[PATCH] drm/vc4: Limit SAND tiling support to semiplanar YUV420 formats

[Eric Anholt]

Paul Kocialkowski <paul.kocialkowski at 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 at bootlin.com>

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