drm/i915/gen9: Always set mask memory up when enabling DC5 or DC6

Move call to gen9_set_dc_state_debugmask_memory_up() into
gen9_set_dc_state() to prevent us missing it somewhere.
Signed-off-by: NPatrik Jakobsson <patrik.jakobsson@linux.intel.com>
Reviewed-by: NImre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447084107-8521-3-git-send-email-patrik.jakobsson@linux.intel.com

drivers/gpu/drm/i915/intel_runtime_pm.c

@@ -395,6 +395,20 @@ static void assert_can_disable_dc9(struct drm_i915_private *dev_priv)
 	  */
 }
 
+static void gen9_set_dc_state_debugmask_memory_up(
+			struct drm_i915_private *dev_priv)
+{
+	uint32_t val;
+
+	/* The below bit doesn't need to be cleared ever afterwards */
+	val = I915_READ(DC_STATE_DEBUG);
+	if (!(val & DC_STATE_DEBUG_MASK_MEMORY_UP)) {
+		val |= DC_STATE_DEBUG_MASK_MEMORY_UP;
+		I915_WRITE(DC_STATE_DEBUG, val);
+		POSTING_READ(DC_STATE_DEBUG);
+	}
+}
+
 static void gen9_set_dc_state(struct drm_i915_private *dev_priv, uint32_t state)
 {
 	uint32_t val;
@@ -408,6 +422,9 @@ static void gen9_set_dc_state(struct drm_i915_private *dev_priv, uint32_t state)
 
 	WARN_ON_ONCE(state & ~mask);
 
+	if (state & DC_STATE_EN_UPTO_DC5_DC6_MASK)
+		gen9_set_dc_state_debugmask_memory_up(dev_priv);
+
 	val = I915_READ(DC_STATE_EN);
 	DRM_DEBUG_KMS("Setting DC state from %02x to %02x\n",
 		      val & mask, state);
@@ -435,20 +452,6 @@ void bxt_disable_dc9(struct drm_i915_private *dev_priv)
 	gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
 }
 
-static void gen9_set_dc_state_debugmask_memory_up(
-			struct drm_i915_private *dev_priv)
-{
-	uint32_t val;
-
-	/* The below bit doesn't need to be cleared ever afterwards */
-	val = I915_READ(DC_STATE_DEBUG);
-	if (!(val & DC_STATE_DEBUG_MASK_MEMORY_UP)) {
-		val |= DC_STATE_DEBUG_MASK_MEMORY_UP;
-		I915_WRITE(DC_STATE_DEBUG, val);
-		POSTING_READ(DC_STATE_DEBUG);
-	}
-}
-
 static void assert_csr_loaded(struct drm_i915_private *dev_priv)
 {
 	WARN_ONCE(!I915_READ(CSR_PROGRAM(0)),
@@ -497,8 +500,6 @@ static void gen9_enable_dc5(struct drm_i915_private *dev_priv)
 
 	DRM_DEBUG_KMS("Enabling DC5\n");
 
-	gen9_set_dc_state_debugmask_memory_up(dev_priv);
-
 	gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC5);
 }
 
@@ -544,8 +545,6 @@ void skl_enable_dc6(struct drm_i915_private *dev_priv)
 
 	DRM_DEBUG_KMS("Enabling DC6\n");
 
-	gen9_set_dc_state_debugmask_memory_up(dev_priv);
-
 	gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
 
 }