On Sat 2018-04-21 09:50:08, Javier Arteaga wrote: > Allow userspace to use the on-board LEDs as "upboard:<color>:". > > Signed-off-by: Javier Arteaga <[email protected]>
> +static enum led_brightness upboard_led_brightness_get(struct led_classdev
> *cdev)
> +{
> + struct upboard_led *led = container_of(cdev, struct upboard_led, cdev);
> + int brightness = 0;
> +
> + regmap_field_read(led->field, &brightness);
> +
> + return brightness;
> +};
I'm slightly confused here. Is each led controlled by single bit?
> +static void upboard_led_brightness_set(struct led_classdev *cdev,
> + enum led_brightness brightness)
> +{
> + struct upboard_led *led = container_of(cdev, struct upboard_led, cdev);
> +
> + regmap_field_write(led->field, brightness != LED_OFF);
> +};
What is going on with ";" at end of function? We don't do that.
If it is single bit, max_brightness should be one, and != LED_OFF test
should not be needed.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
signature.asc
Description: Digital signature
