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drm/i915: enable HiZ Raw Stall Optimization on IVB

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The optimization helps IVB too.  No piglit regression.

Signed-off-by: Chia-I Wu <olv@lunarg.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chia-I Wu 2014-01-28 13:29:34 +08:00 committed by Daniel Vetter
parent fe27c60662
commit 116f2b6da8
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/intel_pm.c
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@ -4866,6 +4866,10 @@ static void ivybridge_init_clock_gating(struct drm_device *dev)
gen7_setup_fixed_func_scheduler(dev_priv);
/* enable HiZ Raw Stall Optimization */
I915_WRITE(CACHE_MODE_0_GEN7,
_MASKED_BIT_DISABLE(HIZ_RAW_STALL_OPT_DISABLE));
/* WaDisable4x2SubspanOptimization:ivb */
I915_WRITE(CACHE_MODE_1,
_MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE));