Re: [PATCH 1/5] gpiolib: introduce set_debounce method

From: Alan Cox
Date: Fri May 21 2010 - 09:28:08 EST

> One of the earlier examples of why to want debouncing (in the
> original discussion, not this one) was for buttons (one signal
> per button press) and the hardware designers don't necessarily
> hook buttons up to only GPIOs with hardware debounce. So code
> to kick in debounce there needed to be sensitive to whether or
> not the capability was available ... and moreover, whether the
> debounce scale was adequate to compensate the contact chatter.
> When not, then software debounce was inescapable.

And someone who needs it can contribute it. The proposed patch causes no
problems in this area.

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