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SubjectRe: Disable input device
On Sat 2014-11-29 18:24:03, Pali Rohár wrote:
> Hello,
>
> there is request to introduce some option (via sysfs) to disable
> one input device. Originally it was for tsc2005 touchscreen found
> on Nokia N900 cellphone. Use case is to completely disable
> touchscreen when phone is in pocket or when screen is locked via
> slide switch (to prevent random clicks).
>
> But it would be better to have disable option for all input
> devices. Sometimes input device is not use and only consume
> power. Another case is when input device (e.g. keyboard or
> touchpad) is integrated into machine (e.g. on laptops) and user
> does not want to use it (so make sure that kernel does not send
> events to userspace).
>
> I would like to ask, how to solve it?
>
> What do you think about adding new sysfs file "disable" (accept
> values 1 or 0) for every input device? With "1" it cause that
> kernel will drop all events from specific input device and if
> driver provide some function is can be called (e.g. for power
> management or disabling device at hardware level).

That makes sense to me. Dmitry, would such interface be acceptable?

Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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