// SPDX-License-Identifier: GPL-2.0-only /* * Regulator driver for National Semiconductors LP3971 PMIC chip * * Copyright (C) 2009 Samsung Electronics * Author: Marek Szyprowski <[email protected]> * * Based on wm8350.c */ #include <linux/bug.h> #include <linux/err.h> #include <linux/i2c.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/regulator/driver.h> #include <linux/regulator/lp3971.h> #include <linux/slab.h> struct lp3971 { … }; static u8 lp3971_reg_read(struct lp3971 *lp3971, u8 reg); static int lp3971_set_bits(struct lp3971 *lp3971, u8 reg, u16 mask, u16 val); #define LP3971_SYS_CONTROL1_REG … /* System control register 1 initial value, bits 4 and 5 are EPROM programmable */ #define SYS_CONTROL1_INIT_VAL … #define SYS_CONTROL1_INIT_MASK … #define LP3971_BUCK_VOL_ENABLE_REG … #define LP3971_BUCK_VOL_CHANGE_REG … /* Voltage control registers shift: LP3971_BUCK1 -> 0 LP3971_BUCK2 -> 4 LP3971_BUCK3 -> 6 */ #define BUCK_VOL_CHANGE_SHIFT(x) … #define BUCK_VOL_CHANGE_FLAG_GO … #define BUCK_VOL_CHANGE_FLAG_TARGET … #define BUCK_VOL_CHANGE_FLAG_MASK … #define LP3971_BUCK1_BASE … #define LP3971_BUCK2_BASE … #define LP3971_BUCK3_BASE … static const int buck_base_addr[] = …; #define LP3971_BUCK_TARGET_VOL1_REG(x) … #define LP3971_BUCK_TARGET_VOL2_REG(x) … static const unsigned int buck_voltage_map[] = …; #define BUCK_TARGET_VOL_MASK … #define LP3971_BUCK_RAMP_REG(x) … #define LP3971_LDO_ENABLE_REG … #define LP3971_LDO_VOL_CONTR_BASE … /* Voltage control registers: LP3971_LDO1 -> LP3971_LDO_VOL_CONTR_BASE + 0 LP3971_LDO2 -> LP3971_LDO_VOL_CONTR_BASE + 0 LP3971_LDO3 -> LP3971_LDO_VOL_CONTR_BASE + 1 LP3971_LDO4 -> LP3971_LDO_VOL_CONTR_BASE + 1 LP3971_LDO5 -> LP3971_LDO_VOL_CONTR_BASE + 2 */ #define LP3971_LDO_VOL_CONTR_REG(x) … /* Voltage control registers shift: LP3971_LDO1 -> 0, LP3971_LDO2 -> 4 LP3971_LDO3 -> 0, LP3971_LDO4 -> 4 LP3971_LDO5 -> 0 */ #define LDO_VOL_CONTR_SHIFT(x) … #define LDO_VOL_CONTR_MASK … static const unsigned int ldo45_voltage_map[] = …; static const unsigned int ldo123_voltage_map[] = …; #define LDO_VOL_MIN_IDX … #define LDO_VOL_MAX_IDX … static int lp3971_ldo_is_enabled(struct regulator_dev *dev) { … } static int lp3971_ldo_enable(struct regulator_dev *dev) { … } static int lp3971_ldo_disable(struct regulator_dev *dev) { … } static int lp3971_ldo_get_voltage_sel(struct regulator_dev *dev) { … } static int lp3971_ldo_set_voltage_sel(struct regulator_dev *dev, unsigned int selector) { … } static const struct regulator_ops lp3971_ldo_ops = …; static int lp3971_dcdc_is_enabled(struct regulator_dev *dev) { … } static int lp3971_dcdc_enable(struct regulator_dev *dev) { … } static int lp3971_dcdc_disable(struct regulator_dev *dev) { … } static int lp3971_dcdc_get_voltage_sel(struct regulator_dev *dev) { … } static int lp3971_dcdc_set_voltage_sel(struct regulator_dev *dev, unsigned int selector) { … } static const struct regulator_ops lp3971_dcdc_ops = …; static const struct regulator_desc regulators[] = …; static int lp3971_i2c_read(struct i2c_client *i2c, char reg, int count, u16 *dest) { … } static int lp3971_i2c_write(struct i2c_client *i2c, char reg, int count, const u16 *src) { … } static u8 lp3971_reg_read(struct lp3971 *lp3971, u8 reg) { … } static int lp3971_set_bits(struct lp3971 *lp3971, u8 reg, u16 mask, u16 val) { … } static int setup_regulators(struct lp3971 *lp3971, struct lp3971_platform_data *pdata) { … } static int lp3971_i2c_probe(struct i2c_client *i2c) { … } static const struct i2c_device_id lp3971_i2c_id[] = …; MODULE_DEVICE_TABLE(i2c, lp3971_i2c_id); static struct i2c_driver lp3971_i2c_driver = …; module_i2c_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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