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| author | Nick Forbes <Nick.Forbes@huntsworth.com> | 2008-04-25 01:06:52 +0200 |
|---|---|---|
| committer | Richard Purdie <rpurdie@rpsys.net> | 2008-04-25 01:06:52 +0200 |
| commit | 060856c799191ffc360105cac49f3f9e68d526b7 (patch) | |
| tree | 191f593264e0712b1be086c3e49faa9b2c782e9a /drivers/leds | |
| parent | leds: Document the context brightness_set needs (diff) | |
| download | linux-060856c799191ffc360105cac49f3f9e68d526b7.tar.xz linux-060856c799191ffc360105cac49f3f9e68d526b7.zip | |
leds: Add default-on trigger
Add a trigger which allows LEDs to default to the full
brightness state.
Signed-off-by: Nick Forbes <Nick.Forbes@huntsworth.com>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/leds/Makefile | 1 | ||||
| -rw-r--r-- | drivers/leds/ledtrig-default-on.c | 45 |
3 files changed, 53 insertions, 0 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 2d5ea8a05338..86a369bc57d6 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -183,4 +183,11 @@ config LEDS_TRIGGER_HEARTBEAT load average. If unsure, say Y. +config LEDS_TRIGGER_DEFAULT_ON + tristate "LED Default ON Trigger" + depends on LEDS_TRIGGERS + help + This allows LEDs to be initialised in the ON state. + If unsure, say Y. + endif # NEW_LEDS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 9adfa2fe37d4..973d626f5f4a 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -26,3 +26,4 @@ obj-$(CONFIG_LEDS_FSG) += leds-fsg.o obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK) += ledtrig-ide-disk.o obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o +obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o diff --git a/drivers/leds/ledtrig-default-on.c b/drivers/leds/ledtrig-default-on.c new file mode 100644 index 000000000000..92995e40cfa4 --- /dev/null +++ b/drivers/leds/ledtrig-default-on.c @@ -0,0 +1,45 @@ +/* + * LED Kernel Default ON Trigger + * + * Copyright 2008 Nick Forbes <nick.forbes@incepta.com> + * + * Based on Richard Purdie's ledtrig-timer.c. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/leds.h> +#include "leds.h" + +static void defon_trig_activate(struct led_classdev *led_cdev) +{ + led_set_brightness(led_cdev, LED_FULL); +} + +static struct led_trigger defon_led_trigger = { + .name = "default-on", + .activate = defon_trig_activate, +}; + +static int __init defon_trig_init(void) +{ + return led_trigger_register(&defon_led_trigger); +} + +static void __exit defon_trig_exit(void) +{ + led_trigger_unregister(&defon_led_trigger); +} + +module_init(defon_trig_init); +module_exit(defon_trig_exit); + +MODULE_AUTHOR("Nick Forbes <nick.forbes@incepta.com>"); +MODULE_DESCRIPTION("Default-ON LED trigger"); +MODULE_LICENSE("GPL"); |