| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Maxim MAX77620 Regulator driver |
| * |
| * Copyright (c) 2016-2018, NVIDIA CORPORATION. All rights reserved. |
| * |
| * Author: Mallikarjun Kasoju <mkasoju@nvidia.com> |
| * Laxman Dewangan <ldewangan@nvidia.com> |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/mfd/max77620.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/platform_device.h> |
| #include <linux/regmap.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/regulator/of_regulator.h> |
| |
| #define max77620_rails(_name) "max77620-"#_name |
| |
| /* Power Mode */ |
| #define MAX77620_POWER_MODE_NORMAL 3 |
| #define MAX77620_POWER_MODE_LPM 2 |
| #define MAX77620_POWER_MODE_GLPM 1 |
| #define MAX77620_POWER_MODE_DISABLE 0 |
| |
| /* SD Slew Rate */ |
| #define MAX77620_SD_SR_13_75 0 |
| #define MAX77620_SD_SR_27_5 1 |
| #define MAX77620_SD_SR_55 2 |
| #define MAX77620_SD_SR_100 3 |
| |
| enum max77620_regulators { |
| MAX77620_REGULATOR_ID_SD0, |
| MAX77620_REGULATOR_ID_SD1, |
| MAX77620_REGULATOR_ID_SD2, |
| MAX77620_REGULATOR_ID_SD3, |
| MAX77620_REGULATOR_ID_SD4, |
| MAX77620_REGULATOR_ID_LDO0, |
| MAX77620_REGULATOR_ID_LDO1, |
| MAX77620_REGULATOR_ID_LDO2, |
| MAX77620_REGULATOR_ID_LDO3, |
| MAX77620_REGULATOR_ID_LDO4, |
| MAX77620_REGULATOR_ID_LDO5, |
| MAX77620_REGULATOR_ID_LDO6, |
| MAX77620_REGULATOR_ID_LDO7, |
| MAX77620_REGULATOR_ID_LDO8, |
| MAX77620_NUM_REGS, |
| }; |
| |
| /* Regulator types */ |
| enum max77620_regulator_type { |
| MAX77620_REGULATOR_TYPE_SD, |
| MAX77620_REGULATOR_TYPE_LDO_N, |
| MAX77620_REGULATOR_TYPE_LDO_P, |
| }; |
| |
| struct max77620_regulator_info { |
| u8 type; |
| u8 fps_addr; |
| u8 volt_addr; |
| u8 cfg_addr; |
| u8 power_mode_mask; |
| u8 power_mode_shift; |
| u8 remote_sense_addr; |
| u8 remote_sense_mask; |
| struct regulator_desc desc; |
| }; |
| |
| struct max77620_regulator_pdata { |
| int active_fps_src; |
| int active_fps_pd_slot; |
| int active_fps_pu_slot; |
| int suspend_fps_src; |
| int suspend_fps_pd_slot; |
| int suspend_fps_pu_slot; |
| int current_mode; |
| int power_ok; |
| int ramp_rate_setting; |
| }; |
| |
| struct max77620_regulator { |
| struct device *dev; |
| struct regmap *rmap; |
| struct max77620_regulator_info *rinfo[MAX77620_NUM_REGS]; |
| struct max77620_regulator_pdata reg_pdata[MAX77620_NUM_REGS]; |
| int enable_power_mode[MAX77620_NUM_REGS]; |
| int current_power_mode[MAX77620_NUM_REGS]; |
| int active_fps_src[MAX77620_NUM_REGS]; |
| }; |
| |
| #define fps_src_name(fps_src) \ |
| (fps_src == MAX77620_FPS_SRC_0 ? "FPS_SRC_0" : \ |
| fps_src == MAX77620_FPS_SRC_1 ? "FPS_SRC_1" : \ |
| fps_src == MAX77620_FPS_SRC_2 ? "FPS_SRC_2" : "FPS_SRC_NONE") |
| |
| static int max77620_regulator_get_fps_src(struct max77620_regulator *pmic, |
| int id) |
| { |
| struct max77620_regulator_info *rinfo = pmic->rinfo[id]; |
| unsigned int val; |
| int ret; |
| |
| ret = regmap_read(pmic->rmap, rinfo->fps_addr, &val); |
| if (ret < 0) { |
| dev_err(pmic->dev, "Reg 0x%02x read failed %d\n", |
| rinfo->fps_addr, ret); |
| return ret; |
| } |
| |
| return (val & MAX77620_FPS_SRC_MASK) >> MAX77620_FPS_SRC_SHIFT; |
| } |
| |
| static int max77620_regulator_set_fps_src(struct max77620_regulator *pmic, |
| int fps_src, int id) |
| { |
| struct max77620_regulator_info *rinfo = pmic->rinfo[id]; |
| unsigned int val; |
| int ret; |
| |
| if (!rinfo) |
| return 0; |
| |
| switch (fps_src) { |
| case MAX77620_FPS_SRC_0: |
| case MAX77620_FPS_SRC_1: |
| case MAX77620_FPS_SRC_2: |
| case MAX77620_FPS_SRC_NONE: |
| break; |
| |
| case MAX77620_FPS_SRC_DEF: |
| ret = regmap_read(pmic->rmap, rinfo->fps_addr, &val); |
| if (ret < 0) { |
| dev_err(pmic->dev, "Reg 0x%02x read failed %d\n", |
| rinfo->fps_addr, ret); |
| return ret; |
| } |
| ret = (val & MAX77620_FPS_SRC_MASK) >> MAX77620_FPS_SRC_SHIFT; |
| pmic->active_fps_src[id] = ret; |
| return 0; |
| |
| default: |
| dev_err(pmic->dev, "Invalid FPS %d for regulator %d\n", |
| fps_src, id); |
| return -EINVAL; |
| } |
| |
| ret = regmap_update_bits(pmic->rmap, rinfo->fps_addr, |
| MAX77620_FPS_SRC_MASK, |
| fps_src << MAX77620_FPS_SRC_SHIFT); |
| if (ret < 0) { |
| dev_err(pmic->dev, "Reg 0x%02x update failed %d\n", |
| rinfo->fps_addr, ret); |
| return ret; |
| } |
| pmic->active_fps_src[id] = fps_src; |
| |
| return 0; |
| } |
| |
| static int max77620_regulator_set_fps_slots(struct max77620_regulator *pmic, |
| int id, bool is_suspend) |
| { |
| struct max77620_regulator_pdata *rpdata = &pmic->reg_pdata[id]; |
| struct max77620_regulator_info *rinfo = pmic->rinfo[id]; |
| unsigned int val = 0; |
| unsigned int mask = 0; |
| int pu = rpdata->active_fps_pu_slot; |
| int pd = rpdata->active_fps_pd_slot; |
| int ret = 0; |
| |
| if (!rinfo) |
| return 0; |
| |
| if (is_suspend) { |
| pu = rpdata->suspend_fps_pu_slot; |
| pd = rpdata->suspend_fps_pd_slot; |
| } |
| |
| /* FPS power up period setting */ |
| if (pu >= 0) { |
| val |= (pu << MAX77620_FPS_PU_PERIOD_SHIFT); |
| mask |= MAX77620_FPS_PU_PERIOD_MASK; |
| } |
| |
| /* FPS power down period setting */ |
| if (pd >= 0) { |
| val |= (pd << MAX77620_FPS_PD_PERIOD_SHIFT); |
| mask |= MAX77620_FPS_PD_PERIOD_MASK; |
| } |
| |
| if (mask) { |
| ret = regmap_update_bits(pmic->rmap, rinfo->fps_addr, |
| mask, val); |
| if (ret < 0) { |
| dev_err(pmic->dev, "Reg 0x%02x update failed: %d\n", |
| rinfo->fps_addr, ret); |
| return ret; |
| } |
| } |
| |
| return ret; |
| } |
| |
| static int max77620_regulator_set_power_mode(struct max77620_regulator *pmic, |
| int power_mode, int id) |
| { |
| struct max77620_regulator_info *rinfo = pmic->rinfo[id]; |
| u8 mask = rinfo->power_mode_mask; |
| u8 shift = rinfo->power_mode_shift; |
| u8 addr; |
| int ret; |
| |
| switch (rinfo->type) { |
| case MAX77620_REGULATOR_TYPE_SD: |
| addr = rinfo->cfg_addr; |
| break; |
| default: |
| addr = rinfo->volt_addr; |
| break; |
| } |
| |
| ret = regmap_update_bits(pmic->rmap, addr, mask, power_mode << shift); |
| if (ret < 0) { |
| dev_err(pmic->dev, "Regulator %d mode set failed: %d\n", |
| id, ret); |
| return ret; |
| } |
| pmic->current_power_mode[id] = power_mode; |
| |
| return ret; |
| } |
| |
| static int max77620_regulator_get_power_mode(struct max77620_regulator *pmic, |
| int id) |
| { |
| struct max77620_regulator_info *rinfo = pmic->rinfo[id]; |
| unsigned int val, addr; |
| u8 mask = rinfo->power_mode_mask; |
| u8 shift = rinfo->power_mode_shift; |
| int ret; |
| |
| switch (rinfo->type) { |
| case MAX77620_REGULATOR_TYPE_SD: |
| addr = rinfo->cfg_addr; |
| break; |
| default: |
| addr = rinfo->volt_addr; |
| break; |
| } |
| |
| ret = regmap_read(pmic->rmap, addr, &val); |
| if (ret < 0) { |
| dev_err(pmic->dev, "Regulator %d: Reg 0x%02x read failed: %d\n", |
| id, addr, ret); |
| return ret; |
| } |
| |
| return (val & mask) >> shift; |
| } |
| |
| static int max77620_read_slew_rate(struct max77620_regulator *pmic, int id) |
| { |
| struct max77620_regulator_info *rinfo = pmic->rinfo[id]; |
| unsigned int rval; |
| int slew_rate; |
| int ret; |
| |
| ret = regmap_read(pmic->rmap, rinfo->cfg_addr, &rval); |
| if (ret < 0) { |
| dev_err(pmic->dev, "Register 0x%02x read failed: %d\n", |
| rinfo->cfg_addr, ret); |
| return ret; |
| } |
| |
| switch (rinfo->type) { |
| case MAX77620_REGULATOR_TYPE_SD: |
| slew_rate = (rval >> MAX77620_SD_SR_SHIFT) & 0x3; |
| switch (slew_rate) { |
| case 0: |
| slew_rate = 13750; |
| break; |
| case 1: |
| slew_rate = 27500; |
| break; |
| case 2: |
| slew_rate = 55000; |
| break; |
| case 3: |
| slew_rate = 100000; |
| break; |
| } |
| rinfo->desc.ramp_delay = slew_rate; |
| break; |
| default: |
| slew_rate = rval & 0x1; |
| switch (slew_rate) { |
| case 0: |
| slew_rate = 100000; |
| break; |
| case 1: |
| slew_rate = 5000; |
| break; |
| } |
| rinfo->desc.ramp_delay = slew_rate; |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int max77620_set_slew_rate(struct max77620_regulator *pmic, int id, |
| int slew_rate) |
| { |
| struct max77620_regulator_info *rinfo = pmic->rinfo[id]; |
| unsigned int val; |
| int ret; |
| u8 mask; |
| |
| if (rinfo->type == MAX77620_REGULATOR_TYPE_SD) { |
| if (slew_rate <= 13750) |
| val = 0; |
| else if (slew_rate <= 27500) |
| val = 1; |
| else if (slew_rate <= 55000) |
| val = 2; |
| else |
| val = 3; |
| val <<= MAX77620_SD_SR_SHIFT; |
| mask = MAX77620_SD_SR_MASK; |
| } else { |
| if (slew_rate <= 5000) |
| val = 1; |
| else |
| val = 0; |
| mask = MAX77620_LDO_SLEW_RATE_MASK; |
| } |
| |
| ret = regmap_update_bits(pmic->rmap, rinfo->cfg_addr, mask, val); |
| if (ret < 0) { |
| dev_err(pmic->dev, "Regulator %d slew rate set failed: %d\n", |
| id, ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int max77620_config_power_ok(struct max77620_regulator *pmic, int id) |
| { |
| struct max77620_regulator_pdata *rpdata = &pmic->reg_pdata[id]; |
| struct max77620_regulator_info *rinfo = pmic->rinfo[id]; |
| struct max77620_chip *chip = dev_get_drvdata(pmic->dev->parent); |
| u8 val, mask; |
| int ret; |
| |
| switch (chip->chip_id) { |
| case MAX20024: |
| if (rpdata->power_ok >= 0) { |
| if (rinfo->type == MAX77620_REGULATOR_TYPE_SD) |
| mask = MAX20024_SD_CFG1_MPOK_MASK; |
| else |
| mask = MAX20024_LDO_CFG2_MPOK_MASK; |
| |
| val = rpdata->power_ok ? mask : 0; |
| |
| ret = regmap_update_bits(pmic->rmap, rinfo->cfg_addr, |
| mask, val); |
| if (ret < 0) { |
| dev_err(pmic->dev, "Reg 0x%02x update failed %d\n", |
| rinfo->cfg_addr, ret); |
| return ret; |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int max77620_init_pmic(struct max77620_regulator *pmic, int id) |
| { |
| struct max77620_regulator_pdata *rpdata = &pmic->reg_pdata[id]; |
| int ret; |
| |
| max77620_config_power_ok(pmic, id); |
| |
| /* Update power mode */ |
| ret = max77620_regulator_get_power_mode(pmic, id); |
| if (ret < 0) |
| return ret; |
| |
| pmic->current_power_mode[id] = ret; |
| pmic->enable_power_mode[id] = MAX77620_POWER_MODE_NORMAL; |
| |
| if (rpdata->active_fps_src == MAX77620_FPS_SRC_DEF) { |
| ret = max77620_regulator_get_fps_src(pmic, id); |
| if (ret < 0) |
| return ret; |
| rpdata->active_fps_src = ret; |
| } |
| |
| /* If rails are externally control of FPS then enable it always. */ |
| if (rpdata->active_fps_src == MAX77620_FPS_SRC_NONE) { |
| ret = max77620_regulator_set_power_mode(pmic, |
| pmic->enable_power_mode[id], id); |
| if (ret < 0) |
| return ret; |
| } else { |
| if (pmic->current_power_mode[id] != |
| pmic->enable_power_mode[id]) { |
| ret = max77620_regulator_set_power_mode(pmic, |
| pmic->enable_power_mode[id], id); |
| if (ret < 0) |
| return ret; |
| } |
| } |
| |
| ret = max77620_regulator_set_fps_src(pmic, rpdata->active_fps_src, id); |
| if (ret < 0) |
| return ret; |
| |
| ret = max77620_regulator_set_fps_slots(pmic, id, false); |
| if (ret < 0) |
| return ret; |
| |
| if (rpdata->ramp_rate_setting) { |
| ret = max77620_set_slew_rate(pmic, id, |
| rpdata->ramp_rate_setting); |
| if (ret < 0) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int max77620_regulator_enable(struct regulator_dev *rdev) |
| { |
| struct max77620_regulator *pmic = rdev_get_drvdata(rdev); |
| int id = rdev_get_id(rdev); |
| |
| if (pmic->active_fps_src[id] != MAX77620_FPS_SRC_NONE) |
| return 0; |
| |
| return max77620_regulator_set_power_mode(pmic, |
| pmic->enable_power_mode[id], id); |
| } |
| |
| static int max77620_regulator_disable(struct regulator_dev *rdev) |
| { |
| struct max77620_regulator *pmic = rdev_get_drvdata(rdev); |
| int id = rdev_get_id(rdev); |
| |
| if (pmic->active_fps_src[id] != MAX77620_FPS_SRC_NONE) |
| return 0; |
| |
| return max77620_regulator_set_power_mode(pmic, |
| MAX77620_POWER_MODE_DISABLE, id); |
| } |
| |
| static int max77620_regulator_is_enabled(struct regulator_dev *rdev) |
| { |
| struct max77620_regulator *pmic = rdev_get_drvdata(rdev); |
| int id = rdev_get_id(rdev); |
| int ret; |
| |
| if (pmic->active_fps_src[id] != MAX77620_FPS_SRC_NONE) |
| return 1; |
| |
| ret = max77620_regulator_get_power_mode(pmic, id); |
| if (ret < 0) |
| return ret; |
| |
| if (ret != MAX77620_POWER_MODE_DISABLE) |
| return 1; |
| |
| return 0; |
| } |
| |
| static int max77620_regulator_set_mode(struct regulator_dev *rdev, |
| unsigned int mode) |
| { |
| struct max77620_regulator *pmic = rdev_get_drvdata(rdev); |
| int id = rdev_get_id(rdev); |
| struct max77620_regulator_info *rinfo = pmic->rinfo[id]; |
| struct max77620_regulator_pdata *rpdata = &pmic->reg_pdata[id]; |
| bool fpwm = false; |
| int power_mode; |
| int ret; |
| u8 val; |
| |
| switch (mode) { |
| case REGULATOR_MODE_FAST: |
| fpwm = true; |
| power_mode = MAX77620_POWER_MODE_NORMAL; |
| break; |
| |
| case REGULATOR_MODE_NORMAL: |
| power_mode = MAX77620_POWER_MODE_NORMAL; |
| break; |
| |
| case REGULATOR_MODE_IDLE: |
| power_mode = MAX77620_POWER_MODE_LPM; |
| break; |
| |
| default: |
| dev_err(pmic->dev, "Regulator %d mode %d is invalid\n", |
| id, mode); |
| return -EINVAL; |
| } |
| |
| if (rinfo->type != MAX77620_REGULATOR_TYPE_SD) |
| goto skip_fpwm; |
| |
| val = (fpwm) ? MAX77620_SD_FPWM_MASK : 0; |
| ret = regmap_update_bits(pmic->rmap, rinfo->cfg_addr, |
| MAX77620_SD_FPWM_MASK, val); |
| if (ret < 0) { |
| dev_err(pmic->dev, "Reg 0x%02x update failed: %d\n", |
| rinfo->cfg_addr, ret); |
| return ret; |
| } |
| rpdata->current_mode = mode; |
| |
| skip_fpwm: |
| ret = max77620_regulator_set_power_mode(pmic, power_mode, id); |
| if (ret < 0) |
| return ret; |
| |
| pmic->enable_power_mode[id] = power_mode; |
| |
| return 0; |
| } |
| |
| static unsigned int max77620_regulator_get_mode(struct regulator_dev *rdev) |
| { |
| struct max77620_regulator *pmic = rdev_get_drvdata(rdev); |
| int id = rdev_get_id(rdev); |
| struct max77620_regulator_info *rinfo = pmic->rinfo[id]; |
| int fpwm = 0; |
| int ret; |
| int pm_mode, reg_mode; |
| unsigned int val; |
| |
| ret = max77620_regulator_get_power_mode(pmic, id); |
| if (ret < 0) |
| return 0; |
| |
| pm_mode = ret; |
| |
| if (rinfo->type == MAX77620_REGULATOR_TYPE_SD) { |
| ret = regmap_read(pmic->rmap, rinfo->cfg_addr, &val); |
| if (ret < 0) { |
| dev_err(pmic->dev, "Reg 0x%02x read failed: %d\n", |
| rinfo->cfg_addr, ret); |
| return ret; |
| } |
| fpwm = !!(val & MAX77620_SD_FPWM_MASK); |
| } |
| |
| switch (pm_mode) { |
| case MAX77620_POWER_MODE_NORMAL: |
| case MAX77620_POWER_MODE_DISABLE: |
| if (fpwm) |
| reg_mode = REGULATOR_MODE_FAST; |
| else |
| reg_mode = REGULATOR_MODE_NORMAL; |
| break; |
| case MAX77620_POWER_MODE_LPM: |
| case MAX77620_POWER_MODE_GLPM: |
| reg_mode = REGULATOR_MODE_IDLE; |
| break; |
| default: |
| return 0; |
| } |
| |
| return reg_mode; |
| } |
| |
| static int max77620_regulator_set_ramp_delay(struct regulator_dev *rdev, |
| int ramp_delay) |
| { |
| struct max77620_regulator *pmic = rdev_get_drvdata(rdev); |
| int id = rdev_get_id(rdev); |
| struct max77620_regulator_pdata *rpdata = &pmic->reg_pdata[id]; |
| |
| /* Device specific ramp rate setting tells that platform has |
| * different ramp rate from advertised value. In this case, |
| * do not configure anything and just return success. |
| */ |
| if (rpdata->ramp_rate_setting) |
| return 0; |
| |
| return max77620_set_slew_rate(pmic, id, ramp_delay); |
| } |
| |
| static int max77620_of_parse_cb(struct device_node *np, |
| const struct regulator_desc *desc, |
| struct regulator_config *config) |
| { |
| struct max77620_regulator *pmic = config->driver_data; |
| struct max77620_regulator_pdata *rpdata = &pmic->reg_pdata[desc->id]; |
| u32 pval; |
| int ret; |
| |
| ret = of_property_read_u32(np, "maxim,active-fps-source", &pval); |
| rpdata->active_fps_src = (!ret) ? pval : MAX77620_FPS_SRC_DEF; |
| |
| ret = of_property_read_u32(np, "maxim,active-fps-power-up-slot", &pval); |
| rpdata->active_fps_pu_slot = (!ret) ? pval : -1; |
| |
| ret = of_property_read_u32( |
| np, "maxim,active-fps-power-down-slot", &pval); |
| rpdata->active_fps_pd_slot = (!ret) ? pval : -1; |
| |
| ret = of_property_read_u32(np, "maxim,suspend-fps-source", &pval); |
| rpdata->suspend_fps_src = (!ret) ? pval : -1; |
| |
| ret = of_property_read_u32( |
| np, "maxim,suspend-fps-power-up-slot", &pval); |
| rpdata->suspend_fps_pu_slot = (!ret) ? pval : -1; |
| |
| ret = of_property_read_u32( |
| np, "maxim,suspend-fps-power-down-slot", &pval); |
| rpdata->suspend_fps_pd_slot = (!ret) ? pval : -1; |
| |
| ret = of_property_read_u32(np, "maxim,power-ok-control", &pval); |
| if (!ret) |
| rpdata->power_ok = pval; |
| else |
| rpdata->power_ok = -1; |
| |
| ret = of_property_read_u32(np, "maxim,ramp-rate-setting", &pval); |
| rpdata->ramp_rate_setting = (!ret) ? pval : 0; |
| |
| return max77620_init_pmic(pmic, desc->id); |
| } |
| |
| static const struct regulator_ops max77620_regulator_ops = { |
| .is_enabled = max77620_regulator_is_enabled, |
| .enable = max77620_regulator_enable, |
| .disable = max77620_regulator_disable, |
| .list_voltage = regulator_list_voltage_linear, |
| .map_voltage = regulator_map_voltage_linear, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .set_mode = max77620_regulator_set_mode, |
| .get_mode = max77620_regulator_get_mode, |
| .set_ramp_delay = max77620_regulator_set_ramp_delay, |
| .set_voltage_time_sel = regulator_set_voltage_time_sel, |
| .set_active_discharge = regulator_set_active_discharge_regmap, |
| }; |
| |
| #define MAX77620_SD_CNF2_ROVS_EN_NONE 0 |
| #define RAIL_SD(_id, _name, _sname, _volt_mask, _min_uV, _max_uV, \ |
| _step_uV, _rs_add, _rs_mask) \ |
| [MAX77620_REGULATOR_ID_##_id] = { \ |
| .type = MAX77620_REGULATOR_TYPE_SD, \ |
| .volt_addr = MAX77620_REG_##_id, \ |
| .cfg_addr = MAX77620_REG_##_id##_CFG, \ |
| .fps_addr = MAX77620_REG_FPS_##_id, \ |
| .remote_sense_addr = _rs_add, \ |
| .remote_sense_mask = MAX77620_SD_CNF2_ROVS_EN_##_rs_mask, \ |
| .power_mode_mask = MAX77620_SD_POWER_MODE_MASK, \ |
| .power_mode_shift = MAX77620_SD_POWER_MODE_SHIFT, \ |
| .desc = { \ |
| .name = max77620_rails(_name), \ |
| .of_match = of_match_ptr(#_name), \ |
| .regulators_node = of_match_ptr("regulators"), \ |
| .of_parse_cb = max77620_of_parse_cb, \ |
| .supply_name = _sname, \ |
| .id = MAX77620_REGULATOR_ID_##_id, \ |
| .ops = &max77620_regulator_ops, \ |
| .n_voltages = ((_max_uV - _min_uV) / _step_uV) + 1, \ |
| .min_uV = _min_uV, \ |
| .uV_step = _step_uV, \ |
| .enable_time = 500, \ |
| .vsel_mask = MAX77620_##_volt_mask##_VOLT_MASK, \ |
| .vsel_reg = MAX77620_REG_##_id, \ |
| .active_discharge_off = 0, \ |
| .active_discharge_on = MAX77620_SD_CFG1_ADE_ENABLE, \ |
| .active_discharge_mask = MAX77620_SD_CFG1_ADE_MASK, \ |
| .active_discharge_reg = MAX77620_REG_##_id##_CFG, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .owner = THIS_MODULE, \ |
| }, \ |
| } |
| |
| #define RAIL_LDO(_id, _name, _sname, _type, _min_uV, _max_uV, _step_uV) \ |
| [MAX77620_REGULATOR_ID_##_id] = { \ |
| .type = MAX77620_REGULATOR_TYPE_LDO_##_type, \ |
| .volt_addr = MAX77620_REG_##_id##_CFG, \ |
| .cfg_addr = MAX77620_REG_##_id##_CFG2, \ |
| .fps_addr = MAX77620_REG_FPS_##_id, \ |
| .remote_sense_addr = 0xFF, \ |
| .power_mode_mask = MAX77620_LDO_POWER_MODE_MASK, \ |
| .power_mode_shift = MAX77620_LDO_POWER_MODE_SHIFT, \ |
| .desc = { \ |
| .name = max77620_rails(_name), \ |
| .of_match = of_match_ptr(#_name), \ |
| .regulators_node = of_match_ptr("regulators"), \ |
| .of_parse_cb = max77620_of_parse_cb, \ |
| .supply_name = _sname, \ |
| .id = MAX77620_REGULATOR_ID_##_id, \ |
| .ops = &max77620_regulator_ops, \ |
| .n_voltages = ((_max_uV - _min_uV) / _step_uV) + 1, \ |
| .min_uV = _min_uV, \ |
| .uV_step = _step_uV, \ |
| .enable_time = 500, \ |
| .vsel_mask = MAX77620_LDO_VOLT_MASK, \ |
| .vsel_reg = MAX77620_REG_##_id##_CFG, \ |
| .active_discharge_off = 0, \ |
| .active_discharge_on = MAX77620_LDO_CFG2_ADE_ENABLE, \ |
| .active_discharge_mask = MAX77620_LDO_CFG2_ADE_MASK, \ |
| .active_discharge_reg = MAX77620_REG_##_id##_CFG2, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .owner = THIS_MODULE, \ |
| }, \ |
| } |
| |
| static struct max77620_regulator_info max77620_regs_info[MAX77620_NUM_REGS] = { |
| RAIL_SD(SD0, sd0, "in-sd0", SD0, 600000, 1400000, 12500, 0x22, SD0), |
| RAIL_SD(SD1, sd1, "in-sd1", SD1, 600000, 1550000, 12500, 0x22, SD1), |
| RAIL_SD(SD2, sd2, "in-sd2", SDX, 600000, 3787500, 12500, 0xFF, NONE), |
| RAIL_SD(SD3, sd3, "in-sd3", SDX, 600000, 3787500, 12500, 0xFF, NONE), |
| |
| RAIL_LDO(LDO0, ldo0, "in-ldo0-1", N, 800000, 2375000, 25000), |
| RAIL_LDO(LDO1, ldo1, "in-ldo0-1", N, 800000, 2375000, 25000), |
| RAIL_LDO(LDO2, ldo2, "in-ldo2", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO3, ldo3, "in-ldo3-5", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO4, ldo4, "in-ldo4-6", P, 800000, 1587500, 12500), |
| RAIL_LDO(LDO5, ldo5, "in-ldo3-5", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO6, ldo6, "in-ldo4-6", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO7, ldo7, "in-ldo7-8", N, 800000, 3950000, 50000), |
| RAIL_LDO(LDO8, ldo8, "in-ldo7-8", N, 800000, 3950000, 50000), |
| }; |
| |
| static struct max77620_regulator_info max20024_regs_info[MAX77620_NUM_REGS] = { |
| RAIL_SD(SD0, sd0, "in-sd0", SD0, 800000, 1587500, 12500, 0x22, SD0), |
| RAIL_SD(SD1, sd1, "in-sd1", SD1, 600000, 3387500, 12500, 0x22, SD1), |
| RAIL_SD(SD2, sd2, "in-sd2", SDX, 600000, 3787500, 12500, 0xFF, NONE), |
| RAIL_SD(SD3, sd3, "in-sd3", SDX, 600000, 3787500, 12500, 0xFF, NONE), |
| RAIL_SD(SD4, sd4, "in-sd4", SDX, 600000, 3787500, 12500, 0xFF, NONE), |
| |
| RAIL_LDO(LDO0, ldo0, "in-ldo0-1", N, 800000, 2375000, 25000), |
| RAIL_LDO(LDO1, ldo1, "in-ldo0-1", N, 800000, 2375000, 25000), |
| RAIL_LDO(LDO2, ldo2, "in-ldo2", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO3, ldo3, "in-ldo3-5", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO4, ldo4, "in-ldo4-6", P, 800000, 1587500, 12500), |
| RAIL_LDO(LDO5, ldo5, "in-ldo3-5", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO6, ldo6, "in-ldo4-6", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO7, ldo7, "in-ldo7-8", N, 800000, 3950000, 50000), |
| RAIL_LDO(LDO8, ldo8, "in-ldo7-8", N, 800000, 3950000, 50000), |
| }; |
| |
| static struct max77620_regulator_info max77663_regs_info[MAX77620_NUM_REGS] = { |
| RAIL_SD(SD0, sd0, "in-sd0", SD0, 600000, 3387500, 12500, 0xFF, NONE), |
| RAIL_SD(SD1, sd1, "in-sd1", SD1, 800000, 1587500, 12500, 0xFF, NONE), |
| RAIL_SD(SD2, sd2, "in-sd2", SDX, 600000, 3787500, 12500, 0xFF, NONE), |
| RAIL_SD(SD3, sd3, "in-sd3", SDX, 600000, 3787500, 12500, 0xFF, NONE), |
| RAIL_SD(SD4, sd4, "in-sd4", SDX, 600000, 3787500, 12500, 0xFF, NONE), |
| |
| RAIL_LDO(LDO0, ldo0, "in-ldo0-1", N, 800000, 2375000, 25000), |
| RAIL_LDO(LDO1, ldo1, "in-ldo0-1", N, 800000, 2375000, 25000), |
| RAIL_LDO(LDO2, ldo2, "in-ldo2", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO3, ldo3, "in-ldo3-5", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO4, ldo4, "in-ldo4-6", P, 800000, 1587500, 12500), |
| RAIL_LDO(LDO5, ldo5, "in-ldo3-5", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO6, ldo6, "in-ldo4-6", P, 800000, 3950000, 50000), |
| RAIL_LDO(LDO7, ldo7, "in-ldo7-8", N, 800000, 3950000, 50000), |
| RAIL_LDO(LDO8, ldo8, "in-ldo7-8", N, 800000, 3950000, 50000), |
| }; |
| |
| static int max77620_regulator_probe(struct platform_device *pdev) |
| { |
| struct max77620_chip *max77620_chip = dev_get_drvdata(pdev->dev.parent); |
| struct max77620_regulator_info *rinfo; |
| struct device *dev = &pdev->dev; |
| struct regulator_config config = { }; |
| struct max77620_regulator *pmic; |
| int ret = 0; |
| int id; |
| |
| pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL); |
| if (!pmic) |
| return -ENOMEM; |
| |
| platform_set_drvdata(pdev, pmic); |
| pmic->dev = dev; |
| pmic->rmap = max77620_chip->rmap; |
| if (!dev->of_node) |
| dev->of_node = pdev->dev.parent->of_node; |
| |
| switch (max77620_chip->chip_id) { |
| case MAX77620: |
| rinfo = max77620_regs_info; |
| break; |
| case MAX20024: |
| rinfo = max20024_regs_info; |
| break; |
| case MAX77663: |
| rinfo = max77663_regs_info; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| config.regmap = pmic->rmap; |
| config.dev = dev; |
| config.driver_data = pmic; |
| |
| /* |
| * Set of_node_reuse flag to prevent driver core from attempting to |
| * claim any pinmux resources already claimed by the parent device. |
| * Otherwise PMIC driver will fail to re-probe. |
| */ |
| device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent); |
| |
| for (id = 0; id < MAX77620_NUM_REGS; id++) { |
| struct regulator_dev *rdev; |
| struct regulator_desc *rdesc; |
| |
| if ((max77620_chip->chip_id == MAX77620) && |
| (id == MAX77620_REGULATOR_ID_SD4)) |
| continue; |
| |
| rdesc = &rinfo[id].desc; |
| pmic->rinfo[id] = &rinfo[id]; |
| pmic->enable_power_mode[id] = MAX77620_POWER_MODE_NORMAL; |
| pmic->reg_pdata[id].active_fps_src = -1; |
| pmic->reg_pdata[id].active_fps_pd_slot = -1; |
| pmic->reg_pdata[id].active_fps_pu_slot = -1; |
| pmic->reg_pdata[id].suspend_fps_src = -1; |
| pmic->reg_pdata[id].suspend_fps_pd_slot = -1; |
| pmic->reg_pdata[id].suspend_fps_pu_slot = -1; |
| pmic->reg_pdata[id].power_ok = -1; |
| pmic->reg_pdata[id].ramp_rate_setting = -1; |
| |
| ret = max77620_read_slew_rate(pmic, id); |
| if (ret < 0) |
| return ret; |
| |
| rdev = devm_regulator_register(dev, rdesc, &config); |
| if (IS_ERR(rdev)) { |
| ret = PTR_ERR(rdev); |
| dev_err(dev, "Regulator registration %s failed: %d\n", |
| rdesc->name, ret); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int max77620_regulator_suspend(struct device *dev) |
| { |
| struct max77620_regulator *pmic = dev_get_drvdata(dev); |
| struct max77620_regulator_pdata *reg_pdata; |
| int id; |
| |
| for (id = 0; id < MAX77620_NUM_REGS; id++) { |
| reg_pdata = &pmic->reg_pdata[id]; |
| |
| max77620_regulator_set_fps_slots(pmic, id, true); |
| if (reg_pdata->suspend_fps_src < 0) |
| continue; |
| |
| max77620_regulator_set_fps_src(pmic, reg_pdata->suspend_fps_src, |
| id); |
| } |
| |
| return 0; |
| } |
| |
| static int max77620_regulator_resume(struct device *dev) |
| { |
| struct max77620_regulator *pmic = dev_get_drvdata(dev); |
| struct max77620_regulator_pdata *reg_pdata; |
| int id; |
| |
| for (id = 0; id < MAX77620_NUM_REGS; id++) { |
| reg_pdata = &pmic->reg_pdata[id]; |
| |
| max77620_config_power_ok(pmic, id); |
| |
| max77620_regulator_set_fps_slots(pmic, id, false); |
| if (reg_pdata->active_fps_src < 0) |
| continue; |
| max77620_regulator_set_fps_src(pmic, reg_pdata->active_fps_src, |
| id); |
| } |
| |
| return 0; |
| } |
| #endif |
| |
| static const struct dev_pm_ops max77620_regulator_pm_ops = { |
| SET_SYSTEM_SLEEP_PM_OPS(max77620_regulator_suspend, |
| max77620_regulator_resume) |
| }; |
| |
| static const struct platform_device_id max77620_regulator_devtype[] = { |
| { .name = "max77620-pmic", }, |
| { .name = "max20024-pmic", }, |
| { .name = "max77663-pmic", }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(platform, max77620_regulator_devtype); |
| |
| static struct platform_driver max77620_regulator_driver = { |
| .probe = max77620_regulator_probe, |
| .id_table = max77620_regulator_devtype, |
| .driver = { |
| .name = "max77620-pmic", |
| .pm = &max77620_regulator_pm_ops, |
| }, |
| }; |
| |
| module_platform_driver(max77620_regulator_driver); |
| |
| MODULE_DESCRIPTION("MAX77620/MAX20024 regulator driver"); |
| MODULE_AUTHOR("Mallikarjun Kasoju <mkasoju@nvidia.com>"); |
| MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>"); |
| MODULE_LICENSE("GPL v2"); |
