From e7d0fbbc71d7e57f574b3a92dfae3af1ea945a38 Mon Sep 17 00:00:00 2001
From: Gunar Schorcht <gunar@schorcht.net>
Date: Mon, 14 Nov 2022 07:27:37 +0100
Subject: [PATCH] sys/net/gnrc/netif: add tinyUSB netdev to auto_init

---
 .../init_devs/auto_init_tinyusb_netdev.c      | 61 +++++++++++++++++++
 sys/net/gnrc/netif/init_devs/init.c           |  6 ++
 2 files changed, 67 insertions(+)
 create mode 100644 sys/net/gnrc/netif/init_devs/auto_init_tinyusb_netdev.c

diff --git a/sys/net/gnrc/netif/init_devs/auto_init_tinyusb_netdev.c b/sys/net/gnrc/netif/init_devs/auto_init_tinyusb_netdev.c
new file mode 100644
index 0000000000..aece7bc08b
--- /dev/null
+++ b/sys/net/gnrc/netif/init_devs/auto_init_tinyusb_netdev.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2019 Koen Zandberg
+ *               2022 Gunar Schorcht
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ *
+ */
+
+/**
+ * @ingroup sys_auto_init_gnrc_netif
+ * @{
+ *
+ * @file
+ * @brief   Auto initialization for tinyUSB CDC ECM module
+ *
+ * @author  Koen Zandberg <koen@bergzand.net>
+ * @author  Gunar Schorcht <gunar@schorcht.net>
+ */
+
+#define USB_H_USER_IS_RIOT_INTERNAL
+
+#include "include/init_devs.h"
+#include "log.h"
+#include "net/gnrc/netif/ethernet.h"
+#include "tinyusb_netdev.h"
+
+/**
+ * @brief global cdc ecm object, declared in the usb auto init file
+ */
+extern tinyusb_netdev_t tinyusb_netdev;
+
+/**
+ * @brief   Define stack parameters for the MAC layer thread
+ * @{
+ */
+#define TUSB_NETDEV_STACKSIZE   (GNRC_NETIF_STACKSIZE_DEFAULT)
+#ifndef TUSB_NETDEV_PRIO
+#define TUSB_NETDEV_PRIO        (GNRC_NETIF_PRIO)
+#endif
+
+/**
+ * @brief   Stacks for the MAC layer threads
+ */
+static char _netdev_eth_stack[TUSB_NETDEV_STACKSIZE];
+static gnrc_netif_t _netif;
+
+extern void tinyusb_netdev_setup(tinyusb_netdev_t *dev);
+
+void auto_init_tinyusb_netdev(void)
+{
+    LOG_DEBUG("[auto_init_netif] initializing tinyUSB netdev #0\n");
+
+    tinyusb_netdev_setup(&tinyusb_netdev);
+    /* initialize netdev<->gnrc adapter state */
+    gnrc_netif_ethernet_create(&_netif, _netdev_eth_stack,
+                               TUSB_NETDEV_STACKSIZE, TUSB_NETDEV_PRIO,
+                               "tinyusb_netdev", &tinyusb_netdev.netdev);
+}
+/** @} */
diff --git a/sys/net/gnrc/netif/init_devs/init.c b/sys/net/gnrc/netif/init_devs/init.c
index 67df6e0a1a..8360365cbf 100644
--- a/sys/net/gnrc/netif/init_devs/init.c
+++ b/sys/net/gnrc/netif/init_devs/init.c
@@ -171,4 +171,10 @@ void gnrc_netif_init_devs(void)
         extern void auto_init_sx126x(void);
         auto_init_sx126x();
     }
+
+    if (IS_USED(MODULE_TINYUSB_NETDEV)) {
+        extern void auto_init_tinyusb_netdev(void);
+        auto_init_tinyusb_netdev();
+    }
+
 }