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Message-ID: <89099ac6-21f7-3538-8830-57baba256684@gmx.de>
Date:   Thu, 11 May 2023 18:23:43 +0200
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Subject: Re: [PATCH v6 1/6] fbdev/matrox: Remove trailing whitespaces
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To:     Geert Uytterhoeven <geert@linux-m68k.org>
Cc:     Thomas Zimmermann <tzimmermann@suse.de>,
        Sui Jingfeng <15330273260@189.cn>, javierm@redhat.com,
        daniel@ffwll.ch, vgupta@kernel.org, chenhuacai@kernel.org,
        kernel@xen0n.name, davem@davemloft.net, arnd@arndb.de,
        sam@ravnborg.org, linux-fbdev@vger.kernel.org,
        dri-devel@lists.freedesktop.org, linux-arch@vger.kernel.org,
        linux-snps-arc@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-ia64@vger.kernel.org, loongarch@lists.linux.dev,
        linux-m68k@lists.linux-m68k.org, sparclinux@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org
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From:   Helge Deller <deller@gmx.de>
In-Reply-To: <CAMuHMdX8piLhEbV+pcWvdn1OEGH9N5FwDOQcqNcEjBx3=ThjXA@mail.gmail.com>
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Precedence: bulk

On 5/11/23 15:10, Geert Uytterhoeven wrote:
> Hi Helge,
>
> On Thu, May 11, 2023 at 3:05=E2=80=AFPM Helge Deller <deller@gmx.de> wro=
te:
>> On 5/11/23 09:55, Thomas Zimmermann wrote:
>>> But the work I do within fbdev is mostly for improving DRM.
>>
>> Sure.
>>
>>> For the
>>> other issues in this file, I don't think that matroxfb should even be
>>> around any longer. Fbdev has been deprecated for a long time. But a
>>> small number of drivers are still in use and we still need its
>>> framebuffer console. So someone should either put significant effort
>>> into maintaining fbdev, or it should be phased out. But neither is
>>> happening.
>>
>> You're wrong.
>>
>> You don't mention that for most older machines DRM isn't an acceptable
>> way to go due to it's limitations, e.g. it's low-speed due to missing
>> 2D-acceleration for older cards and and it's incapability to change scr=
een
>> resolution at runtime (just to name two of the bigger limitations here)=
.
>> So, unless we somehow find a good way to move such drivers over to DRM
>> (with a set of minimal 2D acceleration), they are still important.
>
> DRM can change resolution at runtime,

Right, sure.

> just not through the fbdev API.

... and sadly the simpledrm-based drivers neither.

> Or do you mean the resolution of the text console, akin to
> "fbset <mode>"?

yes.

> I have to admit I do not know if there is a command
> line tool to do that...

Helge