Hey, we are currently working on a led driver that we will eventually propose mainline. Our HW implies a kind of dominance where one LED can have multiple colors, but only one can be lid at once. Lighting the dominant effectively (visible) turns off the recessive. The question is whether that visible effect should be reflected in the code. Or in other words, should the "brightness" in sysfs always correspond to what is actually visible? Our first version does not try to do that, because that would complicate the code a lot. LEDs would have to set each other and possibly remember to reset each other when they get toggled again. I doubt that being the first example of such an LED, but could not find a good example in the kernel. Maybe you can point out a driver that handles this problem in the "correct" way. regards, Henning
