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845 lines
25 KiB
845 lines
25 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Voltage regulator support for AMS AS3722 PMIC |
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* |
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* Copyright (C) 2013 ams |
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* |
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* Author: Florian Lobmaier <[email protected]> |
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* Author: Laxman Dewangan <[email protected]> |
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*/ |
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#include <linux/err.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/mfd/as3722.h> |
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#include <linux/of.h> |
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#include <linux/of_platform.h> |
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#include <linux/platform_device.h> |
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#include <linux/regulator/driver.h> |
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#include <linux/regulator/machine.h> |
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#include <linux/regulator/of_regulator.h> |
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#include <linux/slab.h> |
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|
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/* Regulator IDs */ |
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enum as3722_regulators_id { |
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AS3722_REGULATOR_ID_SD0, |
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AS3722_REGULATOR_ID_SD1, |
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AS3722_REGULATOR_ID_SD2, |
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AS3722_REGULATOR_ID_SD3, |
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AS3722_REGULATOR_ID_SD4, |
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AS3722_REGULATOR_ID_SD5, |
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AS3722_REGULATOR_ID_SD6, |
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AS3722_REGULATOR_ID_LDO0, |
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AS3722_REGULATOR_ID_LDO1, |
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AS3722_REGULATOR_ID_LDO2, |
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AS3722_REGULATOR_ID_LDO3, |
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AS3722_REGULATOR_ID_LDO4, |
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AS3722_REGULATOR_ID_LDO5, |
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AS3722_REGULATOR_ID_LDO6, |
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AS3722_REGULATOR_ID_LDO7, |
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AS3722_REGULATOR_ID_LDO9, |
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AS3722_REGULATOR_ID_LDO10, |
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AS3722_REGULATOR_ID_LDO11, |
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AS3722_REGULATOR_ID_MAX, |
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}; |
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struct as3722_register_mapping { |
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u8 regulator_id; |
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const char *name; |
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const char *sname; |
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u8 vsel_reg; |
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u8 vsel_mask; |
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int n_voltages; |
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u32 enable_reg; |
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u8 enable_mask; |
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u32 control_reg; |
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u8 mode_mask; |
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u32 sleep_ctrl_reg; |
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u8 sleep_ctrl_mask; |
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}; |
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struct as3722_regulator_config_data { |
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struct regulator_init_data *reg_init; |
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bool enable_tracking; |
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int ext_control; |
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}; |
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struct as3722_regulators { |
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struct device *dev; |
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struct as3722 *as3722; |
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struct regulator_desc desc[AS3722_REGULATOR_ID_MAX]; |
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struct as3722_regulator_config_data |
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reg_config_data[AS3722_REGULATOR_ID_MAX]; |
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}; |
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static const struct as3722_register_mapping as3722_reg_lookup[] = { |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_SD0, |
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.name = "as3722-sd0", |
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.vsel_reg = AS3722_SD0_VOLTAGE_REG, |
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.vsel_mask = AS3722_SD_VSEL_MASK, |
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.enable_reg = AS3722_SD_CONTROL_REG, |
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.enable_mask = AS3722_SDn_CTRL(0), |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, |
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.sleep_ctrl_mask = AS3722_SD0_EXT_ENABLE_MASK, |
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.control_reg = AS3722_SD0_CONTROL_REG, |
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.mode_mask = AS3722_SD0_MODE_FAST, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_SD1, |
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.name = "as3722-sd1", |
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.vsel_reg = AS3722_SD1_VOLTAGE_REG, |
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.vsel_mask = AS3722_SD_VSEL_MASK, |
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.enable_reg = AS3722_SD_CONTROL_REG, |
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.enable_mask = AS3722_SDn_CTRL(1), |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, |
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.sleep_ctrl_mask = AS3722_SD1_EXT_ENABLE_MASK, |
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.control_reg = AS3722_SD1_CONTROL_REG, |
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.mode_mask = AS3722_SD1_MODE_FAST, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_SD2, |
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.name = "as3722-sd2", |
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.sname = "vsup-sd2", |
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.vsel_reg = AS3722_SD2_VOLTAGE_REG, |
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.vsel_mask = AS3722_SD_VSEL_MASK, |
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.enable_reg = AS3722_SD_CONTROL_REG, |
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.enable_mask = AS3722_SDn_CTRL(2), |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, |
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.sleep_ctrl_mask = AS3722_SD2_EXT_ENABLE_MASK, |
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.control_reg = AS3722_SD23_CONTROL_REG, |
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.mode_mask = AS3722_SD2_MODE_FAST, |
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.n_voltages = AS3722_SD2_VSEL_MAX + 1, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_SD3, |
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.name = "as3722-sd3", |
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.sname = "vsup-sd3", |
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.vsel_reg = AS3722_SD3_VOLTAGE_REG, |
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.vsel_mask = AS3722_SD_VSEL_MASK, |
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.enable_reg = AS3722_SD_CONTROL_REG, |
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.enable_mask = AS3722_SDn_CTRL(3), |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, |
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.sleep_ctrl_mask = AS3722_SD3_EXT_ENABLE_MASK, |
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.control_reg = AS3722_SD23_CONTROL_REG, |
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.mode_mask = AS3722_SD3_MODE_FAST, |
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.n_voltages = AS3722_SD2_VSEL_MAX + 1, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_SD4, |
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.name = "as3722-sd4", |
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.sname = "vsup-sd4", |
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.vsel_reg = AS3722_SD4_VOLTAGE_REG, |
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.vsel_mask = AS3722_SD_VSEL_MASK, |
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.enable_reg = AS3722_SD_CONTROL_REG, |
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.enable_mask = AS3722_SDn_CTRL(4), |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG, |
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.sleep_ctrl_mask = AS3722_SD4_EXT_ENABLE_MASK, |
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.control_reg = AS3722_SD4_CONTROL_REG, |
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.mode_mask = AS3722_SD4_MODE_FAST, |
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.n_voltages = AS3722_SD2_VSEL_MAX + 1, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_SD5, |
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.name = "as3722-sd5", |
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.sname = "vsup-sd5", |
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.vsel_reg = AS3722_SD5_VOLTAGE_REG, |
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.vsel_mask = AS3722_SD_VSEL_MASK, |
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.enable_reg = AS3722_SD_CONTROL_REG, |
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.enable_mask = AS3722_SDn_CTRL(5), |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG, |
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.sleep_ctrl_mask = AS3722_SD5_EXT_ENABLE_MASK, |
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.control_reg = AS3722_SD5_CONTROL_REG, |
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.mode_mask = AS3722_SD5_MODE_FAST, |
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.n_voltages = AS3722_SD2_VSEL_MAX + 1, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_SD6, |
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.name = "as3722-sd6", |
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.vsel_reg = AS3722_SD6_VOLTAGE_REG, |
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.vsel_mask = AS3722_SD_VSEL_MASK, |
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.enable_reg = AS3722_SD_CONTROL_REG, |
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.enable_mask = AS3722_SDn_CTRL(6), |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG, |
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.sleep_ctrl_mask = AS3722_SD6_EXT_ENABLE_MASK, |
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.control_reg = AS3722_SD6_CONTROL_REG, |
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.mode_mask = AS3722_SD6_MODE_FAST, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_LDO0, |
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.name = "as3722-ldo0", |
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.sname = "vin-ldo0", |
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.vsel_reg = AS3722_LDO0_VOLTAGE_REG, |
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.vsel_mask = AS3722_LDO0_VSEL_MASK, |
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.enable_reg = AS3722_LDOCONTROL0_REG, |
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.enable_mask = AS3722_LDO0_CTRL, |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, |
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.sleep_ctrl_mask = AS3722_LDO0_EXT_ENABLE_MASK, |
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.n_voltages = AS3722_LDO0_NUM_VOLT, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_LDO1, |
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.name = "as3722-ldo1", |
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.sname = "vin-ldo1-6", |
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.vsel_reg = AS3722_LDO1_VOLTAGE_REG, |
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.vsel_mask = AS3722_LDO_VSEL_MASK, |
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.enable_reg = AS3722_LDOCONTROL0_REG, |
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.enable_mask = AS3722_LDO1_CTRL, |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, |
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.sleep_ctrl_mask = AS3722_LDO1_EXT_ENABLE_MASK, |
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.n_voltages = AS3722_LDO_NUM_VOLT, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_LDO2, |
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.name = "as3722-ldo2", |
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.sname = "vin-ldo2-5-7", |
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.vsel_reg = AS3722_LDO2_VOLTAGE_REG, |
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.vsel_mask = AS3722_LDO_VSEL_MASK, |
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.enable_reg = AS3722_LDOCONTROL0_REG, |
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.enable_mask = AS3722_LDO2_CTRL, |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, |
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.sleep_ctrl_mask = AS3722_LDO2_EXT_ENABLE_MASK, |
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.n_voltages = AS3722_LDO_NUM_VOLT, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_LDO3, |
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.name = "as3722-ldo3", |
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.sname = "vin-ldo3-4", |
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.vsel_reg = AS3722_LDO3_VOLTAGE_REG, |
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.vsel_mask = AS3722_LDO3_VSEL_MASK, |
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.enable_reg = AS3722_LDOCONTROL0_REG, |
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.enable_mask = AS3722_LDO3_CTRL, |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, |
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.sleep_ctrl_mask = AS3722_LDO3_EXT_ENABLE_MASK, |
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.n_voltages = AS3722_LDO3_NUM_VOLT, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_LDO4, |
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.name = "as3722-ldo4", |
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.sname = "vin-ldo3-4", |
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.vsel_reg = AS3722_LDO4_VOLTAGE_REG, |
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.vsel_mask = AS3722_LDO_VSEL_MASK, |
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.enable_reg = AS3722_LDOCONTROL0_REG, |
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.enable_mask = AS3722_LDO4_CTRL, |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, |
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.sleep_ctrl_mask = AS3722_LDO4_EXT_ENABLE_MASK, |
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.n_voltages = AS3722_LDO_NUM_VOLT, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_LDO5, |
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.name = "as3722-ldo5", |
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.sname = "vin-ldo2-5-7", |
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.vsel_reg = AS3722_LDO5_VOLTAGE_REG, |
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.vsel_mask = AS3722_LDO_VSEL_MASK, |
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.enable_reg = AS3722_LDOCONTROL0_REG, |
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.enable_mask = AS3722_LDO5_CTRL, |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, |
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.sleep_ctrl_mask = AS3722_LDO5_EXT_ENABLE_MASK, |
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.n_voltages = AS3722_LDO_NUM_VOLT, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_LDO6, |
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.name = "as3722-ldo6", |
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.sname = "vin-ldo1-6", |
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.vsel_reg = AS3722_LDO6_VOLTAGE_REG, |
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.vsel_mask = AS3722_LDO_VSEL_MASK, |
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.enable_reg = AS3722_LDOCONTROL0_REG, |
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.enable_mask = AS3722_LDO6_CTRL, |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, |
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.sleep_ctrl_mask = AS3722_LDO6_EXT_ENABLE_MASK, |
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.n_voltages = AS3722_LDO_NUM_VOLT, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_LDO7, |
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.name = "as3722-ldo7", |
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.sname = "vin-ldo2-5-7", |
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.vsel_reg = AS3722_LDO7_VOLTAGE_REG, |
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.vsel_mask = AS3722_LDO_VSEL_MASK, |
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.enable_reg = AS3722_LDOCONTROL0_REG, |
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.enable_mask = AS3722_LDO7_CTRL, |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, |
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.sleep_ctrl_mask = AS3722_LDO7_EXT_ENABLE_MASK, |
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.n_voltages = AS3722_LDO_NUM_VOLT, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_LDO9, |
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.name = "as3722-ldo9", |
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.sname = "vin-ldo9-10", |
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.vsel_reg = AS3722_LDO9_VOLTAGE_REG, |
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.vsel_mask = AS3722_LDO_VSEL_MASK, |
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.enable_reg = AS3722_LDOCONTROL1_REG, |
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.enable_mask = AS3722_LDO9_CTRL, |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG, |
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.sleep_ctrl_mask = AS3722_LDO9_EXT_ENABLE_MASK, |
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.n_voltages = AS3722_LDO_NUM_VOLT, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_LDO10, |
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.name = "as3722-ldo10", |
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.sname = "vin-ldo9-10", |
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.vsel_reg = AS3722_LDO10_VOLTAGE_REG, |
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.vsel_mask = AS3722_LDO_VSEL_MASK, |
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.enable_reg = AS3722_LDOCONTROL1_REG, |
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.enable_mask = AS3722_LDO10_CTRL, |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG, |
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.sleep_ctrl_mask = AS3722_LDO10_EXT_ENABLE_MASK, |
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.n_voltages = AS3722_LDO_NUM_VOLT, |
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}, |
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{ |
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.regulator_id = AS3722_REGULATOR_ID_LDO11, |
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.name = "as3722-ldo11", |
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.sname = "vin-ldo11", |
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.vsel_reg = AS3722_LDO11_VOLTAGE_REG, |
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.vsel_mask = AS3722_LDO_VSEL_MASK, |
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.enable_reg = AS3722_LDOCONTROL1_REG, |
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.enable_mask = AS3722_LDO11_CTRL, |
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG, |
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.sleep_ctrl_mask = AS3722_LDO11_EXT_ENABLE_MASK, |
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.n_voltages = AS3722_LDO_NUM_VOLT, |
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}, |
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}; |
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static const unsigned int as3722_ldo_current[] = { 150000, 300000 }; |
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static const unsigned int as3722_sd016_current[] = { |
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2500000, 3000000, 3500000 |
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}; |
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static const struct regulator_ops as3722_ldo0_ops = { |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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.list_voltage = regulator_list_voltage_linear, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.get_current_limit = regulator_get_current_limit_regmap, |
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.set_current_limit = regulator_set_current_limit_regmap, |
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}; |
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static const struct regulator_ops as3722_ldo0_extcntrl_ops = { |
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.list_voltage = regulator_list_voltage_linear, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.get_current_limit = regulator_get_current_limit_regmap, |
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.set_current_limit = regulator_set_current_limit_regmap, |
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}; |
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static int as3722_ldo3_set_tracking_mode(struct as3722_regulators *as3722_reg, |
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int id, u8 mode) |
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{ |
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struct as3722 *as3722 = as3722_reg->as3722; |
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switch (mode) { |
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case AS3722_LDO3_MODE_PMOS: |
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case AS3722_LDO3_MODE_PMOS_TRACKING: |
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case AS3722_LDO3_MODE_NMOS: |
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case AS3722_LDO3_MODE_SWITCH: |
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return as3722_update_bits(as3722, |
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as3722_reg_lookup[id].vsel_reg, |
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AS3722_LDO3_MODE_MASK, mode); |
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default: |
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return -EINVAL; |
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} |
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} |
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static int as3722_ldo3_get_current_limit(struct regulator_dev *rdev) |
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{ |
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return 150000; |
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} |
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static const struct regulator_ops as3722_ldo3_ops = { |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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.list_voltage = regulator_list_voltage_linear, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.get_current_limit = as3722_ldo3_get_current_limit, |
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}; |
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static const struct regulator_ops as3722_ldo3_extcntrl_ops = { |
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.list_voltage = regulator_list_voltage_linear, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.get_current_limit = as3722_ldo3_get_current_limit, |
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}; |
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|
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static const struct regulator_ops as3722_ldo6_ops = { |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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.map_voltage = regulator_map_voltage_linear_range, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.list_voltage = regulator_list_voltage_linear_range, |
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.get_current_limit = regulator_get_current_limit_regmap, |
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.set_current_limit = regulator_set_current_limit_regmap, |
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.get_bypass = regulator_get_bypass_regmap, |
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.set_bypass = regulator_set_bypass_regmap, |
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}; |
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|
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static const struct regulator_ops as3722_ldo6_extcntrl_ops = { |
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.map_voltage = regulator_map_voltage_linear_range, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.list_voltage = regulator_list_voltage_linear_range, |
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.get_current_limit = regulator_get_current_limit_regmap, |
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.set_current_limit = regulator_set_current_limit_regmap, |
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.get_bypass = regulator_get_bypass_regmap, |
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.set_bypass = regulator_set_bypass_regmap, |
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}; |
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|
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static const struct linear_range as3722_ldo_ranges[] = { |
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REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0), |
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REGULATOR_LINEAR_RANGE(825000, 0x01, 0x24, 25000), |
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REGULATOR_LINEAR_RANGE(1725000, 0x40, 0x7F, 25000), |
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}; |
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|
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static const struct regulator_ops as3722_ldo_ops = { |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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.map_voltage = regulator_map_voltage_linear_range, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.list_voltage = regulator_list_voltage_linear_range, |
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.get_current_limit = regulator_get_current_limit_regmap, |
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.set_current_limit = regulator_set_current_limit_regmap, |
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}; |
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|
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static const struct regulator_ops as3722_ldo_extcntrl_ops = { |
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.map_voltage = regulator_map_voltage_linear_range, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.list_voltage = regulator_list_voltage_linear_range, |
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.get_current_limit = regulator_get_current_limit_regmap, |
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.set_current_limit = regulator_set_current_limit_regmap, |
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}; |
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|
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static unsigned int as3722_sd_get_mode(struct regulator_dev *rdev) |
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{ |
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struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev); |
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struct as3722 *as3722 = as3722_regs->as3722; |
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int id = rdev_get_id(rdev); |
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u32 val; |
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int ret; |
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|
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if (!as3722_reg_lookup[id].control_reg) |
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return -ENOTSUPP; |
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|
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ret = as3722_read(as3722, as3722_reg_lookup[id].control_reg, &val); |
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if (ret < 0) { |
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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; |
|
fallthrough; |
|
case REGULATOR_MODE_NORMAL: |
|
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 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 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 const 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 = regulator_get_current_limit_regmap, |
|
.set_current_limit = regulator_set_current_limit_regmap, |
|
.get_mode = as3722_sd_get_mode, |
|
.set_mode = as3722_sd_set_mode, |
|
}; |
|
|
|
static const 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 = regulator_get_current_limit_regmap, |
|
.set_current_limit = regulator_set_current_limit_regmap, |
|
.get_mode = as3722_sd_get_mode, |
|
.set_mode = as3722_sd_set_mode, |
|
}; |
|
|
|
static const 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 const 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 = { }; |
|
const 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++) { |
|
struct regulator_desc *desc; |
|
|
|
desc = &as3722_regs->desc[id]; |
|
reg_config = &as3722_regs->reg_config_data[id]; |
|
|
|
desc->name = as3722_reg_lookup[id].name; |
|
desc->supply_name = as3722_reg_lookup[id].sname; |
|
desc->id = as3722_reg_lookup[id].regulator_id; |
|
desc->n_voltages = as3722_reg_lookup[id].n_voltages; |
|
desc->type = REGULATOR_VOLTAGE; |
|
desc->owner = THIS_MODULE; |
|
desc->enable_reg = as3722_reg_lookup[id].enable_reg; |
|
desc->enable_mask = as3722_reg_lookup[id].enable_mask; |
|
desc->vsel_reg = as3722_reg_lookup[id].vsel_reg; |
|
desc->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; |
|
desc->min_uV = 825000; |
|
desc->uV_step = 25000; |
|
desc->linear_min_sel = 1; |
|
desc->enable_time = 500; |
|
desc->curr_table = as3722_ldo_current; |
|
desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current); |
|
desc->csel_reg = as3722_reg_lookup[id].vsel_reg; |
|
desc->csel_mask = AS3722_LDO_ILIMIT_MASK; |
|
break; |
|
case AS3722_REGULATOR_ID_LDO3: |
|
if (reg_config->ext_control) |
|
ops = &as3722_ldo3_extcntrl_ops; |
|
else |
|
ops = &as3722_ldo3_ops; |
|
desc->min_uV = 620000; |
|
desc->uV_step = 20000; |
|
desc->linear_min_sel = 1; |
|
desc->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_LDO6: |
|
if (reg_config->ext_control) |
|
ops = &as3722_ldo6_extcntrl_ops; |
|
else |
|
ops = &as3722_ldo6_ops; |
|
desc->enable_time = 500; |
|
desc->bypass_reg = AS3722_LDO6_VOLTAGE_REG; |
|
desc->bypass_mask = AS3722_LDO_VSEL_MASK; |
|
desc->bypass_val_on = AS3722_LDO6_VSEL_BYPASS; |
|
desc->bypass_val_off = AS3722_LDO6_VSEL_BYPASS; |
|
desc->linear_ranges = as3722_ldo_ranges; |
|
desc->n_linear_ranges = ARRAY_SIZE(as3722_ldo_ranges); |
|
desc->curr_table = as3722_ldo_current; |
|
desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current); |
|
desc->csel_reg = as3722_reg_lookup[id].vsel_reg; |
|
desc->csel_mask = AS3722_LDO_ILIMIT_MASK; |
|
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; |
|
} |
|
desc->uV_step = 10000; |
|
desc->linear_min_sel = 1; |
|
desc->enable_time = 600; |
|
desc->curr_table = as3722_sd016_current; |
|
desc->n_current_limits = |
|
ARRAY_SIZE(as3722_sd016_current); |
|
if (id == AS3722_REGULATOR_ID_SD0) { |
|
desc->csel_reg = AS3722_OVCURRENT_REG; |
|
desc->csel_mask = |
|
AS3722_OVCURRENT_SD0_TRIP_MASK; |
|
} else if (id == AS3722_REGULATOR_ID_SD1) { |
|
desc->csel_reg = AS3722_OVCURRENT_REG; |
|
desc->csel_mask = |
|
AS3722_OVCURRENT_SD1_TRIP_MASK; |
|
} else if (id == AS3722_REGULATOR_ID_SD6) { |
|
desc->csel_reg = AS3722_OVCURRENT_DEB_REG; |
|
desc->csel_mask = |
|
AS3722_OVCURRENT_SD6_TRIP_MASK; |
|
} |
|
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; |
|
desc->linear_ranges = as3722_sd2345_ranges; |
|
desc->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; |
|
desc->enable_time = 500; |
|
desc->linear_ranges = as3722_ldo_ranges; |
|
desc->n_linear_ranges = ARRAY_SIZE(as3722_ldo_ranges); |
|
desc->curr_table = as3722_ldo_current; |
|
desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current); |
|
desc->csel_reg = as3722_reg_lookup[id].vsel_reg; |
|
desc->csel_mask = AS3722_LDO_ILIMIT_MASK; |
|
break; |
|
} |
|
desc->ops = ops; |
|
config.init_data = reg_config->reg_init; |
|
config.of_node = as3722_regulator_matches[id].of_node; |
|
rdev = devm_regulator_register(&pdev->dev, desc, &config); |
|
if (IS_ERR(rdev)) { |
|
ret = PTR_ERR(rdev); |
|
dev_err(&pdev->dev, "regulator %d register failed %d\n", |
|
id, ret); |
|
return ret; |
|
} |
|
|
|
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", |
|
.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 <[email protected]>"); |
|
MODULE_AUTHOR("Laxman Dewangan <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|