| /* |
| * Voltage regulator support for AMS AS3722 PMIC |
| * |
| * Copyright (C) 2013 ams |
| * |
| * Author: Florian Lobmaier <florian.lobmaier@ams.com> |
| * 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; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; 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/err.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/mfd/as3722.h> |
| #include <linux/of.h> |
| #include <linux/of_platform.h> |
| #include <linux/platform_device.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/slab.h> |
| |
| /* Regulator IDs */ |
| enum as3722_regulators_id { |
| AS3722_REGULATOR_ID_SD0, |
| AS3722_REGULATOR_ID_SD1, |
| AS3722_REGULATOR_ID_SD2, |
| AS3722_REGULATOR_ID_SD3, |
| AS3722_REGULATOR_ID_SD4, |
| AS3722_REGULATOR_ID_SD5, |
| AS3722_REGULATOR_ID_SD6, |
| AS3722_REGULATOR_ID_LDO0, |
| AS3722_REGULATOR_ID_LDO1, |
| AS3722_REGULATOR_ID_LDO2, |
| AS3722_REGULATOR_ID_LDO3, |
| AS3722_REGULATOR_ID_LDO4, |
| AS3722_REGULATOR_ID_LDO5, |
| AS3722_REGULATOR_ID_LDO6, |
| AS3722_REGULATOR_ID_LDO7, |
| AS3722_REGULATOR_ID_LDO9, |
| AS3722_REGULATOR_ID_LDO10, |
| AS3722_REGULATOR_ID_LDO11, |
| AS3722_REGULATOR_ID_MAX, |
| }; |
| |
| struct as3722_register_mapping { |
| u8 regulator_id; |
| const char *name; |
| const char *sname; |
| u8 vsel_reg; |
| u8 vsel_mask; |
| int n_voltages; |
| u32 enable_reg; |
| u8 enable_mask; |
| u32 control_reg; |
| u8 mode_mask; |
| u32 sleep_ctrl_reg; |
| u8 sleep_ctrl_mask; |
| }; |
| |
| struct as3722_regulator_config_data { |
| struct regulator_init_data *reg_init; |
| bool enable_tracking; |
| int ext_control; |
| }; |
| |
| struct as3722_regulators { |
| struct device *dev; |
| struct as3722 *as3722; |
| struct regulator_dev *rdevs[AS3722_REGULATOR_ID_MAX]; |
| struct regulator_desc desc[AS3722_REGULATOR_ID_MAX]; |
| struct as3722_regulator_config_data |
| reg_config_data[AS3722_REGULATOR_ID_MAX]; |
| }; |
| |
| static const struct as3722_register_mapping as3722_reg_lookup[] = { |
| { |
| .regulator_id = AS3722_REGULATOR_ID_SD0, |
| .name = "as3722-sd0", |
| .vsel_reg = AS3722_SD0_VOLTAGE_REG, |
| .vsel_mask = AS3722_SD_VSEL_MASK, |
| .enable_reg = AS3722_SD_CONTROL_REG, |
| .enable_mask = AS3722_SDn_CTRL(0), |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, |
| .sleep_ctrl_mask = AS3722_SD0_EXT_ENABLE_MASK, |
| .control_reg = AS3722_SD0_CONTROL_REG, |
| .mode_mask = AS3722_SD0_MODE_FAST, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_SD1, |
| .name = "as3722-sd1", |
| .vsel_reg = AS3722_SD1_VOLTAGE_REG, |
| .vsel_mask = AS3722_SD_VSEL_MASK, |
| .enable_reg = AS3722_SD_CONTROL_REG, |
| .enable_mask = AS3722_SDn_CTRL(1), |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, |
| .sleep_ctrl_mask = AS3722_SD1_EXT_ENABLE_MASK, |
| .control_reg = AS3722_SD1_CONTROL_REG, |
| .mode_mask = AS3722_SD1_MODE_FAST, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_SD2, |
| .name = "as3722-sd2", |
| .sname = "vsup-sd2", |
| .vsel_reg = AS3722_SD2_VOLTAGE_REG, |
| .vsel_mask = AS3722_SD_VSEL_MASK, |
| .enable_reg = AS3722_SD_CONTROL_REG, |
| .enable_mask = AS3722_SDn_CTRL(2), |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, |
| .sleep_ctrl_mask = AS3722_SD2_EXT_ENABLE_MASK, |
| .control_reg = AS3722_SD23_CONTROL_REG, |
| .mode_mask = AS3722_SD2_MODE_FAST, |
| .n_voltages = AS3722_SD2_VSEL_MAX + 1, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_SD3, |
| .name = "as3722-sd3", |
| .sname = "vsup-sd3", |
| .vsel_reg = AS3722_SD3_VOLTAGE_REG, |
| .vsel_mask = AS3722_SD_VSEL_MASK, |
| .enable_reg = AS3722_SD_CONTROL_REG, |
| .enable_mask = AS3722_SDn_CTRL(3), |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, |
| .sleep_ctrl_mask = AS3722_SD3_EXT_ENABLE_MASK, |
| .control_reg = AS3722_SD23_CONTROL_REG, |
| .mode_mask = AS3722_SD3_MODE_FAST, |
| .n_voltages = AS3722_SD2_VSEL_MAX + 1, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_SD4, |
| .name = "as3722-sd4", |
| .sname = "vsup-sd4", |
| .vsel_reg = AS3722_SD4_VOLTAGE_REG, |
| .vsel_mask = AS3722_SD_VSEL_MASK, |
| .enable_reg = AS3722_SD_CONTROL_REG, |
| .enable_mask = AS3722_SDn_CTRL(4), |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG, |
| .sleep_ctrl_mask = AS3722_SD4_EXT_ENABLE_MASK, |
| .control_reg = AS3722_SD4_CONTROL_REG, |
| .mode_mask = AS3722_SD4_MODE_FAST, |
| .n_voltages = AS3722_SD2_VSEL_MAX + 1, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_SD5, |
| .name = "as3722-sd5", |
| .sname = "vsup-sd5", |
| .vsel_reg = AS3722_SD5_VOLTAGE_REG, |
| .vsel_mask = AS3722_SD_VSEL_MASK, |
| .enable_reg = AS3722_SD_CONTROL_REG, |
| .enable_mask = AS3722_SDn_CTRL(5), |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG, |
| .sleep_ctrl_mask = AS3722_SD5_EXT_ENABLE_MASK, |
| .control_reg = AS3722_SD5_CONTROL_REG, |
| .mode_mask = AS3722_SD5_MODE_FAST, |
| .n_voltages = AS3722_SD2_VSEL_MAX + 1, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_SD6, |
| .name = "as3722-sd6", |
| .vsel_reg = AS3722_SD6_VOLTAGE_REG, |
| .vsel_mask = AS3722_SD_VSEL_MASK, |
| .enable_reg = AS3722_SD_CONTROL_REG, |
| .enable_mask = AS3722_SDn_CTRL(6), |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG, |
| .sleep_ctrl_mask = AS3722_SD6_EXT_ENABLE_MASK, |
| .control_reg = AS3722_SD6_CONTROL_REG, |
| .mode_mask = AS3722_SD6_MODE_FAST, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_LDO0, |
| .name = "as3722-ldo0", |
| .sname = "vin-ldo0", |
| .vsel_reg = AS3722_LDO0_VOLTAGE_REG, |
| .vsel_mask = AS3722_LDO0_VSEL_MASK, |
| .enable_reg = AS3722_LDOCONTROL0_REG, |
| .enable_mask = AS3722_LDO0_CTRL, |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, |
| .sleep_ctrl_mask = AS3722_LDO0_EXT_ENABLE_MASK, |
| .n_voltages = AS3722_LDO0_NUM_VOLT, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_LDO1, |
| .name = "as3722-ldo1", |
| .sname = "vin-ldo1-6", |
| .vsel_reg = AS3722_LDO1_VOLTAGE_REG, |
| .vsel_mask = AS3722_LDO_VSEL_MASK, |
| .enable_reg = AS3722_LDOCONTROL0_REG, |
| .enable_mask = AS3722_LDO1_CTRL, |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, |
| .sleep_ctrl_mask = AS3722_LDO1_EXT_ENABLE_MASK, |
| .n_voltages = AS3722_LDO_NUM_VOLT, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_LDO2, |
| .name = "as3722-ldo2", |
| .sname = "vin-ldo2-5-7", |
| .vsel_reg = AS3722_LDO2_VOLTAGE_REG, |
| .vsel_mask = AS3722_LDO_VSEL_MASK, |
| .enable_reg = AS3722_LDOCONTROL0_REG, |
| .enable_mask = AS3722_LDO2_CTRL, |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, |
| .sleep_ctrl_mask = AS3722_LDO2_EXT_ENABLE_MASK, |
| .n_voltages = AS3722_LDO_NUM_VOLT, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_LDO3, |
| .name = "as3722-ldo3", |
| .name = "vin-ldo3-4", |
| .vsel_reg = AS3722_LDO3_VOLTAGE_REG, |
| .vsel_mask = AS3722_LDO3_VSEL_MASK, |
| .enable_reg = AS3722_LDOCONTROL0_REG, |
| .enable_mask = AS3722_LDO3_CTRL, |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, |
| .sleep_ctrl_mask = AS3722_LDO3_EXT_ENABLE_MASK, |
| .n_voltages = AS3722_LDO3_NUM_VOLT, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_LDO4, |
| .name = "as3722-ldo4", |
| .name = "vin-ldo3-4", |
| .vsel_reg = AS3722_LDO4_VOLTAGE_REG, |
| .vsel_mask = AS3722_LDO_VSEL_MASK, |
| .enable_reg = AS3722_LDOCONTROL0_REG, |
| .enable_mask = AS3722_LDO4_CTRL, |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, |
| .sleep_ctrl_mask = AS3722_LDO4_EXT_ENABLE_MASK, |
| .n_voltages = AS3722_LDO_NUM_VOLT, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_LDO5, |
| .name = "as3722-ldo5", |
| .sname = "vin-ldo2-5-7", |
| .vsel_reg = AS3722_LDO5_VOLTAGE_REG, |
| .vsel_mask = AS3722_LDO_VSEL_MASK, |
| .enable_reg = AS3722_LDOCONTROL0_REG, |
| .enable_mask = AS3722_LDO5_CTRL, |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, |
| .sleep_ctrl_mask = AS3722_LDO5_EXT_ENABLE_MASK, |
| .n_voltages = AS3722_LDO_NUM_VOLT, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_LDO6, |
| .name = "as3722-ldo6", |
| .sname = "vin-ldo1-6", |
| .vsel_reg = AS3722_LDO6_VOLTAGE_REG, |
| .vsel_mask = AS3722_LDO_VSEL_MASK, |
| .enable_reg = AS3722_LDOCONTROL0_REG, |
| .enable_mask = AS3722_LDO6_CTRL, |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, |
| .sleep_ctrl_mask = AS3722_LDO6_EXT_ENABLE_MASK, |
| .n_voltages = AS3722_LDO_NUM_VOLT, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_LDO7, |
| .name = "as3722-ldo7", |
| .sname = "vin-ldo2-5-7", |
| .vsel_reg = AS3722_LDO7_VOLTAGE_REG, |
| .vsel_mask = AS3722_LDO_VSEL_MASK, |
| .enable_reg = AS3722_LDOCONTROL0_REG, |
| .enable_mask = AS3722_LDO7_CTRL, |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, |
| .sleep_ctrl_mask = AS3722_LDO7_EXT_ENABLE_MASK, |
| .n_voltages = AS3722_LDO_NUM_VOLT, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_LDO9, |
| .name = "as3722-ldo9", |
| .sname = "vin-ldo9-10", |
| .vsel_reg = AS3722_LDO9_VOLTAGE_REG, |
| .vsel_mask = AS3722_LDO_VSEL_MASK, |
| .enable_reg = AS3722_LDOCONTROL1_REG, |
| .enable_mask = AS3722_LDO9_CTRL, |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG, |
| .sleep_ctrl_mask = AS3722_LDO9_EXT_ENABLE_MASK, |
| .n_voltages = AS3722_LDO_NUM_VOLT, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_LDO10, |
| .name = "as3722-ldo10", |
| .sname = "vin-ldo9-10", |
| .vsel_reg = AS3722_LDO10_VOLTAGE_REG, |
| .vsel_mask = AS3722_LDO_VSEL_MASK, |
| .enable_reg = AS3722_LDOCONTROL1_REG, |
| .enable_mask = AS3722_LDO10_CTRL, |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG, |
| .sleep_ctrl_mask = AS3722_LDO10_EXT_ENABLE_MASK, |
| .n_voltages = AS3722_LDO_NUM_VOLT, |
| }, |
| { |
| .regulator_id = AS3722_REGULATOR_ID_LDO11, |
| .name = "as3722-ldo11", |
| .sname = "vin-ldo11", |
| .vsel_reg = AS3722_LDO11_VOLTAGE_REG, |
| .vsel_mask = AS3722_LDO_VSEL_MASK, |
| .enable_reg = AS3722_LDOCONTROL1_REG, |
| .enable_mask = AS3722_LDO11_CTRL, |
| .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG, |
| .sleep_ctrl_mask = AS3722_LDO11_EXT_ENABLE_MASK, |
| .n_voltages = AS3722_LDO_NUM_VOLT, |
| }, |
| }; |
| |
| |
| static const int as3722_ldo_current[] = { 150000, 300000 }; |
| static const int as3722_sd016_current[] = { 2500000, 3000000, 3500000 }; |
| |
| static int as3722_current_to_index(int min_uA, int max_uA, |
| const int *curr_table, int n_currents) |
| { |
| int i; |
| |
| for (i = n_currents - 1; i >= 0; i--) { |
| if ((min_uA <= curr_table[i]) && (curr_table[i] <= max_uA)) |
| return i; |
| } |
| return -EINVAL; |
| } |
| |
| static int as3722_ldo_get_current_limit(struct regulator_dev *rdev) |
| { |
| struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev); |
| struct as3722 *as3722 = as3722_regs->as3722; |
| int id = rdev_get_id(rdev); |
| u32 val; |
| int ret; |
| |
| ret = as3722_read(as3722, as3722_reg_lookup[id].vsel_reg, &val); |
| if (ret < 0) { |
| dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n", |
| as3722_reg_lookup[id].vsel_reg, ret); |
| return ret; |
| } |
| if (val & AS3722_LDO_ILIMIT_MASK) |
| return 300000; |
| return 150000; |
| } |
| |
| static int as3722_ldo_set_current_limit(struct regulator_dev *rdev, |
| int min_uA, int max_uA) |
| { |
| struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev); |
| struct as3722 *as3722 = as3722_regs->as3722; |
| int id = rdev_get_id(rdev); |
| int ret; |
| u32 reg = 0; |
| |
| ret = as3722_current_to_index(min_uA, max_uA, as3722_ldo_current, |
| ARRAY_SIZE(as3722_ldo_current)); |
| if (ret < 0) { |
| dev_err(as3722_regs->dev, |
| "Current range min:max = %d:%d does not support\n", |
| min_uA, max_uA); |
| return ret; |
| } |
| if (ret) |
| reg = AS3722_LDO_ILIMIT_BIT; |
| return as3722_update_bits(as3722, as3722_reg_lookup[id].vsel_reg, |
| AS3722_LDO_ILIMIT_MASK, reg); |
| } |
| |
| static struct regulator_ops as3722_ldo0_ops = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .list_voltage = regulator_list_voltage_linear, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .get_current_limit = as3722_ldo_get_current_limit, |
| .set_current_limit = as3722_ldo_set_current_limit, |
| }; |
| |
| static struct regulator_ops as3722_ldo0_extcntrl_ops = { |
| .list_voltage = regulator_list_voltage_linear, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .get_current_limit = as3722_ldo_get_current_limit, |
| .set_current_limit = as3722_ldo_set_current_limit, |
| }; |
| |
| static int as3722_ldo3_set_tracking_mode(struct as3722_regulators *as3722_reg, |
| int id, u8 mode) |
| { |
| struct as3722 *as3722 = as3722_reg->as3722; |
| |
| switch (mode) { |
| case AS3722_LDO3_MODE_PMOS: |
| case AS3722_LDO3_MODE_PMOS_TRACKING: |
| case AS3722_LDO3_MODE_NMOS: |
| case AS3722_LDO3_MODE_SWITCH: |
| return as3722_update_bits(as3722, |
| as3722_reg_lookup[id].vsel_reg, |
| AS3722_LDO3_MODE_MASK, mode); |
| |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int as3722_ldo3_get_current_limit(struct regulator_dev *rdev) |
| { |
| return 150000; |
| } |
| |
| static struct regulator_ops as3722_ldo3_ops = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .list_voltage = regulator_list_voltage_linear, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .get_current_limit = as3722_ldo3_get_current_limit, |
| }; |
| |
| static struct regulator_ops as3722_ldo3_extcntrl_ops = { |
| .list_voltage = regulator_list_voltage_linear, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .get_current_limit = as3722_ldo3_get_current_limit, |
| }; |
| |
| static const struct regulator_linear_range as3722_ldo_ranges[] = { |
| REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0), |
| REGULATOR_LINEAR_RANGE(825000, 0x01, 0x24, 25000), |
| REGULATOR_LINEAR_RANGE(1725000, 0x40, 0x7F, 25000), |
| }; |
| |
| static struct regulator_ops as3722_ldo_ops = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .map_voltage = regulator_map_voltage_linear_range, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .list_voltage = regulator_list_voltage_linear_range, |
| .get_current_limit = as3722_ldo_get_current_limit, |
| .set_current_limit = as3722_ldo_set_current_limit, |
| }; |
| |
| static struct regulator_ops as3722_ldo_extcntrl_ops = { |
| .map_voltage = regulator_map_voltage_linear_range, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .list_voltage = regulator_list_voltage_linear_range, |
| .get_current_limit = as3722_ldo_get_current_limit, |
| .set_current_limit = as3722_ldo_set_current_limit, |
| }; |
| |
| static unsigned int as3722_sd_get_mode(struct regulator_dev *rdev) |
| { |
| struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev); |
| struct as3722 *as3722 = as3722_regs->as3722; |
| int id = rdev_get_id(rdev); |
| u32 val; |
| int ret; |
| |
| if (!as3722_reg_lookup[id].control_reg) |
| return -ENOTSUPP; |
| |
| ret = as3722_read(as3722, as3722_reg_lookup[id].control_reg, &val); |
| if (ret < 0) { |
| dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n", |
| as3722_reg_lookup[id].control_reg, ret); |
| return ret; |
| } |
| |
| if (val & as3722_reg_lookup[id].mode_mask) |
| return REGULATOR_MODE_FAST; |
| else |
| return REGULATOR_MODE_NORMAL; |
| } |
| |
| static int as3722_sd_set_mode(struct regulator_dev *rdev, |
| unsigned int mode) |
| { |
| struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev); |
| struct as3722 *as3722 = as3722_regs->as3722; |
| u8 id = rdev_get_id(rdev); |
| u8 val = 0; |
| int ret; |
| |
| if (!as3722_reg_lookup[id].control_reg) |
| return -ERANGE; |
| |
| switch (mode) { |
| case REGULATOR_MODE_FAST: |
| val = as3722_reg_lookup[id].mode_mask; |
| case REGULATOR_MODE_NORMAL: /* fall down */ |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| ret = as3722_update_bits(as3722, as3722_reg_lookup[id].control_reg, |
| as3722_reg_lookup[id].mode_mask, val); |
| if (ret < 0) { |
| dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n", |
| as3722_reg_lookup[id].control_reg, ret); |
| return ret; |
| } |
| return ret; |
| } |
| |
| static int as3722_sd016_get_current_limit(struct regulator_dev *rdev) |
| { |
| struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev); |
| struct as3722 *as3722 = as3722_regs->as3722; |
| int id = rdev_get_id(rdev); |
| u32 val, reg; |
| int mask; |
| int ret; |
| |
| switch (id) { |
| case AS3722_REGULATOR_ID_SD0: |
| reg = AS3722_OVCURRENT_REG; |
| mask = AS3722_OVCURRENT_SD0_TRIP_MASK; |
| break; |
| case AS3722_REGULATOR_ID_SD1: |
| reg = AS3722_OVCURRENT_REG; |
| mask = AS3722_OVCURRENT_SD1_TRIP_MASK; |
| break; |
| case AS3722_REGULATOR_ID_SD6: |
| reg = AS3722_OVCURRENT_DEB_REG; |
| mask = AS3722_OVCURRENT_SD6_TRIP_MASK; |
| break; |
| default: |
| return -EINVAL; |
| } |
| ret = as3722_read(as3722, reg, &val); |
| if (ret < 0) { |
| dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n", |
| reg, ret); |
| return ret; |
| } |
| val &= mask; |
| val >>= ffs(mask) - 1; |
| if (val == 3) |
| return -EINVAL; |
| return as3722_sd016_current[val]; |
| } |
| |
| static int as3722_sd016_set_current_limit(struct regulator_dev *rdev, |
| int min_uA, int max_uA) |
| { |
| struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev); |
| struct as3722 *as3722 = as3722_regs->as3722; |
| int id = rdev_get_id(rdev); |
| int ret; |
| int val; |
| int mask; |
| u32 reg; |
| |
| ret = as3722_current_to_index(min_uA, max_uA, as3722_sd016_current, |
| ARRAY_SIZE(as3722_sd016_current)); |
| if (ret < 0) { |
| dev_err(as3722_regs->dev, |
| "Current range min:max = %d:%d does not support\n", |
| min_uA, max_uA); |
| return ret; |
| } |
| |
| switch (id) { |
| case AS3722_REGULATOR_ID_SD0: |
| reg = AS3722_OVCURRENT_REG; |
| mask = AS3722_OVCURRENT_SD0_TRIP_MASK; |
| break; |
| case AS3722_REGULATOR_ID_SD1: |
| reg = AS3722_OVCURRENT_REG; |
| mask = AS3722_OVCURRENT_SD1_TRIP_MASK; |
| break; |
| case AS3722_REGULATOR_ID_SD6: |
| reg = AS3722_OVCURRENT_DEB_REG; |
| mask = AS3722_OVCURRENT_SD6_TRIP_MASK; |
| break; |
| default: |
| return -EINVAL; |
| } |
| ret <<= ffs(mask) - 1; |
| val = ret & mask; |
| return as3722_update_bits(as3722, reg, mask, val); |
| } |
| |
| static bool as3722_sd0_is_low_voltage(struct as3722_regulators *as3722_regs) |
| { |
| int err; |
| unsigned val; |
| |
| err = as3722_read(as3722_regs->as3722, AS3722_FUSE7_REG, &val); |
| if (err < 0) { |
| dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n", |
| AS3722_FUSE7_REG, err); |
| return false; |
| } |
| if (val & AS3722_FUSE7_SD0_LOW_VOLTAGE) |
| return true; |
| return false; |
| } |
| |
| static const struct regulator_linear_range as3722_sd2345_ranges[] = { |
| REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0), |
| REGULATOR_LINEAR_RANGE(612500, 0x01, 0x40, 12500), |
| REGULATOR_LINEAR_RANGE(1425000, 0x41, 0x70, 25000), |
| REGULATOR_LINEAR_RANGE(2650000, 0x71, 0x7F, 50000), |
| }; |
| |
| static struct regulator_ops as3722_sd016_ops = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .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, |
| .get_current_limit = as3722_sd016_get_current_limit, |
| .set_current_limit = as3722_sd016_set_current_limit, |
| .get_mode = as3722_sd_get_mode, |
| .set_mode = as3722_sd_set_mode, |
| }; |
| |
| static struct regulator_ops as3722_sd016_extcntrl_ops = { |
| .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, |
| .get_current_limit = as3722_sd016_get_current_limit, |
| .set_current_limit = as3722_sd016_set_current_limit, |
| .get_mode = as3722_sd_get_mode, |
| .set_mode = as3722_sd_set_mode, |
| }; |
| |
| static struct regulator_ops as3722_sd2345_ops = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .list_voltage = regulator_list_voltage_linear_range, |
| .map_voltage = regulator_map_voltage_linear_range, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .get_mode = as3722_sd_get_mode, |
| .set_mode = as3722_sd_set_mode, |
| }; |
| |
| static struct regulator_ops as3722_sd2345_extcntrl_ops = { |
| .list_voltage = regulator_list_voltage_linear_range, |
| .map_voltage = regulator_map_voltage_linear_range, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .get_mode = as3722_sd_get_mode, |
| .set_mode = as3722_sd_set_mode, |
| }; |
| |
| static int as3722_extreg_init(struct as3722_regulators *as3722_regs, int id, |
| int ext_pwr_ctrl) |
| { |
| int ret; |
| unsigned int val; |
| |
| if ((ext_pwr_ctrl < AS3722_EXT_CONTROL_ENABLE1) || |
| (ext_pwr_ctrl > AS3722_EXT_CONTROL_ENABLE3)) |
| return -EINVAL; |
| |
| val = ext_pwr_ctrl << (ffs(as3722_reg_lookup[id].sleep_ctrl_mask) - 1); |
| ret = as3722_update_bits(as3722_regs->as3722, |
| as3722_reg_lookup[id].sleep_ctrl_reg, |
| as3722_reg_lookup[id].sleep_ctrl_mask, val); |
| if (ret < 0) |
| dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n", |
| as3722_reg_lookup[id].sleep_ctrl_reg, ret); |
| return ret; |
| } |
| |
| static struct of_regulator_match as3722_regulator_matches[] = { |
| { .name = "sd0", }, |
| { .name = "sd1", }, |
| { .name = "sd2", }, |
| { .name = "sd3", }, |
| { .name = "sd4", }, |
| { .name = "sd5", }, |
| { .name = "sd6", }, |
| { .name = "ldo0", }, |
| { .name = "ldo1", }, |
| { .name = "ldo2", }, |
| { .name = "ldo3", }, |
| { .name = "ldo4", }, |
| { .name = "ldo5", }, |
| { .name = "ldo6", }, |
| { .name = "ldo7", }, |
| { .name = "ldo9", }, |
| { .name = "ldo10", }, |
| { .name = "ldo11", }, |
| }; |
| |
| static int as3722_get_regulator_dt_data(struct platform_device *pdev, |
| struct as3722_regulators *as3722_regs) |
| { |
| struct device_node *np; |
| struct as3722_regulator_config_data *reg_config; |
| u32 prop; |
| int id; |
| int ret; |
| |
| np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); |
| if (!np) { |
| dev_err(&pdev->dev, "Device is not having regulators node\n"); |
| return -ENODEV; |
| } |
| pdev->dev.of_node = np; |
| |
| ret = of_regulator_match(&pdev->dev, np, as3722_regulator_matches, |
| ARRAY_SIZE(as3722_regulator_matches)); |
| of_node_put(np); |
| if (ret < 0) { |
| dev_err(&pdev->dev, "Parsing of regulator node failed: %d\n", |
| ret); |
| return ret; |
| } |
| |
| for (id = 0; id < ARRAY_SIZE(as3722_regulator_matches); ++id) { |
| struct device_node *reg_node; |
| |
| reg_config = &as3722_regs->reg_config_data[id]; |
| reg_config->reg_init = as3722_regulator_matches[id].init_data; |
| reg_node = as3722_regulator_matches[id].of_node; |
| |
| if (!reg_config->reg_init || !reg_node) |
| continue; |
| |
| ret = of_property_read_u32(reg_node, "ams,ext-control", &prop); |
| if (!ret) { |
| if (prop < 3) |
| reg_config->ext_control = prop; |
| else |
| dev_warn(&pdev->dev, |
| "ext-control have invalid option: %u\n", |
| prop); |
| } |
| reg_config->enable_tracking = |
| of_property_read_bool(reg_node, "ams,enable-tracking"); |
| } |
| return 0; |
| } |
| |
| static int as3722_regulator_probe(struct platform_device *pdev) |
| { |
| struct as3722 *as3722 = dev_get_drvdata(pdev->dev.parent); |
| struct as3722_regulators *as3722_regs; |
| struct as3722_regulator_config_data *reg_config; |
| struct regulator_dev *rdev; |
| struct regulator_config config = { }; |
| struct regulator_ops *ops; |
| int id; |
| int ret; |
| |
| as3722_regs = devm_kzalloc(&pdev->dev, sizeof(*as3722_regs), |
| GFP_KERNEL); |
| if (!as3722_regs) |
| return -ENOMEM; |
| |
| as3722_regs->dev = &pdev->dev; |
| as3722_regs->as3722 = as3722; |
| platform_set_drvdata(pdev, as3722_regs); |
| |
| ret = as3722_get_regulator_dt_data(pdev, as3722_regs); |
| if (ret < 0) |
| return ret; |
| |
| config.dev = &pdev->dev; |
| config.driver_data = as3722_regs; |
| config.regmap = as3722->regmap; |
| |
| for (id = 0; id < AS3722_REGULATOR_ID_MAX; id++) { |
| reg_config = &as3722_regs->reg_config_data[id]; |
| |
| as3722_regs->desc[id].name = as3722_reg_lookup[id].name; |
| as3722_regs->desc[id].supply_name = as3722_reg_lookup[id].sname; |
| as3722_regs->desc[id].id = as3722_reg_lookup[id].regulator_id; |
| as3722_regs->desc[id].n_voltages = |
| as3722_reg_lookup[id].n_voltages; |
| as3722_regs->desc[id].type = REGULATOR_VOLTAGE; |
| as3722_regs->desc[id].owner = THIS_MODULE; |
| as3722_regs->desc[id].enable_reg = |
| as3722_reg_lookup[id].enable_reg; |
| as3722_regs->desc[id].enable_mask = |
| as3722_reg_lookup[id].enable_mask; |
| as3722_regs->desc[id].vsel_reg = as3722_reg_lookup[id].vsel_reg; |
| as3722_regs->desc[id].vsel_mask = |
| as3722_reg_lookup[id].vsel_mask; |
| switch (id) { |
| case AS3722_REGULATOR_ID_LDO0: |
| if (reg_config->ext_control) |
| ops = &as3722_ldo0_extcntrl_ops; |
| else |
| ops = &as3722_ldo0_ops; |
| as3722_regs->desc[id].min_uV = 825000; |
| as3722_regs->desc[id].uV_step = 25000; |
| as3722_regs->desc[id].linear_min_sel = 1; |
| as3722_regs->desc[id].enable_time = 500; |
| break; |
| case AS3722_REGULATOR_ID_LDO3: |
| if (reg_config->ext_control) |
| ops = &as3722_ldo3_extcntrl_ops; |
| else |
| ops = &as3722_ldo3_ops; |
| as3722_regs->desc[id].min_uV = 620000; |
| as3722_regs->desc[id].uV_step = 20000; |
| as3722_regs->desc[id].linear_min_sel = 1; |
| as3722_regs->desc[id].enable_time = 500; |
| if (reg_config->enable_tracking) { |
| ret = as3722_ldo3_set_tracking_mode(as3722_regs, |
| id, AS3722_LDO3_MODE_PMOS_TRACKING); |
| if (ret < 0) { |
| dev_err(&pdev->dev, |
| "LDO3 tracking failed: %d\n", |
| ret); |
| return ret; |
| } |
| } |
| break; |
| case AS3722_REGULATOR_ID_SD0: |
| case AS3722_REGULATOR_ID_SD1: |
| case AS3722_REGULATOR_ID_SD6: |
| if (reg_config->ext_control) |
| ops = &as3722_sd016_extcntrl_ops; |
| else |
| ops = &as3722_sd016_ops; |
| if (id == AS3722_REGULATOR_ID_SD0 && |
| as3722_sd0_is_low_voltage(as3722_regs)) { |
| as3722_regs->desc[id].n_voltages = |
| AS3722_SD0_VSEL_LOW_VOL_MAX + 1; |
| as3722_regs->desc[id].min_uV = 410000; |
| } else { |
| as3722_regs->desc[id].n_voltages = |
| AS3722_SD0_VSEL_MAX + 1, |
| as3722_regs->desc[id].min_uV = 610000; |
| } |
| as3722_regs->desc[id].uV_step = 10000; |
| as3722_regs->desc[id].linear_min_sel = 1; |
| as3722_regs->desc[id].enable_time = 600; |
| break; |
| case AS3722_REGULATOR_ID_SD2: |
| case AS3722_REGULATOR_ID_SD3: |
| case AS3722_REGULATOR_ID_SD4: |
| case AS3722_REGULATOR_ID_SD5: |
| if (reg_config->ext_control) |
| ops = &as3722_sd2345_extcntrl_ops; |
| else |
| ops = &as3722_sd2345_ops; |
| as3722_regs->desc[id].linear_ranges = |
| as3722_sd2345_ranges; |
| as3722_regs->desc[id].n_linear_ranges = |
| ARRAY_SIZE(as3722_sd2345_ranges); |
| break; |
| default: |
| if (reg_config->ext_control) |
| ops = &as3722_ldo_extcntrl_ops; |
| else |
| ops = &as3722_ldo_ops; |
| as3722_regs->desc[id].enable_time = 500; |
| as3722_regs->desc[id].linear_ranges = as3722_ldo_ranges; |
| as3722_regs->desc[id].n_linear_ranges = |
| ARRAY_SIZE(as3722_ldo_ranges); |
| break; |
| } |
| as3722_regs->desc[id].ops = ops; |
| config.init_data = reg_config->reg_init; |
| config.of_node = as3722_regulator_matches[id].of_node; |
| rdev = devm_regulator_register(&pdev->dev, |
| &as3722_regs->desc[id], &config); |
| if (IS_ERR(rdev)) { |
| ret = PTR_ERR(rdev); |
| dev_err(&pdev->dev, "regulator %d register failed %d\n", |
| id, ret); |
| return ret; |
| } |
| |
| as3722_regs->rdevs[id] = rdev; |
| if (reg_config->ext_control) { |
| ret = regulator_enable_regmap(rdev); |
| if (ret < 0) { |
| dev_err(&pdev->dev, |
| "Regulator %d enable failed: %d\n", |
| id, ret); |
| return ret; |
| } |
| ret = as3722_extreg_init(as3722_regs, id, |
| reg_config->ext_control); |
| if (ret < 0) { |
| dev_err(&pdev->dev, |
| "AS3722 ext control failed: %d", ret); |
| return ret; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| static const struct of_device_id of_as3722_regulator_match[] = { |
| { .compatible = "ams,as3722-regulator", }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, of_as3722_regulator_match); |
| |
| static struct platform_driver as3722_regulator_driver = { |
| .driver = { |
| .name = "as3722-regulator", |
| .owner = THIS_MODULE, |
| .of_match_table = of_as3722_regulator_match, |
| }, |
| .probe = as3722_regulator_probe, |
| }; |
| |
| module_platform_driver(as3722_regulator_driver); |
| |
| MODULE_ALIAS("platform:as3722-regulator"); |
| MODULE_DESCRIPTION("AS3722 regulator driver"); |
| MODULE_AUTHOR("Florian Lobmaier <florian.lobmaier@ams.com>"); |
| MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>"); |
| MODULE_LICENSE("GPL"); |
