Index: abi/include/abi/ipc/interfaces.h
===================================================================
--- abi/include/abi/ipc/interfaces.h	(revision 0761448df8f6e5a4d681a24b634ffc5ddbf890ad)
+++ abi/include/abi/ipc/interfaces.h	(revision e04b72d69126c4074644c19c920bf771d9c72a1e)
@@ -1,3 +1,4 @@
 /*
+ * Copyright (c) 2023 Jiri Svoboda
  * Copyright (c) 2014 Martin Decky
  * All rights reserved.
@@ -186,4 +187,8 @@
 	INTERFACE_DDEV =
 	    FOURCC_COMPACT('d', 'd', 'e', 'v') | IFACE_EXCHANGE_SERIALIZE,
+	INTERFACE_DISPCFG =
+	    FOURCC_COMPACT('d', 'c', 'f', 'g') | IFACE_EXCHANGE_SERIALIZE,
+	INTERFACE_DISPCFG_CB =
+	    FOURCC_COMPACT('d', 'c', 'f', 'g') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
 	INTERFACE_DISPLAY =
 	    FOURCC_COMPACT('d', 's', 'p', 'l') | IFACE_EXCHANGE_SERIALIZE,