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' doesn'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 }