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