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drm/i915: Assume we implement WaStripsFansDisableFastClipPerformanceFix:snb

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Based on the name, the workaround we implement is
WaStripsFansDisableFastClipPerformanceFix. Unfortunately there's no
description in the w/a database, so this is just a guess.

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 21:59:16 +02:00 committed by Daniel Vetter
parent 8d85d27281
commit 5eb146dd0b
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/i915/intel_pm.c
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@ -4695,6 +4695,7 @@ static void gen6_init_clock_gating(struct drm_device *dev)
GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
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);