percpu: use KERN_CONT in pcpu_dump_alloc_info()
[linux-2.6.git] / include / linux / pm_wakeup.h
blobd9f05113e5fb85204df5f45ee28d17e4596f31ee
1 /*
2 * pm_wakeup.h - Power management wakeup interface
4 * Copyright (C) 2008 Alan Stern
5 * Copyright (C) 2010 Rafael J. Wysocki, Novell Inc.
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.
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.
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
22 #ifndef _LINUX_PM_WAKEUP_H
23 #define _LINUX_PM_WAKEUP_H
25 #ifndef _DEVICE_H_
26 # error "please don't include this file directly"
27 #endif
29 #include <linux/types.h>
31 /**
32 * struct wakeup_source - Representation of wakeup sources
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.
43 struct wakeup_source {
44 const 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;
59 #ifdef CONFIG_PM_SLEEP
62 * Changes to device_may_wakeup take effect on the next pm state change.
65 static inline bool device_can_wakeup(struct device *dev)
67 return dev->power.can_wakeup;
70 static inline bool device_may_wakeup(struct device *dev)
72 return dev->power.can_wakeup && !!dev->power.wakeup;
75 /* drivers/base/power/wakeup.c */
76 extern void wakeup_source_prepare(struct wakeup_source *ws, const char *name);
77 extern struct wakeup_source *wakeup_source_create(const char *name);
78 extern void wakeup_source_drop(struct wakeup_source *ws);
79 extern void wakeup_source_destroy(struct wakeup_source *ws);
80 extern void wakeup_source_add(struct wakeup_source *ws);
81 extern void wakeup_source_remove(struct wakeup_source *ws);
82 extern struct wakeup_source *wakeup_source_register(const char *name);
83 extern void wakeup_source_unregister(struct wakeup_source *ws);
84 extern int device_wakeup_enable(struct device *dev);
85 extern int device_wakeup_disable(struct device *dev);
86 extern void device_set_wakeup_capable(struct device *dev, bool capable);
87 extern int device_init_wakeup(struct device *dev, bool val);
88 extern int device_set_wakeup_enable(struct device *dev, bool enable);
89 extern void __pm_stay_awake(struct wakeup_source *ws);
90 extern void pm_stay_awake(struct device *dev);
91 extern void __pm_relax(struct wakeup_source *ws);
92 extern void pm_relax(struct device *dev);
93 extern void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec);
94 extern void pm_wakeup_event(struct device *dev, unsigned int msec);
96 #else /* !CONFIG_PM_SLEEP */
98 static inline void device_set_wakeup_capable(struct device *dev, bool capable)
100 dev->power.can_wakeup = capable;
103 static inline bool device_can_wakeup(struct device *dev)
105 return dev->power.can_wakeup;
108 static inline void wakeup_source_prepare(struct wakeup_source *ws,
109 const char *name) {}
111 static inline struct wakeup_source *wakeup_source_create(const char *name)
113 return NULL;
116 static inline void wakeup_source_drop(struct wakeup_source *ws) {}
118 static inline void wakeup_source_destroy(struct wakeup_source *ws) {}
120 static inline void wakeup_source_add(struct wakeup_source *ws) {}
122 static inline void wakeup_source_remove(struct wakeup_source *ws) {}
124 static inline struct wakeup_source *wakeup_source_register(const char *name)
126 return NULL;
129 static inline void wakeup_source_unregister(struct wakeup_source *ws) {}
131 static inline int device_wakeup_enable(struct device *dev)
133 dev->power.should_wakeup = true;
134 return 0;
137 static inline int device_wakeup_disable(struct device *dev)
139 dev->power.should_wakeup = false;
140 return 0;
143 static inline int device_set_wakeup_enable(struct device *dev, bool enable)
145 dev->power.should_wakeup = enable;
146 return 0;
149 static inline int device_init_wakeup(struct device *dev, bool val)
151 device_set_wakeup_capable(dev, val);
152 device_set_wakeup_enable(dev, val);
153 return 0;
156 static inline bool device_may_wakeup(struct device *dev)
158 return dev->power.can_wakeup && dev->power.should_wakeup;
161 static inline void __pm_stay_awake(struct wakeup_source *ws) {}
163 static inline void pm_stay_awake(struct device *dev) {}
165 static inline void __pm_relax(struct wakeup_source *ws) {}
167 static inline void pm_relax(struct device *dev) {}
169 static inline void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec) {}
171 static inline void pm_wakeup_event(struct device *dev, unsigned int msec) {}
173 #endif /* !CONFIG_PM_SLEEP */
175 static inline void wakeup_source_init(struct wakeup_source *ws,
176 const char *name)
178 wakeup_source_prepare(ws, name);
179 wakeup_source_add(ws);
182 static inline void wakeup_source_trash(struct wakeup_source *ws)
184 wakeup_source_remove(ws);
185 wakeup_source_drop(ws);
188 #endif /* _LINUX_PM_WAKEUP_H */