linux-kernel - Re: [PATCH 28/37] drm/vc4: Enable bg_fill if there are no planes enabled

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Message-ID: <76a344eb23149909d13ea46c25b97684@kernel.org>
Date: Thu, 24 Oct 2024 15:10:01 +0000
From: "Maxime Ripard" <mripard@...nel.org>
To: "Dave Stevenson" <dave.stevenson@...pberrypi.com>
Cc: devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org, "Broadcom
 internal kernel review list" <bcm-kernel-feedback-list@...adcom.com>, "Catalin
 Marinas" <catalin.marinas@....com>, "Conor Dooley" <conor+dt@...nel.org>, "David
 Airlie" <airlied@...il.com>, "Florian Fainelli" <florian.fainelli@...adcom.com>, "Javier
 Martinez Canillas" <javierm@...hat.com>, "Krzysztof Kozlowski" <krzk+dt@...nel.org>, "Maarten
 Lankhorst" <maarten.lankhorst@...ux.intel.com>, "Maxime Ripard" <mripard@...nel.org>,
 Maíra Canal <mcanal@...lia.com>, "Michael Turquette" <mturquette@...libre.com>, "Raspberry
 Pi Kernel Maintenance" <kernel-list@...pberrypi.com>, "Ray Jui" <rjui@...adcom.com>, "Rob
 Herring" <robh@...nel.org>, "Scott Branden" <sbranden@...adcom.com>, "Simona
 Vetter" <simona@...ll.ch>, "Stephen Boyd" <sboyd@...nel.org>, "Thomas
 Zimmermann" <tzimmermann@...e.de>, "Will Deacon" <will@...nel.org>
Subject: Re: [PATCH 28/37] drm/vc4: Enable bg_fill if there are no planes
 enabled

On Wed, 23 Oct 2024 17:50:25 +0100, Dave Stevenson wrote:
> The default was to have enable_bg_fill disabled and the first
> plane set it if it wasn't opaque and covering the whole screen.
> However that meant that if no planes were enabled, then the
> background fill wasn't enabled, and would give a striped
> output from the uninitialised output buffer.
> 
> [ ... ]

Reviewed-by: Maxime Ripard <mripard@...nel.org>

Thanks!
Maxime