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drm/i915: Remove the WaDisableBackToBackFlipFix w/a for Haswell 

This workaround is only valid for IVB and VLV and the write triggers an
error on HSW.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@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 18:49:24 +01:00 committed by Daniel Vetter
parent 62cb944fa2
commit a9627b8816
1 changed files with 0 additions and 4 deletions
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4
drivers/gpu/drm/i915/intel_pm.c
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@ -3474,10 +3474,6 @@ static void haswell_init_clock_gating(struct drm_device *dev)
I915_WRITE(_3D_CHICKEN3,
_MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL));
I915_WRITE(IVB_CHICKEN3,
CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
CHICKEN3_DGMG_DONE_FIX_DISABLE);
/* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */
I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);