[PATCH RESEND v13 0/5] Expose modifiers/formats supported by async flips

[Alex Deucher]

+ Harry and Leo

On Wed, Apr 16, 2025 at 2:33 AM Borah, Chaitanya Kumar
<chaitanya.kumar.borah at intel.com> wrote:
>
> Hello Alexander,
>
> > -----Original Message-----
> > From: Murthy, Arun R <arun.r.murthy at intel.com>
> > Sent: Monday, April 7, 2025 11:14 AM
> > To: dri-devel at lists.freedesktop.org; intel-gfx at lists.freedesktop.org; intel-
> > xe at lists.freedesktop.org
> > Cc: Jani Nikula <jani.nikula at linux.intel.com>; Borah, Chaitanya Kumar
> > <chaitanya.kumar.borah at intel.com>; Syrjala, Ville <ville.syrjala at intel.com>;
> > Murthy, Arun R <arun.r.murthy at intel.com>; Ville Syrjälä
> > <ville.syrjala at linux.intel.com>; Kumar, Naveen1
> > <naveen1.kumar at intel.com>
> > Subject: [PATCH RESEND v13 0/5] Expose modifiers/formats supported by
> > async flips
> >
> > All of the formats/modifiers supported by the plane during synchronous flips
> > are nor supported by asynchronous flips. The formats/modifiers exposed to
> > user by IN_FORMATS exposes all formats/modifiers supported by plane and
> > this list varies for async flips. If the async flip supported formats/modifiers are
> > exposed to the user, user based on this list can take decision to proceed or
> > not and avoid flip failures during async flips.
> > Discussion around this can be located @
> > https://gitlab.freedesktop.org/mesa/mesa/-
> > /merge_requests/29618#note_2487123
> > Mutter implementation for IN_FORMARTS_ASYNC under review @
> > https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4063
> > Xorg/modesetting patch
> > https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1816
> >
>
> We have added a new drm plane property to expose the format modifier pairs supported by a plane for async flip.
> Can you please let us know if this implementation looks good to you? If so, kindly provide an Ack.
>
> IGT implementation: https://patchwork.freedesktop.org/series/146853/

Seems reasonable to me, but I'm not as involved in the display side
anymore.  I'd defer to Harry and Leo.  @Wentland, Harry, @Leo
(Sunpeng) Li can you take a look?

Thanks,

Alex

>
> Regards
>
> Chaitanya