usb/tm6000/tm6000-usb-isoc.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * tm6000-buf.c - driver for TM5600/TM6000/TM6010 USB video capture devices
0004  *
0005  * Copyright (c) 2006-2007 Mauro Carvalho Chehab <mchehab@kernel.org>
0006  */
0007
0008 #include <linux/videodev2.h>
0009
0010 #define TM6000_URB_MSG_LEN 180
0011
0012 struct usb_isoc_ctl {
0013         /* max packet size of isoc transaction */
0014     int             max_pkt_size;
0015
0016         /* number of allocated urbs */
0017     int             num_bufs;
0018
0019         /* urb for isoc transfers */
0020     struct urb          **urb;
0021
0022         /* transfer buffers for isoc transfer */
0023     char                **transfer_buffer;
0024
0025         /* Last buffer command and region */
0026     u8              cmd;
0027     int             pos, size, pktsize;
0028
0029         /* Last field: ODD or EVEN? */
0030     int             vfield, field;
0031
0032         /* Stores incomplete commands */
0033     u32             tmp_buf;
0034     int             tmp_buf_len;
0035
0036         /* Stores already requested buffers */
0037     struct tm6000_buffer        *buf;
0038 };