From: Nick Dyer <nick.dyer@itdev.co.uk>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Hans Verkuil <hverkuil@xs4all.nl>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-media@vger.kernel.org,
Benjamin Tissoires <benjamin.tissoires@redhat.com>,
Benson Leung <bleung@chromium.org>,
Alan Bowens <Alan.Bowens@atmel.com>,
Javier Martinez Canillas <javier@osg.samsung.com>,
Chris Healy <cphealy@gmail.com>,
Henrik Rydberg <rydberg@bitmath.org>,
Andrew Duggan <aduggan@synaptics.com>,
James Chen <james.chen@emc.com.tw>, Dudley Du <dudl@cypress.com>,
Andrew de los Reyes <adlr@chromium.org>,
sheckylin@chromium.org, Peter Hutterer <peter.hutterer@who-t.net>,
Florian Echtler <floe@butterbrot.org>,
mchehab@osg.samsung.com
Subject: Re: [PATCH v5 1/9] [media] v4l2-core: Add support for touch devices
Date: Fri, 24 Jun 2016 14:48:14 +0100 [thread overview]
Message-ID: <1c9fda7b-441b-0110-bd10-b1b654e016de@itdev.co.uk> (raw)
In-Reply-To: <1466633313-15339-2-git-send-email-nick.dyer@itdev.co.uk>
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@itdev.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.
next prev parent reply other threads:[~2016-06-24 13:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-22 22:08 [PATCH v5 0/9] Output raw touch data via V4L2 Nick Dyer
2016-06-22 22:08 ` [PATCH v5 1/9] [media] v4l2-core: Add support for touch devices Nick Dyer
2016-06-23 22:41 ` Dmitry Torokhov
2016-06-24 13:48 ` Nick Dyer [this message]
2016-06-27 11:02 ` Hans Verkuil
2016-06-22 22:08 ` [PATCH v5 2/9] Input: atmel_mxt_ts - add support for T37 diagnostic data Nick Dyer
2016-06-22 22:08 ` [PATCH v5 3/9] Input: atmel_mxt_ts - output diagnostic debug via v4l2 device Nick Dyer
2016-06-27 11:10 ` Hans Verkuil
2016-06-22 22:08 ` [PATCH v5 4/9] Input: atmel_mxt_ts - read touchscreen size Nick Dyer
2016-06-22 22:08 ` [PATCH v5 5/9] Input: atmel_mxt_ts - handle diagnostic data orientation Nick Dyer
2016-06-22 22:08 ` [PATCH v5 6/9] Input: atmel_mxt_ts - add diagnostic data support for mXT1386 Nick Dyer
2016-06-22 22:08 ` [PATCH v5 7/9] Input: atmel_mxt_ts - add support for reference data Nick Dyer
2016-06-27 11:11 ` Hans Verkuil
2016-06-22 22:08 ` [PATCH v5 8/9] Input: synaptics-rmi4 - add support for F54 diagnostics Nick Dyer
2016-06-23 17:04 ` Dmitry Torokhov
2016-06-27 11:19 ` Hans Verkuil
2016-06-22 22:08 ` [PATCH v5 9/9] Input: sur40 - use new V4L2 touch input type Nick Dyer
2016-06-23 6:41 ` Florian Echtler
2016-06-27 11:06 ` Hans Verkuil
2016-06-27 11:26 ` [PATCH v5 0/9] Output raw touch data via V4L2 Hans Verkuil
2016-06-27 11:57 ` Nick Dyer
2016-06-27 12:22 ` Hans Verkuil
2016-06-27 12:51 ` Nick Dyer
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