// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) ST-Ericsson SA 2010
*
* 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
* @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 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(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(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 const 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",
.of_match = of_match_ptr("ab8500_ext1"),
.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",
.of_match = of_match_ptr("ab8500_ext2"),
.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",
.of_match = of_match_ptr("ab8500_ext3"),
.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 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 regulator_config config = { };
struct regulator_dev *rdev;
int i;
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.init_data = &pdata->ext_regulator[i];
/* register regulator with framework */
rdev = devm_regulator_register(&pdev->dev, &info->desc,
&config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "failed to register regulator %s\n",
info->desc.name);
return PTR_ERR(rdev);
}
dev_dbg(&pdev->dev, "%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");
