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

[Matt Whitlock]

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 the 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.

[Joseph Salisbury (jsalisbury)]

Hi Matt,

Can you send this patch request to the Ubuntu Kernel Team mailing list for review:
<email address hidden>

In your request, you can reference this bug.

Thanks in advance.

[Matt Whitlock (whitslack)]

Seth Forshee pointed out that input_mt_report_pointer_emulation exists for this purpose, so I've switched to it. Tested working.