linux-kernel - Re: [PATCH] drm/udl: Add ARGB8888 as a format

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Date: Tue, 5 Mar 2024 08:41:30 -0800
From: Doug Anderson <dianders@...omium.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: dri-devel@...ts.freedesktop.org, Rob Clark <robdclark@...omium.org>, 
	Javier Martinez Canillas <javierm@...hat.com>, Daniel Vetter <daniel@...ll.ch>, Dave Airlie <airlied@...hat.com>, 
	David Airlie <airlied@...il.com>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
	Maxime Ripard <mripard@...nel.org>, Maíra Canal <mcanal@...lia.com>, 
	Sean Paul <sean@...rly.run>, Thomas Zimmermann <tzimmermann@...e.de>, 
	Ville Syrjälä <ville.syrjala@...ux.intel.com>, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/udl: Add ARGB8888 as a format

Hi,

On Tue, Feb 27, 2024 at 3:26 PM Dmitry Baryshkov
<dmitry.baryshkov@...aro.org> wrote:
>
> On Wed, 28 Feb 2024 at 00:19, Douglas Anderson <dianders@...omium.org> wrote:
> >
> > Even though the UDL driver converts to RGB565 internally (see
> > pixel32_to_be16() in udl_transfer.c), it advertises XRGB8888 for
> > compatibility. Let's add ARGB8888 to that list.
> >
> > This makes UDL devices work on ChromeOS again after commit
> > c91acda3a380 ("drm/gem: Check for valid formats"). Prior to that
> > commit things were "working" because we'd silently treat the ARGB8888
> > that ChromeOS wanted as XRGB8888.
> >
> > Fixes: c91acda3a380 ("drm/gem: Check for valid formats")
> > Signed-off-by: Douglas Anderson <dianders@...omium.org>
> > ---
> >
> >  drivers/gpu/drm/udl/udl_modeset.c | 1 +
> >  1 file changed, 1 insertion(+)
>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

It's been ~a week, the fix is trivial, and according to MAINTAINERS
this driver goes through drm-misc. ...so I've applied this with
Dmitry's tag (thanks!) to drm-misc-fixes.

95bf25bb9ed5 drm/udl: Add ARGB8888 as a format

-Doug