[PATCH 00/21] Use VRR timing generator for fixed refresh rate modes

[Ankit Nautiyal]

Even though the VRR timing generator (TG) is primarily used for
variable refresh rates, it can be used for fixed refresh rates as
well. For a fixed refresh rate the Flip Line and Vmax must be equal
(TRANS_VRR_FLIPLINE = TRANS_VRR_VMAX). Beyond that, there are some
dependencies between the VRR timings and the legacy timing generator
registers.

This series is an attempt to use VRR TG for fixed refresh rate.
For platforms XE2LPD+, always go with VRR timing generator for both fixed and
variable refresh rate cases.

Ankit Nautiyal (21):
  drm/i915/vrr: Remove unwanted comment
  drm/i915:vrr: Separate out functions to compute vmin and vmax
  drm/i915/vrr: Make helpers for cmrr and vrr timings
  drm/i915/vrr: Disable CMRR
  drm/i915/vrr: Track vrr.enable only for variable timing
  drm/i915/vrr: Use crtc_vtotal for vmin
  drm/i915/vrr: Prepare for fixed refresh rate timings
  drm/i915/display: Enable MSA Ignore Timing PAR only when in not
    fixed_rr mode
  drm/i915/hdmi: Use VRR Timing generator for HDMI for fixed_rr
  drm/i915/dp_mst: Use VRR Timing generator for DP MST for fixed_rr
  drm/i915/display: Disable PSR before disabling VRR
  drm/i915/display: Move intel_psr_post_plane_update() at the later
  drm/i915/vrr: Refactor condition for computing vmax and LRR
  drm/i915/vrr: Always set vrr vmax/vmin/flipline in
    vrr_{enable/disable}
  drm/i915/display: Use fixed_rr timings in modeset sequence
  drm/i915/vrr: Use fixed timings for platforms that support VRR
  drm/i915/display: Use fixed rr timings in
    intel_set_transcoder_timings_lrr()
  drm/i915/display: Move vrr.guardband/pipeline_full out of !fastset
    block
  drm/i915/vrr: Allow fixed_rr with pipe joiner
  drm/i915/vrr: Always use VRR timing generator for MTL+
  drm/i915/display: Add fixed_rr to crtc_state dump

 .../drm/i915/display/intel_crtc_state_dump.c  |   3 +-
 drivers/gpu/drm/i915/display/intel_ddi.c      |   5 +
 drivers/gpu/drm/i915/display/intel_display.c  |  16 +-
 .../drm/i915/display/intel_dp_link_training.c |  15 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |   7 +
 drivers/gpu/drm/i915/display/intel_hdmi.c     |   3 +
 drivers/gpu/drm/i915/display/intel_vrr.c      | 313 ++++++++++++++----
 drivers/gpu/drm/i915/display/intel_vrr.h      |   6 +
 8 files changed, 293 insertions(+), 75 deletions(-)

-- 
2.45.2