56240107f8
author Peter Hutterer <peter.hutterer@who-t.net> 1283058047 -0700
committer Dmitry Torokhov <dmitry.torokhov@gmail.com> 1283060774 -0700

Input: wacom_w8001 - add multitouch slot support

Some serial wacom devices support two-finger touch. Test for this during
init and parse the touch packets accordingly. Touch packets are
processed using Protocol B (MT Slots).

Note: there are several wacom versions that do touch but not two-finger
touch. These are not catered for here, touch events for these are simply
discarded.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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