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In cases such as DRM_FORMAT_MOD_SAMSUNG_16_16_TILE, the modifier describes a generic pixel re-ordering which can be applicable to multiple vendors. Define an alias: DRM_FORMAT_MOD_GENERIC_16_16_TILE, which can be used to describe this layout in a vendor-neutral way, and add a comment about the expected usage of such "generic" modifiers. Changes in v2: - Move note about future cases to comment (Daniel) Signed-off-by: Brian Starkey <brian.starkey@arm.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200626164800.11595-1-brian.starkey@arm.com