Merge tag 'drm-fixes-2021-12-31' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "This is a bit bigger than I'd like, however it has two weeks of amdgpu
  fixes in it, since they missed last week, which was very small.

  The nouveau regression is probably the biggest fix in here, and it
  needs to go into 5.15 as well, two i915 fixes, and then a scattering
  of amdgpu fixes. The biggest fix in there is for a fencing NULL
  pointer dereference, the rest are pretty minor.

  For the misc team, I've pulled the two misc fixes manually since I'm
  not sure what is happening at this time of year!

  The amdgpu maintainers have the outstanding runpm regression to fix
  still, they are just working through the last bits of it now.

  Summary:

  nouveau:
   - fencing regression fix

  i915:
   - Fix possible uninitialized variable
   - Fix composite fence seqno icrement on each fence creation

  amdgpu:
   - Fencing fix
   - XGMI fix
   - VCN regression fix
   - IP discovery regression fixes
   - Fix runpm documentation
   - Suspend/resume fixes
   - Yellow Carp display fixes
   - MCLK power management fix
   - dma-buf fix"

* tag 'drm-fixes-2021-12-31' of git://anongit.freedesktop.org/drm/drm:
  drm/amd/display: Changed pipe split policy to allow for multi-display pipe split
  drm/amd/display: Fix USB4 null pointer dereference in update_psp_stream_config
  drm/amd/display: Set optimize_pwr_state for DCN31
  drm/amd/display: Send s0i2_rdy in stream_count == 0 optimization
  drm/amd/display: Added power down for DCN10
  drm/amd/display: fix B0 TMDS deepcolor no dislay issue
  drm/amdgpu: no DC support for headless chips
  drm/amdgpu: put SMU into proper state on runpm suspending for BOCO capable platform
  drm/amdgpu: always reset the asic in suspend (v2)
  drm/amd/pm: skip setting gfx cgpg in the s0ix suspend-resume
  drm/i915: Increment composite fence seqno
  drm/i915: Fix possible uninitialized variable in parallel extension
  drm/amdgpu: fix runpm documentation
  drm/nouveau: wait for the exclusive fence after the shared ones v2
  drm/amdgpu: add support for IP discovery gc_info table v2
  drm/amdgpu: When the VCN(1.0) block is suspended, powergating is explicitly enabled
  drm/amd/pm: Fix xgmi link control on aldebaran
  drm/amdgpu: introduce new amdgpu_fence object to indicate the job embedded fence
  drm/amdgpu: fix dropped backing store handling in amdgpu_dma_buf_move_notify