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
dev_to_rdev(struct device * dev)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 *
of_find_regulator_by_node(struct device_node * np)73 of_find_regulator_by_node(struct device_node *np)
74 {
75 return NULL;
76 }
77
78 static inline struct regulator_init_data *
regulator_of_get_init_data(struct device * dev,const struct regulator_desc * desc,struct regulator_config * config,struct device_node ** node)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 *
of_parse_coupled_regulator(struct regulator_dev * rdev,int index)88 of_parse_coupled_regulator(struct regulator_dev *rdev,
89 int index)
90 {
91 return NULL;
92 }
93
of_get_n_coupled(struct regulator_dev * rdev)94 static inline int of_get_n_coupled(struct regulator_dev *rdev)
95 {
96 return 0;
97 }
98
of_check_coupling_data(struct regulator_dev * rdev)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