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linux/drivers/regulator/tps80031-regulator.c

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/*
* tps80031-regulator.c -- TI TPS80031 regulator driver.
*
* Regulator driver for TI TPS80031/TPS80032 Fully Integrated Power
* Management with Power Path and Battery Charger.
*
* Copyright (c) 2012, NVIDIA Corporation.
*
* Author: Laxman Dewangan <ldewangan@nvidia.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 version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
* whether express or implied; 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/delay.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mfd/tps80031.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/slab.h>
/* Flags for DCDC Voltage reading */
#define DCDC_OFFSET_EN BIT(0)
#define DCDC_EXTENDED_EN BIT(1)
#define TRACK_MODE_ENABLE BIT(2)
#define SMPS_MULTOFFSET_VIO BIT(1)
#define SMPS_MULTOFFSET_SMPS1 BIT(3)
#define SMPS_MULTOFFSET_SMPS2 BIT(4)
#define SMPS_MULTOFFSET_SMPS3 BIT(6)
#define SMPS_MULTOFFSET_SMPS4 BIT(0)
#define SMPS_CMD_MASK 0xC0
#define SMPS_VSEL_MASK 0x3F
#define LDO_VSEL_MASK 0x1F
#define LDO_TRACK_VSEL_MASK 0x3F
#define MISC2_LDOUSB_IN_VSYS BIT(4)
#define MISC2_LDOUSB_IN_PMID BIT(3)
#define MISC2_LDOUSB_IN_MASK 0x18
#define MISC2_LDO3_SEL_VIB_VAL BIT(0)
#define MISC2_LDO3_SEL_VIB_MASK 0x1
#define BOOST_HW_PWR_EN BIT(5)
#define BOOST_HW_PWR_EN_MASK BIT(5)
#define OPA_MODE_EN BIT(6)
#define OPA_MODE_EN_MASK BIT(6)
#define USB_VBUS_CTRL_SET 0x04
#define USB_VBUS_CTRL_CLR 0x05
#define VBUS_DISCHRG 0x20
struct tps80031_regulator_info {
/* Regulator register address.*/
u8 trans_reg;
u8 state_reg;
u8 force_reg;
u8 volt_reg;
u8 volt_id;
/*Power request bits */
int preq_bit;
/* used by regulator core */
struct regulator_desc desc;
};
struct tps80031_regulator {
struct device *dev;
struct regulator_dev *rdev;
struct tps80031_regulator_info *rinfo;
u8 device_flags;
unsigned int config_flags;
unsigned int ext_ctrl_flag;
};
static inline struct device *to_tps80031_dev(struct regulator_dev *rdev)
{
return rdev_get_dev(rdev)->parent->parent;
}
static int tps80031_reg_is_enabled(struct regulator_dev *rdev)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
struct device *parent = to_tps80031_dev(rdev);
u8 reg_val;
int ret;
if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ)
return true;
ret = tps80031_read(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg,
&reg_val);
if (ret < 0) {
dev_err(&rdev->dev, "Reg 0x%02x read failed, err = %d\n",
ri->rinfo->state_reg, ret);
return ret;
}
return ((reg_val & TPS80031_STATE_MASK) == TPS80031_STATE_ON);
}
static int tps80031_reg_enable(struct regulator_dev *rdev)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
struct device *parent = to_tps80031_dev(rdev);
int ret;
if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ)
return 0;
ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg,
TPS80031_STATE_ON, TPS80031_STATE_MASK);
if (ret < 0) {
dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n",
ri->rinfo->state_reg, ret);
return ret;
}
return ret;
}
static int tps80031_reg_disable(struct regulator_dev *rdev)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
struct device *parent = to_tps80031_dev(rdev);
int ret;
if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ)
return 0;
ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg,
TPS80031_STATE_OFF, TPS80031_STATE_MASK);
if (ret < 0)
dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n",
ri->rinfo->state_reg, ret);
return ret;
}
/* DCDC voltages for the selector of 58 to 63 */
static int tps80031_dcdc_voltages[4][5] = {
{ 1350, 1500, 1800, 1900, 2100},
{ 1350, 1500, 1800, 1900, 2100},
{ 2084, 2315, 2778, 2932, 3241},
{ 4167, 2315, 2778, 2932, 3241},
};
static int tps80031_dcdc_list_voltage(struct regulator_dev *rdev, unsigned sel)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
int volt_index = ri->device_flags & 0x3;
if (sel == 0)
return 0;
else if (sel < 58)
return regulator_list_voltage_linear(rdev, sel - 1);
else
return tps80031_dcdc_voltages[volt_index][sel - 58] * 1000;
}
static int tps80031_dcdc_set_voltage_sel(struct regulator_dev *rdev,
unsigned vsel)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
struct device *parent = to_tps80031_dev(rdev);
int ret;
u8 reg_val;
if (ri->rinfo->force_reg) {
ret = tps80031_read(parent, ri->rinfo->volt_id,
ri->rinfo->force_reg, &reg_val);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
ri->rinfo->force_reg, ret);
return ret;
}
if (!(reg_val & SMPS_CMD_MASK)) {
ret = tps80031_update(parent, ri->rinfo->volt_id,
ri->rinfo->force_reg, vsel, SMPS_VSEL_MASK);
if (ret < 0)
dev_err(ri->dev,
"reg 0x%02x update failed, e = %d\n",
ri->rinfo->force_reg, ret);
return ret;
}
}
ret = tps80031_update(parent, ri->rinfo->volt_id,
ri->rinfo->volt_reg, vsel, SMPS_VSEL_MASK);
if (ret < 0)
dev_err(ri->dev, "reg 0x%02x update failed, e = %d\n",
ri->rinfo->volt_reg, ret);
return ret;
}
static int tps80031_dcdc_get_voltage_sel(struct regulator_dev *rdev)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
struct device *parent = to_tps80031_dev(rdev);
uint8_t vsel = 0;
int ret;
if (ri->rinfo->force_reg) {
ret = tps80031_read(parent, ri->rinfo->volt_id,
ri->rinfo->force_reg, &vsel);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
ri->rinfo->force_reg, ret);
return ret;
}
if (!(vsel & SMPS_CMD_MASK))
return vsel & SMPS_VSEL_MASK;
}
ret = tps80031_read(parent, ri->rinfo->volt_id,
ri->rinfo->volt_reg, &vsel);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
ri->rinfo->volt_reg, ret);
return ret;
}
return vsel & SMPS_VSEL_MASK;
}
static int tps80031_ldo_list_voltage(struct regulator_dev *rdev,
unsigned int sel)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
struct device *parent = to_tps80031_dev(rdev);
/* Check for valid setting for TPS80031 or TPS80032-ES1.0 */
if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) &&
(ri->device_flags & TRACK_MODE_ENABLE)) {
unsigned nvsel = (sel) & 0x1F;
if (((tps80031_get_chip_info(parent) == TPS80031) ||
((tps80031_get_chip_info(parent) == TPS80032) &&
(tps80031_get_pmu_version(parent) == 0x0))) &&
((nvsel == 0x0) || (nvsel >= 0x19 && nvsel <= 0x1F))) {
dev_err(ri->dev,
"Invalid sel %d in track mode LDO2\n",
nvsel);
return -EINVAL;
}
}
return regulator_list_voltage_linear(rdev, sel);
}
static int tps80031_ldo_map_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
struct device *parent = to_tps80031_dev(rdev);
/* Check for valid setting for TPS80031 or TPS80032-ES1.0 */
if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) &&
(ri->device_flags & TRACK_MODE_ENABLE)) {
if (((tps80031_get_chip_info(parent) == TPS80031) ||
((tps80031_get_chip_info(parent) == TPS80032) &&
(tps80031_get_pmu_version(parent) == 0x0)))) {
return regulator_map_voltage_iterate(rdev, min_uV,
max_uV);
}
}
return regulator_map_voltage_linear(rdev, min_uV, max_uV);
}
static int tps80031_vbus_is_enabled(struct regulator_dev *rdev)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
struct device *parent = to_tps80031_dev(rdev);
int ret = -EIO;
uint8_t ctrl1 = 0;
uint8_t ctrl3 = 0;
ret = tps80031_read(parent, TPS80031_SLAVE_ID2,
TPS80031_CHARGERUSB_CTRL1, &ctrl1);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
TPS80031_CHARGERUSB_CTRL1, ret);
return ret;
}
ret = tps80031_read(parent, TPS80031_SLAVE_ID2,
TPS80031_CHARGERUSB_CTRL3, &ctrl3);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
TPS80031_CHARGERUSB_CTRL3, ret);
return ret;
}
if ((ctrl1 & OPA_MODE_EN) && (ctrl3 & BOOST_HW_PWR_EN))
return 1;
return ret;
}
static int tps80031_vbus_enable(struct regulator_dev *rdev)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
struct device *parent = to_tps80031_dev(rdev);
int ret;
ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2,
TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
TPS80031_CHARGERUSB_CTRL1, ret);
return ret;
}
ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2,
TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
TPS80031_CHARGERUSB_CTRL3, ret);
return ret;
}
return ret;
}
static int tps80031_vbus_disable(struct regulator_dev *rdev)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
struct device *parent = to_tps80031_dev(rdev);
int ret = 0;
if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) {
ret = tps80031_write(parent, TPS80031_SLAVE_ID2,
USB_VBUS_CTRL_SET, VBUS_DISCHRG);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n",
USB_VBUS_CTRL_SET, ret);
return ret;
}
}
ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2,
TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n",
TPS80031_CHARGERUSB_CTRL1, ret);
return ret;
}
ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2,
TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n",
TPS80031_CHARGERUSB_CTRL3, ret);
return ret;
}
mdelay(DIV_ROUND_UP(ri->rinfo->desc.enable_time, 1000));
if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) {
ret = tps80031_write(parent, TPS80031_SLAVE_ID2,
USB_VBUS_CTRL_CLR, VBUS_DISCHRG);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n",
USB_VBUS_CTRL_CLR, ret);
return ret;
}
}
return ret;
}
static struct regulator_ops tps80031_dcdc_ops = {
.list_voltage = tps80031_dcdc_list_voltage,
.set_voltage_sel = tps80031_dcdc_set_voltage_sel,
.get_voltage_sel = tps80031_dcdc_get_voltage_sel,
.enable = tps80031_reg_enable,
.disable = tps80031_reg_disable,
.is_enabled = tps80031_reg_is_enabled,
};
static struct regulator_ops tps80031_ldo_ops = {
.list_voltage = tps80031_ldo_list_voltage,
.map_voltage = tps80031_ldo_map_voltage,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.enable = tps80031_reg_enable,
.disable = tps80031_reg_disable,
.is_enabled = tps80031_reg_is_enabled,
};
static struct regulator_ops tps80031_vbus_sw_ops = {
.list_voltage = regulator_list_voltage_linear,
.enable = tps80031_vbus_enable,
.disable = tps80031_vbus_disable,
.is_enabled = tps80031_vbus_is_enabled,
};
static struct regulator_ops tps80031_vbus_hw_ops = {
.list_voltage = regulator_list_voltage_linear,
};
static struct regulator_ops tps80031_ext_reg_ops = {
.list_voltage = regulator_list_voltage_linear,
.enable = tps80031_reg_enable,
.disable = tps80031_reg_disable,
.is_enabled = tps80031_reg_is_enabled,
};
/* Non-exiting default definition for some register */
#define TPS80031_SMPS3_CFG_FORCE 0
#define TPS80031_SMPS4_CFG_FORCE 0
#define TPS80031_VBUS_CFG_TRANS 0
#define TPS80031_VBUS_CFG_STATE 0
#define TPS80031_REG_SMPS(_id, _volt_id, _pbit) \
{ \
.trans_reg = TPS80031_##_id##_CFG_TRANS, \
.state_reg = TPS80031_##_id##_CFG_STATE, \
.force_reg = TPS80031_##_id##_CFG_FORCE, \
.volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \
.volt_id = TPS80031_SLAVE_##_volt_id, \
.preq_bit = _pbit, \
.desc = { \
.name = "tps80031_"#_id, \
.id = TPS80031_REGULATOR_##_id, \
.n_voltages = 63, \
.ops = &tps80031_dcdc_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.enable_time = 500, \
}, \
}
#define TPS80031_REG_LDO(_id, _preq_bit) \
{ \
.trans_reg = TPS80031_##_id##_CFG_TRANS, \
.state_reg = TPS80031_##_id##_CFG_STATE, \
.volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \
.volt_id = TPS80031_SLAVE_ID1, \
.preq_bit = _preq_bit, \
.desc = { \
.owner = THIS_MODULE, \
.name = "tps80031_"#_id, \
.id = TPS80031_REGULATOR_##_id, \
.ops = &tps80031_ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.min_uV = 1000000, \
.uV_step = 100000, \
.linear_min_sel = 1, \
.n_voltages = 25, \
.vsel_reg = TPS80031_##_id##_CFG_VOLTAGE, \
.vsel_mask = LDO_VSEL_MASK, \
.enable_time = 500, \
}, \
}
#define TPS80031_REG_FIXED(_id, max_mV, _ops, _delay, _pbit) \
{ \
.trans_reg = TPS80031_##_id##_CFG_TRANS, \
.state_reg = TPS80031_##_id##_CFG_STATE, \
.volt_id = TPS80031_SLAVE_ID1, \
.preq_bit = _pbit, \
.desc = { \
.name = "tps80031_"#_id, \
.id = TPS80031_REGULATOR_##_id, \
.min_uV = max_mV * 1000, \
.n_voltages = 1, \
.ops = &_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.enable_time = _delay, \
}, \
}
static struct tps80031_regulator_info tps80031_rinfo[TPS80031_REGULATOR_MAX] = {
TPS80031_REG_SMPS(VIO, ID0, 4),
TPS80031_REG_SMPS(SMPS1, ID0, 0),
TPS80031_REG_SMPS(SMPS2, ID0, 1),
TPS80031_REG_SMPS(SMPS3, ID1, 2),
TPS80031_REG_SMPS(SMPS4, ID1, 3),
TPS80031_REG_LDO(VANA, -1),
TPS80031_REG_LDO(LDO1, 8),
TPS80031_REG_LDO(LDO2, 9),
TPS80031_REG_LDO(LDO3, 10),
TPS80031_REG_LDO(LDO4, 11),
TPS80031_REG_LDO(LDO5, 12),
TPS80031_REG_LDO(LDO6, 13),
TPS80031_REG_LDO(LDO7, 14),
TPS80031_REG_LDO(LDOLN, 15),
TPS80031_REG_LDO(LDOUSB, 5),
TPS80031_REG_FIXED(VBUS, 5000, tps80031_vbus_hw_ops, 100000, -1),
TPS80031_REG_FIXED(REGEN1, 3300, tps80031_ext_reg_ops, 0, 16),
TPS80031_REG_FIXED(REGEN2, 3300, tps80031_ext_reg_ops, 0, 17),
TPS80031_REG_FIXED(SYSEN, 3300, tps80031_ext_reg_ops, 0, 18),
};
static int tps80031_power_req_config(struct device *parent,
struct tps80031_regulator *ri,
struct tps80031_regulator_platform_data *tps80031_pdata)
{
int ret = 0;
if (ri->rinfo->preq_bit < 0)
goto skip_pwr_req_config;
ret = tps80031_ext_power_req_config(parent, ri->ext_ctrl_flag,
ri->rinfo->preq_bit, ri->rinfo->state_reg,
ri->rinfo->trans_reg);
if (ret < 0) {
dev_err(ri->dev, "ext powerreq config failed, err = %d\n", ret);
return ret;
}
skip_pwr_req_config:
if (tps80031_pdata->ext_ctrl_flag & TPS80031_PWR_ON_ON_SLEEP) {
ret = tps80031_update(parent, TPS80031_SLAVE_ID1,
ri->rinfo->trans_reg, TPS80031_TRANS_SLEEP_ON,
TPS80031_TRANS_SLEEP_MASK);
if (ret < 0) {
dev_err(ri->dev, "Reg 0x%02x update failed, e %d\n",
ri->rinfo->trans_reg, ret);
return ret;
}
}
return ret;
}
static int tps80031_regulator_config(struct device *parent,
struct tps80031_regulator *ri,
struct tps80031_regulator_platform_data *tps80031_pdata)
{
int ret = 0;
switch (ri->rinfo->desc.id) {
case TPS80031_REGULATOR_LDOUSB:
if (ri->config_flags & (TPS80031_USBLDO_INPUT_VSYS |
TPS80031_USBLDO_INPUT_PMID)) {
unsigned val = 0;
if (ri->config_flags & TPS80031_USBLDO_INPUT_VSYS)
val = MISC2_LDOUSB_IN_VSYS;
else
val = MISC2_LDOUSB_IN_PMID;
ret = tps80031_update(parent, TPS80031_SLAVE_ID1,
TPS80031_MISC2, val,
MISC2_LDOUSB_IN_MASK);
if (ret < 0) {
dev_err(ri->dev,
"LDOUSB config failed, e= %d\n", ret);
return ret;
}
}
break;
case TPS80031_REGULATOR_LDO3:
if (ri->config_flags & TPS80031_LDO3_OUTPUT_VIB) {
ret = tps80031_update(parent, TPS80031_SLAVE_ID1,
TPS80031_MISC2, MISC2_LDO3_SEL_VIB_VAL,
MISC2_LDO3_SEL_VIB_MASK);
if (ret < 0) {
dev_err(ri->dev,
"LDO3 config failed, e = %d\n", ret);
return ret;
}
}
break;
case TPS80031_REGULATOR_VBUS:
/* Provide SW control Ops if VBUS is SW control */
if (!(ri->config_flags & TPS80031_VBUS_SW_ONLY))
ri->rinfo->desc.ops = &tps80031_vbus_sw_ops;
break;
default:
break;
}
/* Configure Active state to ON, SLEEP to OFF and OFF_state to OFF */
ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->trans_reg,
TPS80031_TRANS_ACTIVE_ON | TPS80031_TRANS_SLEEP_OFF |
TPS80031_TRANS_OFF_OFF, TPS80031_TRANS_ACTIVE_MASK |
TPS80031_TRANS_SLEEP_MASK | TPS80031_TRANS_OFF_MASK);
if (ret < 0) {
dev_err(ri->dev, "trans reg update failed, e %d\n", ret);
return ret;
}
return ret;
}
static int check_smps_mode_mult(struct device *parent,
struct tps80031_regulator *ri)
{
int mult_offset;
int ret;
u8 smps_offset;
u8 smps_mult;
ret = tps80031_read(parent, TPS80031_SLAVE_ID1,
TPS80031_SMPS_OFFSET, &smps_offset);
if (ret < 0) {
dev_err(parent, "Error in reading smps offset register\n");
return ret;
}
ret = tps80031_read(parent, TPS80031_SLAVE_ID1,
TPS80031_SMPS_MULT, &smps_mult);
if (ret < 0) {
dev_err(parent, "Error in reading smps mult register\n");
return ret;
}
switch (ri->rinfo->desc.id) {
case TPS80031_REGULATOR_VIO:
mult_offset = SMPS_MULTOFFSET_VIO;
break;
case TPS80031_REGULATOR_SMPS1:
mult_offset = SMPS_MULTOFFSET_SMPS1;
break;
case TPS80031_REGULATOR_SMPS2:
mult_offset = SMPS_MULTOFFSET_SMPS2;
break;
case TPS80031_REGULATOR_SMPS3:
mult_offset = SMPS_MULTOFFSET_SMPS3;
break;
case TPS80031_REGULATOR_SMPS4:
mult_offset = SMPS_MULTOFFSET_SMPS4;
break;
case TPS80031_REGULATOR_LDO2:
ri->device_flags = smps_mult & BIT(5) ? TRACK_MODE_ENABLE : 0;
/* TRACK mode the ldo2 varies from 600mV to 1300mV */
if (ri->device_flags & TRACK_MODE_ENABLE) {
ri->rinfo->desc.min_uV = 600000;
ri->rinfo->desc.uV_step = 12500;
ri->rinfo->desc.n_voltages = 57;
ri->rinfo->desc.vsel_mask = LDO_TRACK_VSEL_MASK;
}
return 0;
default:
return 0;
}
ri->device_flags = (smps_offset & mult_offset) ? DCDC_OFFSET_EN : 0;
ri->device_flags |= (smps_mult & mult_offset) ? DCDC_EXTENDED_EN : 0;
switch (ri->device_flags) {
case 0:
ri->rinfo->desc.min_uV = 607700;
ri->rinfo->desc.uV_step = 12660;
break;
case DCDC_OFFSET_EN:
ri->rinfo->desc.min_uV = 700000;
ri->rinfo->desc.uV_step = 12500;
break;
case DCDC_EXTENDED_EN:
ri->rinfo->desc.min_uV = 1852000;
ri->rinfo->desc.uV_step = 38600;
break;
case DCDC_OFFSET_EN | DCDC_EXTENDED_EN:
ri->rinfo->desc.min_uV = 2161000;
ri->rinfo->desc.uV_step = 38600;
break;
}
return 0;
}
static int tps80031_regulator_probe(struct platform_device *pdev)
{
struct tps80031_platform_data *pdata;
struct tps80031_regulator_platform_data *tps_pdata;
struct tps80031_regulator *ri;
struct tps80031_regulator *pmic;
struct regulator_dev *rdev;
struct regulator_config config = { };
struct tps80031 *tps80031_mfd = dev_get_drvdata(pdev->dev.parent);
int ret;
int num;
pdata = dev_get_platdata(pdev->dev.parent);
if (!pdata) {
dev_err(&pdev->dev, "No platform data\n");
return -EINVAL;
}
pmic = devm_kzalloc(&pdev->dev,
TPS80031_REGULATOR_MAX * sizeof(*pmic), GFP_KERNEL);
if (!pmic) {
dev_err(&pdev->dev, "mem alloc for pmic failed\n");
return -ENOMEM;
}
for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) {
tps_pdata = pdata->regulator_pdata[num];
ri = &pmic[num];
ri->rinfo = &tps80031_rinfo[num];
ri->dev = &pdev->dev;
check_smps_mode_mult(pdev->dev.parent, ri);
config.dev = &pdev->dev;
config.init_data = NULL;
config.driver_data = ri;
config.regmap = tps80031_mfd->regmap[ri->rinfo->volt_id];
if (tps_pdata) {
config.init_data = tps_pdata->reg_init_data;
ri->config_flags = tps_pdata->config_flags;
ri->ext_ctrl_flag = tps_pdata->ext_ctrl_flag;
ret = tps80031_regulator_config(pdev->dev.parent,
ri, tps_pdata);
if (ret < 0) {
dev_err(&pdev->dev,
"regulator config failed, e %d\n", ret);
return ret;
}
ret = tps80031_power_req_config(pdev->dev.parent,
ri, tps_pdata);
if (ret < 0) {
dev_err(&pdev->dev,
"pwr_req config failed, err %d\n", ret);
return ret;
}
}
rdev = devm_regulator_register(&pdev->dev, &ri->rinfo->desc,
&config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev,
"register regulator failed %s\n",
ri->rinfo->desc.name);
return PTR_ERR(rdev);
}
ri->rdev = rdev;
}
platform_set_drvdata(pdev, pmic);
return 0;
}
static struct platform_driver tps80031_regulator_driver = {
.driver = {
.name = "tps80031-pmic",
.owner = THIS_MODULE,
},
.probe = tps80031_regulator_probe,
};
static int __init tps80031_regulator_init(void)
{
return platform_driver_register(&tps80031_regulator_driver);
}
subsys_initcall(tps80031_regulator_init);
static void __exit tps80031_regulator_exit(void)
{
platform_driver_unregister(&tps80031_regulator_driver);
}
module_exit(tps80031_regulator_exit);
MODULE_ALIAS("platform:tps80031-regulator");
MODULE_DESCRIPTION("Regulator Driver for TI TPS80031/TPS80032 PMIC");
MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
MODULE_LICENSE("GPL v2");
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