drivers/media/video/cx231xx/cx231xx-cards.c

   1 /*
   2    cx231xx-cards.c - driver for Conexant Cx23100/101/102
   3                                 USB video capture devices
   4
   5    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
   6                                 Based on em28xx driver
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #include <linux/init.h>
  24 #include <linux/module.h>
  25 #include <linux/delay.h>
  26 #include <linux/i2c.h>
  27 #include <linux/usb.h>
  28 #include <media/tuner.h>
  29 #include <media/tveeprom.h>
  30 #include <media/v4l2-common.h>
  31 #include <media/v4l2-chip-ident.h>
  32
  33 #include <media/cx25840.h>
  34 #include "xc5000.h"
  35
  36 #include "cx231xx.h"
  37
  38 static int tuner = -1;
  39 module_param(tuner, int, 0444);
  40 MODULE_PARM_DESC(tuner, "tuner type");
  41
  42 static unsigned int disable_ir;
  43 module_param(disable_ir, int, 0444);
  44 MODULE_PARM_DESC(disable_ir, "disable infrared remote support");
  45
  46 /* Bitmask marking allocated devices from 0 to CX231XX_MAXBOARDS */
  47 static unsigned long cx231xx_devused;
  48
  49 /*
  50  *  Reset sequences for analog/digital modes
  51  */
  52
  53 static struct cx231xx_reg_seq RDE250_XCV_TUNER[] = {
  54         {0x03, 0x01, 10},
  55         {0x03, 0x00, 30},
  56         {0x03, 0x01, 10},
  57         {-1, -1, -1},
  58 };
  59
  60 /*
  61  *  Board definitions
  62  */
  63 struct cx231xx_board cx231xx_boards[] = {
  64         [CX231XX_BOARD_UNKNOWN] = {
  65                 .name = "Unknown CX231xx video grabber",
  66                 .tuner_type = TUNER_ABSENT,
  67                 .input = {{
  68                                 .type = CX231XX_VMUX_TELEVISION,
  69                                 .vmux = CX231XX_VIN_3_1,
  70                                 .amux = CX231XX_AMUX_VIDEO,
  71                                 .gpio = 0,
  72                         }, {
  73                                 .type = CX231XX_VMUX_COMPOSITE1,
  74                                 .vmux = CX231XX_VIN_2_1,
  75                                 .amux = CX231XX_AMUX_LINE_IN,
  76                                 .gpio = 0,
  77                         }, {
  78                                 .type = CX231XX_VMUX_SVIDEO,
  79                                 .vmux = CX231XX_VIN_1_1 |
  80                                         (CX231XX_VIN_1_2 << 8) |
  81                                         CX25840_SVIDEO_ON,
  82                                 .amux = CX231XX_AMUX_LINE_IN,
  83                                 .gpio = 0,
  84                         }
  85                 },
  86         },
  87         [CX231XX_BOARD_CNXT_RDE_250] = {
  88                 .name = "Conexant Hybrid TV - RDE250",
  89                 .tuner_type = TUNER_XC5000,
  90                 .tuner_addr = 0x61,
  91                 .tuner_gpio = RDE250_XCV_TUNER,
  92                 .tuner_sif_gpio = 0x05,
  93                 .tuner_scl_gpio = 0x1a,
  94                 .tuner_sda_gpio = 0x1b,
  95                 .decoder = CX231XX_AVDECODER,
  96                 .demod_xfer_mode = 0,
  97                 .ctl_pin_status_mask = 0xFFFFFFC4,
  98                 .agc_analog_digital_select_gpio = 0x0c,
  99                 .gpio_pin_status_mask = 0x4001000,
 100                 .tuner_i2c_master = 1,
 101                 .demod_i2c_master = 2,
 102                 .has_dvb = 1,
 103                 .demod_addr = 0x02,
 104                 .norm = V4L2_STD_PAL,
 105
 106                 .input = {{
 107                                 .type = CX231XX_VMUX_TELEVISION,
 108                                 .vmux = CX231XX_VIN_3_1,
 109                                 .amux = CX231XX_AMUX_VIDEO,
 110                                 .gpio = 0,
 111                         }, {
 112                                 .type = CX231XX_VMUX_COMPOSITE1,
 113                                 .vmux = CX231XX_VIN_2_1,
 114                                 .amux = CX231XX_AMUX_LINE_IN,
 115                                 .gpio = 0,
 116                         }, {
 117                                 .type = CX231XX_VMUX_SVIDEO,
 118                                 .vmux = CX231XX_VIN_1_1 |
 119                                         (CX231XX_VIN_1_2 << 8) |
 120                                         CX25840_SVIDEO_ON,
 121                                 .amux = CX231XX_AMUX_LINE_IN,
 122                                 .gpio = 0,
 123                         }
 124                 },
 125         },
 126
 127         [CX231XX_BOARD_CNXT_RDU_250] = {
 128                 .name = "Conexant Hybrid TV - RDU250",
 129                 .tuner_type = TUNER_XC5000,
 130                 .tuner_addr = 0x61,
 131                 .tuner_gpio = RDE250_XCV_TUNER,
 132                 .tuner_sif_gpio = 0x05,
 133                 .tuner_scl_gpio = 0x1a,
 134                 .tuner_sda_gpio = 0x1b,
 135                 .decoder = CX231XX_AVDECODER,
 136                 .demod_xfer_mode = 0,
 137                 .ctl_pin_status_mask = 0xFFFFFFC4,
 138                 .agc_analog_digital_select_gpio = 0x0c,
 139                 .gpio_pin_status_mask = 0x4001000,
 140                 .tuner_i2c_master = 1,
 141                 .demod_i2c_master = 2,
 142                 .has_dvb = 1,
 143                 .demod_addr = 0x32,
 144                 .norm = V4L2_STD_NTSC,
 145
 146                 .input = {{
 147                                 .type = CX231XX_VMUX_TELEVISION,
 148                                 .vmux = CX231XX_VIN_3_1,
 149                                 .amux = CX231XX_AMUX_VIDEO,
 150                                 .gpio = 0,
 151                         }, {
 152                                 .type = CX231XX_VMUX_COMPOSITE1,
 153                                 .vmux = CX231XX_VIN_2_1,
 154                                 .amux = CX231XX_AMUX_LINE_IN,
 155                                 .gpio = 0,
 156                         }, {
 157                                 .type = CX231XX_VMUX_SVIDEO,
 158                                 .vmux = CX231XX_VIN_1_1 |
 159                                         (CX231XX_VIN_1_2 << 8) |
 160                                         CX25840_SVIDEO_ON,
 161                                 .amux = CX231XX_AMUX_LINE_IN,
 162                                 .gpio = 0,
 163                         }
 164                 },
 165         },
 166 };
 167 const unsigned int cx231xx_bcount = ARRAY_SIZE(cx231xx_boards);
 168
 169 /* table of devices that work with this driver */
 170 struct usb_device_id cx231xx_id_table[] = {
 171         {USB_DEVICE(0x0572, 0x5A3C),
 172          .driver_info = CX231XX_BOARD_UNKNOWN},
 173         {USB_DEVICE(0x0572, 0x58A2),
 174          .driver_info = CX231XX_BOARD_CNXT_RDE_250},
 175         {USB_DEVICE(0x0572, 0x58A1),
 176          .driver_info = CX231XX_BOARD_CNXT_RDU_250},
 177         {},
 178 };
 179
 180 MODULE_DEVICE_TABLE(usb, cx231xx_id_table);
 181
 182 /* cx231xx_tuner_callback
 183  * will be used to reset XC5000 tuner using GPIO pin
 184  */
 185
 186 int cx231xx_tuner_callback(void *ptr, int component, int command, int arg)
 187 {
 188         int rc = 0;
 189         struct cx231xx *dev = ptr;
 190
 191         if (dev->tuner_type == TUNER_XC5000) {
 192                 if (command == XC5000_TUNER_RESET) {
 193                         cx231xx_info
 194                                 ("Tuner CB: RESET: cmd %d : tuner type %d \n",
 195                                  command, dev->tuner_type);
 196                         cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit,
 197                                                1);
 198                         msleep(10);
 199                         cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit,
 200                                                0);
 201                         msleep(330);
 202                         cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit,
 203                                                1);
 204                         msleep(10);
 205                 }
 206         }
 207         return rc;
 208 }
 209 EXPORT_SYMBOL_GPL(cx231xx_tuner_callback);
 210
 211 static inline void cx231xx_set_model(struct cx231xx *dev)
 212 {
 213         memcpy(&dev->board, &cx231xx_boards[dev->model], sizeof(dev->board));
 214 }
 215
 216 /* Since cx231xx_pre_card_setup() requires a proper dev->model,
 217  * this won't work for boards with generic PCI IDs
 218  */
 219 void cx231xx_pre_card_setup(struct cx231xx *dev)
 220 {
 221
 222         cx231xx_set_model(dev);
 223
 224         cx231xx_info("Identified as %s (card=%d)\n",
 225                      dev->board.name, dev->model);
 226
 227         cx231xx_info("Precard: Board is %s\n", dev->board.name);
 228         /* set the direction for GPIO pins */
 229         cx231xx_set_gpio_direction(dev, dev->board.tuner_gpio->bit, 1);
 230         cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit, 1);
 231         cx231xx_set_gpio_direction(dev, dev->board.tuner_sif_gpio, 1);
 232
 233         /* request some modules if any required */
 234
 235         /* reset the Tuner */
 236         cx231xx_gpio_set(dev, dev->board.tuner_gpio);
 237
 238         /* set the mode to Analog mode initially */
 239         cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
 240
 241         /* Unlock device */
 242         /* cx231xx_set_mode(dev, CX231XX_SUSPEND); */
 243
 244 }
 245
 246 #if 0
 247
 248 static void cx231xx_config_tuner(struct cx231xx *dev)
 249 {
 250         struct tuner_setup tun_setup;
 251         struct v4l2_frequency f;
 252
 253         if (dev->tuner_type == TUNER_ABSENT)
 254                 return;
 255
 256         tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
 257         tun_setup.type = dev->tuner_type;
 258         tun_setup.addr = dev->tuner_addr;
 259         tun_setup.tuner_callback = cx231xx_tuner_callback;
 260
 261         cx231xx_i2c_call_clients(&dev->i2c_bus[1], TUNER_SET_TYPE_ADDR,
 262                                  &tun_setup);
 263 #if 0
 264         if (tun_setup.type == TUNER_XC5000) {
 265                 static struct xc2028_ctrl ctrl = {
 266                         .fname = XC5000_DEFAULT_FIRMWARE,
 267                         .max_len = 64,
 268                         .demod = 0;
 269                 };
 270                 struct v4l2_priv_tun_config cfg = {
 271                         .tuner = dev->tuner_type,
 272                         .priv = &ctrl,
 273                 };
 274                 cx231xx_i2c_call_clients(&dev->i2c_bus[1], TUNER_SET_CONFIG,
 275                                          &cfg);
 276         }
 277 #endif
 278
 279         /* configure tuner */
 280         f.tuner = 0;
 281         f.type = V4L2_TUNER_ANALOG_TV;
 282         f.frequency = 9076;     /* just a magic number */
 283         dev->ctl_freq = f.frequency;
 284         cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_S_FREQUENCY, &f);
 285 }
 286
 287 #endif
 288
 289 /* ----------------------------------------------------------------------- */
 290 void cx231xx_set_ir(struct cx231xx *dev, struct IR_i2c *ir)
 291 {
 292         if (disable_ir) {
 293                 ir->get_key = NULL;
 294                 return;
 295         }
 296
 297         /* detect & configure */
 298         switch (dev->model) {
 299
 300         case CX231XX_BOARD_CNXT_RDE_250:
 301                 break;
 302         case CX231XX_BOARD_CNXT_RDU_250:
 303                 break;
 304         default:
 305                 break;
 306         }
 307 }
 308
 309 void cx231xx_card_setup(struct cx231xx *dev)
 310 {
 311         cx231xx_set_model(dev);
 312
 313         dev->tuner_type = cx231xx_boards[dev->model].tuner_type;
 314         if (cx231xx_boards[dev->model].tuner_addr)
 315                 dev->tuner_addr = cx231xx_boards[dev->model].tuner_addr;
 316
 317         cx231xx_info(": tuner type %d, tuner address %d \n",
 318                      dev->tuner_type, dev->tuner_addr);
 319
 320         /* Do card specific if any */
 321         switch (dev->model) {
 322         case CX231XX_BOARD_CNXT_RDE_250:
 323                 /* do card specific GPIO settings if required */
 324                 cx231xx_info("Board is Conexant RDE 250\n");
 325                 break;
 326         case CX231XX_BOARD_CNXT_RDU_250:
 327                 /* do card specific GPIO settings if required */
 328                 cx231xx_info("Board is Conexant RDU 250\n");
 329                 break;
 330         }
 331
 332         /* request some modules */
 333         if (dev->board.decoder == CX231XX_AVDECODER) {
 334                 cx231xx_info(": Requesting cx25840 module\n");
 335                 request_module("cx25840");
 336         }
 337 #if 0
 338         if (dev->board.tuner_type != TUNER_ABSENT) {
 339                 cx231xx_info(": Requesting Tuner module\n");
 340                 request_module("tuner");
 341         }
 342
 343         cx231xx_config_tuner(dev);
 344
 345         /* TBD  IR will be added later */
 346         cx231xx_ir_init(dev);
 347 #endif
 348 }
 349
 350 /*
 351  * cx231xx_config()
 352  * inits registers with sane defaults
 353  */
 354 int cx231xx_config(struct cx231xx *dev)
 355 {
 356         /* TBD need to add cx231xx specific code */
 357         dev->mute = 1;          /* maybe not the right place... */
 358         dev->volume = 0x1f;
 359
 360         return 0;
 361 }
 362
 363 /*
 364  * cx231xx_config_i2c()
 365  * configure i2c attached devices
 366  */
 367 void cx231xx_config_i2c(struct cx231xx *dev)
 368 {
 369         struct v4l2_routing route;
 370
 371         route.input = INPUT(dev->video_input)->vmux;
 372         route.output = 0;
 373
 374         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_STREAMON, NULL);
 375 }
 376
 377 /*
 378  * cx231xx_realease_resources()
 379  * unregisters the v4l2,i2c and usb devices
 380  * called when the device gets disconected or at module unload
 381 */
 382 void cx231xx_release_resources(struct cx231xx *dev)
 383 {
 384
 385 #if 0           /* TBD IR related  */
 386         if (dev->ir)
 387                 cx231xx_ir_fini(dev);
 388 #endif
 389
 390         cx231xx_release_analog_resources(dev);
 391
 392         cx231xx_remove_from_devlist(dev);
 393
 394         cx231xx_dev_uninit(dev);
 395
 396         usb_put_dev(dev->udev);
 397
 398         /* Mark device as unused */
 399         cx231xx_devused &= ~(1 << dev->devno);
 400 }
 401
 402 /*
 403  * cx231xx_init_dev()
 404  * allocates and inits the device structs, registers i2c bus and v4l device
 405  */
 406 static int cx231xx_init_dev(struct cx231xx **devhandle, struct usb_device *udev,
 407                             int minor)
 408 {
 409         struct cx231xx *dev = *devhandle;
 410         int retval = -ENOMEM;
 411         int errCode;
 412         unsigned int maxh, maxw;
 413
 414         dev->udev = udev;
 415         mutex_init(&dev->lock);
 416         mutex_init(&dev->ctrl_urb_lock);
 417         mutex_init(&dev->gpio_i2c_lock);
 418
 419         spin_lock_init(&dev->video_mode.slock);
 420         spin_lock_init(&dev->vbi_mode.slock);
 421         spin_lock_init(&dev->sliced_cc_mode.slock);
 422
 423         init_waitqueue_head(&dev->open);
 424         init_waitqueue_head(&dev->wait_frame);
 425         init_waitqueue_head(&dev->wait_stream);
 426
 427         dev->cx231xx_read_ctrl_reg = cx231xx_read_ctrl_reg;
 428         dev->cx231xx_write_ctrl_reg = cx231xx_write_ctrl_reg;
 429         dev->cx231xx_send_usb_command = cx231xx_send_usb_command;
 430         dev->cx231xx_gpio_i2c_read = cx231xx_gpio_i2c_read;
 431         dev->cx231xx_gpio_i2c_write = cx231xx_gpio_i2c_write;
 432
 433         /* Query cx231xx to find what pcb config it is related to */
 434         initialize_cx231xx(dev);
 435
 436         /* Cx231xx pre card setup */
 437         cx231xx_pre_card_setup(dev);
 438
 439         errCode = cx231xx_config(dev);
 440         if (errCode) {
 441                 cx231xx_errdev("error configuring device\n");
 442                 return -ENOMEM;
 443         }
 444
 445         /* set default norm */
 446         dev->norm = dev->board.norm;
 447
 448         /* register i2c bus */
 449         errCode = cx231xx_dev_init(dev);
 450         if (errCode < 0) {
 451                 cx231xx_errdev("%s: cx231xx_i2c_register - errCode [%d]!\n",
 452                                __func__, errCode);
 453                 return errCode;
 454         }
 455
 456         /* Do board specific init */
 457         cx231xx_card_setup(dev);
 458
 459         /* configure the device */
 460         cx231xx_config_i2c(dev);
 461
 462         maxw = norm_maxw(dev);
 463         maxh = norm_maxh(dev);
 464
 465         /* set default image size */
 466         dev->width = maxw;
 467         dev->height = maxh;
 468         dev->interlaced = 0;
 469         dev->hscale = 0;
 470         dev->vscale = 0;
 471         dev->video_input = 0;
 472
 473         errCode = cx231xx_config(dev);
 474         if (errCode < 0) {
 475                 cx231xx_errdev("%s: cx231xx_config - errCode [%d]!\n",
 476                                __func__, errCode);
 477                 return errCode;
 478         }
 479
 480         /* init video dma queues */
 481         INIT_LIST_HEAD(&dev->video_mode.vidq.active);
 482         INIT_LIST_HEAD(&dev->video_mode.vidq.queued);
 483
 484         /* init vbi dma queues */
 485         INIT_LIST_HEAD(&dev->vbi_mode.vidq.active);
 486         INIT_LIST_HEAD(&dev->vbi_mode.vidq.queued);
 487
 488         /* Reset other chips required if they are tied up with GPIO pins */
 489
 490         cx231xx_add_into_devlist(dev);
 491
 492         retval = cx231xx_register_analog_devices(dev);
 493         if (retval < 0) {
 494                 cx231xx_release_resources(dev);
 495                 goto fail_reg_devices;
 496         }
 497
 498         cx231xx_init_extension(dev);
 499
 500         return 0;
 501
 502 fail_reg_devices:
 503         mutex_unlock(&dev->lock);
 504         return retval;
 505 }
 506
 507 #if defined(CONFIG_MODULES) && defined(MODULE)
 508 static void request_module_async(struct work_struct *work)
 509 {
 510         struct cx231xx *dev = container_of(work,
 511                                            struct cx231xx, request_module_wk);
 512
 513         if (dev->has_alsa_audio)
 514                 request_module("cx231xx-alsa");
 515
 516         if (dev->board.has_dvb)
 517                 request_module("cx231xx-dvb");
 518
 519 }
 520
 521 static void request_modules(struct cx231xx *dev)
 522 {
 523         INIT_WORK(&dev->request_module_wk, request_module_async);
 524         schedule_work(&dev->request_module_wk);
 525 }
 526 #else
 527 #define request_modules(dev)
 528 #endif /* CONFIG_MODULES */
 529
 530 /*
 531  * cx231xx_usb_probe()
 532  * checks for supported devices
 533  */
 534 static int cx231xx_usb_probe(struct usb_interface *interface,
 535                              const struct usb_device_id *id)
 536 {
 537         struct usb_device *udev;
 538         struct usb_interface *uif;
 539         struct cx231xx *dev = NULL;
 540         int retval = -ENODEV;
 541         int nr = 0, ifnum;
 542         int i, isoc_pipe = 0;
 543         char *speed;
 544         char descr[255] = "";
 545         struct usb_interface *lif = NULL;
 546         int skip_interface = 0;
 547         struct usb_interface_assoc_descriptor *assoc_desc;
 548
 549         udev = usb_get_dev(interface_to_usbdev(interface));
 550         ifnum = interface->altsetting[0].desc.bInterfaceNumber;
 551
 552         cx231xx_info(": Interface Number %d\n", ifnum);
 553
 554         /* Interface number 0 - IR interface */
 555         if (ifnum == 0) {
 556                 /* Check to see next free device and mark as used */
 557                 nr = find_first_zero_bit(&cx231xx_devused, CX231XX_MAXBOARDS);
 558                 cx231xx_devused |= 1 << nr;
 559
 560                 if (nr >= CX231XX_MAXBOARDS) {
 561                         cx231xx_info(": Supports only %i cx231xx boards.\n",
 562                                      CX231XX_MAXBOARDS);
 563                         cx231xx_devused &= ~(1 << nr);
 564                         return -ENOMEM;
 565                 }
 566
 567                 /* allocate memory for our device state and initialize it */
 568                 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 569                 if (dev == NULL) {
 570                         cx231xx_err(DRIVER_NAME ": out of memory!\n");
 571                         cx231xx_devused &= ~(1 << nr);
 572                         return -ENOMEM;
 573                 }
 574
 575                 snprintf(dev->name, 29, "cx231xx #%d", nr);
 576                 dev->devno = nr;
 577                 dev->model = id->driver_info;
 578                 dev->video_mode.alt = -1;
 579                 dev->interface_count++;
 580
 581                 /* reset gpio dir and value */
 582                 dev->gpio_dir = 0;
 583                 dev->gpio_val = 0;
 584                 dev->xc_fw_load_done = 0;
 585                 dev->has_alsa_audio = 1;
 586                 dev->power_mode = -1;
 587
 588                 /* 0 - vbi ; 1 -sliced cc mode */
 589                 dev->vbi_or_sliced_cc_mode = 0;
 590
 591                 /* get maximum no.of IAD interfaces */
 592                 assoc_desc = udev->actconfig->intf_assoc[0];
 593                 dev->max_iad_interface_count = assoc_desc->bInterfaceCount;
 594                 cx231xx_info("Found IAD interface count %d\n",
 595                              dev->max_iad_interface_count);
 596
 597                 /* init CIR module TBD */
 598
 599                 /* store the current interface */
 600                 lif = interface;
 601
 602         } else if (ifnum == 1) {
 603
 604                 /* Get dev structure first */
 605                 dev = usb_get_intfdata(udev->actconfig->interface[0]);
 606                 if (dev == NULL) {
 607                         cx231xx_err(DRIVER_NAME ": out of first interface!\n");
 608                         return -ENODEV;
 609                 }
 610
 611                 /* store the interface 0 back */
 612                 lif = udev->actconfig->interface[0];
 613
 614                 /* increment interface count */
 615                 dev->interface_count++;
 616
 617                 /* get device number */
 618                 nr = dev->devno;
 619
 620                 assoc_desc = udev->actconfig->intf_assoc[0];
 621                 if (assoc_desc->bFirstInterface == ifnum) {
 622                         cx231xx_info
 623                         ("Found IAD interface match: AV Desc Start!! \n");
 624                 } else {
 625                         cx231xx_err(" Not found matching interface\n");
 626                         return -ENODEV;
 627                 }
 628
 629         } else if (ifnum >= 2) {
 630                 /* Get dev structure first */
 631                 dev = usb_get_intfdata(udev->actconfig->interface[0]);
 632                 if (dev == NULL) {
 633                         cx231xx_err(DRIVER_NAME ": out of first interface!\n");
 634                         return -ENODEV;
 635                 }
 636
 637                 /* store the interface 0 back */
 638                 lif = udev->actconfig->interface[0];
 639
 640                 /* increment interface count */
 641                 dev->interface_count++;
 642
 643                 /* get device number */
 644                 nr = dev->devno;
 645
 646                 /* set skip interface */
 647                 if ((dev->interface_count - 1) != dev->max_iad_interface_count)
 648                         skip_interface = 1;     /* set skipping */
 649                 else {
 650                         cx231xx_info
 651                         ("Found IAD interface no. match with AV Device no.!\n");
 652                 }
 653         }
 654
 655         switch (udev->speed) {
 656         case USB_SPEED_LOW:
 657                 speed = "1.5";
 658                 break;
 659         case USB_SPEED_UNKNOWN:
 660         case USB_SPEED_FULL:
 661                 speed = "12";
 662                 break;
 663         case USB_SPEED_HIGH:
 664                 speed = "480";
 665                 break;
 666         default:
 667                 speed = "unknown";
 668         }
 669
 670         if (udev->manufacturer)
 671                 strlcpy(descr, udev->manufacturer, sizeof(descr));
 672
 673         if (udev->product) {
 674                 if (*descr)
 675                         strlcat(descr, " ", sizeof(descr));
 676                 strlcat(descr, udev->product, sizeof(descr));
 677         }
 678         if (*descr)
 679                 strlcat(descr, " ", sizeof(descr));
 680
 681         cx231xx_info("New device %s@ %s Mbps "
 682                      "(%04x:%04x, interface %d, class %d)\n",
 683                      descr,
 684                      speed,
 685                      le16_to_cpu(udev->descriptor.idVendor),
 686                      le16_to_cpu(udev->descriptor.idProduct),
 687                      ifnum, interface->altsetting->desc.bInterfaceNumber);
 688
 689         /* AV device initialization */
 690         if ((dev->interface_count - 1) == dev->max_iad_interface_count) {
 691                 cx231xx_info(" Calling init_dev\n");
 692                 /* allocate device struct */
 693                 retval = cx231xx_init_dev(&dev, udev, nr);
 694                 if (retval) {
 695                         cx231xx_devused &= ~(1 << dev->devno);
 696                         kfree(dev);
 697
 698                         return retval;
 699                 }
 700
 701                 /* compute alternate max packet sizes for video */
 702                 uif =
 703                     udev->actconfig->interface[dev->current_pcb_config.
 704                                                hs_config_info[0].interface_info.
 705                                                video_index + 1];
 706
 707                 dev->video_mode.end_point_addr =
 708                     le16_to_cpu(uif->altsetting[0].endpoint[isoc_pipe].desc.
 709                                 bEndpointAddress);
 710
 711                 dev->video_mode.num_alt = uif->num_altsetting;
 712                 cx231xx_info(": EndPoint Addr 0x%x, Alternate settings: %i\n",
 713                              dev->video_mode.end_point_addr,
 714                              dev->video_mode.num_alt);
 715                 dev->video_mode.alt_max_pkt_size =
 716                     kmalloc(32 * dev->video_mode.num_alt, GFP_KERNEL);
 717
 718                 if (dev->video_mode.alt_max_pkt_size == NULL) {
 719                         cx231xx_errdev("out of memory!\n");
 720                         cx231xx_devused &= ~(1 << nr);
 721                         kfree(dev);
 722                         return -ENOMEM;
 723                 }
 724
 725                 for (i = 0; i < dev->video_mode.num_alt; i++) {
 726                         u16 tmp =
 727                             le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].
 728                                         desc.wMaxPacketSize);
 729                         dev->video_mode.alt_max_pkt_size[i] =
 730                             (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
 731                         cx231xx_info("Alternate setting %i, max size= %i\n", i,
 732                                      dev->video_mode.alt_max_pkt_size[i]);
 733                 }
 734
 735                 /* compute alternate max packet sizes for vbi */
 736                 uif =
 737                     udev->actconfig->interface[dev->current_pcb_config.
 738                                                hs_config_info[0].interface_info.
 739                                                vanc_index + 1];
 740
 741                 dev->vbi_mode.end_point_addr =
 742                     le16_to_cpu(uif->altsetting[0].endpoint[isoc_pipe].desc.
 743                                 bEndpointAddress);
 744
 745                 dev->vbi_mode.num_alt = uif->num_altsetting;
 746                 cx231xx_info(": EndPoint Addr 0x%x, Alternate settings: %i\n",
 747                              dev->vbi_mode.end_point_addr,
 748                              dev->vbi_mode.num_alt);
 749                 dev->vbi_mode.alt_max_pkt_size =
 750                     kmalloc(32 * dev->vbi_mode.num_alt, GFP_KERNEL);
 751
 752                 if (dev->vbi_mode.alt_max_pkt_size == NULL) {
 753                         cx231xx_errdev("out of memory!\n");
 754                         cx231xx_devused &= ~(1 << nr);
 755                         kfree(dev);
 756                         return -ENOMEM;
 757                 }
 758
 759                 for (i = 0; i < dev->vbi_mode.num_alt; i++) {
 760                         u16 tmp =
 761                             le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].
 762                                         desc.wMaxPacketSize);
 763                         dev->vbi_mode.alt_max_pkt_size[i] =
 764                             (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
 765                         cx231xx_info("Alternate setting %i, max size= %i\n", i,
 766                                      dev->vbi_mode.alt_max_pkt_size[i]);
 767                 }
 768
 769                 /* compute alternate max packet sizes for sliced CC */
 770                 uif =
 771                     udev->actconfig->interface[dev->current_pcb_config.
 772                                                hs_config_info[0].interface_info.
 773                                                hanc_index + 1];
 774
 775                 dev->sliced_cc_mode.end_point_addr =
 776                     le16_to_cpu(uif->altsetting[0].endpoint[isoc_pipe].desc.
 777                                 bEndpointAddress);
 778
 779                 dev->sliced_cc_mode.num_alt = uif->num_altsetting;
 780                 cx231xx_info(": EndPoint Addr 0x%x, Alternate settings: %i\n",
 781                              dev->sliced_cc_mode.end_point_addr,
 782                              dev->sliced_cc_mode.num_alt);
 783                 dev->sliced_cc_mode.alt_max_pkt_size =
 784                     kmalloc(32 * dev->sliced_cc_mode.num_alt, GFP_KERNEL);
 785
 786                 if (dev->sliced_cc_mode.alt_max_pkt_size == NULL) {
 787                         cx231xx_errdev("out of memory!\n");
 788                         cx231xx_devused &= ~(1 << nr);
 789                         kfree(dev);
 790                         return -ENOMEM;
 791                 }
 792
 793                 for (i = 0; i < dev->sliced_cc_mode.num_alt; i++) {
 794                         u16 tmp =
 795                             le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].
 796                                         desc.wMaxPacketSize);
 797                         dev->sliced_cc_mode.alt_max_pkt_size[i] =
 798                             (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
 799                         cx231xx_info("Alternate setting %i, max size= %i\n", i,
 800                                      dev->sliced_cc_mode.alt_max_pkt_size[i]);
 801                 }
 802
 803                 if (dev->current_pcb_config.ts1_source != 0xff) {
 804
 805                         /* compute alternate max packet sizes for TS1 */
 806                         uif =
 807                             udev->actconfig->interface[dev->current_pcb_config.
 808                                                        hs_config_info[0].
 809                                                        interface_info.
 810                                                        ts1_index + 1];
 811
 812                         dev->ts1_mode.end_point_addr =
 813                             le16_to_cpu(uif->altsetting[0].endpoint[isoc_pipe].
 814                                         desc.bEndpointAddress);
 815
 816                         dev->ts1_mode.num_alt = uif->num_altsetting;
 817                         cx231xx_info
 818                             (": EndPoint Addr 0x%x, Alternate settings: %i\n",
 819                              dev->ts1_mode.end_point_addr,
 820                              dev->ts1_mode.num_alt);
 821                         dev->ts1_mode.alt_max_pkt_size =
 822                             kmalloc(32 * dev->ts1_mode.num_alt, GFP_KERNEL);
 823
 824                         if (dev->ts1_mode.alt_max_pkt_size == NULL) {
 825                                 cx231xx_errdev("out of memory!\n");
 826                                 cx231xx_devused &= ~(1 << nr);
 827                                 kfree(dev);
 828                                 return -ENOMEM;
 829                         }
 830
 831                         for (i = 0; i < dev->ts1_mode.num_alt; i++) {
 832                                 u16 tmp =
 833                                     le16_to_cpu(uif->altsetting[i].
 834                                                 endpoint[isoc_pipe].desc.
 835                                                 wMaxPacketSize);
 836                                 dev->ts1_mode.alt_max_pkt_size[i] =
 837                                     (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) +
 838                                                       1);
 839                                 cx231xx_info
 840                                     ("Alternate setting %i, max size= %i\n", i,
 841                                      dev->ts1_mode.alt_max_pkt_size[i]);
 842                         }
 843                 }
 844
 845         }
 846
 847         /* save our data pointer in this interface device */
 848         usb_set_intfdata(lif, dev);
 849
 850         /* load other modules required */
 851         if ((dev->interface_count - 1) == dev->max_iad_interface_count) {
 852                 cx231xx_info("Calling request modules\n");
 853                 request_modules(dev);
 854         }
 855
 856         if (skip_interface) {
 857                 cx231xx_info("Skipping the interface\n");
 858                 return -ENODEV;
 859         }
 860
 861         return 0;
 862 }
 863
 864 /*
 865  * cx231xx_usb_disconnect()
 866  * called when the device gets diconencted
 867  * video device will be unregistered on v4l2_close in case it is still open
 868  */
 869 static void cx231xx_usb_disconnect(struct usb_interface *interface)
 870 {
 871         struct cx231xx *dev;
 872
 873         dev = usb_get_intfdata(interface);
 874         usb_set_intfdata(interface, NULL);
 875
 876         if (!dev)
 877                 return;
 878
 879         /* wait until all current v4l2 io is finished then deallocate
 880            resources */
 881         mutex_lock(&dev->lock);
 882
 883         wake_up_interruptible_all(&dev->open);
 884
 885         if (dev->users) {
 886                 cx231xx_warn
 887                     ("device /dev/video%d is open! Deregistration and memory "
 888                      "deallocation are deferred on close.\n", dev->vdev->num);
 889
 890                 dev->state |= DEV_MISCONFIGURED;
 891                 cx231xx_uninit_isoc(dev);
 892                 dev->state |= DEV_DISCONNECTED;
 893                 wake_up_interruptible(&dev->wait_frame);
 894                 wake_up_interruptible(&dev->wait_stream);
 895         } else {
 896                 dev->state |= DEV_DISCONNECTED;
 897                 cx231xx_release_resources(dev);
 898         }
 899
 900         cx231xx_close_extension(dev);
 901
 902         mutex_unlock(&dev->lock);
 903
 904         if (!dev->users) {
 905                 kfree(dev->video_mode.alt_max_pkt_size);
 906                 kfree(dev->vbi_mode.alt_max_pkt_size);
 907                 kfree(dev->sliced_cc_mode.alt_max_pkt_size);
 908                 kfree(dev->ts1_mode.alt_max_pkt_size);
 909                 kfree(dev);
 910         }
 911 }
 912
 913 static struct usb_driver cx231xx_usb_driver = {
 914         .name = "cx231xx",
 915         .probe = cx231xx_usb_probe,
 916         .disconnect = cx231xx_usb_disconnect,
 917         .id_table = cx231xx_id_table,
 918 };
 919
 920 static int __init cx231xx_module_init(void)
 921 {
 922         int result;
 923
 924         printk(KERN_INFO DRIVER_NAME " v4l2 driver loaded.\n");
 925
 926         /* register this driver with the USB subsystem */
 927         result = usb_register(&cx231xx_usb_driver);
 928         if (result)
 929                 cx231xx_err(DRIVER_NAME
 930                             " usb_register failed. Error number %d.\n", result);
 931
 932         return result;
 933 }
 934
 935 static void __exit cx231xx_module_exit(void)
 936 {
 937         /* deregister this driver with the USB subsystem */
 938         usb_deregister(&cx231xx_usb_driver);
 939 }
 940
 941 module_init(cx231xx_module_init);
 942 module_exit(cx231xx_module_exit);