96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
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/* dvb-usb-urb.c is part of the DVB USB library.
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*
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* Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
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* see dvb-usb-init.c for copyright information.
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*
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* This file keeps functions for initializing and handling the
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* USB and URB stuff.
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*/
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#include "dvb-usb-common.h"
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int dvb_usb_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf,
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u16 rlen, int delay_ms)
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{
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int actlen,ret = -ENOMEM;
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if (!d || wbuf == NULL || wlen == 0)
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return -EINVAL;
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if (d->props.generic_bulk_ctrl_endpoint == 0) {
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err("endpoint for generic control not specified.");
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return -EINVAL;
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}
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if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
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return ret;
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deb_xfer(">>> ");
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debug_dump(wbuf,wlen,deb_xfer);
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ret = usb_bulk_msg(d->udev,usb_sndbulkpipe(d->udev,
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d->props.generic_bulk_ctrl_endpoint), wbuf,wlen,&actlen,
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2000);
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if (ret)
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err("bulk message failed: %d (%d/%d)",ret,wlen,actlen);
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else
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ret = actlen != wlen ? -1 : 0;
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/* an answer is expected, and no error before */
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if (!ret && rbuf && rlen) {
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if (delay_ms)
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msleep(delay_ms);
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ret = usb_bulk_msg(d->udev,usb_rcvbulkpipe(d->udev,
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d->props.generic_bulk_ctrl_endpoint),rbuf,rlen,&actlen,
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2000);
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if (ret)
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err("recv bulk message failed: %d",ret);
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else {
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deb_xfer("<<< ");
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debug_dump(rbuf,actlen,deb_xfer);
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}
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}
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mutex_unlock(&d->usb_mutex);
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return ret;
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}
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EXPORT_SYMBOL(dvb_usb_generic_rw);
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int dvb_usb_generic_write(struct dvb_usb_device *d, u8 *buf, u16 len)
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{
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return dvb_usb_generic_rw(d,buf,len,NULL,0,0);
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}
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EXPORT_SYMBOL(dvb_usb_generic_write);
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static void dvb_usb_data_complete(struct usb_data_stream *stream, u8 *buffer, size_t length)
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{
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struct dvb_usb_adapter *adap = stream->user_priv;
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if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB)
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dvb_dmx_swfilter(&adap->demux, buffer, length);
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}
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static void dvb_usb_data_complete_204(struct usb_data_stream *stream, u8 *buffer, size_t length)
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{
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struct dvb_usb_adapter *adap = stream->user_priv;
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if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB)
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dvb_dmx_swfilter_204(&adap->demux, buffer, length);
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}
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int dvb_usb_adapter_stream_init(struct dvb_usb_adapter *adap)
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{
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adap->stream.udev = adap->dev->udev;
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if (adap->props.caps & DVB_USB_ADAP_RECEIVES_204_BYTE_TS)
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adap->stream.complete = dvb_usb_data_complete_204;
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else
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adap->stream.complete = dvb_usb_data_complete;
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adap->stream.user_priv = adap;
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return usb_urb_init(&adap->stream, &adap->props.stream);
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}
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int dvb_usb_adapter_stream_exit(struct dvb_usb_adapter *adap)
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{
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return usb_urb_exit(&adap->stream);
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}
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