zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
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");