[PATCH] LED: add LED timer trigger

Add an example of a complex LED trigger in the form of a generic timer which
triggers the LED its attached to at a user specified frequency and duty cycle.

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, 7 insertions, 0 deletions

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index a4d12ecaf6a5..fda44df5921f 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -22,5 +22,12 @@ config LEDS_TRIGGERS
           These triggers allow kernel events to drive the LEDs and can
           be configured via sysfs. If unsure, say Y.
 
+config LEDS_TRIGGER_TIMER
+        tristate "LED Timer Trigger"
+        depends LEDS_TRIGGERS
+        help
+          This allows LEDs to be controlled by a programmable timer
+          via sysfs. If unsure, say Y.
+
 endmenu