Add firmware for the ATUSB IEEE 802.15.4 USB Adapter

[linux-libre-firmware.git] / atusb / sernum.c

diff --git a/atusb/sernum.c b/atusb/sernum.c
new file mode 100644 (file)
index 0000000..41e434c
--- /dev/null
+++ b/atusb/sernum.c
@@ -0,0 +1,47 @@
+/*
+ * fw/sernum.c - ATUSB serial number
+ *
+ * Written 2008-2011, 2013 by Werner Almesberger
+ * Copyright 2008-2011, 2013 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "usb.h"
+
+#include "board.h"
+#include "sernum.h"
+
+
+static const uint8_t string_descriptor_0[] = {
+       4,                              /* blength */
+       USB_DT_STRING,                  /* bDescriptorType */
+       LE(USB_LANGID_ENGLISH_US)       /* wLANGID[0]  */
+};
+
+
+bool sernum_get_descr(uint8_t type, uint8_t index, const uint8_t **reply,
+    uint8_t *size)
+{
+       if (type != USB_DT_STRING)
+               return 0;
+       switch (index) {
+       case 0:
+               *reply = string_descriptor_0;
+               *size = sizeof(string_descriptor_0);
+               return 1;
+       case 1:
+               *reply = board_sernum;
+               *size = sizeof(board_sernum);
+               return 1;
+       default:
+               return 0;
+       }
+}