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drm/i915: Document that we are implementing WaDisableBackToBackFlipFix 

For the next person that checks these kind of things, without having to
dig up the register definition.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2012-10-04 18:49:23 +01:00 committed by Daniel Vetter
parent 1a4bd9eaf0
commit 62cb944fa2
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/i915/intel_pm.c
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@ -3536,6 +3536,7 @@ static void ivybridge_init_clock_gating(struct drm_device *dev)
I915_WRITE(_3D_CHICKEN3,
_MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL));
/* WaDisableBackToBackFlipFix */
I915_WRITE(IVB_CHICKEN3,
CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
CHICKEN3_DGMG_DONE_FIX_DISABLE);
@ -3616,6 +3617,7 @@ static void valleyview_init_clock_gating(struct drm_device *dev)
I915_WRITE(_3D_CHICKEN3,
_MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL));
/* WaDisableBackToBackFlipFix */
I915_WRITE(IVB_CHICKEN3,
CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
CHICKEN3_DGMG_DONE_FIX_DISABLE);