linux-kernel - Re: [PATCH] drm/vc4: Limit SAND tiling support to semiplanar YUV420 formats

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Message-ID: <20190111155327.wbj3xgcfgz3tqmwo@flea>
Date:   Fri, 11 Jan 2019 16:53:27 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Eric Anholt <eric@...olt.net>
Cc:     Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Eben Upton <eben@...pberrypi.org>,
        David Airlie <airlied@...ux.ie>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH] drm/vc4: Limit SAND tiling support to semiplanar YUV420
 formats

On Fri, Dec 14, 2018 at 08:16:32AM -0800, Eric Anholt wrote:
> Paul Kocialkowski <paul.kocialkowski@...tlin.com> writes:
> 
> > Despite what the HVS documentation indicates, the VC4 does not actually
> > support SAND tiling modes for any RGB format and only semiplanar YUV420
> > formats (NV12/NV21) can be used in these tiling modes.
> >
> > The driver currently claims to support RGB formats for the associated
> > modifiers, so remove them from the supported list in the
> > format_mod_supported helper for RGB formats.
> >
> > Remove further checks that are no longer necessary along the way, since
> > semi-planar YUV420 formats support every SAND tiling mode.
> >
> > Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
> 
> Reviewed-by: Eric Anholt <eric@...olt.net>

Applied,

Maxime


-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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