1 /* 2 * Gadget Function Driver for MTP 3 * 4 * Copyright (C) 2010 Google, Inc. 5 * Author: Mike Lockwood <lockwood@android.com> 6 * 7 * This software is licensed under the terms of the GNU General Public 8 * License version 2, as published by the Free Software Foundation, and 9 * may be copied, distributed, and modified under those terms. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 */ 17 18 #ifndef __LINUX_USB_F_MTP_H 19 #define __LINUX_USB_F_MTP_H 20 21 #ifdef __KERNEL__ 22 23 struct mtp_data_header { 24 /* length of packet, including this header */ 25 uint32_t length; 26 /* container type (2 for data packet) */ 27 uint16_t type; 28 /* MTP command code */ 29 uint16_t command; 30 /* MTP transaction ID */ 31 uint32_t transaction_id; 32 }; 33 34 #endif /* __KERNEL__ */ 35 36 struct mtp_file_range { 37 /* file descriptor for file to transfer */ 38 int fd; 39 /* offset in file for start of transfer */ 40 loff_t offset; 41 /* number of bytes to transfer */ 42 int64_t length; 43 /* MTP command ID for data header, 44 * used only for MTP_SEND_FILE_WITH_HEADER 45 */ 46 uint16_t command; 47 /* MTP transaction ID for data header, 48 * used only for MTP_SEND_FILE_WITH_HEADER 49 */ 50 uint32_t transaction_id; 51 }; 52 53 struct mtp_event { 54 /* size of the event */ 55 size_t length; 56 /* event data to send */ 57 void *data; 58 }; 59 60 /* Sends the specified file range to the host */ 61 #define MTP_SEND_FILE _IOW('M', 0, struct mtp_file_range) 62 /* Receives data from the host and writes it to a file. 63 * The file is created if it does not exist. 64 */ 65 #define MTP_RECEIVE_FILE _IOW('M', 1, struct mtp_file_range) 66 /* Sends an event to the host via the interrupt endpoint */ 67 #define MTP_SEND_EVENT _IOW('M', 3, struct mtp_event) 68 /* Sends the specified file range to the host, 69 * with a 12 byte MTP data packet header at the beginning. 70 */ 71 #define MTP_SEND_FILE_WITH_HEADER _IOW('M', 4, struct mtp_file_range) 72 73 #endif /* __LINUX_USB_F_MTP_H */ 74