leds: add camera LED triggers
Some LED devices support flash/torch functionality through the LED subsystem.
This patch enables direct LED trigger controls by the driver.
Flash on/off and torch on/off can be done simply by other driver space.
Two trigger APIs are added, ledtrig_flash_ctrl() and ledtrig_torch_ctrl().
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
diff --git a/drivers/leds/trigger/Kconfig b/drivers/leds/trigger/Kconfig
index eaa286d..49794b4 100644
--- a/drivers/leds/trigger/Kconfig
+++ b/drivers/leds/trigger/Kconfig
@@ -100,4 +100,12 @@
GPIO/PWM based hardware.
If unsure, say Y.
+config LEDS_TRIGGER_CAMERA
+ tristate "LED Camera Flash/Torch Trigger"
+ depends on LEDS_TRIGGERS
+ help
+ This allows LEDs to be controlled as a camera flash/torch device.
+ This enables direct flash/torch on/off by the driver, kernel space.
+ If unsure, say Y.
+
endif # LEDS_TRIGGERS