Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
[linux-2.6-microblaze.git] / drivers / regulator / internal.h
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
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 *
75 of_find_regulator_by_node(struct device_node *np)
76 {
77         return NULL;
78 }
79
80 static inline struct regulator_init_data *
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 *
90 of_parse_coupled_regulator(struct regulator_dev *rdev,
91                            int index)
92 {
93         return NULL;
94 }
95
96 static inline int of_get_n_coupled(struct regulator_dev *rdev)
97 {
98         return 0;
99 }
100
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