drivers/staging/go7007/go7007-usb.c

   1 /*
   2  * Copyright (C) 2005-2006 Micronas USA Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License (Version 2) as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software Foundation,
  15  * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/wait.h>
  22 #include <linux/list.h>
  23 #include <linux/slab.h>
  24 #include <linux/time.h>
  25 #include <linux/mm.h>
  26 #include <linux/usb.h>
  27 #include <linux/i2c.h>
  28 #include <asm/byteorder.h>
  29 #include <media/tvaudio.h>
  30
  31 #include "go7007-priv.h"
  32 #include "wis-i2c.h"
  33
  34 static unsigned int assume_endura;
  35 module_param(assume_endura, int, 0644);
  36 MODULE_PARM_DESC(assume_endura, "when probing fails, hardware is a Pelco Endura");
  37
  38 /* #define GO7007_USB_DEBUG */
  39 /* #define GO7007_I2C_DEBUG */ /* for debugging the EZ-USB I2C adapter */
  40
  41 #define HPI_STATUS_ADDR 0xFFF4
  42 #define INT_PARAM_ADDR  0xFFF6
  43 #define INT_INDEX_ADDR  0xFFF8
  44
  45 /*
  46  * Pipes on EZ-USB interface:
  47  *      0 snd - Control
  48  *      0 rcv - Control
  49  *      2 snd - Download firmware (control)
  50  *      4 rcv - Read Interrupt (interrupt)
  51  *      6 rcv - Read Video (bulk)
  52  *      8 rcv - Read Audio (bulk)
  53  */
  54
  55 #define GO7007_USB_EZUSB                (1<<0)
  56 #define GO7007_USB_EZUSB_I2C            (1<<1)
  57
  58 struct go7007_usb_board {
  59         unsigned int flags;
  60         struct go7007_board_info main_info;
  61 };
  62
  63 struct go7007_usb {
  64         struct go7007_usb_board *board;
  65         struct semaphore i2c_lock;
  66         struct usb_device *usbdev;
  67         struct urb *video_urbs[8];
  68         struct urb *audio_urbs[8];
  69         struct urb *intr_urb;
  70 };
  71
  72 /*********************** Product specification data ***********************/
  73
  74 static struct go7007_usb_board board_matrix_ii = {
  75         .flags          = GO7007_USB_EZUSB,
  76         .main_info      = {
  77                 .firmware        = "go7007tv.bin",
  78                 .flags           = GO7007_BOARD_HAS_AUDIO |
  79                                         GO7007_BOARD_USE_ONBOARD_I2C,
  80                 .audio_flags     = GO7007_AUDIO_I2S_MODE_1 |
  81                                         GO7007_AUDIO_WORD_16,
  82                 .audio_rate      = 48000,
  83                 .audio_bclk_div  = 8,
  84                 .audio_main_div  = 2,
  85                 .hpi_buffer_cap  = 7,
  86                 .sensor_flags    = GO7007_SENSOR_656 |
  87                                         GO7007_SENSOR_VALID_ENABLE |
  88                                         GO7007_SENSOR_TV |
  89                                         GO7007_SENSOR_VBI |
  90                                         GO7007_SENSOR_SCALING,
  91                 .num_i2c_devs    = 1,
  92                 .i2c_devs        = {
  93                         {
  94                                 .id     = I2C_DRIVERID_WIS_SAA7115,
  95                                 .addr   = 0x20,
  96                         },
  97                 },
  98                 .num_inputs      = 2,
  99                 .inputs          = {
 100                         {
 101                                 .video_input    = 0,
 102                                 .name           = "Composite",
 103                         },
 104                         {
 105                                 .video_input    = 9,
 106                                 .name           = "S-Video",
 107                         },
 108                 },
 109         },
 110 };
 111
 112 static struct go7007_usb_board board_matrix_reload = {
 113         .flags          = GO7007_USB_EZUSB,
 114         .main_info      = {
 115                 .firmware        = "go7007tv.bin",
 116                 .flags           = GO7007_BOARD_HAS_AUDIO |
 117                                         GO7007_BOARD_USE_ONBOARD_I2C,
 118                 .audio_flags     = GO7007_AUDIO_I2S_MODE_1 |
 119                                         GO7007_AUDIO_I2S_MASTER |
 120                                         GO7007_AUDIO_WORD_16,
 121                 .audio_rate      = 48000,
 122                 .audio_bclk_div  = 8,
 123                 .audio_main_div  = 2,
 124                 .hpi_buffer_cap  = 7,
 125                 .sensor_flags    = GO7007_SENSOR_656 |
 126                                         GO7007_SENSOR_TV,
 127                 .num_i2c_devs    = 1,
 128                 .i2c_devs        = {
 129                         {
 130                                 .id     = I2C_DRIVERID_WIS_SAA7113,
 131                                 .addr   = 0x25,
 132                         },
 133                 },
 134                 .num_inputs      = 2,
 135                 .inputs          = {
 136                         {
 137                                 .video_input    = 0,
 138                                 .name           = "Composite",
 139                         },
 140                         {
 141                                 .video_input    = 9,
 142                                 .name           = "S-Video",
 143                         },
 144                 },
 145         },
 146 };
 147
 148 static struct go7007_usb_board board_star_trek = {
 149         .flags          = GO7007_USB_EZUSB | GO7007_USB_EZUSB_I2C,
 150         .main_info      = {
 151                 .firmware        = "go7007tv.bin",
 152                 .flags           = GO7007_BOARD_HAS_AUDIO, /* |
 153                                         GO7007_BOARD_HAS_TUNER, */
 154                 .sensor_flags    = GO7007_SENSOR_656 |
 155                                         GO7007_SENSOR_VALID_ENABLE |
 156                                         GO7007_SENSOR_TV |
 157                                         GO7007_SENSOR_VBI |
 158                                         GO7007_SENSOR_SCALING,
 159                 .audio_flags     = GO7007_AUDIO_I2S_MODE_1 |
 160                                         GO7007_AUDIO_WORD_16,
 161                 .audio_bclk_div  = 8,
 162                 .audio_main_div  = 2,
 163                 .hpi_buffer_cap  = 7,
 164                 .num_i2c_devs    = 1,
 165                 .i2c_devs        = {
 166                         {
 167                                 .id     = I2C_DRIVERID_WIS_SAA7115,
 168                                 .addr   = 0x20,
 169                         },
 170                 },
 171                 .num_inputs      = 2,
 172                 .inputs          = {
 173                         {
 174                                 .video_input    = 1,
 175                         /*      .audio_input    = AUDIO_EXTERN, */
 176                                 .name           = "Composite",
 177                         },
 178                         {
 179                                 .video_input    = 8,
 180                         /*      .audio_input    = AUDIO_EXTERN, */
 181                                 .name           = "S-Video",
 182                         },
 183                 /*      {
 184                  *              .video_input    = 3,
 185                  *              .audio_input    = AUDIO_TUNER,
 186                  *              .name           = "Tuner",
 187                  *      },
 188                  */
 189                 },
 190         },
 191 };
 192
 193 static struct go7007_usb_board board_px_tv402u = {
 194         .flags          = GO7007_USB_EZUSB | GO7007_USB_EZUSB_I2C,
 195         .main_info      = {
 196                 .firmware        = "go7007tv.bin",
 197                 .flags           = GO7007_BOARD_HAS_AUDIO |
 198                                         GO7007_BOARD_HAS_TUNER,
 199                 .sensor_flags    = GO7007_SENSOR_656 |
 200                                         GO7007_SENSOR_VALID_ENABLE |
 201                                         GO7007_SENSOR_TV |
 202                                         GO7007_SENSOR_VBI |
 203                                         GO7007_SENSOR_SCALING,
 204                 .audio_flags     = GO7007_AUDIO_I2S_MODE_1 |
 205                                         GO7007_AUDIO_WORD_16,
 206                 .audio_bclk_div  = 8,
 207                 .audio_main_div  = 2,
 208                 .hpi_buffer_cap  = 7,
 209                 .num_i2c_devs    = 3,
 210                 .i2c_devs        = {
 211                         {
 212                                 .id     = I2C_DRIVERID_WIS_SAA7115,
 213                                 .addr   = 0x20,
 214                         },
 215                         {
 216                                 .id     = I2C_DRIVERID_WIS_UDA1342,
 217                                 .addr   = 0x1a,
 218                         },
 219                         {
 220                                 .id     = I2C_DRIVERID_WIS_SONY_TUNER,
 221                                 .addr   = 0x60,
 222                         },
 223                 },
 224                 .num_inputs      = 3,
 225                 .inputs          = {
 226                         {
 227                                 .video_input    = 1,
 228                 .audio_input     = TVAUDIO_INPUT_EXTERN,
 229                                 .name           = "Composite",
 230                         },
 231                         {
 232                                 .video_input    = 8,
 233                                 .audio_input    = TVAUDIO_INPUT_EXTERN,
 234                                 .name           = "S-Video",
 235                         },
 236                         {
 237                                 .video_input    = 3,
 238                                 .audio_input    = TVAUDIO_INPUT_TUNER,
 239                                 .name           = "Tuner",
 240                         },
 241                 },
 242         },
 243 };
 244
 245 static struct go7007_usb_board board_xmen = {
 246         .flags          = 0,
 247         .main_info      = {
 248                 .firmware         = "go7007tv.bin",
 249                 .flags            = GO7007_BOARD_USE_ONBOARD_I2C,
 250                 .hpi_buffer_cap   = 0,
 251                 .sensor_flags     = GO7007_SENSOR_VREF_POLAR,
 252                 .sensor_width     = 320,
 253                 .sensor_height    = 240,
 254                 .sensor_framerate = 30030,
 255                 .audio_flags      = GO7007_AUDIO_ONE_CHANNEL |
 256                                         GO7007_AUDIO_I2S_MODE_3 |
 257                                         GO7007_AUDIO_WORD_14 |
 258                                         GO7007_AUDIO_I2S_MASTER |
 259                                         GO7007_AUDIO_BCLK_POLAR |
 260                                         GO7007_AUDIO_OKI_MODE,
 261                 .audio_rate       = 8000,
 262                 .audio_bclk_div   = 48,
 263                 .audio_main_div   = 1,
 264                 .num_i2c_devs     = 1,
 265                 .i2c_devs         = {
 266                         {
 267                                 .id     = I2C_DRIVERID_WIS_OV7640,
 268                                 .addr   = 0x21,
 269                         },
 270                 },
 271                 .num_inputs       = 1,
 272                 .inputs           = {
 273                         {
 274                                 .name           = "Camera",
 275                         },
 276                 },
 277         },
 278 };
 279
 280 static struct go7007_usb_board board_matrix_revolution = {
 281         .flags          = GO7007_USB_EZUSB,
 282         .main_info      = {
 283                 .firmware        = "go7007tv.bin",
 284                 .flags           = GO7007_BOARD_HAS_AUDIO |
 285                                         GO7007_BOARD_USE_ONBOARD_I2C,
 286                 .audio_flags     = GO7007_AUDIO_I2S_MODE_1 |
 287                                         GO7007_AUDIO_I2S_MASTER |
 288                                         GO7007_AUDIO_WORD_16,
 289                 .audio_rate      = 48000,
 290                 .audio_bclk_div  = 8,
 291                 .audio_main_div  = 2,
 292                 .hpi_buffer_cap  = 7,
 293                 .sensor_flags    = GO7007_SENSOR_656 |
 294                                         GO7007_SENSOR_TV |
 295                                         GO7007_SENSOR_VBI,
 296                 .num_i2c_devs    = 1,
 297                 .i2c_devs        = {
 298                         {
 299                                 .id     = I2C_DRIVERID_WIS_TW9903,
 300                                 .addr   = 0x44,
 301                         },
 302                 },
 303                 .num_inputs      = 2,
 304                 .inputs          = {
 305                         {
 306                                 .video_input    = 2,
 307                                 .name           = "Composite",
 308                         },
 309                         {
 310                                 .video_input    = 8,
 311                                 .name           = "S-Video",
 312                         },
 313                 },
 314         },
 315 };
 316
 317 static struct go7007_usb_board board_lifeview_lr192 = {
 318         .flags          = GO7007_USB_EZUSB,
 319         .main_info      = {
 320                 .firmware        = "go7007tv.bin",
 321                 .flags           = GO7007_BOARD_HAS_AUDIO |
 322                                         GO7007_BOARD_USE_ONBOARD_I2C,
 323                 .audio_flags     = GO7007_AUDIO_I2S_MODE_1 |
 324                                         GO7007_AUDIO_WORD_16,
 325                 .audio_rate      = 48000,
 326                 .audio_bclk_div  = 8,
 327                 .audio_main_div  = 2,
 328                 .hpi_buffer_cap  = 7,
 329                 .sensor_flags    = GO7007_SENSOR_656 |
 330                                         GO7007_SENSOR_VALID_ENABLE |
 331                                         GO7007_SENSOR_TV |
 332                                         GO7007_SENSOR_VBI |
 333                                         GO7007_SENSOR_SCALING,
 334                 .num_i2c_devs    = 0,
 335                 .num_inputs      = 1,
 336                 .inputs          = {
 337                         {
 338                                 .video_input    = 0,
 339                                 .name           = "Composite",
 340                         },
 341                 },
 342         },
 343 };
 344
 345 static struct go7007_usb_board board_endura = {
 346         .flags          = 0,
 347         .main_info      = {
 348                 .firmware        = "go7007tv.bin",
 349                 .flags           = 0,
 350                 .audio_flags     = GO7007_AUDIO_I2S_MODE_1 |
 351                                         GO7007_AUDIO_I2S_MASTER |
 352                                         GO7007_AUDIO_WORD_16,
 353                 .audio_rate      = 8000,
 354                 .audio_bclk_div  = 48,
 355                 .audio_main_div  = 8,
 356                 .hpi_buffer_cap  = 0,
 357                 .sensor_flags    = GO7007_SENSOR_656 |
 358                                         GO7007_SENSOR_TV,
 359                 .sensor_h_offset = 8,
 360                 .num_i2c_devs    = 0,
 361                 .num_inputs      = 1,
 362                 .inputs          = {
 363                         {
 364                                 .name           = "Camera",
 365                         },
 366                 },
 367         },
 368 };
 369
 370 static struct go7007_usb_board board_adlink_mpg24 = {
 371         .flags          = 0,
 372         .main_info      = {
 373                 .firmware        = "go7007tv.bin",
 374                 .flags           = GO7007_BOARD_USE_ONBOARD_I2C,
 375                 .audio_flags     = GO7007_AUDIO_I2S_MODE_1 |
 376                                         GO7007_AUDIO_I2S_MASTER |
 377                                         GO7007_AUDIO_WORD_16,
 378                 .audio_rate      = 48000,
 379                 .audio_bclk_div  = 8,
 380                 .audio_main_div  = 2,
 381                 .hpi_buffer_cap  = 0,
 382                 .sensor_flags    = GO7007_SENSOR_656 |
 383                                         GO7007_SENSOR_TV |
 384                                         GO7007_SENSOR_VBI,
 385                 .num_i2c_devs    = 1,
 386                 .i2c_devs        = {
 387                         {
 388                                 .id     = I2C_DRIVERID_WIS_TW2804,
 389                                 .addr   = 0x00, /* yes, really */
 390                         },
 391                 },
 392                 .num_inputs      = 1,
 393                 .inputs          = {
 394                         {
 395                                 .name           = "Composite",
 396                         },
 397                 },
 398         },
 399 };
 400
 401 static struct usb_device_id go7007_usb_id_table[] = {
 402         {
 403                 .match_flags    = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION |
 404                                         USB_DEVICE_ID_MATCH_INT_INFO,
 405                 .idVendor       = 0x0eb1,  /* Vendor ID of WIS Technologies */
 406                 .idProduct      = 0x7007,  /* Product ID of GO7007SB chip */
 407                 .bcdDevice_lo   = 0x200,   /* Revision number of XMen */
 408                 .bcdDevice_hi   = 0x200,
 409                 .bInterfaceClass        = 255,
 410                 .bInterfaceSubClass     = 0,
 411                 .bInterfaceProtocol     = 255,
 412                 .driver_info    = (kernel_ulong_t)GO7007_BOARDID_XMEN,
 413         },
 414         {
 415                 .match_flags    = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION,
 416                 .idVendor       = 0x0eb1,  /* Vendor ID of WIS Technologies */
 417                 .idProduct      = 0x7007,  /* Product ID of GO7007SB chip */
 418                 .bcdDevice_lo   = 0x202,   /* Revision number of Matrix II */
 419                 .bcdDevice_hi   = 0x202,
 420                 .driver_info    = (kernel_ulong_t)GO7007_BOARDID_MATRIX_II,
 421         },
 422         {
 423                 .match_flags    = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION,
 424                 .idVendor       = 0x0eb1,  /* Vendor ID of WIS Technologies */
 425                 .idProduct      = 0x7007,  /* Product ID of GO7007SB chip */
 426                 .bcdDevice_lo   = 0x204,   /* Revision number of Matrix */
 427                 .bcdDevice_hi   = 0x204,   /*     Reloaded */
 428                 .driver_info    = (kernel_ulong_t)GO7007_BOARDID_MATRIX_RELOAD,
 429         },
 430         {
 431                 .match_flags    = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION |
 432                                         USB_DEVICE_ID_MATCH_INT_INFO,
 433                 .idVendor       = 0x0eb1,  /* Vendor ID of WIS Technologies */
 434                 .idProduct      = 0x7007,  /* Product ID of GO7007SB chip */
 435                 .bcdDevice_lo   = 0x205,   /* Revision number of XMen-II */
 436                 .bcdDevice_hi   = 0x205,
 437                 .bInterfaceClass        = 255,
 438                 .bInterfaceSubClass     = 0,
 439                 .bInterfaceProtocol     = 255,
 440                 .driver_info    = (kernel_ulong_t)GO7007_BOARDID_XMEN_II,
 441         },
 442         {
 443                 .match_flags    = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION,
 444                 .idVendor       = 0x0eb1,  /* Vendor ID of WIS Technologies */
 445                 .idProduct      = 0x7007,  /* Product ID of GO7007SB chip */
 446                 .bcdDevice_lo   = 0x208,   /* Revision number of Star Trek */
 447                 .bcdDevice_hi   = 0x208,
 448                 .driver_info    = (kernel_ulong_t)GO7007_BOARDID_STAR_TREK,
 449         },
 450         {
 451                 .match_flags    = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION |
 452                                         USB_DEVICE_ID_MATCH_INT_INFO,
 453                 .idVendor       = 0x0eb1,  /* Vendor ID of WIS Technologies */
 454                 .idProduct      = 0x7007,  /* Product ID of GO7007SB chip */
 455                 .bcdDevice_lo   = 0x209,   /* Revision number of XMen-III */
 456                 .bcdDevice_hi   = 0x209,
 457                 .bInterfaceClass        = 255,
 458                 .bInterfaceSubClass     = 0,
 459                 .bInterfaceProtocol     = 255,
 460                 .driver_info    = (kernel_ulong_t)GO7007_BOARDID_XMEN_III,
 461         },
 462         {
 463                 .match_flags    = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION,
 464                 .idVendor       = 0x0eb1,  /* Vendor ID of WIS Technologies */
 465                 .idProduct      = 0x7007,  /* Product ID of GO7007SB chip */
 466                 .bcdDevice_lo   = 0x210,   /* Revision number of Matrix */
 467                 .bcdDevice_hi   = 0x210,   /*     Revolution */
 468                 .driver_info    = (kernel_ulong_t)GO7007_BOARDID_MATRIX_REV,
 469         },
 470         {
 471                 .match_flags    = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION,
 472                 .idVendor       = 0x093b,  /* Vendor ID of Plextor */
 473                 .idProduct      = 0xa102,  /* Product ID of M402U */
 474                 .bcdDevice_lo   = 0x1,     /* revision number of Blueberry */
 475                 .bcdDevice_hi   = 0x1,
 476                 .driver_info    = (kernel_ulong_t)GO7007_BOARDID_PX_M402U,
 477         },
 478         {
 479                 .match_flags    = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION,
 480                 .idVendor       = 0x093b,  /* Vendor ID of Plextor */
 481                 .idProduct      = 0xa104,  /* Product ID of TV402U */
 482                 .bcdDevice_lo   = 0x1,
 483                 .bcdDevice_hi   = 0x1,
 484                 .driver_info    = (kernel_ulong_t)GO7007_BOARDID_PX_TV402U_ANY,
 485         },
 486         {
 487                 .match_flags    = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION,
 488                 .idVendor       = 0x10fd,  /* Vendor ID of Anubis Electronics */
 489                 .idProduct      = 0xde00,  /* Product ID of Lifeview LR192 */
 490                 .bcdDevice_lo   = 0x1,
 491                 .bcdDevice_hi   = 0x1,
 492                 .driver_info    = (kernel_ulong_t)GO7007_BOARDID_LIFEVIEW_LR192,
 493         },
 494         { }                                     /* Terminating entry */
 495 };
 496
 497 MODULE_DEVICE_TABLE(usb, go7007_usb_id_table);
 498
 499 /********************* Driver for EZ-USB HPI interface *********************/
 500
 501 static int go7007_usb_vendor_request(struct go7007 *go, int request,
 502                 int value, int index, void *transfer_buffer, int length, int in)
 503 {
 504         struct go7007_usb *usb = go->hpi_context;
 505         int timeout = 5000;
 506
 507         if (in) {
 508                 return usb_control_msg(usb->usbdev,
 509                                 usb_rcvctrlpipe(usb->usbdev, 0), request,
 510                                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 511                                 value, index, transfer_buffer, length, timeout);
 512         } else {
 513                 return usb_control_msg(usb->usbdev,
 514                                 usb_sndctrlpipe(usb->usbdev, 0), request,
 515                                 USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 516                                 value, index, transfer_buffer, length, timeout);
 517         }
 518 }
 519
 520 static int go7007_usb_interface_reset(struct go7007 *go)
 521 {
 522         struct go7007_usb *usb = go->hpi_context;
 523         u16 intr_val, intr_data;
 524
 525         /* Reset encoder */
 526         if (go7007_write_interrupt(go, 0x0001, 0x0001) < 0)
 527                 return -1;
 528         msleep(100);
 529
 530         if (usb->board->flags & GO7007_USB_EZUSB) {
 531                 /* Reset buffer in EZ-USB */
 532 #ifdef GO7007_USB_DEBUG
 533                 printk(KERN_DEBUG "go7007-usb: resetting EZ-USB buffers\n");
 534 #endif
 535                 if (go7007_usb_vendor_request(go, 0x10, 0, 0, NULL, 0, 0) < 0 ||
 536                     go7007_usb_vendor_request(go, 0x10, 0, 0, NULL, 0, 0) < 0)
 537                         return -1;
 538
 539                 /* Reset encoder again */
 540                 if (go7007_write_interrupt(go, 0x0001, 0x0001) < 0)
 541                         return -1;
 542                 msleep(100);
 543         }
 544
 545         /* Wait for an interrupt to indicate successful hardware reset */
 546         if (go7007_read_interrupt(go, &intr_val, &intr_data) < 0 ||
 547                         (intr_val & ~0x1) != 0x55aa) {
 548                 printk(KERN_ERR
 549                         "go7007-usb: unable to reset the USB interface\n");
 550                 return -1;
 551         }
 552         return 0;
 553 }
 554
 555 static int go7007_usb_ezusb_write_interrupt(struct go7007 *go,
 556                                                 int addr, int data)
 557 {
 558         struct go7007_usb *usb = go->hpi_context;
 559         int i, r;
 560         u16 status_reg;
 561         int timeout = 500;
 562
 563 #ifdef GO7007_USB_DEBUG
 564         printk(KERN_DEBUG
 565                 "go7007-usb: WriteInterrupt: %04x %04x\n", addr, data);
 566 #endif
 567
 568         for (i = 0; i < 100; ++i) {
 569                 r = usb_control_msg(usb->usbdev,
 570                                 usb_rcvctrlpipe(usb->usbdev, 0), 0x14,
 571                                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 572                                 0, HPI_STATUS_ADDR, &status_reg,
 573                                 sizeof(status_reg), timeout);
 574                 if (r < 0)
 575                         goto write_int_error;
 576                 __le16_to_cpus(&status_reg);
 577                 if (!(status_reg & 0x0010))
 578                         break;
 579                 msleep(10);
 580         }
 581         if (i == 100) {
 582                 printk(KERN_ERR
 583                         "go7007-usb: device is hung, status reg = 0x%04x\n",
 584                         status_reg);
 585                 return -1;
 586         }
 587         r = usb_control_msg(usb->usbdev, usb_sndctrlpipe(usb->usbdev, 0), 0x12,
 588                         USB_TYPE_VENDOR | USB_RECIP_DEVICE, data,
 589                         INT_PARAM_ADDR, NULL, 0, timeout);
 590         if (r < 0)
 591                 goto write_int_error;
 592         r = usb_control_msg(usb->usbdev, usb_sndctrlpipe(usb->usbdev, 0),
 593                         0x12, USB_TYPE_VENDOR | USB_RECIP_DEVICE, addr,
 594                         INT_INDEX_ADDR, NULL, 0, timeout);
 595         if (r < 0)
 596                 goto write_int_error;
 597         return 0;
 598
 599 write_int_error:
 600         printk(KERN_ERR "go7007-usb: error in WriteInterrupt: %d\n", r);
 601         return r;
 602 }
 603
 604 static int go7007_usb_onboard_write_interrupt(struct go7007 *go,
 605                                                 int addr, int data)
 606 {
 607         struct go7007_usb *usb = go->hpi_context;
 608         u8 *tbuf;
 609         int r;
 610         int timeout = 500;
 611
 612 #ifdef GO7007_USB_DEBUG
 613         printk(KERN_DEBUG
 614                 "go7007-usb: WriteInterrupt: %04x %04x\n", addr, data);
 615 #endif
 616
 617         tbuf = kmalloc(8, GFP_KERNEL);
 618         if (tbuf == NULL)
 619                 return -ENOMEM;
 620         memset(tbuf, 0, 8);
 621         tbuf[0] = data & 0xff;
 622         tbuf[1] = data >> 8;
 623         tbuf[2] = addr & 0xff;
 624         tbuf[3] = addr >> 8;
 625         r = usb_control_msg(usb->usbdev, usb_sndctrlpipe(usb->usbdev, 2), 0x00,
 626                         USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, 0x55aa,
 627                         0xf0f0, tbuf, 8, timeout);
 628         kfree(tbuf);
 629         if (r < 0) {
 630                 printk(KERN_ERR "go7007-usb: error in WriteInterrupt: %d\n", r);
 631                 return r;
 632         }
 633         return 0;
 634 }
 635
 636 static void go7007_usb_readinterrupt_complete(struct urb *urb)
 637 {
 638         struct go7007 *go = (struct go7007 *)urb->context;
 639         u16 *regs = (u16 *)urb->transfer_buffer;
 640
 641         if (urb->status != 0) {
 642                 if (urb->status != -ESHUTDOWN &&
 643                                 go->status != STATUS_SHUTDOWN) {
 644                         printk(KERN_ERR
 645                                 "go7007-usb: error in read interrupt: %d\n",
 646                                 urb->status);
 647                 } else {
 648                         wake_up(&go->interrupt_waitq);
 649                         return;
 650                 }
 651         } else if (urb->actual_length != urb->transfer_buffer_length) {
 652                 printk(KERN_ERR "go7007-usb: short read in interrupt pipe!\n");
 653         } else {
 654                 go->interrupt_available = 1;
 655                 go->interrupt_data = __le16_to_cpu(regs[0]);
 656                 go->interrupt_value = __le16_to_cpu(regs[1]);
 657 #ifdef GO7007_USB_DEBUG
 658                 printk(KERN_DEBUG "go7007-usb: ReadInterrupt: %04x %04x\n",
 659                                 go->interrupt_value, go->interrupt_data);
 660 #endif
 661         }
 662
 663         wake_up(&go->interrupt_waitq);
 664 }
 665
 666 static int go7007_usb_read_interrupt(struct go7007 *go)
 667 {
 668         struct go7007_usb *usb = go->hpi_context;
 669         int r;
 670
 671         r = usb_submit_urb(usb->intr_urb, GFP_KERNEL);
 672         if (r < 0) {
 673                 printk(KERN_ERR
 674                         "go7007-usb: unable to submit interrupt urb: %d\n", r);
 675                 return r;
 676         }
 677         return 0;
 678 }
 679
 680 static void go7007_usb_read_video_pipe_complete(struct urb *urb)
 681 {
 682         struct go7007 *go = (struct go7007 *)urb->context;
 683         int r;
 684
 685         if (!go->streaming) {
 686                 wake_up_interruptible(&go->frame_waitq);
 687                 return;
 688         }
 689         if (urb->status != 0) {
 690                 printk(KERN_ERR "go7007-usb: error in video pipe: %d\n",
 691                                 urb->status);
 692                 return;
 693         }
 694         if (urb->actual_length != urb->transfer_buffer_length) {
 695                 printk(KERN_ERR "go7007-usb: short read in video pipe!\n");
 696                 return;
 697         }
 698         go7007_parse_video_stream(go, urb->transfer_buffer, urb->actual_length);
 699         r = usb_submit_urb(urb, GFP_ATOMIC);
 700         if (r < 0)
 701                 printk(KERN_ERR "go7007-usb: error in video pipe: %d\n", r);
 702 }
 703
 704 static void go7007_usb_read_audio_pipe_complete(struct urb *urb)
 705 {
 706         struct go7007 *go = (struct go7007 *)urb->context;
 707         int r;
 708
 709         if (!go->streaming)
 710                 return;
 711         if (urb->status != 0) {
 712                 printk(KERN_ERR "go7007-usb: error in audio pipe: %d\n",
 713                                 urb->status);
 714                 return;
 715         }
 716         if (urb->actual_length != urb->transfer_buffer_length) {
 717                 printk(KERN_ERR "go7007-usb: short read in audio pipe!\n");
 718                 return;
 719         }
 720         if (go->audio_deliver != NULL)
 721                 go->audio_deliver(go, urb->transfer_buffer, urb->actual_length);
 722         r = usb_submit_urb(urb, GFP_ATOMIC);
 723         if (r < 0)
 724                 printk(KERN_ERR "go7007-usb: error in audio pipe: %d\n", r);
 725 }
 726
 727 static int go7007_usb_stream_start(struct go7007 *go)
 728 {
 729         struct go7007_usb *usb = go->hpi_context;
 730         int i, r;
 731
 732         for (i = 0; i < 8; ++i) {
 733                 r = usb_submit_urb(usb->video_urbs[i], GFP_KERNEL);
 734                 if (r < 0) {
 735                         printk(KERN_ERR "go7007-usb: error submitting video "
 736                                         "urb %d: %d\n", i, r);
 737                         goto video_submit_failed;
 738                 }
 739         }
 740         if (!go->audio_enabled)
 741                 return 0;
 742
 743         for (i = 0; i < 8; ++i) {
 744                 r = usb_submit_urb(usb->audio_urbs[i], GFP_KERNEL);
 745                 if (r < 0) {
 746                         printk(KERN_ERR "go7007-usb: error submitting audio "
 747                                         "urb %d: %d\n", i, r);
 748                         goto audio_submit_failed;
 749                 }
 750         }
 751         return 0;
 752
 753 audio_submit_failed:
 754         for (i = 0; i < 8; ++i)
 755                 usb_kill_urb(usb->audio_urbs[i]);
 756 video_submit_failed:
 757         for (i = 0; i < 8; ++i)
 758                 usb_kill_urb(usb->video_urbs[i]);
 759         return -1;
 760 }
 761
 762 static int go7007_usb_stream_stop(struct go7007 *go)
 763 {
 764         struct go7007_usb *usb = go->hpi_context;
 765         int i;
 766
 767         if (go->status == STATUS_SHUTDOWN)
 768                 return 0;
 769         for (i = 0; i < 8; ++i)
 770                 usb_kill_urb(usb->video_urbs[i]);
 771         if (go->audio_enabled)
 772                 for (i = 0; i < 8; ++i)
 773                         usb_kill_urb(usb->audio_urbs[i]);
 774         return 0;
 775 }
 776
 777 static int go7007_usb_send_firmware(struct go7007 *go, u8 *data, int len)
 778 {
 779         struct go7007_usb *usb = go->hpi_context;
 780         int transferred, pipe;
 781         int timeout = 500;
 782
 783 #ifdef GO7007_USB_DEBUG
 784         printk(KERN_DEBUG "go7007-usb: DownloadBuffer sending %d bytes\n", len);
 785 #endif
 786
 787         if (usb->board->flags & GO7007_USB_EZUSB)
 788                 pipe = usb_sndbulkpipe(usb->usbdev, 2);
 789         else
 790                 pipe = usb_sndbulkpipe(usb->usbdev, 3);
 791
 792         return usb_bulk_msg(usb->usbdev, pipe, data, len,
 793                                         &transferred, timeout);
 794 }
 795
 796 static struct go7007_hpi_ops go7007_usb_ezusb_hpi_ops = {
 797         .interface_reset        = go7007_usb_interface_reset,
 798         .write_interrupt        = go7007_usb_ezusb_write_interrupt,
 799         .read_interrupt         = go7007_usb_read_interrupt,
 800         .stream_start           = go7007_usb_stream_start,
 801         .stream_stop            = go7007_usb_stream_stop,
 802         .send_firmware          = go7007_usb_send_firmware,
 803 };
 804
 805 static struct go7007_hpi_ops go7007_usb_onboard_hpi_ops = {
 806         .interface_reset        = go7007_usb_interface_reset,
 807         .write_interrupt        = go7007_usb_onboard_write_interrupt,
 808         .read_interrupt         = go7007_usb_read_interrupt,
 809         .stream_start           = go7007_usb_stream_start,
 810         .stream_stop            = go7007_usb_stream_stop,
 811         .send_firmware          = go7007_usb_send_firmware,
 812 };
 813
 814 /********************* Driver for EZ-USB I2C adapter *********************/
 815
 816 static int go7007_usb_i2c_master_xfer(struct i2c_adapter *adapter,
 817                                         struct i2c_msg msgs[], int num)
 818 {
 819         struct go7007 *go = i2c_get_adapdata(adapter);
 820         struct go7007_usb *usb = go->hpi_context;
 821         u8 buf[16];
 822         int buf_len, i;
 823         int ret = -1;
 824
 825         if (go->status == STATUS_SHUTDOWN)
 826                 return -1;
 827
 828         down(&usb->i2c_lock);
 829
 830         for (i = 0; i < num; ++i) {
 831                 /* The hardware command is "write some bytes then read some
 832                  * bytes", so we try to coalesce a write followed by a read
 833                  * into a single USB transaction */
 834                 if (i + 1 < num && msgs[i].addr == msgs[i + 1].addr &&
 835                                 !(msgs[i].flags & I2C_M_RD) &&
 836                                 (msgs[i + 1].flags & I2C_M_RD)) {
 837 #ifdef GO7007_I2C_DEBUG
 838                         printk(KERN_DEBUG "go7007-usb: i2c write/read %d/%d "
 839                                         "bytes on %02x\n", msgs[i].len,
 840                                         msgs[i + 1].len, msgs[i].addr);
 841 #endif
 842                         buf[0] = 0x01;
 843                         buf[1] = msgs[i].len + 1;
 844                         buf[2] = msgs[i].addr << 1;
 845                         memcpy(&buf[3], msgs[i].buf, msgs[i].len);
 846                         buf_len = msgs[i].len + 3;
 847                         buf[buf_len++] = msgs[++i].len;
 848                 } else if (msgs[i].flags & I2C_M_RD) {
 849 #ifdef GO7007_I2C_DEBUG
 850                         printk(KERN_DEBUG "go7007-usb: i2c read %d "
 851                                         "bytes on %02x\n", msgs[i].len,
 852                                         msgs[i].addr);
 853 #endif
 854                         buf[0] = 0x01;
 855                         buf[1] = 1;
 856                         buf[2] = msgs[i].addr << 1;
 857                         buf[3] = msgs[i].len;
 858                         buf_len = 4;
 859                 } else {
 860 #ifdef GO7007_I2C_DEBUG
 861                         printk(KERN_DEBUG "go7007-usb: i2c write %d "
 862                                         "bytes on %02x\n", msgs[i].len,
 863                                         msgs[i].addr);
 864 #endif
 865                         buf[0] = 0x00;
 866                         buf[1] = msgs[i].len + 1;
 867                         buf[2] = msgs[i].addr << 1;
 868                         memcpy(&buf[3], msgs[i].buf, msgs[i].len);
 869                         buf_len = msgs[i].len + 3;
 870                         buf[buf_len++] = 0;
 871                 }
 872                 if (go7007_usb_vendor_request(go, 0x24, 0, 0,
 873                                                 buf, buf_len, 0) < 0)
 874                         goto i2c_done;
 875                 if (msgs[i].flags & I2C_M_RD) {
 876                         memset(buf, 0, sizeof(buf));
 877                         if (go7007_usb_vendor_request(go, 0x25, 0, 0, buf,
 878                                                 msgs[i].len + 1, 1) < 0)
 879                                 goto i2c_done;
 880                         memcpy(msgs[i].buf, buf + 1, msgs[i].len);
 881                 }
 882         }
 883         ret = 0;
 884
 885 i2c_done:
 886         up(&usb->i2c_lock);
 887         return ret;
 888 }
 889
 890 static u32 go7007_usb_functionality(struct i2c_adapter *adapter)
 891 {
 892         /* No errors are reported by the hardware, so we don't bother
 893          * supporting quick writes to avoid confusing probing */
 894         return (I2C_FUNC_SMBUS_EMUL) & ~I2C_FUNC_SMBUS_QUICK;
 895 }
 896
 897 static struct i2c_algorithm go7007_usb_algo = {
 898         .master_xfer    = go7007_usb_i2c_master_xfer,
 899         .functionality  = go7007_usb_functionality,
 900 };
 901
 902 static struct i2c_adapter go7007_usb_adap_templ = {
 903         .owner                  = THIS_MODULE,
 904         .class                  = I2C_CLASS_TV_ANALOG,
 905         .name                   = "WIS GO7007SB EZ-USB",
 906         .id                     = I2C_ALGO_GO7007_USB,
 907         .algo                   = &go7007_usb_algo,
 908 };
 909
 910 /********************* USB add/remove functions *********************/
 911
 912 static int go7007_usb_probe(struct usb_interface *intf,
 913                 const struct usb_device_id *id)
 914 {
 915         struct go7007 *go;
 916         struct go7007_usb *usb;
 917         struct go7007_usb_board *board;
 918         struct usb_device *usbdev = interface_to_usbdev(intf);
 919         char *name;
 920         int video_pipe, i, v_urb_len;
 921
 922         printk(KERN_DEBUG "go7007-usb: probing new GO7007 USB board\n");
 923
 924         switch (id->driver_info) {
 925         case GO7007_BOARDID_MATRIX_II:
 926                 name = "WIS Matrix II or compatible";
 927                 board = &board_matrix_ii;
 928                 break;
 929         case GO7007_BOARDID_MATRIX_RELOAD:
 930                 name = "WIS Matrix Reloaded or compatible";
 931                 board = &board_matrix_reload;
 932                 break;
 933         case GO7007_BOARDID_MATRIX_REV:
 934                 name = "WIS Matrix Revolution or compatible";
 935                 board = &board_matrix_revolution;
 936                 break;
 937         case GO7007_BOARDID_STAR_TREK:
 938                 name = "WIS Star Trek or compatible";
 939                 board = &board_star_trek;
 940                 break;
 941         case GO7007_BOARDID_XMEN:
 942                 name = "WIS XMen or compatible";
 943                 board = &board_xmen;
 944                 break;
 945         case GO7007_BOARDID_XMEN_II:
 946                 name = "WIS XMen II or compatible";
 947                 board = &board_xmen;
 948                 break;
 949         case GO7007_BOARDID_XMEN_III:
 950                 name = "WIS XMen III or compatible";
 951                 board = &board_xmen;
 952                 break;
 953         case GO7007_BOARDID_PX_M402U:
 954                 name = "Plextor PX-M402U";
 955                 board = &board_matrix_ii;
 956                 break;
 957         case GO7007_BOARDID_PX_TV402U_ANY:
 958                 name = "Plextor PX-TV402U (unknown tuner)";
 959                 board = &board_px_tv402u;
 960                 break;
 961         case GO7007_BOARDID_LIFEVIEW_LR192:
 962                 printk(KERN_ERR "go7007-usb: The Lifeview TV Walker Ultra "
 963                                 "is not supported.  Sorry!\n");
 964                 return 0;
 965                 name = "Lifeview TV Walker Ultra";
 966                 board = &board_lifeview_lr192;
 967                 break;
 968         default:
 969                 printk(KERN_ERR "go7007-usb: unknown board ID %d!\n",
 970                                 (unsigned int)id->driver_info);
 971                 return 0;
 972         }
 973
 974         usb = kmalloc(sizeof(struct go7007_usb), GFP_KERNEL);
 975         if (usb == NULL)
 976                 return -ENOMEM;
 977         memset(usb, 0, sizeof(struct go7007_usb));
 978
 979         /* Allocate the URB and buffer for receiving incoming interrupts */
 980         usb->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
 981         if (usb->intr_urb == NULL)
 982                 goto allocfail;
 983         usb->intr_urb->transfer_buffer = kmalloc(2*sizeof(u16), GFP_KERNEL);
 984         if (usb->intr_urb->transfer_buffer == NULL)
 985                 goto allocfail;
 986
 987         go = go7007_alloc(&board->main_info, &intf->dev);
 988         if (go == NULL)
 989                 goto allocfail;
 990         usb->board = board;
 991         usb->usbdev = usbdev;
 992         go->board_id = id->driver_info;
 993         strncpy(go->name, name, sizeof(go->name));
 994         if (board->flags & GO7007_USB_EZUSB)
 995                 go->hpi_ops = &go7007_usb_ezusb_hpi_ops;
 996         else
 997                 go->hpi_ops = &go7007_usb_onboard_hpi_ops;
 998         go->hpi_context = usb;
 999         usb_fill_int_urb(usb->intr_urb, usb->usbdev,
1000                         usb_rcvintpipe(usb->usbdev, 4),
1001                         usb->intr_urb->transfer_buffer, 2*sizeof(u16),
1002                         go7007_usb_readinterrupt_complete, go, 8);
1003         usb_set_intfdata(intf, go);
1004
1005         /* Boot the GO7007 */
1006         if (go7007_boot_encoder(go, go->board_info->flags &
1007                                         GO7007_BOARD_USE_ONBOARD_I2C) < 0)
1008                 goto initfail;
1009
1010         /* Register the EZ-USB I2C adapter, if we're using it */
1011         if (board->flags & GO7007_USB_EZUSB_I2C) {
1012                 memcpy(&go->i2c_adapter, &go7007_usb_adap_templ,
1013                                 sizeof(go7007_usb_adap_templ));
1014                 init_MUTEX(&usb->i2c_lock);
1015                 go->i2c_adapter.dev.parent = go->dev;
1016                 i2c_set_adapdata(&go->i2c_adapter, go);
1017                 if (i2c_add_adapter(&go->i2c_adapter) < 0) {
1018                         printk(KERN_ERR
1019                                 "go7007-usb: error: i2c_add_adapter failed\n");
1020                         goto initfail;
1021                 }
1022                 go->i2c_adapter_online = 1;
1023         }
1024
1025         /* Pelco and Adlink reused the XMen and XMen-III vendor and product
1026          * IDs for their own incompatible designs.  We can detect XMen boards
1027          * by probing the sensor, but there is no way to probe the sensors on
1028          * the Pelco and Adlink designs so we default to the Adlink.  If it
1029          * is actually a Pelco, the user must set the assume_endura module
1030          * parameter. */
1031         if ((go->board_id == GO7007_BOARDID_XMEN ||
1032                                 go->board_id == GO7007_BOARDID_XMEN_III) &&
1033                         go->i2c_adapter_online) {
1034                 union i2c_smbus_data data;
1035
1036                 /* Check to see if register 0x0A is 0x76 */
1037                 i2c_smbus_xfer(&go->i2c_adapter, 0x21, I2C_CLIENT_SCCB,
1038                         I2C_SMBUS_READ, 0x0A, I2C_SMBUS_BYTE_DATA, &data);
1039                 if (data.byte != 0x76) {
1040                         if (assume_endura) {
1041                                 go->board_id = GO7007_BOARDID_ENDURA;
1042                                 usb->board = board = &board_endura;
1043                                 go->board_info = &board->main_info;
1044                                 strncpy(go->name, "Pelco Endura",
1045                                                 sizeof(go->name));
1046                         } else {
1047                                 u16 channel;
1048
1049                                 /* set GPIO5 to be an output, currently low */
1050                                 go7007_write_addr(go, 0x3c82, 0x0000);
1051                                 go7007_write_addr(go, 0x3c80, 0x00df);
1052                                 /* read channel number from GPIO[1:0] */
1053                                 go7007_read_addr(go, 0x3c81, &channel);
1054                                 channel &= 0x3;
1055                                 go->board_id = GO7007_BOARDID_ADLINK_MPG24;
1056                                 usb->board = board = &board_adlink_mpg24;
1057                                 go->board_info = &board->main_info;
1058                                 go->channel_number = channel;
1059                                 snprintf(go->name, sizeof(go->name),
1060                                         "Adlink PCI-MPG24, channel #%d",
1061                                         channel);
1062                         }
1063                 }
1064         }
1065
1066         /* Probe the tuner model on the TV402U */
1067         if (go->board_id == GO7007_BOARDID_PX_TV402U_ANY) {
1068                 u8 data[3];
1069
1070                 /* Board strapping indicates tuner model */
1071                 if (go7007_usb_vendor_request(go, 0x41, 0, 0, data, 3, 1) < 0) {
1072                         printk(KERN_ERR "go7007-usb: GPIO read failed!\n");
1073                         goto initfail;
1074                 }
1075                 switch (data[0] >> 6) {
1076                 case 1:
1077                         go->board_id = GO7007_BOARDID_PX_TV402U_EU;
1078                         go->tuner_type = TUNER_SONY_BTF_PG472Z;
1079                         strncpy(go->name, "Plextor PX-TV402U-EU",
1080                                         sizeof(go->name));
1081                         break;
1082                 case 2:
1083                         go->board_id = GO7007_BOARDID_PX_TV402U_JP;
1084                         go->tuner_type = TUNER_SONY_BTF_PK467Z;
1085                         strncpy(go->name, "Plextor PX-TV402U-JP",
1086                                         sizeof(go->name));
1087                         break;
1088                 case 3:
1089                         go->board_id = GO7007_BOARDID_PX_TV402U_NA;
1090                         go->tuner_type = TUNER_SONY_BTF_PB463Z;
1091                         strncpy(go->name, "Plextor PX-TV402U-NA",
1092                                         sizeof(go->name));
1093                         break;
1094                 default:
1095                         printk(KERN_DEBUG "go7007-usb: unable to detect "
1096                                                 "tuner type!\n");
1097                         break;
1098                 }
1099                 /* Configure tuner mode selection inputs connected
1100                  * to the EZ-USB GPIO output pins */
1101                 if (go7007_usb_vendor_request(go, 0x40, 0x7f02, 0,
1102                                         NULL, 0, 0) < 0) {
1103                         printk(KERN_ERR
1104                                 "go7007-usb: GPIO write failed!\n");
1105                         goto initfail;
1106                 }
1107         }
1108
1109         /* Print a nasty message if the user attempts to use a USB2.0 device in
1110          * a USB1.1 port.  There will be silent corruption of the stream. */
1111         if ((board->flags & GO7007_USB_EZUSB) &&
1112                         usbdev->speed != USB_SPEED_HIGH)
1113                 printk(KERN_ERR "go7007-usb: *** WARNING ***  This device "
1114                                 "must be connected to a USB 2.0 port!  "
1115                                 "Attempting to capture video through a USB 1.1 "
1116                                 "port will result in stream corruption, even "
1117                                 "at low bitrates!\n");
1118
1119         /* Do any final GO7007 initialization, then register the
1120          * V4L2 and ALSA interfaces */
1121         if (go7007_register_encoder(go) < 0)
1122                 goto initfail;
1123
1124         /* Allocate the URBs and buffers for receiving the video stream */
1125         if (board->flags & GO7007_USB_EZUSB) {
1126                 v_urb_len = 1024;
1127                 video_pipe = usb_rcvbulkpipe(usb->usbdev, 6);
1128         } else {
1129                 v_urb_len = 512;
1130                 video_pipe = usb_rcvbulkpipe(usb->usbdev, 1);
1131         }
1132         for (i = 0; i < 8; ++i) {
1133                 usb->video_urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
1134                 if (usb->video_urbs[i] == NULL)
1135                         goto initfail;
1136                 usb->video_urbs[i]->transfer_buffer =
1137                                                 kmalloc(v_urb_len, GFP_KERNEL);
1138                 if (usb->video_urbs[i]->transfer_buffer == NULL)
1139                         goto initfail;
1140                 usb_fill_bulk_urb(usb->video_urbs[i], usb->usbdev, video_pipe,
1141                                 usb->video_urbs[i]->transfer_buffer, v_urb_len,
1142                                 go7007_usb_read_video_pipe_complete, go);
1143         }
1144
1145         /* Allocate the URBs and buffers for receiving the audio stream */
1146         if ((board->flags & GO7007_USB_EZUSB) && go->audio_enabled)
1147                 for (i = 0; i < 8; ++i) {
1148                         usb->audio_urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
1149                         if (usb->audio_urbs[i] == NULL)
1150                                 goto initfail;
1151                         usb->audio_urbs[i]->transfer_buffer = kmalloc(4096,
1152                                                                 GFP_KERNEL);
1153                         if (usb->audio_urbs[i]->transfer_buffer == NULL)
1154                                 goto initfail;
1155                         usb_fill_bulk_urb(usb->audio_urbs[i], usb->usbdev,
1156                                 usb_rcvbulkpipe(usb->usbdev, 8),
1157                                 usb->audio_urbs[i]->transfer_buffer, 4096,
1158                                 go7007_usb_read_audio_pipe_complete, go);
1159                 }
1160
1161
1162         go->status = STATUS_ONLINE;
1163         return 0;
1164
1165 initfail:
1166         go->status = STATUS_SHUTDOWN;
1167         return 0;
1168
1169 allocfail:
1170         if (usb->intr_urb) {
1171                 kfree(usb->intr_urb->transfer_buffer);
1172                 usb_free_urb(usb->intr_urb);
1173         }
1174         kfree(usb);
1175         return -ENOMEM;
1176 }
1177
1178 static void go7007_usb_disconnect(struct usb_interface *intf)
1179 {
1180         struct go7007 *go = usb_get_intfdata(intf);
1181         struct go7007_usb *usb = go->hpi_context;
1182         int i;
1183
1184         go->status = STATUS_SHUTDOWN;
1185         usb_kill_urb(usb->intr_urb);
1186
1187         /* Free USB-related structs */
1188         for (i = 0; i < 8; ++i) {
1189                 if (usb->video_urbs[i] != NULL) {
1190                         if (usb->video_urbs[i]->transfer_buffer != NULL)
1191                                 kfree(usb->video_urbs[i]->transfer_buffer);
1192                         usb_free_urb(usb->video_urbs[i]);
1193                 }
1194                 if (usb->audio_urbs[i] != NULL) {
1195                         if (usb->audio_urbs[i]->transfer_buffer != NULL)
1196                                 kfree(usb->audio_urbs[i]->transfer_buffer);
1197                         usb_free_urb(usb->audio_urbs[i]);
1198                 }
1199         }
1200         kfree(usb->intr_urb->transfer_buffer);
1201         usb_free_urb(usb->intr_urb);
1202
1203         kfree(go->hpi_context);
1204
1205         go7007_remove(go);
1206 }
1207
1208 static struct usb_driver go7007_usb_driver = {
1209         .name           = "go7007",
1210         .probe          = go7007_usb_probe,
1211         .disconnect     = go7007_usb_disconnect,
1212         .id_table       = go7007_usb_id_table,
1213 };
1214
1215 static int __init go7007_usb_init(void)
1216 {
1217         return usb_register(&go7007_usb_driver);
1218 }
1219
1220 static void __exit go7007_usb_cleanup(void)
1221 {
1222         usb_deregister(&go7007_usb_driver);
1223 }
1224
1225 module_init(go7007_usb_init);
1226 module_exit(go7007_usb_cleanup);
1227
1228 MODULE_LICENSE("GPL v2");