linux-kernel - Re: [PATCH] MAINTAINERS: Add Helge as fbdev maintainer

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Date:   Tue, 18 Jan 2022 13:48:06 +0100
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     Helge Deller <deller@....de>
Cc:     Daniel Vetter <daniel@...ll.ch>,
        Linux Fbdev development list <linux-fbdev@...r.kernel.org>,
        Sven Schnelle <svens@...ckframe.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] MAINTAINERS: Add Helge as fbdev maintainer

  Hi,

> > fbcon/fbdev emulation: RGB332 support must be added I think.  But both
> > argb888 and rgb565 are supported today, so it should not be hard to find
> > the places where you have to add some code to handle RGB332 too.
> 
> I'd expect that that framework is provided by DRM developers if there is the wish
> to get rid of old fbdev and transition existing drivers over to use DRM.

Good luck with that.  Asking people to code up stuff they can't even
test due to lack of hardware isn't going to fly very well.

> > Yes.  The world shifted from 2d acceleration to 3d acceleration.  Modern
> > hardware simply has no classic blitter any more.  Which is a problem
> > when it comes to keeping scroll acceleration alive, it is already a very
> > niche use case and it will only become worse ...
> 
> For me it's Ok that the DRM drivers don't use 2d acceleration (as it is today
> with the arguments mentioned multiple times).
> But the patches broke existing fbdev acceleration which is available by
> the fbdev drivers. That's a big regression from point of fbdev.

Keeping it alive and working will be a tough challenge.  2d acceleration
is a thing of the past and the number of people which are able and
willing to put effort into supporting it will only decline.  It has been
a problem for a while already, basically it was dropped due to lack of
support ...

take care,
  Gerd