drivers/usb/serial/ssu100.c

   1 /*
   2  * usb-serial driver for Quatech SSU-100
   3  *
   4  * based on ftdi_sio.c and the original serqt_usb.c from Quatech
   5  *
   6  */
   7
   8 #include <linux/errno.h>
   9 #include <linux/init.h>
  10 #include <linux/slab.h>
  11 #include <linux/tty.h>
  12 #include <linux/tty_driver.h>
  13 #include <linux/tty_flip.h>
  14 #include <linux/module.h>
  15 #include <linux/serial.h>
  16 #include <linux/usb.h>
  17 #include <linux/usb/serial.h>
  18 #include <linux/serial_reg.h>
  19 #include <linux/uaccess.h>
  20
  21 #define QT_OPEN_CLOSE_CHANNEL       0xca
  22 #define QT_SET_GET_DEVICE           0xc2
  23 #define QT_SET_GET_REGISTER         0xc0
  24 #define QT_GET_SET_PREBUF_TRIG_LVL  0xcc
  25 #define QT_SET_ATF                  0xcd
  26 #define QT_GET_SET_UART             0xc1
  27 #define QT_TRANSFER_IN              0xc0
  28 #define QT_HW_FLOW_CONTROL_MASK     0xc5
  29 #define QT_SW_FLOW_CONTROL_MASK     0xc6
  30
  31 #define  SERIAL_MSR_MASK            0xf0
  32
  33 #define  SERIAL_CRTSCTS ((UART_MCR_RTS << 8) | UART_MSR_CTS)
  34
  35 #define  SERIAL_EVEN_PARITY         (UART_LCR_PARITY | UART_LCR_EPAR)
  36
  37 #define  MAX_BAUD_RATE              460800
  38
  39 #define ATC_DISABLED                0x00
  40 #define DUPMODE_BITS        0xc0
  41 #define RR_BITS             0x03
  42 #define LOOPMODE_BITS       0x41
  43 #define RS232_MODE          0x00
  44 #define RTSCTS_TO_CONNECTOR 0x40
  45 #define CLKS_X4             0x02
  46 #define FULLPWRBIT          0x00000080
  47 #define NEXT_BOARD_POWER_BIT        0x00000004
  48
  49 /* Version Information */
  50 #define DRIVER_VERSION "v0.1"
  51 #define DRIVER_DESC "Quatech SSU-100 USB to Serial Driver"
  52
  53 #define USB_VENDOR_ID_QUATECH   0x061d  /* Quatech VID */
  54 #define QUATECH_SSU100  0xC020  /* SSU100 */
  55
  56 static const struct usb_device_id id_table[] = {
  57         {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU100)},
  58         {}                      /* Terminating entry */
  59 };
  60 MODULE_DEVICE_TABLE(usb, id_table);
  61
  62 struct ssu100_port_private {
  63         spinlock_t status_lock;
  64         u8 shadowLSR;
  65         u8 shadowMSR;
  66         wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
  67         struct async_icount icount;
  68 };
  69
  70 static inline int ssu100_control_msg(struct usb_device *dev,
  71                                      u8 request, u16 data, u16 index)
  72 {
  73         return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
  74                                request, 0x40, data, index,
  75                                NULL, 0, 300);
  76 }
  77
  78 static inline int ssu100_setdevice(struct usb_device *dev, u8 *data)
  79 {
  80         u16 x = ((u16)(data[1] << 8) | (u16)(data[0]));
  81
  82         return ssu100_control_msg(dev, QT_SET_GET_DEVICE, x, 0);
  83 }
  84
  85
  86 static inline int ssu100_getdevice(struct usb_device *dev, u8 *data)
  87 {
  88         return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
  89                                QT_SET_GET_DEVICE, 0xc0, 0, 0,
  90                                data, 3, 300);
  91 }
  92
  93 static inline int ssu100_getregister(struct usb_device *dev,
  94                                      unsigned short uart,
  95                                      unsigned short reg,
  96                                      u8 *data)
  97 {
  98         return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
  99                                QT_SET_GET_REGISTER, 0xc0, reg,
 100                                uart, data, sizeof(*data), 300);
 101
 102 }
 103
 104
 105 static inline int ssu100_setregister(struct usb_device *dev,
 106                                      unsigned short uart,
 107                                      unsigned short reg,
 108                                      u16 data)
 109 {
 110         u16 value = (data << 8) | reg;
 111
 112         return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 113                                QT_SET_GET_REGISTER, 0x40, value, uart,
 114                                NULL, 0, 300);
 115
 116 }
 117
 118 #define set_mctrl(dev, set)             update_mctrl((dev), (set), 0)
 119 #define clear_mctrl(dev, clear) update_mctrl((dev), 0, (clear))
 120
 121 /* these do not deal with device that have more than 1 port */
 122 static inline int update_mctrl(struct usb_device *dev, unsigned int set,
 123                                unsigned int clear)
 124 {
 125         unsigned urb_value;
 126         int result;
 127
 128         if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
 129                 dev_dbg(&dev->dev, "%s - DTR|RTS not being set|cleared\n", __func__);
 130                 return 0;       /* no change */
 131         }
 132
 133         clear &= ~set;  /* 'set' takes precedence over 'clear' */
 134         urb_value = 0;
 135         if (set & TIOCM_DTR)
 136                 urb_value |= UART_MCR_DTR;
 137         if (set & TIOCM_RTS)
 138                 urb_value |= UART_MCR_RTS;
 139
 140         result = ssu100_setregister(dev, 0, UART_MCR, urb_value);
 141         if (result < 0)
 142                 dev_dbg(&dev->dev, "%s Error from MODEM_CTRL urb\n", __func__);
 143
 144         return result;
 145 }
 146
 147 static int ssu100_initdevice(struct usb_device *dev)
 148 {
 149         u8 *data;
 150         int result = 0;
 151
 152         data = kzalloc(3, GFP_KERNEL);
 153         if (!data)
 154                 return -ENOMEM;
 155
 156         result = ssu100_getdevice(dev, data);
 157         if (result < 0) {
 158                 dev_dbg(&dev->dev, "%s - get_device failed %i\n", __func__, result);
 159                 goto out;
 160         }
 161
 162         data[1] &= ~FULLPWRBIT;
 163
 164         result = ssu100_setdevice(dev, data);
 165         if (result < 0) {
 166                 dev_dbg(&dev->dev, "%s - setdevice failed %i\n", __func__, result);
 167                 goto out;
 168         }
 169
 170         result = ssu100_control_msg(dev, QT_GET_SET_PREBUF_TRIG_LVL, 128, 0);
 171         if (result < 0) {
 172                 dev_dbg(&dev->dev, "%s - set prebuffer level failed %i\n", __func__, result);
 173                 goto out;
 174         }
 175
 176         result = ssu100_control_msg(dev, QT_SET_ATF, ATC_DISABLED, 0);
 177         if (result < 0) {
 178                 dev_dbg(&dev->dev, "%s - set ATFprebuffer level failed %i\n", __func__, result);
 179                 goto out;
 180         }
 181
 182         result = ssu100_getdevice(dev, data);
 183         if (result < 0) {
 184                 dev_dbg(&dev->dev, "%s - get_device failed %i\n", __func__, result);
 185                 goto out;
 186         }
 187
 188         data[0] &= ~(RR_BITS | DUPMODE_BITS);
 189         data[0] |= CLKS_X4;
 190         data[1] &= ~(LOOPMODE_BITS);
 191         data[1] |= RS232_MODE;
 192
 193         result = ssu100_setdevice(dev, data);
 194         if (result < 0) {
 195                 dev_dbg(&dev->dev, "%s - setdevice failed %i\n", __func__, result);
 196                 goto out;
 197         }
 198
 199 out:    kfree(data);
 200         return result;
 201
 202 }
 203
 204
 205 static void ssu100_set_termios(struct tty_struct *tty,
 206                                struct usb_serial_port *port,
 207                                struct ktermios *old_termios)
 208 {
 209         struct usb_device *dev = port->serial->dev;
 210         struct ktermios *termios = &tty->termios;
 211         u16 baud, divisor, remainder;
 212         unsigned int cflag = termios->c_cflag;
 213         u16 urb_value = 0; /* will hold the new flags */
 214         int result;
 215
 216         if (cflag & PARENB) {
 217                 if (cflag & PARODD)
 218                         urb_value |= UART_LCR_PARITY;
 219                 else
 220                         urb_value |= SERIAL_EVEN_PARITY;
 221         }
 222
 223         switch (cflag & CSIZE) {
 224         case CS5:
 225                 urb_value |= UART_LCR_WLEN5;
 226                 break;
 227         case CS6:
 228                 urb_value |= UART_LCR_WLEN6;
 229                 break;
 230         case CS7:
 231                 urb_value |= UART_LCR_WLEN7;
 232                 break;
 233         default:
 234         case CS8:
 235                 urb_value |= UART_LCR_WLEN8;
 236                 break;
 237         }
 238
 239         baud = tty_get_baud_rate(tty);
 240         if (!baud)
 241                 baud = 9600;
 242
 243         dev_dbg(&port->dev, "%s - got baud = %d\n", __func__, baud);
 244
 245
 246         divisor = MAX_BAUD_RATE / baud;
 247         remainder = MAX_BAUD_RATE % baud;
 248         if (((remainder * 2) >= baud) && (baud != 110))
 249                 divisor++;
 250
 251         urb_value = urb_value << 8;
 252
 253         result = ssu100_control_msg(dev, QT_GET_SET_UART, divisor, urb_value);
 254         if (result < 0)
 255                 dev_dbg(&port->dev, "%s - set uart failed\n", __func__);
 256
 257         if (cflag & CRTSCTS)
 258                 result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
 259                                             SERIAL_CRTSCTS, 0);
 260         else
 261                 result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
 262                                             0, 0);
 263         if (result < 0)
 264                 dev_dbg(&port->dev, "%s - set HW flow control failed\n", __func__);
 265
 266         if (I_IXOFF(tty) || I_IXON(tty)) {
 267                 u16 x = ((u16)(START_CHAR(tty) << 8) | (u16)(STOP_CHAR(tty)));
 268
 269                 result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
 270                                             x, 0);
 271         } else
 272                 result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
 273                                             0, 0);
 274
 275         if (result < 0)
 276                 dev_dbg(&port->dev, "%s - set SW flow control failed\n", __func__);
 277
 278 }
 279
 280
 281 static int ssu100_open(struct tty_struct *tty, struct usb_serial_port *port)
 282 {
 283         struct usb_device *dev = port->serial->dev;
 284         struct ssu100_port_private *priv = usb_get_serial_port_data(port);
 285         u8 *data;
 286         int result;
 287         unsigned long flags;
 288
 289         data = kzalloc(2, GFP_KERNEL);
 290         if (!data)
 291                 return -ENOMEM;
 292
 293         result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 294                                  QT_OPEN_CLOSE_CHANNEL,
 295                                  QT_TRANSFER_IN, 0x01,
 296                                  0, data, 2, 300);
 297         if (result < 0) {
 298                 dev_dbg(&port->dev, "%s - open failed %i\n", __func__, result);
 299                 kfree(data);
 300                 return result;
 301         }
 302
 303         spin_lock_irqsave(&priv->status_lock, flags);
 304         priv->shadowLSR = data[0];
 305         priv->shadowMSR = data[1];
 306         spin_unlock_irqrestore(&priv->status_lock, flags);
 307
 308         kfree(data);
 309
 310 /* set to 9600 */
 311         result = ssu100_control_msg(dev, QT_GET_SET_UART, 0x30, 0x0300);
 312         if (result < 0)
 313                 dev_dbg(&port->dev, "%s - set uart failed\n", __func__);
 314
 315         if (tty)
 316                 ssu100_set_termios(tty, port, &tty->termios);
 317
 318         return usb_serial_generic_open(tty, port);
 319 }
 320
 321 static void ssu100_close(struct usb_serial_port *port)
 322 {
 323         usb_serial_generic_close(port);
 324 }
 325
 326 static int get_serial_info(struct usb_serial_port *port,
 327                            struct serial_struct __user *retinfo)
 328 {
 329         struct serial_struct tmp;
 330
 331         if (!retinfo)
 332                 return -EFAULT;
 333
 334         memset(&tmp, 0, sizeof(tmp));
 335         tmp.line                = port->serial->minor;
 336         tmp.port                = 0;
 337         tmp.irq                 = 0;
 338         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
 339         tmp.xmit_fifo_size      = port->bulk_out_size;
 340         tmp.baud_base           = 9600;
 341         tmp.close_delay         = 5*HZ;
 342         tmp.closing_wait        = 30*HZ;
 343
 344         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
 345                 return -EFAULT;
 346         return 0;
 347 }
 348
 349 static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
 350 {
 351         struct ssu100_port_private *priv = usb_get_serial_port_data(port);
 352         struct async_icount prev, cur;
 353         unsigned long flags;
 354
 355         spin_lock_irqsave(&priv->status_lock, flags);
 356         prev = priv->icount;
 357         spin_unlock_irqrestore(&priv->status_lock, flags);
 358
 359         while (1) {
 360                 wait_event_interruptible(priv->delta_msr_wait,
 361                                          ((priv->icount.rng != prev.rng) ||
 362                                           (priv->icount.dsr != prev.dsr) ||
 363                                           (priv->icount.dcd != prev.dcd) ||
 364                                           (priv->icount.cts != prev.cts)));
 365
 366                 if (signal_pending(current))
 367                         return -ERESTARTSYS;
 368
 369                 spin_lock_irqsave(&priv->status_lock, flags);
 370                 cur = priv->icount;
 371                 spin_unlock_irqrestore(&priv->status_lock, flags);
 372
 373                 if ((prev.rng == cur.rng) &&
 374                     (prev.dsr == cur.dsr) &&
 375                     (prev.dcd == cur.dcd) &&
 376                     (prev.cts == cur.cts))
 377                         return -EIO;
 378
 379                 if ((arg & TIOCM_RNG && (prev.rng != cur.rng)) ||
 380                     (arg & TIOCM_DSR && (prev.dsr != cur.dsr)) ||
 381                     (arg & TIOCM_CD  && (prev.dcd != cur.dcd)) ||
 382                     (arg & TIOCM_CTS && (prev.cts != cur.cts)))
 383                         return 0;
 384         }
 385         return 0;
 386 }
 387
 388 static int ssu100_get_icount(struct tty_struct *tty,
 389                         struct serial_icounter_struct *icount)
 390 {
 391         struct usb_serial_port *port = tty->driver_data;
 392         struct ssu100_port_private *priv = usb_get_serial_port_data(port);
 393         struct async_icount cnow = priv->icount;
 394
 395         icount->cts = cnow.cts;
 396         icount->dsr = cnow.dsr;
 397         icount->rng = cnow.rng;
 398         icount->dcd = cnow.dcd;
 399         icount->rx = cnow.rx;
 400         icount->tx = cnow.tx;
 401         icount->frame = cnow.frame;
 402         icount->overrun = cnow.overrun;
 403         icount->parity = cnow.parity;
 404         icount->brk = cnow.brk;
 405         icount->buf_overrun = cnow.buf_overrun;
 406
 407         return 0;
 408 }
 409
 410
 411
 412 static int ssu100_ioctl(struct tty_struct *tty,
 413                     unsigned int cmd, unsigned long arg)
 414 {
 415         struct usb_serial_port *port = tty->driver_data;
 416
 417         dev_dbg(&port->dev, "%s cmd 0x%04x\n", __func__, cmd);
 418
 419         switch (cmd) {
 420         case TIOCGSERIAL:
 421                 return get_serial_info(port,
 422                                        (struct serial_struct __user *) arg);
 423
 424         case TIOCMIWAIT:
 425                 return wait_modem_info(port, arg);
 426
 427         default:
 428                 break;
 429         }
 430
 431         dev_dbg(&port->dev, "%s arg not supported\n", __func__);
 432
 433         return -ENOIOCTLCMD;
 434 }
 435
 436 static int ssu100_attach(struct usb_serial *serial)
 437 {
 438         return ssu100_initdevice(serial->dev);
 439 }
 440
 441 static int ssu100_port_probe(struct usb_serial_port *port)
 442 {
 443         struct ssu100_port_private *priv;
 444
 445         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 446         if (!priv)
 447                 return -ENOMEM;
 448
 449         spin_lock_init(&priv->status_lock);
 450         init_waitqueue_head(&priv->delta_msr_wait);
 451
 452         usb_set_serial_port_data(port, priv);
 453
 454         return 0;
 455 }
 456
 457 static int ssu100_port_remove(struct usb_serial_port *port)
 458 {
 459         struct ssu100_port_private *priv;
 460
 461         priv = usb_get_serial_port_data(port);
 462         kfree(priv);
 463
 464         return 0;
 465 }
 466
 467 static int ssu100_tiocmget(struct tty_struct *tty)
 468 {
 469         struct usb_serial_port *port = tty->driver_data;
 470         struct usb_device *dev = port->serial->dev;
 471         u8 *d;
 472         int r;
 473
 474         d = kzalloc(2, GFP_KERNEL);
 475         if (!d)
 476                 return -ENOMEM;
 477
 478         r = ssu100_getregister(dev, 0, UART_MCR, d);
 479         if (r < 0)
 480                 goto mget_out;
 481
 482         r = ssu100_getregister(dev, 0, UART_MSR, d+1);
 483         if (r < 0)
 484                 goto mget_out;
 485
 486         r = (d[0] & UART_MCR_DTR ? TIOCM_DTR : 0) |
 487                 (d[0] & UART_MCR_RTS ? TIOCM_RTS : 0) |
 488                 (d[1] & UART_MSR_CTS ? TIOCM_CTS : 0) |
 489                 (d[1] & UART_MSR_DCD ? TIOCM_CAR : 0) |
 490                 (d[1] & UART_MSR_RI ? TIOCM_RI : 0) |
 491                 (d[1] & UART_MSR_DSR ? TIOCM_DSR : 0);
 492
 493 mget_out:
 494         kfree(d);
 495         return r;
 496 }
 497
 498 static int ssu100_tiocmset(struct tty_struct *tty,
 499                            unsigned int set, unsigned int clear)
 500 {
 501         struct usb_serial_port *port = tty->driver_data;
 502         struct usb_device *dev = port->serial->dev;
 503
 504         return update_mctrl(dev, set, clear);
 505 }
 506
 507 static void ssu100_dtr_rts(struct usb_serial_port *port, int on)
 508 {
 509         struct usb_device *dev = port->serial->dev;
 510
 511         mutex_lock(&port->serial->disc_mutex);
 512         if (!port->serial->disconnected) {
 513                 /* Disable flow control */
 514                 if (!on &&
 515                     ssu100_setregister(dev, 0, UART_MCR, 0) < 0)
 516                         dev_err(&port->dev, "error from flowcontrol urb\n");
 517                 /* drop RTS and DTR */
 518                 if (on)
 519                         set_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
 520                 else
 521                         clear_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
 522         }
 523         mutex_unlock(&port->serial->disc_mutex);
 524 }
 525
 526 static void ssu100_update_msr(struct usb_serial_port *port, u8 msr)
 527 {
 528         struct ssu100_port_private *priv = usb_get_serial_port_data(port);
 529         unsigned long flags;
 530
 531         spin_lock_irqsave(&priv->status_lock, flags);
 532         priv->shadowMSR = msr;
 533         spin_unlock_irqrestore(&priv->status_lock, flags);
 534
 535         if (msr & UART_MSR_ANY_DELTA) {
 536                 /* update input line counters */
 537                 if (msr & UART_MSR_DCTS)
 538                         priv->icount.cts++;
 539                 if (msr & UART_MSR_DDSR)
 540                         priv->icount.dsr++;
 541                 if (msr & UART_MSR_DDCD)
 542                         priv->icount.dcd++;
 543                 if (msr & UART_MSR_TERI)
 544                         priv->icount.rng++;
 545                 wake_up_interruptible(&priv->delta_msr_wait);
 546         }
 547 }
 548
 549 static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr,
 550                               char *tty_flag)
 551 {
 552         struct ssu100_port_private *priv = usb_get_serial_port_data(port);
 553         unsigned long flags;
 554
 555         spin_lock_irqsave(&priv->status_lock, flags);
 556         priv->shadowLSR = lsr;
 557         spin_unlock_irqrestore(&priv->status_lock, flags);
 558
 559         *tty_flag = TTY_NORMAL;
 560         if (lsr & UART_LSR_BRK_ERROR_BITS) {
 561                 /* we always want to update icount, but we only want to
 562                  * update tty_flag for one case */
 563                 if (lsr & UART_LSR_BI) {
 564                         priv->icount.brk++;
 565                         *tty_flag = TTY_BREAK;
 566                         usb_serial_handle_break(port);
 567                 }
 568                 if (lsr & UART_LSR_PE) {
 569                         priv->icount.parity++;
 570                         if (*tty_flag == TTY_NORMAL)
 571                                 *tty_flag = TTY_PARITY;
 572                 }
 573                 if (lsr & UART_LSR_FE) {
 574                         priv->icount.frame++;
 575                         if (*tty_flag == TTY_NORMAL)
 576                                 *tty_flag = TTY_FRAME;
 577                 }
 578                 if (lsr & UART_LSR_OE){
 579                         priv->icount.overrun++;
 580                         if (*tty_flag == TTY_NORMAL)
 581                                 *tty_flag = TTY_OVERRUN;
 582                 }
 583         }
 584
 585 }
 586
 587 static int ssu100_process_packet(struct urb *urb,
 588                                  struct tty_struct *tty)
 589 {
 590         struct usb_serial_port *port = urb->context;
 591         char *packet = (char *)urb->transfer_buffer;
 592         char flag = TTY_NORMAL;
 593         u32 len = urb->actual_length;
 594         int i;
 595         char *ch;
 596
 597         if ((len >= 4) &&
 598             (packet[0] == 0x1b) && (packet[1] == 0x1b) &&
 599             ((packet[2] == 0x00) || (packet[2] == 0x01))) {
 600                 if (packet[2] == 0x00) {
 601                         ssu100_update_lsr(port, packet[3], &flag);
 602                         if (flag == TTY_OVERRUN)
 603                                 tty_insert_flip_char(tty, 0, TTY_OVERRUN);
 604                 }
 605                 if (packet[2] == 0x01)
 606                         ssu100_update_msr(port, packet[3]);
 607
 608                 len -= 4;
 609                 ch = packet + 4;
 610         } else
 611                 ch = packet;
 612
 613         if (!len)
 614                 return 0;       /* status only */
 615
 616         if (port->port.console && port->sysrq) {
 617                 for (i = 0; i < len; i++, ch++) {
 618                         if (!usb_serial_handle_sysrq_char(port, *ch))
 619                                 tty_insert_flip_char(tty, *ch, flag);
 620                 }
 621         } else
 622                 tty_insert_flip_string_fixed_flag(tty, ch, flag, len);
 623
 624         return len;
 625 }
 626
 627 static void ssu100_process_read_urb(struct urb *urb)
 628 {
 629         struct usb_serial_port *port = urb->context;
 630         struct tty_struct *tty;
 631         int count;
 632
 633         tty = tty_port_tty_get(&port->port);
 634         if (!tty)
 635                 return;
 636
 637         count = ssu100_process_packet(urb, tty);
 638
 639         if (count)
 640                 tty_flip_buffer_push(tty);
 641         tty_kref_put(tty);
 642 }
 643
 644 static struct usb_serial_driver ssu100_device = {
 645         .driver = {
 646                 .owner = THIS_MODULE,
 647                 .name = "ssu100",
 648         },
 649         .description         = DRIVER_DESC,
 650         .id_table            = id_table,
 651         .num_ports           = 1,
 652         .open                = ssu100_open,
 653         .close               = ssu100_close,
 654         .attach              = ssu100_attach,
 655         .port_probe          = ssu100_port_probe,
 656         .port_remove         = ssu100_port_remove,
 657         .dtr_rts             = ssu100_dtr_rts,
 658         .process_read_urb    = ssu100_process_read_urb,
 659         .tiocmget            = ssu100_tiocmget,
 660         .tiocmset            = ssu100_tiocmset,
 661         .get_icount          = ssu100_get_icount,
 662         .ioctl               = ssu100_ioctl,
 663         .set_termios         = ssu100_set_termios,
 664         .disconnect          = usb_serial_generic_disconnect,
 665 };
 666
 667 static struct usb_serial_driver * const serial_drivers[] = {
 668         &ssu100_device, NULL
 669 };
 670
 671 module_usb_serial_driver(serial_drivers, id_table);
 672
 673 MODULE_DESCRIPTION(DRIVER_DESC);
 674 MODULE_LICENSE("GPL");