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Date:   Mon, 7 Jun 2021 10:43:59 +0200
From:   Maxime Ripard <maxime@cerno.tech>
To:     Jernej Skrabec <jernej.skrabec@gmail.com>
Cc:     wens@csie.org, airlied@linux.ie, daniel@ffwll.ch,
        daniel.stone@collabora.com, dri-devel@lists.freedesktop.org,
        linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev,
        linux-kernel@vger.kernel.org,
        Piotr Oniszczuk <piotr.oniszczuk@gmail.com>
Subject: Re: [PATCH] drm/sun4i: de3: Be explicit about supported modifiers
Message-ID: <20210607084359.hkm6ng2m4hcoheyz@gilmour>
References: <20210605073534.3786194-1-jernej.skrabec@gmail.com>
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On Sat, Jun 05, 2021 at 09:35:34AM +0200, Jernej Skrabec wrote:
> From: Piotr Oniszczuk <piotr.oniszczuk@gmail.com>
>=20
> Currently only linear formats are supported in sun4i-drm driver, but
> SoCs like H6 supports AFBC variant of some of them in multiple cores
> (GPU, VPU, DE3). Panfrost already implements AFBC compression and is
> sometimes confused what should be default choice (linear, AFBC) if DRM
> driver is not explicit about modifier support (MiniMyth2 distro with
> MythTV app).
>=20
> After some discussion with Daniel Stone on #panfrost IRC, it was decided
> to make modifiers in sun4i-drm explicit, to avoid any kind of guessing,
> not just in panfrost, but everywhere. In fact, long term idea is to make
> modifier parameter in drm_universal_plane_init() mandatory (non NULL).
>=20
> Signed-off-by: Piotr Oniszczuk <piotr.oniszczuk@gmail.com>
> Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Applied, thanks
Maxime

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