[PATCH] LED: add LED trigger tupport

Add support for LED triggers to the LED subsystem.  "Triggers" are events
which change the state of an LED.  Two kinds of trigger are available, simple
ones which can be added to exising code with minimum disruption and complex
ones for implementing new or more complex functionality.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 106f9aeca04..a4d12ecaf6a 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -14,5 +14,13 @@ config LEDS_CLASS
           This option enables the led sysfs class in /sys/class/leds.  You'll
           need this to do anything useful with LEDs.  If unsure, say N.
 
+config LEDS_TRIGGERS
+        bool "LED Trigger support"
+        depends NEW_LEDS
+        help
+          This option enables trigger support for the leds class.
+          These triggers allow kernel events to drive the LEDs and can
+          be configured via sysfs. If unsure, say Y.
+
 endmenu