[Intel-gfx] [PATCH 00/14] drm/i915: Program SKL+ watermarks/ddb more carefully

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

First a bunch of cleanups and reordering of the plane register
update sequence to make it potentially more atomic, then we
move the SKL+ plane wm/ddb programming into the plane
update/disable hooks, and finally we change the order in which
the planes gets updated to avoid accidental ddb overlaps in
case a vblank sneaks in while we're reprogramming the planes
(as that could even cause a system hang). There are a few
updates to the watermark code as well that started to bug me
while doing this.

Entire thing available here:
git://github.com/vsyrjala/linux.git skl_plane_ddb_wm_update

Ville Syrjälä (14):
  drm/i915: Nuke posting reads from plane update/disable funcs
  drm/i915: Clean up skl_program_scaler()
  drm/i915: Remove the PS_PWR_GATE write from skl_program_scaler()
  drm/i915: Polish the skl+ plane keyval/msk/max register setup
  drm/i915: Clean up skl+ PLANE_POS vs. scaler handling
  drm/i915: Reorganize plane register writes to make them more atomic
  drm/i915: Move single buffered plane register writes to the end
  drm/i915: Generalize skl_ddb_allocation_overlaps()
  drm/i915: Introduce crtc_state->update_planes bitmask
  drm/i915: Pass the new crtc_state to ->disable_plane()
  drm/i915: Fix latency==0 handling for level 0 watermark on skl+
  drm/i915: Remove some useless zeroing on skl+ wm calculations
  drm/i915: Move ddb/wm programming into plane update/disable hooks on
    skl+
  drm/i915: Commit skl+ planes in an order that avoids ddb overlaps

 drivers/gpu/drm/i915/i915_debugfs.c       |  21 +-
 drivers/gpu/drm/i915/i915_drv.h           |   3 -
 drivers/gpu/drm/i915/i915_reg.h           |   2 +-
 drivers/gpu/drm/i915/intel_atomic.c       |   1 +
 drivers/gpu/drm/i915/intel_atomic_plane.c | 102 ++++-
 drivers/gpu/drm/i915/intel_display.c      | 125 +++---
 drivers/gpu/drm/i915/intel_display.h      |  19 +-
 drivers/gpu/drm/i915/intel_drv.h          |  29 +-
 drivers/gpu/drm/i915/intel_pm.c           | 483 ++++++++++------------
 drivers/gpu/drm/i915/intel_sprite.c       | 185 +++++----
 10 files changed, 518 insertions(+), 452 deletions(-)

-- 
2.18.1