[PATCH] dvb: Add generalized dvb-usb driver
[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) 2004-5 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 static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
12 {
13         struct dvb_usb_device *d = dvbdmxfeed->demux->priv;
14         int newfeedcount,ret;
15
16         if (d == NULL)
17                 return -ENODEV;
18
19         newfeedcount = d->feedcount + (onoff ? 1 : -1);
20
21         /*
22          * stop feed before setting a new pid if there will be no pid anymore
23          */
24         if (newfeedcount == 0) {
25                 deb_ts("stop feeding\n");
26
27                 if (d->props.streaming_ctrl != NULL)
28                         if ((ret = d->props.streaming_ctrl(d,0)))
29                                 err("error while stopping stream.");
30
31                 dvb_usb_urb_kill(d);
32         }
33
34         d->feedcount = newfeedcount;
35
36         /* activate the pid on the device specific pid_filter */
37         deb_ts("setting pid: %5d %04x at index %d '%s'\n",dvbdmxfeed->pid,dvbdmxfeed->pid,dvbdmxfeed->index,onoff ? "on" : "off");
38         if (d->props.caps & DVB_USB_HAS_PID_FILTER &&
39                 d->pid_filtering &&
40                 d->props.pid_filter != NULL)
41                 d->props.pid_filter(d,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 (d->feedcount == onoff && d->feedcount > 0) {
47
48                 deb_ts("controlling pid parser\n");
49                 if (d->props.caps & DVB_USB_HAS_PID_FILTER &&
50                         d->props.caps & DVB_USB_PID_FILTER_CAN_BE_TURNED_OFF &&
51                         d->props.pid_filter_ctrl != NULL)
52                         if (d->props.pid_filter_ctrl(d,d->pid_filtering) < 0)
53                                 err("could not handle pid_parser");
54
55                 deb_ts("start feeding\n");
56                 if (d->props.streaming_ctrl != NULL)
57                         if (d->props.streaming_ctrl(d,1)) {
58                                 err("error while enabling fifo.");
59                                 return -ENODEV;
60                         }
61
62                 dvb_usb_urb_submit(d);
63         }
64         return 0;
65 }
66
67 static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
68 {
69         deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,dvbdmxfeed->type);
70         return dvb_usb_ctrl_feed(dvbdmxfeed,1);
71 }
72
73 static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
74 {
75         deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type);
76         return dvb_usb_ctrl_feed(dvbdmxfeed,0);
77 }
78
79 int dvb_usb_dvb_init(struct dvb_usb_device *d)
80 {
81         int ret;
82
83         if ((ret = dvb_register_adapter(&d->dvb_adap, d->desc->name,
84                         d->owner)) < 0) {
85                 deb_info("dvb_register_adapter failed: error %d", ret);
86                 goto err;
87         }
88         d->dvb_adap.priv = d;
89
90         if (d->props.read_mac_address) {
91                 if (d->props.read_mac_address(d,d->dvb_adap.proposed_mac) == 0)
92                         info("MAC address: %02x:%02x:%02x:%02x:%02x:%02x",d->dvb_adap.proposed_mac[0],
93                                         d->dvb_adap.proposed_mac[1],d->dvb_adap.proposed_mac[2],
94                                         d->dvb_adap.proposed_mac[3],d->dvb_adap.proposed_mac[4],
95                                         d->dvb_adap.proposed_mac[5]);
96                 else
97                         err("MAC address reading failed.");
98         }
99
100
101         d->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
102         d->demux.priv = d;
103
104         d->demux.feednum = d->demux.filternum = d->max_feed_count;
105         d->demux.start_feed = dvb_usb_start_feed;
106         d->demux.stop_feed  = dvb_usb_stop_feed;
107         d->demux.write_to_decoder = NULL;
108         if ((ret = dvb_dmx_init(&d->demux)) < 0) {
109                 err("dvb_dmx_init failed: error %d",ret);
110                 goto err_dmx;
111         }
112
113         d->dmxdev.filternum = d->demux.filternum;
114         d->dmxdev.demux = &d->demux.dmx;
115         d->dmxdev.capabilities = 0;
116         if ((ret = dvb_dmxdev_init(&d->dmxdev, &d->dvb_adap)) < 0) {
117                 err("dvb_dmxdev_init failed: error %d",ret);
118                 goto err_dmx_dev;
119         }
120
121         dvb_net_init(&d->dvb_adap, &d->dvb_net, &d->demux.dmx);
122
123         goto success;
124 err_dmx_dev:
125         dvb_dmx_release(&d->demux);
126 err_dmx:
127         dvb_unregister_adapter(&d->dvb_adap);
128 err:
129         return ret;
130 success:
131         d->state |= DVB_USB_STATE_DVB;
132         return 0;
133 }
134
135 int dvb_usb_dvb_exit(struct dvb_usb_device *d)
136 {
137         if (d->state & DVB_USB_STATE_DVB) {
138                 deb_info("unregistering DVB part\n");
139                 dvb_net_release(&d->dvb_net);
140                 d->demux.dmx.close(&d->demux.dmx);
141                 dvb_dmxdev_release(&d->dmxdev);
142                 dvb_dmx_release(&d->demux);
143                 dvb_unregister_adapter(&d->dvb_adap);
144                 d->state &= ~DVB_USB_STATE_DVB;
145         }
146         return 0;
147 }
148
149 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)
150 {
151         struct dvb_usb_device *d = fe->dvb->priv;
152
153         if (d->props.power_ctrl)
154                 d->props.power_ctrl(d,1);
155
156         if (d->fe_init)
157                 d->fe_init(fe);
158
159         return 0;
160 }
161
162 static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
163 {
164         struct dvb_usb_device *d = fe->dvb->priv;
165
166         if (d->fe_sleep)
167                 d->fe_sleep(fe);
168
169         if (d->props.power_ctrl)
170                 d->props.power_ctrl(d,0);
171
172         return 0;
173 }
174
175 int dvb_usb_fe_init(struct dvb_usb_device* d)
176 {
177         if (d->props.frontend_attach == NULL) {
178                 err("strange '%s' don't want to attach a frontend.",d->desc->name);
179                 return 0;
180         }
181
182         d->props.frontend_attach(d);
183
184         /* re-assign sleep and wakeup functions */
185         if (d->fe != NULL) {
186                 d->fe_init = d->fe->ops->init;   d->fe->ops->init  = dvb_usb_fe_wakeup;
187                 d->fe_sleep = d->fe->ops->sleep; d->fe->ops->sleep = dvb_usb_fe_sleep;
188
189                 if (dvb_register_frontend(&d->dvb_adap, d->fe)) {
190                         err("Frontend registration failed.");
191                         if (d->fe->ops->release)
192                                 d->fe->ops->release(d->fe);
193                         d->fe = NULL;
194                         return -ENODEV;
195                 }
196         } else
197                 err("no frontend was attached by '%s'",d->desc->name);
198
199         if (d->props.tuner_attach != NULL)
200                 d->props.tuner_attach(d);
201
202         return 0;
203 }
204
205 int dvb_usb_fe_exit(struct dvb_usb_device *d)
206 {
207         if (d->fe != NULL)
208                 dvb_unregister_frontend(d->fe);
209         return 0;
210 }