1 /*
2 * internal.h -- Voltage/Current Regulator framework internal code
3 *
4 * Copyright 2007, 2008 Wolfson Microelectronics PLC.
5 * Copyright 2008 SlimLogic Ltd.
6 *
7 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 *
14 */
15
16 #ifndef __REGULATOR_INTERNAL_H
17 #define __REGULATOR_INTERNAL_H
18
19 #include <linux/suspend.h>
20
21 #define REGULATOR_STATES_NUM (PM_SUSPEND_MAX + 1)
22
23 struct regulator_voltage {
24 int min_uV;
25 int max_uV;
26 };
27
28 /*
29 * struct regulator
30 *
31 * One for each consumer device.
32 * @voltage - a voltage array for each state of runtime, i.e.:
33 * PM_SUSPEND_ON
34 * PM_SUSPEND_TO_IDLE
35 * PM_SUSPEND_STANDBY
36 * PM_SUSPEND_MEM
37 * PM_SUSPEND_MAX
38 */
39 struct regulator {
40 struct device *dev;
41 struct list_head list;
42 unsigned int always_on:1;
43 unsigned int bypass:1;
44 int uA_load;
45 struct regulator_voltage voltage[REGULATOR_STATES_NUM];
46 const char *supply_name;
47 struct device_attribute dev_attr;
48 struct regulator_dev *rdev;
49 struct dentry *debugfs;
50 };
51
52 extern struct class regulator_class;
53
dev_to_rdev(struct device * dev)54 static inline struct regulator_dev *dev_to_rdev(struct device *dev)
55 {
56 return container_of(dev, struct regulator_dev, dev);
57 }
58
59 #ifdef CONFIG_OF
60 struct regulator_dev *of_find_regulator_by_node(struct device_node *np);
61 struct regulator_init_data *regulator_of_get_init_data(struct device *dev,
62 const struct regulator_desc *desc,
63 struct regulator_config *config,
64 struct device_node **node);
65
66 struct regulator_dev *of_parse_coupled_regulator(struct regulator_dev *rdev,
67 int index);
68
69 int of_get_n_coupled(struct regulator_dev *rdev);
70
71 bool of_check_coupling_data(struct regulator_dev *rdev);
72
73 #else
74 static inline struct regulator_dev *
of_find_regulator_by_node(struct device_node * np)75 of_find_regulator_by_node(struct device_node *np)
76 {
77 return NULL;
78 }
79
80 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)81 regulator_of_get_init_data(struct device *dev,
82 const struct regulator_desc *desc,
83 struct regulator_config *config,
84 struct device_node **node)
85 {
86 return NULL;
87 }
88
89 static inline struct regulator_dev *
of_parse_coupled_regulator(struct regulator_dev * rdev,int index)90 of_parse_coupled_regulator(struct regulator_dev *rdev,
91 int index)
92 {
93 return NULL;
94 }
95
of_get_n_coupled(struct regulator_dev * rdev)96 static inline int of_get_n_coupled(struct regulator_dev *rdev)
97 {
98 return 0;
99 }
100
of_check_coupling_data(struct regulator_dev * rdev)101 static inline bool of_check_coupling_data(struct regulator_dev *rdev)
102 {
103 return false;
104 }
105
106 #endif
107 enum regulator_get_type {
108 NORMAL_GET,
109 EXCLUSIVE_GET,
110 OPTIONAL_GET,
111 MAX_GET_TYPE
112 };
113
114 struct regulator *_regulator_get(struct device *dev, const char *id,
115 enum regulator_get_type get_type);
116 #endif
117