DL-Mirrors/kernel-tenderloin-3.0
0
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ledtrig-sleep: Add led trigger for sleep debugging.

Browse Source 
Signed-off-by: Brian Swetland <swetland@google.com>
This commit is contained in:
Arve Hjønnevåg
2008-03-30 21:47:13 -07:00
committed by Colin Cross
parent fa56540eb5
commit 04bbdfd360
3 changed files with 87 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/leds/Kconfig
View File

@@ -466,6 +466,12 @@ config LEDS_TRIGGER_DEFAULT_ON
This allows LEDs to be initialised in the ON state. This allows LEDs to be initialised in the ON state.
If unsure, say Y. 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.
comment "iptables trigger is under Netfilter config (LED target)" comment "iptables trigger is under Netfilter config (LED target)"
depends on LEDS_TRIGGERS depends on LEDS_TRIGGERS

1
drivers/leds/Makefile
View File

@@ -54,3 +54,4 @@ obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o
obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT) += ledtrig-backlight.o obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT) += ledtrig-backlight.o
obj-$(CONFIG_LEDS_TRIGGER_GPIO) += ledtrig-gpio.o obj-$(CONFIG_LEDS_TRIGGER_GPIO) += ledtrig-gpio.o
obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o
obj-$(CONFIG_LEDS_TRIGGER_SLEEP) += ledtrig-sleep.o

80
drivers/leds/ledtrig-sleep.c Normal file
View File

@@ -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);