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/slab.h>
  26 #include <linux/delay.h>
  27 #include <linux/i2c.h>
  28 #include <linux/usb.h>
  29 #include <media/tuner.h>
  30 #include <media/tveeprom.h>
  31 #include <media/v4l2-common.h>
  32 #include <media/v4l2-chip-ident.h>
  33
  34 #include <media/cx25840.h>
  35 #include "xc5000.h"
  36
  37 #include "cx231xx.h"
  38
  39 static int tuner = -1;
  40 module_param(tuner, int, 0444);
  41 MODULE_PARM_DESC(tuner, "tuner type");
  42
  43 static unsigned int disable_ir;
  44 module_param(disable_ir, int, 0444);
  45 MODULE_PARM_DESC(disable_ir, "disable infrared remote support");
  46
  47 /* Bitmask marking allocated devices from 0 to CX231XX_MAXBOARDS */
  48 static unsigned long cx231xx_devused;
  49
  50 /*
  51  *  Reset sequences for analog/digital modes
  52  */
  53
  54 static struct cx231xx_reg_seq RDE250_XCV_TUNER[] = {
  55         {0x03, 0x01, 10},
  56         {0x03, 0x00, 30},
  57         {0x03, 0x01, 10},
  58         {-1, -1, -1},
  59 };
  60
  61 /*
  62  *  Board definitions
  63  */
  64 struct cx231xx_board cx231xx_boards[] = {
  65         [CX231XX_BOARD_UNKNOWN] = {
  66                 .name = "Unknown CX231xx video grabber",
  67                 .tuner_type = TUNER_ABSENT,
  68                 .input = {{
  69                                 .type = CX231XX_VMUX_TELEVISION,
  70                                 .vmux = CX231XX_VIN_3_1,
  71                                 .amux = CX231XX_AMUX_VIDEO,
  72                                 .gpio = NULL,
  73                         }, {
  74                                 .type = CX231XX_VMUX_COMPOSITE1,
  75                                 .vmux = CX231XX_VIN_2_1,
  76                                 .amux = CX231XX_AMUX_LINE_IN,
  77                                 .gpio = NULL,
  78                         }, {
  79                                 .type = CX231XX_VMUX_SVIDEO,
  80                                 .vmux = CX231XX_VIN_1_1 |
  81                                         (CX231XX_VIN_1_2 << 8) |
  82                                         CX25840_SVIDEO_ON,
  83                                 .amux = CX231XX_AMUX_LINE_IN,
  84                                 .gpio = NULL,
  85                         }
  86                 },
  87         },
  88         [CX231XX_BOARD_CNXT_RDE_250] = {
  89                 .name = "Conexant Hybrid TV - RDE250",
  90                 .tuner_type = TUNER_XC5000,
  91                 .tuner_addr = 0x61,
  92                 .tuner_gpio = RDE250_XCV_TUNER,
  93                 .tuner_sif_gpio = 0x05,
  94                 .tuner_scl_gpio = 0x1a,
  95                 .tuner_sda_gpio = 0x1b,
  96                 .decoder = CX231XX_AVDECODER,
  97                 .demod_xfer_mode = 0,
  98                 .ctl_pin_status_mask = 0xFFFFFFC4,
  99                 .agc_analog_digital_select_gpio = 0x0c,
 100                 .gpio_pin_status_mask = 0x4001000,
 101                 .tuner_i2c_master = 1,
 102                 .demod_i2c_master = 2,
 103                 .has_dvb = 1,
 104                 .demod_addr = 0x02,
 105                 .norm = V4L2_STD_PAL,
 106
 107                 .input = {{
 108                                 .type = CX231XX_VMUX_TELEVISION,
 109                                 .vmux = CX231XX_VIN_3_1,
 110                                 .amux = CX231XX_AMUX_VIDEO,
 111                                 .gpio = NULL,
 112                         }, {
 113                                 .type = CX231XX_VMUX_COMPOSITE1,
 114                                 .vmux = CX231XX_VIN_2_1,
 115                                 .amux = CX231XX_AMUX_LINE_IN,
 116                                 .gpio = NULL,
 117                         }, {
 118                                 .type = CX231XX_VMUX_SVIDEO,
 119                                 .vmux = CX231XX_VIN_1_1 |
 120                                         (CX231XX_VIN_1_2 << 8) |
 121                                         CX25840_SVIDEO_ON,
 122                                 .amux = CX231XX_AMUX_LINE_IN,
 123                                 .gpio = NULL,
 124                         }
 125                 },
 126         },
 127
 128         [CX231XX_BOARD_CNXT_RDU_250] = {
 129                 .name = "Conexant Hybrid TV - RDU250",
 130                 .tuner_type = TUNER_XC5000,
 131                 .tuner_addr = 0x61,
 132                 .tuner_gpio = RDE250_XCV_TUNER,
 133                 .tuner_sif_gpio = 0x05,
 134                 .tuner_scl_gpio = 0x1a,
 135                 .tuner_sda_gpio = 0x1b,
 136                 .decoder = CX231XX_AVDECODER,
 137                 .demod_xfer_mode = 0,
 138                 .ctl_pin_status_mask = 0xFFFFFFC4,
 139                 .agc_analog_digital_select_gpio = 0x0c,
 140                 .gpio_pin_status_mask = 0x4001000,
 141                 .tuner_i2c_master = 1,
 142                 .demod_i2c_master = 2,
 143                 .has_dvb = 1,
 144                 .demod_addr = 0x32,
 145                 .norm = V4L2_STD_NTSC,
 146
 147                 .input = {{
 148                                 .type = CX231XX_VMUX_TELEVISION,
 149                                 .vmux = CX231XX_VIN_3_1,
 150                                 .amux = CX231XX_AMUX_VIDEO,
 151                                 .gpio = NULL,
 152                         }, {
 153                                 .type = CX231XX_VMUX_COMPOSITE1,
 154                                 .vmux = CX231XX_VIN_2_1,
 155                                 .amux = CX231XX_AMUX_LINE_IN,
 156                                 .gpio = NULL,
 157                         }, {
 158                                 .type = CX231XX_VMUX_SVIDEO,
 159                                 .vmux = CX231XX_VIN_1_1 |
 160                                         (CX231XX_VIN_1_2 << 8) |
 161                                         CX25840_SVIDEO_ON,
 162                                 .amux = CX231XX_AMUX_LINE_IN,
 163                                 .gpio = NULL,
 164                         }
 165                 },
 166         },
 167 };
 168 const unsigned int cx231xx_bcount = ARRAY_SIZE(cx231xx_boards);
 169
 170 /* table of devices that work with this driver */
 171 struct usb_device_id cx231xx_id_table[] = {
 172         {USB_DEVICE(0x0572, 0x5A3C),
 173          .driver_info = CX231XX_BOARD_UNKNOWN},
 174         {USB_DEVICE(0x0572, 0x58A2),
 175          .driver_info = CX231XX_BOARD_CNXT_RDE_250},
 176         {USB_DEVICE(0x0572, 0x58A1),
 177          .driver_info = CX231XX_BOARD_CNXT_RDU_250},
 178         {},
 179 };
 180
 181 MODULE_DEVICE_TABLE(usb, cx231xx_id_table);
 182
 183 /* cx231xx_tuner_callback
 184  * will be used to reset XC5000 tuner using GPIO pin
 185  */
 186
 187 int cx231xx_tuner_callback(void *ptr, int component, int command, int arg)
 188 {
 189         int rc = 0;
 190         struct cx231xx *dev = ptr;
 191
 192         if (dev->tuner_type == TUNER_XC5000) {
 193                 if (command == XC5000_TUNER_RESET) {
 194                         cx231xx_info
 195                                 ("Tuner CB: RESET: cmd %d : tuner type %d \n",
 196                                  command, dev->tuner_type);
 197                         cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit,
 198                                                1);
 199                         msleep(10);
 200                         cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit,
 201                                                0);
 202                         msleep(330);
 203                         cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit,
 204                                                1);
 205                         msleep(10);
 206                 }
 207         }
 208         return rc;
 209 }
 210 EXPORT_SYMBOL_GPL(cx231xx_tuner_callback);
 211
 212 static inline void cx231xx_set_model(struct cx231xx *dev)
 213 {
 214         memcpy(&dev->board, &cx231xx_boards[dev->model], sizeof(dev->board));
 215 }
 216
 217 /* Since cx231xx_pre_card_setup() requires a proper dev->model,
 218  * this won't work for boards with generic PCI IDs
 219  */
 220 void cx231xx_pre_card_setup(struct cx231xx *dev)
 221 {
 222
 223         cx231xx_set_model(dev);
 224
 225         cx231xx_info("Identified as %s (card=%d)\n",
 226                      dev->board.name, dev->model);
 227
 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 static void cx231xx_config_tuner(struct cx231xx *dev)
 247 {
 248         struct tuner_setup tun_setup;
 249         struct v4l2_frequency f;
 250
 251         if (dev->tuner_type == TUNER_ABSENT)
 252                 return;
 253
 254         tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
 255         tun_setup.type = dev->tuner_type;
 256         tun_setup.addr = dev->tuner_addr;
 257         tun_setup.tuner_callback = cx231xx_tuner_callback;
 258
 259         tuner_call(dev, tuner, s_type_addr, &tun_setup);
 260
 261 #if 0
 262         if (tun_setup.type == TUNER_XC5000) {
 263                 static struct xc2028_ctrl ctrl = {
 264                         .fname = XC5000_DEFAULT_FIRMWARE,
 265                         .max_len = 64,
 266                         .demod = 0;
 267                 };
 268                 struct v4l2_priv_tun_config cfg = {
 269                         .tuner = dev->tuner_type,
 270                         .priv = &ctrl,
 271                 };
 272                 tuner_call(dev, tuner, s_config, &cfg);
 273         }
 274 #endif
 275         /* configure tuner */
 276         f.tuner = 0;
 277         f.type = V4L2_TUNER_ANALOG_TV;
 278         f.frequency = 9076;     /* just a magic number */
 279         dev->ctl_freq = f.frequency;
 280         call_all(dev, tuner, s_frequency, &f);
 281
 282 }
 283
 284 /* ----------------------------------------------------------------------- */
 285 void cx231xx_register_i2c_ir(struct cx231xx *dev)
 286 {
 287         if (disable_ir)
 288                 return;
 289
 290         /* REVISIT: instantiate IR device */
 291
 292         /* detect & configure */
 293         switch (dev->model) {
 294
 295         case CX231XX_BOARD_CNXT_RDE_250:
 296                 break;
 297         case CX231XX_BOARD_CNXT_RDU_250:
 298                 break;
 299         default:
 300                 break;
 301         }
 302 }
 303
 304 void cx231xx_card_setup(struct cx231xx *dev)
 305 {
 306
 307         cx231xx_set_model(dev);
 308
 309         dev->tuner_type = cx231xx_boards[dev->model].tuner_type;
 310         if (cx231xx_boards[dev->model].tuner_addr)
 311                 dev->tuner_addr = cx231xx_boards[dev->model].tuner_addr;
 312
 313         /* request some modules */
 314         if (dev->board.decoder == CX231XX_AVDECODER) {
 315                 dev->sd_cx25840 = v4l2_i2c_new_subdev(&dev->v4l2_dev,
 316                                         &dev->i2c_bus[0].i2c_adap,
 317                                         "cx25840", "cx25840", 0x88 >> 1, NULL);
 318                 if (dev->sd_cx25840 == NULL)
 319                         cx231xx_info("cx25840 subdev registration failure\n");
 320                 cx25840_call(dev, core, load_fw);
 321
 322         }
 323
 324         if (dev->board.tuner_type != TUNER_ABSENT) {
 325                 dev->sd_tuner = v4l2_i2c_new_subdev(&dev->v4l2_dev,
 326                                 &dev->i2c_bus[1].i2c_adap,
 327                                 "tuner", "tuner", 0xc2 >> 1, NULL);
 328                 if (dev->sd_tuner == NULL)
 329                         cx231xx_info("tuner subdev registration failure\n");
 330
 331                 cx231xx_config_tuner(dev);
 332         }
 333
 334         cx231xx_config_tuner(dev);
 335
 336 #if 0
 337         /* TBD  IR will be added later */
 338         cx231xx_ir_init(dev);
 339 #endif
 340 }
 341
 342 /*
 343  * cx231xx_config()
 344  * inits registers with sane defaults
 345  */
 346 int cx231xx_config(struct cx231xx *dev)
 347 {
 348         /* TBD need to add cx231xx specific code */
 349         dev->mute = 1;          /* maybe not the right place... */
 350         dev->volume = 0x1f;
 351
 352         return 0;
 353 }
 354
 355 /*
 356  * cx231xx_config_i2c()
 357  * configure i2c attached devices
 358  */
 359 void cx231xx_config_i2c(struct cx231xx *dev)
 360 {
 361         /* u32 input = INPUT(dev->video_input)->vmux; */
 362
 363         call_all(dev, video, s_stream, 1);
 364 }
 365
 366 /*
 367  * cx231xx_realease_resources()
 368  * unregisters the v4l2,i2c and usb devices
 369  * called when the device gets disconected or at module unload
 370 */
 371 void cx231xx_release_resources(struct cx231xx *dev)
 372 {
 373
 374 #if 0           /* TBD IR related  */
 375         if (dev->ir)
 376                 cx231xx_ir_fini(dev);
 377 #endif
 378
 379         cx231xx_release_analog_resources(dev);
 380
 381         cx231xx_remove_from_devlist(dev);
 382
 383         cx231xx_dev_uninit(dev);
 384
 385         usb_put_dev(dev->udev);
 386
 387         /* Mark device as unused */
 388         cx231xx_devused &= ~(1 << dev->devno);
 389 }
 390
 391 /*
 392  * cx231xx_init_dev()
 393  * allocates and inits the device structs, registers i2c bus and v4l device
 394  */
 395 static int cx231xx_init_dev(struct cx231xx **devhandle, struct usb_device *udev,
 396                             int minor)
 397 {
 398         struct cx231xx *dev = *devhandle;
 399         int retval = -ENOMEM;
 400         int errCode;
 401         unsigned int maxh, maxw;
 402
 403         dev->udev = udev;
 404         mutex_init(&dev->lock);
 405         mutex_init(&dev->ctrl_urb_lock);
 406         mutex_init(&dev->gpio_i2c_lock);
 407
 408         spin_lock_init(&dev->video_mode.slock);
 409         spin_lock_init(&dev->vbi_mode.slock);
 410         spin_lock_init(&dev->sliced_cc_mode.slock);
 411
 412         init_waitqueue_head(&dev->open);
 413         init_waitqueue_head(&dev->wait_frame);
 414         init_waitqueue_head(&dev->wait_stream);
 415
 416         dev->cx231xx_read_ctrl_reg = cx231xx_read_ctrl_reg;
 417         dev->cx231xx_write_ctrl_reg = cx231xx_write_ctrl_reg;
 418         dev->cx231xx_send_usb_command = cx231xx_send_usb_command;
 419         dev->cx231xx_gpio_i2c_read = cx231xx_gpio_i2c_read;
 420         dev->cx231xx_gpio_i2c_write = cx231xx_gpio_i2c_write;
 421
 422         /* Query cx231xx to find what pcb config it is related to */
 423         initialize_cx231xx(dev);
 424
 425         /* Cx231xx pre card setup */
 426         cx231xx_pre_card_setup(dev);
 427
 428         errCode = cx231xx_config(dev);
 429         if (errCode) {
 430                 cx231xx_errdev("error configuring device\n");
 431                 return -ENOMEM;
 432         }
 433
 434         /* set default norm */
 435         dev->norm = dev->board.norm;
 436
 437         /* register i2c bus */
 438         errCode = cx231xx_dev_init(dev);
 439         if (errCode < 0) {
 440                 cx231xx_errdev("%s: cx231xx_i2c_register - errCode [%d]!\n",
 441                                __func__, errCode);
 442                 return errCode;
 443         }
 444
 445         /* Do board specific init */
 446         cx231xx_card_setup(dev);
 447
 448         /* configure the device */
 449         cx231xx_config_i2c(dev);
 450
 451         maxw = norm_maxw(dev);
 452         maxh = norm_maxh(dev);
 453
 454         /* set default image size */
 455         dev->width = maxw;
 456         dev->height = maxh;
 457         dev->interlaced = 0;
 458         dev->hscale = 0;
 459         dev->vscale = 0;
 460         dev->video_input = 0;
 461
 462         errCode = cx231xx_config(dev);
 463         if (errCode < 0) {
 464                 cx231xx_errdev("%s: cx231xx_config - errCode [%d]!\n",
 465                                __func__, errCode);
 466                 return errCode;
 467         }
 468
 469         /* init video dma queues */
 470         INIT_LIST_HEAD(&dev->video_mode.vidq.active);
 471         INIT_LIST_HEAD(&dev->video_mode.vidq.queued);
 472
 473         /* init vbi dma queues */
 474         INIT_LIST_HEAD(&dev->vbi_mode.vidq.active);
 475         INIT_LIST_HEAD(&dev->vbi_mode.vidq.queued);
 476
 477         /* Reset other chips required if they are tied up with GPIO pins */
 478
 479         cx231xx_add_into_devlist(dev);
 480
 481         retval = cx231xx_register_analog_devices(dev);
 482         if (retval < 0) {
 483                 cx231xx_release_resources(dev);
 484                 goto fail_reg_devices;
 485         }
 486
 487         cx231xx_init_extension(dev);
 488
 489         return 0;
 490
 491 fail_reg_devices:
 492         mutex_unlock(&dev->lock);
 493         return retval;
 494 }
 495
 496 #if defined(CONFIG_MODULES) && defined(MODULE)
 497 static void request_module_async(struct work_struct *work)
 498 {
 499         struct cx231xx *dev = container_of(work,
 500                                            struct cx231xx, request_module_wk);
 501
 502         if (dev->has_alsa_audio)
 503                 request_module("cx231xx-alsa");
 504
 505         if (dev->board.has_dvb)
 506                 request_module("cx231xx-dvb");
 507
 508 }
 509
 510 static void request_modules(struct cx231xx *dev)
 511 {
 512         INIT_WORK(&dev->request_module_wk, request_module_async);
 513         schedule_work(&dev->request_module_wk);
 514 }
 515 #else
 516 #define request_modules(dev)
 517 #endif /* CONFIG_MODULES */
 518
 519 /*
 520  * cx231xx_usb_probe()
 521  * checks for supported devices
 522  */
 523 static int cx231xx_usb_probe(struct usb_interface *interface,
 524                              const struct usb_device_id *id)
 525 {
 526         struct usb_device *udev;
 527         struct usb_interface *uif;
 528         struct cx231xx *dev = NULL;
 529         int retval = -ENODEV;
 530         int nr = 0, ifnum;
 531         int i, isoc_pipe = 0;
 532         char *speed;
 533         char descr[255] = "";
 534         struct usb_interface *lif = NULL;
 535         int skip_interface = 0;
 536         struct usb_interface_assoc_descriptor *assoc_desc;
 537
 538         udev = usb_get_dev(interface_to_usbdev(interface));
 539         ifnum = interface->altsetting[0].desc.bInterfaceNumber;
 540
 541         if (!ifnum) {
 542                 /*
 543                  * Interface number 0 - IR interface
 544                  */
 545                 /* Check to see next free device and mark as used */
 546                 nr = find_first_zero_bit(&cx231xx_devused, CX231XX_MAXBOARDS);
 547                 cx231xx_devused |= 1 << nr;
 548
 549                 if (nr >= CX231XX_MAXBOARDS) {
 550                         cx231xx_err(DRIVER_NAME ": Supports only %i cx231xx boards.\n",
 551                                      CX231XX_MAXBOARDS);
 552                         cx231xx_devused &= ~(1 << nr);
 553                         return -ENOMEM;
 554                 }
 555
 556                 /* allocate memory for our device state and initialize it */
 557                 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 558                 if (dev == NULL) {
 559                         cx231xx_err(DRIVER_NAME ": out of memory!\n");
 560                         cx231xx_devused &= ~(1 << nr);
 561                         return -ENOMEM;
 562                 }
 563
 564                 snprintf(dev->name, 29, "cx231xx #%d", nr);
 565                 dev->devno = nr;
 566                 dev->model = id->driver_info;
 567                 dev->video_mode.alt = -1;
 568                 dev->interface_count++;
 569
 570                 /* reset gpio dir and value */
 571                 dev->gpio_dir = 0;
 572                 dev->gpio_val = 0;
 573                 dev->xc_fw_load_done = 0;
 574                 dev->has_alsa_audio = 1;
 575                 dev->power_mode = -1;
 576
 577                 /* 0 - vbi ; 1 -sliced cc mode */
 578                 dev->vbi_or_sliced_cc_mode = 0;
 579
 580                 /* get maximum no.of IAD interfaces */
 581                 assoc_desc = udev->actconfig->intf_assoc[0];
 582                 dev->max_iad_interface_count = assoc_desc->bInterfaceCount;
 583
 584                 /* init CIR module TBD */
 585
 586                 /* store the current interface */
 587                 lif = interface;
 588
 589                 switch (udev->speed) {
 590                 case USB_SPEED_LOW:
 591                         speed = "1.5";
 592                         break;
 593                 case USB_SPEED_UNKNOWN:
 594                 case USB_SPEED_FULL:
 595                         speed = "12";
 596                         break;
 597                 case USB_SPEED_HIGH:
 598                         speed = "480";
 599                         break;
 600                 default:
 601                         speed = "unknown";
 602                 }
 603
 604                 if (udev->manufacturer)
 605                         strlcpy(descr, udev->manufacturer, sizeof(descr));
 606
 607                 if (udev->product) {
 608                         if (*descr)
 609                                 strlcat(descr, " ", sizeof(descr));
 610                         strlcat(descr, udev->product, sizeof(descr));
 611                 }
 612                 if (*descr)
 613                         strlcat(descr, " ", sizeof(descr));
 614
 615                 cx231xx_info("New device %s@ %s Mbps "
 616                      "(%04x:%04x) with %d interfaces\n",
 617                      descr,
 618                      speed,
 619                      le16_to_cpu(udev->descriptor.idVendor),
 620                      le16_to_cpu(udev->descriptor.idProduct),
 621                      dev->max_iad_interface_count);
 622         } else {
 623                 /* Get dev structure first */
 624                 dev = usb_get_intfdata(udev->actconfig->interface[0]);
 625                 if (dev == NULL) {
 626                         cx231xx_err(DRIVER_NAME ": out of first interface!\n");
 627                         return -ENODEV;
 628                 }
 629
 630                 /* store the interface 0 back */
 631                 lif = udev->actconfig->interface[0];
 632
 633                 /* increment interface count */
 634                 dev->interface_count++;
 635
 636                 /* get device number */
 637                 nr = dev->devno;
 638
 639                 /*
 640                  * set skip interface, for all interfaces but
 641                  * interface 1 and the last one
 642                  */
 643                 if ((ifnum != 1) && ((dev->interface_count - 1)
 644                                      != dev->max_iad_interface_count))
 645                         skip_interface = 1;
 646
 647                 if (ifnum == 1) {
 648                         assoc_desc = udev->actconfig->intf_assoc[0];
 649                         if (assoc_desc->bFirstInterface != ifnum) {
 650                                 cx231xx_err(DRIVER_NAME ": Not found "
 651                                             "matching IAD interface\n");
 652                                 return -ENODEV;
 653                         }
 654                 }
 655         }
 656
 657         if (skip_interface)
 658                 return -ENODEV;
 659
 660         cx231xx_info("registering interface %d\n", ifnum);
 661
 662         /* save our data pointer in this interface device */
 663         usb_set_intfdata(lif, dev);
 664
 665         if ((dev->interface_count - 1) != dev->max_iad_interface_count)
 666                 return 0;
 667
 668         /*
 669          * AV device initialization - only done at the last interface
 670          */
 671
 672         /* Create v4l2 device */
 673         retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
 674         if (retval) {
 675                 cx231xx_errdev("v4l2_device_register failed\n");
 676                 cx231xx_devused &= ~(1 << nr);
 677                 kfree(dev);
 678                 return -EIO;
 679         }
 680
 681         /* allocate device struct */
 682         retval = cx231xx_init_dev(&dev, udev, nr);
 683         if (retval) {
 684                 cx231xx_devused &= ~(1 << dev->devno);
 685                 v4l2_device_unregister(&dev->v4l2_dev);
 686                 kfree(dev);
 687                 return retval;
 688         }
 689
 690         /* compute alternate max packet sizes for video */
 691         uif = udev->actconfig->interface[dev->current_pcb_config.
 692                        hs_config_info[0].interface_info.video_index + 1];
 693
 694         dev->video_mode.end_point_addr = le16_to_cpu(uif->altsetting[0].
 695                         endpoint[isoc_pipe].desc.bEndpointAddress);
 696
 697         dev->video_mode.num_alt = uif->num_altsetting;
 698         cx231xx_info("EndPoint Addr 0x%x, Alternate settings: %i\n",
 699                      dev->video_mode.end_point_addr,
 700                      dev->video_mode.num_alt);
 701         dev->video_mode.alt_max_pkt_size =
 702                 kmalloc(32 * dev->video_mode.num_alt, GFP_KERNEL);
 703
 704         if (dev->video_mode.alt_max_pkt_size == NULL) {
 705                 cx231xx_errdev("out of memory!\n");
 706                 cx231xx_devused &= ~(1 << nr);
 707                 v4l2_device_unregister(&dev->v4l2_dev);
 708                 kfree(dev);
 709                 return -ENOMEM;
 710         }
 711
 712         for (i = 0; i < dev->video_mode.num_alt; i++) {
 713                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].
 714                                 desc.wMaxPacketSize);
 715                 dev->video_mode.alt_max_pkt_size[i] =
 716                     (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
 717                 cx231xx_info("Alternate setting %i, max size= %i\n", i,
 718                              dev->video_mode.alt_max_pkt_size[i]);
 719         }
 720
 721         /* compute alternate max packet sizes for vbi */
 722         uif = udev->actconfig->interface[dev->current_pcb_config.
 723                                        hs_config_info[0].interface_info.
 724                                        vanc_index + 1];
 725
 726         dev->vbi_mode.end_point_addr =
 727             le16_to_cpu(uif->altsetting[0].endpoint[isoc_pipe].desc.
 728                         bEndpointAddress);
 729
 730         dev->vbi_mode.num_alt = uif->num_altsetting;
 731         cx231xx_info("EndPoint Addr 0x%x, Alternate settings: %i\n",
 732                      dev->vbi_mode.end_point_addr,
 733                      dev->vbi_mode.num_alt);
 734         dev->vbi_mode.alt_max_pkt_size =
 735             kmalloc(32 * dev->vbi_mode.num_alt, GFP_KERNEL);
 736
 737         if (dev->vbi_mode.alt_max_pkt_size == NULL) {
 738                 cx231xx_errdev("out of memory!\n");
 739                 cx231xx_devused &= ~(1 << nr);
 740                 v4l2_device_unregister(&dev->v4l2_dev);
 741                 kfree(dev);
 742                 return -ENOMEM;
 743         }
 744
 745         for (i = 0; i < dev->vbi_mode.num_alt; i++) {
 746                 u16 tmp =
 747                     le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].
 748                                 desc.wMaxPacketSize);
 749                 dev->vbi_mode.alt_max_pkt_size[i] =
 750                     (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
 751                 cx231xx_info("Alternate setting %i, max size= %i\n", i,
 752                              dev->vbi_mode.alt_max_pkt_size[i]);
 753         }
 754
 755         /* compute alternate max packet sizes for sliced CC */
 756         uif = udev->actconfig->interface[dev->current_pcb_config.
 757                                        hs_config_info[0].interface_info.
 758                                        hanc_index + 1];
 759
 760         dev->sliced_cc_mode.end_point_addr =
 761             le16_to_cpu(uif->altsetting[0].endpoint[isoc_pipe].desc.
 762                         bEndpointAddress);
 763
 764         dev->sliced_cc_mode.num_alt = uif->num_altsetting;
 765         cx231xx_info("EndPoint Addr 0x%x, Alternate settings: %i\n",
 766                      dev->sliced_cc_mode.end_point_addr,
 767                      dev->sliced_cc_mode.num_alt);
 768         dev->sliced_cc_mode.alt_max_pkt_size =
 769                 kmalloc(32 * dev->sliced_cc_mode.num_alt, GFP_KERNEL);
 770
 771         if (dev->sliced_cc_mode.alt_max_pkt_size == NULL) {
 772                 cx231xx_errdev("out of memory!\n");
 773                 cx231xx_devused &= ~(1 << nr);
 774                 v4l2_device_unregister(&dev->v4l2_dev);
 775                 kfree(dev);
 776                 return -ENOMEM;
 777         }
 778
 779         for (i = 0; i < dev->sliced_cc_mode.num_alt; i++) {
 780                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].
 781                                 desc.wMaxPacketSize);
 782                 dev->sliced_cc_mode.alt_max_pkt_size[i] =
 783                     (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
 784                 cx231xx_info("Alternate setting %i, max size= %i\n", i,
 785                              dev->sliced_cc_mode.alt_max_pkt_size[i]);
 786         }
 787
 788         if (dev->current_pcb_config.ts1_source != 0xff) {
 789                 /* compute alternate max packet sizes for TS1 */
 790                 uif = udev->actconfig->interface[dev->current_pcb_config.
 791                                                hs_config_info[0].
 792                                                interface_info.
 793                                                ts1_index + 1];
 794
 795                 dev->ts1_mode.end_point_addr =
 796                     le16_to_cpu(uif->altsetting[0].endpoint[isoc_pipe].
 797                                 desc.bEndpointAddress);
 798
 799                 dev->ts1_mode.num_alt = uif->num_altsetting;
 800                 cx231xx_info("EndPoint Addr 0x%x, Alternate settings: %i\n",
 801                              dev->ts1_mode.end_point_addr,
 802                              dev->ts1_mode.num_alt);
 803                 dev->ts1_mode.alt_max_pkt_size =
 804                         kmalloc(32 * dev->ts1_mode.num_alt, GFP_KERNEL);
 805
 806                 if (dev->ts1_mode.alt_max_pkt_size == NULL) {
 807                         cx231xx_errdev("out of memory!\n");
 808                         cx231xx_devused &= ~(1 << nr);
 809                         v4l2_device_unregister(&dev->v4l2_dev);
 810                         kfree(dev);
 811                         return -ENOMEM;
 812                 }
 813
 814                 for (i = 0; i < dev->ts1_mode.num_alt; i++) {
 815                         u16 tmp = le16_to_cpu(uif->altsetting[i].
 816                                                 endpoint[isoc_pipe].desc.
 817                                                 wMaxPacketSize);
 818                         dev->ts1_mode.alt_max_pkt_size[i] =
 819                             (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
 820                         cx231xx_info("Alternate setting %i, max size= %i\n", i,
 821                                      dev->ts1_mode.alt_max_pkt_size[i]);
 822                 }
 823         }
 824
 825         /* load other modules required */
 826         request_modules(dev);
 827
 828         return 0;
 829 }
 830
 831 /*
 832  * cx231xx_usb_disconnect()
 833  * called when the device gets diconencted
 834  * video device will be unregistered on v4l2_close in case it is still open
 835  */
 836 static void cx231xx_usb_disconnect(struct usb_interface *interface)
 837 {
 838         struct cx231xx *dev;
 839
 840         dev = usb_get_intfdata(interface);
 841         usb_set_intfdata(interface, NULL);
 842
 843         if (!dev)
 844                 return;
 845
 846         if (!dev->udev)
 847                 return;
 848
 849         /* delete v4l2 device */
 850         v4l2_device_unregister(&dev->v4l2_dev);
 851
 852         /* wait until all current v4l2 io is finished then deallocate
 853            resources */
 854         mutex_lock(&dev->lock);
 855
 856         wake_up_interruptible_all(&dev->open);
 857
 858         if (dev->users) {
 859                 cx231xx_warn
 860                     ("device %s is open! Deregistration and memory "
 861                      "deallocation are deferred on close.\n",
 862                      video_device_node_name(dev->vdev));
 863
 864                 dev->state |= DEV_MISCONFIGURED;
 865                 cx231xx_uninit_isoc(dev);
 866                 dev->state |= DEV_DISCONNECTED;
 867                 wake_up_interruptible(&dev->wait_frame);
 868                 wake_up_interruptible(&dev->wait_stream);
 869         } else {
 870                 dev->state |= DEV_DISCONNECTED;
 871                 cx231xx_release_resources(dev);
 872         }
 873
 874         cx231xx_close_extension(dev);
 875
 876         mutex_unlock(&dev->lock);
 877
 878         if (!dev->users) {
 879                 kfree(dev->video_mode.alt_max_pkt_size);
 880                 kfree(dev->vbi_mode.alt_max_pkt_size);
 881                 kfree(dev->sliced_cc_mode.alt_max_pkt_size);
 882                 kfree(dev->ts1_mode.alt_max_pkt_size);
 883                 kfree(dev);
 884         }
 885 }
 886
 887 static struct usb_driver cx231xx_usb_driver = {
 888         .name = "cx231xx",
 889         .probe = cx231xx_usb_probe,
 890         .disconnect = cx231xx_usb_disconnect,
 891         .id_table = cx231xx_id_table,
 892 };
 893
 894 static int __init cx231xx_module_init(void)
 895 {
 896         int result;
 897
 898         printk(KERN_INFO DRIVER_NAME " v4l2 driver loaded.\n");
 899
 900         /* register this driver with the USB subsystem */
 901         result = usb_register(&cx231xx_usb_driver);
 902         if (result)
 903                 cx231xx_err(DRIVER_NAME
 904                             " usb_register failed. Error number %d.\n", result);
 905
 906         return result;
 907 }
 908
 909 static void __exit cx231xx_module_exit(void)
 910 {
 911         /* deregister this driver with the USB subsystem */
 912         usb_deregister(&cx231xx_usb_driver);
 913 }
 914
 915 module_init(cx231xx_module_init);
 916 module_exit(cx231xx_module_exit);