[PATCH 00/27] Add DSC fractional bpp support

[Ankit Nautiyal]

This patch series adds support for DSC fractional compressed bpp
for MTL+. The series starts with some fixes, followed by patches that
lay groundwork to iterate over valid compressed bpps to select the
'best' compressed bpp with optimal link configuration (taken from
upstream series: https://patchwork.freedesktop.org/series/105200/).

The later patches, add changes to accommodate compressed bpp with
fractional part, including changes to QP calculations.
To get the 'best' compressed bpp, we iterate over the valid compressed
bpp values, but with fractional step size 1/16, 1/8, 1/4 or 1/2 as per
sink support.

The last 2 patches add support to depict DSC sink's fractional support,
and debugfs to enforce use of fractional bpp, while choosing an
appropriate compressed bpp.

Ankit Nautiyal (23):
  drm/i915/dp: Fix FRL BW check for HDMI2.1 DFP
  drm/i915/dp: Add a wrapper to check frl/tmds downstream constraints
  drm/i915/dp: Consider output_format while computing dsc bpp
  drm/i915/dp: Move compressed bpp check with 420 format inside the
    helper
  drm/i915/dp_mst: Use output_format to get the final link bpp
  drm/i915/dp: Use consistent name for link bpp and compressed bpp
  drm/i915/dp: Update Bigjoiner interface bits for computing compressed
    bpp
  drm/i915/display: Account for DSC not split case while computing cdclk
  drm/i915/intel_cdclk: Add vdsc with bigjoiner constraints on min_cdlck
  drm/i915/dp: Remove extra logs for printing DSC info
  drm/display/dp: Fix the DP DSC Receiver cap size
  drm/i915/dp: Avoid forcing DSC BPC for MST case
  drm/i915/dp: Add functions to get min/max src input bpc with DSC
  drm/i915/dp: Check min bpc DSC limits for dsc_force_bpc also
  drm/i915/dp: Avoid left shift of DSC output bpp by 4
  drm/i915/dp: Rename helper to get DSC max pipe_bpp
  drm/i915/dp: Separate out functions for edp/DP for computing DSC bpp
  drm/i915/dp: Get optimal link config to have best compressed bpp
  drm/i915/display: Store compressed bpp in U6.4 format
  drm/i915/display: Consider fractional vdsc bpp while computing m_n
    values
  drm/i915/audio : Consider fractional vdsc bpp while computing tu_data
  drm/display/dp: Add helper function to get DSC bpp prescision
  drm/i915/dp: Iterate over output bpp with fractional step size

Stanislav Lisovskiy (1):
  drm/i915: Query compressed bpp properly using correct DPCD and DP Spec
    info

Swati Sharma (2):
  drm/i915/dsc: Add debugfs entry to validate DSC fractional bpp
  drm/i915/dsc: Allow DSC only with fractional bpp when forced from
    debugfs

Vandita Kulkarni (1):
  drm/i915/dsc/mtl: Add support for fractional bpp

 drivers/gpu/drm/display/drm_dp_helper.c       |  27 +
 drivers/gpu/drm/i915/display/icl_dsi.c        |  10 +-
 drivers/gpu/drm/i915/display/intel_audio.c    |  14 +-
 drivers/gpu/drm/i915/display/intel_bios.c     |   2 +-
 drivers/gpu/drm/i915/display/intel_cdclk.c    |  54 +-
 drivers/gpu/drm/i915/display/intel_display.c  |   6 +-
 drivers/gpu/drm/i915/display/intel_display.h  |   2 +-
 .../drm/i915/display/intel_display_debugfs.c  |  84 +++
 .../drm/i915/display/intel_display_types.h    |  17 +-
 drivers/gpu/drm/i915/display/intel_dp.c       | 601 +++++++++++++-----
 drivers/gpu/drm/i915/display/intel_dp.h       |  20 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |  82 +--
 drivers/gpu/drm/i915/display/intel_fdi.c      |   2 +-
 .../gpu/drm/i915/display/intel_qp_tables.c    |   3 -
 drivers/gpu/drm/i915/display/intel_vdsc.c     |  29 +-
 drivers/gpu/drm/i915/display/intel_vdsc.h     |   2 +
 .../drm/i915/display/skl_universal_plane.c    |   4 +-
 include/drm/display/drm_dp.h                  |   2 +-
 include/drm/display/drm_dp_helper.h           |   1 +
 19 files changed, 731 insertions(+), 231 deletions(-)

-- 
2.40.1