git.oblomov.eu Git - linux-2.6/blob - drivers/net/wimax/i2400m/usb.c

   1 /*
   2  * Intel Wireless WiMAX Connection 2400m
   3  * Linux driver model glue for USB device, reset & fw upload
   4  *
   5  *
   6  * Copyright (C) 2007-2008 Intel Corporation <linux-wimax@intel.com>
   7  * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
   8  * Yanir Lubetkin <yanirx.lubetkin@intel.com>
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License version
  12  * 2 as published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  22  * 02110-1301, USA.
  23  *
  24  *
  25  * See i2400m-usb.h for a general description of this driver.
  26  *
  27  * This file implements driver model glue, and hook ups for the
  28  * generic driver to implement the bus-specific functions (device
  29  * communication setup/tear down, firmware upload and resetting).
  30  *
  31  * ROADMAP
  32  *
  33  * i2400mu_probe()
  34  *   alloc_netdev()...
  35  *     i2400mu_netdev_setup()
  36  *       i2400mu_init()
  37  *       i2400m_netdev_setup()
  38  *   i2400m_setup()...
  39  *
  40  * i2400mu_disconnect
  41  *   i2400m_release()
  42  *   free_netdev()
  43  *
  44  * i2400mu_suspend()
  45  *   i2400m_cmd_enter_powersave()
  46  *   i2400mu_notification_release()
  47  *
  48  * i2400mu_resume()
  49  *   i2400mu_notification_setup()
  50  *
  51  * i2400mu_bus_dev_start()        Called by i2400m_dev_start() [who is
  52  *   i2400mu_tx_setup()           called by i2400m_setup()]
  53  *   i2400mu_rx_setup()
  54  *   i2400mu_notification_setup()
  55  *
  56  * i2400mu_bus_dev_stop()         Called by i2400m_dev_stop() [who is
  57  *   i2400mu_notification_release()  called by i2400m_release()]
  58  *   i2400mu_rx_release()
  59  *   i2400mu_tx_release()
  60  *
  61  * i2400mu_bus_reset()            Called by i2400m->bus_reset
  62  *   __i2400mu_reset()
  63  *     __i2400mu_send_barker()
  64  *   usb_reset_device()
  65  */
  66 #include "i2400m-usb.h"
  67 #include <linux/wimax/i2400m.h>
  68 #include <linux/debugfs.h>
  69
  70
  71 #define D_SUBMODULE usb
  72 #include "usb-debug-levels.h"
  73
  74
  75 /* Our firmware file name */
  76 static const char *i2400mu_bus_fw_names[] = {
  77 #define I2400MU_FW_FILE_NAME_v1_4 "i2400m-fw-usb-1.4.sbcf"
  78         I2400MU_FW_FILE_NAME_v1_4,
  79 #define I2400MU_FW_FILE_NAME_v1_3 "i2400m-fw-usb-1.3.sbcf"
  80         I2400MU_FW_FILE_NAME_v1_3,
  81         NULL,
  82 };
  83
  84
  85 static
  86 int i2400mu_bus_dev_start(struct i2400m *i2400m)
  87 {
  88         int result;
  89         struct i2400mu *i2400mu = container_of(i2400m, struct i2400mu, i2400m);
  90         struct device *dev = &i2400mu->usb_iface->dev;
  91
  92         d_fnstart(3, dev, "(i2400m %p)\n", i2400m);
  93         result = i2400mu_tx_setup(i2400mu);
  94         if (result < 0)
  95                 goto error_usb_tx_setup;
  96         result = i2400mu_rx_setup(i2400mu);
  97         if (result < 0)
  98                 goto error_usb_rx_setup;
  99         result = i2400mu_notification_setup(i2400mu);
 100         if (result < 0)
 101                 goto error_notif_setup;
 102         d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result);
 103         return result;
 104
 105 error_notif_setup:
 106         i2400mu_rx_release(i2400mu);
 107 error_usb_rx_setup:
 108         i2400mu_tx_release(i2400mu);
 109 error_usb_tx_setup:
 110         d_fnend(3, dev, "(i2400m %p) = void\n", i2400m);
 111         return result;
 112 }
 113
 114
 115 static
 116 void i2400mu_bus_dev_stop(struct i2400m *i2400m)
 117 {
 118         struct i2400mu *i2400mu = container_of(i2400m, struct i2400mu, i2400m);
 119         struct device *dev = &i2400mu->usb_iface->dev;
 120
 121         d_fnstart(3, dev, "(i2400m %p)\n", i2400m);
 122         i2400mu_notification_release(i2400mu);
 123         i2400mu_rx_release(i2400mu);
 124         i2400mu_tx_release(i2400mu);
 125         d_fnend(3, dev, "(i2400m %p) = void\n", i2400m);
 126 }
 127
 128
 129 /*
 130  * Sends a barker buffer to the device
 131  *
 132  * This helper will allocate a kmalloced buffer and use it to transmit
 133  * (then free it). Reason for this is that other arches cannot use
 134  * stack/vmalloc/text areas for DMA transfers.
 135  *
 136  * Error recovery here is simpler: anything is considered a hard error
 137  * and will move the reset code to use a last-resort bus-based reset.
 138  */
 139 static
 140 int __i2400mu_send_barker(struct i2400mu *i2400mu,
 141                           const __le32 *barker,
 142                           size_t barker_size,
 143                           unsigned endpoint)
 144 {
 145         struct usb_endpoint_descriptor *epd = NULL;
 146         int pipe, actual_len, ret;
 147         struct device *dev = &i2400mu->usb_iface->dev;
 148         void *buffer;
 149         int do_autopm = 1;
 150
 151         ret = usb_autopm_get_interface(i2400mu->usb_iface);
 152         if (ret < 0) {
 153                 dev_err(dev, "RESET: can't get autopm: %d\n", ret);
 154                 do_autopm = 0;
 155         }
 156         ret = -ENOMEM;
 157         buffer = kmalloc(barker_size, GFP_KERNEL);
 158         if (buffer == NULL)
 159                 goto error_kzalloc;
 160         epd = usb_get_epd(i2400mu->usb_iface, endpoint);
 161         pipe = usb_sndbulkpipe(i2400mu->usb_dev, epd->bEndpointAddress);
 162         memcpy(buffer, barker, barker_size);
 163         ret = usb_bulk_msg(i2400mu->usb_dev, pipe, buffer, barker_size,
 164                            &actual_len, HZ);
 165         if (ret < 0) {
 166                 if (ret != -EINVAL)
 167                         dev_err(dev, "E: barker error: %d\n", ret);
 168         } else if (actual_len != barker_size) {
 169                 dev_err(dev, "E: only %d bytes transmitted\n", actual_len);
 170                 ret = -EIO;
 171         }
 172         kfree(buffer);
 173 error_kzalloc:
 174         if (do_autopm)
 175                 usb_autopm_put_interface(i2400mu->usb_iface);
 176         return ret;
 177 }
 178
 179
 180 /*
 181  * Reset a device at different levels (warm, cold or bus)
 182  *
 183  * @i2400m: device descriptor
 184  * @reset_type: soft, warm or bus reset (I2400M_RT_WARM/SOFT/BUS)
 185  *
 186  * Warm and cold resets get a USB reset if they fail.
 187  *
 188  * Warm reset:
 189  *
 190  * The device will be fully reset internally, but won't be
 191  * disconnected from the USB bus (so no reenumeration will
 192  * happen). Firmware upload will be neccessary.
 193  *
 194  * The device will send a reboot barker in the notification endpoint
 195  * that will trigger the driver to reinitialize the state
 196  * automatically from notif.c:i2400m_notification_grok() into
 197  * i2400m_dev_bootstrap_delayed().
 198  *
 199  * Cold and bus (USB) reset:
 200  *
 201  * The device will be fully reset internally, disconnected from the
 202  * USB bus an a reenumeration will happen. Firmware upload will be
 203  * neccessary. Thus, we don't do any locking or struct
 204  * reinitialization, as we are going to be fully disconnected and
 205  * reenumerated.
 206  *
 207  * Note we need to return -ENODEV if a warm reset was requested and we
 208  * had to resort to a bus reset. See i2400m_op_reset(), wimax_reset()
 209  * and wimax_dev->op_reset.
 210  *
 211  * WARNING: no driver state saved/fixed
 212  */
 213 static
 214 int i2400mu_bus_reset(struct i2400m *i2400m, enum i2400m_reset_type rt)
 215 {
 216         int result;
 217         struct i2400mu *i2400mu =
 218                 container_of(i2400m, struct i2400mu, i2400m);
 219         struct device *dev = i2400m_dev(i2400m);
 220         static const __le32 i2400m_WARM_BOOT_BARKER[4] = {
 221                 cpu_to_le32(I2400M_WARM_RESET_BARKER),
 222                 cpu_to_le32(I2400M_WARM_RESET_BARKER),
 223                 cpu_to_le32(I2400M_WARM_RESET_BARKER),
 224                 cpu_to_le32(I2400M_WARM_RESET_BARKER),
 225         };
 226         static const __le32 i2400m_COLD_BOOT_BARKER[4] = {
 227                 cpu_to_le32(I2400M_COLD_RESET_BARKER),
 228                 cpu_to_le32(I2400M_COLD_RESET_BARKER),
 229                 cpu_to_le32(I2400M_COLD_RESET_BARKER),
 230                 cpu_to_le32(I2400M_COLD_RESET_BARKER),
 231         };
 232
 233         d_fnstart(3, dev, "(i2400m %p rt %u)\n", i2400m, rt);
 234         if (rt == I2400M_RT_WARM)
 235                 result = __i2400mu_send_barker(i2400mu, i2400m_WARM_BOOT_BARKER,
 236                                                sizeof(i2400m_WARM_BOOT_BARKER),
 237                                                I2400MU_EP_BULK_OUT);
 238         else if (rt == I2400M_RT_COLD)
 239                 result = __i2400mu_send_barker(i2400mu, i2400m_COLD_BOOT_BARKER,
 240                                                sizeof(i2400m_COLD_BOOT_BARKER),
 241                                                I2400MU_EP_RESET_COLD);
 242         else if (rt == I2400M_RT_BUS) {
 243 do_bus_reset:
 244                 result = usb_reset_device(i2400mu->usb_dev);
 245                 switch (result) {
 246                 case 0:
 247                 case -EINVAL:   /* device is gone */
 248                 case -ENODEV:
 249                 case -ENOENT:
 250                 case -ESHUTDOWN:
 251                         result = rt == I2400M_RT_WARM ? -ENODEV : 0;
 252                         break;  /* We assume the device is disconnected */
 253                 default:
 254                         dev_err(dev, "USB reset failed (%d), giving up!\n",
 255                                 result);
 256                 }
 257         } else
 258                 BUG();
 259         if (result < 0
 260             && result != -EINVAL        /* device is gone */
 261             && rt != I2400M_RT_BUS) {
 262                 dev_err(dev, "%s reset failed (%d); trying USB reset\n",
 263                         rt == I2400M_RT_WARM ? "warm" : "cold", result);
 264                 rt = I2400M_RT_BUS;
 265                 goto do_bus_reset;
 266         }
 267         d_fnend(3, dev, "(i2400m %p rt %u) = %d\n", i2400m, rt, result);
 268         return result;
 269 }
 270
 271
 272 static
 273 void i2400mu_netdev_setup(struct net_device *net_dev)
 274 {
 275         struct i2400m *i2400m = net_dev_to_i2400m(net_dev);
 276         struct i2400mu *i2400mu = container_of(i2400m, struct i2400mu, i2400m);
 277         i2400mu_init(i2400mu);
 278         i2400m_netdev_setup(net_dev);
 279 }
 280
 281
 282 /*
 283  * Debug levels control; see debug.h
 284  */
 285 struct d_level D_LEVEL[] = {
 286         D_SUBMODULE_DEFINE(usb),
 287         D_SUBMODULE_DEFINE(fw),
 288         D_SUBMODULE_DEFINE(notif),
 289         D_SUBMODULE_DEFINE(rx),
 290         D_SUBMODULE_DEFINE(tx),
 291 };
 292 size_t D_LEVEL_SIZE = ARRAY_SIZE(D_LEVEL);
 293
 294
 295 #define __debugfs_register(prefix, name, parent)                        \
 296 do {                                                                    \
 297         result = d_level_register_debugfs(prefix, name, parent);        \
 298         if (result < 0)                                                 \
 299                 goto error;                                             \
 300 } while (0)
 301
 302
 303 static
 304 int i2400mu_debugfs_add(struct i2400mu *i2400mu)
 305 {
 306         int result;
 307         struct device *dev = &i2400mu->usb_iface->dev;
 308         struct dentry *dentry = i2400mu->i2400m.wimax_dev.debugfs_dentry;
 309         struct dentry *fd;
 310
 311         dentry = debugfs_create_dir("i2400m-usb", dentry);
 312         result = PTR_ERR(dentry);
 313         if (IS_ERR(dentry)) {
 314                 if (result == -ENODEV)
 315                         result = 0;     /* No debugfs support */
 316                 goto error;
 317         }
 318         i2400mu->debugfs_dentry = dentry;
 319         __debugfs_register("dl_", usb, dentry);
 320         __debugfs_register("dl_", fw, dentry);
 321         __debugfs_register("dl_", notif, dentry);
 322         __debugfs_register("dl_", rx, dentry);
 323         __debugfs_register("dl_", tx, dentry);
 324
 325         /* Don't touch these if you don't know what you are doing */
 326         fd = debugfs_create_u8("rx_size_auto_shrink", 0600, dentry,
 327                                &i2400mu->rx_size_auto_shrink);
 328         result = PTR_ERR(fd);
 329         if (IS_ERR(fd) && result != -ENODEV) {
 330                 dev_err(dev, "Can't create debugfs entry "
 331                         "rx_size_auto_shrink: %d\n", result);
 332                 goto error;
 333         }
 334
 335         fd = debugfs_create_size_t("rx_size", 0600, dentry,
 336                                    &i2400mu->rx_size);
 337         result = PTR_ERR(fd);
 338         if (IS_ERR(fd) && result != -ENODEV) {
 339                 dev_err(dev, "Can't create debugfs entry "
 340                         "rx_size: %d\n", result);
 341                 goto error;
 342         }
 343
 344         return 0;
 345
 346 error:
 347         debugfs_remove_recursive(i2400mu->debugfs_dentry);
 348         return result;
 349 }
 350
 351
 352 /*
 353  * Probe a i2400m interface and register it
 354  *
 355  * @iface:   USB interface to link to
 356  * @id:      USB class/subclass/protocol id
 357  * @returns: 0 if ok, < 0 errno code on error.
 358  *
 359  * Alloc a net device, initialize the bus-specific details and then
 360  * calls the bus-generic initialization routine. That will register
 361  * the wimax and netdev devices, upload the firmware [using
 362  * _bus_bm_*()], call _bus_dev_start() to finalize the setup of the
 363  * communication with the device and then will start to talk to it to
 364  * finnish setting it up.
 365  */
 366 static
 367 int i2400mu_probe(struct usb_interface *iface,
 368                   const struct usb_device_id *id)
 369 {
 370         int result;
 371         struct net_device *net_dev;
 372         struct device *dev = &iface->dev;
 373         struct i2400m *i2400m;
 374         struct i2400mu *i2400mu;
 375         struct usb_device *usb_dev = interface_to_usbdev(iface);
 376
 377         if (usb_dev->speed != USB_SPEED_HIGH)
 378                 dev_err(dev, "device not connected as high speed\n");
 379
 380         /* Allocate instance [calls i2400m_netdev_setup() on it]. */
 381         result = -ENOMEM;
 382         net_dev = alloc_netdev(sizeof(*i2400mu), "wmx%d",
 383                                i2400mu_netdev_setup);
 384         if (net_dev == NULL) {
 385                 dev_err(dev, "no memory for network device instance\n");
 386                 goto error_alloc_netdev;
 387         }
 388         SET_NETDEV_DEV(net_dev, dev);
 389         i2400m = net_dev_to_i2400m(net_dev);
 390         i2400mu = container_of(i2400m, struct i2400mu, i2400m);
 391         i2400m->wimax_dev.net_dev = net_dev;
 392         i2400mu->usb_dev = usb_get_dev(usb_dev);
 393         i2400mu->usb_iface = iface;
 394         usb_set_intfdata(iface, i2400mu);
 395
 396         i2400m->bus_tx_block_size = I2400MU_BLK_SIZE;
 397         i2400m->bus_pl_size_max = I2400MU_PL_SIZE_MAX;
 398         i2400m->bus_dev_start = i2400mu_bus_dev_start;
 399         i2400m->bus_dev_stop = i2400mu_bus_dev_stop;
 400         i2400m->bus_tx_kick = i2400mu_bus_tx_kick;
 401         i2400m->bus_reset = i2400mu_bus_reset;
 402         i2400m->bus_bm_cmd_send = i2400mu_bus_bm_cmd_send;
 403         i2400m->bus_bm_wait_for_ack = i2400mu_bus_bm_wait_for_ack;
 404         i2400m->bus_fw_names = i2400mu_bus_fw_names;
 405         i2400m->bus_bm_mac_addr_impaired = 0;
 406
 407 #ifdef CONFIG_PM
 408         iface->needs_remote_wakeup = 1;         /* autosuspend (15s delay) */
 409         device_init_wakeup(dev, 1);
 410         usb_autopm_enable(i2400mu->usb_iface);
 411         usb_dev->autosuspend_delay = 15 * HZ;
 412         usb_dev->autosuspend_disabled = 0;
 413 #endif
 414
 415         result = i2400m_setup(i2400m, I2400M_BRI_MAC_REINIT);
 416         if (result < 0) {
 417                 dev_err(dev, "cannot setup device: %d\n", result);
 418                 goto error_setup;
 419         }
 420         result = i2400mu_debugfs_add(i2400mu);
 421         if (result < 0) {
 422                 dev_err(dev, "Can't register i2400mu's debugfs: %d\n", result);
 423                 goto error_debugfs_add;
 424         }
 425         return 0;
 426
 427 error_debugfs_add:
 428         i2400m_release(i2400m);
 429 error_setup:
 430         usb_set_intfdata(iface, NULL);
 431         usb_put_dev(i2400mu->usb_dev);
 432         free_netdev(net_dev);
 433 error_alloc_netdev:
 434         return result;
 435 }
 436
 437
 438 /*
 439  * Disconect a i2400m from the system.
 440  *
 441  * i2400m_stop() has been called before, so al the rx and tx contexts
 442  * have been taken down already. Make sure the queue is stopped,
 443  * unregister netdev and i2400m, free and kill.
 444  */
 445 static
 446 void i2400mu_disconnect(struct usb_interface *iface)
 447 {
 448         struct i2400mu *i2400mu = usb_get_intfdata(iface);
 449         struct i2400m *i2400m = &i2400mu->i2400m;
 450         struct net_device *net_dev = i2400m->wimax_dev.net_dev;
 451         struct device *dev = &iface->dev;
 452
 453         d_fnstart(3, dev, "(iface %p i2400m %p)\n", iface, i2400m);
 454
 455         debugfs_remove_recursive(i2400mu->debugfs_dentry);
 456         i2400m_release(i2400m);
 457         usb_set_intfdata(iface, NULL);
 458         usb_put_dev(i2400mu->usb_dev);
 459         free_netdev(net_dev);
 460         d_fnend(3, dev, "(iface %p i2400m %p) = void\n", iface, i2400m);
 461 }
 462
 463
 464 /*
 465  * Get the device ready for USB port or system standby and hibernation
 466  *
 467  * USB port and system standby are handled the same.
 468  *
 469  * When the system hibernates, the USB device is powered down and then
 470  * up, so we don't really have to do much here, as it will be seen as
 471  * a reconnect. Still for simplicity we consider this case the same as
 472  * suspend, so that the device has a chance to do notify the base
 473  * station (if connected).
 474  *
 475  * So at the end, the three cases require common handling.
 476  *
 477  * If at the time of this call the device's firmware is not loaded,
 478  * nothing has to be done.
 479  *
 480  * If the firmware is loaded, we need to:
 481  *
 482  *  - tell the device to go into host interface power save mode, wait
 483  *    for it to ack
 484  *
 485  *    This is quite more interesting than it is; we need to execute a
 486  *    command, but this time, we don't want the code in usb-{tx,rx}.c
 487  *    to call the usb_autopm_get/put_interface() barriers as it'd
 488  *    deadlock, so we need to decrement i2400mu->do_autopm, that acts
 489  *    as a poor man's semaphore. Ugly, but it works.
 490  *
 491  *    As well, the device might refuse going to sleep for whichever
 492  *    reason. In this case we just fail. For system suspend/hibernate,
 493  *    we *can't* fail. We look at usb_dev->auto_pm to see if the
 494  *    suspend call comes from the USB stack or from the system and act
 495  *    in consequence.
 496  *
 497  *  - stop the notification endpoint polling
 498  */
 499 static
 500 int i2400mu_suspend(struct usb_interface *iface, pm_message_t pm_msg)
 501 {
 502         int result = 0;
 503         struct device *dev = &iface->dev;
 504         struct i2400mu *i2400mu = usb_get_intfdata(iface);
 505 #ifdef CONFIG_PM
 506         struct usb_device *usb_dev = i2400mu->usb_dev;
 507 #endif
 508         struct i2400m *i2400m = &i2400mu->i2400m;
 509
 510         d_fnstart(3, dev, "(iface %p pm_msg %u)\n", iface, pm_msg.event);
 511         if (i2400m->updown == 0)
 512                 goto no_firmware;
 513         d_printf(1, dev, "fw up, requesting standby\n");
 514         atomic_dec(&i2400mu->do_autopm);
 515         result = i2400m_cmd_enter_powersave(i2400m);
 516         atomic_inc(&i2400mu->do_autopm);
 517 #ifdef CONFIG_PM
 518         if (result < 0 && usb_dev->auto_pm == 0) {
 519                 /* System suspend, can't fail */
 520                 dev_err(dev, "failed to suspend, will reset on resume\n");
 521                 result = 0;
 522         }
 523 #endif
 524         if (result < 0)
 525                 goto error_enter_powersave;
 526         i2400mu_notification_release(i2400mu);
 527         d_printf(1, dev, "fw up, got standby\n");
 528 error_enter_powersave:
 529 no_firmware:
 530         d_fnend(3, dev, "(iface %p pm_msg %u) = %d\n",
 531                 iface, pm_msg.event, result);
 532         return result;
 533 }
 534
 535
 536 static
 537 int i2400mu_resume(struct usb_interface *iface)
 538 {
 539         int ret = 0;
 540         struct device *dev = &iface->dev;
 541         struct i2400mu *i2400mu = usb_get_intfdata(iface);
 542         struct i2400m *i2400m = &i2400mu->i2400m;
 543
 544         d_fnstart(3, dev, "(iface %p)\n", iface);
 545         if (i2400m->updown == 0) {
 546                 d_printf(1, dev, "fw was down, no resume neeed\n");
 547                 goto out;
 548         }
 549         d_printf(1, dev, "fw was up, resuming\n");
 550         i2400mu_notification_setup(i2400mu);
 551         /* USB has flow control, so we don't need to give it time to
 552          * come back; otherwise, we'd use something like a get-state
 553          * command... */
 554 out:
 555         d_fnend(3, dev, "(iface %p) = %d\n", iface, ret);
 556         return ret;
 557 }
 558
 559
 560 static
 561 struct usb_device_id i2400mu_id_table[] = {
 562         { USB_DEVICE(0x8086, 0x0181) },
 563         { USB_DEVICE(0x8086, 0x1403) },
 564         { USB_DEVICE(0x8086, 0x1405) },
 565         { USB_DEVICE(0x8086, 0x0180) },
 566         { USB_DEVICE(0x8086, 0x0182) },
 567         { USB_DEVICE(0x8086, 0x1406) },
 568         { USB_DEVICE(0x8086, 0x1403) },
 569         { },
 570 };
 571 MODULE_DEVICE_TABLE(usb, i2400mu_id_table);
 572
 573
 574 static
 575 struct usb_driver i2400mu_driver = {
 576         .name = KBUILD_MODNAME,
 577         .suspend = i2400mu_suspend,
 578         .resume = i2400mu_resume,
 579         .probe = i2400mu_probe,
 580         .disconnect = i2400mu_disconnect,
 581         .id_table = i2400mu_id_table,
 582         .supports_autosuspend = 1,
 583 };
 584
 585 static
 586 int __init i2400mu_driver_init(void)
 587 {
 588         return usb_register(&i2400mu_driver);
 589 }
 590 module_init(i2400mu_driver_init);
 591
 592
 593 static
 594 void __exit i2400mu_driver_exit(void)
 595 {
 596         flush_scheduled_work(); /* for the stuff we schedule from sysfs.c */
 597         usb_deregister(&i2400mu_driver);
 598 }
 599 module_exit(i2400mu_driver_exit);
 600
 601 MODULE_AUTHOR("Intel Corporation <linux-wimax@intel.com>");
 602 MODULE_DESCRIPTION("Intel 2400M WiMAX networking for USB");
 603 MODULE_LICENSE("GPL");
 604 MODULE_FIRMWARE(I2400MU_FW_FILE_NAME_v1_4);
 605 MODULE_FIRMWARE(I2400MU_FW_FILE_NAME_v1_3);