drm/i915/gen9: Add HDC_CHICKEN1 to HW whitelist

[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_ringbuffer.c

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index c938b93c4f83b457b6f0e9e86c23447abba105c2..62f535c1b78e1508a58f6dfa1c1fd71978dcaae8 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -986,6 +986,11 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring)
        if (ret)
                return ret;
 
+       /* WaAllowUMDToModifyHDCChicken1:skl,bxt */
+       ret = wa_ring_whitelist_reg(ring, GEN8_HDC_CHICKEN1);
+       if (ret)
+               return ret;
+
        return 0;
 }