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 18 #define rdev_crit(rdev, fmt, ...) \ 19 pr_crit("%s: " fmt, rdev_get_name(rdev), ##__VA_ARGS__) 20 #define rdev_err(rdev, fmt, ...) \ 21 pr_err("%s: " fmt, rdev_get_name(rdev), ##__VA_ARGS__) 22 #define rdev_warn(rdev, fmt, ...) \ 23 pr_warn("%s: " fmt, rdev_get_name(rdev), ##__VA_ARGS__) 24 #define rdev_info(rdev, fmt, ...) \ 25 pr_info("%s: " fmt, rdev_get_name(rdev), ##__VA_ARGS__) 26 #define rdev_dbg(rdev, fmt, ...) \ 27 pr_debug("%s: " fmt, rdev_get_name(rdev), ##__VA_ARGS__) 28 29 struct regulator_voltage { 30 int min_uV; 31 int max_uV; 32 }; 33 34 /* 35 * struct regulator 36 * 37 * One for each consumer device. 38 * @voltage - a voltage array for each state of runtime, i.e.: 39 * PM_SUSPEND_ON 40 * PM_SUSPEND_TO_IDLE 41 * PM_SUSPEND_STANDBY 42 * PM_SUSPEND_MEM 43 * PM_SUSPEND_MAX 44 */ 45 struct regulator { 46 struct device *dev; 47 struct list_head list; 48 unsigned int always_on:1; 49 unsigned int bypass:1; 50 unsigned int device_link:1; 51 int uA_load; 52 unsigned int enable_count; 53 unsigned int deferred_disables; 54 struct regulator_voltage voltage[REGULATOR_STATES_NUM]; 55 const char *supply_name; 56 struct device_attribute dev_attr; 57 struct regulator_dev *rdev; 58 struct dentry *debugfs; 59 }; 60 61 extern const struct class regulator_class; 62 63 static inline struct regulator_dev *dev_to_rdev(struct device *dev) 64 { 65 return container_of(dev, struct regulator_dev, dev); 66 } 67 68 #ifdef CONFIG_OF 69 struct regulator_dev *of_regulator_dev_lookup(struct device *dev, 70 const char *supply); 71 struct regulator_init_data *regulator_of_get_init_data(struct device *dev, 72 const struct regulator_desc *desc, 73 struct regulator_config *config, 74 struct device_node **node); 75 76 struct regulator_dev *of_parse_coupled_regulator(struct regulator_dev *rdev, 77 int index); 78 79 int of_get_n_coupled(struct regulator_dev *rdev); 80 81 bool of_check_coupling_data(struct regulator_dev *rdev); 82 83 #else 84 static inline struct regulator_dev *of_regulator_dev_lookup(struct device *dev, 85 const char *supply) 86 { 87 return ERR_PTR(-ENODEV); 88 } 89 90 static inline struct regulator_init_data * 91 regulator_of_get_init_data(struct device *dev, 92 const struct regulator_desc *desc, 93 struct regulator_config *config, 94 struct device_node **node) 95 { 96 return NULL; 97 } 98 99 static inline struct regulator_dev * 100 of_parse_coupled_regulator(struct regulator_dev *rdev, 101 int index) 102 { 103 return NULL; 104 } 105 106 static inline int of_get_n_coupled(struct regulator_dev *rdev) 107 { 108 return 0; 109 } 110 111 static inline bool of_check_coupling_data(struct regulator_dev *rdev) 112 { 113 return false; 114 } 115 116 #endif 117 enum regulator_get_type { 118 NORMAL_GET, 119 EXCLUSIVE_GET, 120 OPTIONAL_GET, 121 MAX_GET_TYPE 122 }; 123 124 int _regulator_get_common_check(struct device *dev, const char *id, 125 enum regulator_get_type get_type); 126 struct regulator *_regulator_get_common(struct regulator_dev *rdev, struct device *dev, 127 const char *id, enum regulator_get_type get_type); 128 struct regulator *_regulator_get(struct device *dev, const char *id, 129 enum regulator_get_type get_type); 130 int _regulator_bulk_get(struct device *dev, int num_consumers, 131 struct regulator_bulk_data *consumers, enum regulator_get_type get_type); 132 #endif 133