// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2012 Texas Instruments * * Author: Milo(Woogyom) Kim <[email protected]> */ #include <linux/module.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/regmap.h> #include <linux/err.h> #include <linux/gpio/consumer.h> #include <linux/delay.h> #include <linux/regulator/lp872x.h> #include <linux/regulator/driver.h> #include <linux/platform_device.h> #include <linux/of.h> #include <linux/regulator/of_regulator.h> /* Registers : LP8720/8725 shared */ #define LP872X_GENERAL_CFG … #define LP872X_LDO1_VOUT … #define LP872X_LDO2_VOUT … #define LP872X_LDO3_VOUT … #define LP872X_LDO4_VOUT … #define LP872X_LDO5_VOUT … /* Registers : LP8720 */ #define LP8720_BUCK_VOUT1 … #define LP8720_BUCK_VOUT2 … #define LP8720_ENABLE … /* Registers : LP8725 */ #define LP8725_LILO1_VOUT … #define LP8725_LILO2_VOUT … #define LP8725_BUCK1_VOUT1 … #define LP8725_BUCK1_VOUT2 … #define LP8725_BUCK2_VOUT1 … #define LP8725_BUCK2_VOUT2 … #define LP8725_BUCK_CTRL … #define LP8725_LDO_CTRL … /* Mask/shift : LP8720/LP8725 shared */ #define LP872X_VOUT_M … #define LP872X_START_DELAY_M … #define LP872X_START_DELAY_S … #define LP872X_EN_LDO1_M … #define LP872X_EN_LDO2_M … #define LP872X_EN_LDO3_M … #define LP872X_EN_LDO4_M … #define LP872X_EN_LDO5_M … /* Mask/shift : LP8720 */ #define LP8720_TIMESTEP_S … #define LP8720_TIMESTEP_M … #define LP8720_EXT_DVS_M … #define LP8720_BUCK_FPWM_S … #define LP8720_BUCK_FPWM_M … #define LP8720_EN_BUCK_M … #define LP8720_DVS_SEL_M … /* Mask/shift : LP8725 */ #define LP8725_TIMESTEP_M … #define LP8725_TIMESTEP_S … #define LP8725_BUCK1_EN_M … #define LP8725_DVS1_M … #define LP8725_DVS2_M … #define LP8725_BUCK2_EN_M … #define LP8725_BUCK_CL_M … #define LP8725_BUCK_CL_S … #define LP8725_BUCK1_FPWM_S … #define LP8725_BUCK1_FPWM_M … #define LP8725_BUCK2_FPWM_S … #define LP8725_BUCK2_FPWM_M … #define LP8725_EN_LILO1_M … #define LP8725_EN_LILO2_M … /* PWM mode */ #define LP872X_FORCE_PWM … #define LP872X_AUTO_PWM … #define LP8720_NUM_REGULATORS … #define LP8725_NUM_REGULATORS … #define EXTERN_DVS_USED … #define MAX_DELAY … /* Default DVS Mode */ #define LP8720_DEFAULT_DVS … #define LP8725_DEFAULT_DVS … /* dump registers in regmap-debugfs */ #define MAX_REGISTERS … enum lp872x_id { … }; struct lp872x { … }; /* LP8720/LP8725 shared voltage table for LDOs */ static const unsigned int lp872x_ldo_vtbl[] = …; /* LP8720 LDO4 voltage table */ static const unsigned int lp8720_ldo4_vtbl[] = …; /* LP8725 LILO(Low Input Low Output) voltage table */ static const unsigned int lp8725_lilo_vtbl[] = …; /* LP8720 BUCK voltage table */ #define EXT_R … static const unsigned int lp8720_buck_vtbl[] = …; /* LP8725 BUCK voltage table */ static const unsigned int lp8725_buck_vtbl[] = …; /* LP8725 BUCK current limit */ static const unsigned int lp8725_buck_uA[] = …; static int lp872x_read_byte(struct lp872x *lp, u8 addr, u8 *data) { … } static inline int lp872x_write_byte(struct lp872x *lp, u8 addr, u8 data) { … } static inline int lp872x_update_bits(struct lp872x *lp, u8 addr, unsigned int mask, u8 data) { … } static int lp872x_get_timestep_usec(struct lp872x *lp) { … } static int lp872x_regulator_enable_time(struct regulator_dev *rdev) { … } static void lp872x_set_dvs(struct lp872x *lp, enum lp872x_dvs_sel dvs_sel, struct gpio_desc *gpio) { … } static u8 lp872x_select_buck_vout_addr(struct lp872x *lp, enum lp872x_regulator_id buck) { … } static bool lp872x_is_valid_buck_addr(u8 addr) { … } static int lp872x_buck_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) { … } static int lp872x_buck_get_voltage_sel(struct regulator_dev *rdev) { … } static int lp872x_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) { … } static unsigned int lp872x_buck_get_mode(struct regulator_dev *rdev) { … } static const struct regulator_ops lp872x_ldo_ops = …; static const struct regulator_ops lp8720_buck_ops = …; static const struct regulator_ops lp8725_buck_ops = …; static const struct regulator_desc lp8720_regulator_desc[] = …; static const struct regulator_desc lp8725_regulator_desc[] = …; static int lp872x_init_dvs(struct lp872x *lp) { … } static int lp872x_hw_enable(struct lp872x *lp) { … } static int lp872x_config(struct lp872x *lp) { … } static struct regulator_init_data *lp872x_find_regulator_init_data(int id, struct lp872x *lp) { … } static int lp872x_regulator_register(struct lp872x *lp) { … } static const struct regmap_config lp872x_regmap_config = …; #ifdef CONFIG_OF #define LP872X_VALID_OPMODE … static struct of_regulator_match lp8720_matches[] = …; static struct of_regulator_match lp8725_matches[] = …; static struct lp872x_platform_data *lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which) { … } #else static struct lp872x_platform_data *lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which) { return NULL; } #endif static int lp872x_probe(struct i2c_client *cl) { … } static const struct of_device_id lp872x_dt_ids[] __maybe_unused = …; MODULE_DEVICE_TABLE(of, lp872x_dt_ids); static const struct i2c_device_id lp872x_ids[] = …; MODULE_DEVICE_TABLE(i2c, lp872x_ids); static struct i2c_driver lp872x_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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