[PATCH] make ektf3k driver report non-MT events too

[Matt Whitlock]

Joseph Salisbury requested that I submit this patch to the Ubuntu Kernel Team mailing list for review.

> This patch resolves a shortcoming of the ektf3k driver. Previously, the
> driver was reporting only multi-touch events. xf86-input-evdev 2.7.3
> crashes upon receiving input events from [that] driver, and 2.8.1 simply
> ignores the input device altogether as a workaround for the crash.
> 
> This patch adds single-touch ABS_X, ABS_Y, and ABS_PRESSURE axes, as well as
> the BTN_TOUCH key. Only the first finger touching reports on these
> single-touch axes (while continuing to report on the multi-touch axes);
> additional fingers report only on the multi-touch axes.
> 
> I have tested this patch on a Nexus 7 running X.org server 1.13.4 and
> xf86-input-evdev 2.8.1. Without the patch, evdev ignores all input from the
> touchscreen. With the patch, evdev generates mouse events in response to
> touches, as one would expect.

https://bugs.launchpad.net/ubuntu/+source/linux-grouper/+bug/1209049
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