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

Paul Cercueil paul at crapouillou.net
Mon Mar 29 16:15:06 UTC 2021



Le lun. 29 mars 2021 à 15:42, Simon Ser <contact at emersion.fr> a écrit 
:
> On Monday, March 29th, 2021 at 5:39 PM, Paul Cercueil 
> <paul at crapouillou.net> wrote:
> 
>>  Ok, I read that as "all drivers should provide AT LEAST one primary
>>  plane per CRTC", and not as "all drivers should provide ONE AND ONLY
>>  ONE primary plane per CRTC". My bad.
> 
> Yeah, it's a little complicated to document, because it's possible for
> a primary plane to be compatible with multiple CRTCs… We tried to
> improve this [1] recently.
> 
> [1]: 
> https://dri.freedesktop.org/docs/drm/gpu/drm-kms.html#plane-abstraction

Ok, that is definitely much clearer :)

-Paul




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