linux-kernel - Re: [PATCH resend 0/5] video: fbdev: ssd1307fb: Optimizations and improvements

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Message-ID: <CAKMK7uGpmQ3=OB52RYFgJoH7FWwhgx1t-TcSwpwjHPMWcyRd0w@mail.gmail.com>
Date:   Tue, 20 Jul 2021 16:53:29 +0200
From:   Daniel Vetter <daniel@...ll.ch>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Sam Ravnborg <sam@...nborg.org>, David Airlie <airlied@...ux.ie>,
        Maxime Ripard <mripard@...nel.org>,
        Linux Fbdev development list <linux-fbdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        DRI Development <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH resend 0/5] video: fbdev: ssd1307fb: Optimizations and improvements

On Thu, Jul 15, 2021 at 8:54 AM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
>
> Hi Sam,
>
> On Wed, Jul 14, 2021 at 5:27 PM Sam Ravnborg <sam@...nborg.org> wrote:
> > On Wed, Jul 14, 2021 at 04:57:59PM +0200, Geert Uytterhoeven wrote:
> > > This patch series optimizes console operations on ssd1307fb, after the
> > > customary fixes and cleanups.
> >
> > What is required to to have a drm driver that could do the same?
>
> Add monochrome support to DRM?

I think the bits that are missing for that are
- wiring up the conversion from R* formats to their fbdev counterparts
in the emulation helper (if you want to support userspace sending the
native format directly through fbdev

Everything else is there and we have drivers doing this, e.g.
drm/tiny/repaper.c.
-Daniel

>
> > Note: I will take a look at the patches a bit later.
>
> TIA!
>
> 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



-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch