drivers/media/usb/dvb-usb-v2/dvb_usb_core.c

   1 /*
   2  * DVB USB framework
   3  *
   4  * Copyright (C) 2004-6 Patrick Boettcher <patrick.boettcher@posteo.de>
   5  * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
   6  *
   7  *    This program is free software; you can redistribute it and/or modify
   8  *    it under the terms of the GNU General Public License as published by
   9  *    the Free Software Foundation; either version 2 of the License, or
  10  *    (at your option) any later version.
  11  *
  12  *    This program is distributed in the hope that it will be useful,
  13  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *    GNU General Public License for more details.
  16  *
  17  *    You should have received a copy of the GNU General Public License along
  18  *    with this program; if not, write to the Free Software Foundation, Inc.,
  19  *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "dvb_usb_common.h"
  23 #include <media/media-device.h>
  24
  25 static int dvb_usbv2_disable_rc_polling;
  26 module_param_named(disable_rc_polling, dvb_usbv2_disable_rc_polling, int, 0644);
  27 MODULE_PARM_DESC(disable_rc_polling,
  28                 "disable remote control polling (default: 0)");
  29 static int dvb_usb_force_pid_filter_usage;
  30 module_param_named(force_pid_filter_usage, dvb_usb_force_pid_filter_usage,
  31                 int, 0444);
  32 MODULE_PARM_DESC(force_pid_filter_usage,
  33                 "force all DVB USB devices to use a PID filter, if any (default: 0)");
  34
  35 static int dvb_usbv2_download_firmware(struct dvb_usb_device *d,
  36                 const char *name)
  37 {
  38         int ret;
  39         const struct firmware *fw;
  40         dev_dbg(&d->udev->dev, "%s:\n", __func__);
  41
  42         if (!d->props->download_firmware) {
  43                 ret = -EINVAL;
  44                 goto err;
  45         }
  46
  47         ret = reject_firmware(&fw, name, &d->udev->dev);
  48         if (ret < 0) {
  49                 dev_err(&d->udev->dev,
  50                                 "%s: Did not find the firmware file '%s' (status %d). /*(DEBLOBBED)*/\n",
  51                                 KBUILD_MODNAME, name, ret);
  52                 goto err;
  53         }
  54
  55         dev_info(&d->udev->dev, "%s: downloading firmware from file '%s'\n",
  56                         KBUILD_MODNAME, name);
  57
  58         ret = d->props->download_firmware(d, fw);
  59         release_firmware(fw);
  60         if (ret < 0)
  61                 goto err;
  62
  63         return ret;
  64 err:
  65         dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
  66         return ret;
  67 }
  68
  69 static int dvb_usbv2_i2c_init(struct dvb_usb_device *d)
  70 {
  71         int ret;
  72         dev_dbg(&d->udev->dev, "%s:\n", __func__);
  73
  74         if (!d->props->i2c_algo)
  75                 return 0;
  76
  77         strlcpy(d->i2c_adap.name, d->name, sizeof(d->i2c_adap.name));
  78         d->i2c_adap.algo = d->props->i2c_algo;
  79         d->i2c_adap.dev.parent = &d->udev->dev;
  80         i2c_set_adapdata(&d->i2c_adap, d);
  81
  82         ret = i2c_add_adapter(&d->i2c_adap);
  83         if (ret < 0) {
  84                 d->i2c_adap.algo = NULL;
  85                 goto err;
  86         }
  87
  88         return 0;
  89 err:
  90         dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
  91         return ret;
  92 }
  93
  94 static int dvb_usbv2_i2c_exit(struct dvb_usb_device *d)
  95 {
  96         dev_dbg(&d->udev->dev, "%s:\n", __func__);
  97
  98         if (d->i2c_adap.algo)
  99                 i2c_del_adapter(&d->i2c_adap);
 100
 101         return 0;
 102 }
 103
 104 #if IS_ENABLED(CONFIG_RC_CORE)
 105 static void dvb_usb_read_remote_control(struct work_struct *work)
 106 {
 107         struct dvb_usb_device *d = container_of(work,
 108                         struct dvb_usb_device, rc_query_work.work);
 109         int ret;
 110
 111         /*
 112          * When the parameter has been set to 1 via sysfs while the
 113          * driver was running, or when bulk mode is enabled after IR init.
 114          */
 115         if (dvb_usbv2_disable_rc_polling || d->rc.bulk_mode) {
 116                 d->rc_polling_active = false;
 117                 return;
 118         }
 119
 120         ret = d->rc.query(d);
 121         if (ret < 0) {
 122                 dev_err(&d->udev->dev, "%s: rc.query() failed=%d\n",
 123                                 KBUILD_MODNAME, ret);
 124                 d->rc_polling_active = false;
 125                 return; /* stop polling */
 126         }
 127
 128         schedule_delayed_work(&d->rc_query_work,
 129                         msecs_to_jiffies(d->rc.interval));
 130 }
 131
 132 static int dvb_usbv2_remote_init(struct dvb_usb_device *d)
 133 {
 134         int ret;
 135         struct rc_dev *dev;
 136         dev_dbg(&d->udev->dev, "%s:\n", __func__);
 137
 138         if (dvb_usbv2_disable_rc_polling || !d->props->get_rc_config)
 139                 return 0;
 140
 141         d->rc.map_name = d->rc_map;
 142         ret = d->props->get_rc_config(d, &d->rc);
 143         if (ret < 0)
 144                 goto err;
 145
 146         /* disable rc when there is no keymap defined */
 147         if (!d->rc.map_name)
 148                 return 0;
 149
 150         dev = rc_allocate_device(d->rc.driver_type);
 151         if (!dev) {
 152                 ret = -ENOMEM;
 153                 goto err;
 154         }
 155
 156         dev->dev.parent = &d->udev->dev;
 157         dev->device_name = d->name;
 158         usb_make_path(d->udev, d->rc_phys, sizeof(d->rc_phys));
 159         strlcat(d->rc_phys, "/ir0", sizeof(d->rc_phys));
 160         dev->input_phys = d->rc_phys;
 161         usb_to_input_id(d->udev, &dev->input_id);
 162         dev->driver_name = d->props->driver_name;
 163         dev->map_name = d->rc.map_name;
 164         dev->allowed_protocols = d->rc.allowed_protos;
 165         dev->change_protocol = d->rc.change_protocol;
 166         dev->priv = d;
 167
 168         ret = rc_register_device(dev);
 169         if (ret < 0) {
 170                 rc_free_device(dev);
 171                 goto err;
 172         }
 173
 174         d->rc_dev = dev;
 175
 176         /* start polling if needed */
 177         if (d->rc.query && !d->rc.bulk_mode) {
 178                 /* initialize a work queue for handling polling */
 179                 INIT_DELAYED_WORK(&d->rc_query_work,
 180                                 dvb_usb_read_remote_control);
 181                 dev_info(&d->udev->dev,
 182                                 "%s: schedule remote query interval to %d msecs\n",
 183                                 KBUILD_MODNAME, d->rc.interval);
 184                 schedule_delayed_work(&d->rc_query_work,
 185                                 msecs_to_jiffies(d->rc.interval));
 186                 d->rc_polling_active = true;
 187         }
 188
 189         return 0;
 190 err:
 191         dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
 192         return ret;
 193 }
 194
 195 static int dvb_usbv2_remote_exit(struct dvb_usb_device *d)
 196 {
 197         dev_dbg(&d->udev->dev, "%s:\n", __func__);
 198
 199         if (d->rc_dev) {
 200                 cancel_delayed_work_sync(&d->rc_query_work);
 201                 rc_unregister_device(d->rc_dev);
 202                 d->rc_dev = NULL;
 203         }
 204
 205         return 0;
 206 }
 207 #else
 208         #define dvb_usbv2_remote_init(args...) 0
 209         #define dvb_usbv2_remote_exit(args...)
 210 #endif
 211
 212 static void dvb_usb_data_complete(struct usb_data_stream *stream, u8 *buf,
 213                 size_t len)
 214 {
 215         struct dvb_usb_adapter *adap = stream->user_priv;
 216         dvb_dmx_swfilter(&adap->demux, buf, len);
 217 }
 218
 219 static void dvb_usb_data_complete_204(struct usb_data_stream *stream, u8 *buf,
 220                 size_t len)
 221 {
 222         struct dvb_usb_adapter *adap = stream->user_priv;
 223         dvb_dmx_swfilter_204(&adap->demux, buf, len);
 224 }
 225
 226 static void dvb_usb_data_complete_raw(struct usb_data_stream *stream, u8 *buf,
 227                 size_t len)
 228 {
 229         struct dvb_usb_adapter *adap = stream->user_priv;
 230         dvb_dmx_swfilter_raw(&adap->demux, buf, len);
 231 }
 232
 233 static int dvb_usbv2_adapter_stream_init(struct dvb_usb_adapter *adap)
 234 {
 235         dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
 236                         adap->id);
 237
 238         adap->stream.udev = adap_to_d(adap)->udev;
 239         adap->stream.user_priv = adap;
 240         adap->stream.complete = dvb_usb_data_complete;
 241
 242         return usb_urb_initv2(&adap->stream, &adap->props->stream);
 243 }
 244
 245 static int dvb_usbv2_adapter_stream_exit(struct dvb_usb_adapter *adap)
 246 {
 247         dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
 248                         adap->id);
 249
 250         return usb_urb_exitv2(&adap->stream);
 251 }
 252
 253 static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
 254 {
 255         struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
 256         struct dvb_usb_device *d = adap_to_d(adap);
 257         int ret = 0;
 258         struct usb_data_stream_properties stream_props;
 259         dev_dbg(&d->udev->dev,
 260                         "%s: adap=%d active_fe=%d feed_type=%d setting pid [%s]: %04x (%04d) at index %d\n",
 261                         __func__, adap->id, adap->active_fe, dvbdmxfeed->type,
 262                         adap->pid_filtering ? "yes" : "no", dvbdmxfeed->pid,
 263                         dvbdmxfeed->pid, dvbdmxfeed->index);
 264
 265         /* wait init is done */
 266         wait_on_bit(&adap->state_bits, ADAP_INIT, TASK_UNINTERRUPTIBLE);
 267
 268         if (adap->active_fe == -1)
 269                 return -EINVAL;
 270
 271         /* skip feed setup if we are already feeding */
 272         if (adap->feed_count++ > 0)
 273                 goto skip_feed_start;
 274
 275         /* set 'streaming' status bit */
 276         set_bit(ADAP_STREAMING, &adap->state_bits);
 277
 278         /* resolve input and output streaming parameters */
 279         if (d->props->get_stream_config) {
 280                 memcpy(&stream_props, &adap->props->stream,
 281                                 sizeof(struct usb_data_stream_properties));
 282                 ret = d->props->get_stream_config(adap->fe[adap->active_fe],
 283                                 &adap->ts_type, &stream_props);
 284                 if (ret)
 285                         dev_err(&d->udev->dev,
 286                                         "%s: get_stream_config() failed=%d\n",
 287                                         KBUILD_MODNAME, ret);
 288         } else {
 289                 stream_props = adap->props->stream;
 290         }
 291
 292         switch (adap->ts_type) {
 293         case DVB_USB_FE_TS_TYPE_204:
 294                 adap->stream.complete = dvb_usb_data_complete_204;
 295                 break;
 296         case DVB_USB_FE_TS_TYPE_RAW:
 297                 adap->stream.complete = dvb_usb_data_complete_raw;
 298                 break;
 299         case DVB_USB_FE_TS_TYPE_188:
 300         default:
 301                 adap->stream.complete = dvb_usb_data_complete;
 302                 break;
 303         }
 304
 305         /* submit USB streaming packets */
 306         usb_urb_submitv2(&adap->stream, &stream_props);
 307
 308         /* enable HW PID filter */
 309         if (adap->pid_filtering && adap->props->pid_filter_ctrl) {
 310                 ret = adap->props->pid_filter_ctrl(adap, 1);
 311                 if (ret)
 312                         dev_err(&d->udev->dev,
 313                                         "%s: pid_filter_ctrl() failed=%d\n",
 314                                         KBUILD_MODNAME, ret);
 315         }
 316
 317         /* ask device to start streaming */
 318         if (d->props->streaming_ctrl) {
 319                 ret = d->props->streaming_ctrl(adap->fe[adap->active_fe], 1);
 320                 if (ret)
 321                         dev_err(&d->udev->dev,
 322                                         "%s: streaming_ctrl() failed=%d\n",
 323                                         KBUILD_MODNAME, ret);
 324         }
 325 skip_feed_start:
 326
 327         /* add PID to device HW PID filter */
 328         if (adap->pid_filtering && adap->props->pid_filter) {
 329                 ret = adap->props->pid_filter(adap, dvbdmxfeed->index,
 330                                 dvbdmxfeed->pid, 1);
 331                 if (ret)
 332                         dev_err(&d->udev->dev, "%s: pid_filter() failed=%d\n",
 333                                         KBUILD_MODNAME, ret);
 334         }
 335
 336         if (ret)
 337                 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
 338         return ret;
 339 }
 340
 341 static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 342 {
 343         struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
 344         struct dvb_usb_device *d = adap_to_d(adap);
 345         int ret = 0;
 346         dev_dbg(&d->udev->dev,
 347                         "%s: adap=%d active_fe=%d feed_type=%d setting pid [%s]: %04x (%04d) at index %d\n",
 348                         __func__, adap->id, adap->active_fe, dvbdmxfeed->type,
 349                         adap->pid_filtering ? "yes" : "no", dvbdmxfeed->pid,
 350                         dvbdmxfeed->pid, dvbdmxfeed->index);
 351
 352         if (adap->active_fe == -1)
 353                 return -EINVAL;
 354
 355         /* remove PID from device HW PID filter */
 356         if (adap->pid_filtering && adap->props->pid_filter) {
 357                 ret = adap->props->pid_filter(adap, dvbdmxfeed->index,
 358                                 dvbdmxfeed->pid, 0);
 359                 if (ret)
 360                         dev_err(&d->udev->dev, "%s: pid_filter() failed=%d\n",
 361                                         KBUILD_MODNAME, ret);
 362         }
 363
 364         /* we cannot stop streaming until last PID is removed */
 365         if (--adap->feed_count > 0)
 366                 goto skip_feed_stop;
 367
 368         /* ask device to stop streaming */
 369         if (d->props->streaming_ctrl) {
 370                 ret = d->props->streaming_ctrl(adap->fe[adap->active_fe], 0);
 371                 if (ret)
 372                         dev_err(&d->udev->dev,
 373                                         "%s: streaming_ctrl() failed=%d\n",
 374                                         KBUILD_MODNAME, ret);
 375         }
 376
 377         /* disable HW PID filter */
 378         if (adap->pid_filtering && adap->props->pid_filter_ctrl) {
 379                 ret = adap->props->pid_filter_ctrl(adap, 0);
 380                 if (ret)
 381                         dev_err(&d->udev->dev,
 382                                         "%s: pid_filter_ctrl() failed=%d\n",
 383                                         KBUILD_MODNAME, ret);
 384         }
 385
 386         /* kill USB streaming packets */
 387         usb_urb_killv2(&adap->stream);
 388
 389         /* clear 'streaming' status bit */
 390         clear_bit(ADAP_STREAMING, &adap->state_bits);
 391         smp_mb__after_atomic();
 392         wake_up_bit(&adap->state_bits, ADAP_STREAMING);
 393 skip_feed_stop:
 394
 395         if (ret)
 396                 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
 397         return ret;
 398 }
 399
 400 static int dvb_usbv2_media_device_init(struct dvb_usb_adapter *adap)
 401 {
 402 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
 403         struct media_device *mdev;
 404         struct dvb_usb_device *d = adap_to_d(adap);
 405         struct usb_device *udev = d->udev;
 406
 407         mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
 408         if (!mdev)
 409                 return -ENOMEM;
 410
 411         media_device_usb_init(mdev, udev, d->name);
 412
 413         dvb_register_media_controller(&adap->dvb_adap, mdev);
 414
 415         dev_info(&d->udev->dev, "media controller created\n");
 416 #endif
 417         return 0;
 418 }
 419
 420 static int dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap)
 421 {
 422 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
 423         return media_device_register(adap->dvb_adap.mdev);
 424 #else
 425         return 0;
 426 #endif
 427 }
 428
 429 static void dvb_usbv2_media_device_unregister(struct dvb_usb_adapter *adap)
 430 {
 431 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
 432
 433         if (!adap->dvb_adap.mdev)
 434                 return;
 435
 436         media_device_unregister(adap->dvb_adap.mdev);
 437         media_device_cleanup(adap->dvb_adap.mdev);
 438         kfree(adap->dvb_adap.mdev);
 439         adap->dvb_adap.mdev = NULL;
 440
 441 #endif
 442 }
 443
 444 static int dvb_usbv2_adapter_dvb_init(struct dvb_usb_adapter *adap)
 445 {
 446         int ret;
 447         struct dvb_usb_device *d = adap_to_d(adap);
 448
 449         dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, adap->id);
 450
 451         ret = dvb_register_adapter(&adap->dvb_adap, d->name, d->props->owner,
 452                         &d->udev->dev, d->props->adapter_nr);
 453         if (ret < 0) {
 454                 dev_dbg(&d->udev->dev, "%s: dvb_register_adapter() failed=%d\n",
 455                                 __func__, ret);
 456                 goto err_dvb_register_adapter;
 457         }
 458
 459         adap->dvb_adap.priv = adap;
 460
 461         ret = dvb_usbv2_media_device_init(adap);
 462         if (ret < 0) {
 463                 dev_dbg(&d->udev->dev, "%s: dvb_usbv2_media_device_init() failed=%d\n",
 464                                 __func__, ret);
 465                 goto err_dvb_register_mc;
 466         }
 467
 468         if (d->props->read_mac_address) {
 469                 ret = d->props->read_mac_address(adap,
 470                                 adap->dvb_adap.proposed_mac);
 471                 if (ret < 0)
 472                         goto err_dvb_dmx_init;
 473
 474                 dev_info(&d->udev->dev, "%s: MAC address: %pM\n",
 475                                 KBUILD_MODNAME, adap->dvb_adap.proposed_mac);
 476         }
 477
 478         adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
 479         adap->demux.priv             = adap;
 480         adap->demux.filternum        = 0;
 481         adap->demux.filternum        = adap->max_feed_count;
 482         adap->demux.feednum          = adap->demux.filternum;
 483         adap->demux.start_feed       = dvb_usb_start_feed;
 484         adap->demux.stop_feed        = dvb_usb_stop_feed;
 485         adap->demux.write_to_decoder = NULL;
 486         ret = dvb_dmx_init(&adap->demux);
 487         if (ret < 0) {
 488                 dev_err(&d->udev->dev, "%s: dvb_dmx_init() failed=%d\n",
 489                                 KBUILD_MODNAME, ret);
 490                 goto err_dvb_dmx_init;
 491         }
 492
 493         adap->dmxdev.filternum       = adap->demux.filternum;
 494         adap->dmxdev.demux           = &adap->demux.dmx;
 495         adap->dmxdev.capabilities    = 0;
 496         ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap);
 497         if (ret < 0) {
 498                 dev_err(&d->udev->dev, "%s: dvb_dmxdev_init() failed=%d\n",
 499                                 KBUILD_MODNAME, ret);
 500                 goto err_dvb_dmxdev_init;
 501         }
 502
 503         ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx);
 504         if (ret < 0) {
 505                 dev_err(&d->udev->dev, "%s: dvb_net_init() failed=%d\n",
 506                                 KBUILD_MODNAME, ret);
 507                 goto err_dvb_net_init;
 508         }
 509
 510         return 0;
 511 err_dvb_net_init:
 512         dvb_dmxdev_release(&adap->dmxdev);
 513 err_dvb_dmxdev_init:
 514         dvb_dmx_release(&adap->demux);
 515 err_dvb_dmx_init:
 516         dvb_usbv2_media_device_unregister(adap);
 517 err_dvb_register_mc:
 518         dvb_unregister_adapter(&adap->dvb_adap);
 519 err_dvb_register_adapter:
 520         adap->dvb_adap.priv = NULL;
 521         return ret;
 522 }
 523
 524 static int dvb_usbv2_adapter_dvb_exit(struct dvb_usb_adapter *adap)
 525 {
 526         dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
 527                         adap->id);
 528
 529         if (adap->dvb_adap.priv) {
 530                 dvb_net_release(&adap->dvb_net);
 531                 adap->demux.dmx.close(&adap->demux.dmx);
 532                 dvb_dmxdev_release(&adap->dmxdev);
 533                 dvb_dmx_release(&adap->demux);
 534                 dvb_unregister_adapter(&adap->dvb_adap);
 535         }
 536
 537         return 0;
 538 }
 539
 540 static int dvb_usbv2_device_power_ctrl(struct dvb_usb_device *d, int onoff)
 541 {
 542         int ret;
 543
 544         if (onoff)
 545                 d->powered++;
 546         else
 547                 d->powered--;
 548
 549         if (d->powered == 0 || (onoff && d->powered == 1)) {
 550                 /* when switching from 1 to 0 or from 0 to 1 */
 551                 dev_dbg(&d->udev->dev, "%s: power=%d\n", __func__, onoff);
 552                 if (d->props->power_ctrl) {
 553                         ret = d->props->power_ctrl(d, onoff);
 554                         if (ret < 0)
 555                                 goto err;
 556                 }
 557         }
 558
 559         return 0;
 560 err:
 561         dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
 562         return ret;
 563 }
 564
 565 static int dvb_usb_fe_init(struct dvb_frontend *fe)
 566 {
 567         int ret;
 568         struct dvb_usb_adapter *adap = fe->dvb->priv;
 569         struct dvb_usb_device *d = adap_to_d(adap);
 570         dev_dbg(&d->udev->dev, "%s: adap=%d fe=%d\n", __func__, adap->id,
 571                         fe->id);
 572
 573         if (!adap->suspend_resume_active) {
 574                 adap->active_fe = fe->id;
 575                 set_bit(ADAP_INIT, &adap->state_bits);
 576         }
 577
 578         ret = dvb_usbv2_device_power_ctrl(d, 1);
 579         if (ret < 0)
 580                 goto err;
 581
 582         if (d->props->frontend_ctrl) {
 583                 ret = d->props->frontend_ctrl(fe, 1);
 584                 if (ret < 0)
 585                         goto err;
 586         }
 587
 588         if (adap->fe_init[fe->id]) {
 589                 ret = adap->fe_init[fe->id](fe);
 590                 if (ret < 0)
 591                         goto err;
 592         }
 593 err:
 594         if (!adap->suspend_resume_active) {
 595                 clear_bit(ADAP_INIT, &adap->state_bits);
 596                 smp_mb__after_atomic();
 597                 wake_up_bit(&adap->state_bits, ADAP_INIT);
 598         }
 599
 600         dev_dbg(&d->udev->dev, "%s: ret=%d\n", __func__, ret);
 601         return ret;
 602 }
 603
 604 static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
 605 {
 606         int ret;
 607         struct dvb_usb_adapter *adap = fe->dvb->priv;
 608         struct dvb_usb_device *d = adap_to_d(adap);
 609         dev_dbg(&d->udev->dev, "%s: adap=%d fe=%d\n", __func__, adap->id,
 610                         fe->id);
 611
 612         if (!adap->suspend_resume_active) {
 613                 set_bit(ADAP_SLEEP, &adap->state_bits);
 614                 wait_on_bit(&adap->state_bits, ADAP_STREAMING,
 615                                 TASK_UNINTERRUPTIBLE);
 616         }
 617
 618         if (adap->fe_sleep[fe->id]) {
 619                 ret = adap->fe_sleep[fe->id](fe);
 620                 if (ret < 0)
 621                         goto err;
 622         }
 623
 624         if (d->props->frontend_ctrl) {
 625                 ret = d->props->frontend_ctrl(fe, 0);
 626                 if (ret < 0)
 627                         goto err;
 628         }
 629
 630         ret = dvb_usbv2_device_power_ctrl(d, 0);
 631
 632 err:
 633         if (!adap->suspend_resume_active) {
 634                 adap->active_fe = -1;
 635                 clear_bit(ADAP_SLEEP, &adap->state_bits);
 636                 smp_mb__after_atomic();
 637                 wake_up_bit(&adap->state_bits, ADAP_SLEEP);
 638         }
 639
 640         dev_dbg(&d->udev->dev, "%s: ret=%d\n", __func__, ret);
 641         return ret;
 642 }
 643
 644 static int dvb_usbv2_adapter_frontend_init(struct dvb_usb_adapter *adap)
 645 {
 646         int ret, i, count_registered = 0;
 647         struct dvb_usb_device *d = adap_to_d(adap);
 648         dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, adap->id);
 649
 650         memset(adap->fe, 0, sizeof(adap->fe));
 651         adap->active_fe = -1;
 652
 653         if (d->props->frontend_attach) {
 654                 ret = d->props->frontend_attach(adap);
 655                 if (ret < 0) {
 656                         dev_dbg(&d->udev->dev,
 657                                         "%s: frontend_attach() failed=%d\n",
 658                                         __func__, ret);
 659                         goto err_dvb_frontend_detach;
 660                 }
 661         } else {
 662                 dev_dbg(&d->udev->dev, "%s: frontend_attach() do not exists\n",
 663                                 __func__);
 664                 ret = 0;
 665                 goto err;
 666         }
 667
 668         for (i = 0; i < MAX_NO_OF_FE_PER_ADAP && adap->fe[i]; i++) {
 669                 adap->fe[i]->id = i;
 670                 /* re-assign sleep and wakeup functions */
 671                 adap->fe_init[i] = adap->fe[i]->ops.init;
 672                 adap->fe[i]->ops.init = dvb_usb_fe_init;
 673                 adap->fe_sleep[i] = adap->fe[i]->ops.sleep;
 674                 adap->fe[i]->ops.sleep = dvb_usb_fe_sleep;
 675
 676                 ret = dvb_register_frontend(&adap->dvb_adap, adap->fe[i]);
 677                 if (ret < 0) {
 678                         dev_err(&d->udev->dev,
 679                                         "%s: frontend%d registration failed\n",
 680                                         KBUILD_MODNAME, i);
 681                         goto err_dvb_unregister_frontend;
 682                 }
 683
 684                 count_registered++;
 685         }
 686
 687         if (d->props->tuner_attach) {
 688                 ret = d->props->tuner_attach(adap);
 689                 if (ret < 0) {
 690                         dev_dbg(&d->udev->dev, "%s: tuner_attach() failed=%d\n",
 691                                         __func__, ret);
 692                         goto err_dvb_unregister_frontend;
 693                 }
 694         }
 695
 696         ret = dvb_create_media_graph(&adap->dvb_adap, true);
 697         if (ret < 0)
 698                 goto err_dvb_unregister_frontend;
 699
 700         ret = dvb_usbv2_media_device_register(adap);
 701
 702         return ret;
 703
 704 err_dvb_unregister_frontend:
 705         for (i = count_registered - 1; i >= 0; i--)
 706                 dvb_unregister_frontend(adap->fe[i]);
 707
 708 err_dvb_frontend_detach:
 709         for (i = MAX_NO_OF_FE_PER_ADAP - 1; i >= 0; i--) {
 710                 if (adap->fe[i]) {
 711                         dvb_frontend_detach(adap->fe[i]);
 712                         adap->fe[i] = NULL;
 713                 }
 714         }
 715
 716 err:
 717         dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
 718         return ret;
 719 }
 720
 721 static int dvb_usbv2_adapter_frontend_exit(struct dvb_usb_adapter *adap)
 722 {
 723         int ret, i;
 724         struct dvb_usb_device *d = adap_to_d(adap);
 725
 726         dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, adap->id);
 727
 728         for (i = MAX_NO_OF_FE_PER_ADAP - 1; i >= 0; i--) {
 729                 if (adap->fe[i]) {
 730                         dvb_unregister_frontend(adap->fe[i]);
 731                         dvb_frontend_detach(adap->fe[i]);
 732                 }
 733         }
 734
 735         if (d->props->tuner_detach) {
 736                 ret = d->props->tuner_detach(adap);
 737                 if (ret < 0) {
 738                         dev_dbg(&d->udev->dev, "%s: tuner_detach() failed=%d\n",
 739                                         __func__, ret);
 740                 }
 741         }
 742
 743         if (d->props->frontend_detach) {
 744                 ret = d->props->frontend_detach(adap);
 745                 if (ret < 0) {
 746                         dev_dbg(&d->udev->dev,
 747                                         "%s: frontend_detach() failed=%d\n",
 748                                         __func__, ret);
 749                 }
 750         }
 751
 752         return 0;
 753 }
 754
 755 static int dvb_usbv2_adapter_init(struct dvb_usb_device *d)
 756 {
 757         struct dvb_usb_adapter *adap;
 758         int ret, i, adapter_count;
 759
 760         /* resolve adapter count */
 761         adapter_count = d->props->num_adapters;
 762         if (d->props->get_adapter_count) {
 763                 ret = d->props->get_adapter_count(d);
 764                 if (ret < 0)
 765                         goto err;
 766
 767                 adapter_count = ret;
 768         }
 769
 770         for (i = 0; i < adapter_count; i++) {
 771                 adap = &d->adapter[i];
 772                 adap->id = i;
 773                 adap->props = &d->props->adapter[i];
 774
 775                 /* speed - when running at FULL speed we need a HW PID filter */
 776                 if (d->udev->speed == USB_SPEED_FULL &&
 777                                 !(adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER)) {
 778                         dev_err(&d->udev->dev,
 779                                         "%s: this USB2.0 device cannot be run on a USB1.1 port (it lacks a hardware PID filter)\n",
 780                                         KBUILD_MODNAME);
 781                         ret = -ENODEV;
 782                         goto err;
 783                 } else if ((d->udev->speed == USB_SPEED_FULL &&
 784                                 adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER) ||
 785                                 (adap->props->caps & DVB_USB_ADAP_NEED_PID_FILTERING)) {
 786                         dev_info(&d->udev->dev,
 787                                         "%s: will use the device's hardware PID filter (table count: %d)\n",
 788                                         KBUILD_MODNAME,
 789                                         adap->props->pid_filter_count);
 790                         adap->pid_filtering  = 1;
 791                         adap->max_feed_count = adap->props->pid_filter_count;
 792                 } else {
 793                         dev_info(&d->udev->dev,
 794                                         "%s: will pass the complete MPEG2 transport stream to the software demuxer\n",
 795                                         KBUILD_MODNAME);
 796                         adap->pid_filtering  = 0;
 797                         adap->max_feed_count = 255;
 798                 }
 799
 800                 if (!adap->pid_filtering && dvb_usb_force_pid_filter_usage &&
 801                                 adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER) {
 802                         dev_info(&d->udev->dev,
 803                                         "%s: PID filter enabled by module option\n",
 804                                         KBUILD_MODNAME);
 805                         adap->pid_filtering  = 1;
 806                         adap->max_feed_count = adap->props->pid_filter_count;
 807                 }
 808
 809                 ret = dvb_usbv2_adapter_stream_init(adap);
 810                 if (ret)
 811                         goto err;
 812
 813                 ret = dvb_usbv2_adapter_dvb_init(adap);
 814                 if (ret)
 815                         goto err;
 816
 817                 ret = dvb_usbv2_adapter_frontend_init(adap);
 818                 if (ret)
 819                         goto err;
 820
 821                 /* use exclusive FE lock if there is multiple shared FEs */
 822                 if (adap->fe[1])
 823                         adap->dvb_adap.mfe_shared = 1;
 824         }
 825
 826         return 0;
 827 err:
 828         dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
 829         return ret;
 830 }
 831
 832 static int dvb_usbv2_adapter_exit(struct dvb_usb_device *d)
 833 {
 834         int i;
 835         dev_dbg(&d->udev->dev, "%s:\n", __func__);
 836
 837         for (i = MAX_NO_OF_ADAPTER_PER_DEVICE - 1; i >= 0; i--) {
 838                 if (d->adapter[i].props) {
 839                         dvb_usbv2_adapter_dvb_exit(&d->adapter[i]);
 840                         dvb_usbv2_adapter_stream_exit(&d->adapter[i]);
 841                         dvb_usbv2_adapter_frontend_exit(&d->adapter[i]);
 842                         dvb_usbv2_media_device_unregister(&d->adapter[i]);
 843                 }
 844         }
 845
 846         return 0;
 847 }
 848
 849 /* general initialization functions */
 850 static int dvb_usbv2_exit(struct dvb_usb_device *d)
 851 {
 852         dev_dbg(&d->udev->dev, "%s:\n", __func__);
 853
 854         dvb_usbv2_remote_exit(d);
 855         dvb_usbv2_adapter_exit(d);
 856         dvb_usbv2_i2c_exit(d);
 857
 858         return 0;
 859 }
 860
 861 static int dvb_usbv2_init(struct dvb_usb_device *d)
 862 {
 863         int ret;
 864         dev_dbg(&d->udev->dev, "%s:\n", __func__);
 865
 866         dvb_usbv2_device_power_ctrl(d, 1);
 867
 868         if (d->props->read_config) {
 869                 ret = d->props->read_config(d);
 870                 if (ret < 0)
 871                         goto err;
 872         }
 873
 874         ret = dvb_usbv2_i2c_init(d);
 875         if (ret < 0)
 876                 goto err;
 877
 878         ret = dvb_usbv2_adapter_init(d);
 879         if (ret < 0)
 880                 goto err;
 881
 882         if (d->props->init) {
 883                 ret = d->props->init(d);
 884                 if (ret < 0)
 885                         goto err;
 886         }
 887
 888         ret = dvb_usbv2_remote_init(d);
 889         if (ret < 0)
 890                 goto err;
 891
 892         dvb_usbv2_device_power_ctrl(d, 0);
 893
 894         return 0;
 895 err:
 896         dvb_usbv2_device_power_ctrl(d, 0);
 897         dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
 898         return ret;
 899 }
 900
 901 int dvb_usbv2_probe(struct usb_interface *intf,
 902                 const struct usb_device_id *id)
 903 {
 904         int ret;
 905         struct dvb_usb_device *d;
 906         struct usb_device *udev = interface_to_usbdev(intf);
 907         struct dvb_usb_driver_info *driver_info =
 908                         (struct dvb_usb_driver_info *) id->driver_info;
 909
 910         dev_dbg(&udev->dev, "%s: bInterfaceNumber=%d\n", __func__,
 911                         intf->cur_altsetting->desc.bInterfaceNumber);
 912
 913         if (!id->driver_info) {
 914                 dev_err(&udev->dev, "%s: driver_info failed\n", KBUILD_MODNAME);
 915                 ret = -ENODEV;
 916                 goto err;
 917         }
 918
 919         d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
 920         if (!d) {
 921                 dev_err(&udev->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
 922                 ret = -ENOMEM;
 923                 goto err;
 924         }
 925
 926         d->intf = intf;
 927         d->name = driver_info->name;
 928         d->rc_map = driver_info->rc_map;
 929         d->udev = udev;
 930         d->props = driver_info->props;
 931
 932         if (intf->cur_altsetting->desc.bInterfaceNumber !=
 933                         d->props->bInterfaceNumber) {
 934                 ret = -ENODEV;
 935                 goto err_kfree_d;
 936         }
 937
 938         mutex_init(&d->usb_mutex);
 939         mutex_init(&d->i2c_mutex);
 940
 941         if (d->props->size_of_priv) {
 942                 d->priv = kzalloc(d->props->size_of_priv, GFP_KERNEL);
 943                 if (!d->priv) {
 944                         dev_err(&d->udev->dev, "%s: kzalloc() failed\n",
 945                                         KBUILD_MODNAME);
 946                         ret = -ENOMEM;
 947                         goto err_kfree_d;
 948                 }
 949         }
 950
 951         if (d->props->probe) {
 952                 ret = d->props->probe(d);
 953                 if (ret)
 954                         goto err_kfree_priv;
 955         }
 956
 957         if (d->props->identify_state) {
 958                 const char *name = NULL;
 959                 ret = d->props->identify_state(d, &name);
 960                 if (ret == 0) {
 961                         ;
 962                 } else if (ret == COLD) {
 963                         dev_info(&d->udev->dev,
 964                                         "%s: found a '%s' in cold state\n",
 965                                         KBUILD_MODNAME, d->name);
 966
 967                         if (!name)
 968                                 name = d->props->firmware;
 969
 970                         ret = dvb_usbv2_download_firmware(d, name);
 971                         if (ret == 0) {
 972                                 /* device is warm, continue initialization */
 973                                 ;
 974                         } else if (ret == RECONNECTS_USB) {
 975                                 /*
 976                                  * USB core will call disconnect() and then
 977                                  * probe() as device reconnects itself from the
 978                                  * USB bus. disconnect() will release all driver
 979                                  * resources and probe() is called for 'new'
 980                                  * device. As 'new' device is warm we should
 981                                  * never go here again.
 982                                  */
 983                                 goto exit;
 984                         } else {
 985                                 goto err_free_all;
 986                         }
 987                 } else {
 988                         goto err_free_all;
 989                 }
 990         }
 991
 992         dev_info(&d->udev->dev, "%s: found a '%s' in warm state\n",
 993                         KBUILD_MODNAME, d->name);
 994
 995         ret = dvb_usbv2_init(d);
 996         if (ret < 0)
 997                 goto err_free_all;
 998
 999         dev_info(&d->udev->dev,
1000                         "%s: '%s' successfully initialized and connected\n",
1001                         KBUILD_MODNAME, d->name);
1002 exit:
1003         usb_set_intfdata(intf, d);
1004
1005         return 0;
1006 err_free_all:
1007         dvb_usbv2_exit(d);
1008         if (d->props->disconnect)
1009                 d->props->disconnect(d);
1010 err_kfree_priv:
1011         kfree(d->priv);
1012 err_kfree_d:
1013         kfree(d);
1014 err:
1015         dev_dbg(&udev->dev, "%s: failed=%d\n", __func__, ret);
1016         return ret;
1017 }
1018 EXPORT_SYMBOL(dvb_usbv2_probe);
1019
1020 void dvb_usbv2_disconnect(struct usb_interface *intf)
1021 {
1022         struct dvb_usb_device *d = usb_get_intfdata(intf);
1023         const char *devname = kstrdup(dev_name(&d->udev->dev), GFP_KERNEL);
1024         const char *drvname = d->name;
1025
1026         dev_dbg(&d->udev->dev, "%s: bInterfaceNumber=%d\n", __func__,
1027                         intf->cur_altsetting->desc.bInterfaceNumber);
1028
1029         if (d->props->exit)
1030                 d->props->exit(d);
1031
1032         dvb_usbv2_exit(d);
1033
1034         if (d->props->disconnect)
1035                 d->props->disconnect(d);
1036
1037         kfree(d->priv);
1038         kfree(d);
1039
1040         pr_info("%s: '%s:%s' successfully deinitialized and disconnected\n",
1041                 KBUILD_MODNAME, drvname, devname);
1042         kfree(devname);
1043 }
1044 EXPORT_SYMBOL(dvb_usbv2_disconnect);
1045
1046 int dvb_usbv2_suspend(struct usb_interface *intf, pm_message_t msg)
1047 {
1048         struct dvb_usb_device *d = usb_get_intfdata(intf);
1049         int ret = 0, i, active_fe;
1050         struct dvb_frontend *fe;
1051         dev_dbg(&d->udev->dev, "%s:\n", __func__);
1052
1053         /* stop remote controller poll */
1054         if (d->rc_polling_active)
1055                 cancel_delayed_work_sync(&d->rc_query_work);
1056
1057         for (i = MAX_NO_OF_ADAPTER_PER_DEVICE - 1; i >= 0; i--) {
1058                 active_fe = d->adapter[i].active_fe;
1059                 if (d->adapter[i].dvb_adap.priv && active_fe != -1) {
1060                         fe = d->adapter[i].fe[active_fe];
1061                         d->adapter[i].suspend_resume_active = true;
1062
1063                         if (d->props->streaming_ctrl)
1064                                 d->props->streaming_ctrl(fe, 0);
1065
1066                         /* stop usb streaming */
1067                         usb_urb_killv2(&d->adapter[i].stream);
1068
1069                         ret = dvb_frontend_suspend(fe);
1070                 }
1071         }
1072
1073         return ret;
1074 }
1075 EXPORT_SYMBOL(dvb_usbv2_suspend);
1076
1077 static int dvb_usbv2_resume_common(struct dvb_usb_device *d)
1078 {
1079         int ret = 0, i, active_fe;
1080         struct dvb_frontend *fe;
1081         dev_dbg(&d->udev->dev, "%s:\n", __func__);
1082
1083         for (i = 0; i < MAX_NO_OF_ADAPTER_PER_DEVICE; i++) {
1084                 active_fe = d->adapter[i].active_fe;
1085                 if (d->adapter[i].dvb_adap.priv && active_fe != -1) {
1086                         fe = d->adapter[i].fe[active_fe];
1087
1088                         ret = dvb_frontend_resume(fe);
1089
1090                         /* resume usb streaming */
1091                         usb_urb_submitv2(&d->adapter[i].stream, NULL);
1092
1093                         if (d->props->streaming_ctrl)
1094                                 d->props->streaming_ctrl(fe, 1);
1095
1096                         d->adapter[i].suspend_resume_active = false;
1097                 }
1098         }
1099
1100         /* start remote controller poll */
1101         if (d->rc_polling_active)
1102                 schedule_delayed_work(&d->rc_query_work,
1103                                 msecs_to_jiffies(d->rc.interval));
1104
1105         return ret;
1106 }
1107
1108 int dvb_usbv2_resume(struct usb_interface *intf)
1109 {
1110         struct dvb_usb_device *d = usb_get_intfdata(intf);
1111         dev_dbg(&d->udev->dev, "%s:\n", __func__);
1112
1113         return dvb_usbv2_resume_common(d);
1114 }
1115 EXPORT_SYMBOL(dvb_usbv2_resume);
1116
1117 int dvb_usbv2_reset_resume(struct usb_interface *intf)
1118 {
1119         struct dvb_usb_device *d = usb_get_intfdata(intf);
1120         int ret;
1121         dev_dbg(&d->udev->dev, "%s:\n", __func__);
1122
1123         dvb_usbv2_device_power_ctrl(d, 1);
1124
1125         if (d->props->init)
1126                 d->props->init(d);
1127
1128         ret = dvb_usbv2_resume_common(d);
1129
1130         dvb_usbv2_device_power_ctrl(d, 0);
1131
1132         return ret;
1133 }
1134 EXPORT_SYMBOL(dvb_usbv2_reset_resume);
1135
1136 MODULE_VERSION("2.0");
1137 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
1138 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1139 MODULE_DESCRIPTION("DVB USB common");
1140 MODULE_LICENSE("GPL");