[PATCH] drm/cirrus: rewrite and modernize driver.

[Adam Jackson]

On Wed, 2019-04-03 at 16:15 +0100, Daniel Stone wrote:

> There's already a list of supported formats for each DRM plane, which
> you can get via drmModeGetPlane (being careful to enable universal
> planes so you can discover the primary plane). The same information is
> present in the 'IN_FORMATS' property, which is more difficult to parse
> but also tells you about modifiers.
> 
> modesetting already pulls all this out (at least in the atomic path)
> so we can reason about acceptable modifiers.

D'oh, I knew that. The problem then is modesetting isn't pulling that
info out early enough in PreInit. I'll consider that another case of
xorg/xserver#9 then.

- ajax