drm/i915: Make vlv and chv forcewake put generic.

These two were using a fw dance logic where posting read was done
after both domain bit were set. When in other gens, the posting
read is done immediately after setting the forcewake bit for each
domain.

Now bring these in line with other gens.
Signed-off-by: NMika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: NDeepak S <deepak.s@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_uncore.c

@@ -234,16 +234,6 @@ static int __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv)
 	return ret;
 }
 
-static void __vlv_force_wake_put(struct drm_i915_private *dev_priv,
-				 int fw_engine)
-{
-	fw_domains_put(dev_priv, fw_engine);
-	fw_domains_posting_read(dev_priv);
-
-	if (!IS_CHERRYVIEW(dev_priv->dev))
-		gen6_gt_check_fifodbg(dev_priv);
-}
-
 static void gen6_force_wake_timer(unsigned long arg)
 {
 	struct intel_uncore_forcewake_domain *domain = (void *)arg;
@@ -998,7 +988,11 @@ void intel_uncore_init(struct drm_device *dev)
 			       FORCEWAKE_MEDIA_GEN9, FORCEWAKE_ACK_MEDIA_GEN9);
 	} else if (IS_VALLEYVIEW(dev)) {
 		dev_priv->uncore.funcs.force_wake_get = fw_domains_get;
-		dev_priv->uncore.funcs.force_wake_put = __vlv_force_wake_put;
+		if (!IS_CHERRYVIEW(dev))
+			dev_priv->uncore.funcs.force_wake_put =
+				fw_domains_put_with_fifo;
+		else
+			dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
 		fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
 			       FORCEWAKE_VLV, FORCEWAKE_ACK_VLV);
 		fw_domain_init(dev_priv, FW_DOMAIN_ID_MEDIA,