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SubjectRe: input question: ambient light sensor button
On Wed, Nov 13, 2013 at 11:47:18AM +0100, Jiri Kosina wrote:
> On Sun, 15 Sep 2013, Pali Rohár wrote:
> > I do not know where to ask this question, but I think that kernel
> > developers could help me.
> >
> > I have notebook with one special button on keyboard which is
> > designed for turning ambient light sensor on and off. By default
> > pressing button do nothing (I can turn ambient light sensor on/off
> > via sysfs platform wmi module). Button press is reported by
> > kernel input device AT Translated Set 2 keyboard and reports it
> > as button "touchpad off".
> >
> > Of course "touchpad off" is incorrect and I'd like to ask which
> > kernel key or button from /usr/include/linux/input.h should be
> > mapped for my ambient light sensor button? Is there already some?
> > And what is strategy for allocating KEY_* and BTN_* numbers?
> This is maintained by Dmitry, so he's the one to answer this. I am adding
> him to CC.

I guess we need patch adding

#define KEY_ALS_TOGGLE 0x230


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