| /* |
| * Driver for Regulator part of Palmas PMIC Chips |
| * |
| * Copyright 2011-2013 Texas Instruments Inc. |
| * |
| * Author: Graeme Gregory <gg@slimlogic.co.uk> |
| * Author: Ian Lartey <ian@slimlogic.co.uk> |
| * |
| * 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; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/err.h> |
| #include <linux/platform_device.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/slab.h> |
| #include <linux/regmap.h> |
| #include <linux/mfd/palmas.h> |
| #include <linux/of.h> |
| #include <linux/of_platform.h> |
| #include <linux/regulator/of_regulator.h> |
| |
| struct regs_info { |
| char *name; |
| char *sname; |
| u8 vsel_addr; |
| u8 ctrl_addr; |
| u8 tstep_addr; |
| int sleep_id; |
| }; |
| |
| static const struct regulator_linear_range smps_low_ranges[] = { |
| REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0), |
| REGULATOR_LINEAR_RANGE(500000, 0x1, 0x6, 0), |
| REGULATOR_LINEAR_RANGE(510000, 0x7, 0x79, 10000), |
| REGULATOR_LINEAR_RANGE(1650000, 0x7A, 0x7f, 0), |
| }; |
| |
| static const struct regulator_linear_range smps_high_ranges[] = { |
| REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0), |
| REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x6, 0), |
| REGULATOR_LINEAR_RANGE(1020000, 0x7, 0x79, 20000), |
| REGULATOR_LINEAR_RANGE(3300000, 0x7A, 0x7f, 0), |
| }; |
| |
| static const struct regs_info palmas_regs_info[] = { |
| { |
| .name = "SMPS12", |
| .sname = "smps1-in", |
| .vsel_addr = PALMAS_SMPS12_VOLTAGE, |
| .ctrl_addr = PALMAS_SMPS12_CTRL, |
| .tstep_addr = PALMAS_SMPS12_TSTEP, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS12, |
| }, |
| { |
| .name = "SMPS123", |
| .sname = "smps1-in", |
| .vsel_addr = PALMAS_SMPS12_VOLTAGE, |
| .ctrl_addr = PALMAS_SMPS12_CTRL, |
| .tstep_addr = PALMAS_SMPS12_TSTEP, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS12, |
| }, |
| { |
| .name = "SMPS3", |
| .sname = "smps3-in", |
| .vsel_addr = PALMAS_SMPS3_VOLTAGE, |
| .ctrl_addr = PALMAS_SMPS3_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS3, |
| }, |
| { |
| .name = "SMPS45", |
| .sname = "smps4-in", |
| .vsel_addr = PALMAS_SMPS45_VOLTAGE, |
| .ctrl_addr = PALMAS_SMPS45_CTRL, |
| .tstep_addr = PALMAS_SMPS45_TSTEP, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS45, |
| }, |
| { |
| .name = "SMPS457", |
| .sname = "smps4-in", |
| .vsel_addr = PALMAS_SMPS45_VOLTAGE, |
| .ctrl_addr = PALMAS_SMPS45_CTRL, |
| .tstep_addr = PALMAS_SMPS45_TSTEP, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS45, |
| }, |
| { |
| .name = "SMPS6", |
| .sname = "smps6-in", |
| .vsel_addr = PALMAS_SMPS6_VOLTAGE, |
| .ctrl_addr = PALMAS_SMPS6_CTRL, |
| .tstep_addr = PALMAS_SMPS6_TSTEP, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS6, |
| }, |
| { |
| .name = "SMPS7", |
| .sname = "smps7-in", |
| .vsel_addr = PALMAS_SMPS7_VOLTAGE, |
| .ctrl_addr = PALMAS_SMPS7_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS7, |
| }, |
| { |
| .name = "SMPS8", |
| .sname = "smps8-in", |
| .vsel_addr = PALMAS_SMPS8_VOLTAGE, |
| .ctrl_addr = PALMAS_SMPS8_CTRL, |
| .tstep_addr = PALMAS_SMPS8_TSTEP, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS8, |
| }, |
| { |
| .name = "SMPS9", |
| .sname = "smps9-in", |
| .vsel_addr = PALMAS_SMPS9_VOLTAGE, |
| .ctrl_addr = PALMAS_SMPS9_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS9, |
| }, |
| { |
| .name = "SMPS10_OUT2", |
| .sname = "smps10-in", |
| .ctrl_addr = PALMAS_SMPS10_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS10, |
| }, |
| { |
| .name = "SMPS10_OUT1", |
| .sname = "smps10-out2", |
| .ctrl_addr = PALMAS_SMPS10_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS10, |
| }, |
| { |
| .name = "LDO1", |
| .sname = "ldo1-in", |
| .vsel_addr = PALMAS_LDO1_VOLTAGE, |
| .ctrl_addr = PALMAS_LDO1_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO1, |
| }, |
| { |
| .name = "LDO2", |
| .sname = "ldo2-in", |
| .vsel_addr = PALMAS_LDO2_VOLTAGE, |
| .ctrl_addr = PALMAS_LDO2_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO2, |
| }, |
| { |
| .name = "LDO3", |
| .sname = "ldo3-in", |
| .vsel_addr = PALMAS_LDO3_VOLTAGE, |
| .ctrl_addr = PALMAS_LDO3_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO3, |
| }, |
| { |
| .name = "LDO4", |
| .sname = "ldo4-in", |
| .vsel_addr = PALMAS_LDO4_VOLTAGE, |
| .ctrl_addr = PALMAS_LDO4_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO4, |
| }, |
| { |
| .name = "LDO5", |
| .sname = "ldo5-in", |
| .vsel_addr = PALMAS_LDO5_VOLTAGE, |
| .ctrl_addr = PALMAS_LDO5_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO5, |
| }, |
| { |
| .name = "LDO6", |
| .sname = "ldo6-in", |
| .vsel_addr = PALMAS_LDO6_VOLTAGE, |
| .ctrl_addr = PALMAS_LDO6_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO6, |
| }, |
| { |
| .name = "LDO7", |
| .sname = "ldo7-in", |
| .vsel_addr = PALMAS_LDO7_VOLTAGE, |
| .ctrl_addr = PALMAS_LDO7_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO7, |
| }, |
| { |
| .name = "LDO8", |
| .sname = "ldo8-in", |
| .vsel_addr = PALMAS_LDO8_VOLTAGE, |
| .ctrl_addr = PALMAS_LDO8_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO8, |
| }, |
| { |
| .name = "LDO9", |
| .sname = "ldo9-in", |
| .vsel_addr = PALMAS_LDO9_VOLTAGE, |
| .ctrl_addr = PALMAS_LDO9_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO9, |
| }, |
| { |
| .name = "LDOLN", |
| .sname = "ldoln-in", |
| .vsel_addr = PALMAS_LDOLN_VOLTAGE, |
| .ctrl_addr = PALMAS_LDOLN_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDOLN, |
| }, |
| { |
| .name = "LDOUSB", |
| .sname = "ldousb-in", |
| .vsel_addr = PALMAS_LDOUSB_VOLTAGE, |
| .ctrl_addr = PALMAS_LDOUSB_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDOUSB, |
| }, |
| { |
| .name = "REGEN1", |
| .ctrl_addr = PALMAS_REGEN1_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN1, |
| }, |
| { |
| .name = "REGEN2", |
| .ctrl_addr = PALMAS_REGEN2_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN2, |
| }, |
| { |
| .name = "REGEN3", |
| .ctrl_addr = PALMAS_REGEN3_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN3, |
| }, |
| { |
| .name = "SYSEN1", |
| .ctrl_addr = PALMAS_SYSEN1_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SYSEN1, |
| }, |
| { |
| .name = "SYSEN2", |
| .ctrl_addr = PALMAS_SYSEN2_CTRL, |
| .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SYSEN2, |
| }, |
| }; |
| |
| static unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500}; |
| |
| #define SMPS_CTRL_MODE_OFF 0x00 |
| #define SMPS_CTRL_MODE_ON 0x01 |
| #define SMPS_CTRL_MODE_ECO 0x02 |
| #define SMPS_CTRL_MODE_PWM 0x03 |
| |
| #define PALMAS_SMPS_NUM_VOLTAGES 122 |
| #define PALMAS_SMPS10_NUM_VOLTAGES 2 |
| #define PALMAS_LDO_NUM_VOLTAGES 50 |
| |
| #define SMPS10_VSEL (1<<3) |
| #define SMPS10_BOOST_EN (1<<2) |
| #define SMPS10_BYPASS_EN (1<<1) |
| #define SMPS10_SWITCH_EN (1<<0) |
| |
| #define REGULATOR_SLAVE 0 |
| |
| static int palmas_smps_read(struct palmas *palmas, unsigned int reg, |
| unsigned int *dest) |
| { |
| unsigned int addr; |
| |
| addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg); |
| |
| return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest); |
| } |
| |
| static int palmas_smps_write(struct palmas *palmas, unsigned int reg, |
| unsigned int value) |
| { |
| unsigned int addr; |
| |
| addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg); |
| |
| return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value); |
| } |
| |
| static int palmas_ldo_read(struct palmas *palmas, unsigned int reg, |
| unsigned int *dest) |
| { |
| unsigned int addr; |
| |
| addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg); |
| |
| return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest); |
| } |
| |
| static int palmas_ldo_write(struct palmas *palmas, unsigned int reg, |
| unsigned int value) |
| { |
| unsigned int addr; |
| |
| addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg); |
| |
| return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value); |
| } |
| |
| static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode) |
| { |
| struct palmas_pmic *pmic = rdev_get_drvdata(dev); |
| int id = rdev_get_id(dev); |
| unsigned int reg; |
| bool rail_enable = true; |
| |
| palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); |
| reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK; |
| |
| if (reg == SMPS_CTRL_MODE_OFF) |
| rail_enable = false; |
| |
| switch (mode) { |
| case REGULATOR_MODE_NORMAL: |
| reg |= SMPS_CTRL_MODE_ON; |
| break; |
| case REGULATOR_MODE_IDLE: |
| reg |= SMPS_CTRL_MODE_ECO; |
| break; |
| case REGULATOR_MODE_FAST: |
| reg |= SMPS_CTRL_MODE_PWM; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| pmic->current_reg_mode[id] = reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK; |
| if (rail_enable) |
| palmas_smps_write(pmic->palmas, |
| palmas_regs_info[id].ctrl_addr, reg); |
| return 0; |
| } |
| |
| static unsigned int palmas_get_mode_smps(struct regulator_dev *dev) |
| { |
| struct palmas_pmic *pmic = rdev_get_drvdata(dev); |
| int id = rdev_get_id(dev); |
| unsigned int reg; |
| |
| reg = pmic->current_reg_mode[id] & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK; |
| |
| switch (reg) { |
| case SMPS_CTRL_MODE_ON: |
| return REGULATOR_MODE_NORMAL; |
| case SMPS_CTRL_MODE_ECO: |
| return REGULATOR_MODE_IDLE; |
| case SMPS_CTRL_MODE_PWM: |
| return REGULATOR_MODE_FAST; |
| } |
| |
| return 0; |
| } |
| |
| static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev, |
| int ramp_delay) |
| { |
| struct palmas_pmic *pmic = rdev_get_drvdata(rdev); |
| int id = rdev_get_id(rdev); |
| unsigned int reg = 0; |
| unsigned int addr = palmas_regs_info[id].tstep_addr; |
| int ret; |
| |
| /* SMPS3 and SMPS7 do not have tstep_addr setting */ |
| switch (id) { |
| case PALMAS_REG_SMPS3: |
| case PALMAS_REG_SMPS7: |
| return 0; |
| } |
| |
| if (ramp_delay <= 0) |
| reg = 0; |
| else if (ramp_delay <= 2500) |
| reg = 3; |
| else if (ramp_delay <= 5000) |
| reg = 2; |
| else |
| reg = 1; |
| |
| ret = palmas_smps_write(pmic->palmas, addr, reg); |
| if (ret < 0) { |
| dev_err(pmic->palmas->dev, "TSTEP write failed: %d\n", ret); |
| return ret; |
| } |
| |
| pmic->ramp_delay[id] = palmas_smps_ramp_delay[reg]; |
| return ret; |
| } |
| |
| static struct regulator_ops palmas_ops_smps = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .set_mode = palmas_set_mode_smps, |
| .get_mode = palmas_get_mode_smps, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .list_voltage = regulator_list_voltage_linear_range, |
| .map_voltage = regulator_map_voltage_linear_range, |
| .set_voltage_time_sel = regulator_set_voltage_time_sel, |
| .set_ramp_delay = palmas_smps_set_ramp_delay, |
| }; |
| |
| static struct regulator_ops palmas_ops_ext_control_smps = { |
| .set_mode = palmas_set_mode_smps, |
| .get_mode = palmas_get_mode_smps, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .list_voltage = regulator_list_voltage_linear_range, |
| .map_voltage = regulator_map_voltage_linear_range, |
| .set_voltage_time_sel = regulator_set_voltage_time_sel, |
| .set_ramp_delay = palmas_smps_set_ramp_delay, |
| }; |
| |
| static struct regulator_ops palmas_ops_smps10 = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .list_voltage = regulator_list_voltage_linear, |
| .map_voltage = regulator_map_voltage_linear, |
| .set_bypass = regulator_set_bypass_regmap, |
| .get_bypass = regulator_get_bypass_regmap, |
| }; |
| |
| static int palmas_is_enabled_ldo(struct regulator_dev *dev) |
| { |
| struct palmas_pmic *pmic = rdev_get_drvdata(dev); |
| int id = rdev_get_id(dev); |
| unsigned int reg; |
| |
| palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); |
| |
| reg &= PALMAS_LDO1_CTRL_STATUS; |
| |
| return !!(reg); |
| } |
| |
| static struct regulator_ops palmas_ops_ldo = { |
| .is_enabled = palmas_is_enabled_ldo, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .list_voltage = regulator_list_voltage_linear, |
| .map_voltage = regulator_map_voltage_linear, |
| }; |
| |
| static struct regulator_ops palmas_ops_ext_control_ldo = { |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .list_voltage = regulator_list_voltage_linear, |
| .map_voltage = regulator_map_voltage_linear, |
| }; |
| |
| static struct regulator_ops palmas_ops_extreg = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| }; |
| |
| static struct regulator_ops palmas_ops_ext_control_extreg = { |
| }; |
| |
| static int palmas_regulator_config_external(struct palmas *palmas, int id, |
| struct palmas_reg_init *reg_init) |
| { |
| int sleep_id = palmas_regs_info[id].sleep_id; |
| int ret; |
| |
| ret = palmas_ext_control_req_config(palmas, sleep_id, |
| reg_init->roof_floor, true); |
| if (ret < 0) |
| dev_err(palmas->dev, |
| "Ext control config for regulator %d failed %d\n", |
| id, ret); |
| return ret; |
| } |
| |
| /* |
| * setup the hardware based sleep configuration of the SMPS/LDO regulators |
| * from the platform data. This is different to the software based control |
| * supported by the regulator framework as it is controlled by toggling |
| * pins on the PMIC such as PREQ, SYSEN, ... |
| */ |
| static int palmas_smps_init(struct palmas *palmas, int id, |
| struct palmas_reg_init *reg_init) |
| { |
| unsigned int reg; |
| unsigned int addr; |
| int ret; |
| |
| addr = palmas_regs_info[id].ctrl_addr; |
| |
| ret = palmas_smps_read(palmas, addr, ®); |
| if (ret) |
| return ret; |
| |
| switch (id) { |
| case PALMAS_REG_SMPS10_OUT1: |
| case PALMAS_REG_SMPS10_OUT2: |
| reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK; |
| if (reg_init->mode_sleep) |
| reg |= reg_init->mode_sleep << |
| PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT; |
| break; |
| default: |
| if (reg_init->warm_reset) |
| reg |= PALMAS_SMPS12_CTRL_WR_S; |
| else |
| reg &= ~PALMAS_SMPS12_CTRL_WR_S; |
| |
| if (reg_init->roof_floor) |
| reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN; |
| else |
| reg &= ~PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN; |
| |
| reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK; |
| if (reg_init->mode_sleep) |
| reg |= reg_init->mode_sleep << |
| PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT; |
| } |
| |
| ret = palmas_smps_write(palmas, addr, reg); |
| if (ret) |
| return ret; |
| |
| if (palmas_regs_info[id].vsel_addr && reg_init->vsel) { |
| addr = palmas_regs_info[id].vsel_addr; |
| |
| reg = reg_init->vsel; |
| |
| ret = palmas_smps_write(palmas, addr, reg); |
| if (ret) |
| return ret; |
| } |
| |
| if (reg_init->roof_floor && (id != PALMAS_REG_SMPS10_OUT1) && |
| (id != PALMAS_REG_SMPS10_OUT2)) { |
| /* Enable externally controlled regulator */ |
| addr = palmas_regs_info[id].ctrl_addr; |
| ret = palmas_smps_read(palmas, addr, ®); |
| if (ret < 0) |
| return ret; |
| |
| if (!(reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK)) { |
| reg |= SMPS_CTRL_MODE_ON; |
| ret = palmas_smps_write(palmas, addr, reg); |
| if (ret < 0) |
| return ret; |
| } |
| return palmas_regulator_config_external(palmas, id, reg_init); |
| } |
| return 0; |
| } |
| |
| static int palmas_ldo_init(struct palmas *palmas, int id, |
| struct palmas_reg_init *reg_init) |
| { |
| unsigned int reg; |
| unsigned int addr; |
| int ret; |
| |
| addr = palmas_regs_info[id].ctrl_addr; |
| |
| ret = palmas_ldo_read(palmas, addr, ®); |
| if (ret) |
| return ret; |
| |
| if (reg_init->warm_reset) |
| reg |= PALMAS_LDO1_CTRL_WR_S; |
| else |
| reg &= ~PALMAS_LDO1_CTRL_WR_S; |
| |
| if (reg_init->mode_sleep) |
| reg |= PALMAS_LDO1_CTRL_MODE_SLEEP; |
| else |
| reg &= ~PALMAS_LDO1_CTRL_MODE_SLEEP; |
| |
| ret = palmas_ldo_write(palmas, addr, reg); |
| if (ret) |
| return ret; |
| |
| if (reg_init->roof_floor) { |
| /* Enable externally controlled regulator */ |
| addr = palmas_regs_info[id].ctrl_addr; |
| ret = palmas_update_bits(palmas, PALMAS_LDO_BASE, |
| addr, PALMAS_LDO1_CTRL_MODE_ACTIVE, |
| PALMAS_LDO1_CTRL_MODE_ACTIVE); |
| if (ret < 0) { |
| dev_err(palmas->dev, |
| "LDO Register 0x%02x update failed %d\n", |
| addr, ret); |
| return ret; |
| } |
| return palmas_regulator_config_external(palmas, id, reg_init); |
| } |
| return 0; |
| } |
| |
| static int palmas_extreg_init(struct palmas *palmas, int id, |
| struct palmas_reg_init *reg_init) |
| { |
| unsigned int addr; |
| int ret; |
| unsigned int val = 0; |
| |
| addr = palmas_regs_info[id].ctrl_addr; |
| |
| if (reg_init->mode_sleep) |
| val = PALMAS_REGEN1_CTRL_MODE_SLEEP; |
| |
| ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE, |
| addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val); |
| if (ret < 0) { |
| dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n", |
| addr, ret); |
| return ret; |
| } |
| |
| if (reg_init->roof_floor) { |
| /* Enable externally controlled regulator */ |
| addr = palmas_regs_info[id].ctrl_addr; |
| ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE, |
| addr, PALMAS_REGEN1_CTRL_MODE_ACTIVE, |
| PALMAS_REGEN1_CTRL_MODE_ACTIVE); |
| if (ret < 0) { |
| dev_err(palmas->dev, |
| "Resource Register 0x%02x update failed %d\n", |
| addr, ret); |
| return ret; |
| } |
| return palmas_regulator_config_external(palmas, id, reg_init); |
| } |
| return 0; |
| } |
| |
| static void palmas_enable_ldo8_track(struct palmas *palmas) |
| { |
| unsigned int reg; |
| unsigned int addr; |
| int ret; |
| |
| addr = palmas_regs_info[PALMAS_REG_LDO8].ctrl_addr; |
| |
| ret = palmas_ldo_read(palmas, addr, ®); |
| if (ret) { |
| dev_err(palmas->dev, "Error in reading ldo8 control reg\n"); |
| return; |
| } |
| |
| reg |= PALMAS_LDO8_CTRL_LDO_TRACKING_EN; |
| ret = palmas_ldo_write(palmas, addr, reg); |
| if (ret < 0) { |
| dev_err(palmas->dev, "Error in enabling tracking mode\n"); |
| return; |
| } |
| /* |
| * When SMPS45 is set to off and LDO8 tracking is enabled, the LDO8 |
| * output is defined by the LDO8_VOLTAGE.VSEL register divided by two, |
| * and can be set from 0.45 to 1.65 V. |
| */ |
| addr = palmas_regs_info[PALMAS_REG_LDO8].vsel_addr; |
| ret = palmas_ldo_read(palmas, addr, ®); |
| if (ret) { |
| dev_err(palmas->dev, "Error in reading ldo8 voltage reg\n"); |
| return; |
| } |
| |
| reg = (reg << 1) & PALMAS_LDO8_VOLTAGE_VSEL_MASK; |
| ret = palmas_ldo_write(palmas, addr, reg); |
| if (ret < 0) |
| dev_err(palmas->dev, "Error in setting ldo8 voltage reg\n"); |
| |
| return; |
| } |
| |
| static struct of_regulator_match palmas_matches[] = { |
| { .name = "smps12", }, |
| { .name = "smps123", }, |
| { .name = "smps3", }, |
| { .name = "smps45", }, |
| { .name = "smps457", }, |
| { .name = "smps6", }, |
| { .name = "smps7", }, |
| { .name = "smps8", }, |
| { .name = "smps9", }, |
| { .name = "smps10_out2", }, |
| { .name = "smps10_out1", }, |
| { .name = "ldo1", }, |
| { .name = "ldo2", }, |
| { .name = "ldo3", }, |
| { .name = "ldo4", }, |
| { .name = "ldo5", }, |
| { .name = "ldo6", }, |
| { .name = "ldo7", }, |
| { .name = "ldo8", }, |
| { .name = "ldo9", }, |
| { .name = "ldoln", }, |
| { .name = "ldousb", }, |
| { .name = "regen1", }, |
| { .name = "regen2", }, |
| { .name = "regen3", }, |
| { .name = "sysen1", }, |
| { .name = "sysen2", }, |
| }; |
| |
| static void palmas_dt_to_pdata(struct device *dev, |
| struct device_node *node, |
| struct palmas_pmic_platform_data *pdata) |
| { |
| struct device_node *regulators; |
| u32 prop; |
| int idx, ret; |
| |
| node = of_node_get(node); |
| regulators = of_get_child_by_name(node, "regulators"); |
| if (!regulators) { |
| dev_info(dev, "regulator node not found\n"); |
| return; |
| } |
| |
| ret = of_regulator_match(dev, regulators, palmas_matches, |
| PALMAS_NUM_REGS); |
| of_node_put(regulators); |
| if (ret < 0) { |
| dev_err(dev, "Error parsing regulator init data: %d\n", ret); |
| return; |
| } |
| |
| for (idx = 0; idx < PALMAS_NUM_REGS; idx++) { |
| if (!palmas_matches[idx].init_data || |
| !palmas_matches[idx].of_node) |
| continue; |
| |
| pdata->reg_data[idx] = palmas_matches[idx].init_data; |
| |
| pdata->reg_init[idx] = devm_kzalloc(dev, |
| sizeof(struct palmas_reg_init), GFP_KERNEL); |
| |
| pdata->reg_init[idx]->warm_reset = |
| of_property_read_bool(palmas_matches[idx].of_node, |
| "ti,warm-reset"); |
| |
| ret = of_property_read_u32(palmas_matches[idx].of_node, |
| "ti,roof-floor", &prop); |
| /* EINVAL: Property not found */ |
| if (ret != -EINVAL) { |
| int econtrol; |
| |
| /* use default value, when no value is specified */ |
| econtrol = PALMAS_EXT_CONTROL_NSLEEP; |
| if (!ret) { |
| switch (prop) { |
| case 1: |
| econtrol = PALMAS_EXT_CONTROL_ENABLE1; |
| break; |
| case 2: |
| econtrol = PALMAS_EXT_CONTROL_ENABLE2; |
| break; |
| case 3: |
| econtrol = PALMAS_EXT_CONTROL_NSLEEP; |
| break; |
| default: |
| WARN_ON(1); |
| dev_warn(dev, |
| "%s: Invalid roof-floor option: %u\n", |
| palmas_matches[idx].name, prop); |
| break; |
| } |
| } |
| pdata->reg_init[idx]->roof_floor = econtrol; |
| } |
| |
| ret = of_property_read_u32(palmas_matches[idx].of_node, |
| "ti,mode-sleep", &prop); |
| if (!ret) |
| pdata->reg_init[idx]->mode_sleep = prop; |
| |
| ret = of_property_read_bool(palmas_matches[idx].of_node, |
| "ti,smps-range"); |
| if (ret) |
| pdata->reg_init[idx]->vsel = |
| PALMAS_SMPS12_VOLTAGE_RANGE; |
| |
| if (idx == PALMAS_REG_LDO8) |
| pdata->enable_ldo8_tracking = of_property_read_bool( |
| palmas_matches[idx].of_node, |
| "ti,enable-ldo8-tracking"); |
| } |
| |
| pdata->ldo6_vibrator = of_property_read_bool(node, "ti,ldo6-vibrator"); |
| } |
| |
| |
| static int palmas_regulators_probe(struct platform_device *pdev) |
| { |
| struct palmas *palmas = dev_get_drvdata(pdev->dev.parent); |
| struct palmas_pmic_platform_data *pdata = dev_get_platdata(&pdev->dev); |
| struct device_node *node = pdev->dev.of_node; |
| struct regulator_dev *rdev; |
| struct regulator_config config = { }; |
| struct palmas_pmic *pmic; |
| struct palmas_reg_init *reg_init; |
| int id = 0, ret; |
| unsigned int addr, reg; |
| |
| if (node && !pdata) { |
| pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
| |
| if (!pdata) |
| return -ENOMEM; |
| |
| palmas_dt_to_pdata(&pdev->dev, node, pdata); |
| } |
| |
| pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL); |
| if (!pmic) |
| return -ENOMEM; |
| |
| pmic->dev = &pdev->dev; |
| pmic->palmas = palmas; |
| palmas->pmic = pmic; |
| platform_set_drvdata(pdev, pmic); |
| |
| ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, ®); |
| if (ret) |
| return ret; |
| |
| if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN) |
| pmic->smps123 = 1; |
| |
| if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN) |
| pmic->smps457 = 1; |
| |
| config.regmap = palmas->regmap[REGULATOR_SLAVE]; |
| config.dev = &pdev->dev; |
| config.driver_data = pmic; |
| |
| for (id = 0; id < PALMAS_REG_LDO1; id++) { |
| bool ramp_delay_support = false; |
| |
| /* |
| * Miss out regulators which are not available due |
| * to slaving configurations. |
| */ |
| switch (id) { |
| case PALMAS_REG_SMPS12: |
| case PALMAS_REG_SMPS3: |
| if (pmic->smps123) |
| continue; |
| if (id == PALMAS_REG_SMPS12) |
| ramp_delay_support = true; |
| break; |
| case PALMAS_REG_SMPS123: |
| if (!pmic->smps123) |
| continue; |
| ramp_delay_support = true; |
| break; |
| case PALMAS_REG_SMPS45: |
| case PALMAS_REG_SMPS7: |
| if (pmic->smps457) |
| continue; |
| if (id == PALMAS_REG_SMPS45) |
| ramp_delay_support = true; |
| break; |
| case PALMAS_REG_SMPS457: |
| if (!pmic->smps457) |
| continue; |
| ramp_delay_support = true; |
| break; |
| case PALMAS_REG_SMPS10_OUT1: |
| case PALMAS_REG_SMPS10_OUT2: |
| if (!PALMAS_PMIC_HAS(palmas, SMPS10_BOOST)) |
| continue; |
| } |
| |
| if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8)) |
| ramp_delay_support = true; |
| |
| if (ramp_delay_support) { |
| addr = palmas_regs_info[id].tstep_addr; |
| ret = palmas_smps_read(pmic->palmas, addr, ®); |
| if (ret < 0) { |
| dev_err(&pdev->dev, |
| "reading TSTEP reg failed: %d\n", ret); |
| return ret; |
| } |
| pmic->desc[id].ramp_delay = |
| palmas_smps_ramp_delay[reg & 0x3]; |
| pmic->ramp_delay[id] = pmic->desc[id].ramp_delay; |
| } |
| |
| /* Initialise sleep/init values from platform data */ |
| if (pdata && pdata->reg_init[id]) { |
| reg_init = pdata->reg_init[id]; |
| ret = palmas_smps_init(palmas, id, reg_init); |
| if (ret) |
| return ret; |
| } else { |
| reg_init = NULL; |
| } |
| |
| /* Register the regulators */ |
| pmic->desc[id].name = palmas_regs_info[id].name; |
| pmic->desc[id].id = id; |
| |
| switch (id) { |
| case PALMAS_REG_SMPS10_OUT1: |
| case PALMAS_REG_SMPS10_OUT2: |
| pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES; |
| pmic->desc[id].ops = &palmas_ops_smps10; |
| pmic->desc[id].vsel_reg = |
| PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, |
| PALMAS_SMPS10_CTRL); |
| pmic->desc[id].vsel_mask = SMPS10_VSEL; |
| pmic->desc[id].enable_reg = |
| PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, |
| PALMAS_SMPS10_CTRL); |
| if (id == PALMAS_REG_SMPS10_OUT1) |
| pmic->desc[id].enable_mask = SMPS10_SWITCH_EN; |
| else |
| pmic->desc[id].enable_mask = SMPS10_BOOST_EN; |
| pmic->desc[id].bypass_reg = |
| PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, |
| PALMAS_SMPS10_CTRL); |
| pmic->desc[id].bypass_mask = SMPS10_BYPASS_EN; |
| pmic->desc[id].min_uV = 3750000; |
| pmic->desc[id].uV_step = 1250000; |
| break; |
| default: |
| /* |
| * Read and store the RANGE bit for later use |
| * This must be done before regulator is probed, |
| * otherwise we error in probe with unsupportable |
| * ranges. Read the current smps mode for later use. |
| */ |
| addr = palmas_regs_info[id].vsel_addr; |
| pmic->desc[id].n_linear_ranges = 3; |
| |
| ret = palmas_smps_read(pmic->palmas, addr, ®); |
| if (ret) |
| return ret; |
| if (reg & PALMAS_SMPS12_VOLTAGE_RANGE) |
| pmic->range[id] = 1; |
| if (pmic->range[id]) |
| pmic->desc[id].linear_ranges = smps_high_ranges; |
| else |
| pmic->desc[id].linear_ranges = smps_low_ranges; |
| |
| if (reg_init && reg_init->roof_floor) |
| pmic->desc[id].ops = |
| &palmas_ops_ext_control_smps; |
| else |
| pmic->desc[id].ops = &palmas_ops_smps; |
| pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES; |
| pmic->desc[id].vsel_reg = |
| PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, |
| palmas_regs_info[id].vsel_addr); |
| pmic->desc[id].vsel_mask = |
| PALMAS_SMPS12_VOLTAGE_VSEL_MASK; |
| |
| /* Read the smps mode for later use. */ |
| addr = palmas_regs_info[id].ctrl_addr; |
| ret = palmas_smps_read(pmic->palmas, addr, ®); |
| if (ret) |
| return ret; |
| pmic->current_reg_mode[id] = reg & |
| PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK; |
| } |
| |
| pmic->desc[id].type = REGULATOR_VOLTAGE; |
| pmic->desc[id].owner = THIS_MODULE; |
| |
| if (pdata) |
| config.init_data = pdata->reg_data[id]; |
| else |
| config.init_data = NULL; |
| |
| pmic->desc[id].supply_name = palmas_regs_info[id].sname; |
| config.of_node = palmas_matches[id].of_node; |
| |
| rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id], |
| &config); |
| if (IS_ERR(rdev)) { |
| dev_err(&pdev->dev, |
| "failed to register %s regulator\n", |
| pdev->name); |
| return PTR_ERR(rdev); |
| } |
| |
| /* Save regulator for cleanup */ |
| pmic->rdev[id] = rdev; |
| } |
| |
| /* Start this loop from the id left from previous loop */ |
| for (; id < PALMAS_NUM_REGS; id++) { |
| if (pdata && pdata->reg_init[id]) |
| reg_init = pdata->reg_init[id]; |
| else |
| reg_init = NULL; |
| |
| /* Miss out regulators which are not available due |
| * to alternate functions. |
| */ |
| |
| /* Register the regulators */ |
| pmic->desc[id].name = palmas_regs_info[id].name; |
| pmic->desc[id].id = id; |
| pmic->desc[id].type = REGULATOR_VOLTAGE; |
| pmic->desc[id].owner = THIS_MODULE; |
| |
| if (id < PALMAS_REG_REGEN1) { |
| pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES; |
| if (reg_init && reg_init->roof_floor) |
| pmic->desc[id].ops = |
| &palmas_ops_ext_control_ldo; |
| else |
| pmic->desc[id].ops = &palmas_ops_ldo; |
| pmic->desc[id].min_uV = 900000; |
| pmic->desc[id].uV_step = 50000; |
| pmic->desc[id].linear_min_sel = 1; |
| pmic->desc[id].enable_time = 500; |
| pmic->desc[id].vsel_reg = |
| PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, |
| palmas_regs_info[id].vsel_addr); |
| pmic->desc[id].vsel_mask = |
| PALMAS_LDO1_VOLTAGE_VSEL_MASK; |
| pmic->desc[id].enable_reg = |
| PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, |
| palmas_regs_info[id].ctrl_addr); |
| pmic->desc[id].enable_mask = |
| PALMAS_LDO1_CTRL_MODE_ACTIVE; |
| |
| /* Check if LDO8 is in tracking mode or not */ |
| if (pdata && (id == PALMAS_REG_LDO8) && |
| pdata->enable_ldo8_tracking) { |
| palmas_enable_ldo8_track(palmas); |
| pmic->desc[id].min_uV = 450000; |
| pmic->desc[id].uV_step = 25000; |
| } |
| |
| /* LOD6 in vibrator mode will have enable time 2000us */ |
| if (pdata && pdata->ldo6_vibrator && |
| (id == PALMAS_REG_LDO6)) |
| pmic->desc[id].enable_time = 2000; |
| } else { |
| pmic->desc[id].n_voltages = 1; |
| if (reg_init && reg_init->roof_floor) |
| pmic->desc[id].ops = |
| &palmas_ops_ext_control_extreg; |
| else |
| pmic->desc[id].ops = &palmas_ops_extreg; |
| pmic->desc[id].enable_reg = |
| PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE, |
| palmas_regs_info[id].ctrl_addr); |
| pmic->desc[id].enable_mask = |
| PALMAS_REGEN1_CTRL_MODE_ACTIVE; |
| } |
| |
| if (pdata) |
| config.init_data = pdata->reg_data[id]; |
| else |
| config.init_data = NULL; |
| |
| pmic->desc[id].supply_name = palmas_regs_info[id].sname; |
| config.of_node = palmas_matches[id].of_node; |
| |
| rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id], |
| &config); |
| if (IS_ERR(rdev)) { |
| dev_err(&pdev->dev, |
| "failed to register %s regulator\n", |
| pdev->name); |
| return PTR_ERR(rdev); |
| } |
| |
| /* Save regulator for cleanup */ |
| pmic->rdev[id] = rdev; |
| |
| /* Initialise sleep/init values from platform data */ |
| if (pdata) { |
| reg_init = pdata->reg_init[id]; |
| if (reg_init) { |
| if (id < PALMAS_REG_REGEN1) |
| ret = palmas_ldo_init(palmas, |
| id, reg_init); |
| else |
| ret = palmas_extreg_init(palmas, |
| id, reg_init); |
| if (ret) |
| return ret; |
| } |
| } |
| } |
| |
| |
| return 0; |
| } |
| |
| static const struct of_device_id of_palmas_match_tbl[] = { |
| { .compatible = "ti,palmas-pmic", }, |
| { .compatible = "ti,twl6035-pmic", }, |
| { .compatible = "ti,twl6036-pmic", }, |
| { .compatible = "ti,twl6037-pmic", }, |
| { .compatible = "ti,tps65913-pmic", }, |
| { .compatible = "ti,tps65914-pmic", }, |
| { .compatible = "ti,tps80036-pmic", }, |
| { .compatible = "ti,tps659038-pmic", }, |
| { /* end */ } |
| }; |
| |
| static struct platform_driver palmas_driver = { |
| .driver = { |
| .name = "palmas-pmic", |
| .of_match_table = of_palmas_match_tbl, |
| .owner = THIS_MODULE, |
| }, |
| .probe = palmas_regulators_probe, |
| }; |
| |
| static int __init palmas_init(void) |
| { |
| return platform_driver_register(&palmas_driver); |
| } |
| subsys_initcall(palmas_init); |
| |
| static void __exit palmas_exit(void) |
| { |
| platform_driver_unregister(&palmas_driver); |
| } |
| module_exit(palmas_exit); |
| |
| MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>"); |
| MODULE_DESCRIPTION("Palmas voltage regulator driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:palmas-pmic"); |
| MODULE_DEVICE_TABLE(of, of_palmas_match_tbl); |
