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
164
165
166
167
168
169
170
171
172
173
174
|
/*
* pm_wakeup.h - Power management wakeup interface
*
* Copyright (C) 2008 Alan Stern
* Copyright (C) 2010 Rafael J. Wysocki, Novell Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _LINUX_PM_WAKEUP_H
#define _LINUX_PM_WAKEUP_H
#ifndef _DEVICE_H_
# error "please don't include this file directly"
#endif
#include <linux/types.h>
/**
* struct wakeup_source - Representation of wakeup sources
*
* @total_time: Total time this wakeup source has been active.
* @max_time: Maximum time this wakeup source has been continuously active.
* @last_time: Monotonic clock when the wakeup source's was activated last time.
* @event_count: Number of signaled wakeup events.
* @active_count: Number of times the wakeup sorce was activated.
* @relax_count: Number of times the wakeup sorce was deactivated.
* @hit_count: Number of times the wakeup sorce might abort system suspend.
* @active: Status of the wakeup source.
*/
struct wakeup_source {
char *name;
struct list_head entry;
spinlock_t lock;
struct timer_list timer;
unsigned long timer_expires;
ktime_t total_time;
ktime_t max_time;
ktime_t last_time;
unsigned long event_count;
unsigned long active_count;
unsigned long relax_count;
unsigned long hit_count;
unsigned int active:1;
};
#ifdef CONFIG_PM_SLEEP
/*
* Changes to device_may_wakeup take effect on the next pm state change.
*/
static inline void device_set_wakeup_capable(struct device *dev, bool capable)
{
dev->power.can_wakeup = capable;
}
static inline bool device_can_wakeup(struct device *dev)
{
return dev->power.can_wakeup;
}
static inline bool device_may_wakeup(struct device *dev)
{
return dev->power.can_wakeup && !!dev->power.wakeup;
}
/* drivers/base/power/wakeup.c */
extern struct wakeup_source *wakeup_source_create(const char *name);
extern void wakeup_source_destroy(struct wakeup_source *ws);
extern void wakeup_source_add(struct wakeup_source *ws);
extern void wakeup_source_remove(struct wakeup_source *ws);
extern struct wakeup_source *wakeup_source_register(const char *name);
extern void wakeup_source_unregister(struct wakeup_source *ws);
extern int device_wakeup_enable(struct device *dev);
extern int device_wakeup_disable(struct device *dev);
extern int device_init_wakeup(struct device *dev, bool val);
extern int device_set_wakeup_enable(struct device *dev, bool enable);
extern void __pm_stay_awake(struct wakeup_source *ws);
extern void pm_stay_awake(struct device *dev);
extern void __pm_relax(struct wakeup_source *ws);
extern void pm_relax(struct device *dev);
extern void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec);
extern void pm_wakeup_event(struct device *dev, unsigned int msec);
#else /* !CONFIG_PM_SLEEP */
static inline void device_set_wakeup_capable(struct device *dev, bool capable)
{
dev->power.can_wakeup = capable;
}
static inline bool device_can_wakeup(struct device *dev)
{
return dev->power.can_wakeup;
}
static inline struct wakeup_source *wakeup_source_create(const char *name)
{
return NULL;
}
static inline void wakeup_source_destroy(struct wakeup_source *ws) {}
static inline void wakeup_source_add(struct wakeup_source *ws) {}
static inline void wakeup_source_remove(struct wakeup_source *ws) {}
static inline struct wakeup_source *wakeup_source_register(const char *name)
{
return NULL;
}
static inline void wakeup_source_unregister(struct wakeup_source *ws) {}
static inline int device_wakeup_enable(struct device *dev)
{
dev->power.should_wakeup = true;
return 0;
}
static inline int device_wakeup_disable(struct device *dev)
{
dev->power.should_wakeup = false;
return 0;
}
static inline int device_set_wakeup_enable(struct device *dev, bool enable)
{
dev->power.should_wakeup = enable;
return 0;
}
static inline int device_init_wakeup(struct device *dev, bool val)
{
device_set_wakeup_capable(dev, val);
device_set_wakeup_enable(dev, val);
return 0;
}
static inline bool device_may_wakeup(struct device *dev)
{
return dev->power.can_wakeup && dev->power.should_wakeup;
}
static inline void __pm_stay_awake(struct wakeup_source *ws) {}
static inline void pm_stay_awake(struct device *dev) {}
static inline void __pm_relax(struct wakeup_source *ws) {}
static inline void pm_relax(struct device *dev) {}
static inline void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec) {}
static inline void pm_wakeup_event(struct device *dev, unsigned int msec) {}
#endif /* !CONFIG_PM_SLEEP */
#endif /* _LINUX_PM_WAKEUP_H */
|
