/* * Maxim MAX77620 Regulator driver * * Copyright (c) 2016-2019, NVIDIA CORPORATION. All rights reserved. * * Author: Mallikarjun Kasoju * Laxman Dewangan * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include #include #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 unsigned int max77620_map_mode(unsigned int mode) { return mode; } 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; if (chip->chip_id == 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; } } } 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 = 1; 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); if (ret < 0) ret = of_property_read_u32(np, "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); if (ret < 0) ret = of_property_read_u32(np, "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); if (ret < 0) ret = of_property_read_u32(np, "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); if (ret < 0) ret = of_property_read_u32(np, "suspend-fps-source", &pval); rpdata->suspend_fps_src = (!ret) ? pval : -1; ret = of_property_read_u32( np, "maxim,suspend-fps-power-up-slot", &pval); if (ret < 0) ret = of_property_read_u32(np, "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); if (ret < 0) ret = of_property_read_u32(np, "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 < 0) ret = of_property_read_u32(np, "power-ok-control", &pval); rpdata->power_ok = (!ret) ? pval : -1; ret = of_property_read_u32(np, "maxim,ramp-rate-setting", &pval); if (ret < 0) ret = of_property_read_u32(np, "ramp-rate-setting", &pval); rpdata->ramp_rate_setting = (!ret) ? pval : 0; return max77620_init_pmic(pmic, desc->id); } static 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, \ .of_map_mode = max77620_map_mode, \ }, \ } #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, \ }, \ } 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 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; default: rinfo = max20024_regs_info; break; } config.regmap = pmic->rmap; config.dev = dev; config.driver_data = pmic; for (id = 0; id < MAX77620_NUM_REGS; id++) { struct regulator_dev *rdev; struct regulator_desc *rdesc; struct max77620_regulator_pdata *rpdata; if ((max77620_chip->chip_id == MAX77620) && (id == MAX77620_REGULATOR_ID_SD4)) continue; rdesc = &rinfo[id].desc; pmic->rinfo[id] = &max77620_regs_info[id]; rpdata = &pmic->reg_pdata[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; } /* there is no SW control for rails which are part of FPS * set always no contraint to true to avoid regulator * enable/disable notification */ if (rpdata->active_fps_src != MAX77620_FPS_SRC_NONE) rdev->constraints->always_on = true; } 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", }, {}, }; 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, }, }; static int __init max77620_regulator_init(void) { return platform_driver_register(&max77620_regulator_driver); } subsys_initcall(max77620_regulator_init); static void __exit max77620_reg_exit(void) { platform_driver_unregister(&max77620_regulator_driver); } module_exit(max77620_reg_exit); MODULE_DESCRIPTION("MAX77620/MAX20024 regulator driver"); MODULE_AUTHOR("Mallikarjun Kasoju "); MODULE_AUTHOR("Laxman Dewangan "); MODULE_LICENSE("GPL v2");