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Message-ID: <20180911085355.bmd6gm24tkuxzdst@flea>
Date: Tue, 11 Sep 2018 10:53:55 +0200
From: Maxime Ripard <maxime.ripard@...tlin.com>
To: Paul Kocialkowski <contact@...lk.fr>
Cc: linux-media@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
devel@...verdev.osuosl.org,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Chen-Yu Tsai <wens@...e.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
linux-sunxi@...glegroups.com, Randy Li <ayaka@...lik.info>,
Hans Verkuil <hverkuil@...all.nl>,
Ezequiel Garcia <ezequiel@...labora.com>,
Tomasz Figa <tfiga@...omium.org>,
Alexandre Courbot <acourbot@...omium.org>,
Philipp Zabel <p.zabel@...gutronix.de>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Sakari Ailus <sakari.ailus@...ux.intel.com>
Subject: Re: [PATCH v9 0/9] Cedrus driver for the Allwinner Video Engine,
using media requests
On Fri, Sep 07, 2018 at 12:24:33AM +0200, Paul Kocialkowski wrote:
> This is the ninth iteration of the updated Cedrus driver,
> that supports the Video Engine found on most Allwinner SoCs, starting
> with the A10. It was tested on the A13, A20, A33 and H3.
>
> The initial version of this driver[0] was originally written and
> submitted by Florent Revest using a previous version of the request API
> that is necessary to provide coherency between controls and the buffers
> they apply to.
>
> The driver was adapted to use the latest version of the media request
> API[1], as submitted by Hans Verkuil. Media request API support is a
> hard requirement for the Cedrus driver.
>
> The driver itself currently only supports MPEG2 and more codecs will be
> added eventually. The default output frame format provided by the Video
> Engine is a multi-planar tiled YUV format (based on NV12). A specific
> format is introduced in the V4L2 API to describe it. Starting with the
> A33, the Video Engine can also output untiled YUV formats.
Applied the DTS patches, thanks!
Maxime
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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