The series depicts a working skeleton of the fallback sequence in case on DP link training failure. The fallback is currently implemented for DP2.0 only, on similar basis DP1.4 fallback will come up in the same patch series. A hotplug event was trigerred in the existing fallback sequence. This has been removed. On fallback only the link rate and the lane count is changed for which user need not be notified. As part of the fallback, the link rate and lane count has to be changed and these parameters are in intel_crtc_state struct which is passed as const. The same variables link_rate and lane_count is available in intel_dp structure. It would be more meaningful to use these for the dp link training and fallback as well. As part of cleanup the lane_count in intel_crtc_state structure has to be removed and the port_clock will have to be used only in crtc configuration. These changes will be included in this patch series. Arun R Murthy (4): drm/i915/display/dp: Add DP fallback on LT drm/i915/display/dp: Dont send hotplug event on LT failure drm/i915/dp: use link rate and lane count in intel_dp struct drm/i915/display/dp: On LT failure retry LT drivers/gpu/drm/i915/display/intel_cx0_phy.c | 16 +-- drivers/gpu/drm/i915/display/intel_ddi.c | 31 ++++-- .../drm/i915/display/intel_ddi_buf_trans.c | 7 +- drivers/gpu/drm/i915/display/intel_dp.c | 100 +++++++++++++++--- drivers/gpu/drm/i915/display/intel_dp.h | 2 +- .../drm/i915/display/intel_dp_link_training.c | 86 +++++++-------- .../drm/i915/display/intel_dp_link_training.h | 2 +- drivers/gpu/drm/i915/display/intel_dp_mst.c | 29 ++--- 8 files changed, 184 insertions(+), 89 deletions(-) -- 2.25.1
