From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Anholt <eric@anholt.net>
Subject: Re: [PATCH] drm/vc4: Limit SAND tiling support to semiplanar YUV420 formats
Date: Fri, 14 Dec 2018 08:16:32 -0800
Message-ID: <87d0q4f5i7.fsf@anholt.net>
References: <20181214141218.12671-1-paul.kocialkowski@bootlin.com>
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Cc: David Airlie <airlied@linux.ie>, Boris Brezillon <boris.brezillon@bootlin.com>, Eben Upton <eben@raspberrypi.org>, Maxime Ripard <maxime.ripard@bootlin.com>, Thomas Petazzoni <thomas.petazzoni@bootlin.com>, Paul Kocialkowski <paul.kocialkowski@bootlin.com>
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Paul Kocialkowski <paul.kocialkowski@bootlin.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@bootlin.com>

Reviewed-by: Eric Anholt <eric@anholt.net>

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