[PATCH] drm: DON'T require each CRTC to have a unique primary plane

[Paul Cercueil]

It has two mutually exclusive background planes (same Z level) + one 
overlay plane.

-Paul


Le sam. 27 mars 2021 à 11:24, Simon Ser <contact at emersion.fr> a écrit 
:
> On Saturday, March 27th, 2021 at 12:22 PM, Paul Cercueil 
> <paul at crapouillou.net> wrote:
> 
>>  The ingenic-drm driver has two mutually exclusive primary planes
>>  already; so the fact that a CRTC must have one and only one primary
>>  plane is an invalid assumption.
> 
> Why does this driver expose two primary planes, if it only has a 
> single
> CRTC?