[Intel-gfx] [PATCH 00/12] drm/i915: Some cleanups and fixes to the sprite code v2

[ville.syrjala at linux.intel.com]

Chris asked for some renames and assertions during v1. While adding those I
noticed that what I did in the original patch 02 didn't match quite so well
with the assertions. So I modified patch 02 a bit, and that caused quite a bit
of bit of rebase issues for most of the other patches, so I figured it's better
to repost the whole thing.

Changes from v1:
- Move the primary disable/enable calls inside intel_crtc->active checks
  in intel_update_plane/intel_disable_plane. That also ate up patch 03 from
  the original series.
- Add primary_disabled WARNs
- Rename primary plane funcs
- Flush primary plane changes from sprite code
- Add a POSTING_READ() to intel_flush_primary_plane. This shouldn't really
  be necessary now that I think about it some more. So we might want to drop
  that change...