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

   1 /*
   2  * This file is part of linux driver the digital TV devices equipped with B2C2 FlexcopII(b)/III
   3  *
   4  * flexcop-usb.c - covers the USB part.
   5  *
   6  * see flexcop.c for copyright information.
   7  */
   8
   9 #define FC_LOG_PREFIX "flexcop_usb"
  10 #include "flexcop-usb.h"
  11 #include "flexcop-common.h"
  12
  13 /* Version information */
  14 #define DRIVER_VERSION "0.1"
  15 #define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV USB Driver"
  16 #define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de>"
  17
  18 /* debug */
  19 #ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
  20 #define dprintk(level,args...) \
  21             do { if ((debug & level)) { printk(args); } } while (0)
  22 #define debug_dump(b,l,method) {\
  23         int i; \
  24         for (i = 0; i < l; i++) method("%02x ", b[i]); \
  25         method("\n");\
  26 }
  27
  28 #define DEBSTATUS ""
  29 #else
  30 #define dprintk(level,args...)
  31 #define debug_dump(b,l,method)
  32 #define DEBSTATUS " (debugging is not enabled)"
  33 #endif
  34
  35 static int debug;
  36 module_param(debug, int, 0644);
  37 MODULE_PARM_DESC(debug, "set debugging level (1=info,ts=2,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 (these are 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) (((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
  56 #define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) (((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
  57
  58 /*
  59  * DKT 020228
  60  * - forget about this VENDOR_BUFFER_SIZE, read and write register
  61  *   deal with DWORD or 4 bytes, that should be should from now on
  62  * - from now on, we don't support anything older than firm 1.00
  63  *   I eliminated the write register as a 2 trip of writing hi word and lo word
  64  *   and force this to write only 4 bytes at a time.
  65  *   NOTE: this should work with all the firmware from 1.00 and newer
  66  */
  67 static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI, u32 *val, u8 read)
  68 {
  69         struct flexcop_usb *fc_usb = fc->bus_specific;
  70         u8 request = read ? B2C2_USB_READ_REG : B2C2_USB_WRITE_REG;
  71         u8 request_type = (read ? USB_DIR_IN : USB_DIR_OUT) | USB_TYPE_VENDOR;
  72         u8 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) | (read ? 0x80 : 0);
  73
  74         int len = usb_control_msg(fc_usb->udev,
  75                         read ? B2C2_USB_CTRL_PIPE_IN : B2C2_USB_CTRL_PIPE_OUT,
  76                         request,
  77                         request_type,  /* 0xc0 read or 0x40 write*/
  78                         wAddress,
  79                         0,
  80                         val,
  81                         sizeof(u32),
  82                         B2C2_WAIT_FOR_OPERATION_RDW * HZ);
  83
  84         if (len != sizeof(u32)) {
  85                 err("error while %s dword from %d (%d).",read ? "reading" : "writing",
  86                         wAddress,wRegOffsPCI);
  87                 return -EIO;
  88         }
  89         return 0;
  90 }
  91
  92 /*
  93  * DKT 010817 - add support for V8 memory read/write and flash update
  94  */
  95 static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb,
  96                 flexcop_usb_request_t req, u8 page, u16 wAddress,
  97                 u8 *pbBuffer,u32 buflen)
  98 {
  99 //      u8 dwRequestType;
 100         u8 request_type = USB_TYPE_VENDOR;
 101         u16 wIndex;
 102         int nWaitTime,pipe,len;
 103
 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 //                      dwRequestType = (u8) RTYPE_READ_V8_MEMORY;
 111                         pipe = B2C2_USB_CTRL_PIPE_IN;
 112                 break;
 113                 case B2C2_USB_WRITE_V8_MEM:
 114                         wIndex |= pbBuffer[0];
 115                         request_type |= USB_DIR_OUT;
 116                         nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
 117 //                      dwRequestType = (u8) RTYPE_WRITE_V8_MEMORY;
 118                         pipe = B2C2_USB_CTRL_PIPE_OUT;
 119                 break;
 120                 case B2C2_USB_FLASH_BLOCK:
 121                         request_type |= USB_DIR_OUT;
 122                         nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
 123 //                      dwRequestType = (u8) RTYPE_WRITE_V8_FLASH;
 124                         pipe = B2C2_USB_CTRL_PIPE_OUT;
 125                 break;
 126                 default:
 127                         deb_info("unsupported request for v8_mem_req %x.\n",req);
 128                 return -EINVAL;
 129         }
 130         deb_v8("v8mem: %02x %02x %04x %04x, len: %d\n",request_type,req,
 131                         wAddress,wIndex,buflen);
 132
 133         len = usb_control_msg(fc_usb->udev,pipe,
 134                         req,
 135                         request_type,
 136                         wAddress,
 137                         wIndex,
 138                         pbBuffer,
 139                         buflen,
 140                         nWaitTime * HZ);
 141
 142         debug_dump(pbBuffer,len,deb_v8);
 143
 144         return len == buflen ? 0 : -EIO;
 145 }
 146
 147 #define bytes_left_to_read_on_page(paddr,buflen) \
 148                         ((V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)) > buflen \
 149                         ? buflen : (V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)))
 150
 151 static int flexcop_usb_memory_req(struct flexcop_usb *fc_usb,flexcop_usb_request_t req,
 152                 flexcop_usb_mem_page_t page_start, u32 addr, int extended, u8 *buf, u32 len)
 153 {
 154         int i,ret = 0;
 155         u16 wMax;
 156         u32 pagechunk = 0;
 157
 158         switch(req) {
 159                 case B2C2_USB_READ_V8_MEM:  wMax = USB_MEM_READ_MAX; break;
 160                 case B2C2_USB_WRITE_V8_MEM:     wMax = USB_MEM_WRITE_MAX; break;
 161                 case B2C2_USB_FLASH_BLOCK:  wMax = USB_FLASH_MAX; break;
 162                 default:
 163                         return -EINVAL;
 164                 break;
 165         }
 166         for (i = 0; i < len;) {
 167                 pagechunk = wMax < bytes_left_to_read_on_page(addr,len) ? wMax : bytes_left_to_read_on_page(addr,len);
 168                 deb_info("%x\n",(addr & V8_MEMORY_PAGE_MASK) | (V8_MEMORY_EXTENDED*extended));
 169                 if ((ret = flexcop_usb_v8_memory_req(fc_usb,req,
 170                                 page_start + (addr / V8_MEMORY_PAGE_SIZE), /* actual page */
 171                                 (addr & V8_MEMORY_PAGE_MASK) | (V8_MEMORY_EXTENDED*extended),
 172                                 &buf[i],pagechunk)) < 0)
 173                         return ret;
 174
 175                 addr += pagechunk;
 176                 len -= pagechunk;
 177         }
 178         return 0;
 179 }
 180
 181 static int flexcop_usb_get_mac_addr(struct flexcop_device *fc, int extended)
 182 {
 183         return flexcop_usb_memory_req(fc->bus_specific,B2C2_USB_READ_V8_MEM,
 184                         V8_MEMORY_PAGE_FLASH,0x1f010,1,fc->dvb_adapter.proposed_mac,6);
 185 }
 186
 187 #if 0
 188 static int flexcop_usb_utility_req(struct flexcop_usb *fc_usb, int set,
 189                 flexcop_usb_utility_function_t func, u8 extra, u16 wIndex,
 190                 u16 buflen, u8 *pvBuffer)
 191 {
 192         u16 wValue;
 193         u8 request_type = (set ? USB_DIR_OUT : USB_DIR_IN) | USB_TYPE_VENDOR;
 194 //      u8 dwRequestType = (u8) RTYPE_GENERIC,
 195         int nWaitTime = 2,
 196                 pipe = set ? B2C2_USB_CTRL_PIPE_OUT : B2C2_USB_CTRL_PIPE_IN,
 197                 len;
 198
 199         wValue = (func << 8) | extra;
 200
 201         len = usb_control_msg(fc_usb->udev,pipe,
 202                         B2C2_USB_UTILITY,
 203                         request_type,
 204                         wValue,
 205                         wIndex,
 206                         pvBuffer,
 207                         buflen,
 208                         nWaitTime * HZ);
 209         return len == buflen ? 0 : -EIO;
 210 }
 211 #endif
 212
 213 /* usb i2c stuff */
 214 static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
 215                 flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
 216                 u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
 217 {
 218         struct flexcop_usb *fc_usb = i2c->fc->bus_specific;
 219         u16 wValue, wIndex;
 220         int nWaitTime,pipe,len;
 221 //      u8 dwRequestType;
 222         u8 request_type = USB_TYPE_VENDOR;
 223
 224         switch (func) {
 225                 case USB_FUNC_I2C_WRITE:
 226                 case USB_FUNC_I2C_MULTIWRITE:
 227                 case USB_FUNC_I2C_REPEATWRITE:
 228                 /* DKT 020208 - add this to support special case of DiSEqC */
 229                 case USB_FUNC_I2C_CHECKWRITE:
 230                         pipe = B2C2_USB_CTRL_PIPE_OUT;
 231                         nWaitTime = 2;
 232 //                      dwRequestType = (u8) RTYPE_GENERIC;
 233                         request_type |= USB_DIR_OUT;
 234                 break;
 235                 case USB_FUNC_I2C_READ:
 236                 case USB_FUNC_I2C_REPEATREAD:
 237                         pipe = B2C2_USB_CTRL_PIPE_IN;
 238                         nWaitTime = 2;
 239 //                      dwRequestType = (u8) RTYPE_GENERIC;
 240                         request_type |= USB_DIR_IN;
 241                 break;
 242                 default:
 243                         deb_info("unsupported function for i2c_req %x\n",func);
 244                         return -EINVAL;
 245         }
 246         wValue = (func << 8) | (i2c->port << 4);
 247         wIndex = (chipaddr << 8 ) | addr;
 248
 249         deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",func,request_type,req,
 250                 wValue & 0xff, wValue >> 8, wIndex & 0xff, wIndex >> 8);
 251
 252         len = usb_control_msg(fc_usb->udev,pipe,
 253                         req,
 254                         request_type,
 255                         wValue,
 256                         wIndex,
 257                         buf,
 258                         buflen,
 259                         nWaitTime * HZ);
 260
 261         return len == buflen ? 0 : -EREMOTEIO;
 262 }
 263
 264 /* actual bus specific access functions, make sure prototype are/will be equal to pci */
 265 static flexcop_ibi_value flexcop_usb_read_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register reg)
 266 {
 267         flexcop_ibi_value val;
 268         val.raw = 0;
 269         flexcop_usb_readwrite_dw(fc,reg, &val.raw, 1);
 270         return val;
 271 }
 272
 273 static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register reg, flexcop_ibi_value val)
 274 {
 275         return flexcop_usb_readwrite_dw(fc,reg, &val.raw, 0);
 276 }
 277
 278 static int flexcop_usb_i2c_request(struct flexcop_i2c_adapter *i2c,
 279         flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
 280 {
 281         if (op == FC_READ)
 282                 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
 283                         USB_FUNC_I2C_READ, chipaddr, addr, buf, len);
 284         else
 285                 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
 286                         USB_FUNC_I2C_WRITE, chipaddr, addr, buf, len);
 287 }
 288
 289 static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb, u8 *buffer, int buffer_length)
 290 {
 291         u8 *b;
 292         int l;
 293
 294         deb_ts("tmp_buffer_length=%d, buffer_length=%d\n", fc_usb->tmp_buffer_length, buffer_length);
 295
 296         if (fc_usb->tmp_buffer_length > 0) {
 297                 memcpy(fc_usb->tmp_buffer+fc_usb->tmp_buffer_length, buffer, buffer_length);
 298                 fc_usb->tmp_buffer_length += buffer_length;
 299                 b = fc_usb->tmp_buffer;
 300                 l = fc_usb->tmp_buffer_length;
 301         } else {
 302                 b=buffer;
 303                 l=buffer_length;
 304         }
 305
 306         while (l >= 190) {
 307                 if (*b == 0xff)
 308                         switch (*(b+1) & 0x03) {
 309                                 case 0x01: /* media packet */
 310                                         if ( *(b+2) == 0x47 )
 311                                                 flexcop_pass_dmx_packets(fc_usb->fc_dev, b+2, 1);
 312                                         else
 313                                                 deb_ts("not ts packet %02x %02x %02x %02x \n", *(b+2), *(b+3), *(b+4), *(b+5) );
 314
 315                                         b += 190;
 316                                         l -= 190;
 317                                 break;
 318                                 default:
 319                                         deb_ts("wrong packet type\n");
 320                                         l = 0;
 321                                 break;
 322                         }
 323                 else {
 324                         deb_ts("wrong header\n");
 325                         l = 0;
 326                 }
 327         }
 328
 329         if (l>0)
 330                 memcpy(fc_usb->tmp_buffer, b, l);
 331         fc_usb->tmp_buffer_length = l;
 332 }
 333
 334 static void flexcop_usb_urb_complete(struct urb *urb)
 335 {
 336         struct flexcop_usb *fc_usb = urb->context;
 337         int i;
 338
 339         if (urb->actual_length > 0)
 340                 deb_ts("urb completed, bufsize: %d actlen; %d\n",urb->transfer_buffer_length, urb->actual_length);
 341
 342         for (i = 0; i < urb->number_of_packets; i++) {
 343                 if (urb->iso_frame_desc[i].status < 0) {
 344                         err("iso frame descriptor %d has an error: %d\n",i,urb->iso_frame_desc[i].status);
 345                 } else
 346                         if (urb->iso_frame_desc[i].actual_length > 0) {
 347                                 deb_ts("passed %d bytes to the demux\n",urb->iso_frame_desc[i].actual_length);
 348
 349                                 flexcop_usb_process_frame(fc_usb,
 350                                         urb->transfer_buffer + urb->iso_frame_desc[i].offset,
 351                                         urb->iso_frame_desc[i].actual_length);
 352                 }
 353                 urb->iso_frame_desc[i].status = 0;
 354                 urb->iso_frame_desc[i].actual_length = 0;
 355         }
 356
 357         usb_submit_urb(urb,GFP_ATOMIC);
 358 }
 359
 360 static int flexcop_usb_stream_control(struct flexcop_device *fc, int onoff)
 361 {
 362         /* submit/kill iso packets */
 363         return 0;
 364 }
 365
 366 static void flexcop_usb_transfer_exit(struct flexcop_usb *fc_usb)
 367 {
 368         int i;
 369         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
 370                 if (fc_usb->iso_urb[i] != NULL) {
 371                         deb_ts("unlinking/killing urb no. %d\n",i);
 372                         usb_kill_urb(fc_usb->iso_urb[i]);
 373                         usb_free_urb(fc_usb->iso_urb[i]);
 374                 }
 375
 376         if (fc_usb->iso_buffer != NULL)
 377                 pci_free_consistent(NULL,fc_usb->buffer_size, fc_usb->iso_buffer, fc_usb->dma_addr);
 378 }
 379
 380 static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb)
 381 {
 382         u16 frame_size = le16_to_cpu(fc_usb->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
 383         int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO * frame_size,i,j,ret;
 384         int buffer_offset = 0;
 385
 386         deb_ts("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n",
 387                         B2C2_USB_NUM_ISO_URB, B2C2_USB_FRAMES_PER_ISO, frame_size,bufsize);
 388
 389         fc_usb->iso_buffer = pci_alloc_consistent(NULL,bufsize,&fc_usb->dma_addr);
 390         if (fc_usb->iso_buffer == NULL)
 391                 return -ENOMEM;
 392         memset(fc_usb->iso_buffer, 0, bufsize);
 393         fc_usb->buffer_size = bufsize;
 394
 395         /* creating iso urbs */
 396         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
 397                 if (!(fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,GFP_ATOMIC))) {
 398                         ret = -ENOMEM;
 399                         goto urb_error;
 400                 }
 401         /* initialising and submitting iso urbs */
 402         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
 403                 int frame_offset = 0;
 404                 struct urb *urb = fc_usb->iso_urb[i];
 405                 deb_ts("initializing and submitting urb no. %d (buf_offset: %d).\n",i,buffer_offset);
 406
 407                 urb->dev = fc_usb->udev;
 408                 urb->context = fc_usb;
 409                 urb->complete = flexcop_usb_urb_complete;
 410                 urb->pipe = B2C2_USB_DATA_PIPE;
 411                 urb->transfer_flags = URB_ISO_ASAP;
 412                 urb->interval = 1;
 413                 urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
 414                 urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
 415                 urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset;
 416
 417                 buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
 418                 for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
 419                         deb_ts("urb no: %d, frame: %d, frame_offset: %d\n",i,j,frame_offset);
 420                         urb->iso_frame_desc[j].offset = frame_offset;
 421                         urb->iso_frame_desc[j].length = frame_size;
 422                         frame_offset += frame_size;
 423                 }
 424
 425                 if ((ret = usb_submit_urb(fc_usb->iso_urb[i],GFP_ATOMIC))) {
 426                         err("submitting urb %d failed with %d.",i,ret);
 427                         goto urb_error;
 428                 }
 429                 deb_ts("submitted urb no. %d.\n",i);
 430         }
 431
 432 /* SRAM */
 433
 434         flexcop_sram_set_dest(fc_usb->fc_dev,FC_SRAM_DEST_MEDIA | FC_SRAM_DEST_NET |
 435                         FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI, FC_SRAM_DEST_TARGET_WAN_USB);
 436         flexcop_wan_set_speed(fc_usb->fc_dev,FC_WAN_SPEED_8MBITS);
 437         flexcop_sram_ctrl(fc_usb->fc_dev,1,1,1);
 438
 439         return 0;
 440
 441 urb_error:
 442         flexcop_usb_transfer_exit(fc_usb);
 443         return ret;
 444 }
 445
 446 static int flexcop_usb_init(struct flexcop_usb *fc_usb)
 447 {
 448         /* use the alternate setting with the larges buffer */
 449         usb_set_interface(fc_usb->udev,0,1);
 450         switch (fc_usb->udev->speed) {
 451                 case USB_SPEED_LOW:
 452                         err("cannot handle USB speed because it is to sLOW.");
 453                         return -ENODEV;
 454                         break;
 455                 case USB_SPEED_FULL:
 456                         info("running at FULL speed.");
 457                         break;
 458                 case USB_SPEED_HIGH:
 459                         info("running at HIGH speed.");
 460                         break;
 461                 case USB_SPEED_UNKNOWN: /* fall through */
 462                 default:
 463                         err("cannot handle USB speed because it is unkown.");
 464                         return -ENODEV;
 465         }
 466         usb_set_intfdata(fc_usb->uintf, fc_usb);
 467         return 0;
 468 }
 469
 470 static void flexcop_usb_exit(struct flexcop_usb *fc_usb)
 471 {
 472         usb_set_intfdata(fc_usb->uintf, NULL);
 473 }
 474
 475 static int flexcop_usb_probe(struct usb_interface *intf,
 476                 const struct usb_device_id *id)
 477 {
 478         struct usb_device *udev = interface_to_usbdev(intf);
 479         struct flexcop_usb *fc_usb = NULL;
 480         struct flexcop_device *fc = NULL;
 481         int ret;
 482
 483         if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) {
 484                 err("out of memory\n");
 485                 return -ENOMEM;
 486         }
 487
 488 /* general flexcop init */
 489         fc_usb = fc->bus_specific;
 490         fc_usb->fc_dev = fc;
 491
 492         fc->read_ibi_reg  = flexcop_usb_read_ibi_reg;
 493         fc->write_ibi_reg = flexcop_usb_write_ibi_reg;
 494         fc->i2c_request = flexcop_usb_i2c_request;
 495         fc->get_mac_addr = flexcop_usb_get_mac_addr;
 496
 497         fc->stream_control = flexcop_usb_stream_control;
 498
 499         fc->pid_filtering = 1;
 500         fc->bus_type = FC_USB;
 501
 502         fc->dev = &udev->dev;
 503         fc->owner = THIS_MODULE;
 504
 505 /* bus specific part */
 506         fc_usb->udev = udev;
 507         fc_usb->uintf = intf;
 508         if ((ret = flexcop_usb_init(fc_usb)) != 0)
 509                 goto err_kfree;
 510
 511 /* init flexcop */
 512         if ((ret = flexcop_device_initialize(fc)) != 0)
 513                 goto err_usb_exit;
 514
 515 /* xfer init */
 516         if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0)
 517                 goto err_fc_exit;
 518
 519         info("%s successfully initialized and connected.",DRIVER_NAME);
 520         return 0;
 521
 522 err_fc_exit:
 523         flexcop_device_exit(fc);
 524 err_usb_exit:
 525         flexcop_usb_exit(fc_usb);
 526 err_kfree:
 527         flexcop_device_kfree(fc);
 528         return ret;
 529 }
 530
 531 static void flexcop_usb_disconnect(struct usb_interface *intf)
 532 {
 533         struct flexcop_usb *fc_usb = usb_get_intfdata(intf);
 534         flexcop_usb_transfer_exit(fc_usb);
 535         flexcop_device_exit(fc_usb->fc_dev);
 536         flexcop_usb_exit(fc_usb);
 537         flexcop_device_kfree(fc_usb->fc_dev);
 538         info("%s successfully deinitialized and disconnected.",DRIVER_NAME);
 539 }
 540
 541 static struct usb_device_id flexcop_usb_table [] = {
 542             { USB_DEVICE(0x0af7, 0x0101) },
 543             { }
 544 };
 545 MODULE_DEVICE_TABLE (usb, flexcop_usb_table);
 546
 547 /* usb specific object needed to register this driver with the usb subsystem */
 548 static struct usb_driver flexcop_usb_driver = {
 549         .name           = "b2c2_flexcop_usb",
 550         .probe          = flexcop_usb_probe,
 551         .disconnect = flexcop_usb_disconnect,
 552         .id_table       = flexcop_usb_table,
 553 };
 554
 555 /* module stuff */
 556 static int __init flexcop_usb_module_init(void)
 557 {
 558         int result;
 559         if ((result = usb_register(&flexcop_usb_driver))) {
 560                 err("usb_register failed. (%d)",result);
 561                 return result;
 562         }
 563
 564         return 0;
 565 }
 566
 567 static void __exit flexcop_usb_module_exit(void)
 568 {
 569         /* deregister this driver from the USB subsystem */
 570         usb_deregister(&flexcop_usb_driver);
 571 }
 572
 573 module_init(flexcop_usb_module_init);
 574 module_exit(flexcop_usb_module_exit);
 575
 576 MODULE_AUTHOR(DRIVER_AUTHOR);
 577 MODULE_DESCRIPTION(DRIVER_NAME);
 578 MODULE_LICENSE("GPL");