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                         ret = adap->props.streaming_ctrl(adap, 0);
  29                         if (ret < 0) {
  30                                 err("error while stopping stream.");
  31                                 return ret;
  32                         }
  33                 }
  34         }
  35
  36         adap->feedcount = newfeedcount;
  37
  38         /* activate the pid on the device specific pid_filter */
  39         deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n",adap->pid_filtering ?
  40                 "yes" : "no", dvbdmxfeed->pid,dvbdmxfeed->pid,dvbdmxfeed->index,onoff ?
  41                 "on" : "off");
  42         if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER &&
  43                 adap->pid_filtering &&
  44                 adap->props.pid_filter != NULL)
  45                 adap->props.pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid,onoff);
  46
  47         /* start the feed if this was the first feed and there is still a feed
  48          * for reception.
  49          */
  50         if (adap->feedcount == onoff && adap->feedcount > 0) {
  51                 deb_ts("submitting all URBs\n");
  52                 usb_urb_submit(&adap->stream);
  53
  54                 deb_ts("controlling pid parser\n");
  55                 if (adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER &&
  56                         adap->props.caps &
  57                         DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF &&
  58                         adap->props.pid_filter_ctrl != NULL) {
  59                         ret = adap->props.pid_filter_ctrl(adap,
  60                                 adap->pid_filtering);
  61                         if (ret < 0) {
  62                                 err("could not handle pid_parser");
  63                                 return ret;
  64                         }
  65                 }
  66                 deb_ts("start feeding\n");
  67                 if (adap->props.streaming_ctrl != NULL) {
  68                         ret = adap->props.streaming_ctrl(adap, 1);
  69                         if (ret < 0) {
  70                                 err("error while enabling fifo.");
  71                                 return ret;
  72                         }
  73                 }
  74
  75         }
  76         return 0;
  77 }
  78
  79 static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
  80 {
  81         deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,dvbdmxfeed->type);
  82         return dvb_usb_ctrl_feed(dvbdmxfeed,1);
  83 }
  84
  85 static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
  86 {
  87         deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type);
  88         return dvb_usb_ctrl_feed(dvbdmxfeed,0);
  89 }
  90
  91 int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)
  92 {
  93         int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name,
  94                                        adap->dev->owner, &adap->dev->udev->dev,
  95                                        adapter_nums);
  96
  97         if (ret < 0) {
  98                 deb_info("dvb_register_adapter failed: error %d", ret);
  99                 goto err;
 100         }
 101         adap->dvb_adap.priv = adap;
 102         adap->dvb_adap.fe_ioctl_override = adap->props.fe_ioctl_override;
 103
 104         if (adap->dev->props.read_mac_address) {
 105                 if (adap->dev->props.read_mac_address(adap->dev,adap->dvb_adap.proposed_mac) == 0)
 106                         info("MAC address: %pM",adap->dvb_adap.proposed_mac);
 107                 else
 108                         err("MAC address reading failed.");
 109         }
 110
 111
 112         adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
 113         adap->demux.priv             = adap;
 114
 115         adap->demux.feednum          = adap->demux.filternum = adap->max_feed_count;
 116         adap->demux.start_feed       = dvb_usb_start_feed;
 117         adap->demux.stop_feed        = dvb_usb_stop_feed;
 118         adap->demux.write_to_decoder = NULL;
 119         if ((ret = dvb_dmx_init(&adap->demux)) < 0) {
 120                 err("dvb_dmx_init failed: error %d",ret);
 121                 goto err_dmx;
 122         }
 123
 124         adap->dmxdev.filternum       = adap->demux.filternum;
 125         adap->dmxdev.demux           = &adap->demux.dmx;
 126         adap->dmxdev.capabilities    = 0;
 127         if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) {
 128                 err("dvb_dmxdev_init failed: error %d",ret);
 129                 goto err_dmx_dev;
 130         }
 131
 132         dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx);
 133
 134         adap->state |= DVB_USB_ADAP_STATE_DVB;
 135         return 0;
 136
 137 err_dmx_dev:
 138         dvb_dmx_release(&adap->demux);
 139 err_dmx:
 140         dvb_unregister_adapter(&adap->dvb_adap);
 141 err:
 142         return ret;
 143 }
 144
 145 int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap)
 146 {
 147         if (adap->state & DVB_USB_ADAP_STATE_DVB) {
 148                 deb_info("unregistering DVB part\n");
 149                 dvb_net_release(&adap->dvb_net);
 150                 adap->demux.dmx.close(&adap->demux.dmx);
 151                 dvb_dmxdev_release(&adap->dmxdev);
 152                 dvb_dmx_release(&adap->demux);
 153                 dvb_unregister_adapter(&adap->dvb_adap);
 154                 adap->state &= ~DVB_USB_ADAP_STATE_DVB;
 155         }
 156         return 0;
 157 }
 158
 159 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)
 160 {
 161         struct dvb_usb_adapter *adap = fe->dvb->priv;
 162
 163         dvb_usb_device_power_ctrl(adap->dev, 1);
 164
 165         if (adap->fe_init)
 166                 adap->fe_init(fe);
 167
 168         return 0;
 169 }
 170
 171 static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
 172 {
 173         struct dvb_usb_adapter *adap = fe->dvb->priv;
 174
 175         if (adap->fe_sleep)
 176                 adap->fe_sleep(fe);
 177
 178         return dvb_usb_device_power_ctrl(adap->dev, 0);
 179 }
 180
 181 int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
 182 {
 183         if (adap->props.frontend_attach == NULL) {
 184                 err("strange: '%s' #%d doesn't want to attach a frontend.",adap->dev->desc->name, adap->id);
 185                 return 0;
 186         }
 187
 188         /* re-assign sleep and wakeup functions */
 189         if (adap->props.frontend_attach(adap) == 0 && adap->fe != NULL) {
 190                 adap->fe_init  = adap->fe->ops.init;  adap->fe->ops.init  = dvb_usb_fe_wakeup;
 191                 adap->fe_sleep = adap->fe->ops.sleep; adap->fe->ops.sleep = dvb_usb_fe_sleep;
 192
 193                 if (dvb_register_frontend(&adap->dvb_adap, adap->fe)) {
 194                         err("Frontend registration failed.");
 195                         dvb_frontend_detach(adap->fe);
 196                         adap->fe = NULL;
 197                         return -ENODEV;
 198                 }
 199
 200                 /* only attach the tuner if the demod is there */
 201                 if (adap->props.tuner_attach != NULL)
 202                         adap->props.tuner_attach(adap);
 203         } else
 204                 err("no frontend was attached by '%s'",adap->dev->desc->name);
 205
 206         return 0;
 207 }
 208
 209 int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)
 210 {
 211         if (adap->fe != NULL) {
 212                 dvb_unregister_frontend(adap->fe);
 213                 dvb_frontend_detach(adap->fe);
 214         }
 215         return 0;
 216 }