aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorArve Hjønnevåg <arve@android.com>2008-09-26 22:10:56 -0700
committerColin Cross <ccross@android.com>2011-06-14 09:08:41 -0700
commit9e3725811792edff4c3ec0baa71df22ebb1a7d23 (patch)
treee6159bb211991aba5046cedee0f989f2d7d0f4bf
parentec81142a98488552276a425d6363533368d02025 (diff)
downloadkernel_samsung_aries-9e3725811792edff4c3ec0baa71df22ebb1a7d23.zip
kernel_samsung_aries-9e3725811792edff4c3ec0baa71df22ebb1a7d23.tar.gz
kernel_samsung_aries-9e3725811792edff4c3ec0baa71df22ebb1a7d23.tar.bz2
PM: Add early suspend api.
-rwxr-xr-xinclude/linux/earlysuspend.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/include/linux/earlysuspend.h b/include/linux/earlysuspend.h
new file mode 100755
index 0000000..8343b81
--- /dev/null
+++ b/include/linux/earlysuspend.h
@@ -0,0 +1,56 @@
+/* include/linux/earlysuspend.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_EARLYSUSPEND_H
+#define _LINUX_EARLYSUSPEND_H
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+#include <linux/list.h>
+#endif
+
+/* The early_suspend structure defines suspend and resume hooks to be called
+ * when the user visible sleep state of the system changes, and a level to
+ * control the order. They can be used to turn off the screen and input
+ * devices that are not used for wakeup.
+ * Suspend handlers are called in low to high level order, resume handlers are
+ * called in the opposite order. If, when calling register_early_suspend,
+ * the suspend handlers have already been called without a matching call to the
+ * resume handlers, the suspend handler will be called directly from
+ * register_early_suspend. This direct call can violate the normal level order.
+ */
+enum {
+ EARLY_SUSPEND_LEVEL_BLANK_SCREEN = 50,
+ EARLY_SUSPEND_LEVEL_STOP_DRAWING = 100,
+ EARLY_SUSPEND_LEVEL_DISABLE_FB = 150,
+};
+struct early_suspend {
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ struct list_head link;
+ int level;
+ void (*suspend)(struct early_suspend *h);
+ void (*resume)(struct early_suspend *h);
+#endif
+};
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+void register_early_suspend(struct early_suspend *handler);
+void unregister_early_suspend(struct early_suspend *handler);
+#else
+#define register_early_suspend(handler) do { } while (0)
+#define unregister_early_suspend(handler) do { } while (0)
+#endif
+
+#endif
+