On Wed, Jun 22, 2016 at 11:08:25PM +0100, Nick Dyer wrote:

Some touch controllers send out touch data in a similar way to a
greyscale frame grabber.

Use a new device prefix v4l-touch for these devices, to stop generic
capture software from treating them as webcams.

Add formats:
- V4L2_TCH_FMT_DELTA_TD16 for signed 16-bit touch deltas
- V4L2_TCH_FMT_DELTA_TD08 for signed 16-bit touch deltas
- V4L2_TCH_FMT_TU16 for unsigned 16-bit touch data
- V4L2_TCH_FMT_TU08 for unsigned 8-bit touch data

This support will be used by:
* Atmel maXTouch (atmel_mxt_ts)
* Synaptics RMI4.
* sur40

Signed-off-by: Nick Dyer <redacted>

Hans/Mauro, when you merge this can you make a stable branch (maybe
based on 4.6) so I can pull it in as well and then merge the rest?

Thanks!

-- 
Dmitry