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67 lines
1.6 KiB
67 lines
1.6 KiB
/* 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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