USB: gadget: f_mtp: USB gadget function driver for MTP and PTP device support.

Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/include/linux/usb/f_mtp.h b/include/linux/usb/f_mtp.h
new file mode 100644
index 0000000..c1c9aef
--- /dev/null
+++ b/include/linux/usb/f_mtp.h
@@ -0,0 +1,44 @@
+/*
+ * Gadget Function Driver for MTP
+ *
+ * Copyright (C) 2010 Google, Inc.
+ * Author: Mike Lockwood <lockwood@android.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __LINUX_USB_F_MTP_H
+#define __LINUX_USB_F_MTP_H
+
+/* Constants for MTP_SET_INTERFACE_MODE */
+#define MTP_INTERFACE_MODE_MTP  0
+#define MTP_INTERFACE_MODE_PTP  1
+
+
+struct mtp_file_range {
+	/* file descriptor for file to transfer */
+	int			fd;
+	/* offset in file for start of transfer */
+	loff_t  	offset;
+	/* number of bytes to transfer */
+	size_t		length;
+};
+
+/* Sends the specified file range to the host */
+#define MTP_SEND_FILE              _IOW('M', 0, struct mtp_file_range)
+/* Receives data from the host and writes it to a file.
+ * The file is created if it does not exist.
+ */
+#define MTP_RECEIVE_FILE           _IOW('M', 1, struct mtp_file_range)
+/* Sets the driver mode to either MTP or PTP */
+#define MTP_SET_INTERFACE_MODE     _IOW('M', 2, int)
+
+#endif /* __LINUX_USB_F_MTP_H */