[PATCH 13/13] ledtrig-sleep: Add led trigger for sleep debugging.

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Signed-off-by: Brian Swetland <swetland@xxxxxxxxxx>Signed-off-by: Arve Hjønnevåg <arve@xxxxxxxxxxx>--- drivers/leds/Kconfig         |    6 +++ drivers/leds/Makefile        |    1 + drivers/leds/ledtrig-sleep.c |   80 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 87 insertions(+), 0 deletions(-) create mode 100644 drivers/leds/ledtrig-sleep.c
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfigindex 7427136..0af1786 100644--- a/drivers/leds/Kconfig+++ b/drivers/leds/Kconfig@@ -223,4 +223,10 @@ config LEDS_TRIGGER_DEFAULT_ON 	  This allows LEDs to be initialised in the ON state. 	  If unsure, say Y. +config LEDS_TRIGGER_SLEEP+	tristate "LED Sleep Mode Trigger"+	depends on LEDS_TRIGGERS && HAS_EARLYSUSPEND+	help+	  This turns LEDs on when the screen is off but the cpu still running.+ endif # NEW_LEDSdiff --git a/drivers/leds/Makefile b/drivers/leds/Makefileindex 9d76f0f..9cfc148 100644--- a/drivers/leds/Makefile+++ b/drivers/leds/Makefile@@ -31,3 +31,4 @@ obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK)	+= ledtrig-ide-disk.o obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT)	+= ledtrig-heartbeat.o obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT)	+= ledtrig-backlight.o obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON)	+= ledtrig-default-on.o+obj-$(CONFIG_LEDS_TRIGGER_SLEEP)	+= ledtrig-sleep.odiff --git a/drivers/leds/ledtrig-sleep.c b/drivers/leds/ledtrig-sleep.cnew file mode 100644index 0000000..f164042--- /dev/null+++ b/drivers/leds/ledtrig-sleep.c@@ -0,0 +1,80 @@+/* drivers/leds/ledtrig-sleep.c+ *+ * Copyright (C) 2007 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/leds.h>+#include <linux/suspend.h>++static int ledtrig_sleep_pm_callback(struct notifier_block *nfb,+					unsigned long action,+					void *ignored);++DEFINE_LED_TRIGGER(ledtrig_sleep)+static struct notifier_block ledtrig_sleep_pm_notifier = {+	.notifier_call = ledtrig_sleep_pm_callback,+	.priority = 0,+};++static void ledtrig_sleep_early_suspend(struct early_suspend *h)+{+	led_trigger_event(ledtrig_sleep, LED_FULL);+}++static void ledtrig_sleep_early_resume(struct early_suspend *h)+{+	led_trigger_event(ledtrig_sleep, LED_OFF);+}++static struct early_suspend ledtrig_sleep_early_suspend_handler = {+	.suspend = ledtrig_sleep_early_suspend,+	.resume = ledtrig_sleep_early_resume,+};++static int ledtrig_sleep_pm_callback(struct notifier_block *nfb,+					unsigned long action,+					void *ignored)+{+	switch (action) {+	case PM_HIBERNATION_PREPARE:+	case PM_SUSPEND_PREPARE:+		led_trigger_event(ledtrig_sleep, LED_OFF);+		return NOTIFY_OK;+	case PM_POST_HIBERNATION:+	case PM_POST_SUSPEND:+		led_trigger_event(ledtrig_sleep, LED_FULL);+		return NOTIFY_OK;+	}++	return NOTIFY_DONE;+}++static int __init ledtrig_sleep_init(void)+{+	led_trigger_register_simple("sleep", &ledtrig_sleep);+	register_pm_notifier(&ledtrig_sleep_pm_notifier);+	register_early_suspend(&ledtrig_sleep_early_suspend_handler);+	return 0;+}++static void __exit ledtrig_sleep_exit(void)+{+	unregister_early_suspend(&ledtrig_sleep_early_suspend_handler);+	unregister_pm_notifier(&ledtrig_sleep_pm_notifier);+	led_trigger_unregister_simple(ledtrig_sleep);+}++module_init(ledtrig_sleep_init);+module_exit(ledtrig_sleep_exit);+-- 1.6.1
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