From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Tue, 4 Feb 2014 19:59:16 +0000 (+0200)
Subject: drm/i915: Assume we implement WaStripsFansDisableFastClipPerformanceFix:snb
X-Git-Tag: next-20140306~56^2~79
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5eb146dd0b092b79f2c2c5449e7e78e94c076ff9;p=karo-tx-linux.git

drm/i915: Assume we implement WaStripsFansDisableFastClipPerformanceFix:snb

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>
---

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 45dd23f12a6f..f4ac8f324b1c 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -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);