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SubjectRe: input question: ambient light sensor button
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'd like to know this, so udev could have correct DMI keymap
> hooks and other userspace programs can understand ambient light
> sensor button correctly.

--
Jiri Kosina
SUSE Labs
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