[Intel-gfx] [PATCH v4 DDX] sna/video sprite patch: support for multiple xv ports

[Chris Wilson]

On Thu, Mar 31, 2016 at 02:08:03PM +0100, Michael Hadley wrote:
> The current driver exposes only a single adaptor port so that only one
> xv video can be played on sprite at a time. This change will allow
> available hardware sprites to be used.

It's a bad change in semantics as you no longer guarrantee that you give
the client the overlay plane they requested with the same set of
compatible attributes.

This code will not compile on older Xorg, and you have also randomly
broken other features not related to Xv.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre