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 struct 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 */ 34 struct regulator { 35 struct device *dev; 36 struct list_head list; 37 unsigned int always_on:1; 38 unsigned int bypass:1; 39 unsigned int device_link:1; 40 int uA_load; 41 unsigned int enable_count; 42 unsigned int deferred_disables; 43 struct regulator_voltage voltage[REGULATOR_STATES_NUM]; 44 const char *supply_name; 45 struct device_attribute dev_attr; 46 struct regulator_dev *rdev; 47 struct dentry *debugfs; 48 }; 49 50 extern struct class regulator_class; 51 52 static inline struct regulator_dev *dev_to_rdev(struct device *dev) 53 { 54 return container_of(dev, struct regulator_dev, dev); 55 } 56 57 #ifdef CONFIG_OF 58 struct regulator_dev *of_find_regulator_by_node(struct device_node *np); 59 struct regulator_init_data *regulator_of_get_init_data(struct device *dev, 60 const struct regulator_desc *desc, 61 struct regulator_config *config, 62 struct device_node **node); 63 64 struct regulator_dev *of_parse_coupled_regulator(struct regulator_dev *rdev, 65 int index); 66 67 int of_get_n_coupled(struct regulator_dev *rdev); 68 69 bool of_check_coupling_data(struct regulator_dev *rdev); 70 71 #else 72 static inline struct regulator_dev * 73 of_find_regulator_by_node(struct device_node *np) 74 { 75 return NULL; 76 } 77 78 static inline struct regulator_init_data * 79 regulator_of_get_init_data(struct device *dev, 80 const struct regulator_desc *desc, 81 struct regulator_config *config, 82 struct device_node **node) 83 { 84 return NULL; 85 } 86 87 static inline struct regulator_dev * 88 of_parse_coupled_regulator(struct regulator_dev *rdev, 89 int index) 90 { 91 return NULL; 92 } 93 94 static inline int of_get_n_coupled(struct regulator_dev *rdev) 95 { 96 return 0; 97 } 98 99 static inline bool of_check_coupling_data(struct regulator_dev *rdev) 100 { 101 return false; 102 } 103 104 #endif 105 enum regulator_get_type { 106 NORMAL_GET, 107 EXCLUSIVE_GET, 108 OPTIONAL_GET, 109 MAX_GET_TYPE 110 }; 111 112 struct regulator *_regulator_get(struct device *dev, const char *id, 113 enum regulator_get_type get_type); 114 #endif 115