[Intel-gfx] [PATCH v2 00/18] drm/i915: Pimp DP DFP handling

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Attempt to deal with DP downstream facing ports (DFP) more
thoroughly. This involves reading more of the port caps
and dealing with various clock/bpc limitations.

And we try to enable YCbCr 444->420 conversion for HDMI DFPs
which could allow some 4k displays to actually use 4k on
pre-icl hardware (which doesn't have native 420 output),
assuming we don't run into some other hardware limits.

I dropped my earlier patches to also hook in the DP dual mode
adapter probing since sadly I've not actually seen a DP->DP++
dongle that passes through the i2c traffic for those.

Only pimped the SST side of things. Not sure what would
be required to get it all working for MST.

Ville Syrjälä (18):
  drm/dp: Dump downstream facing port caps
  drm/i915/lspcon: Do not send infoframes to non-HDMI sinks
  drm/dp: Define protocol converter DPCD registers
  drm/dp: Define more downstream facing port caps
  drm/i915: Reworkd DFP max bpc handling
  drm/dp: Add helpers to identify downstream facing port types
  drm/dp: Pimp drm_dp_downstream_max_bpc()
  drm/dp: Redo drm_dp_downstream_max_clock() as
    drm_dp_downstream_max_dotclock()
  drm/i915: Reworkd DP DFP clock handling
  drm/dp: Add drm_dp_downstream_{min,max}_tmds_clock()
  drm/i915: Deal with TMDS DFP clock limits
  drm/i915: Configure DP 1.3+ protocol converted HDMI mode
  drm/dp: Add drm_dp_downstream_mode()
  drm/i915: Handle downstream facing ports w/o EDID
  drm/i915: Extract intel_hdmi_has_audio()
  drm/i915: DP->HDMI TMDS clock limits vs. deep color
  drm/dp: Add helpers for DFP YCbCr 4:2:0 handling
  drm/i915: Do YCbCr 444->420 conversion via DP protocol converters

 drivers/gpu/drm/drm_dp_helper.c               | 382 +++++++++++++++---
 drivers/gpu/drm/drm_edid.c                    |  19 +
 drivers/gpu/drm/i915/display/intel_ddi.c      |  11 +-
 .../drm/i915/display/intel_display_debugfs.c  |   3 +-
 .../drm/i915/display/intel_display_types.h    |   9 +
 drivers/gpu/drm/i915/display/intel_dp.c       | 304 +++++++++++---
 drivers/gpu/drm/i915/display/intel_dp.h       |   1 +
 drivers/gpu/drm/i915/display/intel_hdmi.c     |  82 ++--
 drivers/gpu/drm/i915/display/intel_hdmi.h     |   2 +
 include/drm/drm_dp_helper.h                   |  63 ++-
 include/drm/drm_edid.h                        |   4 +
 11 files changed, 738 insertions(+), 142 deletions(-)

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2.26.2