添加rtthread相关代码

riscv/rtthread/components/drivers/usb/usbhost/class/adk.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2011-12-12     Yi Qiu      first version
+ */
+
+#ifndef __ADK_H__
+#define __ADK_H__
+
+#include <rtthread.h>
+
+struct uadkinst
+{
+    upipe_t pipe_in;
+    upipe_t pipe_out;
+
+    struct rt_device device;
+};
+typedef struct uadkinst* uadk_t;
+
+#define USB_ACCESSORY_VENDOR_ID         0x18D1
+#define USB_ACCESSORY_PRODUCT_ID        0x2D00
+#define USB_ACCESSORY_ADB_PRODUCT_ID    0x2D01
+
+#define ACCESSORY_STRING_MANUFACTURER   0
+#define ACCESSORY_STRING_MODEL          1
+#define ACCESSORY_STRING_DESCRIPTION    2
+#define ACCESSORY_STRING_VERSION        3
+#define ACCESSORY_STRING_URI            4
+#define ACCESSORY_STRING_SERIAL         5
+
+#define USB_REQ_GET_PROTOCOL            51
+#define USB_REQ_SEND_STRING             52
+#define USB_REQ_START                   53
+
+#define USB_CLASS_ADK                   0xff
+
+#endif
+