linux-kernel - Re: [PATCH 1/2] [media] atmel-isc: add the Image Sensor Controller code

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Date:	Mon, 18 Apr 2016 09:24:14 +0200
From:	Hans Verkuil <hverkuil@...all.nl>
To:	Songjun Wu <songjun.wu@...el.com>, g.liakhovetski@....de,
	nicolas.ferre@...el.com
Cc:	linux-arm-kernel@...ts.infradead.org,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>,
	Mikhail Ulyanov <mikhail.ulyanov@...entembedded.com>,
	Fabien Dessenne <fabien.dessenne@...com>,
	Peter Griffin <peter.griffin@...aro.org>,
	Benoit Parrot <bparrot@...com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Gerd Hoffmann <kraxel@...hat.com>,
	Richard Röjfors <richard@...finpack.se>,
	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: [PATCH 1/2] [media] atmel-isc: add the Image Sensor Controller
 code

On 04/13/2016 09:44 AM, Songjun Wu wrote:
> Add driver for the Image Sensor Controller. It manages
> incoming data from a parallel based CMOS/CCD sensor.
> It has an internal image processor, also integrates a
> triple channel direct memory access controller master
> interface.
> 
> Signed-off-by: Songjun Wu <songjun.wu@...el.com>

Hi Songjun,

Before this driver can be accepted it has to pass the v4l2-compliance test.
The v4l2-compliance utility is here:

git://linuxtv.org/v4l-utils.git

Compile the utility straight from this repository so you're up to date.

First fix any failures you get when running 'v4l2-compliance', then do the
same when running 'v4l2-compliance -s' (now it is streaming as well) and
finally when running 'v4l2-compliance -f' (streaming and testing all available
formats).

I would like to see the output of 'v4l2-compliance -f' as part of the cover
letter of the next patch series.

Looking at the code I see that it will definitely fail a few tests :-)

Certainly the VIDIOC_CREATE_BUFS support in the queue_setup function is missing.
Read the comments for queue_setup in videobuf2-core.h for more information.

Regards,

	Hans