With the nitpicks addressed (note there were a couple of other spots where we wanted to use Return: in the kdocs, but I didn't bother pointing all of them out), all but patch 07 is:
Reviewed-by: Lyude Paul lyude@redhat.com
On Fri, 2020-09-04 at 14:53 +0300, Ville Syrjala wrote:
From: Ville Syrjälä ville.syrjala@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(-)