Merge tag 'dmaengine-fix-5.2' of git://git.infradead.org/users/vkoul/slave-dma
[linux-2.6-microblaze.git] / drivers / regulator / internal.h
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