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 static bool debug;
  50
  51 /* Version Information */
  52 #define DRIVER_VERSION "v0.1"
  53 #define DRIVER_DESC "Quatech SSU-100 USB to Serial Driver"
  54
  55 #define USB_VENDOR_ID_QUATECH   0x061d  /* Quatech VID */
  56 #define QUATECH_SSU100  0xC020  /* SSU100 */
  57
  58 static const struct usb_device_id id_table[] = {
  59         {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU100)},
  60         {}                      /* Terminating entry */
  61 };
  62
  63 MODULE_DEVICE_TABLE(usb, id_table);
  64
  65
  66 static struct usb_driver ssu100_driver = {
  67         .name                          = "ssu100",
  68         .probe                         = usb_serial_probe,
  69         .disconnect                    = usb_serial_disconnect,
  70         .id_table                      = id_table,
  71         .suspend                       = usb_serial_suspend,
  72         .resume                        = usb_serial_resume,
  73         .supports_autosuspend          = 1,
  74 };
  75
  76 struct ssu100_port_private {
  77         spinlock_t status_lock;
  78         u8 shadowLSR;
  79         u8 shadowMSR;
  80         wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
  81         struct async_icount icount;
  82 };
  83
  84 static void ssu100_release(struct usb_serial *serial)
  85 {
  86         struct ssu100_port_private *priv = usb_get_serial_port_data(*serial->port);
  87
  88         kfree(priv);
  89 }
  90
  91 static inline int ssu100_control_msg(struct usb_device *dev,
  92                                      u8 request, u16 data, u16 index)
  93 {
  94         return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
  95                                request, 0x40, data, index,
  96                                NULL, 0, 300);
  97 }
  98
  99 static inline int ssu100_setdevice(struct usb_device *dev, u8 *data)
 100 {
 101         u16 x = ((u16)(data[1] << 8) | (u16)(data[0]));
 102
 103         return ssu100_control_msg(dev, QT_SET_GET_DEVICE, x, 0);
 104 }
 105
 106
 107 static inline int ssu100_getdevice(struct usb_device *dev, u8 *data)
 108 {
 109         return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 110                                QT_SET_GET_DEVICE, 0xc0, 0, 0,
 111                                data, 3, 300);
 112 }
 113
 114 static inline int ssu100_getregister(struct usb_device *dev,
 115                                      unsigned short uart,
 116                                      unsigned short reg,
 117                                      u8 *data)
 118 {
 119         return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 120                                QT_SET_GET_REGISTER, 0xc0, reg,
 121                                uart, data, sizeof(*data), 300);
 122
 123 }
 124
 125
 126 static inline int ssu100_setregister(struct usb_device *dev,
 127                                      unsigned short uart,
 128                                      unsigned short reg,
 129                                      u16 data)
 130 {
 131         u16 value = (data << 8) | reg;
 132
 133         return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 134                                QT_SET_GET_REGISTER, 0x40, value, uart,
 135                                NULL, 0, 300);
 136
 137 }
 138
 139 #define set_mctrl(dev, set)             update_mctrl((dev), (set), 0)
 140 #define clear_mctrl(dev, clear) update_mctrl((dev), 0, (clear))
 141
 142 /* these do not deal with device that have more than 1 port */
 143 static inline int update_mctrl(struct usb_device *dev, unsigned int set,
 144                                unsigned int clear)
 145 {
 146         unsigned urb_value;
 147         int result;
 148
 149         if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
 150                 dbg("%s - DTR|RTS not being set|cleared", __func__);
 151                 return 0;       /* no change */
 152         }
 153
 154         clear &= ~set;  /* 'set' takes precedence over 'clear' */
 155         urb_value = 0;
 156         if (set & TIOCM_DTR)
 157                 urb_value |= UART_MCR_DTR;
 158         if (set & TIOCM_RTS)
 159                 urb_value |= UART_MCR_RTS;
 160
 161         result = ssu100_setregister(dev, 0, UART_MCR, urb_value);
 162         if (result < 0)
 163                 dbg("%s Error from MODEM_CTRL urb", __func__);
 164
 165         return result;
 166 }
 167
 168 static int ssu100_initdevice(struct usb_device *dev)
 169 {
 170         u8 *data;
 171         int result = 0;
 172
 173         data = kzalloc(3, GFP_KERNEL);
 174         if (!data)
 175                 return -ENOMEM;
 176
 177         result = ssu100_getdevice(dev, data);
 178         if (result < 0) {
 179                 dbg("%s - get_device failed %i", __func__, result);
 180                 goto out;
 181         }
 182
 183         data[1] &= ~FULLPWRBIT;
 184
 185         result = ssu100_setdevice(dev, data);
 186         if (result < 0) {
 187                 dbg("%s - setdevice failed %i", __func__, result);
 188                 goto out;
 189         }
 190
 191         result = ssu100_control_msg(dev, QT_GET_SET_PREBUF_TRIG_LVL, 128, 0);
 192         if (result < 0) {
 193                 dbg("%s - set prebuffer level failed %i", __func__, result);
 194                 goto out;
 195         }
 196
 197         result = ssu100_control_msg(dev, QT_SET_ATF, ATC_DISABLED, 0);
 198         if (result < 0) {
 199                 dbg("%s - set ATFprebuffer level failed %i", __func__, result);
 200                 goto out;
 201         }
 202
 203         result = ssu100_getdevice(dev, data);
 204         if (result < 0) {
 205                 dbg("%s - get_device failed %i", __func__, result);
 206                 goto out;
 207         }
 208
 209         data[0] &= ~(RR_BITS | DUPMODE_BITS);
 210         data[0] |= CLKS_X4;
 211         data[1] &= ~(LOOPMODE_BITS);
 212         data[1] |= RS232_MODE;
 213
 214         result = ssu100_setdevice(dev, data);
 215         if (result < 0) {
 216                 dbg("%s - setdevice failed %i", __func__, result);
 217                 goto out;
 218         }
 219
 220 out:    kfree(data);
 221         return result;
 222
 223 }
 224
 225
 226 static void ssu100_set_termios(struct tty_struct *tty,
 227                                struct usb_serial_port *port,
 228                                struct ktermios *old_termios)
 229 {
 230         struct usb_device *dev = port->serial->dev;
 231         struct ktermios *termios = tty->termios;
 232         u16 baud, divisor, remainder;
 233         unsigned int cflag = termios->c_cflag;
 234         u16 urb_value = 0; /* will hold the new flags */
 235         int result;
 236
 237         if (cflag & PARENB) {
 238                 if (cflag & PARODD)
 239                         urb_value |= UART_LCR_PARITY;
 240                 else
 241                         urb_value |= SERIAL_EVEN_PARITY;
 242         }
 243
 244         switch (cflag & CSIZE) {
 245         case CS5:
 246                 urb_value |= UART_LCR_WLEN5;
 247                 break;
 248         case CS6:
 249                 urb_value |= UART_LCR_WLEN6;
 250                 break;
 251         case CS7:
 252                 urb_value |= UART_LCR_WLEN7;
 253                 break;
 254         default:
 255         case CS8:
 256                 urb_value |= UART_LCR_WLEN8;
 257                 break;
 258         }
 259
 260         baud = tty_get_baud_rate(tty);
 261         if (!baud)
 262                 baud = 9600;
 263
 264         dbg("%s - got baud = %d\n", __func__, baud);
 265
 266
 267         divisor = MAX_BAUD_RATE / baud;
 268         remainder = MAX_BAUD_RATE % baud;
 269         if (((remainder * 2) >= baud) && (baud != 110))
 270                 divisor++;
 271
 272         urb_value = urb_value << 8;
 273
 274         result = ssu100_control_msg(dev, QT_GET_SET_UART, divisor, urb_value);
 275         if (result < 0)
 276                 dbg("%s - set uart failed", __func__);
 277
 278         if (cflag & CRTSCTS)
 279                 result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
 280                                             SERIAL_CRTSCTS, 0);
 281         else
 282                 result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
 283                                             0, 0);
 284         if (result < 0)
 285                 dbg("%s - set HW flow control failed", __func__);
 286
 287         if (I_IXOFF(tty) || I_IXON(tty)) {
 288                 u16 x = ((u16)(START_CHAR(tty) << 8) | (u16)(STOP_CHAR(tty)));
 289
 290                 result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
 291                                             x, 0);
 292         } else
 293                 result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
 294                                             0, 0);
 295
 296         if (result < 0)
 297                 dbg("%s - set SW flow control failed", __func__);
 298
 299 }
 300
 301
 302 static int ssu100_open(struct tty_struct *tty, struct usb_serial_port *port)
 303 {
 304         struct usb_device *dev = port->serial->dev;
 305         struct ssu100_port_private *priv = usb_get_serial_port_data(port);
 306         u8 *data;
 307         int result;
 308         unsigned long flags;
 309
 310         data = kzalloc(2, GFP_KERNEL);
 311         if (!data)
 312                 return -ENOMEM;
 313
 314         result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 315                                  QT_OPEN_CLOSE_CHANNEL,
 316                                  QT_TRANSFER_IN, 0x01,
 317                                  0, data, 2, 300);
 318         if (result < 0) {
 319                 dbg("%s - open failed %i", __func__, result);
 320                 kfree(data);
 321                 return result;
 322         }
 323
 324         spin_lock_irqsave(&priv->status_lock, flags);
 325         priv->shadowLSR = data[0];
 326         priv->shadowMSR = data[1];
 327         spin_unlock_irqrestore(&priv->status_lock, flags);
 328
 329         kfree(data);
 330
 331 /* set to 9600 */
 332         result = ssu100_control_msg(dev, QT_GET_SET_UART, 0x30, 0x0300);
 333         if (result < 0)
 334                 dbg("%s - set uart failed", __func__);
 335
 336         if (tty)
 337                 ssu100_set_termios(tty, port, tty->termios);
 338
 339         return usb_serial_generic_open(tty, port);
 340 }
 341
 342 static void ssu100_close(struct usb_serial_port *port)
 343 {
 344         usb_serial_generic_close(port);
 345 }
 346
 347 static int get_serial_info(struct usb_serial_port *port,
 348                            struct serial_struct __user *retinfo)
 349 {
 350         struct serial_struct tmp;
 351
 352         if (!retinfo)
 353                 return -EFAULT;
 354
 355         memset(&tmp, 0, sizeof(tmp));
 356         tmp.line                = port->serial->minor;
 357         tmp.port                = 0;
 358         tmp.irq                 = 0;
 359         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
 360         tmp.xmit_fifo_size      = port->bulk_out_size;
 361         tmp.baud_base           = 9600;
 362         tmp.close_delay         = 5*HZ;
 363         tmp.closing_wait        = 30*HZ;
 364
 365         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
 366                 return -EFAULT;
 367         return 0;
 368 }
 369
 370 static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
 371 {
 372         struct ssu100_port_private *priv = usb_get_serial_port_data(port);
 373         struct async_icount prev, cur;
 374         unsigned long flags;
 375
 376         spin_lock_irqsave(&priv->status_lock, flags);
 377         prev = priv->icount;
 378         spin_unlock_irqrestore(&priv->status_lock, flags);
 379
 380         while (1) {
 381                 wait_event_interruptible(priv->delta_msr_wait,
 382                                          ((priv->icount.rng != prev.rng) ||
 383                                           (priv->icount.dsr != prev.dsr) ||
 384                                           (priv->icount.dcd != prev.dcd) ||
 385                                           (priv->icount.cts != prev.cts)));
 386
 387                 if (signal_pending(current))
 388                         return -ERESTARTSYS;
 389
 390                 spin_lock_irqsave(&priv->status_lock, flags);
 391                 cur = priv->icount;
 392                 spin_unlock_irqrestore(&priv->status_lock, flags);
 393
 394                 if ((prev.rng == cur.rng) &&
 395                     (prev.dsr == cur.dsr) &&
 396                     (prev.dcd == cur.dcd) &&
 397                     (prev.cts == cur.cts))
 398                         return -EIO;
 399
 400                 if ((arg & TIOCM_RNG && (prev.rng != cur.rng)) ||
 401                     (arg & TIOCM_DSR && (prev.dsr != cur.dsr)) ||
 402                     (arg & TIOCM_CD  && (prev.dcd != cur.dcd)) ||
 403                     (arg & TIOCM_CTS && (prev.cts != cur.cts)))
 404                         return 0;
 405         }
 406         return 0;
 407 }
 408
 409 static int ssu100_get_icount(struct tty_struct *tty,
 410                         struct serial_icounter_struct *icount)
 411 {
 412         struct usb_serial_port *port = tty->driver_data;
 413         struct ssu100_port_private *priv = usb_get_serial_port_data(port);
 414         struct async_icount cnow = priv->icount;
 415
 416         icount->cts = cnow.cts;
 417         icount->dsr = cnow.dsr;
 418         icount->rng = cnow.rng;
 419         icount->dcd = cnow.dcd;
 420         icount->rx = cnow.rx;
 421         icount->tx = cnow.tx;
 422         icount->frame = cnow.frame;
 423         icount->overrun = cnow.overrun;
 424         icount->parity = cnow.parity;
 425         icount->brk = cnow.brk;
 426         icount->buf_overrun = cnow.buf_overrun;
 427
 428         return 0;
 429 }
 430
 431
 432
 433 static int ssu100_ioctl(struct tty_struct *tty,
 434                     unsigned int cmd, unsigned long arg)
 435 {
 436         struct usb_serial_port *port = tty->driver_data;
 437
 438         dbg("%s cmd 0x%04x", __func__, cmd);
 439
 440         switch (cmd) {
 441         case TIOCGSERIAL:
 442                 return get_serial_info(port,
 443                                        (struct serial_struct __user *) arg);
 444
 445         case TIOCMIWAIT:
 446                 return wait_modem_info(port, arg);
 447
 448         default:
 449                 break;
 450         }
 451
 452         dbg("%s arg not supported", __func__);
 453
 454         return -ENOIOCTLCMD;
 455 }
 456
 457 static int ssu100_attach(struct usb_serial *serial)
 458 {
 459         struct ssu100_port_private *priv;
 460         struct usb_serial_port *port = *serial->port;
 461
 462         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 463         if (!priv) {
 464                 dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__,
 465                         sizeof(*priv));
 466                 return -ENOMEM;
 467         }
 468
 469         spin_lock_init(&priv->status_lock);
 470         init_waitqueue_head(&priv->delta_msr_wait);
 471         usb_set_serial_port_data(port, priv);
 472
 473         return ssu100_initdevice(serial->dev);
 474 }
 475
 476 static int ssu100_tiocmget(struct tty_struct *tty)
 477 {
 478         struct usb_serial_port *port = tty->driver_data;
 479         struct usb_device *dev = port->serial->dev;
 480         u8 *d;
 481         int r;
 482
 483         d = kzalloc(2, GFP_KERNEL);
 484         if (!d)
 485                 return -ENOMEM;
 486
 487         r = ssu100_getregister(dev, 0, UART_MCR, d);
 488         if (r < 0)
 489                 goto mget_out;
 490
 491         r = ssu100_getregister(dev, 0, UART_MSR, d+1);
 492         if (r < 0)
 493                 goto mget_out;
 494
 495         r = (d[0] & UART_MCR_DTR ? TIOCM_DTR : 0) |
 496                 (d[0] & UART_MCR_RTS ? TIOCM_RTS : 0) |
 497                 (d[1] & UART_MSR_CTS ? TIOCM_CTS : 0) |
 498                 (d[1] & UART_MSR_DCD ? TIOCM_CAR : 0) |
 499                 (d[1] & UART_MSR_RI ? TIOCM_RI : 0) |
 500                 (d[1] & UART_MSR_DSR ? TIOCM_DSR : 0);
 501
 502 mget_out:
 503         kfree(d);
 504         return r;
 505 }
 506
 507 static int ssu100_tiocmset(struct tty_struct *tty,
 508                            unsigned int set, unsigned int clear)
 509 {
 510         struct usb_serial_port *port = tty->driver_data;
 511         struct usb_device *dev = port->serial->dev;
 512
 513         return update_mctrl(dev, set, clear);
 514 }
 515
 516 static void ssu100_dtr_rts(struct usb_serial_port *port, int on)
 517 {
 518         struct usb_device *dev = port->serial->dev;
 519
 520         mutex_lock(&port->serial->disc_mutex);
 521         if (!port->serial->disconnected) {
 522                 /* Disable flow control */
 523                 if (!on &&
 524                     ssu100_setregister(dev, 0, UART_MCR, 0) < 0)
 525                         dev_err(&port->dev, "error from flowcontrol urb\n");
 526                 /* drop RTS and DTR */
 527                 if (on)
 528                         set_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
 529                 else
 530                         clear_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
 531         }
 532         mutex_unlock(&port->serial->disc_mutex);
 533 }
 534
 535 static void ssu100_update_msr(struct usb_serial_port *port, u8 msr)
 536 {
 537         struct ssu100_port_private *priv = usb_get_serial_port_data(port);
 538         unsigned long flags;
 539
 540         spin_lock_irqsave(&priv->status_lock, flags);
 541         priv->shadowMSR = msr;
 542         spin_unlock_irqrestore(&priv->status_lock, flags);
 543
 544         if (msr & UART_MSR_ANY_DELTA) {
 545                 /* update input line counters */
 546                 if (msr & UART_MSR_DCTS)
 547                         priv->icount.cts++;
 548                 if (msr & UART_MSR_DDSR)
 549                         priv->icount.dsr++;
 550                 if (msr & UART_MSR_DDCD)
 551                         priv->icount.dcd++;
 552                 if (msr & UART_MSR_TERI)
 553                         priv->icount.rng++;
 554                 wake_up_interruptible(&priv->delta_msr_wait);
 555         }
 556 }
 557
 558 static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr,
 559                               char *tty_flag)
 560 {
 561         struct ssu100_port_private *priv = usb_get_serial_port_data(port);
 562         unsigned long flags;
 563
 564         spin_lock_irqsave(&priv->status_lock, flags);
 565         priv->shadowLSR = lsr;
 566         spin_unlock_irqrestore(&priv->status_lock, flags);
 567
 568         *tty_flag = TTY_NORMAL;
 569         if (lsr & UART_LSR_BRK_ERROR_BITS) {
 570                 /* we always want to update icount, but we only want to
 571                  * update tty_flag for one case */
 572                 if (lsr & UART_LSR_BI) {
 573                         priv->icount.brk++;
 574                         *tty_flag = TTY_BREAK;
 575                         usb_serial_handle_break(port);
 576                 }
 577                 if (lsr & UART_LSR_PE) {
 578                         priv->icount.parity++;
 579                         if (*tty_flag == TTY_NORMAL)
 580                                 *tty_flag = TTY_PARITY;
 581                 }
 582                 if (lsr & UART_LSR_FE) {
 583                         priv->icount.frame++;
 584                         if (*tty_flag == TTY_NORMAL)
 585                                 *tty_flag = TTY_FRAME;
 586                 }
 587                 if (lsr & UART_LSR_OE){
 588                         priv->icount.overrun++;
 589                         if (*tty_flag == TTY_NORMAL)
 590                                 *tty_flag = TTY_OVERRUN;
 591                 }
 592         }
 593
 594 }
 595
 596 static int ssu100_process_packet(struct urb *urb,
 597                                  struct tty_struct *tty)
 598 {
 599         struct usb_serial_port *port = urb->context;
 600         char *packet = (char *)urb->transfer_buffer;
 601         char flag = TTY_NORMAL;
 602         u32 len = urb->actual_length;
 603         int i;
 604         char *ch;
 605
 606         if ((len >= 4) &&
 607             (packet[0] == 0x1b) && (packet[1] == 0x1b) &&
 608             ((packet[2] == 0x00) || (packet[2] == 0x01))) {
 609                 if (packet[2] == 0x00) {
 610                         ssu100_update_lsr(port, packet[3], &flag);
 611                         if (flag == TTY_OVERRUN)
 612                                 tty_insert_flip_char(tty, 0, TTY_OVERRUN);
 613                 }
 614                 if (packet[2] == 0x01)
 615                         ssu100_update_msr(port, packet[3]);
 616
 617                 len -= 4;
 618                 ch = packet + 4;
 619         } else
 620                 ch = packet;
 621
 622         if (!len)
 623                 return 0;       /* status only */
 624
 625         if (port->port.console && port->sysrq) {
 626                 for (i = 0; i < len; i++, ch++) {
 627                         if (!usb_serial_handle_sysrq_char(port, *ch))
 628                                 tty_insert_flip_char(tty, *ch, flag);
 629                 }
 630         } else
 631                 tty_insert_flip_string_fixed_flag(tty, ch, flag, len);
 632
 633         return len;
 634 }
 635
 636 static void ssu100_process_read_urb(struct urb *urb)
 637 {
 638         struct usb_serial_port *port = urb->context;
 639         struct tty_struct *tty;
 640         int count;
 641
 642         tty = tty_port_tty_get(&port->port);
 643         if (!tty)
 644                 return;
 645
 646         count = ssu100_process_packet(urb, tty);
 647
 648         if (count)
 649                 tty_flip_buffer_push(tty);
 650         tty_kref_put(tty);
 651 }
 652
 653 static struct usb_serial_driver ssu100_device = {
 654         .driver = {
 655                 .owner = THIS_MODULE,
 656                 .name = "ssu100",
 657         },
 658         .description         = DRIVER_DESC,
 659         .id_table            = id_table,
 660         .num_ports           = 1,
 661         .open                = ssu100_open,
 662         .close               = ssu100_close,
 663         .attach              = ssu100_attach,
 664         .release             = ssu100_release,
 665         .dtr_rts             = ssu100_dtr_rts,
 666         .process_read_urb    = ssu100_process_read_urb,
 667         .tiocmget            = ssu100_tiocmget,
 668         .tiocmset            = ssu100_tiocmset,
 669         .get_icount          = ssu100_get_icount,
 670         .ioctl               = ssu100_ioctl,
 671         .set_termios         = ssu100_set_termios,
 672         .disconnect          = usb_serial_generic_disconnect,
 673 };
 674
 675 static struct usb_serial_driver * const serial_drivers[] = {
 676         &ssu100_device, NULL
 677 };
 678
 679 module_usb_serial_driver(ssu100_driver, serial_drivers);
 680
 681 MODULE_DESCRIPTION(DRIVER_DESC);
 682 MODULE_LICENSE("GPL");
 683
 684 module_param(debug, bool, S_IRUGO | S_IWUSR);
 685 MODULE_PARM_DESC(debug, "Debug enabled or not");