Re: [PATCH 2/2] input: mt: Document the MT event slot protocol (rev3)

From: Henrik Rydberg
Date: Fri May 21 2010 - 13:50:10 EST

Dmitry Torokhov wrote:
> I guess this is where our disconnect lies as when I am looking at the
> event names I view all *_MT_* events as related to the multitouch
> protocol handling.

Yes. It is true that slot control is MT related, but I am looking at this from
the perspective of future expansions like KEY_MT, KEY_REL, and such, finding a
way to signal to user space which events are handled via slots. If we had
ABS_MT_SLOT, we would most likely get applications which store ABS_MT_SLOT as an
attribute of the slot together with ABS_MT_POSITION_X, ABS_MT_TOUCH_MAJOR, etc,
which is just not right. So the proposal is ABS_SLOT. May we have your verdict,
please. :-)

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