[Intel-gfx] [PATCH 00/13] drm/i915: Clean up the plane data_rate stuff

[Ville Syrjala]

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

Let's sort out the plane data_rate stuff properly by
accounting each color plane independently. And we reuse the same
code and approach for the relative data rate (which is used for
plane ddb allocation).

Currently it's not even obvious if the relative data rate is
really correct in all the cases. The normal data rate stuff
is much more obvious with the way it's getting computed ahead
of time. Also reusing the same code for both means we at least
have just the one set of bugs to fix.

I was also pondering potentially replacing the relative data
rate entirely with the real data rate, but it's not obvious
what effect that would have to the watermarks. Smaller
planes would certainly get a bigger proportion of ddb allocated
to them, which might result in worse power consumption I guess.
But at least with data_rate and rel_data_rate being handled 
almost identically we could easily change the strategy at
any time.

Ville Syrjälä (13):
  drm/i915: Drop pointless total_data_rate argument
  drm/i915: Drop pointless dev_priv argument
  drm/i915: Extract skl_ddb_entry_init()
  drm/i915: Introduce skl_plane_ddb_iter
  drm/i915: Extract skl_allocate_plane_ddb()
  drm/i915: Extract skl_crtc_calc_dbuf_bw()
  drm/i915: Tweak plane ddb allocation tracking
  drm/i915: Split plane data_rate into data_rate+data_rate_y
  drm/i915: Extract intel_adjusted_rate()
  drm/i915: Reuse intel_adjusted_rate() for pfit pixel rate adjustment
  drm/i915: Pre-calculate plane relative data rate
  drm/i915: Remove total[] and uv_total[] from ddb allocation
  drm/i915: s/plane_res_b/blocks/ etc.

 .../gpu/drm/i915/display/intel_atomic_plane.c | 122 ++--
 .../gpu/drm/i915/display/intel_atomic_plane.h |   8 +-
 drivers/gpu/drm/i915/display/intel_bw.c       |  81 +--
 drivers/gpu/drm/i915/display/intel_display.c  |  93 ++-
 .../drm/i915/display/intel_display_debugfs.c  |   4 +-
 .../drm/i915/display/intel_display_types.h    |  22 +-
 drivers/gpu/drm/i915/intel_pm.c               | 629 +++++++-----------
 7 files changed, 421 insertions(+), 538 deletions(-)

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2.26.2