[Intel-gfx] [PATCH 0/8] drm/i915: Add D3Cold-Off support for runtime-pm

[tilak.tangudu at intel.com]

From: Tilak Tangudu <tilak.tangudu at intel.com>

1. Added D3Cold-Off support for runtime pm for discrete gpu.
2. LMEM is switched off and gpu is in off state in D3Cold-Off
   so, lmem & GT deep suspend/resume is added.
3. Re-used i915_gem_backup_suspend, i915_gem_suspend_late
   and i915_gem_resume to handle above 2.
4. These functions use runtime helpers, which in-turn call
   runtime suspend/resume callbacks and leads to deadlock.
   So, these helpers need to be avoided.
5. Added is_intel_rpm_allowed and disallowed rpm callbacks
   during suspending and resuming.
6. Integrated D3Cold policy patch, but is a FIXME, as LMEM
   usage is not queried, lmem->avail stopped tracking lmem 
   usage after ttm port.
7. Added/used i915_save/load_pci_state helpers
8. In intel_guc_global_policies_update, guarded intel_guc_is_ready
   with rpm helpers as it needs guc interaction.
9. Fixed error *ERROR DC state mismatch (0x8 -> 0x0)".
10. Guarded rc6 rpm helpers with is_intel_rpm_allowed as these
    are called in suspend/resume cllbacks. 

Signed-off-by: Tilak Tangudu <tilak.tangudu at intel.com>

Anshuman Gupta (1):
  Drm/i915/rpm: Add intel_runtime_idle

Aravind Iddamsetty (1):
  drm/i915: Add i915_save/load_pci_state helpers

Tilak Tangudu (6):
  drm/i915: Added is_intel_rpm_allowed helper
  drm/i915: Guard rc6 helpers with is_intel_rpm_allowed
  drm/i915: Extend rpm in intel_guc_global_policies_update
  drm/i915: sanitize dc state in rpm resume
  drm/i915/rpm: d3cold Policy
  drm/i915 : Add D3COLD OFF support

 .../drm/i915/display/intel_display_power.c    |   1 +
 drivers/gpu/drm/i915/gt/intel_rc6.c           |  13 +-
 drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c    |   9 +-
 drivers/gpu/drm/i915/i915_driver.c            | 126 ++++++++++++++++--
 drivers/gpu/drm/i915/i915_driver.h            |   2 +
 drivers/gpu/drm/i915/i915_drv.h               |   1 +
 drivers/gpu/drm/i915/i915_params.c            |   5 +
 drivers/gpu/drm/i915/i915_params.h            |   1 +
 drivers/gpu/drm/i915/intel_pm.c               |  35 +++++
 drivers/gpu/drm/i915/intel_pm.h               |   1 +
 drivers/gpu/drm/i915/intel_runtime_pm.c       |  26 +++-
 drivers/gpu/drm/i915/intel_runtime_pm.h       |   8 ++
 12 files changed, 206 insertions(+), 22 deletions(-)

-- 
2.25.1