V4L/DVB (4643): Multi-input patch for DVB-USB device
[linux-2.6.git] / drivers / media / dvb / dvb-usb / dvb-usb-dvb.c
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)
81 {
82         int ret;
83
84         if ((ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name,
85                         adap->dev->owner, &adap->dev->udev->dev)) < 0) {
86                 deb_info("dvb_register_adapter failed: error %d", ret);
87                 goto err;
88         }
89         adap->dvb_adap.priv = adap;
90
91         if (adap->dev->props.read_mac_address) {
92                 if (adap->dev->props.read_mac_address(adap->dev,adap->dvb_adap.proposed_mac) == 0)
93                         info("MAC address: %02x:%02x:%02x:%02x:%02x:%02x",adap->dvb_adap.proposed_mac[0],
94                                         adap->dvb_adap.proposed_mac[1], adap->dvb_adap.proposed_mac[2],
95                                         adap->dvb_adap.proposed_mac[3], adap->dvb_adap.proposed_mac[4],
96                                         adap->dvb_adap.proposed_mac[5]);
97                 else
98                         err("MAC address reading failed.");
99         }
100
101
102         adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
103         adap->demux.priv             = adap;
104
105         adap->demux.feednum          = adap->demux.filternum = adap->max_feed_count;
106         adap->demux.start_feed       = dvb_usb_start_feed;
107         adap->demux.stop_feed        = dvb_usb_stop_feed;
108         adap->demux.write_to_decoder = NULL;
109         if ((ret = dvb_dmx_init(&adap->demux)) < 0) {
110                 err("dvb_dmx_init failed: error %d",ret);
111                 goto err_dmx;
112         }
113
114         adap->dmxdev.filternum       = adap->demux.filternum;
115         adap->dmxdev.demux           = &adap->demux.dmx;
116         adap->dmxdev.capabilities    = 0;
117         if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) {
118                 err("dvb_dmxdev_init failed: error %d",ret);
119                 goto err_dmx_dev;
120         }
121
122         dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx);
123
124         adap->state |= DVB_USB_ADAP_STATE_DVB;
125         return 0;
126
127 err_dmx_dev:
128         dvb_dmx_release(&adap->demux);
129 err_dmx:
130         dvb_unregister_adapter(&adap->dvb_adap);
131 err:
132         return ret;
133 }
134
135 int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap)
136 {
137         if (adap->state & DVB_USB_ADAP_STATE_DVB) {
138                 deb_info("unregistering DVB part\n");
139                 dvb_net_release(&adap->dvb_net);
140                 adap->demux.dmx.close(&adap->demux.dmx);
141                 dvb_dmxdev_release(&adap->dmxdev);
142                 dvb_dmx_release(&adap->demux);
143                 dvb_unregister_adapter(&adap->dvb_adap);
144                 adap->state &= ~DVB_USB_ADAP_STATE_DVB;
145         }
146         return 0;
147 }
148
149 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)
150 {
151         struct dvb_usb_adapter *adap = fe->dvb->priv;
152
153         dvb_usb_device_power_ctrl(adap->dev, 1);
154
155         if (adap->fe_init)
156                 adap->fe_init(fe);
157
158         return 0;
159 }
160
161 static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
162 {
163         struct dvb_usb_adapter *adap = fe->dvb->priv;
164
165         if (adap->fe_sleep)
166                 adap->fe_sleep(fe);
167
168         return dvb_usb_device_power_ctrl(adap->dev, 0);
169 }
170
171 int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
172 {
173         if (adap->props.frontend_attach == NULL) {
174                 err("strange: '%s' #%d doesn't want to attach a frontend.",adap->dev->desc->name, adap->id);
175                 return 0;
176         }
177
178         /* re-assign sleep and wakeup functions */
179         if (adap->props.frontend_attach(adap) == 0 && adap->fe != NULL) {
180                 adap->fe_init  = adap->fe->ops.init;  adap->fe->ops.init  = dvb_usb_fe_wakeup;
181                 adap->fe_sleep = adap->fe->ops.sleep; adap->fe->ops.sleep = dvb_usb_fe_sleep;
182
183                 if (dvb_register_frontend(&adap->dvb_adap, adap->fe)) {
184                         err("Frontend registration failed.");
185                         dvb_frontend_detach(adap->fe);
186                         adap->fe = NULL;
187                         return -ENODEV;
188                 }
189
190                 /* only attach the tuner if the demod is there */
191                 if (adap->props.tuner_attach != NULL)
192                         adap->props.tuner_attach(adap);
193         } else
194                 err("no frontend was attached by '%s'",adap->dev->desc->name);
195
196         return 0;
197 }
198
199 int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)
200 {
201         if (adap->fe != NULL) {
202                 dvb_unregister_frontend(adap->fe);
203                 dvb_frontend_detach(adap->fe);
204         }
205         return 0;
206 }