[00/13] drm/i915/dmc_wl: Fixes and enablement for Xe3_LPD

Message

Gustavo Sousa Oct. 21, 2024, 10:27 p.m. UTC

Using the DMC wakelock is the official recommendation for Xe3_LPD. This
series apply fixes to the current DMC wakelock implementation and
enables it by default for Xe3_LPD. The series has been tested with a PTL
machine.

Gustavo Sousa (13):
  drm/xe: Mimic i915 behavior for non-sleeping MMIO wait
  drm/i915/dmc_wl: Use non-sleeping variant of MMIO wait
  drm/i915/dmc_wl: Check for non-zero refcount in release work
  drm/i915/dmc_wl: Get wakelock when disabling dynamic DC states
  drm/i915/dmc_wl: Use sentinel item for range tables
  drm/i915/dmc_wl: Extract intel_dmc_wl_addr_in_range()
  drm/i915/dmc_wl: Check ranges specific to DC states
  drm/i915/dmc_wl: Allow simpler syntax for single reg in range tables
  drm/i915/dmc_wl: Deal with existing references when disabling
  drm/i915/dmc_wl: Couple enable/disable with dynamic DC states
  drm/i915/dmc_wl: Add and use HAS_DMC_WAKELOCK()
  drm/i915/dmc_wl: Sanitize enable_dmc_wl according to hardware support
  drm/i915/xe3lpd: Use DMC wakelock by default

 drivers/gpu/drm/i915/display/intel_de.h       |  11 +
 .../drm/i915/display/intel_display_device.h   |   1 +
 .../drm/i915/display/intel_display_driver.c   |   2 +-
 .../drm/i915/display/intel_display_params.c   |   4 +-
 .../drm/i915/display/intel_display_params.h   |   2 +-
 .../i915/display/intel_display_power_well.c   |  15 +-
 drivers/gpu/drm/i915/display/intel_dmc.c      |   4 -
 drivers/gpu/drm/i915/display/intel_dmc_wl.c   | 282 ++++++++++++++----
 drivers/gpu/drm/i915/display/intel_dmc_wl.h   |   2 +
 .../drm/xe/compat-i915-headers/intel_uncore.h |  13 +-
 10 files changed, 269 insertions(+), 67 deletions(-)