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