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Message-Id: <6TNQQQ.CQL1KN8NARCK@crapouillou.net>
Date: Mon, 29 Mar 2021 17:15:06 +0100
From: Paul Cercueil <paul@...pouillou.net>
To: Simon Ser <contact@...rsion.fr>
Cc: Maxime Ripard <maxime@...no.tech>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>, od@...c.me,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Subject: Re: [PATCH] drm: DON'T require each CRTC to have a unique primary
plane
Le lun. 29 mars 2021 à 15:42, Simon Ser <contact@...rsion.fr> a écrit
:
> On Monday, March 29th, 2021 at 5:39 PM, Paul Cercueil
> <paul@...pouillou.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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