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 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_find_regulator_by_node(struct device_node *np); 70 struct regulator_init_data *regulator_of_get_init_data(struct device *dev, 71 const struct regulator_desc *desc, 72 struct regulator_config *config, 73 struct device_node **node); 74 75 struct regulator_dev *of_parse_coupled_regulator(struct regulator_dev *rdev, 76 int index); 77 78 int of_get_n_coupled(struct regulator_dev *rdev); 79 80 bool of_check_coupling_data(struct regulator_dev *rdev); 81 82 #else 83 static inline struct regulator_dev * 84 of_find_regulator_by_node(struct device_node *np) 85 { 86 return NULL; 87 } 88 89 static inline struct regulator_init_data * 90 regulator_of_get_init_data(struct device *dev, 91 const struct regulator_desc *desc, 92 struct regulator_config *config, 93 struct device_node **node) 94 { 95 return NULL; 96 } 97 98 static inline struct regulator_dev * 99 of_parse_coupled_regulator(struct regulator_dev *rdev, 100 int index) 101 { 102 return NULL; 103 } 104 105 static inline int of_get_n_coupled(struct regulator_dev *rdev) 106 { 107 return 0; 108 } 109 110 static inline bool of_check_coupling_data(struct regulator_dev *rdev) 111 { 112 return false; 113 } 114 115 #endif 116 enum regulator_get_type { 117 NORMAL_GET, 118 EXCLUSIVE_GET, 119 OPTIONAL_GET, 120 MAX_GET_TYPE 121 }; 122 123 struct regulator *_regulator_get(struct device *dev, const char *id, 124 enum regulator_get_type get_type); 125 #endif 126