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