From mboxrd@z Thu Jan  1 00:00:00 1970
From: Hans Verkuil <hverkuil@xs4all.nl>
Subject: Re: [PATCH v5 0/8] Add MT8173 Video Encoder Driver and VPU Driver
Date: Fri, 26 Feb 2016 14:09:44 +0100
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To: Stanimir Varbanov <svarbanov@mm-sol.com>, Tiffany Lin <tiffany.lin@mediatek.com>, Hans Verkuil <hans.verkuil@cisco.com>, daniel.thompson@linaro.org, Rob Herring <robh+dt@kernel.org>, Mauro Carvalho Chehab <mchehab@osg.samsung.com>, Matthias Brugger <matthias.bgg@gmail.com>, Daniel Kurtz <djkurtz@chromium.org>, Pawel Osciak <posciak@chromium.org>
Cc: Eddie Huang <eddie.huang@mediatek.com>, Yingjoe Chen <yingjoe.chen@mediatek.com>, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linux-mediatek@lists.infradead.org, PoChun.Lin@mediatek.com
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On 02/26/2016 12:58 PM, Stanimir Varbanov wrote:
> Hi Hans,
> 
> <snip>
> 
>> Nice!
>>
>> Can you try 'v4l2-compliance -s'? Note that this may not work since I know
>> that v4l2-compliance doesn't work all that well with codecs, but I am
>> curious what the output is when you try streaming.
> 
> Sorry for the off topic question.
> 
> Does every new v4l2 encoder/decoder driver must use v4l2 mem2mem device
> framework, with other words is that mandatory?
> 

No, that's not mandatory. In most cases it will simplify your code, but
sometimes it only makes it harder and then you are better off doing it
yourself.

Regards,

	Hans