1/* dvb-usb-dvb.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 contains functions for initializing and handling the
7 * linux-dvb API.
8 */
9#include "dvb-usb-common.h"
10
11/* does the complete input transfer handling */
12static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
13{
14	struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
15	int newfeedcount, ret;
16
17	if (adap == NULL)
18		return -ENODEV;
19
20	if ((adap->active_fe < 0) ||
21	    (adap->active_fe >= adap->num_frontends_initialized)) {
22		return -EINVAL;
23	}
24
25	newfeedcount = adap->feedcount + (onoff ? 1 : -1);
26
27	/* stop feed before setting a new pid if there will be no pid anymore */
28	if (newfeedcount == 0) {
29		deb_ts("stop feeding\n");
30		usb_urb_kill(&adap->fe_adap[adap->active_fe].stream);
31
32		if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {
33			ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 0);
34			if (ret < 0) {
35				err("error while stopping stream.");
36				return ret;
37			}
38		}
39	}
40
41	adap->feedcount = newfeedcount;
42
43	/* activate the pid on the device specific pid_filter */
44	deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n",
45		adap->fe_adap[adap->active_fe].pid_filtering ?
46		"yes" : "no", dvbdmxfeed->pid, dvbdmxfeed->pid,
47		dvbdmxfeed->index, onoff ? "on" : "off");
48	if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&
49		adap->fe_adap[adap->active_fe].pid_filtering &&
50		adap->props.fe[adap->active_fe].pid_filter != NULL)
51		adap->props.fe[adap->active_fe].pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid, onoff);
52
53	/* start the feed if this was the first feed and there is still a feed
54	 * for reception.
55	 */
56	if (adap->feedcount == onoff && adap->feedcount > 0) {
57		deb_ts("submitting all URBs\n");
58		usb_urb_submit(&adap->fe_adap[adap->active_fe].stream);
59
60		deb_ts("controlling pid parser\n");
61		if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&
62			adap->props.fe[adap->active_fe].caps &
63			DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF &&
64			adap->props.fe[adap->active_fe].pid_filter_ctrl != NULL) {
65			ret = adap->props.fe[adap->active_fe].pid_filter_ctrl(adap,
66				adap->fe_adap[adap->active_fe].pid_filtering);
67			if (ret < 0) {
68				err("could not handle pid_parser");
69				return ret;
70			}
71		}
72		deb_ts("start feeding\n");
73		if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {
74			ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 1);
75			if (ret < 0) {
76				err("error while enabling fifo.");
77				return ret;
78			}
79		}
80
81	}
82	return 0;
83}
84
85static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
86{
87	deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,dvbdmxfeed->type);
88	return dvb_usb_ctrl_feed(dvbdmxfeed,1);
89}
90
91static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
92{
93	deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type);
94	return dvb_usb_ctrl_feed(dvbdmxfeed,0);
95}
96
97int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)
98{
99	int i;
100	int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name,
101				       adap->dev->owner, &adap->dev->udev->dev,
102				       adapter_nums);
103
104	if (ret < 0) {
105		deb_info("dvb_register_adapter failed: error %d", ret);
106		goto err;
107	}
108	adap->dvb_adap.priv = adap;
109
110	if (adap->dev->props.read_mac_address) {
111		if (adap->dev->props.read_mac_address(adap->dev,adap->dvb_adap.proposed_mac) == 0)
112			info("MAC address: %pM",adap->dvb_adap.proposed_mac);
113		else
114			err("MAC address reading failed.");
115	}
116
117
118	adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
119	adap->demux.priv             = adap;
120
121	adap->demux.filternum        = 0;
122	for (i = 0; i < adap->props.num_frontends; i++) {
123		if (adap->demux.filternum < adap->fe_adap[i].max_feed_count)
124			adap->demux.filternum = adap->fe_adap[i].max_feed_count;
125	}
126	adap->demux.feednum          = adap->demux.filternum;
127	adap->demux.start_feed       = dvb_usb_start_feed;
128	adap->demux.stop_feed        = dvb_usb_stop_feed;
129	adap->demux.write_to_decoder = NULL;
130	if ((ret = dvb_dmx_init(&adap->demux)) < 0) {
131		err("dvb_dmx_init failed: error %d",ret);
132		goto err_dmx;
133	}
134
135	adap->dmxdev.filternum       = adap->demux.filternum;
136	adap->dmxdev.demux           = &adap->demux.dmx;
137	adap->dmxdev.capabilities    = 0;
138	if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) {
139		err("dvb_dmxdev_init failed: error %d",ret);
140		goto err_dmx_dev;
141	}
142
143	if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net,
144						&adap->demux.dmx)) < 0) {
145		err("dvb_net_init failed: error %d",ret);
146		goto err_net_init;
147	}
148
149	adap->state |= DVB_USB_ADAP_STATE_DVB;
150	return 0;
151
152err_net_init:
153	dvb_dmxdev_release(&adap->dmxdev);
154err_dmx_dev:
155	dvb_dmx_release(&adap->demux);
156err_dmx:
157	dvb_unregister_adapter(&adap->dvb_adap);
158err:
159	return ret;
160}
161
162int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap)
163{
164	if (adap->state & DVB_USB_ADAP_STATE_DVB) {
165		deb_info("unregistering DVB part\n");
166		dvb_net_release(&adap->dvb_net);
167		adap->demux.dmx.close(&adap->demux.dmx);
168		dvb_dmxdev_release(&adap->dmxdev);
169		dvb_dmx_release(&adap->demux);
170		dvb_unregister_adapter(&adap->dvb_adap);
171		adap->state &= ~DVB_USB_ADAP_STATE_DVB;
172	}
173	return 0;
174}
175
176static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff)
177{
178	struct dvb_usb_adapter *adap = fe->dvb->priv;
179
180	int ret = (adap->props.frontend_ctrl) ?
181		adap->props.frontend_ctrl(fe, onoff) : 0;
182
183	if (ret < 0) {
184		err("frontend_ctrl request failed");
185		return ret;
186	}
187	if (onoff)
188		adap->active_fe = fe->id;
189
190	return 0;
191}
192
193static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)
194{
195	struct dvb_usb_adapter *adap = fe->dvb->priv;
196
197	dvb_usb_device_power_ctrl(adap->dev, 1);
198
199	dvb_usb_set_active_fe(fe, 1);
200
201	if (adap->fe_adap[fe->id].fe_init)
202		adap->fe_adap[fe->id].fe_init(fe);
203
204	return 0;
205}
206
207static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
208{
209	struct dvb_usb_adapter *adap = fe->dvb->priv;
210
211	if (adap->fe_adap[fe->id].fe_sleep)
212		adap->fe_adap[fe->id].fe_sleep(fe);
213
214	dvb_usb_set_active_fe(fe, 0);
215
216	return dvb_usb_device_power_ctrl(adap->dev, 0);
217}
218
219int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
220{
221	int ret, i;
222
223	/* register all given adapter frontends */
224	for (i = 0; i < adap->props.num_frontends; i++) {
225
226		if (adap->props.fe[i].frontend_attach == NULL) {
227			err("strange: '%s' #%d,%d "
228			    "doesn't want to attach a frontend.",
229			    adap->dev->desc->name, adap->id, i);
230
231			return 0;
232		}
233
234		ret = adap->props.fe[i].frontend_attach(adap);
235		if (ret || adap->fe_adap[i].fe == NULL) {
236			/* only print error when there is no FE at all */
237			if (i == 0)
238				err("no frontend was attached by '%s'",
239					adap->dev->desc->name);
240
241			return 0;
242		}
243
244		adap->fe_adap[i].fe->id = i;
245
246		/* re-assign sleep and wakeup functions */
247		adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init;
248		adap->fe_adap[i].fe->ops.init  = dvb_usb_fe_wakeup;
249		adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep;
250		adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep;
251
252		if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) {
253			err("Frontend %d registration failed.", i);
254			dvb_frontend_detach(adap->fe_adap[i].fe);
255			adap->fe_adap[i].fe = NULL;
256			/* In error case, do not try register more FEs,
257			 * still leaving already registered FEs alive. */
258			if (i == 0)
259				return -ENODEV;
260			else
261				return 0;
262		}
263
264		/* only attach the tuner if the demod is there */
265		if (adap->props.fe[i].tuner_attach != NULL)
266			adap->props.fe[i].tuner_attach(adap);
267
268		adap->num_frontends_initialized++;
269	}
270
271	return 0;
272}
273
274int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)
275{
276	int i = adap->num_frontends_initialized - 1;
277
278	/* unregister all given adapter frontends */
279	for (; i >= 0; i--) {
280		if (adap->fe_adap[i].fe != NULL) {
281			dvb_unregister_frontend(adap->fe_adap[i].fe);
282			dvb_frontend_detach(adap->fe_adap[i].fe);
283		}
284	}
285	adap->num_frontends_initialized = 0;
286
287	return 0;
288}
289