[0/5] Handle BPC for HDMI2.1 PCON without DSC1.2 sink and other fixes

Message

Nautiyal, Ankit K Aug. 22, 2022, 10:54 a.m. UTC

This series fixes issues faced when HDMI2.1 sink connected via HDMI2.1
PCON does not support DSC, and other minor HDMI2.1 PCON
fixes/refactoring.

Patch 1 Adds helper to check HDMI2.1 DSC1.2
Patch 2 resets 'frl trained' flag before restarting FRL training.
Patch 3 Pulls the decision making to use DFP conversion capabilities
for every mode during compute config, instead of having that decision
during DP initializing phase.
Patch 4-5 calculate the max BPC that can be sufficient with either
RGB or YCbcr420 format for the maximum FRL rate supported.

Ankit Nautiyal (5):
  drm/i915/dp: Add helper to check DSC1.2 for HDMI2.1 DFP
  drm/i915/dp: Reset frl trained flag before restarting FRL training
  drm/i915/dp: Fix DFP RGB->YCBCR conversion
  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/display/intel_display_types.h    |   7 +
 drivers/gpu/drm/i915/display/intel_dp.c       | 245 ++++++++++++++----
 2 files changed, 200 insertions(+), 52 deletions(-)