drivers/net/usb/qmi_wwan.c

   1 /*
   2  * Copyright (c) 2012  Bjørn Mork <bjorn@mork.no>
   3  *
   4  * The probing code is heavily inspired by cdc_ether, which is:
   5  * Copyright (C) 2003-2005 by David Brownell
   6  * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/netdevice.h>
  15 #include <linux/ethtool.h>
  16 #include <linux/mii.h>
  17 #include <linux/usb.h>
  18 #include <linux/usb/cdc.h>
  19 #include <linux/usb/usbnet.h>
  20 #include <linux/usb/cdc-wdm.h>
  21
  22 /* This driver supports wwan (3G/LTE/?) devices using a vendor
  23  * specific management protocol called Qualcomm MSM Interface (QMI) -
  24  * in addition to the more common AT commands over serial interface
  25  * management
  26  *
  27  * QMI is wrapped in CDC, using CDC encapsulated commands on the
  28  * control ("master") interface of a two-interface CDC Union
  29  * resembling standard CDC ECM.  The devices do not use the control
  30  * interface for any other CDC messages.  Most likely because the
  31  * management protocol is used in place of the standard CDC
  32  * notifications NOTIFY_NETWORK_CONNECTION and NOTIFY_SPEED_CHANGE
  33  *
  34  * Alternatively, control and data functions can be combined in a
  35  * single USB interface.
  36  *
  37  * Handling a protocol like QMI is out of the scope for any driver.
  38  * It is exported as a character device using the cdc-wdm driver as
  39  * a subdriver, enabling userspace applications ("modem managers") to
  40  * handle it.
  41  *
  42  * These devices may alternatively/additionally be configured using AT
  43  * commands on a serial interface
  44  */
  45
  46 /* driver specific data */
  47 struct qmi_wwan_state {
  48         struct usb_driver *subdriver;
  49         atomic_t pmcount;
  50         unsigned long unused;
  51         struct usb_interface *control;
  52         struct usb_interface *data;
  53 };
  54
  55 /* using a counter to merge subdriver requests with our own into a combined state */
  56 static int qmi_wwan_manage_power(struct usbnet *dev, int on)
  57 {
  58         struct qmi_wwan_state *info = (void *)&dev->data;
  59         int rv = 0;
  60
  61         dev_dbg(&dev->intf->dev, "%s() pmcount=%d, on=%d\n", __func__, atomic_read(&info->pmcount), on);
  62
  63         if ((on && atomic_add_return(1, &info->pmcount) == 1) || (!on && atomic_dec_and_test(&info->pmcount))) {
  64                 /* need autopm_get/put here to ensure the usbcore sees the new value */
  65                 rv = usb_autopm_get_interface(dev->intf);
  66                 if (rv < 0)
  67                         goto err;
  68                 dev->intf->needs_remote_wakeup = on;
  69                 usb_autopm_put_interface(dev->intf);
  70         }
  71 err:
  72         return rv;
  73 }
  74
  75 static int qmi_wwan_cdc_wdm_manage_power(struct usb_interface *intf, int on)
  76 {
  77         struct usbnet *dev = usb_get_intfdata(intf);
  78
  79         /* can be called while disconnecting */
  80         if (!dev)
  81                 return 0;
  82         return qmi_wwan_manage_power(dev, on);
  83 }
  84
  85 /* collect all three endpoints and register subdriver */
  86 static int qmi_wwan_register_subdriver(struct usbnet *dev)
  87 {
  88         int rv;
  89         struct usb_driver *subdriver = NULL;
  90         struct qmi_wwan_state *info = (void *)&dev->data;
  91
  92         /* collect bulk endpoints */
  93         rv = usbnet_get_endpoints(dev, info->data);
  94         if (rv < 0)
  95                 goto err;
  96
  97         /* update status endpoint if separate control interface */
  98         if (info->control != info->data)
  99                 dev->status = &info->control->cur_altsetting->endpoint[0];
 100
 101         /* require interrupt endpoint for subdriver */
 102         if (!dev->status) {
 103                 rv = -EINVAL;
 104                 goto err;
 105         }
 106
 107         /* for subdriver power management */
 108         atomic_set(&info->pmcount, 0);
 109
 110         /* register subdriver */
 111         subdriver = usb_cdc_wdm_register(info->control, &dev->status->desc, 512, &qmi_wwan_cdc_wdm_manage_power);
 112         if (IS_ERR(subdriver)) {
 113                 dev_err(&info->control->dev, "subdriver registration failed\n");
 114                 rv = PTR_ERR(subdriver);
 115                 goto err;
 116         }
 117
 118         /* prevent usbnet from using status endpoint */
 119         dev->status = NULL;
 120
 121         /* save subdriver struct for suspend/resume wrappers */
 122         info->subdriver = subdriver;
 123
 124 err:
 125         return rv;
 126 }
 127
 128 static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
 129 {
 130         int status = -1;
 131         u8 *buf = intf->cur_altsetting->extra;
 132         int len = intf->cur_altsetting->extralen;
 133         struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
 134         struct usb_cdc_union_desc *cdc_union = NULL;
 135         struct usb_cdc_ether_desc *cdc_ether = NULL;
 136         u32 found = 0;
 137         struct usb_driver *driver = driver_of(intf);
 138         struct qmi_wwan_state *info = (void *)&dev->data;
 139
 140         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) < sizeof(struct qmi_wwan_state)));
 141
 142         /* require a single interrupt status endpoint for subdriver */
 143         if (intf->cur_altsetting->desc.bNumEndpoints != 1)
 144                 goto err;
 145
 146         while (len > 3) {
 147                 struct usb_descriptor_header *h = (void *)buf;
 148
 149                 /* ignore any misplaced descriptors */
 150                 if (h->bDescriptorType != USB_DT_CS_INTERFACE)
 151                         goto next_desc;
 152
 153                 /* buf[2] is CDC descriptor subtype */
 154                 switch (buf[2]) {
 155                 case USB_CDC_HEADER_TYPE:
 156                         if (found & 1 << USB_CDC_HEADER_TYPE) {
 157                                 dev_dbg(&intf->dev, "extra CDC header\n");
 158                                 goto err;
 159                         }
 160                         if (h->bLength != sizeof(struct usb_cdc_header_desc)) {
 161                                 dev_dbg(&intf->dev, "CDC header len %u\n", h->bLength);
 162                                 goto err;
 163                         }
 164                         break;
 165                 case USB_CDC_UNION_TYPE:
 166                         if (found & 1 << USB_CDC_UNION_TYPE) {
 167                                 dev_dbg(&intf->dev, "extra CDC union\n");
 168                                 goto err;
 169                         }
 170                         if (h->bLength != sizeof(struct usb_cdc_union_desc)) {
 171                                 dev_dbg(&intf->dev, "CDC union len %u\n", h->bLength);
 172                                 goto err;
 173                         }
 174                         cdc_union = (struct usb_cdc_union_desc *)buf;
 175                         break;
 176                 case USB_CDC_ETHERNET_TYPE:
 177                         if (found & 1 << USB_CDC_ETHERNET_TYPE) {
 178                                 dev_dbg(&intf->dev, "extra CDC ether\n");
 179                                 goto err;
 180                         }
 181                         if (h->bLength != sizeof(struct usb_cdc_ether_desc)) {
 182                                 dev_dbg(&intf->dev, "CDC ether len %u\n",  h->bLength);
 183                                 goto err;
 184                         }
 185                         cdc_ether = (struct usb_cdc_ether_desc *)buf;
 186                         break;
 187                 }
 188
 189                 /*
 190                  * Remember which CDC functional descriptors we've seen.  Works
 191                  * for all types we care about, of which USB_CDC_ETHERNET_TYPE
 192                  * (0x0f) is the highest numbered
 193                  */
 194                 if (buf[2] < 32)
 195                         found |= 1 << buf[2];
 196
 197 next_desc:
 198                 len -= h->bLength;
 199                 buf += h->bLength;
 200         }
 201
 202         /* did we find all the required ones? */
 203         if (!(found & (1 << USB_CDC_HEADER_TYPE)) ||
 204             !(found & (1 << USB_CDC_UNION_TYPE))) {
 205                 dev_err(&intf->dev, "CDC functional descriptors missing\n");
 206                 goto err;
 207         }
 208
 209         /* verify CDC Union */
 210         if (desc->bInterfaceNumber != cdc_union->bMasterInterface0) {
 211                 dev_err(&intf->dev, "bogus CDC Union: master=%u\n", cdc_union->bMasterInterface0);
 212                 goto err;
 213         }
 214
 215         /* need to save these for unbind */
 216         info->control = intf;
 217         info->data = usb_ifnum_to_if(dev->udev, cdc_union->bSlaveInterface0);
 218         if (!info->data) {
 219                 dev_err(&intf->dev, "bogus CDC Union: slave=%u\n", cdc_union->bSlaveInterface0);
 220                 goto err;
 221         }
 222
 223         /* errors aren't fatal - we can live with the dynamic address */
 224         if (cdc_ether) {
 225                 dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
 226                 usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
 227         }
 228
 229         /* claim data interface and set it up */
 230         status = usb_driver_claim_interface(driver, info->data, dev);
 231         if (status < 0)
 232                 goto err;
 233
 234         status = qmi_wwan_register_subdriver(dev);
 235         if (status < 0) {
 236                 usb_set_intfdata(info->data, NULL);
 237                 usb_driver_release_interface(driver, info->data);
 238         }
 239
 240 err:
 241         return status;
 242 }
 243
 244 /* Some devices combine the "control" and "data" functions into a
 245  * single interface with all three endpoints: interrupt + bulk in and
 246  * out
 247  */
 248 static int qmi_wwan_bind_shared(struct usbnet *dev, struct usb_interface *intf)
 249 {
 250         struct qmi_wwan_state *info = (void *)&dev->data;
 251
 252         /*  control and data is shared */
 253         info->control = intf;
 254         info->data = intf;
 255         return qmi_wwan_register_subdriver(dev);
 256 }
 257
 258 static void qmi_wwan_unbind(struct usbnet *dev, struct usb_interface *intf)
 259 {
 260         struct qmi_wwan_state *info = (void *)&dev->data;
 261         struct usb_driver *driver = driver_of(intf);
 262         struct usb_interface *other;
 263
 264         if (info->subdriver && info->subdriver->disconnect)
 265                 info->subdriver->disconnect(info->control);
 266
 267         /* allow user to unbind using either control or data */
 268         if (intf == info->control)
 269                 other = info->data;
 270         else
 271                 other = info->control;
 272
 273         /* only if not shared */
 274         if (other && intf != other) {
 275                 usb_set_intfdata(other, NULL);
 276                 usb_driver_release_interface(driver, other);
 277         }
 278
 279         info->subdriver = NULL;
 280         info->data = NULL;
 281         info->control = NULL;
 282 }
 283
 284 /* suspend/resume wrappers calling both usbnet and the cdc-wdm
 285  * subdriver if present.
 286  *
 287  * NOTE: cdc-wdm also supports pre/post_reset, but we cannot provide
 288  * wrappers for those without adding usbnet reset support first.
 289  */
 290 static int qmi_wwan_suspend(struct usb_interface *intf, pm_message_t message)
 291 {
 292         struct usbnet *dev = usb_get_intfdata(intf);
 293         struct qmi_wwan_state *info = (void *)&dev->data;
 294         int ret;
 295
 296         ret = usbnet_suspend(intf, message);
 297         if (ret < 0)
 298                 goto err;
 299
 300         if (info->subdriver && info->subdriver->suspend)
 301                 ret = info->subdriver->suspend(intf, message);
 302         if (ret < 0)
 303                 usbnet_resume(intf);
 304 err:
 305         return ret;
 306 }
 307
 308 static int qmi_wwan_resume(struct usb_interface *intf)
 309 {
 310         struct usbnet *dev = usb_get_intfdata(intf);
 311         struct qmi_wwan_state *info = (void *)&dev->data;
 312         int ret = 0;
 313
 314         if (info->subdriver && info->subdriver->resume)
 315                 ret = info->subdriver->resume(intf);
 316         if (ret < 0)
 317                 goto err;
 318         ret = usbnet_resume(intf);
 319         if (ret < 0 && info->subdriver && info->subdriver->resume && info->subdriver->suspend)
 320                 info->subdriver->suspend(intf, PMSG_SUSPEND);
 321 err:
 322         return ret;
 323 }
 324
 325 static const struct driver_info qmi_wwan_info = {
 326         .description    = "WWAN/QMI device",
 327         .flags          = FLAG_WWAN,
 328         .bind           = qmi_wwan_bind,
 329         .unbind         = qmi_wwan_unbind,
 330         .manage_power   = qmi_wwan_manage_power,
 331 };
 332
 333 static const struct driver_info qmi_wwan_shared = {
 334         .description    = "WWAN/QMI device",
 335         .flags          = FLAG_WWAN,
 336         .bind           = qmi_wwan_bind_shared,
 337         .unbind         = qmi_wwan_unbind,
 338         .manage_power   = qmi_wwan_manage_power,
 339 };
 340
 341 #define HUAWEI_VENDOR_ID        0x12D1
 342
 343 /* map QMI/wwan function by a fixed interface number */
 344 #define QMI_FIXED_INTF(vend, prod, num) \
 345         USB_DEVICE_INTERFACE_NUMBER(vend, prod, num), \
 346         .driver_info = (unsigned long)&qmi_wwan_shared
 347
 348 /* Gobi 1000 QMI/wwan interface number is 3 according to qcserial */
 349 #define QMI_GOBI1K_DEVICE(vend, prod) \
 350         QMI_FIXED_INTF(vend, prod, 3)
 351
 352 /* Gobi 2000/3000 QMI/wwan interface number is 0 according to qcserial */
 353 #define QMI_GOBI_DEVICE(vend, prod) \
 354         QMI_FIXED_INTF(vend, prod, 0)
 355
 356 static const struct usb_device_id products[] = {
 357         /* 1. CDC ECM like devices match on the control interface */
 358         {       /* Huawei E392, E398 and possibly others sharing both device id and more... */
 359                 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 9),
 360                 .driver_info        = (unsigned long)&qmi_wwan_info,
 361         },
 362         {       /* Vodafone/Huawei K5005 (12d1:14c8) and similar modems */
 363                 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 57),
 364                 .driver_info        = (unsigned long)&qmi_wwan_info,
 365         },
 366
 367         /* 2. Combined interface devices matching on class+protocol */
 368         {       /* Huawei E392, E398 and possibly others in "Windows mode" */
 369                 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 17),
 370                 .driver_info        = (unsigned long)&qmi_wwan_shared,
 371         },
 372         {       /* Pantech UML290 */
 373                 USB_DEVICE_AND_INTERFACE_INFO(0x106c, 0x3718, USB_CLASS_VENDOR_SPEC, 0xf0, 0xff),
 374                 .driver_info        = (unsigned long)&qmi_wwan_shared,
 375         },
 376         {       /* Pantech UML290 - newer firmware */
 377                 USB_DEVICE_AND_INTERFACE_INFO(0x106c, 0x3718, USB_CLASS_VENDOR_SPEC, 0xf1, 0xff),
 378                 .driver_info        = (unsigned long)&qmi_wwan_shared,
 379         },
 380
 381         /* 3. Combined interface devices matching on interface number */
 382         {QMI_FIXED_INTF(0x19d2, 0x0055, 1)},    /* ZTE (Vodafone) K3520-Z */
 383         {QMI_FIXED_INTF(0x19d2, 0x0063, 4)},    /* ZTE (Vodafone) K3565-Z */
 384         {QMI_FIXED_INTF(0x19d2, 0x0104, 4)},    /* ZTE (Vodafone) K4505-Z */
 385         {QMI_FIXED_INTF(0x19d2, 0x0167, 4)},    /* ZTE MF820D */
 386         {QMI_FIXED_INTF(0x19d2, 0x0326, 4)},    /* ZTE MF821D */
 387         {QMI_FIXED_INTF(0x19d2, 0x1008, 4)},    /* ZTE (Vodafone) K3570-Z */
 388         {QMI_FIXED_INTF(0x19d2, 0x1010, 4)},    /* ZTE (Vodafone) K3571-Z */
 389         {QMI_FIXED_INTF(0x19d2, 0x1018, 3)},    /* ZTE (Vodafone) K5006-Z */
 390         {QMI_FIXED_INTF(0x19d2, 0x1402, 2)},    /* ZTE MF60 */
 391         {QMI_FIXED_INTF(0x19d2, 0x2002, 4)},    /* ZTE (Vodafone) K3765-Z */
 392         {QMI_FIXED_INTF(0x0f3d, 0x68a2, 8)},    /* Sierra Wireless MC7700 */
 393         {QMI_FIXED_INTF(0x114f, 0x68a2, 8)},    /* Sierra Wireless MC7750 */
 394         {QMI_FIXED_INTF(0x1199, 0x68a2, 8)},    /* Sierra Wireless MC7710 in QMI mode */
 395         {QMI_FIXED_INTF(0x1199, 0x68a2, 19)},   /* Sierra Wireless MC7710 in QMI mode */
 396         {QMI_FIXED_INTF(0x1199, 0x901c, 8)},    /* Sierra Wireless EM7700 */
 397
 398         /* 4. Gobi 1000 devices */
 399         {QMI_GOBI1K_DEVICE(0x05c6, 0x9212)},    /* Acer Gobi Modem Device */
 400         {QMI_GOBI1K_DEVICE(0x03f0, 0x1f1d)},    /* HP un2400 Gobi Modem Device */
 401         {QMI_GOBI1K_DEVICE(0x03f0, 0x371d)},    /* HP un2430 Mobile Broadband Module */
 402         {QMI_GOBI1K_DEVICE(0x04da, 0x250d)},    /* Panasonic Gobi Modem device */
 403         {QMI_GOBI1K_DEVICE(0x413c, 0x8172)},    /* Dell Gobi Modem device */
 404         {QMI_GOBI1K_DEVICE(0x1410, 0xa001)},    /* Novatel Gobi Modem device */
 405         {QMI_GOBI1K_DEVICE(0x0b05, 0x1776)},    /* Asus Gobi Modem device */
 406         {QMI_GOBI1K_DEVICE(0x19d2, 0xfff3)},    /* ONDA Gobi Modem device */
 407         {QMI_GOBI1K_DEVICE(0x05c6, 0x9001)},    /* Generic Gobi Modem device */
 408         {QMI_GOBI1K_DEVICE(0x05c6, 0x9002)},    /* Generic Gobi Modem device */
 409         {QMI_GOBI1K_DEVICE(0x05c6, 0x9202)},    /* Generic Gobi Modem device */
 410         {QMI_GOBI1K_DEVICE(0x05c6, 0x9203)},    /* Generic Gobi Modem device */
 411         {QMI_GOBI1K_DEVICE(0x05c6, 0x9222)},    /* Generic Gobi Modem device */
 412         {QMI_GOBI1K_DEVICE(0x05c6, 0x9009)},    /* Generic Gobi Modem device */
 413
 414         /* 5. Gobi 2000 and 3000 devices */
 415         {QMI_GOBI_DEVICE(0x413c, 0x8186)},      /* Dell Gobi 2000 Modem device (N0218, VU936) */
 416         {QMI_GOBI_DEVICE(0x05c6, 0x920b)},      /* Generic Gobi 2000 Modem device */
 417         {QMI_GOBI_DEVICE(0x05c6, 0x9225)},      /* Sony Gobi 2000 Modem device (N0279, VU730) */
 418         {QMI_GOBI_DEVICE(0x05c6, 0x9245)},      /* Samsung Gobi 2000 Modem device (VL176) */
 419         {QMI_GOBI_DEVICE(0x03f0, 0x251d)},      /* HP Gobi 2000 Modem device (VP412) */
 420         {QMI_GOBI_DEVICE(0x05c6, 0x9215)},      /* Acer Gobi 2000 Modem device (VP413) */
 421         {QMI_GOBI_DEVICE(0x05c6, 0x9265)},      /* Asus Gobi 2000 Modem device (VR305) */
 422         {QMI_GOBI_DEVICE(0x05c6, 0x9235)},      /* Top Global Gobi 2000 Modem device (VR306) */
 423         {QMI_GOBI_DEVICE(0x05c6, 0x9275)},      /* iRex Technologies Gobi 2000 Modem device (VR307) */
 424         {QMI_GOBI_DEVICE(0x1199, 0x68a5)},      /* Sierra Wireless Modem */
 425         {QMI_GOBI_DEVICE(0x1199, 0x68a9)},      /* Sierra Wireless Modem */
 426         {QMI_GOBI_DEVICE(0x1199, 0x9001)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
 427         {QMI_GOBI_DEVICE(0x1199, 0x9002)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
 428         {QMI_GOBI_DEVICE(0x1199, 0x9003)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
 429         {QMI_GOBI_DEVICE(0x1199, 0x9004)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
 430         {QMI_GOBI_DEVICE(0x1199, 0x9005)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
 431         {QMI_GOBI_DEVICE(0x1199, 0x9006)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
 432         {QMI_GOBI_DEVICE(0x1199, 0x9007)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
 433         {QMI_GOBI_DEVICE(0x1199, 0x9008)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
 434         {QMI_GOBI_DEVICE(0x1199, 0x9009)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
 435         {QMI_GOBI_DEVICE(0x1199, 0x900a)},      /* Sierra Wireless Gobi 2000 Modem device (VT773) */
 436         {QMI_GOBI_DEVICE(0x1199, 0x9011)},      /* Sierra Wireless Gobi 2000 Modem device (MC8305) */
 437         {QMI_FIXED_INTF(0x1199, 0x9011, 5)},    /* alternate interface number!? */
 438         {QMI_GOBI_DEVICE(0x16d8, 0x8002)},      /* CMDTech Gobi 2000 Modem device (VU922) */
 439         {QMI_GOBI_DEVICE(0x05c6, 0x9205)},      /* Gobi 2000 Modem device */
 440         {QMI_GOBI_DEVICE(0x1199, 0x9013)},      /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
 441         {QMI_GOBI_DEVICE(0x1199, 0x9015)},      /* Sierra Wireless Gobi 3000 Modem device */
 442         {QMI_GOBI_DEVICE(0x1199, 0x9019)},      /* Sierra Wireless Gobi 3000 Modem device */
 443         {QMI_GOBI_DEVICE(0x1199, 0x901b)},      /* Sierra Wireless MC7770 */
 444
 445         { }                                     /* END */
 446 };
 447 MODULE_DEVICE_TABLE(usb, products);
 448
 449 static int qmi_wwan_probe(struct usb_interface *intf, const struct usb_device_id *prod)
 450 {
 451         struct usb_device_id *id = (struct usb_device_id *)prod;
 452
 453         /* Workaround to enable dynamic IDs.  This disables usbnet
 454          * blacklisting functionality.  Which, if required, can be
 455          * reimplemented here by using a magic "blacklist" value
 456          * instead of 0 in the static device id table
 457          */
 458         if (!id->driver_info) {
 459                 dev_dbg(&intf->dev, "setting defaults for dynamic device id\n");
 460                 id->driver_info = (unsigned long)&qmi_wwan_shared;
 461         }
 462
 463         return usbnet_probe(intf, id);
 464 }
 465
 466 static struct usb_driver qmi_wwan_driver = {
 467         .name                 = "qmi_wwan",
 468         .id_table             = products,
 469         .probe                = qmi_wwan_probe,
 470         .disconnect           = usbnet_disconnect,
 471         .suspend              = qmi_wwan_suspend,
 472         .resume               = qmi_wwan_resume,
 473         .reset_resume         = qmi_wwan_resume,
 474         .supports_autosuspend = 1,
 475         .disable_hub_initiated_lpm = 1,
 476 };
 477
 478 module_usb_driver(qmi_wwan_driver);
 479
 480 MODULE_AUTHOR("Bjørn Mork <bjorn@mork.no>");
 481 MODULE_DESCRIPTION("Qualcomm MSM Interface (QMI) WWAN driver");
 482 MODULE_LICENSE("GPL");