[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / dvb / dvb-usb / dvb-usb-urb.c

/* 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 || wbuf == NULL || wlen == 0)
		return -EINVAL;

	if (d->props.generic_bulk_ctrl_endpoint == 0) {
		err("endpoint for generic control not specified.");
		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);
}

static void dvb_usb_data_complete_204(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_204(&adap->demux, buffer, length);
}

int dvb_usb_adapter_stream_init(struct dvb_usb_adapter *adap)
{
	adap->stream.udev      = adap->dev->udev;
	if (adap->props.caps & DVB_USB_ADAP_RECEIVES_204_BYTE_TS)
		adap->stream.complete = dvb_usb_data_complete_204;
	else
	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);
}
Commit	Line	Data
776338e1 JS	1	/* dvb-usb-urb.c is part of the DVB USB library.
776338e1 JS	2	*
4d43e13f	3	* Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
776338e1 JS	4	* see dvb-usb-init.c for copyright information.
776338e1 JS	5	*
4d43e13f	6	* This file keeps functions for initializing and handling the
776338e1 JS	7	* USB and URB stuff.
	8	*/
	9	#include "dvb-usb-common.h"
	10
	11	int 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
8268c8f5 DB	16	if (!d \|\| wbuf == NULL \|\| wlen == 0)
	17	return -EINVAL;
	18
776338e1 JS	19	if (d->props.generic_bulk_ctrl_endpoint == 0) {
	20	err("endpoint for generic control not specified.");
	21	return -EINVAL;
	22	}
	23
3593cab5	24	if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
776338e1 JS	25	return ret;
776338e1 JS	26
7f5fee57	27	deb_xfer(">>> ");
776338e1 JS	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,
e161f817	32	2000);
776338e1 JS	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),rbuf,rlen,&actlen,
e161f817	46	2000);
776338e1 JS	47
	48	if (ret)
	49	err("recv bulk message failed: %d",ret);
7f5fee57 PB	50	else {
7f5fee57 PB	51	deb_xfer("<<< ");
776338e1	52	debug_dump(rbuf,actlen,deb_xfer);
7f5fee57	53	}
776338e1 JS	54	}
776338e1 JS	55
3593cab5	56	mutex_unlock(&d->usb_mutex);
776338e1 JS	57	return ret;
	58	}
	59	EXPORT_SYMBOL(dvb_usb_generic_rw);
	60
	61	int dvb_usb_generic_write(struct dvb_usb_device d, u8 buf, u16 len)
	62	{
	63	return dvb_usb_generic_rw(d,buf,len,NULL,0,0);
	64	}
	65	EXPORT_SYMBOL(dvb_usb_generic_write);
	66
4d43e13f	67	static void dvb_usb_data_complete(struct usb_data_stream stream, u8 buffer, size_t length)
7f5fee57	68	{
4d43e13f PB	69	struct dvb_usb_adapter *adap = stream->user_priv;
	70	if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB)
	71	dvb_dmx_swfilter(&adap->demux, buffer, length);
776338e1 JS	72	}
776338e1 JS	73
0540c496 PB	74	static void dvb_usb_data_complete_204(struct usb_data_stream stream, u8 buffer, size_t length)
	75	{
	76	struct dvb_usb_adapter *adap = stream->user_priv;
	77	if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB)
	78	dvb_dmx_swfilter_204(&adap->demux, buffer, length);
	79	}
	80
4d43e13f	81	int dvb_usb_adapter_stream_init(struct dvb_usb_adapter *adap)
7f5fee57	82	{
4d43e13f	83	adap->stream.udev = adap->dev->udev;
0540c496 PB	84	if (adap->props.caps & DVB_USB_ADAP_RECEIVES_204_BYTE_TS)
	85	adap->stream.complete = dvb_usb_data_complete_204;
	86	else
4d43e13f PB	87	adap->stream.complete = dvb_usb_data_complete;
	88	adap->stream.user_priv = adap;
	89	return usb_urb_init(&adap->stream, &adap->props.stream);
776338e1 JS	90	}
776338e1 JS	91
4d43e13f	92	int dvb_usb_adapter_stream_exit(struct dvb_usb_adapter *adap)
776338e1	93	{
4d43e13f	94	return usb_urb_exit(&adap->stream);
776338e1	95	}