mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-09 21:41:53 +02:00
2d581e6047
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16459 3c298f89-4303-0410-b956-a3cf2f4a3e73
105 lines
3.4 KiB
Diff
105 lines
3.4 KiB
Diff
From e93bd714c424d9fe907cb1d8ec5ce784767a3b16 Mon Sep 17 00:00:00 2001
|
|
From: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@android.com>
|
|
Date: Fri, 26 Sep 2008 22:10:56 -0700
|
|
Subject: [PATCH 064/134] PM: Add wake lock api.
|
|
|
|
---
|
|
include/linux/wakelock.h | 91 ++++++++++++++++++++++++++++++++++++++++++++++
|
|
1 files changed, 91 insertions(+), 0 deletions(-)
|
|
create mode 100755 include/linux/wakelock.h
|
|
|
|
--- /dev/null
|
|
+++ b/include/linux/wakelock.h
|
|
@@ -0,0 +1,91 @@
|
|
+/* include/linux/wakelock.h
|
|
+ *
|
|
+ * Copyright (C) 2007-2008 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
|
|
+ * may be copied, distributed, and modified under those terms.
|
|
+ *
|
|
+ * This program is distributed in the hope that it will be useful,
|
|
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
+ * GNU General Public License for more details.
|
|
+ *
|
|
+ */
|
|
+
|
|
+#ifndef _LINUX_WAKELOCK_H
|
|
+#define _LINUX_WAKELOCK_H
|
|
+
|
|
+#include <linux/list.h>
|
|
+#include <linux/ktime.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.
|
|
+ */
|
|
+
|
|
+enum {
|
|
+ WAKE_LOCK_SUSPEND, /* Prevent suspend */
|
|
+ WAKE_LOCK_IDLE, /* Prevent low power idle */
|
|
+ WAKE_LOCK_TYPE_COUNT
|
|
+};
|
|
+
|
|
+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
|
|
+};
|
|
+
|
|
+#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) {}
|
|
+
|
|
+static inline int wake_lock_active(struct wake_lock *lock) { return 0; }
|
|
+static inline long has_wake_lock(int type) { return 0; }
|
|
+
|
|
+#endif
|
|
+
|
|
+#endif
|
|
+
|