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Commit a9627b88 authored by Damien Lespiau's avatar Damien Lespiau Committed by Daniel Vetter
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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: default avatarDamien Lespiau <damien.lespiau@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: default avatarPaulo Zanoni <paulo.r.zanonI@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 62cb944f

drivers/gpu/drm/i915/intel_pm.c

+0 −4
Original line number Diff line number Diff line
@@ -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);