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