[v9,00/14] Handle BPC for HDMI2.1 PCON without DSC1.2 sink and other fixes

Message

Nautiyal, Ankit K Feb. 20, 2023, 12:23 p.m. UTC

This series fixes issues faced when an HDMI2.1 sink that does not
support DSC is connected via HDMI2.1PCON. It also includes other minor
HDMI2.1 PCON fixes/refactoring.

Patch 1-2 Have minor fixes/cleanups.
Patch 3-6 Pull the decision making to use DFP conversion capabilities
for every mode during compute config, instead of having that decision
during DP initializing phase.
Patch 7-8 Calculate the max BPC that can be sufficient with either
RGB or YCbcr420 format for the maximum FRL rate supported.

Rev2: Split the refactoring of DFP RG->YCBCR conversion into smaller
patches, as suggested by Jani N.
Also dropped the unnecessary helper for DSC1.2 support for HDMI2.1 DFP.

Rev3: As suggested by Ville, added new member sink_format to store the
final format that the sink will be using, which might be different
than the output format, and thus might need color/format conversion
performed by the PCON.

Rev4: Fix typo in switch case as, reported by kernel test bot.

Rev5: Corrected order of setting sink_format and output_format. (Ville)
Avoided the flag ycbcr420_output and used the sink_format to facilitate
4:2:2 support at a later stage. (Ville)

Rev6: Added missing changes for sdvo. (Ville)
Added check for scaler and DSC constraints with YCbCr420.

Rev7: Split change to add scaler constraint in separate patch, and rebased.

Rev8: Rebased. Fixed check for mode rate with dsc in modevalid.
Fixed scaler constraint as per display version.

Rev9: Rebased.

Ankit Nautiyal (14):
  drm/i915/display: Add new member to configure PCON color conversion
  drm/i915/display: Add new member in intel_dp to store ycbcr420
    passthrough cap
  drm/i915/dp: Add Scaler constraint for YCbCr420 output
  drm/i915/dp: Replace intel_dp.dfp members with the new crtc_state
    sink_format
  drm/i915/dp: Compute output format with/without DSC
  drm/i915/display: Use sink_format instead of ycbcr420_output flag
  drm/i915/dp: Rearrange check for illegal mode and comments in
    mode_valid
  drm/i915/dp: Consider output_format while computing dsc bpp for
    mode_valid
  drm/i915/dp: Check if mode can be supported with dsc compressed bpp
  drm/i915/display: Add helper function to check if sink_format is 420
  drm/i915/dp: Avoid DSC with output_format YCBCR420
  drm/i915/dp: Handle BPP where HDMI2.1 DFP doesn't support DSC
  drm/i915/dp: Fix FRL BW check for HDMI2.1 DFP
  drm/i915/dp: Add a wrapper to check frl/tmds downstream constraints

 drivers/gpu/drm/i915/display/icl_dsi.c        |   1 +
 drivers/gpu/drm/i915/display/intel_crt.c      |   1 +
 .../drm/i915/display/intel_crtc_state_dump.c  |   5 +-
 drivers/gpu/drm/i915/display/intel_display.c  |   5 +
 .../drm/i915/display/intel_display_types.h    |  18 +-
 drivers/gpu/drm/i915/display/intel_dp.c       | 535 +++++++++++++-----
 drivers/gpu/drm/i915/display/intel_dp.h       |   4 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |   3 +-
 drivers/gpu/drm/i915/display/intel_dvo.c      |   1 +
 drivers/gpu/drm/i915/display/intel_hdmi.c     |  74 +--
 drivers/gpu/drm/i915/display/intel_hdmi.h     |   5 +-
 drivers/gpu/drm/i915/display/intel_lvds.c     |   1 +
 drivers/gpu/drm/i915/display/intel_sdvo.c     |   1 +
 drivers/gpu/drm/i915/display/intel_tv.c       |   1 +
 drivers/gpu/drm/i915/display/vlv_dsi.c        |   1 +
 15 files changed, 475 insertions(+), 181 deletions(-)