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Date:   Mon, 29 Mar 2021 11:15:33 +0300
From:   Pekka Paalanen <ppaalanen@gmail.com>
To:     Paul Cercueil <paul@crapouillou.net>
Cc:     Simon Ser <contact@emersion.fr>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        David Airlie <airlied@linux.ie>, linux-kernel@vger.kernel.org,
        od@zcrc.me, dri-devel@lists.freedesktop.org, stable@vger.kernel.org
Subject: Re: [PATCH] drm: DON'T require each CRTC to have a unique primary
 plane
Message-ID: <20210329111533.47e44f72@eldfell>
In-Reply-To: <24LMQQ.CRNKYEI6GB2T1@crapouillou.net>
References: <20210327112214.10252-1-paul@crapouillou.net>
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        <24LMQQ.CRNKYEI6GB2T1@crapouillou.net>
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On Sat, 27 Mar 2021 11:26:26 +0000
Paul Cercueil <paul@crapouillou.net> wrote:

> It has two mutually exclusive background planes (same Z level) + one=20
> overlay plane.

What's the difference between the two background planes?

How will generic userspace know to pick the "right" one?


Thanks,
pq

> Le sam. 27 mars 2021 =C3=A0 11:24, Simon Ser <contact@emersion.fr> a =C3=
=A9crit=20
> :
> > On Saturday, March 27th, 2021 at 12:22 PM, Paul Cercueil=20
> > <paul@crapouillou.net> wrote:
> >  =20
> >>  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. =20
> >=20
> > Why does this driver expose two primary planes, if it only has a=20
> > single
> > CRTC? =20
>=20
>=20
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel


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