| /* |
| * tps80031-regulator.c -- TI TPS80031 regulator driver. |
| * |
| * Regulator driver for TITPS80031/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, |
| ®_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, ®_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_set_voltage_sel(struct regulator_dev *rdev, |
| unsigned sel) |
| { |
| struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
| struct device *parent = to_tps80031_dev(rdev); |
| int ret; |
| |
| /* 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; |
| } |
| } |
| |
| ret = tps80031_write(parent, ri->rinfo->volt_id, |
| ri->rinfo->volt_reg, sel); |
| if (ret < 0) |
| dev_err(ri->dev, "Error in writing reg 0x%02x, e = %d\n", |
| ri->rinfo->volt_reg, ret); |
| return ret; |
| } |
| |
| static int tps80031_ldo_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; |
| int ret; |
| |
| ret = tps80031_read(parent, ri->rinfo->volt_id, |
| ri->rinfo->volt_reg, &vsel); |
| if (ret < 0) { |
| dev_err(ri->dev, "Error in writing the Voltage register\n"); |
| return ret; |
| } |
| return vsel & rdev->desc->vsel_mask; |
| } |
| |
| static int tps80031_ldo_list_voltage(struct regulator_dev *rdev, unsigned sel) |
| { |
| if (sel == 0) |
| return 0; |
| else |
| return regulator_list_voltage_linear(rdev, sel - 1); |
| } |
| |
| 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_CTRL1, 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, |
| .set_voltage_sel = tps80031_ldo_set_voltage_sel, |
| .get_voltage_sel = tps80031_ldo_get_voltage_sel, |
| .enable = tps80031_reg_enable, |
| .disable = tps80031_reg_disable, |
| .is_enabled = tps80031_reg_is_enabled, |
| }; |
| |
| static struct regulator_ops tps80031_vbus_sw_ops = { |
| .enable = tps80031_vbus_enable, |
| .disable = tps80031_vbus_disable, |
| .is_enabled = tps80031_vbus_is_enabled, |
| }; |
| |
| static struct regulator_ops tps80031_vbus_hw_ops = { |
| }; |
| |
| static struct regulator_ops tps80031_ext_reg_ops = { |
| .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, \ |
| .n_voltages = 25, \ |
| .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, \ |
| .n_voltages = 2, \ |
| .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 __devinit tps80031_regulator_probe(struct platform_device *pdev) |
| { |
| struct tps80031_platform_data *pdata; |
| struct tps80031_regulator_platform_data *tps_pdata; |
| struct tps80031_regulator_info *rinfo; |
| struct tps80031_regulator *ri; |
| struct tps80031_regulator *pmic; |
| struct regulator_dev *rdev; |
| struct regulator_config config = { }; |
| 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]; |
| rinfo = &tps80031_rinfo[num]; |
| ri = &pmic[num]; |
| ri->rinfo = rinfo; |
| ri->dev = &pdev->dev; |
| |
| check_smps_mode_mult(pdev->dev.parent, ri); |
| config.dev = &pdev->dev; |
| config.init_data = NULL; |
| config.driver_data = ri; |
| 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); |
| goto fail; |
| } |
| |
| 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); |
| goto fail; |
| } |
| } |
| rdev = regulator_register(&ri->rinfo->desc, &config); |
| if (IS_ERR_OR_NULL(rdev)) { |
| dev_err(&pdev->dev, |
| "register regulator failed %s\n", |
| ri->rinfo->desc.name); |
| ret = PTR_ERR(rdev); |
| goto fail; |
| } |
| ri->rdev = rdev; |
| } |
| |
| platform_set_drvdata(pdev, pmic); |
| return 0; |
| fail: |
| while (--num >= 0) { |
| ri = &pmic[num]; |
| regulator_unregister(ri->rdev); |
| } |
| return ret; |
| } |
| |
| static int __devexit tps80031_regulator_remove(struct platform_device *pdev) |
| { |
| struct tps80031_regulator *pmic = platform_get_drvdata(pdev); |
| struct tps80031_regulator *ri = NULL; |
| int num; |
| |
| for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) { |
| ri = &pmic[num]; |
| regulator_unregister(ri->rdev); |
| } |
| return 0; |
| } |
| |
| static struct platform_driver tps80031_regulator_driver = { |
| .driver = { |
| .name = "tps80031-pmic", |
| .owner = THIS_MODULE, |
| }, |
| .probe = tps80031_regulator_probe, |
| .remove = tps80031_regulator_remove, |
| }; |
| |
| 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 PMIC"); |
| MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>"); |
| MODULE_LICENSE("GPL v2"); |