err.no Git - linux-2.6/blob - 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         { USB_DEVICE(0x1199, 0x0023) }, /* Sierra Wireless AirCard */
 108
 109         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
 110         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
 111         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
 112         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
 113         { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Thinkpad internal) */
 114         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 115         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
 116         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
 117         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
 118         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
 119         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
 120         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
 121         { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
 122         { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
 123
 124         { USB_DEVICE(0x1199, 0x6468) }, /* Sierra Wireless MP3G - EVDO */
 125         { USB_DEVICE(0x1199, 0x6469) }, /* Sierra Wireless MP3G - UMTS/HSPA */
 126
 127         { USB_DEVICE(0x1199, 0x0112), .driver_info = DEVICE_1_PORT }, /* Sierra Wireless AirCard 580 */
 128         { USB_DEVICE(0x0F3D, 0x0112), .driver_info = DEVICE_1_PORT }, /* Airprime/Sierra PC 5220 */
 129         { USB_DEVICE(0x05C6, 0x6613), .driver_info = DEVICE_1_PORT }, /* Onda H600/ZTE MF330 */
 130
 131         { USB_DEVICE(0x1199, 0x0FFF), .driver_info = DEVICE_INSTALLER},
 132         { }
 133 };
 134 MODULE_DEVICE_TABLE(usb, id_table);
 135
 136 static struct usb_device_id id_table_1port [] = {
 137         { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
 138         { USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
 139         { USB_DEVICE(0x05C6, 0x6613) }, /* Onda H600/ZTE MF330 */
 140         { }
 141 };
 142
 143 static struct usb_device_id id_table_3port [] = {
 144         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
 145         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
 146         { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
 147         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
 148         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
 149         { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
 150         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
 151         { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
 152         { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U*/
 153         { USB_DEVICE(0x1199, 0x0023) }, /* Sierra Wireless AirCard */
 154
 155         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
 156         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
 157         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
 158         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
 159         { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Thinkpad internal) */
 160         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 161         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
 162         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
 163         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
 164         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
 165         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880E */
 166         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881E */
 167         { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
 168         { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881U */
 169         { USB_DEVICE(0x1199, 0x6468) }, /* Sierra Wireless MP3G - EVDO */
 170         { USB_DEVICE(0x1199, 0x6469) }, /* Sierra Wireless MP3G - UMTS/HSPA */
 171         { }
 172 };
 173
 174 static struct usb_driver sierra_driver = {
 175         .name       = "sierra",
 176         .probe      = sierra_probe,
 177         .disconnect = usb_serial_disconnect,
 178         .id_table   = id_table,
 179         .no_dynamic_id =        1,
 180 };
 181
 182
 183 struct sierra_port_private {
 184         spinlock_t lock;        /* lock the structure */
 185         int outstanding_urbs;   /* number of out urbs in flight */
 186
 187         /* Input endpoints and buffer for this port */
 188         struct urb *in_urbs[N_IN_URB];
 189         char in_buffer[N_IN_URB][IN_BUFLEN];
 190
 191         /* Settings for the port */
 192         int rts_state;  /* Handshaking pins (outputs) */
 193         int dtr_state;
 194         int cts_state;  /* Handshaking pins (inputs) */
 195         int dsr_state;
 196         int dcd_state;
 197         int ri_state;
 198 };
 199
 200 static int sierra_send_setup(struct usb_serial_port *port)
 201 {
 202         struct usb_serial *serial = port->serial;
 203         struct sierra_port_private *portdata;
 204
 205         dbg("%s", __FUNCTION__);
 206
 207         portdata = usb_get_serial_port_data(port);
 208
 209         if (port->tty) {
 210                 int val = 0;
 211                 if (portdata->dtr_state)
 212                         val |= 0x01;
 213                 if (portdata->rts_state)
 214                         val |= 0x02;
 215
 216                 return usb_control_msg(serial->dev,
 217                                 usb_rcvctrlpipe(serial->dev, 0),
 218                                 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
 219         }
 220
 221         return 0;
 222 }
 223
 224 static void sierra_rx_throttle(struct usb_serial_port *port)
 225 {
 226         dbg("%s", __FUNCTION__);
 227 }
 228
 229 static void sierra_rx_unthrottle(struct usb_serial_port *port)
 230 {
 231         dbg("%s", __FUNCTION__);
 232 }
 233
 234 static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
 235 {
 236         /* Unfortunately, I don't know how to send a break */
 237         dbg("%s", __FUNCTION__);
 238 }
 239
 240 static void sierra_set_termios(struct usb_serial_port *port,
 241                         struct ktermios *old_termios)
 242 {
 243         dbg("%s", __FUNCTION__);
 244         tty_termios_copy_hw(port->tty->termios, old_termios);
 245         sierra_send_setup(port);
 246 }
 247
 248 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
 249 {
 250         unsigned int value;
 251         struct sierra_port_private *portdata;
 252
 253         portdata = usb_get_serial_port_data(port);
 254
 255         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
 256                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
 257                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
 258                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
 259                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
 260                 ((portdata->ri_state) ? TIOCM_RNG : 0);
 261
 262         return value;
 263 }
 264
 265 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
 266                         unsigned int set, unsigned int clear)
 267 {
 268         struct sierra_port_private *portdata;
 269
 270         portdata = usb_get_serial_port_data(port);
 271
 272         if (set & TIOCM_RTS)
 273                 portdata->rts_state = 1;
 274         if (set & TIOCM_DTR)
 275                 portdata->dtr_state = 1;
 276
 277         if (clear & TIOCM_RTS)
 278                 portdata->rts_state = 0;
 279         if (clear & TIOCM_DTR)
 280                 portdata->dtr_state = 0;
 281         return sierra_send_setup(port);
 282 }
 283
 284 static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
 285                         unsigned int cmd, unsigned long arg)
 286 {
 287         return -ENOIOCTLCMD;
 288 }
 289
 290 static void sierra_outdat_callback(struct urb *urb)
 291 {
 292         struct usb_serial_port *port = urb->context;
 293         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 294         int status = urb->status;
 295         unsigned long flags;
 296
 297         dbg("%s - port %d", __FUNCTION__, port->number);
 298
 299         /* free up the transfer buffer, as usb_free_urb() does not do this */
 300         kfree(urb->transfer_buffer);
 301
 302         if (status)
 303                 dbg("%s - nonzero write bulk status received: %d",
 304                     __FUNCTION__, status);
 305
 306         spin_lock_irqsave(&portdata->lock, flags);
 307         --portdata->outstanding_urbs;
 308         spin_unlock_irqrestore(&portdata->lock, flags);
 309
 310         usb_serial_port_softint(port);
 311 }
 312
 313 /* Write */
 314 static int sierra_write(struct usb_serial_port *port,
 315                         const unsigned char *buf, int count)
 316 {
 317         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 318         struct usb_serial *serial = port->serial;
 319         unsigned long flags;
 320         unsigned char *buffer;
 321         struct urb *urb;
 322         int status;
 323
 324         portdata = usb_get_serial_port_data(port);
 325
 326         dbg("%s: write (%d chars)", __FUNCTION__, count);
 327
 328         spin_lock_irqsave(&portdata->lock, flags);
 329         if (portdata->outstanding_urbs > N_OUT_URB) {
 330                 spin_unlock_irqrestore(&portdata->lock, flags);
 331                 dbg("%s - write limit hit\n", __FUNCTION__);
 332                 return 0;
 333         }
 334         portdata->outstanding_urbs++;
 335         spin_unlock_irqrestore(&portdata->lock, flags);
 336
 337         buffer = kmalloc(count, GFP_ATOMIC);
 338         if (!buffer) {
 339                 dev_err(&port->dev, "out of memory\n");
 340                 count = -ENOMEM;
 341                 goto error_no_buffer;
 342         }
 343
 344         urb = usb_alloc_urb(0, GFP_ATOMIC);
 345         if (!urb) {
 346                 dev_err(&port->dev, "no more free urbs\n");
 347                 count = -ENOMEM;
 348                 goto error_no_urb;
 349         }
 350
 351         memcpy(buffer, buf, count);
 352
 353         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
 354
 355         usb_fill_bulk_urb(urb, serial->dev,
 356                           usb_sndbulkpipe(serial->dev,
 357                                           port->bulk_out_endpointAddress),
 358                           buffer, count, sierra_outdat_callback, port);
 359
 360         /* send it down the pipe */
 361         status = usb_submit_urb(urb, GFP_ATOMIC);
 362         if (status) {
 363                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
 364                         "with status = %d\n", __FUNCTION__, status);
 365                 count = status;
 366                 goto error;
 367         }
 368
 369         /* we are done with this urb, so let the host driver
 370          * really free it when it is finished with it */
 371         usb_free_urb(urb);
 372
 373         return count;
 374 error:
 375         usb_free_urb(urb);
 376 error_no_urb:
 377         kfree(buffer);
 378 error_no_buffer:
 379         spin_lock_irqsave(&portdata->lock, flags);
 380         --portdata->outstanding_urbs;
 381         spin_unlock_irqrestore(&portdata->lock, flags);
 382         return count;
 383 }
 384
 385 static void sierra_indat_callback(struct urb *urb)
 386 {
 387         int err;
 388         int endpoint;
 389         struct usb_serial_port *port;
 390         struct tty_struct *tty;
 391         unsigned char *data = urb->transfer_buffer;
 392         int status = urb->status;
 393
 394         dbg("%s: %p", __FUNCTION__, urb);
 395
 396         endpoint = usb_pipeendpoint(urb->pipe);
 397         port = (struct usb_serial_port *) urb->context;
 398
 399         if (status) {
 400                 dbg("%s: nonzero status: %d on endpoint %02x.",
 401                     __FUNCTION__, status, endpoint);
 402         } else {
 403                 tty = port->tty;
 404                 if (urb->actual_length) {
 405                         tty_buffer_request_room(tty, urb->actual_length);
 406                         tty_insert_flip_string(tty, data, urb->actual_length);
 407                         tty_flip_buffer_push(tty);
 408                 } else {
 409                         dbg("%s: empty read urb received", __FUNCTION__);
 410                 }
 411
 412                 /* Resubmit urb so we continue receiving */
 413                 if (port->open_count && status != -ESHUTDOWN) {
 414                         err = usb_submit_urb(urb, GFP_ATOMIC);
 415                         if (err)
 416                                 dev_err(&port->dev, "resubmit read urb failed."
 417                                         "(%d)\n", err);
 418                 }
 419         }
 420         return;
 421 }
 422
 423 static void sierra_instat_callback(struct urb *urb)
 424 {
 425         int err;
 426         int status = urb->status;
 427         struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
 428         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 429         struct usb_serial *serial = port->serial;
 430
 431         dbg("%s", __FUNCTION__);
 432         dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
 433
 434         if (status == 0) {
 435                 struct usb_ctrlrequest *req_pkt =
 436                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
 437
 438                 if (!req_pkt) {
 439                         dbg("%s: NULL req_pkt\n", __FUNCTION__);
 440                         return;
 441                 }
 442                 if ((req_pkt->bRequestType == 0xA1) &&
 443                                 (req_pkt->bRequest == 0x20)) {
 444                         int old_dcd_state;
 445                         unsigned char signals = *((unsigned char *)
 446                                         urb->transfer_buffer +
 447                                         sizeof(struct usb_ctrlrequest));
 448
 449                         dbg("%s: signal x%x", __FUNCTION__, signals);
 450
 451                         old_dcd_state = portdata->dcd_state;
 452                         portdata->cts_state = 1;
 453                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
 454                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
 455                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
 456
 457                         if (port->tty && !C_CLOCAL(port->tty) &&
 458                                         old_dcd_state && !portdata->dcd_state)
 459                                 tty_hangup(port->tty);
 460                 } else {
 461                         dbg("%s: type %x req %x", __FUNCTION__,
 462                                 req_pkt->bRequestType,req_pkt->bRequest);
 463                 }
 464         } else
 465                 dbg("%s: error %d", __FUNCTION__, status);
 466
 467         /* Resubmit urb so we continue receiving IRQ data */
 468         if (status != -ESHUTDOWN) {
 469                 urb->dev = serial->dev;
 470                 err = usb_submit_urb(urb, GFP_ATOMIC);
 471                 if (err)
 472                         dbg("%s: resubmit intr urb failed. (%d)",
 473                                 __FUNCTION__, err);
 474         }
 475 }
 476
 477 static int sierra_write_room(struct usb_serial_port *port)
 478 {
 479         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 480         unsigned long flags;
 481
 482         dbg("%s - port %d", __FUNCTION__, port->number);
 483
 484         /* try to give a good number back based on if we have any free urbs at
 485          * this point in time */
 486         spin_lock_irqsave(&portdata->lock, flags);
 487         if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
 488                 spin_unlock_irqrestore(&portdata->lock, flags);
 489                 dbg("%s - write limit hit\n", __FUNCTION__);
 490                 return 0;
 491         }
 492         spin_unlock_irqrestore(&portdata->lock, flags);
 493
 494         return 2048;
 495 }
 496
 497 static int sierra_chars_in_buffer(struct usb_serial_port *port)
 498 {
 499         dbg("%s - port %d", __FUNCTION__, port->number);
 500
 501         /*
 502          * We can't really account for how much data we
 503          * have sent out, but hasn't made it through to the
 504          * device as we can't see the backend here, so just
 505          * tell the tty layer that everything is flushed.
 506          */
 507         return 0;
 508 }
 509
 510 static int sierra_open(struct usb_serial_port *port, struct file *filp)
 511 {
 512         struct sierra_port_private *portdata;
 513         struct usb_serial *serial = port->serial;
 514         int i;
 515         struct urb *urb;
 516         int result;
 517
 518         portdata = usb_get_serial_port_data(port);
 519
 520         dbg("%s", __FUNCTION__);
 521
 522         /* Set some sane defaults */
 523         portdata->rts_state = 1;
 524         portdata->dtr_state = 1;
 525
 526         /* Reset low level data toggle and start reading from endpoints */
 527         for (i = 0; i < N_IN_URB; i++) {
 528                 urb = portdata->in_urbs[i];
 529                 if (!urb)
 530                         continue;
 531                 if (urb->dev != serial->dev) {
 532                         dbg("%s: dev %p != %p", __FUNCTION__,
 533                                 urb->dev, serial->dev);
 534                         continue;
 535                 }
 536
 537                 /*
 538                  * make sure endpoint data toggle is synchronized with the
 539                  * device
 540                  */
 541                 usb_clear_halt(urb->dev, urb->pipe);
 542
 543                 result = usb_submit_urb(urb, GFP_KERNEL);
 544                 if (result) {
 545                         dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
 546                                 i, result, urb->transfer_buffer_length);
 547                 }
 548         }
 549
 550         port->tty->low_latency = 1;
 551
 552         sierra_send_setup(port);
 553
 554         /* start up the interrupt endpoint if we have one */
 555         if (port->interrupt_in_urb) {
 556                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 557                 if (result)
 558                         dev_err(&port->dev, "submit irq_in urb failed %d\n",
 559                                 result);
 560         }
 561         return 0;
 562 }
 563
 564 static void sierra_close(struct usb_serial_port *port, struct file *filp)
 565 {
 566         int i;
 567         struct usb_serial *serial = port->serial;
 568         struct sierra_port_private *portdata;
 569
 570         dbg("%s", __FUNCTION__);
 571         portdata = usb_get_serial_port_data(port);
 572
 573         portdata->rts_state = 0;
 574         portdata->dtr_state = 0;
 575
 576         if (serial->dev) {
 577                 sierra_send_setup(port);
 578
 579                 /* Stop reading/writing urbs */
 580                 for (i = 0; i < N_IN_URB; i++)
 581                         usb_kill_urb(portdata->in_urbs[i]);
 582         }
 583
 584         usb_kill_urb(port->interrupt_in_urb);
 585
 586         port->tty = NULL;
 587 }
 588
 589 static int sierra_startup(struct usb_serial *serial)
 590 {
 591         struct usb_serial_port *port;
 592         struct sierra_port_private *portdata;
 593         struct urb *urb;
 594         int i;
 595         int j;
 596
 597         dbg("%s", __FUNCTION__);
 598
 599         /*Set Device mode to D0 */
 600         sierra_set_power_state(serial->dev, 0x0000);
 601
 602         /* Now setup per port private data */
 603         for (i = 0; i < serial->num_ports; i++) {
 604                 port = serial->port[i];
 605                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
 606                 if (!portdata) {
 607                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
 608                                         __FUNCTION__, i);
 609                         return -ENOMEM;
 610                 }
 611                 spin_lock_init(&portdata->lock);
 612
 613                 usb_set_serial_port_data(port, portdata);
 614
 615                 /* initialize the in urbs */
 616                 for (j = 0; j < N_IN_URB; ++j) {
 617                         urb = usb_alloc_urb(0, GFP_KERNEL);
 618                         if (urb == NULL) {
 619                                 dbg("%s: alloc for in port failed.",
 620                                     __FUNCTION__);
 621                                 continue;
 622                         }
 623                         /* Fill URB using supplied data. */
 624                         usb_fill_bulk_urb(urb, serial->dev,
 625                                           usb_rcvbulkpipe(serial->dev,
 626                                                 port->bulk_in_endpointAddress),
 627                                           portdata->in_buffer[j], IN_BUFLEN,
 628                                           sierra_indat_callback, port);
 629                         portdata->in_urbs[j] = urb;
 630                 }
 631         }
 632
 633         return 0;
 634 }
 635
 636 static void sierra_shutdown(struct usb_serial *serial)
 637 {
 638         int i, j;
 639         struct usb_serial_port *port;
 640         struct sierra_port_private *portdata;
 641
 642         dbg("%s", __FUNCTION__);
 643
 644         for (i = 0; i < serial->num_ports; ++i) {
 645                 port = serial->port[i];
 646                 if (!port)
 647                         continue;
 648                 portdata = usb_get_serial_port_data(port);
 649                 if (!portdata)
 650                         continue;
 651
 652                 for (j = 0; j < N_IN_URB; j++) {
 653                         usb_kill_urb(portdata->in_urbs[j]);
 654                         usb_free_urb(portdata->in_urbs[j]);
 655                         portdata->in_urbs[j] = NULL;
 656                 }
 657                 kfree(portdata);
 658                 usb_set_serial_port_data(port, NULL);
 659         }
 660 }
 661
 662 static struct usb_serial_driver sierra_1port_device = {
 663         .driver = {
 664                 .owner =        THIS_MODULE,
 665                 .name =         "sierra1",
 666         },
 667         .description       = "Sierra USB modem (1 port)",
 668         .id_table          = id_table_1port,
 669         .usb_driver        = &sierra_driver,
 670         .num_interrupt_in  = NUM_DONT_CARE,
 671         .num_bulk_in       = 1,
 672         .num_bulk_out      = 1,
 673         .num_ports         = 1,
 674         .open              = sierra_open,
 675         .close             = sierra_close,
 676         .write             = sierra_write,
 677         .write_room        = sierra_write_room,
 678         .chars_in_buffer   = sierra_chars_in_buffer,
 679         .throttle          = sierra_rx_throttle,
 680         .unthrottle        = sierra_rx_unthrottle,
 681         .ioctl             = sierra_ioctl,
 682         .set_termios       = sierra_set_termios,
 683         .break_ctl         = sierra_break_ctl,
 684         .tiocmget          = sierra_tiocmget,
 685         .tiocmset          = sierra_tiocmset,
 686         .attach            = sierra_startup,
 687         .shutdown          = sierra_shutdown,
 688         .read_int_callback = sierra_instat_callback,
 689 };
 690
 691 static struct usb_serial_driver sierra_3port_device = {
 692         .driver = {
 693                 .owner =        THIS_MODULE,
 694                 .name =         "sierra3",
 695         },
 696         .description       = "Sierra USB modem (3 port)",
 697         .id_table          = id_table_3port,
 698         .usb_driver        = &sierra_driver,
 699         .num_interrupt_in  = NUM_DONT_CARE,
 700         .num_bulk_in       = 3,
 701         .num_bulk_out      = 3,
 702         .num_ports         = 3,
 703         .open              = sierra_open,
 704         .close             = sierra_close,
 705         .write             = sierra_write,
 706         .write_room        = sierra_write_room,
 707         .chars_in_buffer   = sierra_chars_in_buffer,
 708         .throttle          = sierra_rx_throttle,
 709         .unthrottle        = sierra_rx_unthrottle,
 710         .ioctl             = sierra_ioctl,
 711         .set_termios       = sierra_set_termios,
 712         .break_ctl         = sierra_break_ctl,
 713         .tiocmget          = sierra_tiocmget,
 714         .tiocmset          = sierra_tiocmset,
 715         .attach            = sierra_startup,
 716         .shutdown          = sierra_shutdown,
 717         .read_int_callback = sierra_instat_callback,
 718 };
 719
 720 /* Functions used by new usb-serial code. */
 721 static int __init sierra_init(void)
 722 {
 723         int retval;
 724         retval = usb_serial_register(&sierra_1port_device);
 725         if (retval)
 726                 goto failed_1port_device_register;
 727         retval = usb_serial_register(&sierra_3port_device);
 728         if (retval)
 729                 goto failed_3port_device_register;
 730
 731
 732         retval = usb_register(&sierra_driver);
 733         if (retval)
 734                 goto failed_driver_register;
 735
 736         info(DRIVER_DESC ": " DRIVER_VERSION);
 737
 738         return 0;
 739
 740 failed_driver_register:
 741         usb_serial_deregister(&sierra_3port_device);
 742 failed_3port_device_register:
 743         usb_serial_deregister(&sierra_1port_device);
 744 failed_1port_device_register:
 745         return retval;
 746 }
 747
 748 static void __exit sierra_exit(void)
 749 {
 750         usb_deregister (&sierra_driver);
 751         usb_serial_deregister(&sierra_1port_device);
 752         usb_serial_deregister(&sierra_3port_device);
 753 }
 754
 755 module_init(sierra_init);
 756 module_exit(sierra_exit);
 757
 758 MODULE_AUTHOR(DRIVER_AUTHOR);
 759 MODULE_DESCRIPTION(DRIVER_DESC);
 760 MODULE_VERSION(DRIVER_VERSION);
 761 MODULE_LICENSE("GPL");
 762
 763 #ifdef CONFIG_USB_DEBUG
 764 module_param(debug, bool, S_IRUGO | S_IWUSR);
 765 MODULE_PARM_DESC(debug, "Debug messages");
 766 #endif
 767