I am currently integrating LED subsystem and V4L2 Flash API. V4L2 Flash API defines units of torch and flash intensity in milliampers. In the LED subsystem documentation I can't find any reference to the brightness units. On the other hand there is led_brightness enum defined in the <linux/leds.h> header, with LED_FULL = 255, but not all leds drivers use it. I am aware that there are LEDs that can be only turned on/off without any possibility to set the current and in such cases LED_FULL doesn't reflect the current set. So far I've assumed that brightness is expressed in milliampers and I don't stick to the LED_FULL limit. It allows for passing flash/torch intensity from V4L2 controls to the leds API without conversion. I am not sure if the units should be fixed to milliampers in the LED subsystem or not. It would clarify the situation, but if the existing LED drivers don't stick to this unit then it would make a confusion. In view of the above I'd like to ask for any advice on how to proceed. Thanks, Jacek Anaszewski -- To unsubscribe from this list: send the line "unsubscribe linux-leds" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
