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Date: Fri, 24 Jun 2016 14:48:14 +0100 From: Nick Dyer <nick.dyer@...ev.co.uk> To: Dmitry Torokhov <dmitry.torokhov@...il.com>, Hans Verkuil <hverkuil@...all.nl> Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org, linux-media@...r.kernel.org, Benjamin Tissoires <benjamin.tissoires@...hat.com>, Benson Leung <bleung@...omium.org>, Alan Bowens <Alan.Bowens@...el.com>, Javier Martinez Canillas <javier@....samsung.com>, Chris Healy <cphealy@...il.com>, Henrik Rydberg <rydberg@...math.org>, Andrew Duggan <aduggan@...aptics.com>, James Chen <james.chen@....com.tw>, Dudley Du <dudl@...ress.com>, Andrew de los Reyes <adlr@...omium.org>, sheckylin@...omium.org, Peter Hutterer <peter.hutterer@...-t.net>, Florian Echtler <floe@...terbrot.org>, mchehab@....samsung.com Subject: Re: [PATCH v5 1/9] [media] v4l2-core: Add support for touch devices On 22/06/2016 23:08, 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 <nick.dyer@...ev.co.uk> > --- [...] > diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h > index 8f95191..7e19782 100644 > --- a/include/uapi/linux/videodev2.h > +++ b/include/uapi/linux/videodev2.h > @@ -143,6 +143,7 @@ enum v4l2_buf_type { > V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE = 10, > V4L2_BUF_TYPE_SDR_CAPTURE = 11, > V4L2_BUF_TYPE_SDR_OUTPUT = 12, > + V4L2_BUF_TYPE_TOUCH_CAPTURE = 13, > /* Deprecated, do not use */ > V4L2_BUF_TYPE_PRIVATE = 0x80, > }; > @@ -440,6 +441,8 @@ struct v4l2_capability { > #define V4L2_CAP_ASYNCIO 0x02000000 /* async I/O */ > #define V4L2_CAP_STREAMING 0x04000000 /* streaming I/O ioctls */ > > +#define V4L2_CAP_TOUCH 0x00100000 /* Is a touch device */ Apologies, this should have been #define V4L2_CAP_TOUCH 0x10000000 You will find my changes to v4l2-compliance to support these changes here: https://github.com/ndyer/v4l-utils I've tested the atmel_mxt_ts version of this with v4l2-compliance on Pixel 2.
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