1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 * internal.h  --  Voltage/Current Regulator framework internal code
  4 *
  5 * Copyright 2007, 2008 Wolfson Microelectronics PLC.
  6 * Copyright 2008 SlimLogic Ltd.
  7 *
  8 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
  9 */
 10
 11#ifndef __REGULATOR_INTERNAL_H
 12#define __REGULATOR_INTERNAL_H
 13
 14#include <linux/suspend.h>
 15
 16#define REGULATOR_STATES_NUM	(PM_SUSPEND_MAX + 1)
 17
 18struct regulator_voltage {
 19	int min_uV;
 20	int max_uV;
 21};
 22
 23/*
 24 * struct regulator
 25 *
 26 * One for each consumer device.
 27 * @voltage - a voltage array for each state of runtime, i.e.:
 28 *            PM_SUSPEND_ON
 29 *            PM_SUSPEND_TO_IDLE
 30 *            PM_SUSPEND_STANDBY
 31 *            PM_SUSPEND_MEM
 32 *            PM_SUSPEND_MAX
 33 */
 34struct regulator {
 35	struct device *dev;
 36	struct list_head list;
 37	unsigned int always_on:1;
 38	unsigned int bypass:1;
 39	int uA_load;
 40	unsigned int enable_count;
 41	unsigned int deferred_disables;
 42	struct regulator_voltage voltage[REGULATOR_STATES_NUM];
 43	const char *supply_name;
 44	struct device_attribute dev_attr;
 45	struct regulator_dev *rdev;
 46	struct dentry *debugfs;
 47};
 48
 49extern struct class regulator_class;
 50
 51static inline struct regulator_dev *dev_to_rdev(struct device *dev)
 52{
 53	return container_of(dev, struct regulator_dev, dev);
 54}
 55
 56#ifdef CONFIG_OF
 57struct regulator_dev *of_find_regulator_by_node(struct device_node *np);
 58struct regulator_init_data *regulator_of_get_init_data(struct device *dev,
 59			         const struct regulator_desc *desc,
 60				 struct regulator_config *config,
 61				 struct device_node **node);
 62
 63struct regulator_dev *of_parse_coupled_regulator(struct regulator_dev *rdev,
 64						 int index);
 65
 66int of_get_n_coupled(struct regulator_dev *rdev);
 67
 68bool of_check_coupling_data(struct regulator_dev *rdev);
 69
 70#else
 71static inline struct regulator_dev *
 72of_find_regulator_by_node(struct device_node *np)
 73{
 74	return NULL;
 75}
 76
 77static inline struct regulator_init_data *
 78regulator_of_get_init_data(struct device *dev,
 79			   const struct regulator_desc *desc,
 80			   struct regulator_config *config,
 81			   struct device_node **node)
 82{
 83	return NULL;
 84}
 85
 86static inline struct regulator_dev *
 87of_parse_coupled_regulator(struct regulator_dev *rdev,
 88			   int index)
 89{
 90	return NULL;
 91}
 92
 93static inline int of_get_n_coupled(struct regulator_dev *rdev)
 94{
 95	return 0;
 96}
 97
 98static inline bool of_check_coupling_data(struct regulator_dev *rdev)
 99{
100	return false;
101}
102
103#endif
104enum regulator_get_type {
105	NORMAL_GET,
106	EXCLUSIVE_GET,
107	OPTIONAL_GET,
108	MAX_GET_TYPE
109};
110
111struct regulator *_regulator_get(struct device *dev, const char *id,
112				 enum regulator_get_type get_type);
113#endif