linux-kernel - Re: [PATCH 8/8] drm/fourcc: Add DRM_FORMAT

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Message-ID: <DcHC6EkcAbkIdUGwoi3NJ9dU_zOwtndgZvp6ynoG05hPKPphZNEBAGWo25xgkxjjfmqzn2vBJcc3xGaFEMfWqY0jXNus1sWjmZSr9yzkcZE=@emersion.fr>
Date:   Thu, 17 Feb 2022 10:11:32 +0000
From:   Simon Ser <contact@...rsion.fr>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, Helge Deller <deller@....de>,
        Javier Martinez Canillas <javierm@...hat.com>,
        linux-fbdev@...r.kernel.org, linux-m68k@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 8/8] drm/fourcc: Add DRM_FORMAT_D1

Hi,

On Tuesday, February 15th, 2022 at 17:52, Geert Uytterhoeven <geert@...ux-m68k.org> wrote:

> Introduce a fourcc code for a single-channel frame buffer format with two
> darkness levels. This can be used for two-level dark-on-light displays.

The previous patches introduce C1 and R1. Do we really need D1? Can't
we just use R1 instead?

Simon