linux-kernel - Re: [PATCH v4 2/9] [media] v4l2-core: Add VFL_TYPE_TOUCH

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Message-ID: <5767DAE4.3000202@xs4all.nl>
Date:	Mon, 20 Jun 2016 14:00:36 +0200
From:	Hans Verkuil <hverkuil@...all.nl>
To:	Nick Dyer <nick.dyer@...ev.co.uk>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
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 v4 2/9] [media] v4l2-core: Add VFL_TYPE_TOUCH_SENSOR

On 06/17/2016 04:16 PM, Nick Dyer wrote:
> Some touch controllers send out raw touch data in a similar way to a
> greyscale frame grabber. Add a new device type for these devices.
> 
> Use a new device prefix v4l-touch for these devices, to stop generic
> capture software from treating them as webcams.
> 
> Signed-off-by: Nick Dyer <nick.dyer@...ev.co.uk>
> ---
>  drivers/input/touchscreen/sur40.c    |  4 ++--
>  drivers/media/v4l2-core/v4l2-dev.c   | 13 ++++++++++---
>  drivers/media/v4l2-core/v4l2-ioctl.c | 15 ++++++++++-----
>  include/media/v4l2-dev.h             |  3 ++-
>  include/uapi/linux/videodev2.h       |  1 +

The new interface also needs to be documented in the media DocBook: section 4
describes all the interfaces, so a new one should be added here.

Sorry, just realized this.

I recommend that you grep for swradio:

git grep swradio Documentation/DocBook/media

and add a line there for v4l-touch as well. It also looks like a new interface
define is needed as a media type.

Regards,

	Hans