Re: Proposal for a low-level Linux display framework

On Thu, 15 Sep 2011 10:50:32 -0500
Keith Packard [off-list ref] wrote:

On Thu, 15 Sep 2011 18:29:54 +0300, Tomi Valkeinen [off-list ref] wrote:

quoted

1) It's part of DRM, so it doesn't help fb or v4l2 drivers. Except if
the plan is to make DRM the core Linux display framework, upon which
everything else is built, and fb and v4l2 are changed to use DRM.

I'd like to think we could make DRM the underlying display framework;
it already exposes an fb interface, and with overlays, a bit more of the
v4l2 stuff is done as well. Certainly eliminating three copies of mode
setting infrastructure would be nice...

V4L2 needs to interface with the DRM anyway. Lots of current hardware
wants things like shared 1080i/p camera buffers with video in order to do
preview on video and the like.

In my semi-perfect world vision fb would be a legacy layer on top of DRM.
DRM would get the silly recovery fail cases fixed, and a kernel console
would be attachable to a GEM object of your choice.

Alan