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

/* dvb-usb-dvb.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 contains functions for initializing and handling the
 * linux-dvb API.
 */
#include "dvb-usb-common.h"

/* does the complete input transfer handling */
static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
{
	struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
	int newfeedcount, ret;

	if (adap == NULL)
		return -ENODEV;

	newfeedcount = adap->feedcount + (onoff ? 1 : -1);

	/* stop feed before setting a new pid if there will be no pid anymore */
	if (newfeedcount == 0) {
		deb_ts("stop feeding\n");
		usb_urb_kill(&adap->stream);

		if (adap->props.streaming_ctrl != NULL) {
			ret = adap->props.streaming_ctrl(adap, 0);
			if (ret < 0) {
				err("error while stopping stream.");
				return ret;
			}
		}
	}

	adap->feedcount = newfeedcount;

	/* activate the pid on the device specific pid_filter */
	deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n",adap->pid_filtering ?
		"yes" : "no", dvbdmxfeed->pid,dvbdmxfeed->pid,dvbdmxfeed->index,onoff ?
		"on" : "off");
	if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER &&
		adap->pid_filtering &&
		adap->props.pid_filter != NULL)
		adap->props.pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid,onoff);

	/* start the feed if this was the first feed and there is still a feed
	 * for reception.
	 */
	if (adap->feedcount == onoff && adap->feedcount > 0) {
		deb_ts("submitting all URBs\n");
		usb_urb_submit(&adap->stream);

		deb_ts("controlling pid parser\n");
		if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER &&
			adap->props.caps &
			DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF &&
			adap->props.pid_filter_ctrl != NULL) {
			ret = adap->props.pid_filter_ctrl(adap,
				adap->pid_filtering);
			if (ret < 0) {
				err("could not handle pid_parser");
				return ret;
			}
		}
		deb_ts("start feeding\n");
		if (adap->props.streaming_ctrl != NULL) {
			ret = adap->props.streaming_ctrl(adap, 1);
			if (ret < 0) {
				err("error while enabling fifo.");
				return ret;
			}
		}

	}
	return 0;
}

static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
	deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,dvbdmxfeed->type);
	return dvb_usb_ctrl_feed(dvbdmxfeed,1);
}

static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
	deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type);
	return dvb_usb_ctrl_feed(dvbdmxfeed,0);
}

int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)
{
	int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name,
				       adap->dev->owner, &adap->dev->udev->dev,
				       adapter_nums);

	if (ret < 0) {
		deb_info("dvb_register_adapter failed: error %d", ret);
		goto err;
	}
	adap->dvb_adap.priv = adap;
	adap->dvb_adap.fe_ioctl_override = adap->props.fe_ioctl_override;

	if (adap->dev->props.read_mac_address) {
		if (adap->dev->props.read_mac_address(adap->dev,adap->dvb_adap.proposed_mac) == 0)
			info("MAC address: %pM",adap->dvb_adap.proposed_mac);
		else
			err("MAC address reading failed.");
	}


	adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
	adap->demux.priv             = adap;

	adap->demux.feednum          = adap->demux.filternum = adap->max_feed_count;
	adap->demux.start_feed       = dvb_usb_start_feed;
	adap->demux.stop_feed        = dvb_usb_stop_feed;
	adap->demux.write_to_decoder = NULL;
	if ((ret = dvb_dmx_init(&adap->demux)) < 0) {
		err("dvb_dmx_init failed: error %d",ret);
		goto err_dmx;
	}

	adap->dmxdev.filternum       = adap->demux.filternum;
	adap->dmxdev.demux           = &adap->demux.dmx;
	adap->dmxdev.capabilities    = 0;
	if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) {
		err("dvb_dmxdev_init failed: error %d",ret);
		goto err_dmx_dev;
	}

	dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx);

	adap->state |= DVB_USB_ADAP_STATE_DVB;
	return 0;

err_dmx_dev:
	dvb_dmx_release(&adap->demux);
err_dmx:
	dvb_unregister_adapter(&adap->dvb_adap);
err:
	return ret;
}

int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap)
{
	if (adap->state & DVB_USB_ADAP_STATE_DVB) {
		deb_info("unregistering DVB part\n");
		dvb_net_release(&adap->dvb_net);
		adap->demux.dmx.close(&adap->demux.dmx);
		dvb_dmxdev_release(&adap->dmxdev);
		dvb_dmx_release(&adap->demux);
		dvb_unregister_adapter(&adap->dvb_adap);
		adap->state &= ~DVB_USB_ADAP_STATE_DVB;
	}
	return 0;
}

static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)
{
	struct dvb_usb_adapter *adap = fe->dvb->priv;

	dvb_usb_device_power_ctrl(adap->dev, 1);

	if (adap->fe_init)
		adap->fe_init(fe);

	return 0;
}

static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
{
	struct dvb_usb_adapter *adap = fe->dvb->priv;

	if (adap->fe_sleep)
		adap->fe_sleep(fe);

	return dvb_usb_device_power_ctrl(adap->dev, 0);
}

int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
{
	if (adap->props.frontend_attach == NULL) {
		err("strange: '%s' #%d doesn't want to attach a frontend.",adap->dev->desc->name, adap->id);
		return 0;
	}

	/* re-assign sleep and wakeup functions */
	if (adap->props.frontend_attach(adap) == 0 && adap->fe != NULL) {
		adap->fe_init  = adap->fe->ops.init;  adap->fe->ops.init  = dvb_usb_fe_wakeup;
		adap->fe_sleep = adap->fe->ops.sleep; adap->fe->ops.sleep = dvb_usb_fe_sleep;

		if (dvb_register_frontend(&adap->dvb_adap, adap->fe)) {
			err("Frontend registration failed.");
			dvb_frontend_detach(adap->fe);
			adap->fe = NULL;
			return -ENODEV;
		}

		/* only attach the tuner if the demod is there */
		if (adap->props.tuner_attach != NULL)
			adap->props.tuner_attach(adap);
	} else
		err("no frontend was attached by '%s'",adap->dev->desc->name);

	return 0;
}

int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)
{
	if (adap->fe != NULL) {
		dvb_unregister_frontend(adap->fe);
		dvb_frontend_detach(adap->fe);
	}
	return 0;
}
Commit	Line	Data
776338e1 JS	1	/* dvb-usb-dvb.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.
	5	*
	6	* This file contains functions for initializing and handling the
	7	* linux-dvb API.
	8	*/
	9	#include "dvb-usb-common.h"
	10
4d43e13f	11	/* does the complete input transfer handling */
776338e1 JS	12	static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
776338e1 JS	13	{
4d43e13f	14	struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
c8b7ced3	15	int newfeedcount, ret;
776338e1	16
4d43e13f	17	if (adap == NULL)
776338e1 JS	18	return -ENODEV;
776338e1 JS	19
4d43e13f	20	newfeedcount = adap->feedcount + (onoff ? 1 : -1);
776338e1	21
4d43e13f	22	/* stop feed before setting a new pid if there will be no pid anymore */
776338e1 JS	23	if (newfeedcount == 0) {
776338e1 JS	24	deb_ts("stop feeding\n");
4d43e13f	25	usb_urb_kill(&adap->stream);
776338e1	26
c8b7ced3 MP	27	if (adap->props.streaming_ctrl != NULL) {
c8b7ced3 MP	28	ret = adap->props.streaming_ctrl(adap, 0);
dca6b74b MP	29	if (ret < 0) {
dca6b74b MP	30	err("error while stopping stream.");
c8b7ced3	31	return ret;
dca6b74b	32	}
c8b7ced3	33	}
776338e1 JS	34	}
776338e1 JS	35
4d43e13f	36	adap->feedcount = newfeedcount;
776338e1 JS	37
776338e1 JS	38	/* activate the pid on the device specific pid_filter */
4d43e13f PB	39	deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n",adap->pid_filtering ?
	40	"yes" : "no", dvbdmxfeed->pid,dvbdmxfeed->pid,dvbdmxfeed->index,onoff ?
	41	"on" : "off");
	42	if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER &&
	43	adap->pid_filtering &&
	44	adap->props.pid_filter != NULL)
	45	adap->props.pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid,onoff);
776338e1 JS	46
	47	/* start the feed if this was the first feed and there is still a feed
	48	* for reception.
	49	*/
4d43e13f	50	if (adap->feedcount == onoff && adap->feedcount > 0) {
8126fdbc	51	deb_ts("submitting all URBs\n");
4d43e13f	52	usb_urb_submit(&adap->stream);
776338e1 JS	53
776338e1 JS	54	deb_ts("controlling pid parser\n");
4d43e13f	55	if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER &&
c8b7ced3 MP	56	adap->props.caps &
	57	DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF &&
	58	adap->props.pid_filter_ctrl != NULL) {
	59	ret = adap->props.pid_filter_ctrl(adap,
	60	adap->pid_filtering);
	61	if (ret < 0) {
776338e1	62	err("could not handle pid_parser");
c8b7ced3 MP	63	return ret;
	64	}
	65	}
776338e1	66	deb_ts("start feeding\n");
c8b7ced3 MP	67	if (adap->props.streaming_ctrl != NULL) {
	68	ret = adap->props.streaming_ctrl(adap, 1);
	69	if (ret < 0) {
776338e1	70	err("error while enabling fifo.");
c8b7ced3	71	return ret;
776338e1	72	}
c8b7ced3	73	}
776338e1	74
776338e1 JS	75	}
	76	return 0;
	77	}
	78
	79	static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
	80	{
	81	deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,dvbdmxfeed->type);
	82	return dvb_usb_ctrl_feed(dvbdmxfeed,1);
	83	}
	84
	85	static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
	86	{
	87	deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type);
	88	return dvb_usb_ctrl_feed(dvbdmxfeed,0);
	89	}
	90
78e92006	91	int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter adap, short adapter_nums)
776338e1	92	{
78e92006 JG	93	int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name,
	94	adap->dev->owner, &adap->dev->udev->dev,
	95	adapter_nums);
776338e1	96
78e92006	97	if (ret < 0) {
776338e1 JS	98	deb_info("dvb_register_adapter failed: error %d", ret);
	99	goto err;
	100	}
4d43e13f	101	adap->dvb_adap.priv = adap;
94d98314	102	adap->dvb_adap.fe_ioctl_override = adap->props.fe_ioctl_override;
4d43e13f PB	103
	104	if (adap->dev->props.read_mac_address) {
	105	if (adap->dev->props.read_mac_address(adap->dev,adap->dvb_adap.proposed_mac) == 0)
7c510e4b	106	info("MAC address: %pM",adap->dvb_adap.proposed_mac);
776338e1 JS	107	else
	108	err("MAC address reading failed.");
	109	}
	110
	111
4d43e13f PB	112	adap->demux.dmx.capabilities = DMX_TS_FILTERING \| DMX_SECTION_FILTERING;
4d43e13f PB	113	adap->demux.priv = adap;
776338e1	114
4d43e13f PB	115	adap->demux.feednum = adap->demux.filternum = adap->max_feed_count;
	116	adap->demux.start_feed = dvb_usb_start_feed;
	117	adap->demux.stop_feed = dvb_usb_stop_feed;
	118	adap->demux.write_to_decoder = NULL;
	119	if ((ret = dvb_dmx_init(&adap->demux)) < 0) {
776338e1 JS	120	err("dvb_dmx_init failed: error %d",ret);
	121	goto err_dmx;
	122	}
	123
4d43e13f PB	124	adap->dmxdev.filternum = adap->demux.filternum;
	125	adap->dmxdev.demux = &adap->demux.dmx;
	126	adap->dmxdev.capabilities = 0;
	127	if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) {
776338e1 JS	128	err("dvb_dmxdev_init failed: error %d",ret);
	129	goto err_dmx_dev;
	130	}
	131
4d43e13f	132	dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx);
776338e1	133
4d43e13f	134	adap->state \|= DVB_USB_ADAP_STATE_DVB;
8397703e TP	135	return 0;
8397703e TP	136
776338e1	137	err_dmx_dev:
4d43e13f	138	dvb_dmx_release(&adap->demux);
776338e1	139	err_dmx:
4d43e13f	140	dvb_unregister_adapter(&adap->dvb_adap);
776338e1 JS	141	err:
776338e1 JS	142	return ret;
776338e1 JS	143	}
776338e1 JS	144
4d43e13f	145	int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap)
776338e1	146	{
4d43e13f	147	if (adap->state & DVB_USB_ADAP_STATE_DVB) {
776338e1	148	deb_info("unregistering DVB part\n");
4d43e13f PB	149	dvb_net_release(&adap->dvb_net);
	150	adap->demux.dmx.close(&adap->demux.dmx);
	151	dvb_dmxdev_release(&adap->dmxdev);
	152	dvb_dmx_release(&adap->demux);
	153	dvb_unregister_adapter(&adap->dvb_adap);
	154	adap->state &= ~DVB_USB_ADAP_STATE_DVB;
776338e1 JS	155	}
	156	return 0;
	157	}
	158
	159	static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)
	160	{
4d43e13f	161	struct dvb_usb_adapter *adap = fe->dvb->priv;
776338e1	162
4d43e13f	163	dvb_usb_device_power_ctrl(adap->dev, 1);
776338e1	164
4d43e13f PB	165	if (adap->fe_init)
4d43e13f PB	166	adap->fe_init(fe);
776338e1 JS	167
	168	return 0;
	169	}
	170
	171	static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
	172	{
4d43e13f	173	struct dvb_usb_adapter *adap = fe->dvb->priv;
776338e1	174
4d43e13f PB	175	if (adap->fe_sleep)
4d43e13f PB	176	adap->fe_sleep(fe);
776338e1	177
4d43e13f	178	return dvb_usb_device_power_ctrl(adap->dev, 0);
776338e1 JS	179	}
776338e1 JS	180
4d43e13f	181	int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
776338e1	182	{
4d43e13f PB	183	if (adap->props.frontend_attach == NULL) {
4d43e13f PB	184	err("strange: '%s' #%d doesn't want to attach a frontend.",adap->dev->desc->name, adap->id);
776338e1 JS	185	return 0;
	186	}
	187
776338e1	188	/* re-assign sleep and wakeup functions */
4d43e13f PB	189	if (adap->props.frontend_attach(adap) == 0 && adap->fe != NULL) {
	190	adap->fe_init = adap->fe->ops.init; adap->fe->ops.init = dvb_usb_fe_wakeup;
	191	adap->fe_sleep = adap->fe->ops.sleep; adap->fe->ops.sleep = dvb_usb_fe_sleep;
776338e1	192
4d43e13f	193	if (dvb_register_frontend(&adap->dvb_adap, adap->fe)) {
776338e1	194	err("Frontend registration failed.");
4d43e13f PB	195	dvb_frontend_detach(adap->fe);
4d43e13f PB	196	adap->fe = NULL;
776338e1 JS	197	return -ENODEV;
776338e1 JS	198	}
5a19f312 PB	199
5a19f312 PB	200	/* only attach the tuner if the demod is there */
4d43e13f PB	201	if (adap->props.tuner_attach != NULL)
4d43e13f PB	202	adap->props.tuner_attach(adap);
776338e1	203	} else
4d43e13f	204	err("no frontend was attached by '%s'",adap->dev->desc->name);
776338e1	205
776338e1 JS	206	return 0;
	207	}
	208
4d43e13f	209	int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)
776338e1	210	{
4d43e13f PB	211	if (adap->fe != NULL) {
	212	dvb_unregister_frontend(adap->fe);
	213	dvb_frontend_detach(adap->fe);
4e66c97c	214	}
776338e1 JS	215	return 0;
776338e1 JS	216	}