diff options
Diffstat (limited to 'target/linux/goldfish/patches-2.6.30/0067-PM-Implement-early-suspend-api.patch')
| -rw-r--r-- | target/linux/goldfish/patches-2.6.30/0067-PM-Implement-early-suspend-api.patch | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/target/linux/goldfish/patches-2.6.30/0067-PM-Implement-early-suspend-api.patch b/target/linux/goldfish/patches-2.6.30/0067-PM-Implement-early-suspend-api.patch deleted file mode 100644 index 0fc0cc1bbf..0000000000 --- a/target/linux/goldfish/patches-2.6.30/0067-PM-Implement-early-suspend-api.patch +++ /dev/null @@ -1,244 +0,0 @@ -From 2d4a25785ad1aa51bad967543e1ab20e9ed4a046 Mon Sep 17 00:00:00 2001 -From: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@android.com> -Date: Tue, 7 Oct 2008 20:48:01 -0700 -Subject: [PATCH 067/134] PM: Implement early suspend api - ---- - kernel/power/Kconfig | 12 +++ - kernel/power/Makefile | 1 + - kernel/power/earlysuspend.c | 178 +++++++++++++++++++++++++++++++++++++++++++ - kernel/power/power.h | 6 ++ - 4 files changed, 197 insertions(+), 0 deletions(-) - create mode 100644 kernel/power/earlysuspend.c - ---- a/kernel/power/Kconfig -+++ b/kernel/power/Kconfig -@@ -119,6 +119,9 @@ config SUSPEND_FREEZER - config HAS_WAKELOCK - bool - -+config HAS_EARLYSUSPEND -+ bool -+ - config WAKELOCK - bool "Wake lock" - depends on PM && RTC_CLASS -@@ -135,6 +138,15 @@ config WAKELOCK_STAT - ---help--- - Report wake lock stats in /proc/wakelocks - -+config EARLYSUSPEND -+ bool "Early suspend" -+ depends on WAKELOCK -+ default y -+ select HAS_EARLYSUSPEND -+ ---help--- -+ Call early suspend handlers when the user requested sleep state -+ changes. -+ - config HIBERNATION - bool "Hibernation (aka 'suspend to disk')" - depends on PM && SWAP && ARCH_HIBERNATION_POSSIBLE ---- a/kernel/power/Makefile -+++ b/kernel/power/Makefile -@@ -7,6 +7,7 @@ obj-$(CONFIG_PM) += main.o - obj-$(CONFIG_PM_SLEEP) += console.o - obj-$(CONFIG_FREEZER) += process.o - obj-$(CONFIG_WAKELOCK) += wakelock.o -+obj-$(CONFIG_EARLYSUSPEND) += earlysuspend.o - obj-$(CONFIG_HIBERNATION) += swsusp.o disk.o snapshot.o swap.o user.o - - obj-$(CONFIG_MAGIC_SYSRQ) += poweroff.o ---- /dev/null -+++ b/kernel/power/earlysuspend.c -@@ -0,0 +1,178 @@ -+/* kernel/power/earlysuspend.c -+ * -+ * Copyright (C) 2005-2008 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. -+ * -+ */ -+ -+#include <linux/earlysuspend.h> -+#include <linux/module.h> -+#include <linux/mutex.h> -+#include <linux/rtc.h> -+#include <linux/syscalls.h> /* sys_sync */ -+#include <linux/wakelock.h> -+#include <linux/workqueue.h> -+ -+#include "power.h" -+ -+enum { -+ DEBUG_USER_STATE = 1U << 0, -+ DEBUG_SUSPEND = 1U << 2, -+}; -+static int debug_mask = DEBUG_USER_STATE; -+module_param_named(debug_mask, debug_mask, int, S_IRUGO | S_IWUSR | S_IWGRP); -+ -+static DEFINE_MUTEX(early_suspend_lock); -+static LIST_HEAD(early_suspend_handlers); -+static void early_suspend(struct work_struct *work); -+static void late_resume(struct work_struct *work); -+static DECLARE_WORK(early_suspend_work, early_suspend); -+static DECLARE_WORK(late_resume_work, late_resume); -+static DEFINE_SPINLOCK(state_lock); -+enum { -+ SUSPEND_REQUESTED = 0x1, -+ SUSPENDED = 0x2, -+ SUSPEND_REQUESTED_AND_SUSPENDED = SUSPEND_REQUESTED | SUSPENDED, -+}; -+static int state; -+ -+void register_early_suspend(struct early_suspend *handler) -+{ -+ struct list_head *pos; -+ -+ mutex_lock(&early_suspend_lock); -+ list_for_each(pos, &early_suspend_handlers) { -+ struct early_suspend *e; -+ e = list_entry(pos, struct early_suspend, link); -+ if (e->level > handler->level) -+ break; -+ } -+ list_add_tail(&handler->link, pos); -+ if ((state & SUSPENDED) && handler->suspend) -+ handler->suspend(handler); -+ mutex_unlock(&early_suspend_lock); -+} -+EXPORT_SYMBOL(register_early_suspend); -+ -+void unregister_early_suspend(struct early_suspend *handler) -+{ -+ mutex_lock(&early_suspend_lock); -+ list_del(&handler->link); -+ mutex_unlock(&early_suspend_lock); -+} -+EXPORT_SYMBOL(unregister_early_suspend); -+ -+static void early_suspend(struct work_struct *work) -+{ -+ struct early_suspend *pos; -+ unsigned long irqflags; -+ int abort = 0; -+ -+ mutex_lock(&early_suspend_lock); -+ spin_lock_irqsave(&state_lock, irqflags); -+ if (state == SUSPEND_REQUESTED) -+ state |= SUSPENDED; -+ else -+ abort = 1; -+ spin_unlock_irqrestore(&state_lock, irqflags); -+ -+ if (abort) { -+ if (debug_mask & DEBUG_SUSPEND) -+ pr_info("early_suspend: abort, state %d\n", state); -+ mutex_unlock(&early_suspend_lock); -+ goto abort; -+ } -+ -+ if (debug_mask & DEBUG_SUSPEND) -+ pr_info("early_suspend: call handlers\n"); -+ list_for_each_entry(pos, &early_suspend_handlers, link) { -+ if (pos->suspend != NULL) -+ pos->suspend(pos); -+ } -+ mutex_unlock(&early_suspend_lock); -+ -+ if (debug_mask & DEBUG_SUSPEND) -+ pr_info("early_suspend: sync\n"); -+ -+ sys_sync(); -+abort: -+ spin_lock_irqsave(&state_lock, irqflags); -+ if (state == SUSPEND_REQUESTED_AND_SUSPENDED) -+ wake_unlock(&main_wake_lock); -+ spin_unlock_irqrestore(&state_lock, irqflags); -+} -+ -+static void late_resume(struct work_struct *work) -+{ -+ struct early_suspend *pos; -+ unsigned long irqflags; -+ int abort = 0; -+ -+ mutex_lock(&early_suspend_lock); -+ spin_lock_irqsave(&state_lock, irqflags); -+ if (state == SUSPENDED) -+ state &= ~SUSPENDED; -+ else -+ abort = 1; -+ spin_unlock_irqrestore(&state_lock, irqflags); -+ -+ if (abort) { -+ if (debug_mask & DEBUG_SUSPEND) -+ pr_info("late_resume: abort, state %d\n", state); -+ goto abort; -+ } -+ if (debug_mask & DEBUG_SUSPEND) -+ pr_info("late_resume: call handlers\n"); -+ list_for_each_entry_reverse(pos, &early_suspend_handlers, link) -+ if (pos->resume != NULL) -+ pos->resume(pos); -+ if (debug_mask & DEBUG_SUSPEND) -+ pr_info("late_resume: done\n"); -+abort: -+ mutex_unlock(&early_suspend_lock); -+} -+ -+void request_suspend_state(suspend_state_t new_state) -+{ -+ unsigned long irqflags; -+ int old_sleep; -+ -+ spin_lock_irqsave(&state_lock, irqflags); -+ old_sleep = state & SUSPEND_REQUESTED; -+ if (debug_mask & DEBUG_USER_STATE) { -+ struct timespec ts; -+ struct rtc_time tm; -+ getnstimeofday(&ts); -+ rtc_time_to_tm(ts.tv_sec, &tm); -+ pr_info("request_suspend_state: %s (%d->%d) at %lld " -+ "(%d-%02d-%02d %02d:%02d:%02d.%09lu UTC)\n", -+ new_state != PM_SUSPEND_ON ? "sleep" : "wakeup", -+ requested_suspend_state, new_state, -+ ktime_to_ns(ktime_get()), -+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, -+ tm.tm_hour, tm.tm_min, tm.tm_sec, ts.tv_nsec); -+ } -+ if (!old_sleep && new_state != PM_SUSPEND_ON) { -+ state |= SUSPEND_REQUESTED; -+ queue_work(suspend_work_queue, &early_suspend_work); -+ } else if (old_sleep && new_state == PM_SUSPEND_ON) { -+ state &= ~SUSPEND_REQUESTED; -+ wake_lock(&main_wake_lock); -+ queue_work(suspend_work_queue, &late_resume_work); -+ } -+ requested_suspend_state = new_state; -+ spin_unlock_irqrestore(&state_lock, irqflags); -+} -+ -+suspend_state_t get_suspend_state(void) -+{ -+ return requested_suspend_state; -+} ---- a/kernel/power/power.h -+++ b/kernel/power/power.h -@@ -230,3 +230,9 @@ extern struct workqueue_struct *suspend_ - extern struct wake_lock main_wake_lock; - extern suspend_state_t requested_suspend_state; - #endif -+ -+#ifdef CONFIG_EARLYSUSPEND -+/* kernel/power/earlysuspend.c */ -+void request_suspend_state(suspend_state_t state); -+suspend_state_t get_suspend_state(void); -+#endif |