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Commit bf66347c authored by Ben Widawsky's avatar Ben Widawsky Committed by Daniel Vetter
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drm/i915/bdw: Sampler power bypass disable 



BDW-A workaround.

BDW Bug #1899812

Signed-off-by: default avatarBen Widawsky <ben@bwidawsk.net>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent fd392b60

drivers/gpu/drm/i915/i915_reg.h

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/gpu/drm/i915/intel_pm.c

+2 −0
Original line number Diff line number Diff line
@@ -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 */