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

Boris Brezillon boris.brezillon at collabora.com
Mon Dec 9 09:43:28 UTC 2019


On Tue, 3 Dec 2019 20:19:24 +0200
Laurent Pinchart <laurent.pinchart at ideasonboard.com> wrote:

> Hi Boris,
> 
> 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 :-)),

I just queued patches 1 to 7 to drm-misc-next.


More information about the dri-devel mailing list