drm/i915: Disable trickle feed via MI_ARB_STATE for the gen4

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According to BSpec, trickle feed should be disabled for BW and
mobile CL. Those constraints seem to match all of our gen4 chipsets.

Trickle feed is disabled via the MI_ARB_STATE register instead of
per plane controls on gen4.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Ville Syrjälä 2013-06-07 10:47:02 +03:00 • committed by Daniel Vetter

parent de1aa629aa

commit 20f949670f

1 changed files with 4 additions and 0 deletions

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drivers/gpu/drm/i915/intel_pm.c

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