disp: msm: sde: add esd check during wr_ptr wait

Move esd check to write pointer wait instead of during
write pointer timeout. With this change display will avoid
improperly signaling a retire fence and allowing two flushes
to happen within a single vsync in cases where ESD failure
is happening.

Change-Id: I6fbd76a2f6b47d3237039f66a3b1edd1f72a0a1d
Signed-off-by: Samantha Tran <samtran@codeaurora.org>

msm/sde/sde_connector.h

@@ -742,6 +742,21 @@ static inline enum sde_rm_topology_name sde_connector_get_old_topology_name(
 	return c_state->old_topology_name;
 }
 
+/**
+ * sde_connector_panel_dead - check if panel is dead
+ * @conn: pointer to drm connector
+ * Returns: bool indicating whether or not panel is dead based on connector
+ */
+static inline bool sde_connector_panel_dead(struct drm_connector *conn)
+{
+	struct sde_connector *sde_conn = to_sde_connector(conn);
+
+	if (!sde_conn)
+		return true;
+
+	return sde_conn->panel_dead;
+}
+
 /**
  * sde_connector_set_old_topology_name - helper to cache value of previous
  *	mode's topology