PM / Sleep: Add wake lock api wrapper on top of wakeup sources
Change-Id: Icaad02fe1e8856fdc2e4215f380594a5dde8e002
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Git-commit: e9911f4efdc55af703b8b3bb8c839e6f5dd173bb
Git-repo: git://codeaurora.org/kernel/msm.git
[anursing@codeaurora.org: replace existing implementation, resolve
merge conflicts]
Signed-off-by: Anurag Singh <anursing@codeaurora.org>
diff --git a/include/linux/wakelock.h b/include/linux/wakelock.h
index 5b2d0f3..f4a698a 100644
--- a/include/linux/wakelock.h
+++ b/include/linux/wakelock.h
@@ -1,6 +1,6 @@
/* include/linux/wakelock.h
*
- * Copyright (C) 2007-2008 Google, Inc.
+ * Copyright (C) 2007-2012 Google, Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
@@ -16,14 +16,12 @@
#ifndef _LINUX_WAKELOCK_H
#define _LINUX_WAKELOCK_H
-#include <linux/list.h>
#include <linux/ktime.h>
+#include <linux/device.h>
/* A wake_lock prevents the system from entering suspend or other low power
* states when active. If the type is set to WAKE_LOCK_SUSPEND, the wake_lock
- * prevents a full system suspend. If the type is WAKE_LOCK_IDLE, low power
- * states that cause large interrupt latencies or that disable a set of
- * interrupts will not entered from idle until the wake_locks are released.
+ * prevents a full system suspend.
*/
enum {
@@ -32,59 +30,38 @@
};
struct wake_lock {
-#ifdef CONFIG_HAS_WAKELOCK
- struct list_head link;
- int flags;
- const char *name;
- unsigned long expires;
-#ifdef CONFIG_WAKELOCK_STAT
- struct {
- int count;
- int expire_count;
- int wakeup_count;
- ktime_t total_time;
- ktime_t prevent_suspend_time;
- ktime_t max_time;
- ktime_t last_time;
- } stat;
-#endif
-#endif
+ struct wakeup_source ws;
};
-#ifdef CONFIG_HAS_WAKELOCK
-
-void wake_lock_init(struct wake_lock *lock, int type, const char *name);
-void wake_lock_destroy(struct wake_lock *lock);
-void wake_lock(struct wake_lock *lock);
-void wake_lock_timeout(struct wake_lock *lock, long timeout);
-void wake_unlock(struct wake_lock *lock);
-
-/* wake_lock_active returns a non-zero value if the wake_lock is currently
- * locked. If the wake_lock has a timeout, it does not check the timeout
- * but if the timeout had aready been checked it will return 0.
- */
-int wake_lock_active(struct wake_lock *lock);
-
-/* has_wake_lock returns 0 if no wake locks of the specified type are active,
- * and non-zero if one or more wake locks are held. Specifically it returns
- * -1 if one or more wake locks with no timeout are active or the
- * number of jiffies until all active wake locks time out.
- */
-long has_wake_lock(int type);
-
-#else
-
static inline void wake_lock_init(struct wake_lock *lock, int type,
- const char *name) {}
-static inline void wake_lock_destroy(struct wake_lock *lock) {}
-static inline void wake_lock(struct wake_lock *lock) {}
-static inline void wake_lock_timeout(struct wake_lock *lock, long timeout) {}
-static inline void wake_unlock(struct wake_lock *lock) {}
+ const char *name)
+{
+ wakeup_source_init(&lock->ws, name);
+}
-static inline int wake_lock_active(struct wake_lock *lock) { return 0; }
-static inline long has_wake_lock(int type) { return 0; }
+static inline void wake_lock_destroy(struct wake_lock *lock)
+{
+ wakeup_source_trash(&lock->ws);
+}
+
+static inline void wake_lock(struct wake_lock *lock)
+{
+ __pm_stay_awake(&lock->ws);
+}
+
+static inline void wake_lock_timeout(struct wake_lock *lock, long timeout)
+{
+ __pm_wakeup_event(&lock->ws, jiffies_to_msecs(timeout));
+}
+
+static inline void wake_unlock(struct wake_lock *lock)
+{
+ __pm_relax(&lock->ws);
+}
+
+static inline int wake_lock_active(struct wake_lock *lock)
+{
+ return lock->ws.active;
+}
#endif
-
-#endif
-