[PATCH v4 00/11] drm: Add support for bus-format negotiation

[Laurent Pinchart]

Hi Boris,

On Wed, Dec 04, 2019 at 10:09:57AM +0100, Boris Brezillon wrote:
> On Tue, 3 Dec 2019 20:19:24 +0200 Laurent Pinchart wrote:
> > On Tue, Dec 03, 2019 at 03:15:04PM +0100, Boris Brezillon wrote:
> > > This patch series aims at adding support for runtime bus-format
> > > negotiation between all elements of the
> > > 'encoder -> bridges -> connector/display' section of the pipeline.
> > > 
> > > In order to support that, we need drm bridges to fully take part in the
> > > atomic state validation process, which requires adding a
> > > drm_bridge_state and a new drm_bridge_funcs.atomic_check() hook.
> > > Once those basic building blocks are in place, we can add new hooks to
> > > allow bus format negotiation (those are called just before  
> > > ->atomic_check()). The bus format selection is done at runtime by  
> > > testing all possible combinations across the whole bridge chain until
> > > one is reported to work.
> > > 
> > > No Major changes in this v4. I think I addressed all comments I got
> > > from Neil and Laurent (thanks for the detailed reviews BTW). Note that
> > > this version only contains core changes. Once those changes are merged
> > > I'll send the imx/panel/lvds-codec specific bits.  
> > 
> > I think it would make sense to fast-track patches 01 to 07 (a bit
> > selfishly as I would have a need for them in omapdrm :-))
> 
> Will do that end of this week.

Thank you.

> >, but starting
> > from 08 I wonder if it wouldn't make more sense to merge them with the
> > imx/panel/lvds-codec bits to have a user.
> 
> I'd really like to see that happen early in this release cycle so we
> can catch bugs before those commits reach Linus' tree,

I have no issue merging all your patches early in the release cycle,
including the imx/panel/lvds-codec bits. Given the rebase required for
lvds-codec it may take a bit of time though, so I'm OK if you prefer
merging the core first, but I'm not sure it will help catching bugs if
it's unused :-)

> and the
> lvds-codec changes depend on your PR. Can we make sure this one is
> merged just after the MW has closed and the drm-next -> drm-misc-next
> back merge done just after that?

I've sent the pull request already, as soon as Dave or Daniel handles
it, you'll have the necessary dependencies.

-- 
Regards,

Laurent Pinchart