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

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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>
This commit is contained in:
Guennadi Liakhovetski
2009-01-10 18:54:39 +00:00
committed by Richard Purdie
parent a7d878af94
commit 1bd465e6b0
7 changed files with 29 additions and 8 deletions
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2
drivers/leds/ledtrig-timer.c
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@@ -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);