[0/4] drm/i915/dp_mst: Fix DDI function/DP2 config programming

Message

Imre Deak Oct. 29, 2024, 7:12 p.m. UTC

Fix/align with the spec the DDI function and DP2 config programming
during enabling/disabling MST slave transcoders. On PTL the first patch
fixes a slave transcoder getting stuck issue. On PTL the DP2
configuration and on other ADLP+ platforms both the DDI function and the
DP2 configuration changes only align the code with the specification,
without actual problems reported that these woud fix.

Imre Deak (4):
  drm/i915/ptl/dp_mst: Fix slave transcoder enabling wrt. DDI function
  drm/i915/dp: Export intel_ddi_config_transcoder_dp2()
  drm/i915/ptl/dp_mst: Align slave transcoder sequences with spec wrt.
    DP2 config
  drm/i915/adlp+: Align slave transcoder sequences with spec wrt. DDI
    function/DP2 config

 drivers/gpu/drm/i915/display/intel_ddi.c    | 17 ++++++++++-------
 drivers/gpu/drm/i915/display/intel_ddi.h    |  5 +++++
 drivers/gpu/drm/i915/display/intel_dp_mst.c |  8 ++++++++
 3 files changed, 23 insertions(+), 7 deletions(-)