[Intel-gfx] [PATCH v2 00/12] drm/i915/tc: Add a workaround for an IOM/TCSS firmware hang issue

[Imre Deak]

This is v2 of [1] addressing the review comments from Ville. It also
includes a few fixes I noticed during further testing, and a workaround
for the firmware blocking the HPD state update of an active/disconnected
port (stuck in the connected state) until another active/disconnected
port gets disabled (added in the last patch).

Tested on regular and port-sync configs (on ICL/TGL/ADLP) and on
bigjoiner/port-sync+bigjoiner configs (on ADLP).

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

[1] https://lore.kernel.org/all/20230426165305.2049341-1-imre.deak@intel.com/

Imre Deak (12):
  drm/i915: Fix PIPEDMC disabling for a bigjoiner configuration
  drm/i915: Make the CRTC state consistent during sanitize-disabling
  drm/i915: Update connector atomic state before crtc sanitize-disabling
  drm/i915: Separate intel_crtc_disable_noatomic_begin/complete()
  drm/i915: Factor out set_encoder_for_connector()
  drm/i915: Add support for disabling any CRTCs during HW
    readout/sanitization
  drm/i915/dp: Add link training debug and error printing helpers
  drm/i915/dp: Convert link training error to debug message on
    disconnected sink
  drm/i915/dp: Prevent link training fallback on disconnected port
  drm/i915/dp: Factor out intel_dp_get_active_pipes()
  drm/i915: Factor out a helper for handling atomic modeset locks/state
  drm/i915/tc: Reset TypeC PHYs left enabled in DP-alt mode after the
    sink disconnects

 drivers/gpu/drm/i915/Makefile                 |   1 +
 drivers/gpu/drm/i915/display/intel_ddi.c      |  77 +++-
 drivers/gpu/drm/i915/display/intel_display.c  |  14 +-
 drivers/gpu/drm/i915/display/intel_display.h  |   1 +
 .../drm/i915/display/intel_display_types.h    |   2 +
 drivers/gpu/drm/i915/display/intel_dp.c       |  81 +++-
 drivers/gpu/drm/i915/display/intel_dp.h       |   3 +
 .../drm/i915/display/intel_dp_link_training.c | 399 +++++++-----------
 .../gpu/drm/i915/display/intel_modeset_lock.c |  50 +++
 .../gpu/drm/i915/display/intel_modeset_lock.h |  33 ++
 .../drm/i915/display/intel_modeset_setup.c    | 316 +++++++++++---
 drivers/gpu/drm/i915/display/intel_tc.c       |  29 ++
 drivers/gpu/drm/i915/display/intel_tc.h       |   1 +
 13 files changed, 676 insertions(+), 331 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/display/intel_modeset_lock.c
 create mode 100644 drivers/gpu/drm/i915/display/intel_modeset_lock.h

-- 
2.37.2