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 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 49 extern struct class regulator_class; 50 51 static 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 57 struct regulator_dev *of_find_regulator_by_node(struct device_node *np); 58 struct 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 63 struct regulator_dev *of_parse_coupled_regulator(struct regulator_dev *rdev, 64 int index); 65 66 int of_get_n_coupled(struct regulator_dev *rdev); 67 68 bool of_check_coupling_data(struct regulator_dev *rdev); 69 70 #else 71 static inline struct regulator_dev * 72 of_find_regulator_by_node(struct device_node *np) 73 { 74 return NULL; 75 } 76 77 static inline struct regulator_init_data * 78 regulator_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 86 static inline struct regulator_dev * 87 of_parse_coupled_regulator(struct regulator_dev *rdev, 88 int index) 89 { 90 return NULL; 91 } 92 93 static inline int of_get_n_coupled(struct regulator_dev *rdev) 94 { 95 return 0; 96 } 97 98 static inline bool of_check_coupling_data(struct regulator_dev *rdev) 99 { 100 return false; 101 } 102 103 #endif 104 enum regulator_get_type { 105 NORMAL_GET, 106 EXCLUSIVE_GET, 107 OPTIONAL_GET, 108 MAX_GET_TYPE 109 }; 110 111 struct regulator *_regulator_get(struct device *dev, const char *id, 112 enum regulator_get_type get_type); 113 #endif 114