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drm/i915/skl: Use a LRI for WaDisableDgMirrorFixInHalfSliceChicken5 

I have no idea how that crept in, but we need to do the write from the
ring and this is a masked register. Two fixes in 1!

Cc: Nick Hoath <nicholas.hoath@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Nick Hoath <nicholas.hoath@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2015-02-11 18:21:44 +00:00 committed by Daniel Vetter
parent 35c8ce6ac5
commit a86eb582e3
1 changed files with 3 additions and 7 deletions
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10
drivers/gpu/drm/i915/intel_ringbuffer.c
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@ -959,13 +959,9 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring)
if (INTEL_REVID(dev) == SKL_REVID_A0 ||
INTEL_REVID(dev) == SKL_REVID_B0) {
/*
* WaDisableDgMirrorFixInHalfSliceChicken5:skl
* This is a pre-production w/a.
*/
I915_WRITE(GEN9_HALF_SLICE_CHICKEN5,
I915_READ(GEN9_HALF_SLICE_CHICKEN5) &
~GEN9_DG_MIRROR_FIX_ENABLE);
/* WaDisableDgMirrorFixInHalfSliceChicken5:skl */
WA_CLR_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN5,
GEN9_DG_MIRROR_FIX_ENABLE);
}
if (IS_SKYLAKE(dev) && INTEL_REVID(dev) <= SKL_REVID_B0) {