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
23struct 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 */
39struct 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
52extern struct class regulator_class;
53
54static inline struct regulator_dev *dev_to_rdev(struct device *dev)
55{
56	return container_of(dev, struct regulator_dev, dev);
57}
58
59struct regulator_dev *of_find_regulator_by_node(struct device_node *np);
60
61#ifdef CONFIG_OF
62struct regulator_init_data *regulator_of_get_init_data(struct device *dev,
63			         const struct regulator_desc *desc,
64				 struct regulator_config *config,
65				 struct device_node **node);
66#else
67static inline struct regulator_init_data *
68regulator_of_get_init_data(struct device *dev,
69			   const struct regulator_desc *desc,
70			   struct regulator_config *config,
71			   struct device_node **node)
72{
73	return NULL;
74}
75#endif
76
77enum regulator_get_type {
78	NORMAL_GET,
79	EXCLUSIVE_GET,
80	OPTIONAL_GET,
81	MAX_GET_TYPE
82};
83
84struct regulator *_regulator_get(struct device *dev, const char *id,
85				 enum regulator_get_type get_type);
86
87#endif