leds: allow led-drivers to use a variable range of brightness values

This patch allows drivers to override the default maximum brightness value
of 255.  We take care to preserve backwards-compatibility as much as
possible, so that user-space ABI doesn't change for existing drivers.
LED trigger code has also been updated to use the per-LED maximum.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/leds/ledtrig-timer.c b/drivers/leds/ledtrig-timer.c
index 3d6531396dda..3b83406de752 100644
--- a/drivers/leds/ledtrig-timer.c
+++ b/drivers/leds/ledtrig-timer.c
@@ -166,7 +166,7 @@ static void timer_trig_activate(struct led_classdev *led_cdev)
 
         timer_data->brightness_on = led_get_brightness(led_cdev);
         if (timer_data->brightness_on == LED_OFF)
-                timer_data->brightness_on = LED_FULL;
+                timer_data->brightness_on = led_cdev->max_brightness;
         led_cdev->trigger_data = timer_data;
 
         init_timer(&timer_data->timer);