From: Ben Widawsky <benjamin.widawsky@intel.com>
Date: Wed, 11 Mar 2015 09:23:12 +0000 (+0200)
Subject: drm/i915/skl: add WaDisableMaskBasedCammingInRCC workaround
X-Git-Tag: v4.2-rc1~13^2~58^2~65^2~2
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8d09c8123db62859886bbbc504a56ff5d9d9e8cd;p=karo-tx-linux.git

drm/i915/skl: add WaDisableMaskBasedCammingInRCC workaround

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Nick Hoath <nicholas.hoath@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index e23cbdc029b8..000f608d8ea6 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -970,8 +970,8 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring)
 	 * FIXME: don't apply the following on BXT for stepping C. On BXT A0
 	 * the flag reads back as 0.
 	 */
-	/* WaDisableMaskBasedCammingInRCC:bxtA */
-	if (IS_BROXTON(dev))
+	/* WaDisableMaskBasedCammingInRCC:sklC,bxtA */
+	if (INTEL_REVID(dev) == SKL_REVID_C0 || IS_BROXTON(dev))
 		WA_SET_BIT_MASKED(SLICE_ECO_CHICKEN0,
 				  PIXEL_MASK_CAMMING_DISABLE);