[Intel-gfx] [RFC PATCH 0/3] drm/i915: tell bios to update audio controller em4/5 values

[Jani Nikula]

Hi Mengdong -

Here's the first drafts towards fixing [1], but unfortunately this is
still Broadwell specific. Currently patch 2 is not needed, but is
included in case we'll need that too (maybe for Haswell?). Please
review/test, I don't have access to either hsw or bdw right now.

BR,
Jani.

[1] https://bugzilla.kernel.org/show_bug.cgi?id=74861


Jani Nikula (3):
  drm/i915: add opregion function to notify BIOS of CDCLK changes
  drm/i915: add opregion function to enable/disable audio device
  drm/i915: tell BIOS to update audio controller EM4/EM5 divider values

 drivers/gpu/drm/i915/i915_drv.h       | 12 +++++++++++
 drivers/gpu/drm/i915/intel_opregion.c | 39 +++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_pm.c       | 11 ++++++++++
 3 files changed, 62 insertions(+)

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2.0.0