_OTG_FAULT),
+ ZX234502_SYSFS_FIELD_RO(pis_reg, PIS, ALL),
+ ZX234502_SYSFS_FIELD_RW(mask_pwron_it, PIM, MASK_POWERON_IT),
+ ZX234502_SYSFS_FIELD_RW(mask_pwron_lp, PIM, MASK_POWERON_LP),
+ ZX234502_SYSFS_FIELD_RO(cfis_reg, CFIS, ALL),
+ ZX234502_SYSFS_FIELD_RO(version_info, VER, INFO),
+};
+
+static struct attribute *
+ zx234502_sysfs_attrs[ARRAY_SIZE(zx234502_sysfs_field_tbl) + 1];
+
+static const struct attribute_group zx234502_sysfs_attr_group = {
+ .attrs = zx234502_sysfs_attrs,
+};
+
+static void zx234502_sysfs_init_attrs(void)
+{
+ int i, limit = ARRAY_SIZE(zx234502_sysfs_field_tbl);
+
+ for (i = 0; i < limit; i++)
+ zx234502_sysfs_attrs[i] = &zx234502_sysfs_field_tbl[i].attr.attr;
+
+ zx234502_sysfs_attrs[limit] = NULL; /* Has additional entry for this */
+}
+
+static struct zx234502_sysfs_field_info *zx234502_sysfs_field_lookup(
+ const char *name)
+{
+ int i, limit = ARRAY_SIZE(zx234502_sysfs_field_tbl);
+
+ for (i = 0; i < limit; i++)
+ if (!strcmp(name, zx234502_sysfs_field_tbl[i].attr.attr.name))
+ break;
+
+ if (i >= limit)
+ return NULL;
+
+ return &zx234502_sysfs_field_tbl[i];
+}
+
+static ssize_t zx234502_sysfs_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct power_supply *psy = dev_get_drvdata(dev);
+ struct zx234502_dev_info *bdi =
+ container_of(psy, struct zx234502_dev_info, charger);
+ struct zx234502_sysfs_field_info *info;
+ int ret;
+ u8 v;
+
+ info = zx234502_sysfs_field_lookup(attr->attr.name);
+ if (!info)
+ return -EINVAL;
+
+ ret = zx234502_read_mask(bdi, info->reg, info->mask, info->shift, &v);
+ if (ret)
+ return ret;
+
+ return scnprintf(buf, PAGE_SIZE, "%hhx\n", v);
+}
+
+static ssize_t zx234502_sysfs_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct power_supply *psy = dev_get_drvdata(dev);
+ struct zx234502_dev_info *bdi =
+ container_of(psy, struct zx234502_dev_info, charger);
+ struct zx234502_sysfs_field_info *info;
+ int ret;
+ u8 v;
+
+ info = zx234502_sysfs_field_lookup(attr->attr.name);
+ if (!info)
+ return -EINVAL;
+
+ ret = kstrtou8(buf, 0, &v);
+ if (ret < 0)
+ return ret;
+
+ ret = zx234502_write_mask(bdi, info->reg, info->mask, info->shift, v);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static int zx234502_sysfs_create_group(struct zx234502_dev_info *bdi)
+{
+ zx234502_sysfs_init_attrs();
+
+ return sysfs_create_group(&bdi->charger.dev->kobj,
+ &zx234502_sysfs_attr_group);
+}
+
+static void zx234502_sysfs_remove_group(struct zx234502_dev_info *bdi)
+{
+ sysfs_remove_group(&bdi->charger.dev->kobj, &zx234502_sysfs_attr_group);
+}
+#else
+static int zx234502_sysfs_create_group(struct zx234502_dev_info *bdi)
+{
+ return 0;
+}
+
+static inline void zx234502_sysfs_remove_group(struct zx234502_dev_info *bdi) {}
+#endif
+
+#if 0
+/*set the Vsys min*/
+static int zx234502_set_vsys_min(struct zx234502_dev_info *bdi,const union power_supply_propval *val)
+{
+ return zx234502_set_field_val(bdi, ZX234502_REG_VSC,
+ ZX234502_REG_VSC_VSYS_MIN_MASK, ZX234502_REG_VSC_VSYS_MIN_SHIFT,
+ zx234502_cvc_vseta_values,
+ ARRAY_SIZE(zx234502_cvc_vseta_values), val->intval);
+ //return 0
+}
+#endif
+static int zx234502_register_reset(struct zx234502_dev_info *bdi)
+{
+ int ret, limit = 100;
+ u8 v;
+
+ /* Reset the registers */
+ ret = zx234502_write_mask(bdi, ZX234502_REG_MS,ZX234502_REG_MS_CHGRST_MASK,ZX234502_REG_MS_CHGRST_SHIFT,0x1);
+ if (ret < 0)
+ return ret;
+
+ /* Reset bit will be cleared by hardware so poll until it is */
+ do
+ {
+ ret = zx234502_read_mask(bdi, ZX234502_REG_MS,ZX234502_REG_MS_CHGRST_MASK,ZX234502_REG_MS_CHGRST_SHIFT,&v);
+ if (ret < 0)
+ return ret;
+
+ if (!v)
+ break;
+
+ udelay(10);
+ } while (--limit);
+
+ if (!limit)
+ return -EIO;
+
+ return 0;
+}
+
+
+/* Charger power supply property routines */
+
+static int zx234502_charger_get_charge_type(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ val->intval = bdi->charger.type;
+ return 0;
+}
+
+static int zx234502_charger_get_status(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ u8 cbis_reg=0,ms_reg=0;
+ int status=POWER_SUPPLY_STATUS_UNKNOWN;
+ int ret=0;
+
+ mutex_lock(&bdi->bs_reg_lock);
+
+ if (bdi->battery_status_valid) {
+ cbis_reg = bdi->cbis_curr_reg;
+ bdi->battery_status_valid = false;
+ mutex_unlock(&bdi->bs_reg_lock);
+ } else {
+ mutex_unlock(&bdi->bs_reg_lock);
+
+ ret = zx234502_read(bdi, ZX234502_REG_CBIS, &cbis_reg);
+ if (ret < 0)
+ return ret;
+ }
+
+ ret = zx234502_read(bdi, ZX234502_REG_MS, &ms_reg);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * The battery must be discharging when any of these are true:
+ * - there is no good power source;
+ * - there is a charge fault.
+ * Could also be discharging when in "supplement mode" but
+ * there is no way to tell when its in that mode.
+ */
+ if (!(cbis_reg & ZX234502_REG_CBIS_DCIN_PG_MASK )||(cbis_reg & ZX234502_REG_CBIS_NOBAT_MASK )) {
+ status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+ else if (ms_reg & ZX234502_REG_MS_ENCHG_MASK){
+ status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ }
+ // disable or full
+ else if(ms_reg & ZX234502_REG_MS_INSUS_MASK)
+ {
+ if (((cbis_reg & ZX234502_REG_CBIS_CHGSTAT_MASK) >> ZX234502_REG_CBIS_CHGSTAT_SHIFT)== 3)
+ {
+ status = POWER_SUPPLY_STATUS_FULL;
+ }
+ else
+ status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ }
+ else {
+ cbis_reg &= ZX234502_REG_CBIS_CHGSTAT_MASK;
+ cbis_reg >>= ZX234502_REG_CBIS_CHGSTAT_SHIFT;
+
+ switch (cbis_reg) {
+ case 0x0: /* Charging */
+ case 0x2: /* ReCharging frome THERM */
+ status = POWER_SUPPLY_STATUS_CHARGING;
+ break;
+ case 0x3: /* Charge Termination Done */
+ status = POWER_SUPPLY_STATUS_FULL;
+ break;
+ default:
+ ret = -EIO;
+ }
+ }
+
+ if (!ret)
+ val->intval = status;
+
+ return ret;
+}
+
+static int zx234502_charger_get_health(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ u8 ciis_reg=0, cbis_reg=0, cfis_reg=0;
+ int health=0, ret=0;
+
+ mutex_lock(&bdi->bs_reg_lock);
+
+ if (bdi->charger_health_valid) {
+ bdi->charger_health_valid = false;
+ cbis_reg = bdi->cbis_curr_reg;
+ ciis_reg = bdi->ciis_curr_reg;
+ cfis_reg = bdi->cfis_curr_reg;
+ mutex_unlock(&bdi->bs_reg_lock);
+ } else {
+ mutex_unlock(&bdi->bs_reg_lock);
+
+ ret = zx234502_read(bdi, ZX234502_REG_CIIS, &ciis_reg);
+ if (ret < 0)
+ return ret;
+ ret = zx234502_read(bdi, ZX234502_REG_CBIS, &cbis_reg);
+ if (ret < 0)
+ return ret;
+ ret = zx234502_read(bdi, ZX234502_REG_CFIS, &cfis_reg);
+ if (ret < 0)
+ return ret;
+
+ printk(KERN_INFO "zx234502_charger_get_health REG_0xa=0x%x,REG_0xc=0x%x,REG_0x10=0x%x.\n",ciis_reg,cbis_reg,cfis_reg);
+
+ }
+
+ if (cbis_reg & ZX234502_REG_CBIS_OTG_FAULT_MASK) {
+ /*
+ * This could be over-current or over-voltage but there's
+ * no way to tell which. Return 'OVERVOLTAGE' since there
+ * isn't an 'OVERCURRENT' value defined that we can return
+ * even if it was over-current.
+ */
+ health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ }
+ else if(cbis_reg & ZX234502_REG_CBIS_SAFE_TIMER_MASK) {
+ health = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
+ }
+ else if(cbis_reg & ZX234502_REG_CBIS_DCIN_PG_MASK) {
+ health = POWER_SUPPLY_HEALTH_GOOD;
+ }
+ else if(ciis_reg & (ZX234502_REG_CIIS_INLIMIT_MASK|ZX234502_REG_CIIS_THERM_MASK)) {
+ health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ }
+ else if(cfis_reg & ZX234502_REG_CFIS_THSD_MASK){
+ health = POWER_SUPPLY_HEALTH_OVERHEAT; /*the chip hot error*/
+ }
+ else{
+ health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ }
+
+ val->intval = health;
+
+ return 0;
+}
+
+int zx234502_charger_get_online(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ u8 v;
+ int ret;
+
+ ret = zx234502_read_mask(bdi, ZX234502_REG_CBIS,ZX234502_REG_CBIS_DCIN_PG_MASK,
+ ZX234502_REG_CBIS_DCIN_PG_SHIFT, &v);
+ if (ret < 0)
+ return ret;
+
+ val->intval = v;
+ return 0;
+}EXPORT_SYMBOL (zx234502_charger_get_online);
+#if 0
+static int zx234502_charger_get_current(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ int curr, ret;
+
+ ret = zx234502_get_field_val(bdi, ZX234502_REG_ISC,
+ ZX234502_REG_ISC_ISET_DCIN_MASK, ZX234502_REG_ISC_ISET_DCIN_SHIFT,
+ zx234502_in_ilimit_values,
+ ARRAY_SIZE(zx234502_in_ilimit_values), &curr);
+ if (ret < 0)
+ return ret;
+
+ val->intval = curr;
+ return 0;
+}
+
+static int zx234502_charger_get_current_max(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ int idx = ARRAY_SIZE(zx234502_in_ilimit_values) - 1;
+
+ val->intval = zx234502_in_ilimit_values[idx];
+ return 0;
+}
+
+static int zx234502_charger_get_voltage(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+#if 0
+ int voltage, ret;
+ ret = zx234502_get_field_val(bdi, ZX234502_REG_CVC,
+ ZX234502_REG_CVC_VBAT_MASK, ZX234502_REG_CVC_VBAT_SHIFT,
+ zx234502_cvc_vseta_values,
+ ARRAY_SIZE(zx234502_cvc_vseta_values), &voltage);
+ if (ret < 0)
+ return ret;
+
+ val->intval = voltage;
+#endif
+return 0;
+}
+#endif
+
+static int zx234502_charger_get_charger_enabled(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ u8 charger_enabled;
+ int ret;
+
+ ret = zx234502_read_mask(bdi, ZX234502_REG_MS,
+ ZX234502_REG_MS_INSUS_MASK,
+ ZX234502_REG_MS_INSUS_SHIFT, &charger_enabled);
+ if (ret < 0)
+ return ret;
+
+ val->intval = !charger_enabled;
+ return 0;
+}
+static int zx234502_charger_get_voltage_max(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ int voltage, ret;
+
+ ret = zx234502_get_field_val(bdi, ZX234502_REG_CVC,
+ ZX234502_REG_CVC_VBAT_MASK, ZX234502_REG_CVC_VBAT_SHIFT,
+ zx234502_cvc_vseta_values,
+ ARRAY_SIZE(zx234502_cvc_vseta_values), &voltage);
+ if (ret < 0)
+ return ret;
+
+ val->intval = voltage;
+ return 0;
+
+}
+#if 0
+static int zx234502_charger_set_current(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ return zx234502_set_field_val(bdi, ZX234502_REG_ISC,
+ ZX234502_REG_ISC_ISET_DCIN_MASK, ZX234502_REG_ISC_ISET_DCIN_MASK,
+ zx234502_in_ilimit_values,
+ ARRAY_SIZE(zx234502_in_ilimit_values), val->intval);
+
+}
+#endif
+static int zx234502_charger_set_voltage(struct zx234502_dev_info *bdi,const union power_supply_propval *val)
+{
+ return zx234502_set_field_val(bdi, ZX234502_REG_CVC,
+ ZX234502_REG_CVC_VBAT_MASK, ZX234502_REG_CVC_VBAT_SHIFT,
+ zx234502_cvc_vseta_values,
+ ARRAY_SIZE(zx234502_cvc_vseta_values), val->intval);
+}
+
+static int zx234502_charger_set_charger_config(struct zx234502_dev_info *bdi,const union power_supply_propval *val)
+{
+ int ret;
+ union power_supply_propval enable_charge;
+
+ if (val->intval){
+ enable_charge.intval = 0 ;
+ stopchg_flag = 1;
+ ret = zx234502_write_mask(bdi, ZX234502_REG_OTGC,
+ ZX234502_REG_OTGC_OTGV_MASK,
+ ZX234502_REG_OTGC_OTGV_SHIFT,1);
+ printk("mmi start chg\n");
+ }
+ else{
+ stopchg_flag = 2;
+ enable_charge.intval = 1 ;
+ ret = zx234502_write_mask(bdi, ZX234502_REG_OTGC,
+ ZX234502_REG_OTGC_OTGV_MASK,
+ ZX234502_REG_OTGC_OTGV_SHIFT,2);
+ printk("mmi stop chg\n");
+ }
+
+ ret = zx234502_write_mask(bdi, ZX234502_REG_MS,
+ ZX234502_REG_MS_INSUS_MASK,
+ ZX234502_REG_MS_INSUS_SHIFT, enable_charge.intval ); /*0:disable 1:enable*/
+
+ return ret;
+}
+
+
+static int zx234502_charger_get_property(struct power_supply *psy,enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct zx234502_dev_info *bdi = container_of(psy, struct zx234502_dev_info, charger);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PC1_AC2:
+ ret = zx234502_charger_get_charge_type(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = zx234502_charger_get_status(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = zx234502_charger_get_health(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = zx234502_charger_get_online(bdi, val);
+ break;
+
+ /*
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = zx234502_charger_get_current(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ ret = zx234502_charger_get_current_max(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = zx234502_charger_get_voltage(bdi, val);
+ break;
+*/
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ ret = zx234502_charger_get_voltage_max(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = zx234502_charger_get_charger_enabled(bdi, val);
+ break;
+ default:
+ ret = -ENODATA;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int zx234502_charger_set_property(struct power_supply *psy,enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct zx234502_dev_info *bdi =
+ container_of(psy, struct zx234502_dev_info, charger);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+#if 0
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = zx234502_charger_set_current(bdi, val);
+ break;
+#endif
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ ret = zx234502_charger_set_voltage(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = zx234502_charger_set_charger_config(bdi, val);
+ power_supply_changed(&bdi->charger);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int zx234502_charger_property_is_writeable(struct power_supply *psy,enum power_supply_property psp)
+{
+ int ret;
+
+ switch (psp)
+ {
+ //case POWER_SUPPLY_PROP_CURRENT_NOW:
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ case POWER_SUPPLY_PROP_CHARGE_ENABLED:
+ ret = 1;
+ break;
+ default:
+ ret = 0;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property zx234502_charger_properties[] = {
+ POWER_SUPPLY_PROP_PC1_AC2,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_ONLINE,
+ //POWER_SUPPLY_PROP_CURRENT_NOW,
+ //POWER_SUPPLY_PROP_CURRENT_MAX,
+ //POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_CHARGE_ENABLED,
+};
+
+static char *zx234502_charger_supplied_to[] = {
+ "main-battery",
+};
+
+static void zx234502_charger_init(struct power_supply *charger)
+{
+ charger->name = "charger";
+ charger->type = POWER_SUPPLY_PCAC_UNKNOWN;
+ charger->properties = zx234502_charger_properties;
+ charger->num_properties = ARRAY_SIZE(zx234502_charger_properties);
+ charger->supplied_to = zx234502_charger_supplied_to;
+ //charger->num_supplies = ARRAY_SIZE(zx234502_charger_supplied_to);
+ charger->get_property = zx234502_charger_get_property;
+ charger->set_property = zx234502_charger_set_property;
+ charger->property_is_writeable = zx234502_charger_property_is_writeable;
+}
+
+/* Battery power supply property routines */
+
+static int zx234502_battery_get_health(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ u8 v;
+ int health, ret;
+
+ mutex_lock(&bdi->bs_reg_lock);
+
+ if(true!=bdi->pdata->ts_flag){
+ val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
+ mutex_unlock(&bdi->bs_reg_lock);
+ return 0;
+ }
+
+ if (bdi->battery_health_valid) {
+ v = bdi->ciis_curr_reg;
+ bdi->battery_health_valid = false;
+ } else {
+
+ ret = zx234502_read(bdi, ZX234502_REG_CIIS, &v);
+ if (ret < 0){
+
+ mutex_unlock(&bdi->bs_reg_lock);
+ return ret;
+ }
+ }
+
+ if (v & ZX234502_REG_CIIS_THERM_MASK) {
+ health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ } else {
+ v &= ZX234502_REG_CIIS_TS_METER_MASK;
+ v >>= ZX234502_REG_CIIS_TS_METER_SHIFT;
+
+ switch (v) {
+ case ZX234502_REG_CISS_TS_NORMAL: /* Normal */
+ health = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case ZX234502_REG_CISS_TS_WARM: /*warm*/
+ health = POWER_SUPPLY_HEALTH_WARM;
+ break;
+ case ZX234502_REG_CISS_TS_HOT: /* TS1 Hot */
+ health = POWER_SUPPLY_HEALTH_OVERHEAT;
+ break;
+ case ZX234502_REG_CISS_TS_COOL:/*Cool*/
+ health = POWER_SUPPLY_HEALTH_COOL;
+ break;
+ case ZX234502_REG_CISS_TS_COLD: /* TS1 Cold */
+ health = POWER_SUPPLY_HEALTH_COLD;
+ break;
+ default:
+ health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ }
+ }
+
+ val->intval = health;
+ mutex_unlock(&bdi->bs_reg_lock);
+ return 0;
+}
+
+static int zx234502_battery_get_online(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ u8 batfet_disable;
+ int ret;
+
+ ret = zx234502_read_mask(bdi, ZX234502_REG_CBIS,
+ ZX234502_REG_CBIS_NOBAT_MASK,
+ ZX234502_REG_CBIS_NOBAT_SHIFT, &batfet_disable);
+ if (ret < 0)
+ return ret;
+
+ val->intval = !batfet_disable;
+ return 0;
+}
+#if 0
+static int zx234502_battery_get_capacity(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ int ret;
+ uint volt;
+ int bat_levl = 0;
+ int i =0;
+ //union power_supply_propval * online;
+ struct zx234502_bat_calibration *calibration;
+
+ //zx234502_charger_get_online(bdi,online);
+
+ u8 v;
+ ret = zx234502_read_mask(bdi, ZX234502_REG_CBIS,ZX234502_REG_CBIS_DCIN_PG_MASK,
+ ZX234502_REG_CBIS_DCIN_PG_SHIFT, &v);
+ if(v)
+ calibration = bdi->pdata->charging;
+ else
+ calibration = bdi->pdata->discharging;
+//#ifdef CONFIG_ZX234290_ADC
+ volt = get_battery_voltage();
+//#endif
+ if (volt > calibration[0].voltage) {
+ bat_levl = calibration[0].level;
+ } else {
+ for (i = 0; calibration[i+1].voltage >= 0; i++) {
+ if (volt <= calibration[i].voltage &&
+ volt >= calibration[i+1].voltage) {
+ /* interval found - interpolate within range */
+ bat_levl = calibration[i].level -
+ ((calibration[i].voltage - volt) *
+ (calibration[i].level -
+ calibration[i+1].level)) /
+ (calibration[i].voltage -
+ calibration[i+1].voltage);
+ break;
+ }
+ }
+ }
+
+ val->intval = bat_levl;
+ //return 0;
+
+ return ret;
+}
+#endif
+
+static int zx234502_battery_set_online(struct zx234502_dev_info *bdi,const union power_supply_propval *val)
+{
+ return zx234502_write_mask(bdi, ZX234502_REG_MS,
+ ZX234502_REG_MS_ENSHIP_MASK,
+ ZX234502_REG_MS_ENSHIP_SHIFT, !val->intval); /*1:enable 0:disable*/
+}
+
+
+static int zx234502_battery_get_property(struct power_supply *psy,enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct zx234502_dev_info *bdi =
+ container_of(psy, struct zx234502_dev_info, battery);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = zx234502_battery_get_health(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = zx234502_battery_get_online(bdi, val);
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = get_adc2_voltage();
+ ret = 0;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ //#ifdef CONFIG_ZX234290_ADC
+ val->intval = get_adc1_voltage() - 15;
+ ret = 0;
+ break;
+#if 0
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = zx234502_battery_get_capacity(bdi, val);
+ break;
+#endif
+ default:
+ ret = -ENODATA;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int zx234502_battery_set_property(struct power_supply *psy,enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct zx234502_dev_info *bdi =
+ container_of(psy, struct zx234502_dev_info, battery);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_put_sync(bdi->dev);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = zx234502_battery_set_online(bdi, val);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int zx234502_battery_property_is_writeable(struct power_supply *psy,enum power_supply_property psp)
+{
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = 1;
+ break;
+ default:
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property zx234502_battery_properties[] = {
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ //POWER_SUPPLY_PROP_CAPACITY,
+};
+
+static void zx234502_battery_init(struct power_supply *battery)
+{
+ battery->name = "battery";
+ battery->type = POWER_SUPPLY_PCAC_UNKNOWN;
+ battery->properties = zx234502_battery_properties;
+ battery->num_properties = ARRAY_SIZE(zx234502_battery_properties);
+ battery->get_property = zx234502_battery_get_property;
+ battery->set_property = zx234502_battery_set_property;
+ battery->property_is_writeable = zx234502_battery_property_is_writeable;
+}
+
+
+static int zx234502_boost_get_online(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+
+ val->intval = bdi->boost_online_flag;
+ return 0;
+}
+
+
+static int zx234502_boost_get_current_now(struct zx234502_dev_info *bdi,union power_supply_propval *val)
+{
+ //gpio_set1 is GPIO39
+ //gpio_set2 is GPIO40
+ //gpio_set3 is GPIO41
+ int gpio_set1,gpio_set2,gpio_set3;
+
+ gpio_set1 = gpio_get_value(bdi->pdata->boost_cur_gpio1);
+ gpio_set2 = gpio_get_value(bdi->pdata->boost_cur_gpio2);
+ gpio_set3 = gpio_get_value(bdi->pdata->boost_cur_gpio3);
+
+ if((GPIO_LOW==gpio_set1)&(GPIO_LOW==gpio_set2)&(GPIO_HIGH==gpio_set3)){
+ val->intval = 600;
+ }
+ else if((GPIO_LOW==gpio_set1)&(GPIO_HIGH==gpio_set2)&(GPIO_LOW==gpio_set3)){
+ val->intval = 1000;
+ }
+ else if((GPIO_LOW==gpio_set1)&(GPIO_HIGH==gpio_set2)&(GPIO_HIGH==gpio_set3)){
+ val->intval = 1750;
+ }
+ else if((GPIO_HIGH==gpio_set1)&(GPIO_LOW==gpio_set2)&(GPIO_LOW==gpio_set3)){
+ val->intval = 2000;
+ }
+ else if((GPIO_HIGH==gpio_set1)&(GPIO_LOW==gpio_set2)&(GPIO_HIGH==gpio_set3)){
+ val->intval = 2850;
+ }
+ else{
+
+ dev_dbg(bdi->dev, "The boost current set with err\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+#if 0
+static int zx234502_boost_get_current_max(struct zx234502_dev_info *bdi, union power_supply_propval *val)
+{
+ val->intval = 2850;
+ return 0;
+}
+#endif
+static int zx234502_boost_set_charge_enable(struct zx234502_dev_info *bdi,const union power_supply_propval *val)
+{
+ zx234502_write_mask(bdi,ZX234502_REG_MS,
+ ZX234502_REG_MS_PWRBNK_MASK,ZX234502_REG_MS_PWRBNK_SHIFT,val->intval);
+
+ /*set the gpio34 open = HIGH*/
+ gpio_set_value(bdi->pdata->boost_loadswitch_gpio,val->intval);
+ //zx29_gpio_output_data(bdi->pdata->boost_loadswitch_gpio,GPIO_HIGH);
+
+ return 0;
+}
+
+static int zx234502_boost_set_current_now(struct zx234502_dev_info *bdi,const union power_supply_propval *val)
+{
+ //gpio from 35/36/37 changed to 39/40/41
+ //gpio_set1 is GPIO39
+ //gpio_set2 is GPIO40
+ //gpio_set3 is GPIO41
+ int gpio_set1,gpio_set2,gpio_set3;
+
+ if(val->intval < 601){
+ /*0.6A GPIO35:LOW GPIO36:LOW GPIO37:HIGH 40k */
+ gpio_set1 = GPIO_LOW;
+ gpio_set2 = GPIO_LOW;
+ gpio_set3 = GPIO_HIGH;
+ }
+ else if( (600 < val->intval)&&(val->intval< 1001)){
+ /*1A GPIO35:LOW GPIO36:HIGH GPIO37:LOW 20k */
+ gpio_set1 = GPIO_LOW;
+ gpio_set2 = GPIO_HIGH;
+ gpio_set3 = GPIO_LOW;
+ }
+ else if( (1000 < val->intval)&&(val->intval < 1751)){
+ /*1.75A GPIO35:LOW GPIO36:HIGH GPIO37:HIGH 13.3k*/
+ gpio_set1 = GPIO_LOW;
+ gpio_set2 = GPIO_HIGH;
+ gpio_set3 = GPIO_HIGH;
+ }
+ else if(( 1750 < val->intval) &&( val->intval < 2001)){
+ /*2A GPIO35:HIGH GPIO36:LOW GPIO37:LOW 10k */
+ gpio_set1 = GPIO_HIGH;
+ gpio_set2 = GPIO_LOW;
+ gpio_set3 = GPIO_LOW;
+ }
+ else{
+ /*2.85A GPIO35:HIGH GPIO36:LOW GPIO37:HIGH 8k*/
+ gpio_set1 = GPIO_HIGH;
+ gpio_set2 = GPIO_LOW;
+ gpio_set3 = GPIO_HIGH;
+ }
+
+ gpio_set_value(bdi->pdata->boost_cur_gpio1, gpio_set1);
+ gpio_set_value(bdi->pdata->boost_cur_gpio2, gpio_set2);
+ gpio_set_value(bdi->pdata->boost_cur_gpio3, gpio_set3);
+ return 0;
+}
+
+static int zx234502_boost_get_property(struct power_supply *psy,enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct zx234502_dev_info *bdi =
+ container_of(psy, struct zx234502_dev_info, boost);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_get_sync(bdi->dev);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = zx234502_boost_get_online(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = zx234502_boost_get_current_now(bdi, val);
+ break;
+ #if 0
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ ret = zx234502_boost_get_current_max(bdi, val);
+ break;
+ #endif
+ default:
+ ret = -ENODATA;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int zx234502_boost_set_property(struct power_supply *psy,enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct zx234502_dev_info *bdi =
+ container_of(psy, struct zx234502_dev_info, boost);
+ int ret;
+
+ //dev_dbg(bdi->dev, "prop: %d\n", psp);
+
+ //pm_runtime_put_sync(bdi->dev);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_BOOST_ENABLE:
+ ret = zx234502_boost_set_charge_enable(bdi, val);
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = zx234502_boost_set_current_now(bdi, val);
+ break;
+
+ default:
+ ret = -EINVAL;
+ }
+
+ //pm_runtime_put_sync(bdi->dev);
+ return ret;
+}
+
+static int zx234502_boost_property_is_writeable(struct power_supply *psy,enum power_supply_property psp)
+{
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_BOOST_ENABLE:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = 1;
+ break;
+ default:
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property zx234502_boost_properties[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ //WER_SUPPLY_PROP_CURRENT_MAX,
+ POWER_SUPPLY_PROP_BOOST_ENABLE,
+};
+
+static void zx234502_boost_init(struct power_supply *boost)
+{
+ #ifdef DBG_CHARGE
+ //printk(KERN_INFO "zx234502_boost_init =%x.\n",boost);
+ #endif
+ boost->name = "boost";
+ boost->type = POWER_SUPPLY_PCAC_UNKNOWN;
+ boost->properties = zx234502_boost_properties;
+ boost->num_properties = ARRAY_SIZE(zx234502_boost_properties);
+ boost->get_property = zx234502_boost_get_property;
+ boost->set_property = zx234502_boost_set_property;
+ boost->property_is_writeable = zx234502_boost_property_is_writeable;
+}
+
+
+static int zx234502_charger_gpio_config(struct device *dev,int pin,gpio_func_id func_sel,char *name)
+{
+ int ret = -1;
+
+ if (gpio_is_valid(pin)){
+ ret = gpio_request(pin, name);
+ if (ret){
+ dev_err(dev, "cannot get [%s] gpio\n",name);
+ return -1;
+ }
+ ret = zx29_gpio_config(pin,func_sel);
+ if(ret){
+ dev_err(dev, "cannot config [%s] gpio\n",name);
+ gpio_free(pin);
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+#if 0
+//zx234500_charger_gpio_config_input
+static void zx234502_charger_gpio_config_input(struct device *dev,int gpio,gpio_func_id func_sel,char *str)
+{
+ if(zx234502_charger_gpio_config(dev,gpio,func_sel,str)!=0)
+ return;
+ zx29_gpio_set_direction(gpio,GPIO_IN);
+ zx29_gpio_input_data(gpio);
+}
+#endif
+
+//zx234500_charger_gpio_config_output
+static int zx234502_charger_gpio_config_output(struct device *dev,int gpio,gpio_func_id func_sel,char *str,int value2)
+{
+ if(zx234502_charger_gpio_config(dev,gpio,func_sel,str)!=0)
+ return -1;
+ zx29_gpio_set_direction(gpio,GPIO_OUT);
+ zx29_gpio_output_data(gpio,value2);
+
+ return 0;
+}
+
+static int zx234502_boost_gpio_init(struct device *dev, struct zx234502_platform_data *pdata)
+{
+ int ret = -1;
+
+ ret = zx234502_charger_gpio_config_output(dev,pdata->boost_loadswitch_gpio,pdata->boost_loadswitch_fun_sel,"LoadSwitch",GPIO_LOW);
+ /*set the out put current 1A*/
+ ret += zx234502_charger_gpio_config_output(dev,pdata->boost_cur_gpio1,pdata->boost_gpio1_fun_sel,"Iset1",GPIO_LOW);
+ ret += zx234502_charger_gpio_config_output(dev,pdata->boost_cur_gpio2,pdata->boost_gpio2_fun_sel,"Iset2",GPIO_HIGH);
+ ret += zx234502_charger_gpio_config_output(dev,pdata->boost_cur_gpio3,pdata->boost_gpio3_fun_sel,"Iset3",GPIO_LOW);
+
+ return ret;
+}
+
+static void zx234502_boost_gpio_uninit(struct zx234502_platform_data *pdata)
+{
+ gpio_free(pdata->boost_loadswitch_gpio);
+ gpio_free(pdata->boost_cur_gpio1);
+ gpio_free(pdata->boost_cur_gpio2);
+ gpio_free(pdata->boost_cur_gpio3);
+}
+
+/*
+ when BAT goes under BAEdet(3.4V) or CHGRST set 1
+ Group B(A1,A2,A3,A4,A5,A7) registers will reset
+ call this function in init or dcin
+*/
+static int zx234502_charger_config_groupB_Regs(struct zx234502_dev_info *bdi)
+{
+ int ret;
+
+ /*set VINDPM to 4.52V*/
+ ret = zx234502_write_mask(bdi,ZX234502_REG_ISC,
+ ZX234502_REG_ISC_VINDPM_MASK,
+ ZX234502_REG_ISC_VINDPM_SHIFT,
+ 0x8);
+ /*set VSETA to 4.2V*/
+ ret += zx234502_write_mask(bdi,ZX234502_REG_CVC,
+ ZX234502_REG_CVC_VBAT_MASK,
+ ZX234502_REG_CVC_VBAT_SHIFT,
+ 0x2);
+
+ /*disable the timer*/
+ ret += zx234502_write_mask(bdi,ZX234502_REG_CTC,
+ ZX234502_REG_CTC_EN_TIMER_MASK,
+ ZX234502_REG_CTC_EN_TIMER_SHIFT,
+ 0x0);
+ /*disable the 2*timer*/
+ ret += zx234502_write_mask(bdi,ZX234502_REG_CTC,
+ ZX234502_REG_CTC_EN_2XTIMER_MASK,
+ ZX234502_REG_CTC_EN_2XTIMER_SHIFT,
+ 0x0);
+ /*set CVCOMP to 20mV*/
+ ret += zx234502_write_mask(bdi,ZX234502_REG_CTC,
+ ZX234502_REG_CTC_CVCOMP_MASK,
+ ZX234502_REG_CTC_CVCOMP_SHIFT,
+ 0x4);
+
+
+ /*disable the JETTA*/
+ ret += zx234502_write_mask(bdi,ZX234502_REG_THR,
+ ZX234502_REG_THR_EN_JEITA_MASK,
+ ZX234502_REG_THR_EN_JEITA_SHIFT,
+ 0x0);
+
+ /*set the temprator cool */
+ /*00:0 01:5 10:10 11:15*/
+ ret += zx234502_write_mask(bdi,ZX234502_REG_TS,
+ ZX234502_REG_TS_COOL_MASK,
+ ZX234502_REG_TS_COOL_SHIFT,
+ 0x0);
+
+ if (ret < 0){
+ goto out;
+ }
+
+ return 0;
+
+ out:
+ //pm_runtime_put_sync(bdi->dev);
+ dev_err(bdi->dev, "zx234502_charger_groupB_config ERROR: %d\n", ret);
+ return ret;
+
+}
+
+static int zx234502_hw_init(struct zx234502_dev_info *bdi)
+{
+ u8 v;
+ int ret;
+
+ union power_supply_propval voltage_val = {0};
+
+#ifdef DBG_CHARGE
+ //set pshold1 1,just for test
+ //gpio_request(ZX29_GPIO_51, "pshold1");
+ //zx29_gpio_config(ZX29_GPIO_51, GPIO51_GPIO51);
+ //zx29_gpio_set_direction(ZX29_GPIO_51, GPIO_OUT);
+ //zx29_gpio_output_data(ZX29_GPIO_51, 1);
+#endif
+ //pm_runtime_get_sync(bdi->dev);
+
+ /* First check that the device really is what its supposed to be */
+ ret = zx234502_read_mask(bdi, ZX234502_REG_VER,
+ ZX234502_REG_VER_INFO_MASK,
+ ZX234502_REG_VER_INFO_SHIFT,
+ &v);
+
+ if (ret < 0){
+ goto out;
+ }
+ //printk(KERN_INFO "zx234502_hw_init:zx234502-charger version reg: 0x%x\n", v);
+ /*
+ if (v != bdi->model) {
+ ret = -ENODEV;
+ goto out;
+ }
+ */
+ voltage_val.intval = 4350;
+ ret = zx234502_charger_set_voltage(bdi,&voltage_val);
+ if (ret < 0){
+ goto out;
+ }
+
+ /*disable the timer*/
+ ret = zx234502_write_mask(bdi,ZX234502_REG_CTC,
+ ZX234502_REG_CTC_EN_TIMER_MASK,
+ ZX234502_REG_CTC_EN_TIMER_SHIFT,
+ 0x0);
+ if (ret < 0){
+ goto out;
+ }
+ /*disable the 2*timer*/
+ ret = zx234502_write_mask(bdi,ZX234502_REG_CTC,
+ ZX234502_REG_CTC_EN_2XTIMER_MASK,
+ ZX234502_REG_CTC_EN_2XTIMER_SHIFT,
+ 0x0);
+
+ if (ret < 0){
+ goto out;
+ }
+
+ //enable PMUON
+ //ret = zx234502_write_mask(bdi,ZX234502_REG_MS,
+ // ZX234502_REG_MS_PMUON_MASK,
+ // ZX234502_REG_MS_PMUON_SHIFT,
+ // 0x1);
+ //config NTCDET
+ // 0:enable auto ntc detection
+ // 1:disable auto ntc detection
+ ret += zx234502_write_mask(bdi,ZX234502_REG_PTS,
+ ZX234502_REG_PTS_NTCDET_MASK,
+ ZX234502_REG_PTS_NTCDET_SHIFT,
+ 0x1);
+ //when NTCDET is 1 ,TSSEL is to select R
+ // 0:10k
+ // 1:100k
+ //ret += zx234502_write_mask(bdi,ZX234502_REG_PTS,
+ // ZX234502_REG_PTS_TSSEL_MASK,
+ // ZX234502_REG_PTS_TSSEL_SHIFT,
+ // 0x0);
+
+ /*disable the charger detect*/
+ ret += zx234502_write_mask(bdi,ZX234502_REG_THR,
+ ZX234502_REG_THR_EN_2DET_MASK,
+ ZX234502_REG_THR_EN_2DET_SHIFT,
+ 0x0);
+ ret += zx234502_write_mask(bdi,ZX234502_REG_THR,
+ ZX234502_REG_THR_EN_1DET_MASK,
+ ZX234502_REG_THR_EN_1DET_SHIFT,
+ 0x0);
+ //enable charger
+ ret += zx234502_write_mask(bdi,ZX234502_REG_MS,
+ ZX234502_REG_MS_ENCHG_MASK,
+ ZX234502_REG_MS_ENCHG_SHIFT,
+ 0x0);
+ ret += zx234502_write_mask(bdi,ZX234502_REG_MS,
+ ZX234502_REG_MS_INSUS_MASK,
+ ZX234502_REG_MS_INSUS_SHIFT,
+ 0x0);
+ //mask /SAFE it
+ ret += zx234502_write_mask(bdi,ZX234502_REG_CBIM,ZX234502_REG_CBIM_MASK_SAFE_TIMER_MASK,
+ ZX234502_REG_CBIM_MASK_SAFE_TIMER_SHIFT,0x1);
+ //mask CHGRUN it
+ ret += zx234502_write_mask(bdi,ZX234502_REG_CIIM,ZX234502_REG_CIIM_MASK_CHGRUN_MASK,
+ ZX234502_REG_CIIM_MASK_CHGRUN_SHIFT,0x1);
+ //mask INLIMIT it
+ ret += zx234502_write_mask(bdi,ZX234502_REG_CIIM,ZX234502_REG_CIIM_MASK_INLIMIT_MASK,
+ ZX234502_REG_CIIM_MASK_INLIMIT_SHIFT,0x1);
+ //mask DCDET it
+ ret += zx234502_write_mask(bdi,ZX234502_REG_CIIM,ZX234502_REG_CIIM_MASK_DCDET_MASK,
+ ZX234502_REG_CIIM_MASK_DCDET_SHIFT,0x1);
+ if (ret < 0){
+ goto out;
+ }
+
+ //set ts_meter interrupt mask
+ if(true !=bdi->pdata->ts_flag){
+ zx234502_write_mask(bdi,ZX234502_REG_CIIM,ZX234502_REG_CIIM_MASK_TS_MASK,
+ ZX234502_REG_CIIM_MASK_TS_SHIFT,0x1);
+ }
+
+ return 0;
+
+out:
+ //pm_runtime_put_sync(bdi->dev);
+ dev_err(bdi->dev, "zx234502_hw_init err: %d\n", ret);
+ return ret;
+}
+
+
+static irqreturn_t zx234502_charger_irq_primary_handler(int irq, struct zx234502_dev_info *bdi)
+{
+ disable_irq_nosync(irq);
+ //pcu_int_clear(irq);
+ pcu_clr_irq_pending(irq);
+
+ up(&bdi->chgirq_sem);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t zx234502_irq_handler_thread(void *data)
+{
+ struct zx234502_dev_info *bdi = data;
+ bool charger_changed_flag = false;
+ bool battery_changed_flag = false;
+ bool boost_changed_flag = false;
+ int ret;
+ u8 ms;
+ struct sched_param param = { .sched_priority = 2 };
+ param.sched_priority= 31;
+ sched_setscheduler(current, SCHED_FIFO, ¶m);
+
+ while(1)
+ {
+ down(&bdi->chgirq_sem);
+ //pm_runtime_get_sync(bdi->dev);
+ mutex_lock(&bdi->bs_reg_lock);
+ bdi->cbis_pre_reg=bdi->cbis_curr_reg;
+ bdi->pis_pre_reg=bdi->pis_curr_reg;
+ bdi->ciis_pre_reg=bdi->ciis_curr_reg;
+ bdi->cfis_pre_reg = bdi->cfis_curr_reg;
+
+ //printk(KERN_INFO"zx234502_irq_handler_thread\n");
+
+
+ ret = zx234502_read(bdi, ZX234502_REG_MS, &ms);
+ if (ret < 0) {
+ dev_err(bdi->dev, "Can't read MS reg: %d\n", ret);
+ mutex_unlock(&bdi->bs_reg_lock);
+ goto out;
+ }
+ //printk("zx234502 MS reg is %d",ms);
+
+ ret = zx234502_read(bdi, ZX234502_REG_CBIS, &bdi->cbis_curr_reg);
+ if (ret < 0) {
+ dev_err(bdi->dev, "Can't read CBIS reg: %d\n", ret);
+ mutex_unlock(&bdi->bs_reg_lock);
+ goto out;
+ }
+
+
+ ret = zx234502_read(bdi, ZX234502_REG_PIS, &bdi->pis_curr_reg);
+ if (ret < 0) {
+ dev_err(bdi->dev, "Can't read PIS reg: %d\n", ret);
+ mutex_unlock(&bdi->bs_reg_lock);
+ goto out;
+ }
+
+ ret = zx234502_read(bdi, ZX234502_REG_CIIS, &bdi->ciis_curr_reg);
+ if (ret < 0) {
+ dev_err(bdi->dev, "Can't read CIIS reg: %d\n", ret);
+ mutex_unlock(&bdi->bs_reg_lock);
+ goto out;
+ }
+ printk("cbis_reg: 0x%02x, pis_reg: 0x%02x, ciis_reg: 0x%02x\n",
+ bdi->cbis_curr_reg, bdi->pis_curr_reg, bdi->ciis_curr_reg);
+ /*clear the A10 int*/
+ ret = zx234502_write_mask(bdi, ZX234502_REG_CIIS,ZX234502_REG_CIIS_INT_MASK,ZX234502_REG_CIIS_INT_SHIFT,0);
+
+ if (ret < 0) {
+ printk(KERN_INFO"chg clear int failed 1\n");
+ ret = zx234502_write_mask(bdi, ZX234502_REG_CIIS,ZX234502_REG_CIIS_INT_MASK,ZX234502_REG_CIIS_INT_SHIFT,0);
+ if (ret < 0) {
+ printk(KERN_INFO"chg clear int failed 2\n");
+ ret = zx234502_write_mask(bdi, ZX234502_REG_CIIS,ZX234502_REG_CIIS_INT_MASK,ZX234502_REG_CIIS_INT_SHIFT,0);
+ if (ret < 0) {
+ printk(KERN_INFO"chg clear int failed 3\n");
+ }
+ else{
+ printk(KERN_INFO"chg clear int failed ok 3\n");
+ //panic(0);
+ }
+ }
+ else{
+ printk(KERN_INFO"chg clear int failed ok 2\n");
+ }
+ }
+
+ if(bdi->cbis_curr_reg != bdi->cbis_pre_reg){
+ if ((bdi->cbis_curr_reg & ZX234502_REG_CBIS_DCIN_PG_MASK) != (bdi->cbis_pre_reg & ZX234502_REG_CBIS_DCIN_PG_MASK)) {
+ if(bdi->cbis_curr_reg & ZX234502_REG_CBIS_DCIN_PG_MASK){
+ //zx234502_hw_init(bdi);
+ printk(KERN_INFO"chg usb in\n");
+ dwc_otg_chg_inform(0);/*usb in*/
+
+ ret = zx234502_charger_config_groupB_Regs(bdi);
+ if(ret)
+ {
+ printk(KERN_INFO"chg config groupB Regs failed\n");
+ }
+ // ret = zx234502_write_mask(bdi,ZX234502_REG_MS,ZX234502_REG_MS_PMUON_MASK,ZX234502_REG_MS_PMUON_SHIFT,0x1);
+ }
+ else{
+ printk(KERN_INFO"chg usb out\n");
+ dwc_otg_chg_inform(1);/*usb out*/
+ bdi->charger.type = POWER_SUPPLY_PCAC_UNKNOWN;
+ // ret = zx234502_write_mask(bdi,ZX234502_REG_MS,ZX234502_REG_MS_PMUON_MASK,ZX234502_REG_MS_PMUON_SHIFT,0x0);
+ }
+ }
+ charger_changed_flag = true;
+ }
+
+ if(true == bdi->pdata->boost_flag){
+ if (bdi->pis_curr_reg != bdi->pis_pre_reg) {
+ if(bdi->pis_curr_reg & ZX234502_REG_PIS_POWERON_IT_MASK){
+ queue_delayed_work(g_bdi->boostQueue,&bdi->boostWorkStruct,2000);
+ }
+ boost_changed_flag = true;
+ bdi->boost_online_flag = 1;
+ }
+ }
+
+ if (bdi->ciis_curr_reg != bdi->ciis_pre_reg) {
+ if(true == bdi->pdata->ts_flag){
+ if((bdi->ciis_curr_reg & ZX234502_REG_CIIS_TS_METER_MASK) != (bdi->ciis_pre_reg & ZX234502_REG_CIIS_TS_METER_MASK)){
+#ifdef DBG_CHARGE
+ switch((bdi->ciis_curr_reg&ZX234502_REG_CIIS_TS_METER_MASK )>>ZX234502_REG_CIIS_TS_METER_SHIFT){
+ case 0:
+#ifdef DBG_CHARGE
+ printk(KERN_INFO"chg bat temp nomrmal\n");
+#endif
+ break;
+ case ZX234502_REG_CISS_TS_WARM:/*warm*/
+ /*in warm state,stop boost*/
+#ifdef DBG_CHARGE
+ printk(KERN_INFO"chg bat temp warm \n");
+#endif
+ break;
+ case ZX234502_REG_CISS_TS_COOL:/*cool*/
+ /*in cool state,stop boost*/
+#ifdef DBG_CHARGE
+ printk(KERN_INFO"chg bat temp cool\n");
+#endif
+ //chg_disable.intval = 1;
+ //pwrbnk_enable.intval = 0;
+ //zx234502_charger_set_charger_config(bdi,&chg_disable);
+ //zx234502_boost_set_charge_enable(bdi, &pwrbnk_enable);
+ break;
+ case 3:/*hot*/
+ /*in hot state,charger chip auto off*/
+ printk(KERN_INFO"chg bat temp hot \n");
+ break;
+ case 6:/*cold*/
+ /*in cold state,charger chip auto off*/
+ printk(KERN_INFO"chg bat temp cold\n");
+ break;
+ default:
+ printk(KERN_INFO"chg bat temp unkonw\n");
+ break;
+ }
+#endif
+ }
+ }
+ battery_changed_flag = true;
+ }
+ bdi->charger_health_valid = true;/****?***/
+ bdi->battery_health_valid = true;/****?***/
+ bdi->battery_status_valid = true;/****?***/
+
+ mutex_unlock(&bdi->bs_reg_lock);
+
+ /*
+ * Sometimes zx234502 gives a steady trickle of interrupts even
+ * though the watchdog timer is turned off and neither the STATUS
+ * nor FAULT registers have changed. Weed out these sprurious
+ * interrupts so userspace isn't alerted for no reason.
+ * In addition, the chip always generates an interrupt after
+ * register reset so we should ignore that one (the very first
+ * interrupt received).
+ */
+ //if (charger_changed_flag && !bdi->first_time)
+ if (charger_changed_flag )
+ power_supply_changed(&bdi->charger);
+ //if (battery_changed_flag && !bdi->first_time)
+ if (battery_changed_flag)
+ power_supply_changed(&bdi->battery);
+ if (true == bdi->pdata->boost_flag){
+ //if (boost_changed_flag && !bdi->first_time)
+ if (boost_changed_flag )
+ power_supply_changed(&bdi->boost);
+ }
+
+ bdi->first_time = false;
+
+ out:
+ //pm_runtime_put_sync(bdi->dev);
+
+ dev_dbg(bdi->dev, "read reg:cbis_reg: 0x%02x, pis_reg: 0x%02x, ciis_reg: 0x%02x\n",
+ bdi->cbis_curr_reg, bdi->pis_curr_reg, bdi->ciis_curr_reg);
+
+ enable_irq(bdi->irq);
+ }
+ return 0;
+}
+
+
+static int zx234502_setup_pdata(struct zx234502_dev_info *bdi,
+ struct zx234502_platform_data *pdata)
+{
+ int ret;
+
+#if 0
+ if (!gpio_is_valid(pdata->gpio_int))
+ return -1;
+
+ ret = gpio_request(pdata->gpio_int, dev_name(bdi->dev));
+ if (ret < 0)
+ return -1;
+
+ ret = gpio_direction_input(pdata->gpio_int);
+ if (ret < 0)
+ goto out;
+
+ bdi->irq = gpio_to_irq(pdata->gpio_int);
+ if (!bdi->irq)
+ goto out;
+#endif
+
+ bdi->irq = gpio_to_irq(pdata->gpio_int);
+ #ifdef DBG_CHARGE
+ printk(KERN_INFO"zx234502_setup_pdata irq= %d\n",bdi->irq);
+ #endif
+ /*Ñ¡Ôñ´Ë¸´Óù¦ÄÜΪÖжϹ¦ÄÜ*/
+ ret = zx29_gpio_config(pdata->gpio_int,pdata->gpio_int_fun_sel);/********GPIO11:0 /EXT_INT:5*******/
+ if (ret < 0){
+ printk(KERN_INFO"zx234502 zx29_gpio_config error int= %d,fun= %d\n",pdata->gpio_int,pdata->gpio_int_fun_sel);
+ return -1;
+ }
+
+ zx29_gpio_set_inttype(pdata->gpio_int,IRQ_TYPE_EDGE_FALLING/*IRQ_TYPE_EDGE_RISING*/); //INT_POSEDGE
+ zx29_gpio_pd_pu_set(pdata->gpio_int, IO_CFG_PULL_DISABLE);
+
+ bdi->gpio_int = pdata->gpio_int;
+ //pcu_int_clear(bdi->irq);
+ pcu_clr_irq_pending(bdi->irq);
+ return 0;
+#if 0
+out:
+ gpio_free(pdata->gpio_int);
+ return -1;
+#endif
+
+}
+
+
+static int zx234502_init_state(struct zx234502_dev_info *bdi)
+{
+ u8 cfis_reg,pis_reg,cbis_reg,ciis_reg;
+ int ret;
+
+ printk(KERN_INFO "zx234502_init_state start.\n");
+
+ ret = zx234502_read(bdi, ZX234502_REG_CBIS, &cbis_reg);
+ if (ret < 0){
+ printk(KERN_INFO "charger:init state:Can't read CBIS reg: 0x%x\n", cbis_reg);
+ return ret;
+ }
+
+ ret = zx234502_read(bdi, ZX234502_REG_PIS, &pis_reg);
+ if (ret < 0) {
+ printk(KERN_INFO "charger:init Power On /PMID state:Can't read PIS reg: %d\n", ret);
+ return ret;
+ }
+
+ ret = zx234502_read(bdi, ZX234502_REG_CFIS, &cfis_reg);
+ if (ret < 0) {
+ printk(KERN_INFO "charger:init Power On /PMID state:Can't read CFIS reg: %d\n", ret);
+ return ret;
+ }
+
+ ret = zx234502_read(bdi, ZX234502_REG_CIIS, &ciis_reg);
+ if (ret < 0) {
+ printk(KERN_INFO "charger:init Power On /PMID state:Can't read CISS reg: %d\n", ret);
+ return ret;
+ }
+
+ mutex_lock(&bdi->bs_reg_lock);
+ #ifdef DBG_CHARGE
+ printk(KERN_INFO "zx234502_init_state get lock ok.\n");
+ #endif
+ bdi->cbis_curr_reg= cbis_reg;
+ bdi->pis_curr_reg= pis_reg;
+ bdi->cfis_curr_reg= cfis_reg;
+ bdi->ciis_curr_reg = ciis_reg;
+ bdi->charger.type = POWER_SUPPLY_TYPE_UNKNOWN;
+
+ if(bdi->cbis_curr_reg & ZX234502_REG_CBIS_DCIN_PG_MASK){
+ printk(KERN_INFO"send ap usb in message\n");
+ dwc_otg_chg_inform(0);/*usb in*/
+ }
+ else{
+ printk(KERN_INFO"send ap usb out message\n");
+ dwc_otg_chg_inform(1);/*usb out*/
+ }
+ #ifdef DBG_CHARGE
+ if(bdi->cbis_curr_reg & BIT(5))
+ printk(KERN_INFO "no batterty.\n");
+ else
+ printk(KERN_INFO " baterry installed.\n");
+ #endif
+ mutex_unlock(&bdi->bs_reg_lock);
+#ifdef DBG_CHARGE
+ printk(KERN_INFO "zx234502_init_state:cfis_reg10=0x%x,pis_reg0E=0x%x,cbis_reg0C=0x%x,ciis_reg0A=0x%x.\n",cfis_reg,pis_reg,cbis_reg,ciis_reg);
+#endif
+
+ return 0;
+}
+
+
+static void zx234502_boost_workstruct_callback(struct work_struct *work )
+{
+ uint vol_curr = 0;
+ #ifdef DBG_CHARGE
+ u8 mainset;
+ #endif
+ struct zx234502_dev_info *bdi =
+ container_of(work, struct zx234502_dev_info, boostWorkStruct);
+ vol_curr = get_adc2_voltage();/*get boost current*/
+ #ifdef DBG_CHARGE
+ printk(KERN_INFO"boost current is %d in\n",vol_curr);
+ zx234502_read(bdi, 0, &mainset);
+ printk(KERN_INFO"powerbank is %d in\n",mainset);
+ printk(KERN_INFO"workqueue test\n");
+ #endif
+ if (vol_curr < ZX234502_BOOST_V_LIMIT)/*50mV*/{
+ bdi->boostcount++;
+ }
+ if(bdi->boostcount > 3){
+ bdi->boostcount = 0;
+ bdi->boost_online_flag = 0;
+ power_supply_changed(&bdi->boost);
+ cancel_delayed_work_sync(&bdi->boostWorkStruct);
+ }
+ else{
+ bdi->boost_online_flag = 1;
+ queue_delayed_work(bdi->boostQueue,&bdi->boostWorkStruct,2000);
+ }
+
+}
+static void zx234502_charge_typedet(T_TYPE_USB_DETECT chg_type)
+{
+ int ret;
+ #ifdef DBG_CHARGE
+ printk(KERN_INFO"charge type is %d in\n",chg_type);
+ #endif
+ if(TYPE_ADAPTER == chg_type){
+
+ printk(KERN_INFO"chg type is TYPE_ADAPTER\n");
+ /*set the DCIN Current = 1A*/
+ ret = zx234502_write_mask(g_bdi,ZX234502_REG_ISC,
+ ZX234502_REG_ISC_ISET_DCIN_MASK,
+ ZX234502_REG_ISC_ISET_DCIN_SHIFT,
+ 0x3);
+ if (ret < 0){
+ printk(KERN_INFO"write REG_01 fault\n");
+ }
+ g_bdi->charger.type = POWER_SUPPLY_PCAC__AC;
+ }
+
+ else{
+ printk(KERN_INFO"chgage type is TYPE_PC\n");
+
+ /*set the DCIN Current = 450mA*/
+ ret = zx234502_write_mask(g_bdi,ZX234502_REG_ISC,
+ ZX234502_REG_ISC_ISET_DCIN_MASK,
+ ZX234502_REG_ISC_ISET_DCIN_SHIFT,
+ 0x1);
+ if (ret < 0){
+ printk(KERN_INFO"write REG_01 fault\n");
+ }
+
+ g_bdi->charger.type = POWER_SUPPLY_PCAC__PC;
+ }
+
+
+ #ifdef CONFIG_CHARGER_ZX234502_EVB
+ /*set the DCIN Current = 2A*/
+ ret = zx234502_write_mask(g_bdi,ZX234502_REG_ISC,
+ ZX234502_REG_ISC_ISET_DCIN_MASK,
+ ZX234502_REG_ISC_ISET_DCIN_SHIFT,
+ 0x5);
+ if (ret < 0){
+ printk(KERN_INFO"write REG_01 fault\n");
+ }
+ #endif
+
+}
+
+
+#if defined(CONFIG_DEBUG_FS)
+static ssize_t debugfs_regs_write(struct file *file, const char __user *buf,size_t nbytes, loff_t *ppos)
+{
+ unsigned int val1, val2;
+ u8 reg, value;
+ int ret;
+ char *kern_buf;
+ struct seq_file *s = file->private_data;
+ struct zx234502_dev_info *zx234502 = s->private;
+
+ kern_buf = kzalloc(nbytes, GFP_KERNEL);
+
+ if (!kern_buf) {
+ printk(KERN_INFO "zx234502_charger: Failed to allocate buffer\n");
+ return -ENOMEM;
+ }
+
+ if (copy_from_user(kern_buf, (void __user *)buf, nbytes)) {
+ kfree(kern_buf);
+ return -ENOMEM;
+ }
+ printk(KERN_INFO "%s input str=%s,nbytes=%d \n", __func__, kern_buf,nbytes);
+
+ ret = sscanf(kern_buf, "%x:%x", &val1, &val2);
+ if (ret < 2 || val1 > ZX234502_REG_MAX ) {
+ printk(KERN_INFO "zx234502_charger: failed to read user buf, ret=%d, input 0x%x:0x%x\n",
+ ret, val1, val2);
+ kfree(kern_buf);
+ return -EINVAL;
+ }
+ kfree(kern_buf);
+
+ reg = val1 & 0xff;
+ value = val2 & 0xff;
+ printk(KERN_INFO "%s input %x,%x; reg=%x,value=%x\n", __func__, val1, val2, reg, value);
+ ret = zx234502_write(zx234502,reg, value);
+
+ return ret ? ret : nbytes;
+}
+
+static int debugfs_regs_show(struct seq_file *s, void *v)
+{
+ int i;
+ u8 value[ZX234502_REG_MAX];
+ int ret=0;
+ int curr = 0;
+ struct zx234502_dev_info *zx234502 = s->private;
+
+ for (i = 0; i < ZX234502_REG_MAX; i++){
+ ret = zx234502_read(zx234502, i, &(value[i]));
+
+ if(ret){
+ printk(KERN_INFO "%s err=%d, break\n", __func__, ret);
+ seq_printf(s, "%s err=%d, break", __func__, ret);
+ return ret;
+ }
+ }
+
+ for (i = 0; i < ZX234502_REG_MAX; i++) {
+ if((i+1)%9 == 0)
+ seq_printf(s, "\n");
+
+ seq_printf(s, "[0x%x]%02x ", i, value[i]);
+ }
+ /*charger type*/
+ if(zx234502->charger.type ==POWER_SUPPLY_PCAC__PC){
+ seq_printf(s, "charger type is PC\n");
+ }
+ else if(zx234502->charger.type ==POWER_SUPPLY_PCAC__AC){
+ seq_printf(s, "charger type is AC\n");
+ }
+ else
+ seq_printf(s, "charger type is unknow = %d\n",zx234502->charger.type);
+
+ /*stopchg_flag*/
+ if(1==stopchg_flag){
+ seq_printf(s, "mmi set charger enable,the charger state = %d\n",!(value[ZX234502_REG_MS]&ZX234502_REG_MS_INSUS_MASK));
+ }
+ else if(2==stopchg_flag){
+ seq_printf(s, "mmi set charger disable,the charger state = %d\n",!(value[ZX234502_REG_MS]&ZX234502_REG_MS_INSUS_MASK));
+ }
+ else
+ seq_printf(s, "mmi never set the charger ,the charger state = %d\n",!(value[ZX234502_REG_MS]&ZX234502_REG_MS_INSUS_MASK));
+
+ /*charge current*/
+ ret = zx234502_get_field_val(zx234502, ZX234502_REG_ISC,
+ ZX234502_REG_ISC_ISET_DCIN_MASK, ZX234502_REG_ISC_ISET_DCIN_SHIFT,
+ zx234502_in_ilimit_values,
+ ARRAY_SIZE(zx234502_in_ilimit_values), &curr);
+
+ if (ret < 0)
+ return ret;
+ seq_printf(s, "the charger current now = %dmA\n",curr);
+
+
+ return ret;
+}
+
+#define DEBUGFS_FILE_ENTRY(name) \
+static int debugfs_##name##_open(struct inode *inode, struct file *file) \
+{\
+return single_open(file, debugfs_##name##_show, inode->i_private); \
+}\
+\
+static const struct file_operations debugfs_##name##_fops = { \
+.owner= THIS_MODULE, \
+.open= debugfs_##name##_open, \
+.write=debugfs_##name##_write, \
+.read= seq_read, \
+.llseek= seq_lseek, \
+.release= single_release, \
+}
+
+DEBUGFS_FILE_ENTRY(regs);
+
+static struct dentry *g_charger_root;
+
+static void debugfs_charger_init(struct zx234502_dev_info *zx234502)
+{
+ struct dentry *root;
+ struct dentry *node;
+ int i;
+
+ if(!zx234502)
+ return;
+
+ //create root
+ root = debugfs_create_dir("charger_zx29", NULL);
+ if (!root) {
+ dev_err(&zx234502->dev, "debugfs_create_dir err=%d\n", IS_ERR(root));
+ goto err;
+ }
+
+ //print regs;
+ node = debugfs_create_file("regs", S_IRUGO | S_IWUGO, root, zx234502, &debugfs_regs_fops);
+ if (!node){
+ dev_err(&zx234502->dev, "debugfs_create_dir err=%d\n", IS_ERR(node));
+ goto err;
+ }
+
+ g_charger_root = (void *)root;
+ return;
+err:
+ dev_err(&zx234502->dev, "debugfs_charger_init err\n");
+}
+
+#endif
+
+
+static int zx234502_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct device *dev = &client->dev;
+ struct zx234502_platform_data *pdata = client->dev.platform_data;
+ struct zx234502_dev_info *bdi;
+ int ret;
+ int i; /*when err try 3 times*/
+ //use for other
+ //g_platform_data= client->dev.platform_data;
+
+ printk(KERN_INFO "charger probe.\n");
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+ dev_err(dev, "No support for SMBUS_BYTE_DATA\n");
+ return -ENODEV;
+ }
+
+ bdi = devm_kzalloc(dev, sizeof(*bdi), GFP_KERNEL);
+ if (!bdi) {
+ dev_err(dev, "Can't alloc bdi struct\n");
+ return -ENOMEM;
+ }
+ bdi->pdata = pdata;
+ bdi->client = client;
+ bdi->dev = dev;
+ bdi->model = id->driver_data;
+ strncpy(bdi->model_name, id->name, sizeof(bdi->model_name)-1);
+ mutex_init(&bdi->bs_reg_lock);
+ bdi->first_time = true;
+ bdi->charger_health_valid = false;
+ bdi->battery_health_valid = false;
+ bdi->battery_status_valid = false;
+
+ g_bdi = bdi;
+
+ i2c_set_clientdata(client, bdi);
+
+ if (dev->of_node)
+ ret = 0;//zx234502_setup_dt(bdi);
+ else
+ ret = zx234502_setup_pdata(bdi, pdata);
+
+ if (ret) {
+ dev_err(dev, "Can't get irq info\n");
+ return -EINVAL;
+ }
+#ifdef DBG_CHARGE
+ printk(KERN_INFO "hwinit.\n");
+#endif
+ //pm_runtime_enable(dev);
+ //pm_runtime_resume(dev);
+ i = 0;
+ do{
+ ret = zx234502_hw_init(bdi);
+ if (ret < 0) {
+ printk(KERN_INFO "zx234502_probe Hardware init failed times = %d\n",(i+1));
+ i++;
+ }
+ else
+ break;
+
+ }while(i<3);
+
+#ifdef DBG_CHARGE
+ printk(KERN_INFO "zx234502_probe zx234502_hw_init ok.\n");
+#endif
+#ifdef CONFIG_CHARGER_ZX234502_EVB
+ /*set the DCIN Current = 2A*/
+ ret = zx234502_write_mask(g_bdi,ZX234502_REG_ISC,
+ ZX234502_REG_ISC_ISET_DCIN_MASK,
+ ZX234502_REG_ISC_ISET_DCIN_SHIFT,
+ 0x5);
+ if (ret < 0){
+ printk(KERN_INFO"write REG_01 fault\n");
+ }
+#endif
+ ret = zx234502_charger_config_groupB_Regs(bdi);
+ if (ret < 0) {
+ printk(KERN_INFO "groupB config faild.\n");
+ }
+
+ zx234502_charger_init(&bdi->charger);
+
+ ret = power_supply_register(dev, &bdi->charger);
+ if (ret) {
+ dev_err(dev, "Can't register charger\n");
+ goto out2;
+ }
+ printk(KERN_INFO "zx234502_probe power_supply_register charger ok.\n");
+
+ zx234502_battery_init(&bdi->battery);
+
+ ret = power_supply_register(dev, &bdi->battery);
+ if (ret) {
+ dev_err(dev, "Can't register battery\n");
+ goto out3;
+ }
+ printk(KERN_INFO "zx234502_probe power_supply_register battery ok.\n");
+
+ if(true == pdata->boost_flag){
+ zx234502_boost_init(&bdi->boost);
+ ret = power_supply_register(dev, &bdi->boost);
+ if (ret) {
+ dev_err(dev, "Can't register boost\n");
+ goto out4;
+ }
+
+ ret = zx234502_boost_gpio_init(dev,pdata);
+ if (ret) {
+ dev_err(dev, "Can't register boost\n");
+ goto out4;
+ }
+ #ifdef DBG_CHARGE
+ printk(KERN_INFO "zx234502_boost_gpio_init.\n");
+ #endif
+
+ bdi->boostQueue = create_workqueue("zx234502boost");
+ if (!bdi->boostQueue){
+ if(bdi->pdata->boost_cur_gpio1)
+ gpio_free(bdi->pdata->boost_cur_gpio1);
+ if(bdi->pdata->boost_cur_gpio2)
+ gpio_free(bdi->pdata->boost_cur_gpio2);
+ if(bdi->pdata->boost_cur_gpio3)
+ gpio_free(bdi->pdata->boost_cur_gpio3);
+ if(bdi->pdata->boost_loadswitch_gpio)
+ gpio_free(bdi->pdata->boost_loadswitch_gpio);
+
+ ret = -1;
+ goto out4;
+ }
+
+ INIT_DELAYED_WORK(&bdi->boostWorkStruct,zx234502_boost_workstruct_callback);
+
+ //queue_delayed_work(bdi->boostQueue,&bdi->boostWorkStruct,20000);
+ #ifdef DBG_CHARGE
+ printk(KERN_INFO "setup_workqueue.\n");
+ #endif
+ }
+#if 0
+//#ifdef CONFIG_SYSFS
+ ret = zx234502_sysfs_create_group(bdi);
+ if (ret) {
+ dev_err(dev, "Can't create sysfs entries\n");
+ goto out5;
+ }
+#endif
+ dwc_chg_Regcallback(zx234502_charge_typedet);/*register for usb*/
+
+ sema_init(&bdi->chgirq_sem, 0);
+
+ ret = zx234502_init_state(bdi);
+ if(ret)
+ {
+ dev_err(dev, "zx234502 init state error.\n");
+ goto out1;
+ }
+
+ bdi->chg_irq_thread = kthread_run(zx234502_irq_handler_thread, bdi, "zx234502-chgirq");
+ BUG_ON(IS_ERR(bdi->chg_irq_thread));
+
+ ret = request_irq(bdi->irq, zx234502_charger_irq_primary_handler,IRQF_NO_THREAD, "zx234502-charger", bdi);
+ if (ret < 0) {
+ dev_err(dev, "Can't set up irq handler\n");
+ goto out1;
+ }
+ irq_set_irq_wake(bdi->irq, 1);
+
+ /*clear all int*/
+ ret = zx234502_write_mask(bdi,ZX234502_REG_CIIS,ZX234502_REG_CIIS_INT_MASK,ZX234502_REG_CIIS_INT_SHIFT,0x0);
+ if (ret == 0) {
+ printk(KERN_INFO "clear int ok \n");
+ }
+
+
+#if defined(CONFIG_DEBUG_FS)
+ debugfs_charger_init(bdi);
+#endif
+
+#ifdef DBG_CHARGE
+ printk(KERN_INFO "zx234502_probe end.\n");
+#endif
+
+ return 0;
+#if 0
+out5:
+ zx234502_sysfs_remove_group(bdi);
+#endif
+out4:
+ power_supply_unregister(&bdi->boost);
+out3:
+ power_supply_unregister(&bdi->battery);
+out2:
+ //pm_runtime_disable(dev);
+ power_supply_unregister(&bdi->charger);
+out1:
+ if (bdi->gpio_int)
+ gpio_free(bdi->gpio_int);
+ dwc_chg_Regcallback(NULL);/*unregister for usb*/
+
+ return ret;
+}
+
+static int zx234502_remove(struct i2c_client *client)
+{
+ struct zx234502_dev_info *bdi = i2c_get_clientdata(client);
+ struct zx234502_platform_data *pdata = client->dev.platform_data;
+
+ if(!bdi)
+ return -EINVAL;
+
+ //pm_runtime_get_sync(bdi->dev);
+ zx234502_register_reset(bdi);
+ //pm_runtime_put_sync(bdi->dev);
+
+ zx234502_sysfs_remove_group(bdi);
+ power_supply_unregister(&bdi->battery);
+ power_supply_unregister(&bdi->charger);
+ if(true == pdata->boost_flag)
+ power_supply_unregister(&bdi->boost);
+ pm_runtime_disable(bdi->dev);
+
+ if (bdi->gpio_int)
+ gpio_free(bdi->gpio_int);
+ zx234502_boost_gpio_uninit(pdata);
+
+ if(bdi->boostQueue)
+ destroy_workqueue(bdi->boostQueue);
+
+#if defined(CONFIG_DEBUG_FS)
+ if(g_charger_root){
+ printk(KERN_INFO "zx234502_device_exit:debugfs_remove_recursive \n");
+ debugfs_remove_recursive(g_charger_root);
+ }
+#endif
+
+ return 0;
+}
+
+static int zx234502_suspend(struct i2c_client *not_use, pm_message_t mesg)
+{
+
+ disable_irq_nosync(g_bdi->irq);
+ return 0;
+
+}
+
+static int zx234502_resume(struct i2c_client *not_use)
+{
+
+ enable_irq(g_bdi->irq);
+ return 0;
+
+}
+/*
+ * Only support the zx234502 right now. The bq24192, bq24192i, and bq24193
+ * are similar but not identical so the driver needs to be extended to
+ * support them.
+ */
+static const struct i2c_device_id zx234502_i2c_ids[] = {
+ { "zx234502-charger", ZX234502_REG_VERS },
+ { },
+};
+
+static struct i2c_driver zx234502_driver = {
+ .probe = zx234502_probe,
+ .remove = zx234502_remove,
+ .id_table = zx234502_i2c_ids,
+ .driver = {
+ .name = "zx234502-charger",
+ .owner = THIS_MODULE,
+ },
+ .suspend = zx234502_suspend,
+ .resume = zx234502_resume,
+};
+static int __init zx234502_i2c_init(void)
+{
+ int ret;
+
+ ret = i2c_add_driver(&zx234502_driver);
+ if (ret != 0)
+ pr_err("Failed to register visionox_i2c_driver : %d\n", ret);
+
+ return ret;
+}
+/* init early so consumer devices can complete system boot */
+module_init(zx234502_i2c_init);
+
+static void __exit zx234502_i2c_exit(void)
+{
+ i2c_del_driver(&zx234502_driver);
+}
+module_exit(zx234502_i2c_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mark A. Greer <mgreer@animalcreek.com>");
+MODULE_ALIAS("i2c:zx234502-charger");
+MODULE_DESCRIPTION("TI ZX234502 Charger Driver");