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

   1 /*
   2  * Copyright (C) 2004 Patrick Boettcher <patrick.boettcher@desy.de>,
   3  *                    Luca Bertagnolio <>,
   4  *
   5  * based on information provided by John Jurrius from BBTI, Inc.
   6  *
   7  *      This program is free software; you can redistribute it and/or
   8  *      modify it under the terms of the GNU General Public License as
   9  *      published by the Free Software Foundation, version 2.
  10  *
  11  */
  12
  13 #include <linux/config.h>
  14 #include <linux/kernel.h>
  15 #include <linux/usb.h>
  16 #include <linux/moduleparam.h>
  17 #include <linux/pci.h>
  18 #include <linux/version.h>
  19
  20 #include "dmxdev.h"
  21 #include "dvb_demux.h"
  22 #include "dvb_filter.h"
  23 #include "dvb_net.h"
  24 #include "dvb_frontend.h"
  25
  26 /* debug */
  27 #define dprintk(level,args...) \
  28             do { if ((debug & level)) { printk(args); } } while (0)
  29 #define debug_dump(b,l) if (debug) {\
  30         int i; deb_xfer("%s: %d > ",__FUNCTION__,l); \
  31         for (i = 0; i < l; i++) deb_xfer("%02x ", b[i]); \
  32         deb_xfer("\n");\
  33 }
  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 (or-able)).");
  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
  43 /* Version information */
  44 #define DRIVER_VERSION "0.0"
  45 #define DRIVER_DESC "Driver for B2C2/Technisat Air/Cable/Sky-2-PC USB devices"
  46 #define DRIVER_AUTHOR "Patrick Boettcher, patrick.boettcher@desy.de"
  47
  48 /* transfer parameters */
  49 #define B2C2_USB_FRAMES_PER_ISO         4
  50 #define B2C2_USB_NUM_ISO_URB            4    /* TODO check out a good value */
  51
  52 #define B2C2_USB_CTRL_PIPE_IN           usb_rcvctrlpipe(b2c2->udev,0)
  53 #define B2C2_USB_CTRL_PIPE_OUT          usb_sndctrlpipe(b2c2->udev,0)
  54 #define B2C2_USB_DATA_PIPE                      usb_rcvisocpipe(b2c2->udev,0x81)
  55
  56 struct usb_b2c2_usb {
  57         struct usb_device *udev;
  58         struct usb_interface *uintf;
  59
  60         u8 *iso_buffer;
  61         int buffer_size;
  62         dma_addr_t iso_dma_handle;
  63         struct urb *iso_urb[B2C2_USB_NUM_ISO_URB];
  64 };
  65
  66
  67 /*
  68  * USB
  69  * 10 90 34 12 78 56 04 00
  70  * usb_control_msg(udev, usb_sndctrlpipe(udev,0),
  71  * 0x90,
  72  * 0x10,
  73  * 0x1234,
  74  * 0x5678,
  75  * buf,
  76  * 4,
  77  * 5*HZ);
  78  *
  79  * extern int usb_control_msg(struct usb_device *dev, unsigned int pipe,
  80  * __u8 request,
  81  * __u8 requesttype,
  82  * __u16 value,
  83  * __u16 index,
  84  * void *data,
  85  * __u16 size,
  86  * int timeout);
  87  *
  88  */
  89
  90 /* request types */
  91 typedef enum {
  92
  93 /* something is wrong with this part
  94         RTYPE_READ_DW         = (1 << 6),
  95         RTYPE_WRITE_DW_1      = (3 << 6),
  96         RTYPE_READ_V8_MEMORY  = (6 << 6),
  97         RTYPE_WRITE_V8_MEMORY = (7 << 6),
  98         RTYPE_WRITE_V8_FLASH  = (8 << 6),
  99         RTYPE_GENERIC         = (9 << 6),
 100 */
 101         RTYPE_READ_DW = (3 << 6),
 102         RTYPE_WRITE_DW_1 = (1 << 6),
 103
 104         RTYPE_READ_V8_MEMORY  = (6 << 6),
 105         RTYPE_WRITE_V8_MEMORY = (7 << 6),
 106         RTYPE_WRITE_V8_FLASH  = (8 << 6),
 107         RTYPE_GENERIC         = (9 << 6),
 108 } b2c2_usb_request_type_t;
 109
 110 /* request */
 111 typedef enum {
 112         B2C2_USB_WRITE_V8_MEM = 0x04,
 113         B2C2_USB_READ_V8_MEM  = 0x05,
 114         B2C2_USB_READ_REG     = 0x08,
 115         B2C2_USB_WRITE_REG    = 0x0A,
 116 /*      B2C2_USB_WRITEREGLO   = 0x0A, */
 117         B2C2_USB_WRITEREGHI   = 0x0B,
 118         B2C2_USB_FLASH_BLOCK  = 0x10,
 119         B2C2_USB_I2C_REQUEST  = 0x11,
 120         B2C2_USB_UTILITY      = 0x12,
 121 } b2c2_usb_request_t;
 122
 123 /* function definition for I2C_REQUEST */
 124 typedef enum {
 125         USB_FUNC_I2C_WRITE       = 0x01,
 126         USB_FUNC_I2C_MULTIWRITE  = 0x02,
 127         USB_FUNC_I2C_READ        = 0x03,
 128         USB_FUNC_I2C_REPEATWRITE = 0x04,
 129         USB_FUNC_GET_DESCRIPTOR  = 0x05,
 130         USB_FUNC_I2C_REPEATREAD  = 0x06,
 131 /* DKT 020208 - add this to support special case of DiSEqC */
 132         USB_FUNC_I2C_CHECKWRITE  = 0x07,
 133         USB_FUNC_I2C_CHECKRESULT = 0x08,
 134 } b2c2_usb_i2c_function_t;
 135
 136 /*
 137  * function definition for UTILITY request 0x12
 138  * DKT 020304 - new utility function
 139  */
 140 typedef enum {
 141         UTILITY_SET_FILTER          = 0x01,
 142         UTILITY_DATA_ENABLE         = 0x02,
 143         UTILITY_FLEX_MULTIWRITE     = 0x03,
 144         UTILITY_SET_BUFFER_SIZE     = 0x04,
 145         UTILITY_FLEX_OPERATOR       = 0x05,
 146         UTILITY_FLEX_RESET300_START = 0x06,
 147         UTILITY_FLEX_RESET300_STOP  = 0x07,
 148         UTILITY_FLEX_RESET300       = 0x08,
 149         UTILITY_SET_ISO_SIZE        = 0x09,
 150         UTILITY_DATA_RESET          = 0x0A,
 151         UTILITY_GET_DATA_STATUS     = 0x10,
 152         UTILITY_GET_V8_REG          = 0x11,
 153 /* DKT 020326 - add function for v1.14 */
 154         UTILITY_SRAM_WRITE          = 0x12,
 155         UTILITY_SRAM_READ           = 0x13,
 156         UTILITY_SRAM_TESTFILL       = 0x14,
 157         UTILITY_SRAM_TESTSET        = 0x15,
 158         UTILITY_SRAM_TESTVERIFY     = 0x16,
 159 } b2c2_usb_utility_function_t;
 160
 161 #define B2C2_WAIT_FOR_OPERATION_RW  1  // 1 s
 162 #define B2C2_WAIT_FOR_OPERATION_RDW 3  // 3 s
 163 #define B2C2_WAIT_FOR_OPERATION_WDW 1  // 1 s
 164
 165 #define B2C2_WAIT_FOR_OPERATION_V8READ   3  // 3 s
 166 #define B2C2_WAIT_FOR_OPERATION_V8WRITE  3  // 3 s
 167 #define B2C2_WAIT_FOR_OPERATION_V8FLASH  3  // 3 s
 168
 169 /* JLP 111700: we will include the 1 bit gap between the upper and lower 3 bits
 170  * in the IBI address, to make the V8 code simpler.
 171  * PCI ADDRESS FORMAT: 0x71C -> 0000 0111 0001 1100 (these are the six bits used)
 172  *                  in general: 0000 0HHH 000L LL00
 173  * IBI ADDRESS FORMAT:                    RHHH BLLL
 174  *
 175  * where R is the read(1)/write(0) bit, B is the busy bit
 176  * and HHH and LLL are the two sets of three bits from the PCI address.
 177  */
 178 #define B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(usPCI) (u8) (((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
 179 #define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) (((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
 180
 181 /*
 182  * DKT 020228 - forget about this VENDOR_BUFFER_SIZE, read and write register
 183  * deal with DWORD or 4 bytes, that should be should from now on
 184  */
 185 static u32 b2c2_usb_read_dw(struct usb_b2c2_usb *b2c2, u16 wRegOffsPCI)
 186 {
 187         u32 val;
 188         u16 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) | 0x0080;
 189         int len = usb_control_msg(b2c2->udev,
 190                         B2C2_USB_CTRL_PIPE_IN,
 191                         B2C2_USB_READ_REG,
 192                         RTYPE_READ_DW,
 193                         wAddress,
 194                         0,
 195                         &val,
 196                         sizeof(u32),
 197                         B2C2_WAIT_FOR_OPERATION_RDW * 1000);
 198
 199         if (len != sizeof(u32)) {
 200                 err("error while reading dword from %d (%d).",wAddress,wRegOffsPCI);
 201                 return -EIO;
 202         } else
 203                 return val;
 204 }
 205
 206 /*
 207  * DKT 020228 - from now on, we don't support anything older than firm 1.00
 208  * I eliminated the write register as a 2 trip of writing hi word and lo word
 209  * and force this to write only 4 bytes at a time.
 210  * NOTE: this should work with all the firmware from 1.00 and newer
 211  */
 212 static int b2c2_usb_write_dw(struct usb_b2c2_usb *b2c2, u16 wRegOffsPCI, u32 val)
 213 {
 214         u16 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI);
 215         int len = usb_control_msg(b2c2->udev,
 216                         B2C2_USB_CTRL_PIPE_OUT,
 217                         B2C2_USB_WRITE_REG,
 218                         RTYPE_WRITE_DW_1,
 219                         wAddress,
 220                         0,
 221                         &val,
 222                         sizeof(u32),
 223                         B2C2_WAIT_FOR_OPERATION_RDW * 1000);
 224
 225         if (len != sizeof(u32)) {
 226                 err("error while reading dword from %d (%d).",wAddress,wRegOffsPCI);
 227                 return -EIO;
 228         } else
 229                 return 0;
 230 }
 231
 232 /*
 233  * DKT 010817 - add support for V8 memory read/write and flash update
 234  */
 235 static int b2c2_usb_v8_memory_req(struct usb_b2c2_usb *b2c2,
 236                 b2c2_usb_request_t req, u8 page, u16 wAddress,
 237                 u16 buflen, u8 *pbBuffer)
 238 {
 239         u8 dwRequestType;
 240         u16 wIndex;
 241         int nWaitTime,pipe,len;
 242
 243         wIndex = page << 8;
 244
 245         switch (req) {
 246                 case B2C2_USB_READ_V8_MEM:
 247                         nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ;
 248                         dwRequestType = (u8) RTYPE_READ_V8_MEMORY;
 249                         pipe = B2C2_USB_CTRL_PIPE_IN;
 250                 break;
 251                 case B2C2_USB_WRITE_V8_MEM:
 252                         wIndex |= pbBuffer[0];
 253                         nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
 254                         dwRequestType = (u8) RTYPE_WRITE_V8_MEMORY;
 255                         pipe = B2C2_USB_CTRL_PIPE_OUT;
 256                 break;
 257                 case B2C2_USB_FLASH_BLOCK:
 258                         nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
 259                         dwRequestType = (u8) RTYPE_WRITE_V8_FLASH;
 260                         pipe = B2C2_USB_CTRL_PIPE_OUT;
 261                 break;
 262                 default:
 263                         deb_info("unsupported request for v8_mem_req %x.\n",req);
 264                 return -EINVAL;
 265         }
 266         len = usb_control_msg(b2c2->udev,pipe,
 267                         req,
 268                         dwRequestType,
 269                         wAddress,
 270                         wIndex,
 271                         pbBuffer,
 272                         buflen,
 273                         nWaitTime * 1000);
 274         return len == buflen ? 0 : -EIO;
 275 }
 276
 277 static int b2c2_usb_i2c_req(struct usb_b2c2_usb *b2c2,
 278                 b2c2_usb_request_t req, b2c2_usb_i2c_function_t func,
 279                 u8 port, u8 chipaddr, u8 addr, u8 buflen, u8 *buf)
 280 {
 281         u16 wValue, wIndex;
 282         int nWaitTime,pipe,len;
 283         u8 dwRequestType;
 284
 285         switch (func) {
 286                 case USB_FUNC_I2C_WRITE:
 287                 case USB_FUNC_I2C_MULTIWRITE:
 288                 case USB_FUNC_I2C_REPEATWRITE:
 289                 /* DKT 020208 - add this to support special case of DiSEqC */
 290                 case USB_FUNC_I2C_CHECKWRITE:
 291                         pipe = B2C2_USB_CTRL_PIPE_OUT;
 292                         nWaitTime = 2;
 293                         dwRequestType = (u8) RTYPE_GENERIC;
 294                 break;
 295                 case USB_FUNC_I2C_READ:
 296                 case USB_FUNC_I2C_REPEATREAD:
 297                         pipe = B2C2_USB_CTRL_PIPE_IN;
 298                         nWaitTime = 2;
 299                         dwRequestType = (u8) RTYPE_GENERIC;
 300                 break;
 301                 default:
 302                         deb_info("unsupported function for i2c_req %x\n",func);
 303                         return -EINVAL;
 304         }
 305         wValue = (func << 8 ) | port;
 306         wIndex = (chipaddr << 8 ) | addr;
 307
 308         len = usb_control_msg(b2c2->udev,pipe,
 309                         req,
 310                         dwRequestType,
 311                         addr,
 312                         wIndex,
 313                         buf,
 314                         buflen,
 315                         nWaitTime * 1000);
 316         return len == buflen ? 0 : -EIO;
 317 }
 318
 319 int static b2c2_usb_utility_req(struct usb_b2c2_usb *b2c2, int set,
 320                 b2c2_usb_utility_function_t func, u8 extra, u16 wIndex,
 321                 u16 buflen, u8 *pvBuffer)
 322 {
 323         u16 wValue;
 324         int nWaitTime = 2,
 325                 pipe = set ? B2C2_USB_CTRL_PIPE_OUT : B2C2_USB_CTRL_PIPE_IN,
 326                 len;
 327
 328         wValue = (func << 8) | extra;
 329
 330         len = usb_control_msg(b2c2->udev,pipe,
 331                         B2C2_USB_UTILITY,
 332                         (u8) RTYPE_GENERIC,
 333                         wValue,
 334                         wIndex,
 335                         pvBuffer,
 336                         buflen,
 337                         nWaitTime * 1000);
 338         return len == buflen ? 0 : -EIO;
 339 }
 340
 341
 342
 343 static void b2c2_dumpfourreg(struct usb_b2c2_usb *b2c2, u16 offs)
 344 {
 345         u32 r0,r1,r2,r3;
 346         r0 = r1 = r2 = r3 = 0;
 347         r0 = b2c2_usb_read_dw(b2c2,offs);
 348         r1 = b2c2_usb_read_dw(b2c2,offs + 0x04);
 349         r2 = b2c2_usb_read_dw(b2c2,offs + 0x08);
 350         r3 = b2c2_usb_read_dw(b2c2,offs + 0x0c);
 351         deb_ctrl("dump: offset: %03x, %08x, %08x, %08x, %08x\n",offs,r0,r1,r2,r3);
 352 }
 353
 354 static void b2c2_urb_complete(struct urb *urb, struct pt_regs *ptregs)
 355 {
 356         struct usb_b2c2_usb *b2c2 = urb->context;
 357         deb_ts("urb completed, bufsize: %d\n",urb->transfer_buffer_length);
 358
 359 //      urb_submit_urb(urb,GFP_ATOMIC); enable for real action
 360 }
 361
 362 static void b2c2_exit_usb(struct usb_b2c2_usb *b2c2)
 363 {
 364         int i;
 365         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
 366                 if (b2c2->iso_urb[i] != NULL) { /* not sure about unlink_urb and iso-urbs TODO */
 367                         deb_info("unlinking/killing urb no. %d\n",i);
 368 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,7)
 369                         usb_unlink_urb(b2c2->iso_urb[i]);
 370 #else
 371                         usb_kill_urb(b2c2->iso_urb[i]);
 372 #endif
 373                         usb_free_urb(b2c2->iso_urb[i]);
 374                 }
 375
 376         if (b2c2->iso_buffer != NULL)
 377                 pci_free_consistent(NULL,b2c2->buffer_size, b2c2->iso_buffer, b2c2->iso_dma_handle);
 378
 379 }
 380
 381 static int b2c2_init_usb(struct usb_b2c2_usb *b2c2)
 382 {
 383         u16 frame_size = le16_to_cpu(b2c2->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
 384         int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO * frame_size,i,j,ret;
 385         int buffer_offset = 0;
 386
 387         deb_info("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n",
 388                         B2C2_USB_NUM_ISO_URB, B2C2_USB_FRAMES_PER_ISO, frame_size,bufsize);
 389
 390         b2c2->iso_buffer = pci_alloc_consistent(NULL,bufsize,&b2c2->iso_dma_handle);
 391         if (b2c2->iso_buffer == NULL)
 392                 return -ENOMEM;
 393         memset(b2c2->iso_buffer, 0, bufsize);
 394         b2c2->buffer_size = bufsize;
 395
 396         /* creating iso urbs */
 397         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
 398                 if (!(b2c2->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,GFP_ATOMIC))) {
 399                         ret = -ENOMEM;
 400                         goto urb_error;
 401                 }
 402         /* initialising and submitting iso urbs */
 403         for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
 404                 int frame_offset = 0;
 405                 struct urb *urb = b2c2->iso_urb[i];
 406                 deb_info("initializing and submitting urb no. %d (buf_offset: %d).\n",i,buffer_offset);
 407
 408                 urb->dev = b2c2->udev;
 409                 urb->context = b2c2;
 410                 urb->complete = b2c2_urb_complete;
 411                 urb->pipe = B2C2_USB_DATA_PIPE;
 412                 urb->transfer_flags = URB_ISO_ASAP;
 413                 urb->interval = 1;
 414                 urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
 415                 urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
 416                 urb->transfer_buffer = b2c2->iso_buffer + buffer_offset;
 417
 418                 buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
 419                 for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
 420                         deb_info("urb no: %d, frame: %d, frame_offset: %d\n",i,j,frame_offset);
 421                         urb->iso_frame_desc[j].offset = frame_offset;
 422                         urb->iso_frame_desc[j].length = frame_size;
 423                         frame_offset += frame_size;
 424                 }
 425
 426                 if ((ret = usb_submit_urb(b2c2->iso_urb[i],GFP_ATOMIC))) {
 427                         err("submitting urb %d failed with %d.",i,ret);
 428                         goto urb_error;
 429                 }
 430                 deb_info("submitted urb no. %d.\n",i);
 431         }
 432
 433         ret = 0;
 434         goto success;
 435 urb_error:
 436         b2c2_exit_usb(b2c2);
 437 success:
 438         return ret;
 439 }
 440
 441 static int b2c2_usb_probe(struct usb_interface *intf,
 442                 const struct usb_device_id *id)
 443 {
 444         struct usb_device *udev = interface_to_usbdev(intf);
 445         struct usb_b2c2_usb *b2c2 = NULL;
 446         int ret;
 447
 448         b2c2 = kmalloc(sizeof(struct usb_b2c2_usb),GFP_KERNEL);
 449         if (b2c2 == NULL) {
 450                 err("no memory");
 451                 return -ENOMEM;
 452         }
 453         b2c2->udev = udev;
 454         b2c2->uintf = intf;
 455
 456         /* use the alternate setting with the larges buffer */
 457         usb_set_interface(udev,0,1);
 458
 459         if ((ret = b2c2_init_usb(b2c2)))
 460                 goto usb_init_error;
 461
 462         usb_set_intfdata(intf,b2c2);
 463
 464         switch (udev->speed) {
 465                 case USB_SPEED_LOW:
 466                         err("cannot handle USB speed because it is to sLOW.");
 467                         break;
 468                 case USB_SPEED_FULL:
 469                         info("running at FULL speed.");
 470                         break;
 471                 case USB_SPEED_HIGH:
 472                         info("running at HIGH speed.");
 473                         break;
 474                 case USB_SPEED_UNKNOWN: /* fall through */
 475                 default:
 476                         err("cannot handle USB speed because it is unkown.");
 477                 break;
 478         }
 479
 480         b2c2_dumpfourreg(b2c2,0x200);
 481         b2c2_dumpfourreg(b2c2,0x300);
 482         b2c2_dumpfourreg(b2c2,0x400);
 483         b2c2_dumpfourreg(b2c2,0x700);
 484
 485
 486         if (ret == 0)
 487                 info("%s successfully initialized and connected.",DRIVER_DESC);
 488         else
 489                 info("%s error while loading driver (%d)",DRIVER_DESC,ret);
 490
 491         ret = 0;
 492         goto success;
 493
 494 usb_init_error:
 495         kfree(b2c2);
 496 success:
 497         return ret;
 498 }
 499
 500 static void b2c2_usb_disconnect(struct usb_interface *intf)
 501 {
 502         struct usb_b2c2_usb *b2c2 = usb_get_intfdata(intf);
 503         usb_set_intfdata(intf,NULL);
 504         if (b2c2 != NULL) {
 505                 b2c2_exit_usb(b2c2);
 506                 kfree(b2c2);
 507         }
 508         info("%s successfully deinitialized and disconnected.",DRIVER_DESC);
 509
 510 }
 511
 512 static struct usb_device_id b2c2_usb_table [] = {
 513             { USB_DEVICE(0x0af7, 0x0101) }
 514 };
 515
 516 /* usb specific object needed to register this driver with the usb subsystem */
 517 static struct usb_driver b2c2_usb_driver = {
 518         .owner          = THIS_MODULE,
 519         .name           = "dvb_b2c2_usb",
 520         .probe          = b2c2_usb_probe,
 521         .disconnect = b2c2_usb_disconnect,
 522         .id_table       = b2c2_usb_table,
 523 };
 524
 525 /* module stuff */
 526 static int __init b2c2_usb_init(void)
 527 {
 528         int result;
 529         if ((result = usb_register(&b2c2_usb_driver))) {
 530                 err("usb_register failed. Error number %d",result);
 531                 return result;
 532         }
 533
 534         return 0;
 535 }
 536
 537 static void __exit b2c2_usb_exit(void)
 538 {
 539         /* deregister this driver from the USB subsystem */
 540         usb_deregister(&b2c2_usb_driver);
 541 }
 542
 543 module_init (b2c2_usb_init);
 544 module_exit (b2c2_usb_exit);
 545
 546 MODULE_AUTHOR(DRIVER_AUTHOR);
 547 MODULE_DESCRIPTION(DRIVER_DESC);
 548 MODULE_LICENSE("GPL");
 549 MODULE_DEVICE_TABLE(usb, b2c2_usb_table);