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
dev_to_rdev(struct device * dev)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
of_regulator_dev_lookup(struct device * dev,const char * supply)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 *
regulator_of_get_init_data(struct device * dev,const struct regulator_desc * desc,struct regulator_config * config,struct device_node ** node)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 *
of_parse_coupled_regulator(struct regulator_dev * rdev,int index)100 of_parse_coupled_regulator(struct regulator_dev *rdev,
101 int index)
102 {
103 return NULL;
104 }
105
of_get_n_coupled(struct regulator_dev * rdev)106 static inline int of_get_n_coupled(struct regulator_dev *rdev)
107 {
108 return 0;
109 }
110
of_check_coupling_data(struct regulator_dev * rdev)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