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Date:   Tue, 22 Jan 2019 11:09:23 +0100
From:   Paul Kocialkowski <>
To:     Maxime Ripard <>
Cc:,,,, David Airlie <>,
        Daniel Vetter <>, Chen-Yu Tsai <>,
        Maarten Lankhorst <>,
        Sean Paul <>,
        Thomas Petazzoni <>
Subject: Re: [PATCH RESEND v5 00/23] drm/sun4i: Support for linear and tiled
 YUV formats with the frontend


On Fri, 2019-01-18 at 19:20 +0100, Maxime Ripard wrote:
> On Fri, Jan 18, 2019 at 03:51:10PM +0100, Paul Kocialkowski wrote:
> > This series implements support for YUV formats using the display engine
> > frontend in the sun4i DRM driver, with various fixes along the way.
> > Scaling is supported for every format handled by the frontend.
> > 
> > The tiling mode used by the VPU on Allwinner platforms is also supported
> > by this series and a dedicated fourcc modifier is introduced, along with
> > a specific ioctl for allocating tiled buffers.
> > 
> > New common fourcc helpers are also introduced in this series, especially
> > related to YUV formats.
> > 
> > This was tested on the A33, A20 and A10 platforms and all supported
> > features work properly on them. Framebuffer offsets and source
> > positions are not supported at this point.
> I've applied everything, however I can't see the ioctl you mentionned
> anywhere?

Thanks for the merge! Oops, I should have updated the cover letter more
carefully: this was removed from the series and I didn't come up with
an implementation of the generic ioctl yet.



Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering

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