Commit | Line | Data |
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9a3df1f7 AS |
1 | /* |
2 | * pm_wakeup.h - Power management wakeup interface | |
3 | * | |
4 | * Copyright (C) 2008 Alan Stern | |
074037ec | 5 | * Copyright (C) 2010 Rafael J. Wysocki, Novell Inc. |
9a3df1f7 AS |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
22 | #ifndef _LINUX_PM_WAKEUP_H | |
23 | #define _LINUX_PM_WAKEUP_H | |
24 | ||
25 | #ifndef _DEVICE_H_ | |
26 | # error "please don't include this file directly" | |
27 | #endif | |
28 | ||
228c54ef DT |
29 | #include <linux/types.h> |
30 | ||
074037ec RW |
31 | /** |
32 | * struct wakeup_source - Representation of wakeup sources | |
2430d12c | 33 | * |
074037ec RW |
34 | * @total_time: Total time this wakeup source has been active. |
35 | * @max_time: Maximum time this wakeup source has been continuously active. | |
36 | * @last_time: Monotonic clock when the wakeup source's was activated last time. | |
37 | * @event_count: Number of signaled wakeup events. | |
38 | * @active_count: Number of times the wakeup sorce was activated. | |
39 | * @relax_count: Number of times the wakeup sorce was deactivated. | |
40 | * @hit_count: Number of times the wakeup sorce might abort system suspend. | |
41 | * @active: Status of the wakeup source. | |
9a3df1f7 | 42 | */ |
074037ec RW |
43 | struct wakeup_source { |
44 | char *name; | |
45 | struct list_head entry; | |
46 | spinlock_t lock; | |
47 | struct timer_list timer; | |
48 | unsigned long timer_expires; | |
49 | ktime_t total_time; | |
50 | ktime_t max_time; | |
51 | ktime_t last_time; | |
52 | unsigned long event_count; | |
53 | unsigned long active_count; | |
54 | unsigned long relax_count; | |
55 | unsigned long hit_count; | |
56 | unsigned int active:1; | |
57 | }; | |
58 | ||
59 | #ifdef CONFIG_PM_SLEEP | |
60 | ||
61 | /* | |
62 | * Changes to device_may_wakeup take effect on the next pm state change. | |
63 | */ | |
64 | ||
074037ec RW |
65 | static inline bool device_can_wakeup(struct device *dev) |
66 | { | |
67 | return dev->power.can_wakeup; | |
68 | } | |
69 | ||
074037ec | 70 | static inline bool device_may_wakeup(struct device *dev) |
9a3df1f7 | 71 | { |
074037ec | 72 | return dev->power.can_wakeup && !!dev->power.wakeup; |
9a3df1f7 AS |
73 | } |
74 | ||
074037ec RW |
75 | /* drivers/base/power/wakeup.c */ |
76 | extern struct wakeup_source *wakeup_source_create(const char *name); | |
77 | extern void wakeup_source_destroy(struct wakeup_source *ws); | |
78 | extern void wakeup_source_add(struct wakeup_source *ws); | |
79 | extern void wakeup_source_remove(struct wakeup_source *ws); | |
80 | extern struct wakeup_source *wakeup_source_register(const char *name); | |
81 | extern void wakeup_source_unregister(struct wakeup_source *ws); | |
82 | extern int device_wakeup_enable(struct device *dev); | |
83 | extern int device_wakeup_disable(struct device *dev); | |
cb8f51bd | 84 | extern void device_set_wakeup_capable(struct device *dev, bool capable); |
074037ec RW |
85 | extern int device_init_wakeup(struct device *dev, bool val); |
86 | extern int device_set_wakeup_enable(struct device *dev, bool enable); | |
87 | extern void __pm_stay_awake(struct wakeup_source *ws); | |
88 | extern void pm_stay_awake(struct device *dev); | |
89 | extern void __pm_relax(struct wakeup_source *ws); | |
90 | extern void pm_relax(struct device *dev); | |
91 | extern void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec); | |
92 | extern void pm_wakeup_event(struct device *dev, unsigned int msec); | |
93 | ||
94 | #else /* !CONFIG_PM_SLEEP */ | |
95 | ||
228c54ef | 96 | static inline void device_set_wakeup_capable(struct device *dev, bool capable) |
eb9d0fe4 | 97 | { |
228c54ef | 98 | dev->power.can_wakeup = capable; |
eb9d0fe4 RW |
99 | } |
100 | ||
228c54ef | 101 | static inline bool device_can_wakeup(struct device *dev) |
9a3df1f7 AS |
102 | { |
103 | return dev->power.can_wakeup; | |
104 | } | |
105 | ||
074037ec | 106 | static inline struct wakeup_source *wakeup_source_create(const char *name) |
9a3df1f7 | 107 | { |
074037ec | 108 | return NULL; |
9a3df1f7 AS |
109 | } |
110 | ||
074037ec RW |
111 | static inline void wakeup_source_destroy(struct wakeup_source *ws) {} |
112 | ||
113 | static inline void wakeup_source_add(struct wakeup_source *ws) {} | |
9a3df1f7 | 114 | |
074037ec RW |
115 | static inline void wakeup_source_remove(struct wakeup_source *ws) {} |
116 | ||
117 | static inline struct wakeup_source *wakeup_source_register(const char *name) | |
9a3df1f7 | 118 | { |
074037ec | 119 | return NULL; |
9a3df1f7 AS |
120 | } |
121 | ||
074037ec RW |
122 | static inline void wakeup_source_unregister(struct wakeup_source *ws) {} |
123 | ||
124 | static inline int device_wakeup_enable(struct device *dev) | |
228c54ef | 125 | { |
805bdaec RW |
126 | dev->power.should_wakeup = true; |
127 | return 0; | |
228c54ef | 128 | } |
c300bd2f | 129 | |
074037ec | 130 | static inline int device_wakeup_disable(struct device *dev) |
9a3df1f7 | 131 | { |
805bdaec | 132 | dev->power.should_wakeup = false; |
074037ec | 133 | return 0; |
9a3df1f7 AS |
134 | } |
135 | ||
805bdaec | 136 | static inline int device_set_wakeup_enable(struct device *dev, bool enable) |
228c54ef | 137 | { |
805bdaec RW |
138 | dev->power.should_wakeup = enable; |
139 | return 0; | |
228c54ef DT |
140 | } |
141 | ||
805bdaec RW |
142 | static inline int device_init_wakeup(struct device *dev, bool val) |
143 | { | |
144 | device_set_wakeup_capable(dev, val); | |
145 | device_set_wakeup_enable(dev, val); | |
146 | return 0; | |
147 | } | |
074037ec | 148 | |
805bdaec | 149 | static inline bool device_may_wakeup(struct device *dev) |
228c54ef | 150 | { |
805bdaec | 151 | return dev->power.can_wakeup && dev->power.should_wakeup; |
228c54ef | 152 | } |
9a3df1f7 | 153 | |
074037ec RW |
154 | static inline void __pm_stay_awake(struct wakeup_source *ws) {} |
155 | ||
156 | static inline void pm_stay_awake(struct device *dev) {} | |
157 | ||
158 | static inline void __pm_relax(struct wakeup_source *ws) {} | |
159 | ||
160 | static inline void pm_relax(struct device *dev) {} | |
161 | ||
162 | static inline void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec) {} | |
163 | ||
164 | static inline void pm_wakeup_event(struct device *dev, unsigned int msec) {} | |
165 | ||
166 | #endif /* !CONFIG_PM_SLEEP */ | |
9a3df1f7 AS |
167 | |
168 | #endif /* _LINUX_PM_WAKEUP_H */ |