This series takes another step along the path to atomic modeset / nuclear pageflip by transitioning the i915 driver to the new atomic plane helpers provided by Daniel Vetter in:
http://lists.freedesktop.org/archives/dri-devel/2014-November/071623.html
Previous work by Gustavo Padovan had already split most of the i915 plane internals into separate prepare/check/commit steps, so a lot of the heavy lifting was already done. This patch series sets up the hooks expected by the atomic plane helpers, replaces the existing .update_plane() and .disable_plane() entrypoints with the helpers, and does some general cleanup. Patches #5 and #6 are the meat here; the other five patches are minor refactoring and cleanup work.
I've tested this series on IVB with the plane-related i-g-t tests and some very casual X usage.
Matt Roper (7): drm/i915: Make intel_plane_state subclass drm_plane_state drm/i915: Allow intel_plane_disable() to operate on all plane types drm/i915: Clarify sprite plane function names drm/i915: Make intel_crtc_has_pending_flip() non-static drm/i915: Prepare for atomic plane helpers drm/i915: Switch plane handling to atomic helpers drm/i915: Drop unused position fields
drivers/gpu/drm/i915/Makefile | 1 + drivers/gpu/drm/i915/intel_atomic.c | 217 ++++++++++++++++++++++ drivers/gpu/drm/i915/intel_display.c | 344 +++++++++-------------------------- drivers/gpu/drm/i915/intel_drv.h | 28 ++- drivers/gpu/drm/i915/intel_sprite.c | 170 +++-------------- 5 files changed, 351 insertions(+), 409 deletions(-) create mode 100644 drivers/gpu/drm/i915/intel_atomic.c