blob: 5aa00ee36a3d518cfede4d9f6861e2911f5e441a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/*
* machine.h -- SoC Regulator support, machine/board driver API.
*
* Copyright (C) 2007, 2008 Wolfson Microelectronics PLC.
*
* Author: Liam Girdwood <lrg@slimlogic.co.uk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Regulator Machine/Board Interface.
*/
#ifndef __LINUX_REGULATOR_MACHINE_H_
#define __LINUX_REGULATOR_MACHINE_H_
#include <linux/regulator/consumer.h>
#include <linux/suspend.h>
struct regulator;
/*
* Regulator operation constraint flags. These flags are used to enable
* certain regulator operations and can be OR'ed together.
*
* VOLTAGE: Regulator output voltage can be changed by software on this
* board/machine.
* CURRENT: Regulator output current can be changed by software on this
* board/machine.
* MODE: Regulator operating mode can be changed by software on this
* board/machine.
* STATUS: Regulator can be enabled and disabled.
* DRMS: Dynamic Regulator Mode Switching is enabled for this regulator.
*/
#define REGULATOR_CHANGE_VOLTAGE 0x1
#define REGULATOR_CHANGE_CURRENT 0x2
#define REGULATOR_CHANGE_MODE 0x4
#define REGULATOR_CHANGE_STATUS 0x8
#define REGULATOR_CHANGE_DRMS 0x10
/**
* struct regulator_state - regulator state during low power syatem states
*
* This describes a regulators state during a system wide low power state.
*
* @uV: Operating voltage during suspend.
* @mode: Operating mode during suspend.
* @enabled: Enabled during suspend.
*/
struct regulator_state {
int uV; /* suspend voltage */
unsigned int mode; /* suspend regulator operating mode */
int enabled; /* is regulator enabled in this suspend state */
};
/**
* struct regulation_constraints - regulator operating constraints.
*
* This struct describes regulator and board/machine specific constraints.
*
* @name: Descriptive name for the constraints, used for display purposes.
*
* @min_uV: Smallest voltage consumers may set.
* @max_uV: Largest voltage consumers may set.
*
* @min_uA: Smallest consumers consumers may set.
* @max_uA: Largest current consumers may set.
*
* @valid_modes_mask: Mask of modes which may be configured by consumers.
* @valid_ops_mask: Operations which may be performed by consumers.
*
* @always_on: Set if the regulator should never be disabled.
* @boot_on: Set if the regulator is enabled when the system is initially
* started.
* @apply_uV: Apply the voltage constraint when initialising.
*
* @input_uV: Input voltage for regulator when supplied by another regulator.
*
* @state_disk: State for regulator when system is suspended in disk mode.
* @state_mem: State for regulator when system is suspended in mem mode.
* @state_standby: State for regulator when system is suspended in standby
* mode.
* @initial_state: Suspend state to set by default.
*/
struct regulation_constraints {
char *name;
/* voltage output range (inclusive) - for voltage control */
int min_uV;
int max_uV;
/* current output range (inclusive) - for current control */
int min_uA;
int max_uA;
/* valid regulator operating modes for this machine */
unsigned int valid_modes_mask;
/* valid operations for regulator on this machine */
unsigned int valid_ops_mask;
/* regulator input voltage - only if supply is another regulator */
int input_uV;
/* regulator suspend states for global PMIC STANDBY/HIBERNATE */
struct regulator_state state_disk;
struct regulator_state state_mem;
struct regulator_state state_standby;
suspend_state_t initial_state; /* suspend state to set at init */
/* constriant flags */
unsigned always_on:1; /* regulator never off when system is on */
unsigned boot_on:1; /* bootloader/firmware enabled regulator */
unsigned apply_uV:1; /* apply uV constraint iff min == max */
};
/**
* struct regulator_consumer_supply - supply -> device mapping
*
* This maps a supply name to a device.
*
* @dev: Device structure for the consumer.
* @supply: Name for the supply.
*/
struct regulator_consumer_supply {
struct device *dev; /* consumer */
const char *supply; /* consumer supply - e.g. "vcc" */
};
/**
* struct regulator_init_data - regulator platform initialisation data.
*
* Initialisation constraints, our supply and consumers supplies.
*
* @supply_regulator_dev: Parent regulator (if any).
*
* @constraints: Constraints. These must be specified for the regulator to
* be usable.
* @num_consumer_supplies: Number of consumer device supplies.
* @consumer_supplies: Consumer device supply configuration.
*
* @regulator_init: Callback invoked when the regulator has been registered.
* @driver_data: Data passed to regulator_init.
*/
struct regulator_init_data {
struct device *supply_regulator_dev; /* or NULL for LINE */
struct regulation_constraints constraints;
int num_consumer_supplies;
struct regulator_consumer_supply *consumer_supplies;
/* optional regulator machine specific init */
int (*regulator_init)(void *driver_data);
void *driver_data; /* core does not touch this */
};
int regulator_suspend_prepare(suspend_state_t state);
#endif
|
