| /* |
| * Copyright (C) ST-Ericsson SA 2010 |
| * |
| * License Terms: GNU General Public License v2 |
| * |
| * Authors: Bengt Jonsson <bengt.g.jonsson@stericsson.com> |
| * |
| * This file is based on drivers/regulator/ab8500.c |
| * |
| * AB8500 external regulators |
| * |
| * ab8500-ext supports the following regulators: |
| * - VextSupply3 |
| */ |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/err.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/platform_device.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/mfd/abx500.h> |
| #include <linux/mfd/abx500/ab8500.h> |
| #include <linux/regulator/ab8500.h> |
| |
| static struct regulator_consumer_supply ab8500_vaux1_consumers[] = { |
| /* Main display, u8500 R3 uib */ |
| REGULATOR_SUPPLY("vddi", "mcde_disp_sony_acx424akp.0"), |
| /* Main display, u8500 uib and ST uib */ |
| REGULATOR_SUPPLY("vdd1", "samsung_s6d16d0.0"), |
| /* Secondary display, ST uib */ |
| REGULATOR_SUPPLY("vdd1", "samsung_s6d16d0.1"), |
| /* SFH7741 proximity sensor */ |
| REGULATOR_SUPPLY("vcc", "gpio-keys.0"), |
| /* BH1780GLS ambient light sensor */ |
| REGULATOR_SUPPLY("vcc", "2-0029"), |
| /* lsm303dlh accelerometer */ |
| REGULATOR_SUPPLY("vdd", "2-0018"), |
| /* lsm303dlhc accelerometer */ |
| REGULATOR_SUPPLY("vdd", "2-0019"), |
| /* lsm303dlh magnetometer */ |
| REGULATOR_SUPPLY("vdd", "2-001e"), |
| /* Rohm BU21013 Touchscreen devices */ |
| REGULATOR_SUPPLY("avdd", "3-005c"), |
| REGULATOR_SUPPLY("avdd", "3-005d"), |
| /* Synaptics RMI4 Touchscreen device */ |
| REGULATOR_SUPPLY("vdd", "3-004b"), |
| /* L3G4200D Gyroscope device */ |
| REGULATOR_SUPPLY("vdd", "2-0068"), |
| /* Ambient light sensor device */ |
| REGULATOR_SUPPLY("vdd", "3-0029"), |
| /* Pressure sensor device */ |
| REGULATOR_SUPPLY("vdd", "2-005c"), |
| /* Cypress TrueTouch Touchscreen device */ |
| REGULATOR_SUPPLY("vcpin", "spi8.0"), |
| /* Camera device */ |
| REGULATOR_SUPPLY("vaux12v5", "mmio_camera"), |
| }; |
| |
| static struct regulator_consumer_supply ab8500_vaux2_consumers[] = { |
| /* On-board eMMC power */ |
| REGULATOR_SUPPLY("vmmc", "sdi4"), |
| /* AB8500 audio codec */ |
| REGULATOR_SUPPLY("vcc-N2158", "ab8500-codec.0"), |
| /* AB8500 accessory detect 1 */ |
| REGULATOR_SUPPLY("vcc-N2158", "ab8500-acc-det.0"), |
| /* AB8500 Tv-out device */ |
| REGULATOR_SUPPLY("vcc-N2158", "mcde_tv_ab8500.4"), |
| /* AV8100 HDMI device */ |
| REGULATOR_SUPPLY("vcc-N2158", "av8100_hdmi.3"), |
| }; |
| |
| static struct regulator_consumer_supply ab8500_vaux3_consumers[] = { |
| REGULATOR_SUPPLY("v-SD-STM", "stm"), |
| /* External MMC slot power */ |
| REGULATOR_SUPPLY("vmmc", "sdi0"), |
| }; |
| |
| static struct regulator_consumer_supply ab8500_vtvout_consumers[] = { |
| /* TV-out DENC supply */ |
| REGULATOR_SUPPLY("vtvout", "ab8500-denc.0"), |
| /* Internal general-purpose ADC */ |
| REGULATOR_SUPPLY("vddadc", "ab8500-gpadc.0"), |
| /* ADC for charger */ |
| REGULATOR_SUPPLY("vddadc", "ab8500-charger.0"), |
| /* AB8500 Tv-out device */ |
| REGULATOR_SUPPLY("vtvout", "mcde_tv_ab8500.4"), |
| }; |
| |
| static struct regulator_consumer_supply ab8500_vaud_consumers[] = { |
| /* AB8500 audio-codec main supply */ |
| REGULATOR_SUPPLY("vaud", "ab8500-codec.0"), |
| }; |
| |
| static struct regulator_consumer_supply ab8500_vamic1_consumers[] = { |
| /* AB8500 audio-codec Mic1 supply */ |
| REGULATOR_SUPPLY("vamic1", "ab8500-codec.0"), |
| }; |
| |
| static struct regulator_consumer_supply ab8500_vamic2_consumers[] = { |
| /* AB8500 audio-codec Mic2 supply */ |
| REGULATOR_SUPPLY("vamic2", "ab8500-codec.0"), |
| }; |
| |
| static struct regulator_consumer_supply ab8500_vdmic_consumers[] = { |
| /* AB8500 audio-codec DMic supply */ |
| REGULATOR_SUPPLY("vdmic", "ab8500-codec.0"), |
| }; |
| |
| static struct regulator_consumer_supply ab8500_vintcore_consumers[] = { |
| /* SoC core supply, no device */ |
| REGULATOR_SUPPLY("v-intcore", NULL), |
| /* USB Transceiver */ |
| REGULATOR_SUPPLY("vddulpivio18", "ab8500-usb.0"), |
| /* Handled by abx500 clk driver */ |
| REGULATOR_SUPPLY("v-intcore", "abx500-clk.0"), |
| }; |
| |
| static struct regulator_consumer_supply ab8500_vana_consumers[] = { |
| /* DB8500 DSI */ |
| REGULATOR_SUPPLY("vdddsi1v2", "mcde"), |
| REGULATOR_SUPPLY("vdddsi1v2", "b2r2_core"), |
| REGULATOR_SUPPLY("vdddsi1v2", "b2r2_1_core"), |
| REGULATOR_SUPPLY("vdddsi1v2", "dsilink.0"), |
| REGULATOR_SUPPLY("vdddsi1v2", "dsilink.1"), |
| REGULATOR_SUPPLY("vdddsi1v2", "dsilink.2"), |
| /* DB8500 CSI */ |
| REGULATOR_SUPPLY("vddcsi1v2", "mmio_camera"), |
| }; |
| |
| /* ab8500 regulator register initialization */ |
| static struct ab8500_regulator_reg_init ab8500_reg_init[] = { |
| /* |
| * VanaRequestCtrl = HP/LP depending on VxRequest |
| * VextSupply1RequestCtrl = HP/LP depending on VxRequest |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL2, 0xf0, 0x00), |
| /* |
| * VextSupply2RequestCtrl = HP/LP depending on VxRequest |
| * VextSupply3RequestCtrl = HP/LP depending on VxRequest |
| * Vaux1RequestCtrl = HP/LP depending on VxRequest |
| * Vaux2RequestCtrl = HP/LP depending on VxRequest |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL3, 0xff, 0x00), |
| /* |
| * Vaux3RequestCtrl = HP/LP depending on VxRequest |
| * SwHPReq = Control through SWValid disabled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL4, 0x07, 0x00), |
| /* |
| * VanaSysClkReq1HPValid = disabled |
| * Vaux1SysClkReq1HPValid = disabled |
| * Vaux2SysClkReq1HPValid = disabled |
| * Vaux3SysClkReq1HPValid = disabled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID1, 0xe8, 0x00), |
| /* |
| * VextSupply1SysClkReq1HPValid = disabled |
| * VextSupply2SysClkReq1HPValid = disabled |
| * VextSupply3SysClkReq1HPValid = SysClkReq1 controlled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID2, 0x70, 0x40), |
| /* |
| * VanaHwHPReq1Valid = disabled |
| * Vaux1HwHPreq1Valid = disabled |
| * Vaux2HwHPReq1Valid = disabled |
| * Vaux3HwHPReqValid = disabled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID1, 0xe8, 0x00), |
| /* |
| * VextSupply1HwHPReq1Valid = disabled |
| * VextSupply2HwHPReq1Valid = disabled |
| * VextSupply3HwHPReq1Valid = disabled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID2, 0x07, 0x00), |
| /* |
| * VanaHwHPReq2Valid = disabled |
| * Vaux1HwHPReq2Valid = disabled |
| * Vaux2HwHPReq2Valid = disabled |
| * Vaux3HwHPReq2Valid = disabled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID1, 0xe8, 0x00), |
| /* |
| * VextSupply1HwHPReq2Valid = disabled |
| * VextSupply2HwHPReq2Valid = disabled |
| * VextSupply3HwHPReq2Valid = HWReq2 controlled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID2, 0x07, 0x04), |
| /* |
| * VanaSwHPReqValid = disabled |
| * Vaux1SwHPReqValid = disabled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID1, 0xa0, 0x00), |
| /* |
| * Vaux2SwHPReqValid = disabled |
| * Vaux3SwHPReqValid = disabled |
| * VextSupply1SwHPReqValid = disabled |
| * VextSupply2SwHPReqValid = disabled |
| * VextSupply3SwHPReqValid = disabled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID2, 0x1f, 0x00), |
| /* |
| * SysClkReq2Valid1 = SysClkReq2 controlled |
| * SysClkReq3Valid1 = disabled |
| * SysClkReq4Valid1 = SysClkReq4 controlled |
| * SysClkReq5Valid1 = disabled |
| * SysClkReq6Valid1 = SysClkReq6 controlled |
| * SysClkReq7Valid1 = disabled |
| * SysClkReq8Valid1 = disabled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID1, 0xfe, 0x2a), |
| /* |
| * SysClkReq2Valid2 = disabled |
| * SysClkReq3Valid2 = disabled |
| * SysClkReq4Valid2 = disabled |
| * SysClkReq5Valid2 = disabled |
| * SysClkReq6Valid2 = SysClkReq6 controlled |
| * SysClkReq7Valid2 = disabled |
| * SysClkReq8Valid2 = disabled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID2, 0xfe, 0x20), |
| /* |
| * VTVoutEna = disabled |
| * Vintcore12Ena = disabled |
| * Vintcore12Sel = 1.25 V |
| * Vintcore12LP = inactive (HP) |
| * VTVoutLP = inactive (HP) |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUMISC1, 0xfe, 0x10), |
| /* |
| * VaudioEna = disabled |
| * VdmicEna = disabled |
| * Vamic1Ena = disabled |
| * Vamic2Ena = disabled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_VAUDIOSUPPLY, 0x1e, 0x00), |
| /* |
| * Vamic1_dzout = high-Z when Vamic1 is disabled |
| * Vamic2_dzout = high-Z when Vamic2 is disabled |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUCTRL1VAMIC, 0x03, 0x00), |
| /* |
| * VPll = Hw controlled (NOTE! PRCMU bits) |
| * VanaRegu = force off |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_VPLLVANAREGU, 0x0f, 0x02), |
| /* |
| * VrefDDREna = disabled |
| * VrefDDRSleepMode = inactive (no pulldown) |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_VREFDDR, 0x03, 0x00), |
| /* |
| * VextSupply1Regu = force LP |
| * VextSupply2Regu = force OFF |
| * VextSupply3Regu = force HP (-> STBB2=LP and TPS=LP) |
| * ExtSupply2Bypass = ExtSupply12LPn ball is 0 when Ena is 0 |
| * ExtSupply3Bypass = ExtSupply3LPn ball is 0 when Ena is 0 |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_EXTSUPPLYREGU, 0xff, 0x13), |
| /* |
| * Vaux1Regu = force HP |
| * Vaux2Regu = force off |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_VAUX12REGU, 0x0f, 0x01), |
| /* |
| * Vaux3Regu = force off |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3REGU, 0x03, 0x00), |
| /* |
| * Vaux1Sel = 2.8 V |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_VAUX1SEL, 0x0f, 0x0C), |
| /* |
| * Vaux2Sel = 2.9 V |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_VAUX2SEL, 0x0f, 0x0d), |
| /* |
| * Vaux3Sel = 2.91 V |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3SEL, 0x07, 0x07), |
| /* |
| * VextSupply12LP = disabled (no LP) |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUCTRL2SPARE, 0x01, 0x00), |
| /* |
| * Vaux1Disch = short discharge time |
| * Vaux2Disch = short discharge time |
| * Vaux3Disch = short discharge time |
| * Vintcore12Disch = short discharge time |
| * VTVoutDisch = short discharge time |
| * VaudioDisch = short discharge time |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH, 0xfc, 0x00), |
| /* |
| * VanaDisch = short discharge time |
| * VdmicPullDownEna = pulldown disabled when Vdmic is disabled |
| * VdmicDisch = short discharge time |
| */ |
| INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH2, 0x16, 0x00), |
| }; |
| |
| /* AB8500 regulators */ |
| static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = { |
| /* supplies to the display/camera */ |
| [AB8500_LDO_AUX1] = { |
| .supply_regulator = "ab8500-ext-supply3", |
| .constraints = { |
| .name = "V-DISPLAY", |
| .min_uV = 2800000, |
| .max_uV = 3300000, |
| .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | |
| REGULATOR_CHANGE_STATUS, |
| .boot_on = 1, /* display is on at boot */ |
| }, |
| .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux1_consumers), |
| .consumer_supplies = ab8500_vaux1_consumers, |
| }, |
| /* supplies to the on-board eMMC */ |
| [AB8500_LDO_AUX2] = { |
| .supply_regulator = "ab8500-ext-supply3", |
| .constraints = { |
| .name = "V-eMMC1", |
| .min_uV = 1100000, |
| .max_uV = 3300000, |
| .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | |
| REGULATOR_CHANGE_STATUS | |
| REGULATOR_CHANGE_MODE, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL | |
| REGULATOR_MODE_IDLE, |
| }, |
| .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux2_consumers), |
| .consumer_supplies = ab8500_vaux2_consumers, |
| }, |
| /* supply for VAUX3, supplies to SDcard slots */ |
| [AB8500_LDO_AUX3] = { |
| .supply_regulator = "ab8500-ext-supply3", |
| .constraints = { |
| .name = "V-MMC-SD", |
| .min_uV = 1100000, |
| .max_uV = 3300000, |
| .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | |
| REGULATOR_CHANGE_STATUS | |
| REGULATOR_CHANGE_MODE, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL | |
| REGULATOR_MODE_IDLE, |
| }, |
| .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux3_consumers), |
| .consumer_supplies = ab8500_vaux3_consumers, |
| }, |
| /* supply for tvout, gpadc, TVOUT LDO */ |
| [AB8500_LDO_TVOUT] = { |
| .constraints = { |
| .name = "V-TVOUT", |
| .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
| }, |
| .num_consumer_supplies = ARRAY_SIZE(ab8500_vtvout_consumers), |
| .consumer_supplies = ab8500_vtvout_consumers, |
| }, |
| /* supply for ab8500-vaudio, VAUDIO LDO */ |
| [AB8500_LDO_AUDIO] = { |
| .constraints = { |
| .name = "V-AUD", |
| .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
| }, |
| .num_consumer_supplies = ARRAY_SIZE(ab8500_vaud_consumers), |
| .consumer_supplies = ab8500_vaud_consumers, |
| }, |
| /* supply for v-anamic1 VAMic1-LDO */ |
| [AB8500_LDO_ANAMIC1] = { |
| .constraints = { |
| .name = "V-AMIC1", |
| .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
| }, |
| .num_consumer_supplies = ARRAY_SIZE(ab8500_vamic1_consumers), |
| .consumer_supplies = ab8500_vamic1_consumers, |
| }, |
| /* supply for v-amic2, VAMIC2 LDO, reuse constants for AMIC1 */ |
| [AB8500_LDO_ANAMIC2] = { |
| .constraints = { |
| .name = "V-AMIC2", |
| .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
| }, |
| .num_consumer_supplies = ARRAY_SIZE(ab8500_vamic2_consumers), |
| .consumer_supplies = ab8500_vamic2_consumers, |
| }, |
| /* supply for v-dmic, VDMIC LDO */ |
| [AB8500_LDO_DMIC] = { |
| .constraints = { |
| .name = "V-DMIC", |
| .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
| }, |
| .num_consumer_supplies = ARRAY_SIZE(ab8500_vdmic_consumers), |
| .consumer_supplies = ab8500_vdmic_consumers, |
| }, |
| /* supply for v-intcore12, VINTCORE12 LDO */ |
| [AB8500_LDO_INTCORE] = { |
| .constraints = { |
| .name = "V-INTCORE", |
| .min_uV = 1250000, |
| .max_uV = 1350000, |
| .input_uV = 1800000, |
| .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | |
| REGULATOR_CHANGE_STATUS | |
| REGULATOR_CHANGE_MODE | |
| REGULATOR_CHANGE_DRMS, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL | |
| REGULATOR_MODE_IDLE, |
| }, |
| .num_consumer_supplies = ARRAY_SIZE(ab8500_vintcore_consumers), |
| .consumer_supplies = ab8500_vintcore_consumers, |
| }, |
| /* supply for U8500 CSI-DSI, VANA LDO */ |
| [AB8500_LDO_ANA] = { |
| .constraints = { |
| .name = "V-CSI-DSI", |
| .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
| }, |
| .num_consumer_supplies = ARRAY_SIZE(ab8500_vana_consumers), |
| .consumer_supplies = ab8500_vana_consumers, |
| }, |
| }; |
| |
| /* supply for VextSupply3 */ |
| static struct regulator_consumer_supply ab8500_ext_supply3_consumers[] = { |
| /* SIM supply for 3 V SIM cards */ |
| REGULATOR_SUPPLY("vinvsim", "sim-detect.0"), |
| }; |
| |
| /* |
| * AB8500 external regulators |
| */ |
| static struct regulator_init_data ab8500_ext_regulators[] = { |
| /* fixed Vbat supplies VSMPS1_EXT_1V8 */ |
| [AB8500_EXT_SUPPLY1] = { |
| .constraints = { |
| .name = "ab8500-ext-supply1", |
| .min_uV = 1800000, |
| .max_uV = 1800000, |
| .initial_mode = REGULATOR_MODE_IDLE, |
| .boot_on = 1, |
| .always_on = 1, |
| }, |
| }, |
| /* fixed Vbat supplies VSMPS2_EXT_1V36 and VSMPS5_EXT_1V15 */ |
| [AB8500_EXT_SUPPLY2] = { |
| .constraints = { |
| .name = "ab8500-ext-supply2", |
| .min_uV = 1360000, |
| .max_uV = 1360000, |
| }, |
| }, |
| /* fixed Vbat supplies VSMPS3_EXT_3V4 and VSMPS4_EXT_3V4 */ |
| [AB8500_EXT_SUPPLY3] = { |
| .constraints = { |
| .name = "ab8500-ext-supply3", |
| .min_uV = 3400000, |
| .max_uV = 3400000, |
| .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
| .boot_on = 1, |
| }, |
| .num_consumer_supplies = |
| ARRAY_SIZE(ab8500_ext_supply3_consumers), |
| .consumer_supplies = ab8500_ext_supply3_consumers, |
| }, |
| }; |
| |
| static struct ab8500_regulator_platform_data ab8500_regulator_plat_data = { |
| .reg_init = ab8500_reg_init, |
| .num_reg_init = ARRAY_SIZE(ab8500_reg_init), |
| .regulator = ab8500_regulators, |
| .num_regulator = ARRAY_SIZE(ab8500_regulators), |
| .ext_regulator = ab8500_ext_regulators, |
| .num_ext_regulator = ARRAY_SIZE(ab8500_ext_regulators), |
| }; |
| |
| /** |
| * struct ab8500_ext_regulator_info - ab8500 regulator information |
| * @dev: device pointer |
| * @desc: regulator description |
| * @rdev: regulator device |
| * @cfg: regulator configuration (extension of regulator FW configuration) |
| * @update_bank: bank to control on/off |
| * @update_reg: register to control on/off |
| * @update_mask: mask to enable/disable and set mode of regulator |
| * @update_val: bits holding the regulator current mode |
| * @update_val_hp: bits to set EN pin active (LPn pin deactive) |
| * normally this means high power mode |
| * @update_val_lp: bits to set EN pin active and LPn pin active |
| * normally this means low power mode |
| * @update_val_hw: bits to set regulator pins in HW control |
| * SysClkReq pins and logic will choose mode |
| */ |
| struct ab8500_ext_regulator_info { |
| struct device *dev; |
| struct regulator_desc desc; |
| struct regulator_dev *rdev; |
| struct ab8500_ext_regulator_cfg *cfg; |
| u8 update_bank; |
| u8 update_reg; |
| u8 update_mask; |
| u8 update_val; |
| u8 update_val_hp; |
| u8 update_val_lp; |
| u8 update_val_hw; |
| }; |
| |
| static int ab8500_ext_regulator_enable(struct regulator_dev *rdev) |
| { |
| int ret; |
| struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev); |
| u8 regval; |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| /* |
| * To satisfy both HW high power request and SW request, the regulator |
| * must be on in high power. |
| */ |
| if (info->cfg && info->cfg->hwreq) |
| regval = info->update_val_hp; |
| else |
| regval = info->update_val; |
| |
| ret = abx500_mask_and_set_register_interruptible(info->dev, |
| info->update_bank, info->update_reg, |
| info->update_mask, regval); |
| if (ret < 0) { |
| dev_err(rdev_get_dev(info->rdev), |
| "couldn't set enable bits for regulator\n"); |
| return ret; |
| } |
| |
| dev_dbg(rdev_get_dev(rdev), |
| "%s-enable (bank, reg, mask, value): 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", |
| info->desc.name, info->update_bank, info->update_reg, |
| info->update_mask, regval); |
| |
| return 0; |
| } |
| |
| static int ab8500_ext_regulator_disable(struct regulator_dev *rdev) |
| { |
| int ret; |
| struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev); |
| u8 regval; |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| /* |
| * Set the regulator in HW request mode if configured |
| */ |
| if (info->cfg && info->cfg->hwreq) |
| regval = info->update_val_hw; |
| else |
| regval = 0; |
| |
| ret = abx500_mask_and_set_register_interruptible(info->dev, |
| info->update_bank, info->update_reg, |
| info->update_mask, regval); |
| if (ret < 0) { |
| dev_err(rdev_get_dev(info->rdev), |
| "couldn't set disable bits for regulator\n"); |
| return ret; |
| } |
| |
| dev_dbg(rdev_get_dev(rdev), "%s-disable (bank, reg, mask, value):" |
| " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", |
| info->desc.name, info->update_bank, info->update_reg, |
| info->update_mask, regval); |
| |
| return 0; |
| } |
| |
| static int ab8500_ext_regulator_is_enabled(struct regulator_dev *rdev) |
| { |
| int ret; |
| struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev); |
| u8 regval; |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| ret = abx500_get_register_interruptible(info->dev, |
| info->update_bank, info->update_reg, ®val); |
| if (ret < 0) { |
| dev_err(rdev_get_dev(rdev), |
| "couldn't read 0x%x register\n", info->update_reg); |
| return ret; |
| } |
| |
| dev_dbg(rdev_get_dev(rdev), "%s-is_enabled (bank, reg, mask, value):" |
| " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", |
| info->desc.name, info->update_bank, info->update_reg, |
| info->update_mask, regval); |
| |
| if (((regval & info->update_mask) == info->update_val_lp) || |
| ((regval & info->update_mask) == info->update_val_hp)) |
| return 1; |
| else |
| return 0; |
| } |
| |
| static int ab8500_ext_regulator_set_mode(struct regulator_dev *rdev, |
| unsigned int mode) |
| { |
| int ret = 0; |
| struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev); |
| u8 regval; |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| switch (mode) { |
| case REGULATOR_MODE_NORMAL: |
| regval = info->update_val_hp; |
| break; |
| case REGULATOR_MODE_IDLE: |
| regval = info->update_val_lp; |
| break; |
| |
| default: |
| return -EINVAL; |
| } |
| |
| /* If regulator is enabled and info->cfg->hwreq is set, the regulator |
| must be on in high power, so we don't need to write the register with |
| the same value. |
| */ |
| if (ab8500_ext_regulator_is_enabled(rdev) && |
| !(info->cfg && info->cfg->hwreq)) { |
| ret = abx500_mask_and_set_register_interruptible(info->dev, |
| info->update_bank, info->update_reg, |
| info->update_mask, regval); |
| if (ret < 0) { |
| dev_err(rdev_get_dev(rdev), |
| "Could not set regulator mode.\n"); |
| return ret; |
| } |
| |
| dev_dbg(rdev_get_dev(rdev), |
| "%s-set_mode (bank, reg, mask, value): " |
| "0x%x, 0x%x, 0x%x, 0x%x\n", |
| info->desc.name, info->update_bank, info->update_reg, |
| info->update_mask, regval); |
| } |
| |
| info->update_val = regval; |
| |
| return 0; |
| } |
| |
| static unsigned int ab8500_ext_regulator_get_mode(struct regulator_dev *rdev) |
| { |
| struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev); |
| int ret; |
| |
| if (info == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
| return -EINVAL; |
| } |
| |
| if (info->update_val == info->update_val_hp) |
| ret = REGULATOR_MODE_NORMAL; |
| else if (info->update_val == info->update_val_lp) |
| ret = REGULATOR_MODE_IDLE; |
| else |
| ret = -EINVAL; |
| |
| return ret; |
| } |
| |
| static int ab8500_ext_set_voltage(struct regulator_dev *rdev, int min_uV, |
| int max_uV, unsigned *selector) |
| { |
| struct regulation_constraints *regu_constraints = rdev->constraints; |
| |
| if (!regu_constraints) { |
| dev_err(rdev_get_dev(rdev), "No regulator constraints\n"); |
| return -EINVAL; |
| } |
| |
| if (regu_constraints->min_uV == min_uV && |
| regu_constraints->max_uV == max_uV) |
| return 0; |
| |
| dev_err(rdev_get_dev(rdev), |
| "Requested min %duV max %duV != constrained min %duV max %duV\n", |
| min_uV, max_uV, |
| regu_constraints->min_uV, regu_constraints->max_uV); |
| |
| return -EINVAL; |
| } |
| |
| static int ab8500_ext_list_voltage(struct regulator_dev *rdev, |
| unsigned selector) |
| { |
| struct regulation_constraints *regu_constraints = rdev->constraints; |
| |
| if (regu_constraints == NULL) { |
| dev_err(rdev_get_dev(rdev), "regulator constraints null pointer\n"); |
| return -EINVAL; |
| } |
| /* return the uV for the fixed regulators */ |
| if (regu_constraints->min_uV && regu_constraints->max_uV) { |
| if (regu_constraints->min_uV == regu_constraints->max_uV) |
| return regu_constraints->min_uV; |
| } |
| return -EINVAL; |
| } |
| |
| static struct regulator_ops ab8500_ext_regulator_ops = { |
| .enable = ab8500_ext_regulator_enable, |
| .disable = ab8500_ext_regulator_disable, |
| .is_enabled = ab8500_ext_regulator_is_enabled, |
| .set_mode = ab8500_ext_regulator_set_mode, |
| .get_mode = ab8500_ext_regulator_get_mode, |
| .set_voltage = ab8500_ext_set_voltage, |
| .list_voltage = ab8500_ext_list_voltage, |
| }; |
| |
| static struct ab8500_ext_regulator_info |
| ab8500_ext_regulator_info[AB8500_NUM_EXT_REGULATORS] = { |
| [AB8500_EXT_SUPPLY1] = { |
| .desc = { |
| .name = "VEXTSUPPLY1", |
| .ops = &ab8500_ext_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_EXT_SUPPLY1, |
| .owner = THIS_MODULE, |
| .n_voltages = 1, |
| }, |
| .update_bank = 0x04, |
| .update_reg = 0x08, |
| .update_mask = 0x03, |
| .update_val = 0x01, |
| .update_val_hp = 0x01, |
| .update_val_lp = 0x03, |
| .update_val_hw = 0x02, |
| }, |
| [AB8500_EXT_SUPPLY2] = { |
| .desc = { |
| .name = "VEXTSUPPLY2", |
| .ops = &ab8500_ext_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_EXT_SUPPLY2, |
| .owner = THIS_MODULE, |
| .n_voltages = 1, |
| }, |
| .update_bank = 0x04, |
| .update_reg = 0x08, |
| .update_mask = 0x0c, |
| .update_val = 0x04, |
| .update_val_hp = 0x04, |
| .update_val_lp = 0x0c, |
| .update_val_hw = 0x08, |
| }, |
| [AB8500_EXT_SUPPLY3] = { |
| .desc = { |
| .name = "VEXTSUPPLY3", |
| .ops = &ab8500_ext_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .id = AB8500_EXT_SUPPLY3, |
| .owner = THIS_MODULE, |
| .n_voltages = 1, |
| }, |
| .update_bank = 0x04, |
| .update_reg = 0x08, |
| .update_mask = 0x30, |
| .update_val = 0x10, |
| .update_val_hp = 0x10, |
| .update_val_lp = 0x30, |
| .update_val_hw = 0x20, |
| }, |
| }; |
| |
| static struct of_regulator_match ab8500_ext_regulator_match[] = { |
| { .name = "ab8500_ext1", .driver_data = (void *) AB8500_EXT_SUPPLY1, }, |
| { .name = "ab8500_ext2", .driver_data = (void *) AB8500_EXT_SUPPLY2, }, |
| { .name = "ab8500_ext3", .driver_data = (void *) AB8500_EXT_SUPPLY3, }, |
| }; |
| |
| static int ab8500_ext_regulator_probe(struct platform_device *pdev) |
| { |
| struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent); |
| struct ab8500_regulator_platform_data *pdata = &ab8500_regulator_plat_data; |
| struct device_node *np = pdev->dev.of_node; |
| struct regulator_config config = { }; |
| int i, err; |
| |
| if (np) { |
| err = of_regulator_match(&pdev->dev, np, |
| ab8500_ext_regulator_match, |
| ARRAY_SIZE(ab8500_ext_regulator_match)); |
| if (err < 0) { |
| dev_err(&pdev->dev, |
| "Error parsing regulator init data: %d\n", err); |
| return err; |
| } |
| } |
| |
| if (!ab8500) { |
| dev_err(&pdev->dev, "null mfd parent\n"); |
| return -EINVAL; |
| } |
| |
| /* make sure the platform data has the correct size */ |
| if (pdata->num_ext_regulator != ARRAY_SIZE(ab8500_ext_regulator_info)) { |
| dev_err(&pdev->dev, "Configuration error: size mismatch.\n"); |
| return -EINVAL; |
| } |
| |
| /* check for AB8500 2.x */ |
| if (is_ab8500_2p0_or_earlier(ab8500)) { |
| struct ab8500_ext_regulator_info *info; |
| |
| /* VextSupply3LPn is inverted on AB8500 2.x */ |
| info = &ab8500_ext_regulator_info[AB8500_EXT_SUPPLY3]; |
| info->update_val = 0x30; |
| info->update_val_hp = 0x30; |
| info->update_val_lp = 0x10; |
| } |
| |
| /* register all regulators */ |
| for (i = 0; i < ARRAY_SIZE(ab8500_ext_regulator_info); i++) { |
| struct ab8500_ext_regulator_info *info = NULL; |
| |
| /* assign per-regulator data */ |
| info = &ab8500_ext_regulator_info[i]; |
| info->dev = &pdev->dev; |
| info->cfg = (struct ab8500_ext_regulator_cfg *) |
| pdata->ext_regulator[i].driver_data; |
| |
| config.dev = &pdev->dev; |
| config.driver_data = info; |
| config.of_node = ab8500_ext_regulator_match[i].of_node; |
| config.init_data = (np) ? |
| ab8500_ext_regulator_match[i].init_data : |
| &pdata->ext_regulator[i]; |
| |
| /* register regulator with framework */ |
| info->rdev = devm_regulator_register(&pdev->dev, &info->desc, |
| &config); |
| if (IS_ERR(info->rdev)) { |
| err = PTR_ERR(info->rdev); |
| dev_err(&pdev->dev, "failed to register regulator %s\n", |
| info->desc.name); |
| return err; |
| } |
| |
| dev_dbg(rdev_get_dev(info->rdev), |
| "%s-probed\n", info->desc.name); |
| } |
| |
| return 0; |
| } |
| |
| static struct platform_driver ab8500_ext_regulator_driver = { |
| .probe = ab8500_ext_regulator_probe, |
| .driver = { |
| .name = "ab8500-ext-regulator", |
| }, |
| }; |
| |
| static int __init ab8500_ext_regulator_init(void) |
| { |
| int ret; |
| |
| ret = platform_driver_register(&ab8500_ext_regulator_driver); |
| if (ret) |
| pr_err("Failed to register ab8500 ext regulator: %d\n", ret); |
| |
| return ret; |
| } |
| subsys_initcall(ab8500_ext_regulator_init); |
| |
| static void __exit ab8500_ext_regulator_exit(void) |
| { |
| platform_driver_unregister(&ab8500_ext_regulator_driver); |
| } |
| module_exit(ab8500_ext_regulator_exit); |
| |
| MODULE_LICENSE("GPL v2"); |
| MODULE_AUTHOR("Bengt Jonsson <bengt.g.jonsson@stericsson.com>"); |
| MODULE_DESCRIPTION("AB8500 external regulator driver"); |
| MODULE_ALIAS("platform:ab8500-ext-regulator"); |