Index: abi/include/abi/ipc/interfaces.h
===================================================================
--- abi/include/abi/ipc/interfaces.h	(revision 9675296fe33ff287a6d2d86321c97dbd34619703)
+++ abi/include/abi/ipc/interfaces.h	(revision c8cf261a450bf22fa6cc6e9872a1f07f9e7dccda)
@@ -187,5 +187,9 @@
 	    FOURCC_COMPACT('i', 'p', 'c', 't') | IFACE_EXCHANGE_SERIALIZE,
 	INTERFACE_PCI =
-	    FOURCC_COMPACT('p', 'c', 'i', ' ') | IFACE_EXCHANGE_SERIALIZE
+	    FOURCC_COMPACT('p', 'c', 'i', ' ') | IFACE_EXCHANGE_SERIALIZE,
+	INTERFACE_DISPLAY =
+	    FOURCC_COMPACT('d', 's', 'p', 'l') | IFACE_EXCHANGE_SERIALIZE,
+	INTERFACE_GC =
+	    FOURCC_COMPACT('g', 'f', 'x', 'c') | IFACE_EXCHANGE_SERIALIZE,
 } iface_t;