drivers/media/dvb/b2c2/flexcop-usb.c

   1 /*
   2  * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
   3  * flexcop-usb.c - covers the USB part
   4  * see flexcop.c for copyright information
   5  */
   6 #define FC_LOG_PREFIX "flexcop_usb"
   7 #include "flexcop-usb.h"
   8 #include "flexcop-common.h"
   9
  10 /* Version information */
  11 #define DRIVER_VERSION "0.1"
  12 #define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV USB Driver"
  13 #define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de>"
  14
  15 /* debug */
  16 #ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
  17 #define dprintk(level,args...) \
  18         do { if ((debug & level)) printk(args); } while (0)
  19
  20 #define debug_dump(b, l, method) do {\
  21         int i; \
  22         for (i = 0; i < l; i++) \
  23                 method("%02x ", b[i]); \
  24         method("\n"); \
  25 } while (0)
  26
  27 #define DEBSTATUS ""
  28 #else
  29 #define dprintk(level, args...)
  30 #define debug_dump(b, l, method)
  31 #define DEBSTATUS " (debugging is not enabled)"
  32 #endif
  33
  34 static int debug;
  35 module_param(debug, int, 0644);
  36 MODULE_PARM_DESC(debug, "set debugging level (1=info,ts=2,"
  37                 "ctrl=4,i2c=8,v8mem=16 (or-able))." DEBSTATUS);
  38 #undef DEBSTATUS
  39
  40 #define deb_info(args...) dprintk(0x01, args)
  41 #define deb_ts(args...) dprintk(0x02, args)
  42 #define deb_ctrl(args...) dprintk(0x04, args)
  43 #define deb_i2c(args...) dprintk(0x08, args)
  44 #define deb_v8(args...) dprintk(0x10, args)
  45
  46 /* JLP 111700: we will include the 1 bit gap between the upper and lower 3 bits
  47  * in the IBI address, to make the V8 code simpler.
  48  * PCI ADDRESS FORMAT: 0x71C -> 0000 0111 0001 1100 (the six bits used)
  49  *                  in general: 0000 0HHH 000L LL00
  50  * IBI ADDRESS FORMAT:                    RHHH BLLL
  51  *
  52  * where R is the read(1)/write(0) bit, B is the busy bit
  53  * and HHH and LLL are the two sets of three bits from the PCI address.
  54  */
  55 #define B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(usPCI) (u8) \
  56         (((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
  57 #define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) \
  58         (((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
  59
  60 /*
  61  * DKT 020228
  62  * - forget about this VENDOR_BUFFER_SIZE, read and write register
  63  *   deal with DWORD or 4 bytes, that should be should from now on
  64  * - from now on, we don't support anything older than firm 1.00
  65  *   I eliminated the write register as a 2 trip of writing hi word and lo word
  66  *   and force this to write only 4 bytes at a time.
  67  *   NOTE: this should work with all the firmware from 1.00 and newer
  68  */
  69 static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI, u32 *val, u8 read)
  70 {
  71         struct flexcop_usb *fc_usb = fc->bus_specific;
  72         u8 request = read ? B2C2_USB_READ_REG : B2C2_USB_WRITE_REG;
  73         u8 request_type = (read ? USB_DIR_IN : USB_DIR_OUT) | USB_TYPE_VENDOR;
  74         u8 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) |
  75                 (read ? 0x80 : 0);
  76
  77         int len = usb_control_msg(fc_usb->udev,
  78                         read ? B2C2_USB_CTRL_PIPE_IN : B2C2_USB_CTRL_PIPE_OUT,
  79                         request,
  80                         request_type, /* 0xc0 read or 0x40 write */
  81                         wAddress,
  82                         0,
  83                         val,
  84                         sizeof(u32),
  85                         B2C2_WAIT_FOR_OPERATION_RDW * HZ);
  86
  87         if (len != sizeof(u32)) {
  88                 err("error while %s dword from %d (%d).", read ? "reading" :
  89                                 "writing", wAddress, wRegOffsPCI);
  90                 return -EIO;
  91         }
  92         return 0;
  93 }
  94 /*
  95  * DKT 010817 - add support for V8 memory read/write and flash update
  96  */
  97 static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb,
  98                 flexcop_usb_request_t req, u8 page, u16 wAddress,
  99                 u8 *pbBuffer, u32 buflen)
 100 {
 101         u8 request_type = USB_TYPE_VENDOR;
 102         u16 wIndex;
 103         int nWaitTime, pipe, len;
 104         wIndex = page << 8;
 105
 106         switch (req) {
 107         case B2C2_USB_READ_V8_MEM:
 108                 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ;
 109                 request_type |= USB_DIR_IN;
 110                 pipe = B2C2_USB_CTRL_PIPE_IN;
 111                 break;
 112         case B2C2_USB_WRITE_V8_MEM:
 113                 wIndex |= pbBuffer[0];
 114                 request_type |= USB_DIR_OUT;
 115                 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
 116                 pipe = B2C2_USB_CTRL_PIPE_OUT;
 117                 break;
 118         case B2C2_USB_FLASH_BLOCK:
 119                 request_type |= USB_DIR_OUT;
 120                 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
 121                 pipe = B2C2_USB_CTRL_PIPE_OUT;
 122                 break;
 123         default:
 124                 deb_info("unsupported request for v8_mem_req %x.\n", req);
 125                 return -EINVAL;
 126         }
 127         deb_v8("v8mem: %02x %02x %04x %04x, len: %d\n", request_type, req,
 128                         wAddress, wIndex, buflen);
 129
 130         len = usb_control_msg(fc_usb->udev, pipe,
 131                         req,
 132                         request_type,
 133                         wAddress,
 134                         wIndex,
 135                         pbBuffer,
 136                         buflen,
 137                         nWaitTime * HZ);
 138
 139         debug_dump(pbBuffer, len, deb_v8);
 140         return len == buflen ? 0 : -EIO;
 141 }
 142
 143 #define bytes_left_to_read_on_page(paddr,buflen) \
 144         ((V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)) > buflen \
 145          ? buflen : (V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)))
 146
 147 static int flexcop_usb_memory_req(struct flexcop_usb *fc_usb,
 148                 flexcop_usb_request_t req, flexcop_usb_mem_page_t page_start,
 149                 u32 addr, int extended, u8 *buf, u32 len)
 150 {
 151         int i,ret = 0;
 152         u16 wMax;
 153         u32 pagechunk = 0;
 154
 155         switch(req) {
 156         case B2C2_USB_READ_V8_MEM:
 157                 wMax = USB_MEM_READ_MAX;
 158                 break;
 159         case B2C2_USB_WRITE_V8_MEM:
 160                 wMax = USB_MEM_WRITE_MAX;
 161                 break;
 162         case B2C2_USB_FLASH_BLOCK:
 163                 wMax = USB_FLASH_MAX;
 164                 break;
 165         default:
 166                 return -EINVAL;
 167                 break;
 168         }
 169         for (i = 0; i < len;) {
 170                 pagechunk =
 171                         wMax < bytes_left_to_read_on_page(addr, len) ?
 172                                 wMax :
 173                                 bytes_left_to_read_on_page(addr, len);
 174                 deb_info("%x\n",
 175                         (addr & V8_MEMORY_PAGE_MASK) |
 176                                 (V8_MEMORY_EXTENDED*extended));
 177
 178                 ret = flexcop_usb_v8_memory_req(fc_usb, req,
 179                         page_start + (addr / V8_MEMORY_PAGE_SIZE),
 180                         (addr & V8_MEMORY_PAGE_MASK) |
 181                                 (V8_MEMORY_EXTENDED*extended),
 182                         &buf[i], pagechunk);
 183
 184                 if (ret < 0)
 185                         return ret;
 186                 addr += pagechunk;
 187                 len -= pagechunk;
 188         }
 189         return 0;
 190 }
 191
 192 static int flexcop_usb_get_mac_addr(struct flexcop_device *fc, int extended)
 193 {
 194         return flexcop_usb_memory_req(fc->bus_specific, B2C2_USB_READ_V8_MEM,
 195                 V8_MEMORY_PAGE_FLASH, 0x1f010, 1,
 196                 fc->dvb_adapter.proposed_mac, 6);
 197 }
 198
 199 #if 0
 200 static int flexcop_usb_utility_req(struct flexcop_usb *fc_usb, int set,
 201                 flexcop_usb_utility_function_t func, u8 extra, u16 wIndex,
 202                 u16 buflen, u8 *pvBuffer)
 203 {
 204         u16 wValue;
 205         u8 request_type = (set ? USB_DIR_OUT : USB_DIR_IN) | USB_TYPE_VENDOR;
 206         int nWaitTime = 2,
 207             pipe = set ? B2C2_USB_CTRL_PIPE_OUT : B2C2_USB_CTRL_PIPE_IN, len;
 208         wValue = (func << 8) | extra;
 209
 210         len = usb_control_msg(fc_usb->udev,pipe,
 211                         B2C2_USB_UTILITY,
 212                         request_type,
 213                         wValue,
 214                         wIndex,
 215                         pvBuffer,
 216                         buflen,
 217                         nWaitTime * HZ);
 218         return len == buflen ? 0 : -EIO;
 219 }
 220 #endif
 221
 222 /* usb i2c stuff */
 223 static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
 224                 flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
 225                 u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
 226 {
 227         struct flexcop_usb *fc_usb = i2c->fc->bus_specific;
 228         u16 wValue, wIndex;
 229         int nWaitTime,pipe,len;
 230         u8 request_type = USB_TYPE_VENDOR;
 231
 232         switch (func) {
 233         case USB_FUNC_I2C_WRITE:
 234         case USB_FUNC_I2C_MULTIWRITE:
 235         case USB_FUNC_I2C_REPEATWRITE:
 236                 /* DKT 020208 - add this to support special case of DiSEqC */
 237         case USB_FUNC_I2C_CHECKWRITE:
 238                 pipe = B2C2_USB_CTRL_PIPE_OUT;
 239                 nWaitTime = 2;
 240                 request_type |= USB_DIR_OUT;
 241                 break;
 242         case USB_FUNC_I2C_READ:
 243         case USB_FUNC_I2C_REPEATREAD:
 244                 pipe = B2C2_USB_CTRL_PIPE_IN;
 245                 nWaitTime = 2;
 246                 request_type |= USB_DIR_IN;
 247                 break;
 248         default:
 249                 deb_info("unsupported function for i2c_req %x\n", func);
 250                 return -EINVAL;
 251         }
 252         wValue = (func << 8) | (i2c->port << 4);
 253         wIndex = (chipaddr << 8 ) | addr;
 254
 255         deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",
 256                         func, request_type, req,
 257                         wValue & 0xff, wValue >> 8,
 258                         wIndex & 0xff, wIndex >> 8);
 259
 260         len = usb_control_msg(fc_usb->udev,pipe,
 261                         req,
 262                         request_type,
 263                         wValue,
 264                         wIndex,
 265                         buf,
 266                         buflen,
 267                         nWaitTime * HZ);
 268         return len == buflen ? 0 : -EREMOTEIO;
 269 }
 270
 271 /* actual bus specific access functions,
 272    make sure prototype are/will be equal to pci */
 273 static flexcop_ibi_value flexcop_usb_read_ibi_reg(struct flexcop_device *fc,
 274         flexcop_ibi_register reg)
 275 {
 276         flexcop_ibi_value val;
 277         val.raw = 0;
 278         flexcop_usb_readwrite_dw(fc, reg, &val.raw, 1);
 279         return val;
 280 }
 281
 282 static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc,
 283                 flexcop_ibi_register reg, flexcop_ibi_value val)
 284 {
 285         return flexcop_usb_readwrite_dw(fc, reg, &val.raw, 0);
 286 }
 287
 288 static int flexcop_usb_i2c_request(struct flexcop_i2c_adapter *i2c,
 289                 flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
 290 {
 291         if (op == FC_READ)
 292                 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
 293                                 USB_FUNC_I2C_READ, chipaddr, addr, buf, len);
 294         else
 295                 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
 296                                 USB_FUNC_I2C_WRITE, chipaddr, addr, buf, len);
 297 }
 298
 299 static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb,
 300         u8 *buffer, int buffer_length)
 301 {
 302         u8 *b;
 303         int l;
 304
 305         deb_ts("tmp_buffer_length=%d, buffer_length=%d\n",
 306                 fc_usb->tmp_buffer_length, buffer_length);
 307
 308         if (fc_usb->tmp_buffer_length > 0) {
 309                 memcpy(fc_usb->tmp_buffer+fc_usb->tmp_buffer_length, buffer,
 310                                 buffer_length);
 311                 fc_usb->tmp_buffer_length += buffer_length;
 312                 b = fc_usb->tmp_buffer;
 313                 l = fc_usb->tmp_buffer_length;
 314         } else {
 315                 b=buffer;
 316                 l=buffer_length;
 317         }
 318
 319         while (l >= 190) {
 320                 if (*b == 0xff) {
 321                         switch (*(b+1) & 0x03) {
 322                         case 0x01: /* media packet */
 323                                 if (*(b+2) == 0x47)
 324                                         flexcop_pass_dmx_packets(
 325                                                         fc_usb->fc_dev, b+2, 1);
 326                                 else
 327                                         deb_ts(
 328                                         "not ts packet %02x %02x %02x %02x \n",
 329                                                 *(b+2), *(b+3),
 330                                                 *(b+4), *(b+5));
 331                                 b += 190;
 332                                 l -= 190;
 333                                 break;
 334                         default:
 335                                 deb_ts("wrong packet type\n");
 336                                 l = 0;
 337                                 break;
 338                         }
 339                 } else {
 340                         deb_ts("wrong header\n");
 341                         l = 0;
 342                 }
 343         }
 344
 345         if (l>0)
 346                 memcpy(fc_usb->tmp_buffer, b, l);
 347         fc_usb->tmp_buffer_length = l;
 348 }
 349
 350 static void flexcop_usb_urb_complete(struct urb *urb)
 351 {
 352         struct flexcop_usb *fc_usb = urb->context;
 353         int i;
 354
 355         if (urb->actual_length > 0)
 356                 deb_ts("urb completed, bufsize: %d actlen; %d\n",
 357                         urb->transfer_buffer_length, urb->actual_length);
 358
 359         for (i = 0; i < urb->number_of_packets; i++) {
 360                 if (urb->iso_frame_desc[i].status < 0) {
 361                         err("iso frame descriptor %d has an error: %d\n", i,
 362                                 urb->iso_frame_desc[i].status);
 363                 } else
 364                         if (urb->iso_frame_desc[i].actual_length > 0) {
 365                                 deb_ts("passed %d bytes to the demux\n",
 366                                         urb->iso_frame_desc[i].actual_length);
 367
 368                                 flexcop_usb_process_frame(fc_usb,
 369                                         urb->transfer_buffer +
 370                                                 urb->iso_frame_desc[i].offset,
 371                                         urb->iso_frame_desc[i].actual_length);
 372                         }
 373                 urb->iso_frame_desc[i].status = 0;
 374                 urb->iso_frame_desc[i].actual_length = 0;
 375         }
 376         usb_submit_urb(urb,GFP_ATOMIC);
 377 }
 378
 379 static int flexcop_usb_stream_control(struct flexcop_device *fc, int onoff)
 380 {
 381         /* submit/kill iso packets */
 382         return 0;
 383 }
 384
 385 static void flexcop_usb_transfer_exit(struct flexcop_usb *fc_usb)
 386 {
 387         int i;
 388         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
 389                 if (fc_usb->iso_urb[i] != NULL) {
 390                         deb_ts("unlinking/killing urb no. %d\n",i);
 391                         usb_kill_urb(fc_usb->iso_urb[i]);
 392                         usb_free_urb(fc_usb->iso_urb[i]);
 393                 }
 394
 395         if (fc_usb->iso_buffer != NULL)
 396                 pci_free_consistent(NULL,
 397                         fc_usb->buffer_size, fc_usb->iso_buffer,
 398                         fc_usb->dma_addr);
 399 }
 400
 401 static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb)
 402 {
 403         u16 frame_size = le16_to_cpu(
 404                 fc_usb->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
 405         int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO *
 406                 frame_size, i, j, ret;
 407         int buffer_offset = 0;
 408
 409         deb_ts("creating %d iso-urbs with %d frames "
 410                         "each of %d bytes size = %d.\n", B2C2_USB_NUM_ISO_URB,
 411                         B2C2_USB_FRAMES_PER_ISO, frame_size, bufsize);
 412
 413         fc_usb->iso_buffer = pci_alloc_consistent(NULL,
 414                         bufsize, &fc_usb->dma_addr);
 415         if (fc_usb->iso_buffer == NULL)
 416                 return -ENOMEM;
 417
 418         memset(fc_usb->iso_buffer, 0, bufsize);
 419         fc_usb->buffer_size = bufsize;
 420
 421         /* creating iso urbs */
 422         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
 423                 fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,
 424                         GFP_ATOMIC);
 425                 if (fc_usb->iso_urb[i] == NULL) {
 426                         ret = -ENOMEM;
 427                         goto urb_error;
 428                 }
 429         }
 430
 431         /* initialising and submitting iso urbs */
 432         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
 433                 int frame_offset = 0;
 434                 struct urb *urb = fc_usb->iso_urb[i];
 435                 deb_ts("initializing and submitting urb no. %d "
 436                         "(buf_offset: %d).\n", i, buffer_offset);
 437
 438                 urb->dev = fc_usb->udev;
 439                 urb->context = fc_usb;
 440                 urb->complete = flexcop_usb_urb_complete;
 441                 urb->pipe = B2C2_USB_DATA_PIPE;
 442                 urb->transfer_flags = URB_ISO_ASAP;
 443                 urb->interval = 1;
 444                 urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
 445                 urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
 446                 urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset;
 447
 448                 buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
 449                 for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
 450                         deb_ts("urb no: %d, frame: %d, frame_offset: %d\n",
 451                                         i, j, frame_offset);
 452                         urb->iso_frame_desc[j].offset = frame_offset;
 453                         urb->iso_frame_desc[j].length = frame_size;
 454                         frame_offset += frame_size;
 455                 }
 456
 457                 if ((ret = usb_submit_urb(fc_usb->iso_urb[i],GFP_ATOMIC))) {
 458                         err("submitting urb %d failed with %d.", i, ret);
 459                         goto urb_error;
 460                 }
 461                 deb_ts("submitted urb no. %d.\n",i);
 462         }
 463
 464         /* SRAM */
 465         flexcop_sram_set_dest(fc_usb->fc_dev, FC_SRAM_DEST_MEDIA |
 466                         FC_SRAM_DEST_NET | FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI,
 467                         FC_SRAM_DEST_TARGET_WAN_USB);
 468         flexcop_wan_set_speed(fc_usb->fc_dev, FC_WAN_SPEED_8MBITS);
 469         flexcop_sram_ctrl(fc_usb->fc_dev, 1, 1, 1);
 470         return 0;
 471
 472 urb_error:
 473         flexcop_usb_transfer_exit(fc_usb);
 474         return ret;
 475 }
 476
 477 static int flexcop_usb_init(struct flexcop_usb *fc_usb)
 478 {
 479         /* use the alternate setting with the larges buffer */
 480         usb_set_interface(fc_usb->udev,0,1);
 481         switch (fc_usb->udev->speed) {
 482         case USB_SPEED_LOW:
 483                 err("cannot handle USB speed because it is too slow.");
 484                 return -ENODEV;
 485                 break;
 486         case USB_SPEED_FULL:
 487                 info("running at FULL speed.");
 488                 break;
 489         case USB_SPEED_HIGH:
 490                 info("running at HIGH speed.");
 491                 break;
 492         case USB_SPEED_UNKNOWN: /* fall through */
 493         default:
 494                 err("cannot handle USB speed because it is unknown.");
 495                 return -ENODEV;
 496         }
 497         usb_set_intfdata(fc_usb->uintf, fc_usb);
 498         return 0;
 499 }
 500
 501 static void flexcop_usb_exit(struct flexcop_usb *fc_usb)
 502 {
 503         usb_set_intfdata(fc_usb->uintf, NULL);
 504 }
 505
 506 static int flexcop_usb_probe(struct usb_interface *intf,
 507                 const struct usb_device_id *id)
 508 {
 509         struct usb_device *udev = interface_to_usbdev(intf);
 510         struct flexcop_usb *fc_usb = NULL;
 511         struct flexcop_device *fc = NULL;
 512         int ret;
 513
 514         if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) {
 515                 err("out of memory\n");
 516                 return -ENOMEM;
 517         }
 518
 519         /* general flexcop init */
 520         fc_usb = fc->bus_specific;
 521         fc_usb->fc_dev = fc;
 522
 523         fc->read_ibi_reg  = flexcop_usb_read_ibi_reg;
 524         fc->write_ibi_reg = flexcop_usb_write_ibi_reg;
 525         fc->i2c_request = flexcop_usb_i2c_request;
 526         fc->get_mac_addr = flexcop_usb_get_mac_addr;
 527
 528         fc->stream_control = flexcop_usb_stream_control;
 529
 530         fc->pid_filtering = 1;
 531         fc->bus_type = FC_USB;
 532
 533         fc->dev = &udev->dev;
 534         fc->owner = THIS_MODULE;
 535
 536         /* bus specific part */
 537         fc_usb->udev = udev;
 538         fc_usb->uintf = intf;
 539         if ((ret = flexcop_usb_init(fc_usb)) != 0)
 540                 goto err_kfree;
 541
 542         /* init flexcop */
 543         if ((ret = flexcop_device_initialize(fc)) != 0)
 544                 goto err_usb_exit;
 545
 546         /* xfer init */
 547         if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0)
 548                 goto err_fc_exit;
 549
 550         info("%s successfully initialized and connected.", DRIVER_NAME);
 551         return 0;
 552
 553 err_fc_exit:
 554         flexcop_device_exit(fc);
 555 err_usb_exit:
 556         flexcop_usb_exit(fc_usb);
 557 err_kfree:
 558         flexcop_device_kfree(fc);
 559         return ret;
 560 }
 561
 562 static void flexcop_usb_disconnect(struct usb_interface *intf)
 563 {
 564         struct flexcop_usb *fc_usb = usb_get_intfdata(intf);
 565         flexcop_usb_transfer_exit(fc_usb);
 566         flexcop_device_exit(fc_usb->fc_dev);
 567         flexcop_usb_exit(fc_usb);
 568         flexcop_device_kfree(fc_usb->fc_dev);
 569         info("%s successfully deinitialized and disconnected.", DRIVER_NAME);
 570 }
 571
 572 static struct usb_device_id flexcop_usb_table [] = {
 573         { USB_DEVICE(0x0af7, 0x0101) },
 574         { }
 575 };
 576 MODULE_DEVICE_TABLE (usb, flexcop_usb_table);
 577
 578 /* usb specific object needed to register this driver with the usb subsystem */
 579 static struct usb_driver flexcop_usb_driver = {
 580         .name           = "b2c2_flexcop_usb",
 581         .probe          = flexcop_usb_probe,
 582         .disconnect = flexcop_usb_disconnect,
 583         .id_table       = flexcop_usb_table,
 584 };
 585
 586 /* module stuff */
 587 static int __init flexcop_usb_module_init(void)
 588 {
 589         int result;
 590         if ((result = usb_register(&flexcop_usb_driver))) {
 591                 err("usb_register failed. (%d)", result);
 592                 return result;
 593         }
 594         return 0;
 595 }
 596
 597 static void __exit flexcop_usb_module_exit(void)
 598 {
 599         /* deregister this driver from the USB subsystem */
 600         usb_deregister(&flexcop_usb_driver);
 601 }
 602
 603 module_init(flexcop_usb_module_init);
 604 module_exit(flexcop_usb_module_exit);
 605
 606 MODULE_AUTHOR(DRIVER_AUTHOR);
 607 MODULE_DESCRIPTION(DRIVER_NAME);
 608 MODULE_LICENSE("GPL");