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leds: led-class: Retain the latest user brightness request

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Retain the latest user brightness request. This ensures
that when a max brightness limit is altered, the last
brightness request is taken into account, when restoring
the current brightness.

Change-Id: I6461e06f64abe336cabc27a3992d734f1fb745c6
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>
This commit is contained in:
Ram Chandrasekar 2015-04-02 10:44:57 -06:00 committed by Archana Sriram
parent 0ba12a1e95
commit 29cca490d4
2 changed files with 3 additions and 1 deletions
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3
drivers/leds/led-class.c
View file

@ -57,6 +57,7 @@ static ssize_t brightness_store(struct device *dev,
if (state == LED_OFF && !(led_cdev->flags & LED_KEEP_TRIGGER))
led_trigger_remove(led_cdev);
led_set_brightness(led_cdev, state);
led_cdev->usr_brightness_req = state;
ret = size;
unlock:
@ -85,7 +86,7 @@ static ssize_t max_brightness_store(struct device *dev,
return ret;
led_cdev->max_brightness = state;
led_set_brightness(led_cdev, led_cdev->brightness);
led_set_brightness(led_cdev, led_cdev->usr_brightness_req);
return size;
}

1
include/linux/leds.h
View file

@ -37,6 +37,7 @@ struct led_classdev {
const char *name;
enum led_brightness brightness;
enum led_brightness max_brightness;
enum led_brightness usr_brightness_req;
int flags;
/* Lower 16 bits reflect status */