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

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