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70 lines
2.4 KiB
Diff
70 lines
2.4 KiB
Diff
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From 4f76252afe98fd017894e61c296bc61836e67a4a Mon Sep 17 00:00:00 2001
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From: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@android.com>
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Date: Fri, 26 Sep 2008 22:10:56 -0700
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Subject: [PATCH 065/134] PM: Add early suspend api.
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---
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include/linux/earlysuspend.h | 56 ++++++++++++++++++++++++++++++++++++++++++
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1 files changed, 56 insertions(+), 0 deletions(-)
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create mode 100755 include/linux/earlysuspend.h
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--- /dev/null
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+++ b/include/linux/earlysuspend.h
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@@ -0,0 +1,56 @@
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+/* include/linux/earlysuspend.h
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+ *
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+ * Copyright (C) 2007-2008 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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+
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+#ifndef _LINUX_EARLYSUSPEND_H
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+#define _LINUX_EARLYSUSPEND_H
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+
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+#ifdef CONFIG_HAS_EARLYSUSPEND
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+#include <linux/list.h>
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+#endif
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+
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+/* The early_suspend structure defines suspend and resume hooks to be called
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+ * when the user visible sleep state of the system changes, and a level to
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+ * control the order. They can be used to turn off the screen and input
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+ * devices that are not used for wakeup.
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+ * Suspend handlers are called in low to high level order, resume handlers are
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+ * called in the opposite order. If, when calling register_early_suspend,
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+ * the suspend handlers have already been called without a matching call to the
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+ * resume handlers, the suspend handler will be called directly from
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+ * register_early_suspend. This direct call can violate the normal level order.
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+ */
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+enum {
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+ EARLY_SUSPEND_LEVEL_BLANK_SCREEN = 50,
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+ EARLY_SUSPEND_LEVEL_STOP_DRAWING = 100,
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+ EARLY_SUSPEND_LEVEL_DISABLE_FB = 150,
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+};
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+struct early_suspend {
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+#ifdef CONFIG_HAS_EARLYSUSPEND
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+ struct list_head link;
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+ int level;
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+ void (*suspend)(struct early_suspend *h);
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+ void (*resume)(struct early_suspend *h);
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+#endif
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+};
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+
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+#ifdef CONFIG_HAS_EARLYSUSPEND
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+void register_early_suspend(struct early_suspend *handler);
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+void unregister_early_suspend(struct early_suspend *handler);
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+#else
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+#define register_early_suspend(handler) do { } while (0)
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+#define unregister_early_suspend(handler) do { } while (0)
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+#endif
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+
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+#endif
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+
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