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drm/i915: Bring UP Power Wells before disabling RC6. 

We need do forcewake before Disabling RC6, This is what the BIOS
expects while going into suspend.

v2: updated commit message. (Daniel)

Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Deepak S <deepak.s@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Deepak S 2014-08-18 10:35:27 -07:00 committed by Daniel Vetter
parent 31e4b89acb
commit 98a2e5f942
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/i915/intel_pm.c
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@ -3533,8 +3533,14 @@ static void valleyview_disable_rps(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
/* we're doing forcewake before Disabling RC6,
* This what the BIOS expects when going into suspend */
gen6_gt_force_wake_get(dev_priv, FORCEWAKE_ALL);
I915_WRITE(GEN6_RC_CONTROL, 0);
gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL);
gen6_disable_rps_interrupts(dev);
}