git.oblomov.eu Git - linux-2.6/blob - drivers/usb/serial/sierra.c

   1 /*
   2   USB Driver for Sierra Wireless
   3
   4   Copyright (C) 2006, 2007, 2008  Kevin Lloyd <klloyd@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.1.2.9c"
  18 #define DRIVER_AUTHOR "Kevin Lloyd <klloyd@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 #include <linux/usb/ch9.h>
  30
  31 #define SWIMS_USB_REQUEST_SetPower      0x00
  32 #define SWIMS_USB_REQUEST_SetNmea       0x07
  33 #define SWIMS_USB_REQUEST_SetMode       0x0B
  34 #define SWIMS_SET_MODE_Modem            0x0001
  35
  36 /* per port private data */
  37 #define N_IN_URB        4
  38 #define N_OUT_URB       4
  39 #define IN_BUFLEN       4096
  40
  41 static int debug;
  42 static int nmea;
  43 static int truinstall = 1;
  44
  45 enum devicetype {
  46         DEVICE_3_PORT =         0,
  47         DEVICE_1_PORT =         1,
  48         DEVICE_INSTALLER =      2,
  49 };
  50
  51 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
  52 {
  53         int result;
  54         dev_dbg(&udev->dev, "%s", "SET POWER STATE\n");
  55         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  56                         SWIMS_USB_REQUEST_SetPower,     /* __u8 request      */
  57                         USB_TYPE_VENDOR,                /* __u8 request type */
  58                         swiState,                       /* __u16 value       */
  59                         0,                              /* __u16 index       */
  60                         NULL,                           /* void *data        */
  61                         0,                              /* __u16 size        */
  62                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
  63         return result;
  64 }
  65
  66 static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSWocMode)
  67 {
  68         int result;
  69         dev_dbg(&udev->dev, "%s", "DEVICE MODE SWITCH\n");
  70         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  71                         SWIMS_USB_REQUEST_SetMode,      /* __u8 request      */
  72                         USB_TYPE_VENDOR,                /* __u8 request type */
  73                         eSWocMode,                      /* __u16 value       */
  74                         0x0000,                         /* __u16 index       */
  75                         NULL,                           /* void *data        */
  76                         0,                              /* __u16 size        */
  77                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
  78         return result;
  79 }
  80
  81 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
  82 {
  83         int result;
  84         dev_dbg(&udev->dev, "%s", "NMEA Enable sent\n");
  85         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  86                         SWIMS_USB_REQUEST_SetNmea,      /* __u8 request      */
  87                         USB_TYPE_VENDOR,                /* __u8 request type */
  88                         enable,                         /* __u16 value       */
  89                         0x0000,                         /* __u16 index       */
  90                         NULL,                           /* void *data        */
  91                         0,                              /* __u16 size        */
  92                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
  93         return result;
  94 }
  95
  96 static int sierra_calc_num_ports(struct usb_serial *serial)
  97 {
  98         int result;
  99         int *num_ports = usb_get_serial_data(serial);
 100
 101         result = *num_ports;
 102
 103         if (result) {
 104                 kfree(num_ports);
 105                 usb_set_serial_data(serial, NULL);
 106         }
 107
 108         return result;
 109 }
 110
 111 static int sierra_calc_interface(struct usb_serial *serial)
 112 {
 113                 int interface;
 114                 struct usb_interface *p_interface;
 115                 struct usb_host_interface *p_host_interface;
 116
 117                 /* Get the interface structure pointer from the serial struct */
 118                 p_interface = serial->interface;
 119
 120                 /* Get a pointer to the host interface structure */
 121                 p_host_interface = p_interface->cur_altsetting;
 122
 123                 /* read the interface descriptor for this active altsetting
 124                  * to find out the interface number we are on
 125                 */
 126                 interface = p_host_interface->desc.bInterfaceNumber;
 127
 128                 return interface;
 129 }
 130
 131 static int sierra_probe(struct usb_serial *serial,
 132                         const struct usb_device_id *id)
 133 {
 134         int result = 0;
 135         struct usb_device *udev;
 136         int *num_ports;
 137         u8 ifnum;
 138
 139         num_ports = kmalloc(sizeof(*num_ports), GFP_KERNEL);
 140         if (!num_ports)
 141                 return -ENOMEM;
 142
 143         ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
 144         udev = serial->dev;
 145
 146                 /* Figure out the interface number from the serial structure */
 147                 ifnum = sierra_calc_interface(serial);
 148
 149                 /*
 150                  * If this interface supports more than 1 alternate
 151                  * select the 2nd one
 152                  */
 153                 if (serial->interface->num_altsetting == 2) {
 154                         dev_dbg(&udev->dev,
 155                                 "Selecting alt setting for interface %d\n",
 156                                 ifnum);
 157
 158                         /* We know the alternate setting is 1 for the MC8785 */
 159                         usb_set_interface(udev, ifnum, 1);
 160                 }
 161
 162         /* Check if in installer mode */
 163         if (truinstall && id->driver_info == DEVICE_INSTALLER) {
 164                 dev_dbg(&udev->dev, "%s", "FOUND TRU-INSTALL DEVICE(SW)\n");
 165                 result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
 166                 /* Don't bind to the device when in installer mode */
 167                 kfree(num_ports);
 168                 return -EIO;
 169         } else if (id->driver_info == DEVICE_1_PORT)
 170                 *num_ports = 1;
 171         else if (ifnum == 0x99)
 172                 *num_ports = 0;
 173         else
 174                 *num_ports = 3;
 175         /*
 176          * save off our num_ports info so that we can use it in the
 177          * calc_num_ports callback
 178          */
 179         usb_set_serial_data(serial, (void *)num_ports);
 180
 181         return result;
 182 }
 183
 184 static struct usb_device_id id_table [] = {
 185         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
 186         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
 187         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
 188         { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
 189         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
 190         { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
 191         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
 192         { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
 193         { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
 194         { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) }, /* Sierra Wireless C597 */
 195
 196         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
 197         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
 198         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
 199         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
 200         { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Thinkpad internal) */
 201         { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
 202         { USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */
 203         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 204         { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
 205         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
 206         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
 207         { USB_DEVICE(0x1199, 0x683B), .driver_info = DEVICE_1_PORT },   /* Sierra Wireless MC8785 Composite*/
 208         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
 209         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
 210         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
 211         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
 212         { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
 213         { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
 214         { USB_DEVICE(0x1199, 0x6859), .driver_info = DEVICE_1_PORT },   /* Sierra Wireless AirCard 885 E */
 215         { USB_DEVICE(0x1199, 0x685A), .driver_info = DEVICE_1_PORT },   /* Sierra Wireless AirCard 885 E */
 216
 217         { USB_DEVICE(0x1199, 0x6468) }, /* Sierra Wireless MP3G - EVDO */
 218         { USB_DEVICE(0x1199, 0x6469) }, /* Sierra Wireless MP3G - UMTS/HSPA */
 219
 220         { USB_DEVICE(0x1199, 0x0112), .driver_info = DEVICE_1_PORT }, /* Sierra Wireless AirCard 580 */
 221         { USB_DEVICE(0x0F3D, 0x0112), .driver_info = DEVICE_1_PORT }, /* Airprime/Sierra PC 5220 */
 222
 223         { USB_DEVICE(0x1199, 0x0FFF), .driver_info = DEVICE_INSTALLER},
 224         { }
 225 };
 226 MODULE_DEVICE_TABLE(usb, id_table);
 227
 228 static struct usb_driver sierra_driver = {
 229         .name       = "sierra",
 230         .probe      = usb_serial_probe,
 231         .disconnect = usb_serial_disconnect,
 232         .id_table   = id_table,
 233         .no_dynamic_id =        1,
 234 };
 235
 236 struct sierra_port_private {
 237         spinlock_t lock;        /* lock the structure */
 238         int outstanding_urbs;   /* number of out urbs in flight */
 239
 240         /* Input endpoints and buffers for this port */
 241         struct urb *in_urbs[N_IN_URB];
 242         char *in_buffer[N_IN_URB];
 243
 244         /* Settings for the port */
 245         int rts_state;  /* Handshaking pins (outputs) */
 246         int dtr_state;
 247         int cts_state;  /* Handshaking pins (inputs) */
 248         int dsr_state;
 249         int dcd_state;
 250         int ri_state;
 251 };
 252
 253 static int sierra_send_setup(struct tty_struct *tty,
 254                                                 struct usb_serial_port *port)
 255 {
 256         struct usb_serial *serial = port->serial;
 257         struct sierra_port_private *portdata;
 258         __u16 interface = 0;
 259
 260         dbg("%s", __func__);
 261
 262         portdata = usb_get_serial_port_data(port);
 263
 264         if (tty) {
 265                 int val = 0;
 266                 if (portdata->dtr_state)
 267                         val |= 0x01;
 268                 if (portdata->rts_state)
 269                         val |= 0x02;
 270
 271                 /* Determine which port is targeted */
 272                 if (port->bulk_out_endpointAddress == 2)
 273                         interface = 0;
 274                 else if (port->bulk_out_endpointAddress == 4)
 275                         interface = 1;
 276                 else if (port->bulk_out_endpointAddress == 5)
 277                         interface = 2;
 278
 279                 return usb_control_msg(serial->dev,
 280                                 usb_rcvctrlpipe(serial->dev, 0),
 281                                 0x22, 0x21, val, interface,
 282                                 NULL, 0, USB_CTRL_SET_TIMEOUT);
 283         }
 284
 285         return 0;
 286 }
 287
 288 static void sierra_set_termios(struct tty_struct *tty,
 289                 struct usb_serial_port *port, struct ktermios *old_termios)
 290 {
 291         dbg("%s", __func__);
 292         tty_termios_copy_hw(tty->termios, old_termios);
 293         sierra_send_setup(tty, port);
 294 }
 295
 296 static int sierra_tiocmget(struct tty_struct *tty, struct file *file)
 297 {
 298         struct usb_serial_port *port = tty->driver_data;
 299         unsigned int value;
 300         struct sierra_port_private *portdata;
 301
 302         portdata = usb_get_serial_port_data(port);
 303
 304         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
 305                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
 306                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
 307                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
 308                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
 309                 ((portdata->ri_state) ? TIOCM_RNG : 0);
 310
 311         return value;
 312 }
 313
 314 static int sierra_tiocmset(struct tty_struct *tty, struct file *file,
 315                         unsigned int set, unsigned int clear)
 316 {
 317         struct usb_serial_port *port = tty->driver_data;
 318         struct sierra_port_private *portdata;
 319
 320         portdata = usb_get_serial_port_data(port);
 321
 322         if (set & TIOCM_RTS)
 323                 portdata->rts_state = 1;
 324         if (set & TIOCM_DTR)
 325                 portdata->dtr_state = 1;
 326
 327         if (clear & TIOCM_RTS)
 328                 portdata->rts_state = 0;
 329         if (clear & TIOCM_DTR)
 330                 portdata->dtr_state = 0;
 331         return sierra_send_setup(tty, port);
 332 }
 333
 334 static void sierra_outdat_callback(struct urb *urb)
 335 {
 336         struct usb_serial_port *port = urb->context;
 337         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 338         int status = urb->status;
 339         unsigned long flags;
 340
 341         dbg("%s - port %d", __func__, port->number);
 342
 343         /* free up the transfer buffer, as usb_free_urb() does not do this */
 344         kfree(urb->transfer_buffer);
 345
 346         if (status)
 347                 dbg("%s - nonzero write bulk status received: %d",
 348                     __func__, status);
 349
 350         spin_lock_irqsave(&portdata->lock, flags);
 351         --portdata->outstanding_urbs;
 352         spin_unlock_irqrestore(&portdata->lock, flags);
 353
 354         usb_serial_port_softint(port);
 355 }
 356
 357 /* Write */
 358 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
 359                                         const unsigned char *buf, int count)
 360 {
 361         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 362         struct usb_serial *serial = port->serial;
 363         unsigned long flags;
 364         unsigned char *buffer;
 365         struct urb *urb;
 366         int status;
 367
 368         portdata = usb_get_serial_port_data(port);
 369
 370         dbg("%s: write (%d chars)", __func__, count);
 371
 372         spin_lock_irqsave(&portdata->lock, flags);
 373         if (portdata->outstanding_urbs > N_OUT_URB) {
 374                 spin_unlock_irqrestore(&portdata->lock, flags);
 375                 dbg("%s - write limit hit\n", __func__);
 376                 return 0;
 377         }
 378         portdata->outstanding_urbs++;
 379         spin_unlock_irqrestore(&portdata->lock, flags);
 380
 381         buffer = kmalloc(count, GFP_ATOMIC);
 382         if (!buffer) {
 383                 dev_err(&port->dev, "out of memory\n");
 384                 count = -ENOMEM;
 385                 goto error_no_buffer;
 386         }
 387
 388         urb = usb_alloc_urb(0, GFP_ATOMIC);
 389         if (!urb) {
 390                 dev_err(&port->dev, "no more free urbs\n");
 391                 count = -ENOMEM;
 392                 goto error_no_urb;
 393         }
 394
 395         memcpy(buffer, buf, count);
 396
 397         usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
 398
 399         usb_fill_bulk_urb(urb, serial->dev,
 400                           usb_sndbulkpipe(serial->dev,
 401                                           port->bulk_out_endpointAddress),
 402                           buffer, count, sierra_outdat_callback, port);
 403
 404         /* send it down the pipe */
 405         status = usb_submit_urb(urb, GFP_ATOMIC);
 406         if (status) {
 407                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
 408                         "with status = %d\n", __func__, status);
 409                 count = status;
 410                 goto error;
 411         }
 412
 413         /* we are done with this urb, so let the host driver
 414          * really free it when it is finished with it */
 415         usb_free_urb(urb);
 416
 417         return count;
 418 error:
 419         usb_free_urb(urb);
 420 error_no_urb:
 421         kfree(buffer);
 422 error_no_buffer:
 423         spin_lock_irqsave(&portdata->lock, flags);
 424         --portdata->outstanding_urbs;
 425         spin_unlock_irqrestore(&portdata->lock, flags);
 426         return count;
 427 }
 428
 429 static void sierra_indat_callback(struct urb *urb)
 430 {
 431         int err;
 432         int endpoint;
 433         struct usb_serial_port *port;
 434         struct tty_struct *tty;
 435         unsigned char *data = urb->transfer_buffer;
 436         int status = urb->status;
 437
 438         dbg("%s: %p", __func__, urb);
 439
 440         endpoint = usb_pipeendpoint(urb->pipe);
 441         port =  urb->context;
 442
 443         if (status) {
 444                 dbg("%s: nonzero status: %d on endpoint %02x.",
 445                     __func__, status, endpoint);
 446         } else {
 447                 tty = port->port.tty;
 448                 if (urb->actual_length) {
 449                         tty_buffer_request_room(tty, urb->actual_length);
 450                         tty_insert_flip_string(tty, data, urb->actual_length);
 451                         tty_flip_buffer_push(tty);
 452                 } else {
 453                         dbg("%s: empty read urb received", __func__);
 454                 }
 455
 456                 /* Resubmit urb so we continue receiving */
 457                 if (port->port.count && status != -ESHUTDOWN) {
 458                         err = usb_submit_urb(urb, GFP_ATOMIC);
 459                         if (err)
 460                                 dev_err(&port->dev, "resubmit read urb failed."
 461                                         "(%d)\n", err);
 462                 }
 463         }
 464         return;
 465 }
 466
 467 static void sierra_instat_callback(struct urb *urb)
 468 {
 469         int err;
 470         int status = urb->status;
 471         struct usb_serial_port *port =  urb->context;
 472         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 473         struct usb_serial *serial = port->serial;
 474
 475         dbg("%s", __func__);
 476         dbg("%s: urb %p port %p has data %p", __func__, urb, port, portdata);
 477
 478         if (status == 0) {
 479                 struct usb_ctrlrequest *req_pkt =
 480                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
 481
 482                 if (!req_pkt) {
 483                         dbg("%s: NULL req_pkt\n", __func__);
 484                         return;
 485                 }
 486                 if ((req_pkt->bRequestType == 0xA1) &&
 487                                 (req_pkt->bRequest == 0x20)) {
 488                         int old_dcd_state;
 489                         unsigned char signals = *((unsigned char *)
 490                                         urb->transfer_buffer +
 491                                         sizeof(struct usb_ctrlrequest));
 492
 493                         dbg("%s: signal x%x", __func__, signals);
 494
 495                         old_dcd_state = portdata->dcd_state;
 496                         portdata->cts_state = 1;
 497                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
 498                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
 499                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
 500
 501                         if (port->port.tty && !C_CLOCAL(port->port.tty) &&
 502                                         old_dcd_state && !portdata->dcd_state)
 503                                 tty_hangup(port->port.tty);
 504                 } else {
 505                         dbg("%s: type %x req %x", __func__,
 506                                 req_pkt->bRequestType, req_pkt->bRequest);
 507                 }
 508         } else
 509                 dbg("%s: error %d", __func__, status);
 510
 511         /* Resubmit urb so we continue receiving IRQ data */
 512         if (status != -ESHUTDOWN) {
 513                 urb->dev = serial->dev;
 514                 err = usb_submit_urb(urb, GFP_ATOMIC);
 515                 if (err)
 516                         dbg("%s: resubmit intr urb failed. (%d)",
 517                                 __func__, err);
 518         }
 519 }
 520
 521 static int sierra_write_room(struct tty_struct *tty)
 522 {
 523         struct usb_serial_port *port = tty->driver_data;
 524         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 525         unsigned long flags;
 526
 527         dbg("%s - port %d", __func__, port->number);
 528
 529         /* try to give a good number back based on if we have any free urbs at
 530          * this point in time */
 531         spin_lock_irqsave(&portdata->lock, flags);
 532         if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
 533                 spin_unlock_irqrestore(&portdata->lock, flags);
 534                 dbg("%s - write limit hit\n", __func__);
 535                 return 0;
 536         }
 537         spin_unlock_irqrestore(&portdata->lock, flags);
 538
 539         return 2048;
 540 }
 541
 542 static int sierra_open(struct tty_struct *tty,
 543                         struct usb_serial_port *port, struct file *filp)
 544 {
 545         struct sierra_port_private *portdata;
 546         struct usb_serial *serial = port->serial;
 547         int i;
 548         struct urb *urb;
 549         int result;
 550
 551         portdata = usb_get_serial_port_data(port);
 552
 553         dbg("%s", __func__);
 554
 555         /* Set some sane defaults */
 556         portdata->rts_state = 1;
 557         portdata->dtr_state = 1;
 558
 559         /* Reset low level data toggle and start reading from endpoints */
 560         for (i = 0; i < N_IN_URB; i++) {
 561                 urb = portdata->in_urbs[i];
 562                 if (!urb)
 563                         continue;
 564                 if (urb->dev != serial->dev) {
 565                         dbg("%s: dev %p != %p", __func__,
 566                                 urb->dev, serial->dev);
 567                         continue;
 568                 }
 569
 570                 /*
 571                  * make sure endpoint data toggle is synchronized with the
 572                  * device
 573                  */
 574                 usb_clear_halt(urb->dev, urb->pipe);
 575
 576                 result = usb_submit_urb(urb, GFP_KERNEL);
 577                 if (result) {
 578                         dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
 579                                 i, result, urb->transfer_buffer_length);
 580                 }
 581         }
 582
 583         if (tty)
 584                 tty->low_latency = 1;
 585
 586         sierra_send_setup(tty, port);
 587
 588         /* start up the interrupt endpoint if we have one */
 589         if (port->interrupt_in_urb) {
 590                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 591                 if (result)
 592                         dev_err(&port->dev, "submit irq_in urb failed %d\n",
 593                                 result);
 594         }
 595         return 0;
 596 }
 597
 598 static void sierra_close(struct tty_struct *tty,
 599                         struct usb_serial_port *port, struct file *filp)
 600 {
 601         int i;
 602         struct usb_serial *serial = port->serial;
 603         struct sierra_port_private *portdata;
 604
 605         dbg("%s", __func__);
 606         portdata = usb_get_serial_port_data(port);
 607
 608         portdata->rts_state = 0;
 609         portdata->dtr_state = 0;
 610
 611         if (serial->dev) {
 612                 mutex_lock(&serial->disc_mutex);
 613                 if (!serial->disconnected)
 614                         sierra_send_setup(tty, port);
 615                 mutex_unlock(&serial->disc_mutex);
 616
 617                 /* Stop reading/writing urbs */
 618                 for (i = 0; i < N_IN_URB; i++)
 619                         usb_kill_urb(portdata->in_urbs[i]);
 620         }
 621
 622         usb_kill_urb(port->interrupt_in_urb);
 623
 624         port->port.tty = NULL;  /* FIXME */
 625 }
 626
 627 static int sierra_startup(struct usb_serial *serial)
 628 {
 629         struct usb_serial_port *port;
 630         struct sierra_port_private *portdata;
 631         struct urb *urb;
 632         int i;
 633         int j;
 634
 635         dbg("%s", __func__);
 636
 637         /* Set Device mode to D0 */
 638         sierra_set_power_state(serial->dev, 0x0000);
 639
 640         /* Check NMEA and set */
 641         if (nmea)
 642                 sierra_vsc_set_nmea(serial->dev, 1);
 643
 644         /* Now setup per port private data */
 645         for (i = 0; i < serial->num_ports; i++) {
 646                 port = serial->port[i];
 647                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
 648                 if (!portdata) {
 649                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
 650                                         __func__, i);
 651                         return -ENOMEM;
 652                 }
 653                 spin_lock_init(&portdata->lock);
 654                 for (j = 0; j < N_IN_URB; j++) {
 655                         portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL);
 656                         if (!portdata->in_buffer[j]) {
 657                                 for (--j; j >= 0; j--)
 658                                         kfree(portdata->in_buffer[j]);
 659                                 kfree(portdata);
 660                                 return -ENOMEM;
 661                         }
 662                 }
 663
 664                 usb_set_serial_port_data(port, portdata);
 665
 666                 /* initialize the in urbs */
 667                 for (j = 0; j < N_IN_URB; ++j) {
 668                         urb = usb_alloc_urb(0, GFP_KERNEL);
 669                         if (urb == NULL) {
 670                                 dbg("%s: alloc for in port failed.",
 671                                     __func__);
 672                                 continue;
 673                         }
 674                         /* Fill URB using supplied data. */
 675                         usb_fill_bulk_urb(urb, serial->dev,
 676                                           usb_rcvbulkpipe(serial->dev,
 677                                                 port->bulk_in_endpointAddress),
 678                                           portdata->in_buffer[j], IN_BUFLEN,
 679                                           sierra_indat_callback, port);
 680                         portdata->in_urbs[j] = urb;
 681                 }
 682         }
 683
 684         return 0;
 685 }
 686
 687 static void sierra_shutdown(struct usb_serial *serial)
 688 {
 689         int i, j;
 690         struct usb_serial_port *port;
 691         struct sierra_port_private *portdata;
 692
 693         dbg("%s", __func__);
 694
 695         for (i = 0; i < serial->num_ports; ++i) {
 696                 port = serial->port[i];
 697                 if (!port)
 698                         continue;
 699                 portdata = usb_get_serial_port_data(port);
 700                 if (!portdata)
 701                         continue;
 702
 703                 for (j = 0; j < N_IN_URB; j++) {
 704                         usb_kill_urb(portdata->in_urbs[j]);
 705                         usb_free_urb(portdata->in_urbs[j]);
 706                         kfree(portdata->in_buffer[j]);
 707                 }
 708                 kfree(portdata);
 709                 usb_set_serial_port_data(port, NULL);
 710         }
 711 }
 712
 713 static struct usb_serial_driver sierra_device = {
 714         .driver = {
 715                 .owner =        THIS_MODULE,
 716                 .name =         "sierra1",
 717         },
 718         .description       = "Sierra USB modem",
 719         .id_table          = id_table,
 720         .usb_driver        = &sierra_driver,
 721         .calc_num_ports    = sierra_calc_num_ports,
 722         .probe             = sierra_probe,
 723         .open              = sierra_open,
 724         .close             = sierra_close,
 725         .write             = sierra_write,
 726         .write_room        = sierra_write_room,
 727         .set_termios       = sierra_set_termios,
 728         .tiocmget          = sierra_tiocmget,
 729         .tiocmset          = sierra_tiocmset,
 730         .attach            = sierra_startup,
 731         .shutdown          = sierra_shutdown,
 732         .read_int_callback = sierra_instat_callback,
 733 };
 734
 735 /* Functions used by new usb-serial code. */
 736 static int __init sierra_init(void)
 737 {
 738         int retval;
 739         retval = usb_serial_register(&sierra_device);
 740         if (retval)
 741                 goto failed_device_register;
 742
 743
 744         retval = usb_register(&sierra_driver);
 745         if (retval)
 746                 goto failed_driver_register;
 747
 748         info(DRIVER_DESC ": " DRIVER_VERSION);
 749
 750         return 0;
 751
 752 failed_driver_register:
 753         usb_serial_deregister(&sierra_device);
 754 failed_device_register:
 755         return retval;
 756 }
 757
 758 static void __exit sierra_exit(void)
 759 {
 760         usb_deregister(&sierra_driver);
 761         usb_serial_deregister(&sierra_device);
 762 }
 763
 764 module_init(sierra_init);
 765 module_exit(sierra_exit);
 766
 767 MODULE_AUTHOR(DRIVER_AUTHOR);
 768 MODULE_DESCRIPTION(DRIVER_DESC);
 769 MODULE_VERSION(DRIVER_VERSION);
 770 MODULE_LICENSE("GPL");
 771
 772 module_param(truinstall, bool, 0);
 773 MODULE_PARM_DESC(truinstall, "TRU-Install support");
 774
 775 module_param(nmea, bool, 0);
 776 MODULE_PARM_DESC(nmea, "NMEA streaming");
 777
 778 #ifdef CONFIG_USB_DEBUG
 779 module_param(debug, bool, S_IRUGO | S_IWUSR);
 780 MODULE_PARM_DESC(debug, "Debug messages");
 781 #endif
 782