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