[PATCH v3 00/10] drm: Add support for low-color frame buffer formats
Sam Ravnborg
sam at ravnborg.org
Mon Jul 11 09:12:51 UTC 2022
Hi Thomas,
On Mon, Jul 11, 2022 at 10:50:00AM +0200, Thomas Zimmermann wrote:
> Hi
>
> Am 09.07.22 um 15:38 schrieb Sam Ravnborg:
> > Hi Geert,
> >
> > On Fri, Jul 08, 2022 at 08:20:45PM +0200, Geert Uytterhoeven wrote:
> > > Hi all,
> > >
> > > A long outstanding issue with the DRM subsystem has been the lack of
> > > support for low-color displays, as used typically on older desktop
> > > systems, and on small embedded displays.
>
> For the patchset
>
> Acked-by: Thomas Zimemrmann <tzimmermann at suse.de>
>
> >
> > IT is super to have this addressed - thanks!
> >
> > >
> > > This patch series adds support for color-indexed frame buffer formats
> > > with 2, 4, and 16 colors. It has been tested on ARAnyM using a
> > > work-in-progress Atari DRM driver supporting 2, 4, 16, 256, and 65536
> > > colors, with text console operation, fbtest, and modetest.
> > >
> > > Overview:
> > > - Patch 1 introduces a helper, to be used by later patches in the
> > > series,
> > > - Patch 2 introduces a flag to indicate color-indexed formats,
> > > - Patches 3 and 4 correct calculations of bits per pixel for sub-byte
> > > pixel formats,
> > > - Patches 5 and 6 introduce the new C[124] formats,
> > > - Patch 7 fixes an untested code path,
> > > - Patch 8 documents the use of "red" for light-on-dark displays,
> > > - Patches 9 and 10 add more fourcc codes for light-on-dark and
> > > dark-on-light frame buffer formats, which may be useful for e.g. the
> > > ssd130x and repaper drivers.
> >
> > Applied all patches to drm-misc (drm-misc-next), including the last two
> > RFC patches as we then have the formats ready when a user pops up.
>
> I know it's v3 already, but give people at least a workday for reviewing
> before merging patches of this size and impact. Friday-evening patches are
> not supposed to be merged on Saturday afternoons.
Sorry for being too enthusiastic on this one.
Will wait a bit more in the future for these kind of patches.
Sam
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