linux-kernel - Re: [PATCH 3/7] [Media] vcodec: mediatek: Add Mediatek V4L2 Video Decoder Driver

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Message-ID: <1461001697.2719.7.camel@gmail.com>
Date:	Mon, 18 Apr 2016 13:48:17 -0400
From:	Nicolas Dufresne <nicolas.dufresne@...il.com>
To:	tiffany lin <tiffany.lin@...iatek.com>,
	Hans Verkuil <hverkuil@...all.nl>
Cc:	Pawel Osciak <pawel@...iak.com>,
	Hans Verkuil <hans.verkuil@...co.com>,
	daniel.thompson@...aro.org, Rob Herring <robh+dt@...nel.org>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Daniel Kurtz <djkurtz@...omium.org>,
	Pawel Osciak <posciak@...omium.org>,
	Eddie Huang <eddie.huang@...iatek.com>,
	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
	linux-mediatek@...ts.infradead.org, PoChun.Lin@...iatek.com
Subject: Re: [PATCH 3/7] [Media] vcodec: mediatek: Add Mediatek V4L2 Video
 Decoder Driver

Le lundi 18 avril 2016 à 16:22 +0800, tiffany lin a écrit :
> > > We are plaining to remove m2m framework in th feature, although
> we think
> > 
> > Remove it for just the decoder driver or both encoder and decoder?
> > 
> Remove it from decoder driver.

Did you look at how CODA handle it (drivers/media/platform/coda/coda-
common.c) ? I don't know any detail, but they do have the same issue
and use both v4l2_m2m_fop_poll and v4l2_m2m_fop_mmap.

cheers,
Nicolas