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drm/i915/bdw: Sampler power bypass disable

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BDW-A workaround.

BDW Bug #1899812

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ben Widawsky 2013-11-02 21:07:57 -07:00 committed by Daniel Vetter
parent fd392b6003
commit bf66347cd3
2 changed files with 3 additions and 0 deletions
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1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -5009,6 +5009,7 @@
#define HALF_SLICE_CHICKEN3 0xe184
#define GEN8_CENTROID_PIXEL_OPT_DIS (1<<8)
#define GEN8_SAMPLER_POWER_BYPASS_DIS (1<<1)
#define G4X_AUD_VID_DID (dev_priv->info->display_mmio_offset + 0x62020)
#define INTEL_AUDIO_DEVCL 0x808629FB

2
drivers/gpu/drm/i915/intel_pm.c
View File

@ -5290,6 +5290,8 @@ static void gen8_init_clock_gating(struct drm_device *dev)
"GEN8_CENTROID_PIXEL_OPT_DIS not be needed for production\n");
I915_WRITE(HALF_SLICE_CHICKEN3,
_MASKED_BIT_ENABLE(GEN8_CENTROID_PIXEL_OPT_DIS));
I915_WRITE(HALF_SLICE_CHICKEN3,
_MASKED_BIT_ENABLE(GEN8_SAMPLER_POWER_BYPASS_DIS));
I915_WRITE(GAMTARBMODE, _MASKED_BIT_ENABLE(ARB_MODE_BWGTLB_DISABLE));
/* WaSwitchSolVfFArbitrationPriority */