[Intel-gfx] [PATCH 0/6] Introduce DP MST Topology state

[Dhinakaran Pandiyan]

Link bandwidth is shared between multiple display streams in DP MST
configurations. The DP MST topology manager structure maintains the shared
link bandwidth for a primary link directly connected to the GPU. For atomic
modesetting drivers, checking if there is sufficient link bandwidth for a
mode needs to be done during the atomic_check phase to avoid failed
modesets.

Using the new helpers is optional and the changes should not affect
drivers that don't support atomic modesetting.

Patches 1-3/6 include cleanups and refactoring.
Patch 4/6 adds the MST topology state, 5/6 adds helpers to alter the state
and 6/6 contains i915 changes to use the helpers .

Dhinakaran Pandiyan (6):
  drm/dp: Store drm_device in MST topology manager
  drm/dp: Kill unused MST vcpi slot availability tracking
  drm/dp: Split drm_dp_mst_allocate_vcpi
  drm/dp: Introduce DP MST topology manager state to track DP link bw
  drm/dp: Add DP MST helpers to atomically find and release vcpi slots
  drm/i915/dp: Track available DP MST vcpi time slots

 drivers/gpu/drm/drm_atomic.c           | 66 +++++++++++++++++++++++++
 drivers/gpu/drm/drm_atomic_helper.c    | 10 ++++
 drivers/gpu/drm/drm_dp_mst_topology.c  | 89 ++++++++++++++++++++++++++--------
 drivers/gpu/drm/i915/intel_display.c   | 39 ++++++++++++++-
 drivers/gpu/drm/i915/intel_dp_mst.c    | 42 ++++++++++++++--
 drivers/gpu/drm/i915/intel_drv.h       |  3 ++
 drivers/gpu/drm/nouveau/nv50_display.c |  5 +-
 drivers/gpu/drm/radeon/radeon_dp_mst.c |  5 +-
 include/drm/drm_atomic.h               | 11 +++++
 include/drm/drm_dp_mst_helper.h        | 35 ++++++++-----
 10 files changed, 263 insertions(+), 42 deletions(-)

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2.7.4