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         if ((adap->active_fe < 0) ||
  21             (adap->active_fe >= adap->num_frontends_initialized)) {
  22                 return -EINVAL;
  23         }
  24
  25         newfeedcount = adap->feedcount + (onoff ? 1 : -1);
  26
  27         /* stop feed before setting a new pid if there will be no pid anymore */
  28         if (newfeedcount == 0) {
  29                 deb_ts("stop feeding\n");
  30                 usb_urb_kill(&adap->fe_adap[adap->active_fe].stream);
  31
  32                 if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {
  33                         ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 0);
  34                         if (ret < 0) {
  35                                 err("error while stopping stream.");
  36                                 return ret;
  37                         }
  38                 }
  39         }
  40
  41         adap->feedcount = newfeedcount;
  42
  43         /* activate the pid on the device specific pid_filter */
  44         deb_ts("setting pid (%s): %5d %04x at index %d '%s'\n",
  45                 adap->fe_adap[adap->active_fe].pid_filtering ?
  46                 "yes" : "no", dvbdmxfeed->pid, dvbdmxfeed->pid,
  47                 dvbdmxfeed->index, onoff ? "on" : "off");
  48         if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&
  49                 adap->fe_adap[adap->active_fe].pid_filtering &&
  50                 adap->props.fe[adap->active_fe].pid_filter != NULL)
  51                 adap->props.fe[adap->active_fe].pid_filter(adap, dvbdmxfeed->index, dvbdmxfeed->pid, onoff);
  52
  53         /* start the feed if this was the first feed and there is still a feed
  54          * for reception.
  55          */
  56         if (adap->feedcount == onoff && adap->feedcount > 0) {
  57                 deb_ts("submitting all URBs\n");
  58                 usb_urb_submit(&adap->fe_adap[adap->active_fe].stream);
  59
  60                 deb_ts("controlling pid parser\n");
  61                 if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&
  62                         adap->props.fe[adap->active_fe].caps &
  63                         DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF &&
  64                         adap->props.fe[adap->active_fe].pid_filter_ctrl != NULL) {
  65                         ret = adap->props.fe[adap->active_fe].pid_filter_ctrl(adap,
  66                                 adap->fe_adap[adap->active_fe].pid_filtering);
  67                         if (ret < 0) {
  68                                 err("could not handle pid_parser");
  69                                 return ret;
  70                         }
  71                 }
  72                 deb_ts("start feeding\n");
  73                 if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {
  74                         ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 1);
  75                         if (ret < 0) {
  76                                 err("error while enabling fifo.");
  77                                 return ret;
  78                         }
  79                 }
  80
  81         }
  82         return 0;
  83 }
  84
  85 static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
  86 {
  87         deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,dvbdmxfeed->type);
  88         return dvb_usb_ctrl_feed(dvbdmxfeed,1);
  89 }
  90
  91 static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
  92 {
  93         deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type);
  94         return dvb_usb_ctrl_feed(dvbdmxfeed,0);
  95 }
  96
  97 int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)
  98 {
  99         int i;
 100         int ret = dvb_register_adapter(&adap->dvb_adap, adap->dev->desc->name,
 101                                        adap->dev->owner, &adap->dev->udev->dev,
 102                                        adapter_nums);
 103
 104         if (ret < 0) {
 105                 deb_info("dvb_register_adapter failed: error %d", ret);
 106                 goto err;
 107         }
 108         adap->dvb_adap.priv = adap;
 109         adap->dvb_adap.fe_ioctl_override = adap->props.fe_ioctl_override;
 110
 111         if (adap->dev->props.read_mac_address) {
 112                 if (adap->dev->props.read_mac_address(adap->dev,adap->dvb_adap.proposed_mac) == 0)
 113                         info("MAC address: %pM",adap->dvb_adap.proposed_mac);
 114                 else
 115                         err("MAC address reading failed.");
 116         }
 117
 118
 119         adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
 120         adap->demux.priv             = adap;
 121
 122         adap->demux.filternum        = 0;
 123         for (i = 0; i < adap->props.num_frontends; i++) {
 124                 if (adap->demux.filternum < adap->fe_adap[i].max_feed_count)
 125                         adap->demux.filternum = adap->fe_adap[i].max_feed_count;
 126         }
 127         adap->demux.feednum          = adap->demux.filternum;
 128         adap->demux.start_feed       = dvb_usb_start_feed;
 129         adap->demux.stop_feed        = dvb_usb_stop_feed;
 130         adap->demux.write_to_decoder = NULL;
 131         if ((ret = dvb_dmx_init(&adap->demux)) < 0) {
 132                 err("dvb_dmx_init failed: error %d",ret);
 133                 goto err_dmx;
 134         }
 135
 136         adap->dmxdev.filternum       = adap->demux.filternum;
 137         adap->dmxdev.demux           = &adap->demux.dmx;
 138         adap->dmxdev.capabilities    = 0;
 139         if ((ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap)) < 0) {
 140                 err("dvb_dmxdev_init failed: error %d",ret);
 141                 goto err_dmx_dev;
 142         }
 143
 144         if ((ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net,
 145                                                 &adap->demux.dmx)) < 0) {
 146                 err("dvb_net_init failed: error %d",ret);
 147                 goto err_net_init;
 148         }
 149
 150         adap->state |= DVB_USB_ADAP_STATE_DVB;
 151         return 0;
 152
 153 err_net_init:
 154         dvb_dmxdev_release(&adap->dmxdev);
 155 err_dmx_dev:
 156         dvb_dmx_release(&adap->demux);
 157 err_dmx:
 158         dvb_unregister_adapter(&adap->dvb_adap);
 159 err:
 160         return ret;
 161 }
 162
 163 int dvb_usb_adapter_dvb_exit(struct dvb_usb_adapter *adap)
 164 {
 165         if (adap->state & DVB_USB_ADAP_STATE_DVB) {
 166                 deb_info("unregistering DVB part\n");
 167                 dvb_net_release(&adap->dvb_net);
 168                 adap->demux.dmx.close(&adap->demux.dmx);
 169                 dvb_dmxdev_release(&adap->dmxdev);
 170                 dvb_dmx_release(&adap->demux);
 171                 dvb_unregister_adapter(&adap->dvb_adap);
 172                 adap->state &= ~DVB_USB_ADAP_STATE_DVB;
 173         }
 174         return 0;
 175 }
 176
 177 static int dvb_usb_set_active_fe(struct dvb_frontend *fe, int onoff)
 178 {
 179         struct dvb_usb_adapter *adap = fe->dvb->priv;
 180
 181         int ret = (adap->props.frontend_ctrl) ?
 182                 adap->props.frontend_ctrl(fe, onoff) : 0;
 183
 184         if (ret < 0) {
 185                 err("frontend_ctrl request failed");
 186                 return ret;
 187         }
 188         if (onoff)
 189                 adap->active_fe = fe->id;
 190
 191         return 0;
 192 }
 193
 194 static int dvb_usb_fe_wakeup(struct dvb_frontend *fe)
 195 {
 196         struct dvb_usb_adapter *adap = fe->dvb->priv;
 197
 198         dvb_usb_device_power_ctrl(adap->dev, 1);
 199
 200         dvb_usb_set_active_fe(fe, 1);
 201
 202         if (adap->fe_adap[fe->id].fe_init)
 203                 adap->fe_adap[fe->id].fe_init(fe);
 204
 205         return 0;
 206 }
 207
 208 static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
 209 {
 210         struct dvb_usb_adapter *adap = fe->dvb->priv;
 211
 212         if (adap->fe_adap[fe->id].fe_sleep)
 213                 adap->fe_adap[fe->id].fe_sleep(fe);
 214
 215         dvb_usb_set_active_fe(fe, 0);
 216
 217         return dvb_usb_device_power_ctrl(adap->dev, 0);
 218 }
 219
 220 int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
 221 {
 222         int ret, i;
 223
 224         /* register all given adapter frontends */
 225         for (i = 0; i < adap->props.num_frontends; i++) {
 226
 227                 if (adap->props.fe[i].frontend_attach == NULL) {
 228                         err("strange: '%s' #%d,%d "
 229                             "doesn't want to attach a frontend.",
 230                             adap->dev->desc->name, adap->id, i);
 231
 232                         return 0;
 233                 }
 234
 235                 ret = adap->props.fe[i].frontend_attach(adap);
 236                 if (ret || adap->fe_adap[i].fe == NULL) {
 237                         /* only print error when there is no FE at all */
 238                         if (i == 0)
 239                                 err("no frontend was attached by '%s'",
 240                                         adap->dev->desc->name);
 241
 242                         return 0;
 243                 }
 244
 245                 adap->fe_adap[i].fe->id = i;
 246
 247                 /* re-assign sleep and wakeup functions */
 248                 adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init;
 249                 adap->fe_adap[i].fe->ops.init  = dvb_usb_fe_wakeup;
 250                 adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep;
 251                 adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep;
 252
 253                 if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) {
 254                         err("Frontend %d registration failed.", i);
 255                         dvb_frontend_detach(adap->fe_adap[i].fe);
 256                         adap->fe_adap[i].fe = NULL;
 257                         /* In error case, do not try register more FEs,
 258                          * still leaving already registered FEs alive. */
 259                         if (i == 0)
 260                                 return -ENODEV;
 261                         else
 262                                 return 0;
 263                 }
 264
 265                 /* only attach the tuner if the demod is there */
 266                 if (adap->props.fe[i].tuner_attach != NULL)
 267                         adap->props.fe[i].tuner_attach(adap);
 268
 269                 adap->num_frontends_initialized++;
 270         }
 271
 272         return 0;
 273 }
 274
 275 int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)
 276 {
 277         int i = adap->num_frontends_initialized - 1;
 278
 279         /* unregister all given adapter frontends */
 280         for (; i >= 0; i--) {
 281                 if (adap->fe_adap[i].fe != NULL) {
 282                         dvb_unregister_frontend(adap->fe_adap[i].fe);
 283                         dvb_frontend_detach(adap->fe_adap[i].fe);
 284                 }
 285         }
 286         adap->num_frontends_initialized = 0;
 287
 288         return 0;
 289 }