[00/14] drm/i915: M/N cleanup

Message

Ville Syrjälä Jan. 27, 2022, 9:32 a.m. UTC

From: Ville Syrjälä <[e-mail]>

Start cleaning up the M/N stuff. Couple of eventual goals:
- fix/enhance DRRS (it's currently in kind of poor state)
- move towards eliminating any RMW stuff from the atomic
  commit so that we can start playing around with using
  DSB for it, and the DRRS PIPECONF RMWs are a bit in the
  way so need to think of a way to avoid them, or at least
  make them not race with the atomic commit.

Ville Syrjälä (14):
  drm/i915: Extract intel_{get,set}_m_n()
  drm/i915: Clean up M/N register defines
  drm/i915: s/gmch_{m,n}/data_{m,n}/
  drm/i915: Move drrs hardware bit frobbing to small helpers
  drm/i915: Make M/N set/get a bit more direct
  drm/i915: Move PCH transcoder M/N setup into the PCH code
  drm/i915: Move M/N setup to a more logical place on ddi platforms
  drm/i915: Extract {i9xx,ilk}_configure_cpu_transcoder()
  drm/i915: Add fdi_m2_n2
  drm/i915: Program FDI RX TUSIZE2
  drm/i915: Dump dp_m2_n2 always
  drm/i915: Extract can_enable_drrs()
  drm/i915: Set DP M2/N2 equal to M1/N1 when not doing DRRS
  drm/i915: Always check dp_m2_n2 on pre-bdw

 drivers/gpu/drm/i915/display/g4x_dp.c         |  20 +-
 drivers/gpu/drm/i915/display/intel_ddi.c      |  18 +-
 drivers/gpu/drm/i915/display/intel_display.c  | 355 ++++++++----------
 drivers/gpu/drm/i915/display/intel_display.h  |  35 +-
 .../drm/i915/display/intel_display_types.h    |  21 +-
 drivers/gpu/drm/i915/display/intel_dp.c       |   2 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |   2 -
 drivers/gpu/drm/i915/display/intel_drrs.c     | 107 +++---
 drivers/gpu/drm/i915/display/intel_fdi.c      |   9 +
 .../gpu/drm/i915/display/intel_pch_display.c  |  56 ++-
 .../gpu/drm/i915/display/intel_pch_display.h  |   6 +
 drivers/gpu/drm/i915/i915_reg.h               |  22 +-
 12 files changed, 342 insertions(+), 311 deletions(-)