On Thu, Nov 28, 2013 at 01:54:10PM +0100, Marc Dietrich wrote: [...] > Yes, rfkill is just an interface for userspace to able to control the gpio. > E.g. backlight of medcom-wide seems to be related to the pwm controller, but > is not a subnode of it. Instead it is a device of its own without parent. > Hence, we may include rfkill in a similar, "free-standing" node. But this > approch was rejected in the past. Maybe this changed now.
Indeed. I think we really do need ways to represent this kind of device. If we can't then how are we supposed to get rid of board files? > Thinking a bit more about it, rfkill is neither a hw block nor a function of > the wifi driver, so I guess it cannot be added to the usb controller (or a > usb > device). I guess it depends a bit. Some rfkill-type devices may control more than just WiFi (bluetooth, NFC, ...). If it really only controls WiFi, I think it would still be reasonable to represent it as a child of the WiFi device. It is, after all, a mechanism to control the WiFi hardware. Alternatively I suppose we wouldn't really need to have an explicit node. The WiFi driver could simply instantiate an rfkill device based on its own properties. Thierry
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