drivers/media/usb/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@posteo.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,ctrl=4,i2c=8,v8mem=16 (or-able))." DEBSTATUS);
  37 #undef DEBSTATUS
  38
  39 #define deb_info(args...) dprintk(0x01, args)
  40 #define deb_ts(args...) dprintk(0x02, args)
  41 #define deb_ctrl(args...) dprintk(0x04, args)
  42 #define deb_i2c(args...) dprintk(0x08, args)
  43 #define deb_v8(args...) dprintk(0x10, args)
  44
  45 /* JLP 111700: we will include the 1 bit gap between the upper and lower 3 bits
  46  * in the IBI address, to make the V8 code simpler.
  47  * PCI ADDRESS FORMAT: 0x71C -> 0000 0111 0001 1100 (the six bits used)
  48  *                  in general: 0000 0HHH 000L LL00
  49  * IBI ADDRESS FORMAT:                    RHHH BLLL
  50  *
  51  * where R is the read(1)/write(0) bit, B is the busy bit
  52  * and HHH and LLL are the two sets of three bits from the PCI address.
  53  */
  54 #define B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(usPCI) (u8) \
  55         (((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
  56 #define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) \
  57         (((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
  58
  59 /*
  60  * DKT 020228
  61  * - forget about this VENDOR_BUFFER_SIZE, read and write register
  62  *   deal with DWORD or 4 bytes, that should be should from now on
  63  * - from now on, we don't support anything older than firm 1.00
  64  *   I eliminated the write register as a 2 trip of writing hi word and lo word
  65  *   and force this to write only 4 bytes at a time.
  66  *   NOTE: this should work with all the firmware from 1.00 and newer
  67  */
  68 static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI, u32 *val, u8 read)
  69 {
  70         struct flexcop_usb *fc_usb = fc->bus_specific;
  71         u8 request = read ? B2C2_USB_READ_REG : B2C2_USB_WRITE_REG;
  72         u8 request_type = (read ? USB_DIR_IN : USB_DIR_OUT) | USB_TYPE_VENDOR;
  73         u8 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) |
  74                 (read ? 0x80 : 0);
  75         int ret;
  76
  77         mutex_lock(&fc_usb->data_mutex);
  78         if (!read)
  79                 memcpy(fc_usb->data, val, sizeof(*val));
  80
  81         ret = usb_control_msg(fc_usb->udev,
  82                         read ? B2C2_USB_CTRL_PIPE_IN : B2C2_USB_CTRL_PIPE_OUT,
  83                         request,
  84                         request_type, /* 0xc0 read or 0x40 write */
  85                         wAddress,
  86                         0,
  87                         fc_usb->data,
  88                         sizeof(u32),
  89                         B2C2_WAIT_FOR_OPERATION_RDW);
  90
  91         if (ret != sizeof(u32)) {
  92                 err("error while %s dword from %d (%d).", read ? "reading" :
  93                                 "writing", wAddress, wRegOffsPCI);
  94                 if (ret >= 0)
  95                         ret = -EIO;
  96         }
  97
  98         if (read && ret >= 0)
  99                 memcpy(val, fc_usb->data, sizeof(*val));
 100         mutex_unlock(&fc_usb->data_mutex);
 101
 102         return ret;
 103 }
 104 /*
 105  * DKT 010817 - add support for V8 memory read/write and flash update
 106  */
 107 static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb,
 108                 flexcop_usb_request_t req, u8 page, u16 wAddress,
 109                 u8 *pbBuffer, u32 buflen)
 110 {
 111         u8 request_type = USB_TYPE_VENDOR;
 112         u16 wIndex;
 113         int nWaitTime, pipe, ret;
 114         wIndex = page << 8;
 115
 116         if (buflen > sizeof(fc_usb->data)) {
 117                 err("Buffer size bigger than max URB control message\n");
 118                 return -EIO;
 119         }
 120
 121         switch (req) {
 122         case B2C2_USB_READ_V8_MEM:
 123                 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ;
 124                 request_type |= USB_DIR_IN;
 125                 pipe = B2C2_USB_CTRL_PIPE_IN;
 126                 break;
 127         case B2C2_USB_WRITE_V8_MEM:
 128                 wIndex |= pbBuffer[0];
 129                 request_type |= USB_DIR_OUT;
 130                 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
 131                 pipe = B2C2_USB_CTRL_PIPE_OUT;
 132                 break;
 133         case B2C2_USB_FLASH_BLOCK:
 134                 request_type |= USB_DIR_OUT;
 135                 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
 136                 pipe = B2C2_USB_CTRL_PIPE_OUT;
 137                 break;
 138         default:
 139                 deb_info("unsupported request for v8_mem_req %x.\n", req);
 140                 return -EINVAL;
 141         }
 142         deb_v8("v8mem: %02x %02x %04x %04x, len: %d\n", request_type, req,
 143                         wAddress, wIndex, buflen);
 144
 145         mutex_lock(&fc_usb->data_mutex);
 146
 147         if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
 148                 memcpy(fc_usb->data, pbBuffer, buflen);
 149
 150         ret = usb_control_msg(fc_usb->udev, pipe,
 151                         req,
 152                         request_type,
 153                         wAddress,
 154                         wIndex,
 155                         fc_usb->data,
 156                         buflen,
 157                         nWaitTime);
 158         if (ret != buflen)
 159                 ret = -EIO;
 160
 161         if (ret >= 0) {
 162                 ret = 0;
 163                 if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
 164                         memcpy(pbBuffer, fc_usb->data, buflen);
 165         }
 166
 167         mutex_unlock(&fc_usb->data_mutex);
 168
 169         debug_dump(pbBuffer, ret, deb_v8);
 170         return ret;
 171 }
 172
 173 #define bytes_left_to_read_on_page(paddr,buflen) \
 174         ((V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)) > buflen \
 175          ? buflen : (V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)))
 176
 177 static int flexcop_usb_memory_req(struct flexcop_usb *fc_usb,
 178                 flexcop_usb_request_t req, flexcop_usb_mem_page_t page_start,
 179                 u32 addr, int extended, u8 *buf, u32 len)
 180 {
 181         int i,ret = 0;
 182         u16 wMax;
 183         u32 pagechunk = 0;
 184
 185         switch(req) {
 186         case B2C2_USB_READ_V8_MEM:
 187                 wMax = USB_MEM_READ_MAX;
 188                 break;
 189         case B2C2_USB_WRITE_V8_MEM:
 190                 wMax = USB_MEM_WRITE_MAX;
 191                 break;
 192         case B2C2_USB_FLASH_BLOCK:
 193                 wMax = USB_FLASH_MAX;
 194                 break;
 195         default:
 196                 return -EINVAL;
 197                 break;
 198         }
 199         for (i = 0; i < len;) {
 200                 pagechunk =
 201                         wMax < bytes_left_to_read_on_page(addr, len) ?
 202                                 wMax :
 203                                 bytes_left_to_read_on_page(addr, len);
 204                 deb_info("%x\n",
 205                         (addr & V8_MEMORY_PAGE_MASK) |
 206                                 (V8_MEMORY_EXTENDED*extended));
 207
 208                 ret = flexcop_usb_v8_memory_req(fc_usb, req,
 209                         page_start + (addr / V8_MEMORY_PAGE_SIZE),
 210                         (addr & V8_MEMORY_PAGE_MASK) |
 211                                 (V8_MEMORY_EXTENDED*extended),
 212                         &buf[i], pagechunk);
 213
 214                 if (ret < 0)
 215                         return ret;
 216                 addr += pagechunk;
 217                 len -= pagechunk;
 218         }
 219         return 0;
 220 }
 221
 222 static int flexcop_usb_get_mac_addr(struct flexcop_device *fc, int extended)
 223 {
 224         return flexcop_usb_memory_req(fc->bus_specific, B2C2_USB_READ_V8_MEM,
 225                 V8_MEMORY_PAGE_FLASH, 0x1f010, 1,
 226                 fc->dvb_adapter.proposed_mac, 6);
 227 }
 228
 229 /* usb i2c stuff */
 230 static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
 231                 flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
 232                 u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
 233 {
 234         struct flexcop_usb *fc_usb = i2c->fc->bus_specific;
 235         u16 wValue, wIndex;
 236         int nWaitTime, pipe, ret;
 237         u8 request_type = USB_TYPE_VENDOR;
 238
 239         if (buflen > sizeof(fc_usb->data)) {
 240                 err("Buffer size bigger than max URB control message\n");
 241                 return -EIO;
 242         }
 243
 244         switch (func) {
 245         case USB_FUNC_I2C_WRITE:
 246         case USB_FUNC_I2C_MULTIWRITE:
 247         case USB_FUNC_I2C_REPEATWRITE:
 248                 /* DKT 020208 - add this to support special case of DiSEqC */
 249         case USB_FUNC_I2C_CHECKWRITE:
 250                 pipe = B2C2_USB_CTRL_PIPE_OUT;
 251                 nWaitTime = 2000;
 252                 request_type |= USB_DIR_OUT;
 253                 break;
 254         case USB_FUNC_I2C_READ:
 255         case USB_FUNC_I2C_REPEATREAD:
 256                 pipe = B2C2_USB_CTRL_PIPE_IN;
 257                 nWaitTime = 2000;
 258                 request_type |= USB_DIR_IN;
 259                 break;
 260         default:
 261                 deb_info("unsupported function for i2c_req %x\n", func);
 262                 return -EINVAL;
 263         }
 264         wValue = (func << 8) | (i2c->port << 4);
 265         wIndex = (chipaddr << 8 ) | addr;
 266
 267         deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",
 268                         func, request_type, req,
 269                         wValue & 0xff, wValue >> 8,
 270                         wIndex & 0xff, wIndex >> 8);
 271
 272         mutex_lock(&fc_usb->data_mutex);
 273
 274         if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
 275                 memcpy(fc_usb->data, buf, buflen);
 276
 277         ret = usb_control_msg(fc_usb->udev, pipe,
 278                         req,
 279                         request_type,
 280                         wValue,
 281                         wIndex,
 282                         fc_usb->data,
 283                         buflen,
 284                         nWaitTime);
 285
 286         if (ret != buflen)
 287                 ret = -EIO;
 288
 289         if (ret >= 0) {
 290                 ret = 0;
 291                 if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
 292                         memcpy(buf, fc_usb->data, buflen);
 293         }
 294
 295         mutex_unlock(&fc_usb->data_mutex);
 296
 297         return ret;
 298 }
 299
 300 /* actual bus specific access functions,
 301    make sure prototype are/will be equal to pci */
 302 static flexcop_ibi_value flexcop_usb_read_ibi_reg(struct flexcop_device *fc,
 303         flexcop_ibi_register reg)
 304 {
 305         flexcop_ibi_value val;
 306         val.raw = 0;
 307         flexcop_usb_readwrite_dw(fc, reg, &val.raw, 1);
 308         return val;
 309 }
 310
 311 static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc,
 312                 flexcop_ibi_register reg, flexcop_ibi_value val)
 313 {
 314         return flexcop_usb_readwrite_dw(fc, reg, &val.raw, 0);
 315 }
 316
 317 static int flexcop_usb_i2c_request(struct flexcop_i2c_adapter *i2c,
 318                 flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
 319 {
 320         if (op == FC_READ)
 321                 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
 322                                 USB_FUNC_I2C_READ, chipaddr, addr, buf, len);
 323         else
 324                 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
 325                                 USB_FUNC_I2C_WRITE, chipaddr, addr, buf, len);
 326 }
 327
 328 static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb,
 329         u8 *buffer, int buffer_length)
 330 {
 331         u8 *b;
 332         int l;
 333
 334         deb_ts("tmp_buffer_length=%d, buffer_length=%d\n",
 335                 fc_usb->tmp_buffer_length, buffer_length);
 336
 337         if (fc_usb->tmp_buffer_length > 0) {
 338                 memcpy(fc_usb->tmp_buffer+fc_usb->tmp_buffer_length, buffer,
 339                                 buffer_length);
 340                 fc_usb->tmp_buffer_length += buffer_length;
 341                 b = fc_usb->tmp_buffer;
 342                 l = fc_usb->tmp_buffer_length;
 343         } else {
 344                 b=buffer;
 345                 l=buffer_length;
 346         }
 347
 348         while (l >= 190) {
 349                 if (*b == 0xff) {
 350                         switch (*(b+1) & 0x03) {
 351                         case 0x01: /* media packet */
 352                                 if (*(b+2) == 0x47)
 353                                         flexcop_pass_dmx_packets(
 354                                                         fc_usb->fc_dev, b+2, 1);
 355                                 else
 356                                         deb_ts("not ts packet %*ph\n", 4, b+2);
 357                                 b += 190;
 358                                 l -= 190;
 359                                 break;
 360                         default:
 361                                 deb_ts("wrong packet type\n");
 362                                 l = 0;
 363                                 break;
 364                         }
 365                 } else {
 366                         deb_ts("wrong header\n");
 367                         l = 0;
 368                 }
 369         }
 370
 371         if (l>0)
 372                 memcpy(fc_usb->tmp_buffer, b, l);
 373         fc_usb->tmp_buffer_length = l;
 374 }
 375
 376 static void flexcop_usb_urb_complete(struct urb *urb)
 377 {
 378         struct flexcop_usb *fc_usb = urb->context;
 379         int i;
 380
 381         if (urb->actual_length > 0)
 382                 deb_ts("urb completed, bufsize: %d actlen; %d\n",
 383                         urb->transfer_buffer_length, urb->actual_length);
 384
 385         for (i = 0; i < urb->number_of_packets; i++) {
 386                 if (urb->iso_frame_desc[i].status < 0) {
 387                         err("iso frame descriptor %d has an error: %d\n", i,
 388                                 urb->iso_frame_desc[i].status);
 389                 } else
 390                         if (urb->iso_frame_desc[i].actual_length > 0) {
 391                                 deb_ts("passed %d bytes to the demux\n",
 392                                         urb->iso_frame_desc[i].actual_length);
 393
 394                                 flexcop_usb_process_frame(fc_usb,
 395                                         urb->transfer_buffer +
 396                                                 urb->iso_frame_desc[i].offset,
 397                                         urb->iso_frame_desc[i].actual_length);
 398                         }
 399                 urb->iso_frame_desc[i].status = 0;
 400                 urb->iso_frame_desc[i].actual_length = 0;
 401         }
 402         usb_submit_urb(urb,GFP_ATOMIC);
 403 }
 404
 405 static int flexcop_usb_stream_control(struct flexcop_device *fc, int onoff)
 406 {
 407         /* submit/kill iso packets */
 408         return 0;
 409 }
 410
 411 static void flexcop_usb_transfer_exit(struct flexcop_usb *fc_usb)
 412 {
 413         int i;
 414         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
 415                 if (fc_usb->iso_urb[i] != NULL) {
 416                         deb_ts("unlinking/killing urb no. %d\n",i);
 417                         usb_kill_urb(fc_usb->iso_urb[i]);
 418                         usb_free_urb(fc_usb->iso_urb[i]);
 419                 }
 420
 421         if (fc_usb->iso_buffer != NULL)
 422                 usb_free_coherent(fc_usb->udev,
 423                         fc_usb->buffer_size, fc_usb->iso_buffer,
 424                         fc_usb->dma_addr);
 425 }
 426
 427 static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb)
 428 {
 429         u16 frame_size = le16_to_cpu(
 430                 fc_usb->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
 431         int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO *
 432                 frame_size, i, j, ret;
 433         int buffer_offset = 0;
 434
 435         deb_ts("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n",
 436                B2C2_USB_NUM_ISO_URB,
 437                         B2C2_USB_FRAMES_PER_ISO, frame_size, bufsize);
 438
 439         fc_usb->iso_buffer = usb_alloc_coherent(fc_usb->udev,
 440                         bufsize, GFP_KERNEL, &fc_usb->dma_addr);
 441         if (fc_usb->iso_buffer == NULL)
 442                 return -ENOMEM;
 443
 444         memset(fc_usb->iso_buffer, 0, bufsize);
 445         fc_usb->buffer_size = bufsize;
 446
 447         /* creating iso urbs */
 448         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
 449                 fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,
 450                         GFP_ATOMIC);
 451                 if (fc_usb->iso_urb[i] == NULL) {
 452                         ret = -ENOMEM;
 453                         goto urb_error;
 454                 }
 455         }
 456
 457         /* initialising and submitting iso urbs */
 458         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
 459                 int frame_offset = 0;
 460                 struct urb *urb = fc_usb->iso_urb[i];
 461                 deb_ts("initializing and submitting urb no. %d (buf_offset: %d).\n",
 462                        i, buffer_offset);
 463
 464                 urb->dev = fc_usb->udev;
 465                 urb->context = fc_usb;
 466                 urb->complete = flexcop_usb_urb_complete;
 467                 urb->pipe = B2C2_USB_DATA_PIPE;
 468                 urb->transfer_flags = URB_ISO_ASAP;
 469                 urb->interval = 1;
 470                 urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
 471                 urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
 472                 urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset;
 473
 474                 buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
 475                 for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
 476                         deb_ts("urb no: %d, frame: %d, frame_offset: %d\n",
 477                                         i, j, frame_offset);
 478                         urb->iso_frame_desc[j].offset = frame_offset;
 479                         urb->iso_frame_desc[j].length = frame_size;
 480                         frame_offset += frame_size;
 481                 }
 482
 483                 if ((ret = usb_submit_urb(fc_usb->iso_urb[i],GFP_ATOMIC))) {
 484                         err("submitting urb %d failed with %d.", i, ret);
 485                         goto urb_error;
 486                 }
 487                 deb_ts("submitted urb no. %d.\n",i);
 488         }
 489
 490         /* SRAM */
 491         flexcop_sram_set_dest(fc_usb->fc_dev, FC_SRAM_DEST_MEDIA |
 492                         FC_SRAM_DEST_NET | FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI,
 493                         FC_SRAM_DEST_TARGET_WAN_USB);
 494         flexcop_wan_set_speed(fc_usb->fc_dev, FC_WAN_SPEED_8MBITS);
 495         flexcop_sram_ctrl(fc_usb->fc_dev, 1, 1, 1);
 496         return 0;
 497
 498 urb_error:
 499         flexcop_usb_transfer_exit(fc_usb);
 500         return ret;
 501 }
 502
 503 static int flexcop_usb_init(struct flexcop_usb *fc_usb)
 504 {
 505         /* use the alternate setting with the larges buffer */
 506         int ret = usb_set_interface(fc_usb->udev, 0, 1);
 507
 508         if (ret) {
 509                 err("set interface failed.");
 510                 return ret;
 511         }
 512
 513         if (fc_usb->uintf->cur_altsetting->desc.bNumEndpoints < 1)
 514                 return -ENODEV;
 515
 516         switch (fc_usb->udev->speed) {
 517         case USB_SPEED_LOW:
 518                 err("cannot handle USB speed because it is too slow.");
 519                 return -ENODEV;
 520                 break;
 521         case USB_SPEED_FULL:
 522                 info("running at FULL speed.");
 523                 break;
 524         case USB_SPEED_HIGH:
 525                 info("running at HIGH speed.");
 526                 break;
 527         case USB_SPEED_UNKNOWN: /* fall through */
 528         default:
 529                 err("cannot handle USB speed because it is unknown.");
 530                 return -ENODEV;
 531         }
 532         usb_set_intfdata(fc_usb->uintf, fc_usb);
 533         return 0;
 534 }
 535
 536 static void flexcop_usb_exit(struct flexcop_usb *fc_usb)
 537 {
 538         usb_set_intfdata(fc_usb->uintf, NULL);
 539 }
 540
 541 static int flexcop_usb_probe(struct usb_interface *intf,
 542                 const struct usb_device_id *id)
 543 {
 544         struct usb_device *udev = interface_to_usbdev(intf);
 545         struct flexcop_usb *fc_usb = NULL;
 546         struct flexcop_device *fc = NULL;
 547         int ret;
 548
 549         if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) {
 550                 err("out of memory\n");
 551                 return -ENOMEM;
 552         }
 553
 554         /* general flexcop init */
 555         fc_usb = fc->bus_specific;
 556         fc_usb->fc_dev = fc;
 557         mutex_init(&fc_usb->data_mutex);
 558
 559         fc->read_ibi_reg  = flexcop_usb_read_ibi_reg;
 560         fc->write_ibi_reg = flexcop_usb_write_ibi_reg;
 561         fc->i2c_request = flexcop_usb_i2c_request;
 562         fc->get_mac_addr = flexcop_usb_get_mac_addr;
 563
 564         fc->stream_control = flexcop_usb_stream_control;
 565
 566         fc->pid_filtering = 1;
 567         fc->bus_type = FC_USB;
 568
 569         fc->dev = &udev->dev;
 570         fc->owner = THIS_MODULE;
 571
 572         /* bus specific part */
 573         fc_usb->udev = udev;
 574         fc_usb->uintf = intf;
 575         if ((ret = flexcop_usb_init(fc_usb)) != 0)
 576                 goto err_kfree;
 577
 578         /* init flexcop */
 579         if ((ret = flexcop_device_initialize(fc)) != 0)
 580                 goto err_usb_exit;
 581
 582         /* xfer init */
 583         if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0)
 584                 goto err_fc_exit;
 585
 586         info("%s successfully initialized and connected.", DRIVER_NAME);
 587         return 0;
 588
 589 err_fc_exit:
 590         flexcop_device_exit(fc);
 591 err_usb_exit:
 592         flexcop_usb_exit(fc_usb);
 593 err_kfree:
 594         flexcop_device_kfree(fc);
 595         return ret;
 596 }
 597
 598 static void flexcop_usb_disconnect(struct usb_interface *intf)
 599 {
 600         struct flexcop_usb *fc_usb = usb_get_intfdata(intf);
 601         flexcop_usb_transfer_exit(fc_usb);
 602         flexcop_device_exit(fc_usb->fc_dev);
 603         flexcop_usb_exit(fc_usb);
 604         flexcop_device_kfree(fc_usb->fc_dev);
 605         info("%s successfully deinitialized and disconnected.", DRIVER_NAME);
 606 }
 607
 608 static const struct usb_device_id flexcop_usb_table[] = {
 609         { USB_DEVICE(0x0af7, 0x0101) },
 610         { }
 611 };
 612 MODULE_DEVICE_TABLE (usb, flexcop_usb_table);
 613
 614 /* usb specific object needed to register this driver with the usb subsystem */
 615 static struct usb_driver flexcop_usb_driver = {
 616         .name           = "b2c2_flexcop_usb",
 617         .probe          = flexcop_usb_probe,
 618         .disconnect = flexcop_usb_disconnect,
 619         .id_table       = flexcop_usb_table,
 620 };
 621
 622 module_usb_driver(flexcop_usb_driver);
 623
 624 MODULE_AUTHOR(DRIVER_AUTHOR);
 625 MODULE_DESCRIPTION(DRIVER_NAME);
 626 MODULE_LICENSE("GPL");