drivers/usb/serial/sierra.c

   1 /*
   2   USB Driver for Sierra Wireless
   3
   4   Copyright (C) 2006, 2007  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
  17 #define DRIVER_VERSION "v.1.2.5b"
  18 #define DRIVER_AUTHOR "Kevin Lloyd <linux@sierrawireless.com>"
  19 #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
  20
  21 #include <linux/kernel.h>
  22 #include <linux/jiffies.h>
  23 #include <linux/errno.h>
  24 #include <linux/tty.h>
  25 #include <linux/tty_flip.h>
  26 #include <linux/module.h>
  27 #include <linux/usb.h>
  28 #include <linux/usb/serial.h>
  29
  30 #define SWIMS_USB_REQUEST_SetMode       0x0B
  31 #define SWIMS_USB_REQUEST_TYPE_SetMode  0x40
  32 #define SWIMS_USB_INDEX_SetMode         0x0000
  33 #define SWIMS_SET_MODE_Modem            0x0001
  34
  35 /* per port private data */
  36 #define N_IN_URB        4
  37 #define N_OUT_URB       4
  38 #define IN_BUFLEN       4096
  39
  40 static int debug;
  41
  42 enum devicetype {
  43         DEVICE_3_PORT =         0,
  44         DEVICE_1_PORT =         1,
  45         DEVICE_INSTALLER =      2,
  46 };
  47
  48 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
  49 {
  50         int result;
  51         dev_dbg(&udev->dev, "%s", "SET POWER STATE\n");
  52         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  53                         0x00,                   /* __u8 request      */
  54                         0x40,                   /* __u8 request type */
  55                         swiState,               /* __u16 value       */
  56                         0,                      /* __u16 index       */
  57                         NULL,                   /* void *data        */
  58                         0,                      /* __u16 size        */
  59                         USB_CTRL_SET_TIMEOUT);  /* int timeout       */
  60         return result;
  61 }
  62
  63 static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSocMode)
  64 {
  65         int result;
  66         dev_dbg(&udev->dev, "%s", "DEVICE MODE SWITCH\n");
  67         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  68                         SWIMS_USB_REQUEST_SetMode,      /* __u8 request      */
  69                         SWIMS_USB_REQUEST_TYPE_SetMode, /* __u8 request type */
  70                         eSocMode,                       /* __u16 value       */
  71                         SWIMS_USB_INDEX_SetMode,        /* __u16 index       */
  72                         NULL,                           /* void *data        */
  73                         0,                              /* __u16 size        */
  74                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
  75         return result;
  76 }
  77
  78 static int sierra_probe(struct usb_interface *iface,
  79                         const struct usb_device_id *id)
  80 {
  81         int result;
  82         struct usb_device *udev;
  83
  84         udev = usb_get_dev(interface_to_usbdev(iface));
  85
  86         /* Check if in installer mode */
  87         if (id->driver_info == DEVICE_INSTALLER) {
  88                 dev_dbg(&udev->dev, "%s", "FOUND DEVICE(SW)\n");
  89                 result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
  90                 /*We do not want to bind to the device when in installer mode*/
  91                 return -EIO;
  92         }
  93
  94         return usb_serial_probe(iface, id);
  95 }
  96
  97 static struct usb_device_id id_table [] = {
  98         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
  99         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
 100         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
 101         { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
 102         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
 103         { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
 104         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
 105         { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
 106         { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
 107
 108         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
 109         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
 110         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
 111         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
 112         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 113         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
 114         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
 115         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
 116         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
 117         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
 118         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
 119
 120         { USB_DEVICE(0x1199, 0x0112), .driver_info = DEVICE_1_PORT }, /* Sierra Wireless AirCard 580 */
 121         { USB_DEVICE(0x0F3D, 0x0112), .driver_info = DEVICE_1_PORT }, /* Airprime/Sierra PC 5220 */
 122
 123         { USB_DEVICE(0x1199, 0x0FFF), .driver_info = DEVICE_INSTALLER},
 124         { }
 125 };
 126 MODULE_DEVICE_TABLE(usb, id_table);
 127
 128 static struct usb_device_id id_table_1port [] = {
 129         { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
 130         { USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
 131         { }
 132 };
 133
 134 static struct usb_device_id id_table_3port [] = {
 135         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
 136         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
 137         { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
 138         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
 139         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
 140         { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
 141         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
 142         { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
 143         { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U*/
 144
 145         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
 146         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
 147         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
 148         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
 149         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 150         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
 151         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
 152         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
 153         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
 154         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880E */
 155         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881E */
 156         { }
 157 };
 158
 159 static struct usb_driver sierra_driver = {
 160         .name       = "sierra",
 161         .probe      = sierra_probe,
 162         .disconnect = usb_serial_disconnect,
 163         .id_table   = id_table,
 164         .no_dynamic_id =        1,
 165 };
 166
 167
 168 struct sierra_port_private {
 169         spinlock_t lock;        /* lock the structure */
 170         int outstanding_urbs;   /* number of out urbs in flight */
 171
 172         /* Input endpoints and buffer for this port */
 173         struct urb *in_urbs[N_IN_URB];
 174         char in_buffer[N_IN_URB][IN_BUFLEN];
 175
 176         /* Settings for the port */
 177         int rts_state;  /* Handshaking pins (outputs) */
 178         int dtr_state;
 179         int cts_state;  /* Handshaking pins (inputs) */
 180         int dsr_state;
 181         int dcd_state;
 182         int ri_state;
 183 };
 184
 185 static int sierra_send_setup(struct usb_serial_port *port)
 186 {
 187         struct usb_serial *serial = port->serial;
 188         struct sierra_port_private *portdata;
 189
 190         dbg("%s", __FUNCTION__);
 191
 192         portdata = usb_get_serial_port_data(port);
 193
 194         if (port->tty) {
 195                 int val = 0;
 196                 if (portdata->dtr_state)
 197                         val |= 0x01;
 198                 if (portdata->rts_state)
 199                         val |= 0x02;
 200
 201                 return usb_control_msg(serial->dev,
 202                                 usb_rcvctrlpipe(serial->dev, 0),
 203                                 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
 204         }
 205
 206         return 0;
 207 }
 208
 209 static void sierra_rx_throttle(struct usb_serial_port *port)
 210 {
 211         dbg("%s", __FUNCTION__);
 212 }
 213
 214 static void sierra_rx_unthrottle(struct usb_serial_port *port)
 215 {
 216         dbg("%s", __FUNCTION__);
 217 }
 218
 219 static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
 220 {
 221         /* Unfortunately, I don't know how to send a break */
 222         dbg("%s", __FUNCTION__);
 223 }
 224
 225 static void sierra_set_termios(struct usb_serial_port *port,
 226                         struct ktermios *old_termios)
 227 {
 228         dbg("%s", __FUNCTION__);
 229         tty_termios_copy_hw(port->tty->termios, old_termios);
 230         sierra_send_setup(port);
 231 }
 232
 233 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
 234 {
 235         unsigned int value;
 236         struct sierra_port_private *portdata;
 237
 238         portdata = usb_get_serial_port_data(port);
 239
 240         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
 241                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
 242                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
 243                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
 244                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
 245                 ((portdata->ri_state) ? TIOCM_RNG : 0);
 246
 247         return value;
 248 }
 249
 250 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
 251                         unsigned int set, unsigned int clear)
 252 {
 253         struct sierra_port_private *portdata;
 254
 255         portdata = usb_get_serial_port_data(port);
 256
 257         if (set & TIOCM_RTS)
 258                 portdata->rts_state = 1;
 259         if (set & TIOCM_DTR)
 260                 portdata->dtr_state = 1;
 261
 262         if (clear & TIOCM_RTS)
 263                 portdata->rts_state = 0;
 264         if (clear & TIOCM_DTR)
 265                 portdata->dtr_state = 0;
 266         return sierra_send_setup(port);
 267 }
 268
 269 static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
 270                         unsigned int cmd, unsigned long arg)
 271 {
 272         return -ENOIOCTLCMD;
 273 }
 274
 275 static void sierra_outdat_callback(struct urb *urb)
 276 {
 277         struct usb_serial_port *port = urb->context;
 278         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 279         int status = urb->status;
 280         unsigned long flags;
 281
 282         dbg("%s - port %d", __FUNCTION__, port->number);
 283
 284         /* free up the transfer buffer, as usb_free_urb() does not do this */
 285         kfree(urb->transfer_buffer);
 286
 287         if (status)
 288                 dbg("%s - nonzero write bulk status received: %d",
 289                     __FUNCTION__, status);
 290
 291         spin_lock_irqsave(&portdata->lock, flags);
 292         --portdata->outstanding_urbs;
 293         spin_unlock_irqrestore(&portdata->lock, flags);
 294
 295         usb_serial_port_softint(port);
 296 }
 297
 298 /* Write */
 299 static int sierra_write(struct usb_serial_port *port,
 300                         const unsigned char *buf, int count)
 301 {
 302         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 303         struct usb_serial *serial = port->serial;
 304         unsigned long flags;
 305         unsigned char *buffer;
 306         struct urb *urb;
 307         int status;
 308
 309         portdata = usb_get_serial_port_data(port);
 310
 311         dbg("%s: write (%d chars)", __FUNCTION__, count);
 312
 313         spin_lock_irqsave(&portdata->lock, flags);
 314         if (portdata->outstanding_urbs > N_OUT_URB) {
 315                 spin_unlock_irqrestore(&portdata->lock, flags);
 316                 dbg("%s - write limit hit\n", __FUNCTION__);
 317                 return 0;
 318         }
 319         portdata->outstanding_urbs++;
 320         spin_unlock_irqrestore(&portdata->lock, flags);
 321
 322         buffer = kmalloc(count, GFP_ATOMIC);
 323         if (!buffer) {
 324                 dev_err(&port->dev, "out of memory\n");
 325                 count = -ENOMEM;
 326                 goto error_no_buffer;
 327         }
 328
 329         urb = usb_alloc_urb(0, GFP_ATOMIC);
 330         if (!urb) {
 331                 dev_err(&port->dev, "no more free urbs\n");
 332                 count = -ENOMEM;
 333                 goto error_no_urb;
 334         }
 335
 336         memcpy(buffer, buf, count);
 337
 338         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
 339
 340         usb_fill_bulk_urb(urb, serial->dev,
 341                           usb_sndbulkpipe(serial->dev,
 342                                           port->bulk_out_endpointAddress),
 343                           buffer, count, sierra_outdat_callback, port);
 344
 345         /* send it down the pipe */
 346         status = usb_submit_urb(urb, GFP_ATOMIC);
 347         if (status) {
 348                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
 349                         "with status = %d\n", __FUNCTION__, status);
 350                 count = status;
 351                 goto error;
 352         }
 353
 354         /* we are done with this urb, so let the host driver
 355          * really free it when it is finished with it */
 356         usb_free_urb(urb);
 357
 358         return count;
 359 error:
 360         usb_free_urb(urb);
 361 error_no_urb:
 362         kfree(buffer);
 363 error_no_buffer:
 364         spin_lock_irqsave(&portdata->lock, flags);
 365         --portdata->outstanding_urbs;
 366         spin_unlock_irqrestore(&portdata->lock, flags);
 367         return count;
 368 }
 369
 370 static void sierra_indat_callback(struct urb *urb)
 371 {
 372         int err;
 373         int endpoint;
 374         struct usb_serial_port *port;
 375         struct tty_struct *tty;
 376         unsigned char *data = urb->transfer_buffer;
 377         int status = urb->status;
 378
 379         dbg("%s: %p", __FUNCTION__, urb);
 380
 381         endpoint = usb_pipeendpoint(urb->pipe);
 382         port = (struct usb_serial_port *) urb->context;
 383
 384         if (status) {
 385                 dbg("%s: nonzero status: %d on endpoint %02x.",
 386                     __FUNCTION__, status, endpoint);
 387         } else {
 388                 tty = port->tty;
 389                 if (urb->actual_length) {
 390                         tty_buffer_request_room(tty, urb->actual_length);
 391                         tty_insert_flip_string(tty, data, urb->actual_length);
 392                         tty_flip_buffer_push(tty);
 393                 } else {
 394                         dbg("%s: empty read urb received", __FUNCTION__);
 395                 }
 396
 397                 /* Resubmit urb so we continue receiving */
 398                 if (port->open_count && status != -ESHUTDOWN) {
 399                         err = usb_submit_urb(urb, GFP_ATOMIC);
 400                         if (err)
 401                                 dev_err(&port->dev, "resubmit read urb failed."
 402                                         "(%d)\n", err);
 403                 }
 404         }
 405         return;
 406 }
 407
 408 static void sierra_instat_callback(struct urb *urb)
 409 {
 410         int err;
 411         int status = urb->status;
 412         struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
 413         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 414         struct usb_serial *serial = port->serial;
 415
 416         dbg("%s", __FUNCTION__);
 417         dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
 418
 419         if (status == 0) {
 420                 struct usb_ctrlrequest *req_pkt =
 421                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
 422
 423                 if (!req_pkt) {
 424                         dbg("%s: NULL req_pkt\n", __FUNCTION__);
 425                         return;
 426                 }
 427                 if ((req_pkt->bRequestType == 0xA1) &&
 428                                 (req_pkt->bRequest == 0x20)) {
 429                         int old_dcd_state;
 430                         unsigned char signals = *((unsigned char *)
 431                                         urb->transfer_buffer +
 432                                         sizeof(struct usb_ctrlrequest));
 433
 434                         dbg("%s: signal x%x", __FUNCTION__, signals);
 435
 436                         old_dcd_state = portdata->dcd_state;
 437                         portdata->cts_state = 1;
 438                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
 439                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
 440                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
 441
 442                         if (port->tty && !C_CLOCAL(port->tty) &&
 443                                         old_dcd_state && !portdata->dcd_state)
 444                                 tty_hangup(port->tty);
 445                 } else {
 446                         dbg("%s: type %x req %x", __FUNCTION__,
 447                                 req_pkt->bRequestType,req_pkt->bRequest);
 448                 }
 449         } else
 450                 dbg("%s: error %d", __FUNCTION__, status);
 451
 452         /* Resubmit urb so we continue receiving IRQ data */
 453         if (status != -ESHUTDOWN) {
 454                 urb->dev = serial->dev;
 455                 err = usb_submit_urb(urb, GFP_ATOMIC);
 456                 if (err)
 457                         dbg("%s: resubmit intr urb failed. (%d)",
 458                                 __FUNCTION__, err);
 459         }
 460 }
 461
 462 static int sierra_write_room(struct usb_serial_port *port)
 463 {
 464         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 465         unsigned long flags;
 466
 467         dbg("%s - port %d", __FUNCTION__, port->number);
 468
 469         /* try to give a good number back based on if we have any free urbs at
 470          * this point in time */
 471         spin_lock_irqsave(&portdata->lock, flags);
 472         if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
 473                 spin_unlock_irqrestore(&portdata->lock, flags);
 474                 dbg("%s - write limit hit\n", __FUNCTION__);
 475                 return 0;
 476         }
 477         spin_unlock_irqrestore(&portdata->lock, flags);
 478
 479         return 2048;
 480 }
 481
 482 static int sierra_chars_in_buffer(struct usb_serial_port *port)
 483 {
 484         dbg("%s - port %d", __FUNCTION__, port->number);
 485
 486         /*
 487          * We can't really account for how much data we
 488          * have sent out, but hasn't made it through to the
 489          * device as we can't see the backend here, so just
 490          * tell the tty layer that everything is flushed.
 491          */
 492         return 0;
 493 }
 494
 495 static int sierra_open(struct usb_serial_port *port, struct file *filp)
 496 {
 497         struct sierra_port_private *portdata;
 498         struct usb_serial *serial = port->serial;
 499         int i;
 500         struct urb *urb;
 501         int result;
 502
 503         portdata = usb_get_serial_port_data(port);
 504
 505         dbg("%s", __FUNCTION__);
 506
 507         /* Set some sane defaults */
 508         portdata->rts_state = 1;
 509         portdata->dtr_state = 1;
 510
 511         /* Reset low level data toggle and start reading from endpoints */
 512         for (i = 0; i < N_IN_URB; i++) {
 513                 urb = portdata->in_urbs[i];
 514                 if (!urb)
 515                         continue;
 516                 if (urb->dev != serial->dev) {
 517                         dbg("%s: dev %p != %p", __FUNCTION__,
 518                                 urb->dev, serial->dev);
 519                         continue;
 520                 }
 521
 522                 /*
 523                  * make sure endpoint data toggle is synchronized with the
 524                  * device
 525                  */
 526                 usb_clear_halt(urb->dev, urb->pipe);
 527
 528                 result = usb_submit_urb(urb, GFP_KERNEL);
 529                 if (result) {
 530                         dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
 531                                 i, result, urb->transfer_buffer_length);
 532                 }
 533         }
 534
 535         port->tty->low_latency = 1;
 536
 537         sierra_send_setup(port);
 538
 539         /* start up the interrupt endpoint if we have one */
 540         if (port->interrupt_in_urb) {
 541                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 542                 if (result)
 543                         dev_err(&port->dev, "submit irq_in urb failed %d\n",
 544                                 result);
 545         }
 546         return 0;
 547 }
 548
 549 static void sierra_close(struct usb_serial_port *port, struct file *filp)
 550 {
 551         int i;
 552         struct usb_serial *serial = port->serial;
 553         struct sierra_port_private *portdata;
 554
 555         dbg("%s", __FUNCTION__);
 556         portdata = usb_get_serial_port_data(port);
 557
 558         portdata->rts_state = 0;
 559         portdata->dtr_state = 0;
 560
 561         if (serial->dev) {
 562                 sierra_send_setup(port);
 563
 564                 /* Stop reading/writing urbs */
 565                 for (i = 0; i < N_IN_URB; i++)
 566                         usb_kill_urb(portdata->in_urbs[i]);
 567         }
 568
 569         usb_kill_urb(port->interrupt_in_urb);
 570
 571         port->tty = NULL;
 572 }
 573
 574 static int sierra_startup(struct usb_serial *serial)
 575 {
 576         struct usb_serial_port *port;
 577         struct sierra_port_private *portdata;
 578         struct urb *urb;
 579         int i;
 580         int j;
 581
 582         dbg("%s", __FUNCTION__);
 583
 584         /*Set Device mode to D0 */
 585         sierra_set_power_state(serial->dev, 0x0000);
 586
 587         /* Now setup per port private data */
 588         for (i = 0; i < serial->num_ports; i++) {
 589                 port = serial->port[i];
 590                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
 591                 if (!portdata) {
 592                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
 593                                         __FUNCTION__, i);
 594                         return -ENOMEM;
 595                 }
 596                 spin_lock_init(&portdata->lock);
 597
 598                 usb_set_serial_port_data(port, portdata);
 599
 600                 /* initialize the in urbs */
 601                 for (j = 0; j < N_IN_URB; ++j) {
 602                         urb = usb_alloc_urb(0, GFP_KERNEL);
 603                         if (urb == NULL) {
 604                                 dbg("%s: alloc for in port failed.",
 605                                     __FUNCTION__);
 606                                 continue;
 607                         }
 608                         /* Fill URB using supplied data. */
 609                         usb_fill_bulk_urb(urb, serial->dev,
 610                                           usb_rcvbulkpipe(serial->dev,
 611                                                 port->bulk_in_endpointAddress),
 612                                           portdata->in_buffer[j], IN_BUFLEN,
 613                                           sierra_indat_callback, port);
 614                         portdata->in_urbs[j] = urb;
 615                 }
 616         }
 617
 618         return 0;
 619 }
 620
 621 static void sierra_shutdown(struct usb_serial *serial)
 622 {
 623         int i, j;
 624         struct usb_serial_port *port;
 625         struct sierra_port_private *portdata;
 626
 627         dbg("%s", __FUNCTION__);
 628
 629         for (i = 0; i < serial->num_ports; ++i) {
 630                 port = serial->port[i];
 631                 if (!port)
 632                         continue;
 633                 portdata = usb_get_serial_port_data(port);
 634                 if (!portdata)
 635                         continue;
 636
 637                 for (j = 0; j < N_IN_URB; j++) {
 638                         usb_kill_urb(portdata->in_urbs[j]);
 639                         usb_free_urb(portdata->in_urbs[j]);
 640                         portdata->in_urbs[j] = NULL;
 641                 }
 642                 kfree(portdata);
 643                 usb_set_serial_port_data(port, NULL);
 644         }
 645 }
 646
 647 static struct usb_serial_driver sierra_1port_device = {
 648         .driver = {
 649                 .owner =        THIS_MODULE,
 650                 .name =         "sierra1",
 651         },
 652         .description       = "Sierra USB modem (1 port)",
 653         .id_table          = id_table_1port,
 654         .usb_driver        = &sierra_driver,
 655         .num_interrupt_in  = NUM_DONT_CARE,
 656         .num_bulk_in       = 1,
 657         .num_bulk_out      = 1,
 658         .num_ports         = 1,
 659         .open              = sierra_open,
 660         .close             = sierra_close,
 661         .write             = sierra_write,
 662         .write_room        = sierra_write_room,
 663         .chars_in_buffer   = sierra_chars_in_buffer,
 664         .throttle          = sierra_rx_throttle,
 665         .unthrottle        = sierra_rx_unthrottle,
 666         .ioctl             = sierra_ioctl,
 667         .set_termios       = sierra_set_termios,
 668         .break_ctl         = sierra_break_ctl,
 669         .tiocmget          = sierra_tiocmget,
 670         .tiocmset          = sierra_tiocmset,
 671         .attach            = sierra_startup,
 672         .shutdown          = sierra_shutdown,
 673         .read_int_callback = sierra_instat_callback,
 674 };
 675
 676 static struct usb_serial_driver sierra_3port_device = {
 677         .driver = {
 678                 .owner =        THIS_MODULE,
 679                 .name =         "sierra3",
 680         },
 681         .description       = "Sierra USB modem (3 port)",
 682         .id_table          = id_table_3port,
 683         .usb_driver        = &sierra_driver,
 684         .num_interrupt_in  = NUM_DONT_CARE,
 685         .num_bulk_in       = 3,
 686         .num_bulk_out      = 3,
 687         .num_ports         = 3,
 688         .open              = sierra_open,
 689         .close             = sierra_close,
 690         .write             = sierra_write,
 691         .write_room        = sierra_write_room,
 692         .chars_in_buffer   = sierra_chars_in_buffer,
 693         .throttle          = sierra_rx_throttle,
 694         .unthrottle        = sierra_rx_unthrottle,
 695         .ioctl             = sierra_ioctl,
 696         .set_termios       = sierra_set_termios,
 697         .break_ctl         = sierra_break_ctl,
 698         .tiocmget          = sierra_tiocmget,
 699         .tiocmset          = sierra_tiocmset,
 700         .attach            = sierra_startup,
 701         .shutdown          = sierra_shutdown,
 702         .read_int_callback = sierra_instat_callback,
 703 };
 704
 705 /* Functions used by new usb-serial code. */
 706 static int __init sierra_init(void)
 707 {
 708         int retval;
 709         retval = usb_serial_register(&sierra_1port_device);
 710         if (retval)
 711                 goto failed_1port_device_register;
 712         retval = usb_serial_register(&sierra_3port_device);
 713         if (retval)
 714                 goto failed_3port_device_register;
 715
 716
 717         retval = usb_register(&sierra_driver);
 718         if (retval)
 719                 goto failed_driver_register;
 720
 721         info(DRIVER_DESC ": " DRIVER_VERSION);
 722
 723         return 0;
 724
 725 failed_driver_register:
 726         usb_serial_deregister(&sierra_3port_device);
 727 failed_3port_device_register:
 728         usb_serial_deregister(&sierra_1port_device);
 729 failed_1port_device_register:
 730         return retval;
 731 }
 732
 733 static void __exit sierra_exit(void)
 734 {
 735         usb_deregister (&sierra_driver);
 736         usb_serial_deregister(&sierra_1port_device);
 737         usb_serial_deregister(&sierra_3port_device);
 738 }
 739
 740 module_init(sierra_init);
 741 module_exit(sierra_exit);
 742
 743 MODULE_AUTHOR(DRIVER_AUTHOR);
 744 MODULE_DESCRIPTION(DRIVER_DESC);
 745 MODULE_VERSION(DRIVER_VERSION);
 746 MODULE_LICENSE("GPL");
 747
 748 #ifdef CONFIG_USB_DEBUG
 749 module_param(debug, bool, S_IRUGO | S_IWUSR);
 750 MODULE_PARM_DESC(debug, "Debug messages");
 751 #endif
 752