Additional code to support more than one display when using MST with TGL. It's still WIP! From what I could check on my tests we are correctly tracking the master transcoder and setting it accordingly on TRANS_DDI_FUNC_CTL and DP_TP_CTL. I tried also setting MST mode on the slave's DP_TP_CTL. I could get the second display to show up some times and we don't get stuck on "timeout waiting for ACT" error message. This is not according to the spec though, and it still doesn't work most of the time. So... I didn't add it here. I guess now I need another pair of eyes to check what I'm doing wrong since continuing to stare at the spec and code isn't helping. José, Imre? José Roberto de Souza (2): drm/i915: Add for_each_new_intel_connector_in_state() drm/i915/tgl: Select master transcoder in DP MST Lucas De Marchi (3): drm/i915: add wrappers to get intel connector state drm/i915/tgl: do not enable transcoder clock twice on MST drm/i915: avoid reading DP_TP_CTL twice drivers/gpu/drm/i915/display/intel_ddi.c | 54 +++--- drivers/gpu/drm/i915/display/intel_display.c | 16 ++ drivers/gpu/drm/i915/display/intel_display.h | 8 + .../drm/i915/display/intel_display_types.h | 21 +++ drivers/gpu/drm/i915/display/intel_dp_mst.c | 159 +++++++++++++++++- drivers/gpu/drm/i915/display/intel_dp_mst.h | 2 + 6 files changed, 236 insertions(+), 24 deletions(-) -- 2.23.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
