[Intel-gfx] [PATCH v2 00/16] Pre-calculate SKL-style atomic watermarks

[Matt Roper]

See previous cover letter for detailed explanation of series:
  https://lists.freedesktop.org/archives/intel-gfx/2016-April/091293.html

Key changes since the last spin (mostly based on Maarten's feedback):
 - During DDB/WM calculation, avoid grabbing extra plane_state's for the
   planes that aren't being modified by the transaction.  We do this by caching
   data rates and minimum block sizes in the crtc_state so that they can be
   re-used for subsequent transactions if the pipe's DDB size isn't changing.
 - Only use ->active_crtcs when we're sure we're not racing with
   anything that could update it.
 - Drop the pstate_for_cstate_plane() helper and describe more clearly in
   comments how/why the code may need to change in the future if we start
   supporting multiple pending commits.


Matt Roper (16):
  drm/i915: Reorganize WM structs/unions in CRTC state
  drm/i915: Rename s/skl_compute_pipe_wm/skl_build_pipe_wm/
  drm/i915/gen9: Cache plane data rates in CRTC state
  drm/i915/gen9: Allow calculation of data rate for in-flight state (v2)
  drm/i915/gen9: Store plane minimum blocks in CRTC wm state
  drm/i915: Track whether an atomic transaction changes the active
    CRTC's
  drm/i915/gen9: Allow skl_allocate_pipe_ddb() to operate on in-flight
    state (v2)
  drm/i915/gen9: Compute DDB allocation at atomic check time (v2)
  drm/i915/gen9: Drop re-allocation of DDB at atomic commit (v2)
  drm/i915/gen9: Calculate plane WM's from state
  drm/i915/gen9: Allow watermark calculation on in-flight atomic state
    (v2)
  drm/i915/gen9: Use a bitmask to track dirty pipe watermarks
  drm/i915/gen9: Propagate watermark calculation failures up the call
    chain
  drm/i915/gen9: Calculate watermarks during atomic 'check'
  drm/i915/gen9: Reject display updates that exceed wm limitations
  drm/i915: Remove wm_config from dev_priv/intel_atomic_state

 drivers/gpu/drm/i915/i915_drv.h      |  16 +-
 drivers/gpu/drm/i915/intel_display.c |  44 +--
 drivers/gpu/drm/i915/intel_drv.h     |  83 +++--
 drivers/gpu/drm/i915/intel_pm.c      | 573 ++++++++++++++++++++++-------------
 4 files changed, 446 insertions(+), 270 deletions(-)

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2.1.4