linux-kernel - Re: [PATCH v2 05/10] drm/fourcc: Add DRM_FORMAT

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Message-ID: <CAMuHMdUOwVLBLmxaVUO4yADVCf1k7CyhBZiesHx2Fr4LW3QWMQ@mail.gmail.com>
Date:   Tue, 15 Mar 2022 08:52:21 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Pekka Paalanen <ppaalanen@...il.com>
Cc:     Finn Thain <fthain@...ux-m68k.org>,
        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>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Sam Ravnborg <sam@...nborg.org>, Helge Deller <deller@....de>,
        Linux Fbdev development list <linux-fbdev@...r.kernel.org>,
        "Linux/m68k" <linux-m68k@...r.kernel.org>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 05/10] drm/fourcc: Add DRM_FORMAT_C[124]

On Tue, Mar 15, 2022 at 8:51 AM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> > Also, when drm_fourcc.h is describing pixel formats, it needs to
> > consider only how a little-endian CPU accesses them. That's how pixel
> > data in memory is described. Display hardware plays no part in that.
> > It is the driver's job to expose the pixel formats that match display
> > hardware behaviour.
>
> But if the "CPU format" does not match the "display support",

s/support/format/

> all pixel data must be converted?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds