[Intel-gfx] [PATCH 0/6] Fix legacy DPMS changes with MST

[Lyude Paul]

There's two major things this patchset does:
 - Add drm_dp_mst_connector_atomic_check() so drivers don't need to use
   ->best_encoder() to prevent modesets on zombie MST connectors. We'll
   use this later for implementing MST fallback retraining as well.
 - Fix DPMS on->off changes failing with legacy modesetting users after
   an MST connector's topology has disappeared, which resulted in CRTCs
   being left on when they shouldn't have been

Lyude Paul (6):
  drm/dp_mst: Introduce drm_dp_mst_connector_atomic_check()
  drm/nouveau: Unbreak nv50_mstc->best_encoder()
  drm/i915: Leave intel_conn->mst_port set, use mst_port_gone instead
  drm/i915: Skip vcpi allocation for MSTB ports that are gone
  drm/i915: Fix intel_dp_mst_best_encoder()
  drm/amdgpu/dm/mst: Use drm_dp_mst_connector_atomic_check()

 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   | 12 +++
 drivers/gpu/drm/drm_dp_mst_topology.c         | 76 +++++++++++++++++++
 drivers/gpu/drm/i915/intel_dp_mst.c           | 46 ++++++-----
 drivers/gpu/drm/i915/intel_drv.h              |  1 +
 drivers/gpu/drm/nouveau/dispnv50/disp.c       | 25 +++---
 include/drm/drm_dp_mst_helper.h               |  3 +
 6 files changed, 132 insertions(+), 31 deletions(-)

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2.17.1