linux-kernel - Re: [PATCH v2 07/10] media: platform: Add Sunxi-Cedrus VPU decoder driver

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Message-ID: <35411894a87b65865eb8b43e5f50829db336a323.camel@bootlin.com>
Date:   Fri, 04 May 2018 09:57:20 +0200
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc:     linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>, Pawel Osciak <pawel@...iak.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Arnd Bergmann <arnd@...db.de>,
        Alexandre Courbot <acourbot@...omium.org>,
        Tomasz Figa <tfiga@...omium.org>
Subject: Re: [PATCH v2 07/10] media: platform: Add Sunxi-Cedrus VPU decoder
 driver

Hi,

On Tue, 2018-04-24 at 12:13 +0300, Sakari Ailus wrote:
> Hi Paul
> 
> On Thu, Apr 19, 2018 at 05:45:33PM +0200, Paul Kocialkowski wrote:
> > This introduces the Sunxi-Cedrus VPU driver that supports the VPU
> > found
> > in Allwinner SoCs, also known as Video Engine. It is implemented
> > through
> > a v4l2 m2m decoder device and a media device (used for media
> > requests).
> > So far, it only supports MPEG2 decoding.
> > 
> > Since this VPU is stateless, synchronization with media requests is
> > required in order to ensure consistency between frame headers that
> > contain metadata about the frame to process and the raw slice data
> > that
> > is used to generate the frame.
> > 
> > This driver was made possible thanks to the long-standing effort
> > carried out by the linux-sunxi community in the interest of reverse
> > engineering, documenting and implementing support for Allwinner VPU.
> 
> No code review yet, but DT bindings precede the driver. Please also
> add the appropriate MAINTAINERS entries.

Thanks for the indication, will do in the next version(s).

Cheers,

-- 
Paul Kocialkowski, Bootlin (formerly Free Electrons)
Embedded Linux and kernel engineering
https://bootlin.com
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