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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102/* SPDX-License-Identifier: GPL-2.0 *//* * coupler.h -- SoC Regulator support, coupler API. * * Regulator Coupler Interface. */
#ifndef __LINUX_REGULATOR_COUPLER_H_#define __LINUX_REGULATOR_COUPLER_H_
#include <linux/errno.h>#include <linux/types.h>#include <linux/suspend.h>
struct regulator_coupler;struct regulator_dev;
/** * struct regulator_coupler - customized regulator's coupler * * Regulator's coupler allows to customize coupling algorithm. * * @list: couplers list entry * @attach_regulator: Callback invoked on creation of a coupled regulator, * couples are unresolved at this point. The callee should * check that it could handle the regulator and return 0 on * success, -errno on failure and 1 if given regulator is * not suitable for this coupler (case of having multiple * regulators in a system). Callback shall be implemented. * @detach_regulator: Callback invoked on destruction of a coupled regulator. * This callback is optional and could be NULL. * @balance_voltage: Callback invoked when voltage of a coupled regulator is * changing. Called with all of the coupled rdev's being held * under "consumer lock". The callee should perform voltage * balancing, changing voltage of the coupled regulators as * needed. It's up to the coupler to verify the voltage * before changing it in hardware, i.e. coupler should * check consumer's min/max and etc. This callback is * optional and could be NULL, in which case a generic * voltage balancer will be used. */struct regulator_coupler { struct list_head list;
int (*attach_regulator)(struct regulator_coupler *coupler, struct regulator_dev *rdev); int (*detach_regulator)(struct regulator_coupler *coupler, struct regulator_dev *rdev); int (*balance_voltage)(struct regulator_coupler *coupler, struct regulator_dev *rdev, suspend_state_t state);};
#ifdef CONFIG_REGULATORint regulator_coupler_register(struct regulator_coupler *coupler);int regulator_check_consumers(struct regulator_dev *rdev, int *min_uV, int *max_uV, suspend_state_t state);int regulator_check_voltage(struct regulator_dev *rdev, int *min_uV, int *max_uV);int regulator_get_voltage_rdev(struct regulator_dev *rdev);int regulator_set_voltage_rdev(struct regulator_dev *rdev, int min_uV, int max_uV, suspend_state_t state);int regulator_do_balance_voltage(struct regulator_dev *rdev, suspend_state_t state, bool skip_coupled);#elsestatic inline int regulator_coupler_register(struct regulator_coupler *coupler){ return 0;}static inline int regulator_check_consumers(struct regulator_dev *rdev, int *min_uV, int *max_uV, suspend_state_t state){ return -EINVAL;}static inline int regulator_check_voltage(struct regulator_dev *rdev, int *min_uV, int *max_uV){ return -EINVAL;}static inline int regulator_get_voltage_rdev(struct regulator_dev *rdev){ return -EINVAL;}static inline int regulator_set_voltage_rdev(struct regulator_dev *rdev, int min_uV, int max_uV, suspend_state_t state){ return -EINVAL;}static inline int regulator_do_balance_voltage(struct regulator_dev *rdev, suspend_state_t state, bool skip_coupled){ return -EINVAL;}#endif
#endif