[v30,0/3] SAGV support for Gen12+

Message

Stanislav Lisovskiy May 14, 2020, 7:48 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as current seems to be outdated and using skl specific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
v26: Had to resend the whole series as one more mid patch was added
v27: Patches 2,3,7 were pushed, have to resend the series to prevent
     build failure.
v28: PCode patch was merged, one patch was added, sent new series.
v30: 3 patches merged, resending the rest with comments fixed

Stanislav Lisovskiy (3):
  drm/i915: Add TGL+ SAGV support
  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       | 137 ++++++++++----
 drivers/gpu/drm/i915/display/intel_bw.h       |   9 +
 drivers/gpu/drm/i915/display/intel_display.c  |   8 +-
 .../drm/i915/display/intel_display_types.h    |   5 +
 drivers/gpu/drm/i915/intel_pm.c               | 168 +++++++++++++++---
 drivers/gpu/drm/i915/intel_pm.h               |   2 +
 6 files changed, 268 insertions(+), 61 deletions(-)