drm/i915: get a runtime PM ref for the deferred GT powersave enabling

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At least on VLV but probably on other platforms too we depend on RC6
being enabled for RPM, so disable RPM until the delayed RC6 enabling
completes.

v2:
- explain the reason for the _noresume version of RPM get (Daniel)
- use the simpler 'if (schedule_work()) rpm_get();' instead of
  'if (!cancel_work_sync()) rpm_get(); schedule_work();'

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

This commit is contained in:

Imre Deak 2014-04-14 20:24:29 +03:00 • committed by Daniel Vetter

parent dc1d0136a4

commit c6df39b5ea

3 changed files with 38 additions and 3 deletions

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5

drivers/gpu/drm/i915/i915_drv.c

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2

drivers/gpu/drm/i915/intel_drv.h

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34

drivers/gpu/drm/i915/intel_pm.c

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