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, 2 insertions, 2 deletions

diff --git a/drivers/leds/ledtrig-heartbeat.c b/drivers/leds/ledtrig-heartbeat.c
index 4bf8cec8b8c1..c1c1ea6f817b 100644
--- a/drivers/leds/ledtrig-heartbeat.c
+++ b/drivers/leds/ledtrig-heartbeat.c
@@ -47,7 +47,7 @@ static void led_heartbeat_function(unsigned long data)
                         msecs_to_jiffies(heartbeat_data->period);
                 delay = msecs_to_jiffies(70);
                 heartbeat_data->phase++;
-                brightness = LED_FULL;
+                brightness = led_cdev->max_brightness;
                 break;
         case 1:
                 delay = heartbeat_data->period / 4 - msecs_to_jiffies(70);
@@ -56,7 +56,7 @@ static void led_heartbeat_function(unsigned long data)
         case 2:
                 delay = msecs_to_jiffies(70);
                 heartbeat_data->phase++;
-                brightness = LED_FULL;
+                brightness = led_cdev->max_brightness;
                 break;
         default:
                 delay = heartbeat_data->period - heartbeat_data->period / 4 -