+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-//
-// 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>
-
-#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 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,
- ®_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 const 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, ®_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;
- 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;
-
- 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 const 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 const 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 const 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 const struct regulator_ops tps80031_vbus_hw_ops = {
- .list_voltage = regulator_list_voltage_linear,
-};
-
-static const 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;
-
- 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_kcalloc(&pdev->dev,
- TPS80031_REGULATOR_MAX, sizeof(*pmic), GFP_KERNEL);
- if (!pmic)
- 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);
- }
- }
-
- platform_set_drvdata(pdev, pmic);
- return 0;
-}
-
-static struct platform_driver tps80031_regulator_driver = {
- .driver = {
- .name = "tps80031-pmic",
- },
- .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");
projects / linux-2.6-microblaze.git / commitdiff