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Commit 743b57d8 authored by Ville Syrjälä's avatar Ville Syrjälä Committed by Daniel Vetter
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drm/i915: There's no need to mask all 3D_CHICKEN bits on SNB 



The need to set all of the mask bits for 3D_CHICKEN3 was required
only for pre-production hardware.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: default avatarAntti Koskipää <antti.koskipaa@linux.intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 5eb146dd

drivers/gpu/drm/i915/intel_pm.c

+2 −3
Original line number Diff line number Diff line
@@ -4696,9 +4696,8 @@ static void gen6_init_clock_gating(struct drm_device *dev) 
		   GEN6_RCCUNIT_CLOCK_GATE_DISABLE);



	/* WaStripsFansDisableFastClipPerformanceFix:snb */

	/* Bspec says we need to always set all mask bits. */

	I915_WRITE(_3D_CHICKEN3, (0xFFFF << 16) |

		   _3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL);

	I915_WRITE(_3D_CHICKEN3,

		   _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL));



	/*

	 * Bspec says: