Index: uspace/drv/bus/usb/usbdbg/Makefile
===================================================================
--- uspace/drv/bus/usb/usbdbg/Makefile	(revision d23fab97e57b15cd1fbea89eab8cc010012d018b)
+++ uspace/drv/bus/usb/usbdbg/Makefile	(revision d23fab97e57b15cd1fbea89eab8cc010012d018b)
@@ -0,0 +1,38 @@
+#
+# Copyright (c) 2017 Petr Manek
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../../../..
+
+LIBS = usbdev usb drv
+
+BINARY = usbdbg
+
+SOURCES = \
+	main.c \
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/bus/usb/usbdbg/main.c
===================================================================
--- uspace/drv/bus/usb/usbdbg/main.c	(revision d23fab97e57b15cd1fbea89eab8cc010012d018b)
+++ uspace/drv/bus/usb/usbdbg/main.c	(revision d23fab97e57b15cd1fbea89eab8cc010012d018b)
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2017 Petr Manek
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbdbg
+ * @{
+ */
+/**
+ * @file
+ * Main routines of USB debug device driver.
+ */
+#include <errno.h>
+#include <usb/debug.h>
+#include <usb/dev/driver.h>
+
+#define NAME "usbdbg"
+
+static int usbdbg_device_add(usb_device_t *dev)
+{
+	usb_log_info("usbdbg_device_add");
+	return EOK;
+}
+
+static int usbdbg_device_remove(usb_device_t *dev)
+{
+	usb_log_info("usbdbg_device_remove");
+	return EOK;
+}
+
+static int usbdbg_device_gone(usb_device_t *dev)
+{
+	usb_log_info("usbdbg_device_gone");
+	return EOK;
+}
+
+static int usbdbg_function_online(ddf_fun_t *fun)
+{
+	/* TODO: What if this is the control function? */
+	return ddf_fun_online(fun);
+}
+
+static int usbdbg_function_offline(ddf_fun_t *fun)
+{
+	/* TODO: What if this is the control function? */
+	return ddf_fun_offline(fun);
+}
+
+/** USB debug driver ops. */
+static const usb_driver_ops_t dbg_driver_ops = {
+	.device_add = usbdbg_device_add,
+	.device_rem = usbdbg_device_remove,
+	.device_gone = usbdbg_device_gone,
+	.function_online = usbdbg_function_online,
+	.function_offline = usbdbg_function_offline
+};
+
+/** USB debug driver. */
+static const usb_driver_t dbg_driver = {
+	.name = NAME,
+	.ops = &dbg_driver_ops,
+	.endpoints = NULL
+};
+
+int main(int argc, char *argv[])
+{
+	printf(NAME ": USB debug device driver.\n");
+
+	log_init(NAME);
+
+	return usb_driver_main(&dbg_driver);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/bus/usb/usbdbg/usbdbg.ma
===================================================================
--- uspace/drv/bus/usb/usbdbg/usbdbg.ma	(revision d23fab97e57b15cd1fbea89eab8cc010012d018b)
+++ uspace/drv/bus/usb/usbdbg/usbdbg.ma	(revision d23fab97e57b15cd1fbea89eab8cc010012d018b)
@@ -0,0 +1,1 @@
+100 usb&dbg