drivers/usb/serial/sierra.c

   1 /*
   2   USB Driver for Sierra Wireless
   3
   4   Copyright (C) 2006  Kevin Lloyd <linux@sierrawireless.com>
   5
   6   IMPORTANT DISCLAIMER: This driver is not commercially supported by
   7   Sierra Wireless. Use at your own risk.
   8
   9   This driver is free software; you can redistribute it and/or modify
  10   it under the terms of Version 2 of the GNU General Public License as
  11   published by the Free Software Foundation.
  12
  13   Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
  14   Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
  15
  16   History:
  17 */
  18
  19 #define DRIVER_VERSION "v.1.0.5"
  20 #define DRIVER_AUTHOR "Kevin Lloyd <linux@sierrawireless.com>"
  21 #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
  22
  23 #include <linux/kernel.h>
  24 #include <linux/jiffies.h>
  25 #include <linux/errno.h>
  26 #include <linux/tty.h>
  27 #include <linux/tty_flip.h>
  28 #include <linux/module.h>
  29 #include <linux/usb.h>
  30 #include <linux/usb/serial.h>
  31
  32
  33 static struct usb_device_id id_table [] = {
  34         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
  35         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
  36         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
  37         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
  38         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
  39         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
  40         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 for Europe */
  41         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 */
  42         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
  43
  44         { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
  45         { USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
  46         { }
  47 };
  48 MODULE_DEVICE_TABLE(usb, id_table);
  49
  50 static struct usb_device_id id_table_1port [] = {
  51         { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
  52         { USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
  53         { }
  54 };
  55
  56 static struct usb_device_id id_table_3port [] = {
  57         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
  58         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
  59         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
  60         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
  61         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
  62         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
  63         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 */
  64         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
  65         { }
  66 };
  67
  68 static struct usb_driver sierra_driver = {
  69         .name       = "sierra",
  70         .probe      = usb_serial_probe,
  71         .disconnect = usb_serial_disconnect,
  72         .id_table   = id_table,
  73         .no_dynamic_id =        1,
  74 };
  75
  76
  77 static int debug;
  78
  79 /* per port private data */
  80 #define N_IN_URB        4
  81 #define N_OUT_URB       1
  82 #define IN_BUFLEN       4096
  83 #define OUT_BUFLEN      128
  84
  85 struct sierra_port_private {
  86         /* Input endpoints and buffer for this port */
  87         struct urb *in_urbs[N_IN_URB];
  88         char in_buffer[N_IN_URB][IN_BUFLEN];
  89         /* Output endpoints and buffer for this port */
  90         struct urb *out_urbs[N_OUT_URB];
  91         char out_buffer[N_OUT_URB][OUT_BUFLEN];
  92
  93         /* Settings for the port */
  94         int rts_state;  /* Handshaking pins (outputs) */
  95         int dtr_state;
  96         int cts_state;  /* Handshaking pins (inputs) */
  97         int dsr_state;
  98         int dcd_state;
  99         int ri_state;
 100
 101         unsigned long tx_start_time[N_OUT_URB];
 102 };
 103
 104 static int sierra_send_setup(struct usb_serial_port *port)
 105 {
 106         struct usb_serial *serial = port->serial;
 107         struct sierra_port_private *portdata;
 108
 109         dbg("%s", __FUNCTION__);
 110
 111         portdata = usb_get_serial_port_data(port);
 112
 113         if (port->tty) {
 114                 int val = 0;
 115                 if (portdata->dtr_state)
 116                         val |= 0x01;
 117                 if (portdata->rts_state)
 118                         val |= 0x02;
 119
 120                 return usb_control_msg(serial->dev,
 121                                 usb_rcvctrlpipe(serial->dev, 0),
 122                                 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
 123         }
 124
 125         return 0;
 126 }
 127
 128 static void sierra_rx_throttle(struct usb_serial_port *port)
 129 {
 130         dbg("%s", __FUNCTION__);
 131 }
 132
 133 static void sierra_rx_unthrottle(struct usb_serial_port *port)
 134 {
 135         dbg("%s", __FUNCTION__);
 136 }
 137
 138 static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
 139 {
 140         /* Unfortunately, I don't know how to send a break */
 141         dbg("%s", __FUNCTION__);
 142 }
 143
 144 static void sierra_set_termios(struct usb_serial_port *port,
 145                         struct termios *old_termios)
 146 {
 147         dbg("%s", __FUNCTION__);
 148
 149         sierra_send_setup(port);
 150 }
 151
 152 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
 153 {
 154         unsigned int value;
 155         struct sierra_port_private *portdata;
 156
 157         portdata = usb_get_serial_port_data(port);
 158
 159         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
 160                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
 161                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
 162                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
 163                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
 164                 ((portdata->ri_state) ? TIOCM_RNG : 0);
 165
 166         return value;
 167 }
 168
 169 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
 170                         unsigned int set, unsigned int clear)
 171 {
 172         struct sierra_port_private *portdata;
 173
 174         portdata = usb_get_serial_port_data(port);
 175
 176         if (set & TIOCM_RTS)
 177                 portdata->rts_state = 1;
 178         if (set & TIOCM_DTR)
 179                 portdata->dtr_state = 1;
 180
 181         if (clear & TIOCM_RTS)
 182                 portdata->rts_state = 0;
 183         if (clear & TIOCM_DTR)
 184                 portdata->dtr_state = 0;
 185         return sierra_send_setup(port);
 186 }
 187
 188 static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
 189                         unsigned int cmd, unsigned long arg)
 190 {
 191         return -ENOIOCTLCMD;
 192 }
 193
 194 /* Write */
 195 static int sierra_write(struct usb_serial_port *port,
 196                         const unsigned char *buf, int count)
 197 {
 198         struct sierra_port_private *portdata;
 199         int i;
 200         int left, todo;
 201         struct urb *this_urb = NULL; /* spurious */
 202         int err;
 203
 204         portdata = usb_get_serial_port_data(port);
 205
 206         dbg("%s: write (%d chars)", __FUNCTION__, count);
 207
 208         i = 0;
 209         left = count;
 210         for (i=0; left > 0 && i < N_OUT_URB; i++) {
 211                 todo = left;
 212                 if (todo > OUT_BUFLEN)
 213                         todo = OUT_BUFLEN;
 214
 215                 this_urb = portdata->out_urbs[i];
 216                 if (this_urb->status == -EINPROGRESS) {
 217                         if (time_before(jiffies,
 218                                         portdata->tx_start_time[i] + 10 * HZ))
 219                                 continue;
 220                         usb_unlink_urb(this_urb);
 221                         continue;
 222                 }
 223                 if (this_urb->status != 0)
 224                         dbg("usb_write %p failed (err=%d)",
 225                                 this_urb, this_urb->status);
 226
 227                 dbg("%s: endpoint %d buf %d", __FUNCTION__,
 228                         usb_pipeendpoint(this_urb->pipe), i);
 229
 230                 /* send the data */
 231                 memcpy (this_urb->transfer_buffer, buf, todo);
 232                 this_urb->transfer_buffer_length = todo;
 233
 234                 this_urb->dev = port->serial->dev;
 235                 err = usb_submit_urb(this_urb, GFP_ATOMIC);
 236                 if (err) {
 237                         dbg("usb_submit_urb %p (write bulk) failed "
 238                                 "(%d, has %d)", this_urb,
 239                                 err, this_urb->status);
 240                         continue;
 241                 }
 242                 portdata->tx_start_time[i] = jiffies;
 243                 buf += todo;
 244                 left -= todo;
 245         }
 246
 247         count -= left;
 248         dbg("%s: wrote (did %d)", __FUNCTION__, count);
 249         return count;
 250 }
 251
 252 static void sierra_indat_callback(struct urb *urb)
 253 {
 254         int err;
 255         int endpoint;
 256         struct usb_serial_port *port;
 257         struct tty_struct *tty;
 258         unsigned char *data = urb->transfer_buffer;
 259
 260         dbg("%s: %p", __FUNCTION__, urb);
 261
 262         endpoint = usb_pipeendpoint(urb->pipe);
 263         port = (struct usb_serial_port *) urb->context;
 264
 265         if (urb->status) {
 266                 dbg("%s: nonzero status: %d on endpoint %02x.",
 267                     __FUNCTION__, urb->status, endpoint);
 268         } else {
 269                 tty = port->tty;
 270                 if (urb->actual_length) {
 271                         tty_buffer_request_room(tty, urb->actual_length);
 272                         tty_insert_flip_string(tty, data, urb->actual_length);
 273                         tty_flip_buffer_push(tty);
 274                 } else {
 275                         dbg("%s: empty read urb received", __FUNCTION__);
 276                 }
 277
 278                 /* Resubmit urb so we continue receiving */
 279                 if (port->open_count && urb->status != -ESHUTDOWN) {
 280                         err = usb_submit_urb(urb, GFP_ATOMIC);
 281                         if (err)
 282                                 printk(KERN_ERR "%s: resubmit read urb failed. "
 283                                         "(%d)", __FUNCTION__, err);
 284                 }
 285         }
 286         return;
 287 }
 288
 289 static void sierra_outdat_callback(struct urb *urb)
 290 {
 291         struct usb_serial_port *port;
 292
 293         dbg("%s", __FUNCTION__);
 294
 295         port = (struct usb_serial_port *) urb->context;
 296
 297         usb_serial_port_softint(port);
 298 }
 299
 300 static void sierra_instat_callback(struct urb *urb)
 301 {
 302         int err;
 303         struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
 304         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 305         struct usb_serial *serial = port->serial;
 306
 307         dbg("%s", __FUNCTION__);
 308         dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
 309
 310         if (urb->status == 0) {
 311                 struct usb_ctrlrequest *req_pkt =
 312                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
 313
 314                 if (!req_pkt) {
 315                         dbg("%s: NULL req_pkt\n", __FUNCTION__);
 316                         return;
 317                 }
 318                 if ((req_pkt->bRequestType == 0xA1) &&
 319                                 (req_pkt->bRequest == 0x20)) {
 320                         int old_dcd_state;
 321                         unsigned char signals = *((unsigned char *)
 322                                         urb->transfer_buffer +
 323                                         sizeof(struct usb_ctrlrequest));
 324
 325                         dbg("%s: signal x%x", __FUNCTION__, signals);
 326
 327                         old_dcd_state = portdata->dcd_state;
 328                         portdata->cts_state = 1;
 329                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
 330                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
 331                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
 332
 333                         if (port->tty && !C_CLOCAL(port->tty) &&
 334                                         old_dcd_state && !portdata->dcd_state)
 335                                 tty_hangup(port->tty);
 336                 } else {
 337                         dbg("%s: type %x req %x", __FUNCTION__,
 338                                 req_pkt->bRequestType,req_pkt->bRequest);
 339                 }
 340         } else
 341                 dbg("%s: error %d", __FUNCTION__, urb->status);
 342
 343         /* Resubmit urb so we continue receiving IRQ data */
 344         if (urb->status != -ESHUTDOWN) {
 345                 urb->dev = serial->dev;
 346                 err = usb_submit_urb(urb, GFP_ATOMIC);
 347                 if (err)
 348                         dbg("%s: resubmit intr urb failed. (%d)",
 349                                 __FUNCTION__, err);
 350         }
 351 }
 352
 353 static int sierra_write_room(struct usb_serial_port *port)
 354 {
 355         struct sierra_port_private *portdata;
 356         int i;
 357         int data_len = 0;
 358         struct urb *this_urb;
 359
 360         portdata = usb_get_serial_port_data(port);
 361
 362         for (i=0; i < N_OUT_URB; i++) {
 363                 this_urb = portdata->out_urbs[i];
 364                 if (this_urb && this_urb->status != -EINPROGRESS)
 365                         data_len += OUT_BUFLEN;
 366         }
 367
 368         dbg("%s: %d", __FUNCTION__, data_len);
 369         return data_len;
 370 }
 371
 372 static int sierra_chars_in_buffer(struct usb_serial_port *port)
 373 {
 374         struct sierra_port_private *portdata;
 375         int i;
 376         int data_len = 0;
 377         struct urb *this_urb;
 378
 379         portdata = usb_get_serial_port_data(port);
 380
 381         for (i=0; i < N_OUT_URB; i++) {
 382                 this_urb = portdata->out_urbs[i];
 383                 if (this_urb && this_urb->status == -EINPROGRESS)
 384                         data_len += this_urb->transfer_buffer_length;
 385         }
 386         dbg("%s: %d", __FUNCTION__, data_len);
 387         return data_len;
 388 }
 389
 390 static int sierra_open(struct usb_serial_port *port, struct file *filp)
 391 {
 392         struct sierra_port_private *portdata;
 393         struct usb_serial *serial = port->serial;
 394         int i, err;
 395         struct urb *urb;
 396
 397         portdata = usb_get_serial_port_data(port);
 398
 399         dbg("%s", __FUNCTION__);
 400
 401         /* Set some sane defaults */
 402         portdata->rts_state = 1;
 403         portdata->dtr_state = 1;
 404
 405         /* Reset low level data toggle and start reading from endpoints */
 406         for (i = 0; i < N_IN_URB; i++) {
 407                 urb = portdata->in_urbs[i];
 408                 if (! urb)
 409                         continue;
 410                 if (urb->dev != serial->dev) {
 411                         dbg("%s: dev %p != %p", __FUNCTION__,
 412                                 urb->dev, serial->dev);
 413                         continue;
 414                 }
 415
 416                 /*
 417                  * make sure endpoint data toggle is synchronized with the
 418                  * device
 419                  */
 420                 usb_clear_halt(urb->dev, urb->pipe);
 421
 422                 err = usb_submit_urb(urb, GFP_KERNEL);
 423                 if (err) {
 424                         dbg("%s: submit urb %d failed (%d) %d",
 425                                 __FUNCTION__, i, err,
 426                                 urb->transfer_buffer_length);
 427                 }
 428         }
 429
 430         /* Reset low level data toggle on out endpoints */
 431         for (i = 0; i < N_OUT_URB; i++) {
 432                 urb = portdata->out_urbs[i];
 433                 if (! urb)
 434                         continue;
 435                 urb->dev = serial->dev;
 436                 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 437                                 usb_pipeout(urb->pipe), 0); */
 438         }
 439
 440         port->tty->low_latency = 1;
 441
 442         sierra_send_setup(port);
 443
 444         return (0);
 445 }
 446
 447 static inline void stop_urb(struct urb *urb)
 448 {
 449         if (urb && urb->status == -EINPROGRESS)
 450                 usb_kill_urb(urb);
 451 }
 452
 453 static void sierra_close(struct usb_serial_port *port, struct file *filp)
 454 {
 455         int i;
 456         struct usb_serial *serial = port->serial;
 457         struct sierra_port_private *portdata;
 458
 459         dbg("%s", __FUNCTION__);
 460         portdata = usb_get_serial_port_data(port);
 461
 462         portdata->rts_state = 0;
 463         portdata->dtr_state = 0;
 464
 465         if (serial->dev) {
 466                 sierra_send_setup(port);
 467
 468                 /* Stop reading/writing urbs */
 469                 for (i = 0; i < N_IN_URB; i++)
 470                         stop_urb(portdata->in_urbs[i]);
 471                 for (i = 0; i < N_OUT_URB; i++)
 472                         stop_urb(portdata->out_urbs[i]);
 473         }
 474         port->tty = NULL;
 475 }
 476
 477 /* Helper functions used by sierra_setup_urbs */
 478 static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
 479                                     int dir, void *ctx, char *buf, int len,
 480                                     usb_complete_t callback)
 481 {
 482         struct urb *urb;
 483
 484         if (endpoint == -1)
 485                 return NULL;            /* endpoint not needed */
 486
 487         urb = usb_alloc_urb(0, GFP_KERNEL);             /* No ISO */
 488         if (urb == NULL) {
 489                 dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint);
 490                 return NULL;
 491         }
 492
 493                 /* Fill URB using supplied data. */
 494         usb_fill_bulk_urb(urb, serial->dev,
 495                       usb_sndbulkpipe(serial->dev, endpoint) | dir,
 496                       buf, len, callback, ctx);
 497
 498         return urb;
 499 }
 500
 501 /* Setup urbs */
 502 static void sierra_setup_urbs(struct usb_serial *serial)
 503 {
 504         int i,j;
 505         struct usb_serial_port *port;
 506         struct sierra_port_private *portdata;
 507
 508         dbg("%s", __FUNCTION__);
 509
 510         for (i = 0; i < serial->num_ports; i++) {
 511                 port = serial->port[i];
 512                 portdata = usb_get_serial_port_data(port);
 513
 514         /* Do indat endpoints first */
 515                 for (j = 0; j < N_IN_URB; ++j) {
 516                         portdata->in_urbs[j] = sierra_setup_urb (serial,
 517                         port->bulk_in_endpointAddress, USB_DIR_IN, port,
 518                         portdata->in_buffer[j], IN_BUFLEN, sierra_indat_callback);
 519                 }
 520
 521                 /* outdat endpoints */
 522                 for (j = 0; j < N_OUT_URB; ++j) {
 523                         portdata->out_urbs[j] = sierra_setup_urb (serial,
 524                         port->bulk_out_endpointAddress, USB_DIR_OUT, port,
 525                         portdata->out_buffer[j], OUT_BUFLEN, sierra_outdat_callback);
 526                 }
 527         }
 528 }
 529
 530 static int sierra_startup(struct usb_serial *serial)
 531 {
 532         int i, err;
 533         struct usb_serial_port *port;
 534         struct sierra_port_private *portdata;
 535
 536         dbg("%s", __FUNCTION__);
 537
 538         /* Now setup per port private data */
 539         for (i = 0; i < serial->num_ports; i++) {
 540                 port = serial->port[i];
 541                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
 542                 if (!portdata) {
 543                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
 544                                         __FUNCTION__, i);
 545                         return (1);
 546                 }
 547
 548                 usb_set_serial_port_data(port, portdata);
 549
 550                 if (! port->interrupt_in_urb)
 551                         continue;
 552                 err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 553                 if (err)
 554                         dbg("%s: submit irq_in urb failed %d",
 555                                 __FUNCTION__, err);
 556         }
 557
 558         sierra_setup_urbs(serial);
 559
 560         return (0);
 561 }
 562
 563 static void sierra_shutdown(struct usb_serial *serial)
 564 {
 565         int i, j;
 566         struct usb_serial_port *port;
 567         struct sierra_port_private *portdata;
 568
 569         dbg("%s", __FUNCTION__);
 570
 571         /* Stop reading/writing urbs */
 572         for (i = 0; i < serial->num_ports; ++i) {
 573                 port = serial->port[i];
 574                 portdata = usb_get_serial_port_data(port);
 575                 for (j = 0; j < N_IN_URB; j++)
 576                         stop_urb(portdata->in_urbs[j]);
 577                 for (j = 0; j < N_OUT_URB; j++)
 578                         stop_urb(portdata->out_urbs[j]);
 579         }
 580
 581         /* Now free them */
 582         for (i = 0; i < serial->num_ports; ++i) {
 583                 port = serial->port[i];
 584                 portdata = usb_get_serial_port_data(port);
 585
 586                 for (j = 0; j < N_IN_URB; j++) {
 587                         if (portdata->in_urbs[j]) {
 588                                 usb_free_urb(portdata->in_urbs[j]);
 589                                 portdata->in_urbs[j] = NULL;
 590                         }
 591                 }
 592                 for (j = 0; j < N_OUT_URB; j++) {
 593                         if (portdata->out_urbs[j]) {
 594                                 usb_free_urb(portdata->out_urbs[j]);
 595                                 portdata->out_urbs[j] = NULL;
 596                         }
 597                 }
 598         }
 599
 600         /* Now free per port private data */
 601         for (i = 0; i < serial->num_ports; i++) {
 602                 port = serial->port[i];
 603                 kfree(usb_get_serial_port_data(port));
 604         }
 605 }
 606
 607 static struct usb_serial_driver sierra_1port_device = {
 608         .driver = {
 609                 .owner =        THIS_MODULE,
 610                 .name =         "sierra1",
 611         },
 612         .description       = "Sierra USB modem (1 port)",
 613         .id_table          = id_table_1port,
 614         .num_interrupt_in  = NUM_DONT_CARE,
 615         .num_bulk_in       = 1,
 616         .num_bulk_out      = 1,
 617         .num_ports         = 1,
 618         .open              = sierra_open,
 619         .close             = sierra_close,
 620         .write             = sierra_write,
 621         .write_room        = sierra_write_room,
 622         .chars_in_buffer   = sierra_chars_in_buffer,
 623         .throttle          = sierra_rx_throttle,
 624         .unthrottle        = sierra_rx_unthrottle,
 625         .ioctl             = sierra_ioctl,
 626         .set_termios       = sierra_set_termios,
 627         .break_ctl         = sierra_break_ctl,
 628         .tiocmget          = sierra_tiocmget,
 629         .tiocmset          = sierra_tiocmset,
 630         .attach            = sierra_startup,
 631         .shutdown          = sierra_shutdown,
 632         .read_int_callback = sierra_instat_callback,
 633 };
 634
 635 static struct usb_serial_driver sierra_3port_device = {
 636         .driver = {
 637                 .owner =        THIS_MODULE,
 638                 .name =         "sierra3",
 639         },
 640         .description       = "Sierra USB modem (3 port)",
 641         .id_table          = id_table_3port,
 642         .num_interrupt_in  = NUM_DONT_CARE,
 643         .num_bulk_in       = 3,
 644         .num_bulk_out      = 3,
 645         .num_ports         = 3,
 646         .open              = sierra_open,
 647         .close             = sierra_close,
 648         .write             = sierra_write,
 649         .write_room        = sierra_write_room,
 650         .chars_in_buffer   = sierra_chars_in_buffer,
 651         .throttle          = sierra_rx_throttle,
 652         .unthrottle        = sierra_rx_unthrottle,
 653         .ioctl             = sierra_ioctl,
 654         .set_termios       = sierra_set_termios,
 655         .break_ctl         = sierra_break_ctl,
 656         .tiocmget          = sierra_tiocmget,
 657         .tiocmset          = sierra_tiocmset,
 658         .attach            = sierra_startup,
 659         .shutdown          = sierra_shutdown,
 660         .read_int_callback = sierra_instat_callback,
 661 };
 662
 663 /* Functions used by new usb-serial code. */
 664 static int __init sierra_init(void)
 665 {
 666         int retval;
 667         retval = usb_serial_register(&sierra_1port_device);
 668         if (retval)
 669                 goto failed_1port_device_register;
 670         retval = usb_serial_register(&sierra_3port_device);
 671         if (retval)
 672                 goto failed_3port_device_register;
 673
 674
 675         retval = usb_register(&sierra_driver);
 676         if (retval)
 677                 goto failed_driver_register;
 678
 679         info(DRIVER_DESC ": " DRIVER_VERSION);
 680
 681         return 0;
 682
 683 failed_driver_register:
 684         usb_serial_deregister(&sierra_3port_device);
 685 failed_3port_device_register:
 686         usb_serial_deregister(&sierra_1port_device);
 687 failed_1port_device_register:
 688         return retval;
 689 }
 690
 691 static void __exit sierra_exit(void)
 692 {
 693         usb_deregister (&sierra_driver);
 694         usb_serial_deregister(&sierra_1port_device);
 695         usb_serial_deregister(&sierra_3port_device);
 696 }
 697
 698 module_init(sierra_init);
 699 module_exit(sierra_exit);
 700
 701 MODULE_AUTHOR(DRIVER_AUTHOR);
 702 MODULE_DESCRIPTION(DRIVER_DESC);
 703 MODULE_VERSION(DRIVER_VERSION);
 704 MODULE_LICENSE("GPL");
 705
 706 #ifdef CONFIG_USB_DEBUG
 707 module_param(debug, bool, S_IRUGO | S_IWUSR);
 708 MODULE_PARM_DESC(debug, "Debug messages");
 709 #endif
 710