1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * tm6000-buf.c - driver for TM5600/TM6000/TM6010 USB video capture devices 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (c) 2006-2007 Mauro Carvalho Chehab <mchehab@kernel.org> 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #include <linux/videodev2.h> 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #define TM6000_URB_MSG_LEN 180 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun struct usb_isoc_ctl { 13*4882a593Smuzhiyun /* max packet size of isoc transaction */ 14*4882a593Smuzhiyun int max_pkt_size; 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun /* number of allocated urbs */ 17*4882a593Smuzhiyun int num_bufs; 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun /* urb for isoc transfers */ 20*4882a593Smuzhiyun struct urb **urb; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /* transfer buffers for isoc transfer */ 23*4882a593Smuzhiyun char **transfer_buffer; 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun /* Last buffer command and region */ 26*4882a593Smuzhiyun u8 cmd; 27*4882a593Smuzhiyun int pos, size, pktsize; 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun /* Last field: ODD or EVEN? */ 30*4882a593Smuzhiyun int vfield, field; 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun /* Stores incomplete commands */ 33*4882a593Smuzhiyun u32 tmp_buf; 34*4882a593Smuzhiyun int tmp_buf_len; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun /* Stores already requested buffers */ 37*4882a593Smuzhiyun struct tm6000_buffer *buf; 38*4882a593Smuzhiyun }; 39