[PATCH 0/9] Add DSC fractional bpp support

[Ankit Nautiyal]

This patch series adds support for having fractional compressed bpp
for MTL+. The initial patches that lay groundwork to iterate over valid
compressed bpps to select the 'best' compressed bpp with optimal link
configuration is taken from upstream pending series:
https://patchwork.freedesktop.org/series/105200/

The later patches, add changes to accomodate comprssed 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 (6):
  drm/i915/dp: Check if force dsc bpc <= max requested bpc
  drm/display/dp: Add helper function to get DSC bpp prescision
  drm/i915/dp: Rename helpers to get DSC max pipe bpp and max output 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/dp: Iterate over output bpp with fractional step size

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    |   2 +-
 drivers/gpu/drm/i915/display/intel_bios.c     |   2 +-
 drivers/gpu/drm/i915/display/intel_display.c  |   2 +-
 .../drm/i915/display/intel_display_debugfs.c  |  84 ++++++
 .../drm/i915/display/intel_display_types.h    |   3 +-
 drivers/gpu/drm/i915/display/intel_dp.c       | 257 ++++++++++++++----
 .../gpu/drm/i915/display/intel_qp_tables.c    |   3 -
 drivers/gpu/drm/i915/display/intel_vdsc.c     |  16 +-
 include/drm/display/drm_dp_helper.h           |   1 +
 11 files changed, 337 insertions(+), 70 deletions(-)

-- 
2.25.1