[Intel-gfx] [PATCH 0/6] drm/i915: BIOS display/adapter power state notifications

[Jani Nikula]

Hi all, here are some patches for letting the BIOS do some further power
savings on HSW, now based on intel-drm-nightly with Paulo's PC8+ work.

Patches 1-4 are the glue code to wrap the BIOS SWSCI calls into a few
sensible function calls.

Patches 5-6 are for reference only, and I presume they will have to be
tweaked based on testing. Where exactly to do the calls? What parameters
are to be used in the end? Possibly calls need to be added on the
suspend/resume paths too.

I don't have the setup to do the testing and measurements, but I hope
these will enable others.


BR,
Jani.



Jani Nikula (6):
  drm/i915: expose intel_ddi_get_encoder_port()
  drm/i915: add plumbing for SWSCI
  drm/i915: add opregion function to notify bios of encoder
    enable/disable
  drm/i915: add opregion function to notify bios of adapter power state
  DRAFT: drm/i915: do display power state notification on crtc
    enable/disable
  DRAFT: drm/i915: do adapter power state notification on PC8+
    enable/disable

 drivers/gpu/drm/i915/i915_drv.h       |   12 ++
 drivers/gpu/drm/i915/intel_ddi.c      |    2 +-
 drivers/gpu/drm/i915/intel_display.c  |   12 +-
 drivers/gpu/drm/i915/intel_drv.h      |    1 +
 drivers/gpu/drm/i915/intel_opregion.c |  200 ++++++++++++++++++++++++++++++++-
 5 files changed, 223 insertions(+), 4 deletions(-)

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1.7.9.5