68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
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/* include/linux/wakelock.h
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*
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* Copyright (C) 2007-2012 Google, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _LINUX_WAKELOCK_H
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#define _LINUX_WAKELOCK_H
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#include <linux/ktime.h>
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#include <linux/device.h>
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/* A wake_lock prevents the system from entering suspend or other low power
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* states when active. If the type is set to WAKE_LOCK_SUSPEND, the wake_lock
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* prevents a full system suspend.
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*/
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enum {
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WAKE_LOCK_SUSPEND, /* Prevent suspend */
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WAKE_LOCK_TYPE_COUNT
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};
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struct wake_lock {
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struct wakeup_source ws;
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};
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static inline void wake_lock_init(struct wake_lock *lock, int type,
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const char *name)
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{
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wakeup_source_init(&lock->ws, name);
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}
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static inline void wake_lock_destroy(struct wake_lock *lock)
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{
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wakeup_source_trash(&lock->ws);
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}
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static inline void wake_lock(struct wake_lock *lock)
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{
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__pm_stay_awake(&lock->ws);
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}
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static inline void wake_lock_timeout(struct wake_lock *lock, long timeout)
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{
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__pm_wakeup_event(&lock->ws, jiffies_to_msecs(timeout));
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}
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static inline void wake_unlock(struct wake_lock *lock)
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{
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__pm_relax(&lock->ws);
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}
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static inline int wake_lock_active(struct wake_lock *lock)
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{
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return lock->ws.active;
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}
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#endif
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