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 a4a1ae2..2d555a3 100644--- a/drivers/leds/Kconfig+++ b/drivers/leds/Kconfig@@ -230,4 +230,10 @@ 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 bc247cb..e259998 100644--- a/drivers/leds/Makefile+++ b/drivers/leds/Makefile@@ -32,3 +32,4 @@ 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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