[v25,0/8] SAGV support for Gen12+

Message

Stanislav Lisovskiy April 20, 2020, 11:14 a.m. UTC

For Gen11+ platforms BSpec suggests disabling specific
QGV points separately, depending on bandwidth limitations
and current display configuration. Thus it required adding
a new PCode request for disabling QGV points and some
refactoring of already existing SAGV code.
Also had to refactor intel_can_enable_sagv function,
as current seems to be outdated and using skl specific
workarounds, also not following BSpec for Gen11+.

v25: Rebased patch series as part was merged already

Stanislav Lisovskiy (8):
  drm/i915: Introduce skl_plane_wm_level accessor.
  drm/i915: Use bw state for per crtc SAGV evaluation
  drm/i915: Separate icl and skl SAGV checking
  drm/i915: Add TGL+ SAGV support
  drm/i915: Added required new PCode commands
  drm/i915: Rename bw_state to new_bw_state
  drm/i915: Restrict qgv points which don't have enough bandwidth.
  drm/i915: Enable SAGV support for Gen12

 drivers/gpu/drm/i915/display/intel_bw.c       | 163 +++++---
 drivers/gpu/drm/i915/display/intel_bw.h       |  15 +
 drivers/gpu/drm/i915/display/intel_display.c  |   8 +-
 .../drm/i915/display/intel_display_types.h    |   6 +
 drivers/gpu/drm/i915/i915_reg.h               |   5 +
 drivers/gpu/drm/i915/intel_pm.c               | 394 +++++++++++++++---
 drivers/gpu/drm/i915/intel_pm.h               |   5 +-
 drivers/gpu/drm/i915/intel_sideband.c         |   2 +
 8 files changed, 498 insertions(+), 100 deletions(-)