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drm/i915: There's no need to mask all 3D_CHICKEN bits on SNB

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

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Antti Koskipää <antti.koskipaa@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-02-04 21:59:17 +02:00 committed by Daniel Vetter
parent 5eb146dd0b
commit 743b57d830
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/i915/intel_pm.c
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@ -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: