1/* dvb-usb-urb.c is part of the DVB USB library. 2 * 3 * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) 4 * see dvb-usb-init.c for copyright information. 5 * 6 * This file keeps functions for initializing and handling the 7 * USB and URB stuff. 8 */ 9#include "dvb-usb-common.h" 10 11int dvb_usb_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf, 12 u16 rlen, int delay_ms) 13{ 14 int actlen,ret = -ENOMEM; 15 16 if (!d || wbuf == NULL || wlen == 0) 17 return -EINVAL; 18 19 if (d->props.generic_bulk_ctrl_endpoint == 0) { 20 err("endpoint for generic control not specified."); 21 return -EINVAL; 22 } 23 24 if ((ret = mutex_lock_interruptible(&d->usb_mutex))) 25 return ret; 26 27 deb_xfer(">>> "); 28 debug_dump(wbuf,wlen,deb_xfer); 29 30 ret = usb_bulk_msg(d->udev,usb_sndbulkpipe(d->udev, 31 d->props.generic_bulk_ctrl_endpoint), wbuf,wlen,&actlen, 32 2000); 33 34 if (ret) 35 err("bulk message failed: %d (%d/%d)",ret,wlen,actlen); 36 else 37 ret = actlen != wlen ? -1 : 0; 38 39 /* an answer is expected, and no error before */ 40 if (!ret && rbuf && rlen) { 41 if (delay_ms) 42 msleep(delay_ms); 43 44 ret = usb_bulk_msg(d->udev,usb_rcvbulkpipe(d->udev, 45 d->props.generic_bulk_ctrl_endpoint_response ? 46 d->props.generic_bulk_ctrl_endpoint_response : 47 d->props.generic_bulk_ctrl_endpoint),rbuf,rlen,&actlen, 48 2000); 49 50 if (ret) 51 err("recv bulk message failed: %d",ret); 52 else { 53 deb_xfer("<<< "); 54 debug_dump(rbuf,actlen,deb_xfer); 55 } 56 } 57 58 mutex_unlock(&d->usb_mutex); 59 return ret; 60} 61EXPORT_SYMBOL(dvb_usb_generic_rw); 62 63int dvb_usb_generic_write(struct dvb_usb_device *d, u8 *buf, u16 len) 64{ 65 return dvb_usb_generic_rw(d,buf,len,NULL,0,0); 66} 67EXPORT_SYMBOL(dvb_usb_generic_write); 68 69static void dvb_usb_data_complete(struct usb_data_stream *stream, u8 *buffer, size_t length) 70{ 71 struct dvb_usb_adapter *adap = stream->user_priv; 72 if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB) 73 dvb_dmx_swfilter(&adap->demux, buffer, length); 74} 75 76static void dvb_usb_data_complete_204(struct usb_data_stream *stream, u8 *buffer, size_t length) 77{ 78 struct dvb_usb_adapter *adap = stream->user_priv; 79 if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB) 80 dvb_dmx_swfilter_204(&adap->demux, buffer, length); 81} 82 83int dvb_usb_adapter_stream_init(struct dvb_usb_adapter *adap) 84{ 85 adap->stream.udev = adap->dev->udev; 86 if (adap->props.caps & DVB_USB_ADAP_RECEIVES_204_BYTE_TS) 87 adap->stream.complete = dvb_usb_data_complete_204; 88 else 89 adap->stream.complete = dvb_usb_data_complete; 90 adap->stream.user_priv = adap; 91 return usb_urb_init(&adap->stream, &adap->props.stream); 92} 93 94int dvb_usb_adapter_stream_exit(struct dvb_usb_adapter *adap) 95{ 96 return usb_urb_exit(&adap->stream); 97} 98