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/*
* Copyright (c) 2021, STMicroelectronics - All Rights Reserved
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef REGULATOR_H
#define REGULATOR_H
#include <platform_def.h>
#ifndef PLAT_NB_RDEVS
#error "Missing PLAT_NB_RDEVS"
#endif
/*
* Consumer interface
*/
/* regulator-always-on : regulator should never be disabled */
#define REGUL_ALWAYS_ON BIT(0)
/*
* regulator-boot-on:
* It's expected that this regulator was left on by the bootloader.
* The core shouldn't prevent it from being turned off later.
* The regulator is needed to exit from suspend so it is turned on during suspend entry.
*/
#define REGUL_BOOT_ON BIT(1)
/* regulator-over-current-protection: Enable over current protection. */
#define REGUL_OCP BIT(2)
/* regulator-active-discharge: enable active discharge. */
#define REGUL_ACTIVE_DISCHARGE BIT(3)
/* regulator-pull-down: Enable pull down resistor when the regulator is disabled. */
#define REGUL_PULL_DOWN BIT(4)
/*
* st,mask-reset: set mask reset for the regulator, meaning that the regulator
* setting is maintained during pmic reset.
*/
#define REGUL_MASK_RESET BIT(5)
/* st,regulator-sink-source: set the regulator in sink source mode */
#define REGUL_SINK_SOURCE BIT(6)
/* st,regulator-bypass: set the regulator in bypass mode */
#define REGUL_ENABLE_BYPASS BIT(7)
struct rdev *regulator_get_by_name(const char *node_name);
struct rdev *regulator_get_by_supply_name(const void *fdt, int node, const char *name);
int regulator_enable(struct rdev *rdev);
int regulator_disable(struct rdev *rdev);
int regulator_is_enabled(const struct rdev *rdev);
int regulator_set_voltage(struct rdev *rdev, uint16_t volt);
int regulator_set_min_voltage(struct rdev *rdev);
int regulator_get_voltage(const struct rdev *rdev);
int regulator_list_voltages(const struct rdev *rdev, const uint16_t **levels, size_t *count);
void regulator_get_range(const struct rdev *rdev, uint16_t *min_mv, uint16_t *max_mv);
int regulator_set_flag(struct rdev *rdev, uint16_t flag);
/*
* Driver Interface
*/
/* set_state() arguments */
#define STATE_DISABLE false
#define STATE_ENABLE true
struct regul_description {
const char *node_name;
const struct regul_ops *ops;
const void *driver_data;
const char *supply_name;
const uint32_t enable_ramp_delay;
};
struct regul_ops {
int (*set_state)(const struct regul_description *desc, bool state);
int (*get_state)(const struct regul_description *desc);
int (*set_voltage)(const struct regul_description *desc, uint16_t mv);
int (*get_voltage)(const struct regul_description *desc);
int (*list_voltages)(const struct regul_description *desc,
const uint16_t **levels, size_t *count);
int (*set_flag)(const struct regul_description *desc, uint16_t flag);
void (*lock)(const struct regul_description *desc);
void (*unlock)(const struct regul_description *desc);
};
int regulator_register(const struct regul_description *desc, int node);
/*
* Internal regulator structure
* The structure is internal to the core, and the content should not be used
* by a consumer nor a driver.
*/
struct rdev {
const struct regul_description *desc;
int32_t phandle;
uint16_t min_mv;
uint16_t max_mv;
uint16_t flags;
uint32_t enable_ramp_delay;
};
#endif /* REGULATOR_H */
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