summaryrefslogtreecommitdiff
path: root/drivers/net/usb/qmi_wwan.c
blob: b1ba68f1a049202dac23f6fc4b9f944f8526cb71 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
/*
 * Copyright (c) 2012  Bjørn Mork <bjorn@mork.no>
 *
 * The probing code is heavily inspired by cdc_ether, which is:
 * Copyright (C) 2003-2005 by David Brownell
 * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/usb/cdc.h>
#include <linux/usb/usbnet.h>
#include <linux/usb/cdc-wdm.h>

/* This driver supports wwan (3G/LTE/?) devices using a vendor
 * specific management protocol called Qualcomm MSM Interface (QMI) -
 * in addition to the more common AT commands over serial interface
 * management
 *
 * QMI is wrapped in CDC, using CDC encapsulated commands on the
 * control ("master") interface of a two-interface CDC Union
 * resembling standard CDC ECM.  The devices do not use the control
 * interface for any other CDC messages.  Most likely because the
 * management protocol is used in place of the standard CDC
 * notifications NOTIFY_NETWORK_CONNECTION and NOTIFY_SPEED_CHANGE
 *
 * Alternatively, control and data functions can be combined in a
 * single USB interface.
 *
 * Handling a protocol like QMI is out of the scope for any driver.
 * It is exported as a character device using the cdc-wdm driver as
 * a subdriver, enabling userspace applications ("modem managers") to
 * handle it.
 *
 * These devices may alternatively/additionally be configured using AT
 * commands on a serial interface
 */

/* driver specific data */
struct qmi_wwan_state {
	struct usb_driver *subdriver;
	atomic_t pmcount;
	unsigned long unused;
	struct usb_interface *control;
	struct usb_interface *data;
};

/* using a counter to merge subdriver requests with our own into a combined state */
static int qmi_wwan_manage_power(struct usbnet *dev, int on)
{
	struct qmi_wwan_state *info = (void *)&dev->data;
	int rv = 0;

	dev_dbg(&dev->intf->dev, "%s() pmcount=%d, on=%d\n", __func__, atomic_read(&info->pmcount), on);

	if ((on && atomic_add_return(1, &info->pmcount) == 1) || (!on && atomic_dec_and_test(&info->pmcount))) {
		/* need autopm_get/put here to ensure the usbcore sees the new value */
		rv = usb_autopm_get_interface(dev->intf);
		if (rv < 0)
			goto err;
		dev->intf->needs_remote_wakeup = on;
		usb_autopm_put_interface(dev->intf);
	}
err:
	return rv;
}

static int qmi_wwan_cdc_wdm_manage_power(struct usb_interface *intf, int on)
{
	struct usbnet *dev = usb_get_intfdata(intf);

	/* can be called while disconnecting */
	if (!dev)
		return 0;
	return qmi_wwan_manage_power(dev, on);
}

/* collect all three endpoints and register subdriver */
static int qmi_wwan_register_subdriver(struct usbnet *dev)
{
	int rv;
	struct usb_driver *subdriver = NULL;
	struct qmi_wwan_state *info = (void *)&dev->data;

	/* collect bulk endpoints */
	rv = usbnet_get_endpoints(dev, info->data);
	if (rv < 0)
		goto err;

	/* update status endpoint if separate control interface */
	if (info->control != info->data)
		dev->status = &info->control->cur_altsetting->endpoint[0];

	/* require interrupt endpoint for subdriver */
	if (!dev->status) {
		rv = -EINVAL;
		goto err;
	}

	/* for subdriver power management */
	atomic_set(&info->pmcount, 0);

	/* register subdriver */
	subdriver = usb_cdc_wdm_register(info->control, &dev->status->desc, 512, &qmi_wwan_cdc_wdm_manage_power);
	if (IS_ERR(subdriver)) {
		dev_err(&info->control->dev, "subdriver registration failed\n");
		rv = PTR_ERR(subdriver);
		goto err;
	}

	/* prevent usbnet from using status endpoint */
	dev->status = NULL;

	/* save subdriver struct for suspend/resume wrappers */
	info->subdriver = subdriver;

err:
	return rv;
}

static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
{
	int status = -1;
	u8 *buf = intf->cur_altsetting->extra;
	int len = intf->cur_altsetting->extralen;
	struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
	struct usb_cdc_union_desc *cdc_union = NULL;
	struct usb_cdc_ether_desc *cdc_ether = NULL;
	u32 found = 0;
	struct usb_driver *driver = driver_of(intf);
	struct qmi_wwan_state *info = (void *)&dev->data;

	BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) < sizeof(struct qmi_wwan_state)));

	/* require a single interrupt status endpoint for subdriver */
	if (intf->cur_altsetting->desc.bNumEndpoints != 1)
		goto err;

	while (len > 3) {
		struct usb_descriptor_header *h = (void *)buf;

		/* ignore any misplaced descriptors */
		if (h->bDescriptorType != USB_DT_CS_INTERFACE)
			goto next_desc;

		/* buf[2] is CDC descriptor subtype */
		switch (buf[2]) {
		case USB_CDC_HEADER_TYPE:
			if (found & 1 << USB_CDC_HEADER_TYPE) {
				dev_dbg(&intf->dev, "extra CDC header\n");
				goto err;
			}
			if (h->bLength != sizeof(struct usb_cdc_header_desc)) {
				dev_dbg(&intf->dev, "CDC header len %u\n", h->bLength);
				goto err;
			}
			break;
		case USB_CDC_UNION_TYPE:
			if (found & 1 << USB_CDC_UNION_TYPE) {
				dev_dbg(&intf->dev, "extra CDC union\n");
				goto err;
			}
			if (h->bLength != sizeof(struct usb_cdc_union_desc)) {
				dev_dbg(&intf->dev, "CDC union len %u\n", h->bLength);
				goto err;
			}
			cdc_union = (struct usb_cdc_union_desc *)buf;
			break;
		case USB_CDC_ETHERNET_TYPE:
			if (found & 1 << USB_CDC_ETHERNET_TYPE) {
				dev_dbg(&intf->dev, "extra CDC ether\n");
				goto err;
			}
			if (h->bLength != sizeof(struct usb_cdc_ether_desc)) {
				dev_dbg(&intf->dev, "CDC ether len %u\n",  h->bLength);
				goto err;
			}
			cdc_ether = (struct usb_cdc_ether_desc *)buf;
			break;
		}

		/*
		 * Remember which CDC functional descriptors we've seen.  Works
		 * for all types we care about, of which USB_CDC_ETHERNET_TYPE
		 * (0x0f) is the highest numbered
		 */
		if (buf[2] < 32)
			found |= 1 << buf[2];

next_desc:
		len -= h->bLength;
		buf += h->bLength;
	}

	/* did we find all the required ones? */
	if (!(found & (1 << USB_CDC_HEADER_TYPE)) ||
	    !(found & (1 << USB_CDC_UNION_TYPE))) {
		dev_err(&intf->dev, "CDC functional descriptors missing\n");
		goto err;
	}

	/* verify CDC Union */
	if (desc->bInterfaceNumber != cdc_union->bMasterInterface0) {
		dev_err(&intf->dev, "bogus CDC Union: master=%u\n", cdc_union->bMasterInterface0);
		goto err;
	}

	/* need to save these for unbind */
	info->control = intf;
	info->data = usb_ifnum_to_if(dev->udev,	cdc_union->bSlaveInterface0);
	if (!info->data) {
		dev_err(&intf->dev, "bogus CDC Union: slave=%u\n", cdc_union->bSlaveInterface0);
		goto err;
	}

	/* errors aren't fatal - we can live with the dynamic address */
	if (cdc_ether) {
		dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
		usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
	}

	/* claim data interface and set it up */
	status = usb_driver_claim_interface(driver, info->data, dev);
	if (status < 0)
		goto err;

	status = qmi_wwan_register_subdriver(dev);
	if (status < 0) {
		usb_set_intfdata(info->data, NULL);
		usb_driver_release_interface(driver, info->data);
	}

err:
	return status;
}

/* Some devices combine the "control" and "data" functions into a
 * single interface with all three endpoints: interrupt + bulk in and
 * out
 */
static int qmi_wwan_bind_shared(struct usbnet *dev, struct usb_interface *intf)
{
	struct qmi_wwan_state *info = (void *)&dev->data;

	/*  control and data is shared */
	info->control = intf;
	info->data = intf;
	return qmi_wwan_register_subdriver(dev);
}

static void qmi_wwan_unbind(struct usbnet *dev, struct usb_interface *intf)
{
	struct qmi_wwan_state *info = (void *)&dev->data;
	struct usb_driver *driver = driver_of(intf);
	struct usb_interface *other;

	if (info->subdriver && info->subdriver->disconnect)
		info->subdriver->disconnect(info->control);

	/* allow user to unbind using either control or data */
	if (intf == info->control)
		other = info->data;
	else
		other = info->control;

	/* only if not shared */
	if (other && intf != other) {
		usb_set_intfdata(other, NULL);
		usb_driver_release_interface(driver, other);
	}

	info->subdriver = NULL;
	info->data = NULL;
	info->control = NULL;
}

/* suspend/resume wrappers calling both usbnet and the cdc-wdm
 * subdriver if present.
 *
 * NOTE: cdc-wdm also supports pre/post_reset, but we cannot provide
 * wrappers for those without adding usbnet reset support first.
 */
static int qmi_wwan_suspend(struct usb_interface *intf, pm_message_t message)
{
	struct usbnet *dev = usb_get_intfdata(intf);
	struct qmi_wwan_state *info = (void *)&dev->data;
	int ret;

	ret = usbnet_suspend(intf, message);
	if (ret < 0)
		goto err;

	if (intf == info->control && info->subdriver && info->subdriver->suspend)
		ret = info->subdriver->suspend(intf, message);
	if (ret < 0)
		usbnet_resume(intf);
err:
	return ret;
}

static int qmi_wwan_resume(struct usb_interface *intf)
{
	struct usbnet *dev = usb_get_intfdata(intf);
	struct qmi_wwan_state *info = (void *)&dev->data;
	int ret = 0;
	bool callsub = (intf == info->control && info->subdriver && info->subdriver->resume);

	if (callsub)
		ret = info->subdriver->resume(intf);
	if (ret < 0)
		goto err;
	ret = usbnet_resume(intf);
	if (ret < 0 && callsub && info->subdriver->suspend)
		info->subdriver->suspend(intf, PMSG_SUSPEND);
err:
	return ret;
}

static const struct driver_info	qmi_wwan_info = {
	.description	= "WWAN/QMI device",
	.flags		= FLAG_WWAN,
	.bind		= qmi_wwan_bind,
	.unbind		= qmi_wwan_unbind,
	.manage_power	= qmi_wwan_manage_power,
};

static const struct driver_info	qmi_wwan_shared = {
	.description	= "WWAN/QMI device",
	.flags		= FLAG_WWAN,
	.bind		= qmi_wwan_bind_shared,
	.unbind		= qmi_wwan_unbind,
	.manage_power	= qmi_wwan_manage_power,
};

#define HUAWEI_VENDOR_ID	0x12D1

/* map QMI/wwan function by a fixed interface number */
#define QMI_FIXED_INTF(vend, prod, num) \
	USB_DEVICE_INTERFACE_NUMBER(vend, prod, num), \
	.driver_info = (unsigned long)&qmi_wwan_shared

/* Gobi 1000 QMI/wwan interface number is 3 according to qcserial */
#define QMI_GOBI1K_DEVICE(vend, prod) \
	QMI_FIXED_INTF(vend, prod, 3)

/* Gobi 2000/3000 QMI/wwan interface number is 0 according to qcserial */
#define QMI_GOBI_DEVICE(vend, prod) \
	QMI_FIXED_INTF(vend, prod, 0)

static const struct usb_device_id products[] = {
	/* 1. CDC ECM like devices match on the control interface */
	{	/* Huawei E392, E398 and possibly others sharing both device id and more... */
		USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 9),
		.driver_info        = (unsigned long)&qmi_wwan_info,
	},
	{	/* Vodafone/Huawei K5005 (12d1:14c8) and similar modems */
		USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 57),
		.driver_info        = (unsigned long)&qmi_wwan_info,
	},

	/* 2. Combined interface devices matching on class+protocol */
	{	/* Huawei E392, E398 and possibly others in "Windows mode" */
		USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_VENDOR_SPEC, 1, 17),
		.driver_info        = (unsigned long)&qmi_wwan_shared,
	},
	{	/* Pantech UML290 */
		USB_DEVICE_AND_INTERFACE_INFO(0x106c, 0x3718, USB_CLASS_VENDOR_SPEC, 0xf0, 0xff),
		.driver_info        = (unsigned long)&qmi_wwan_shared,
	},
	{	/* Pantech UML290 - newer firmware */
		USB_DEVICE_AND_INTERFACE_INFO(0x106c, 0x3718, USB_CLASS_VENDOR_SPEC, 0xf1, 0xff),
		.driver_info        = (unsigned long)&qmi_wwan_shared,
	},

	/* 3. Combined interface devices matching on interface number */
	{QMI_FIXED_INTF(0x19d2, 0x0055, 1)},	/* ZTE (Vodafone) K3520-Z */
	{QMI_FIXED_INTF(0x19d2, 0x0063, 4)},	/* ZTE (Vodafone) K3565-Z */
	{QMI_FIXED_INTF(0x19d2, 0x0104, 4)},	/* ZTE (Vodafone) K4505-Z */
	{QMI_FIXED_INTF(0x19d2, 0x0167, 4)},	/* ZTE MF820D */
	{QMI_FIXED_INTF(0x19d2, 0x0326, 4)},	/* ZTE MF821D */
	{QMI_FIXED_INTF(0x19d2, 0x1008, 4)},	/* ZTE (Vodafone) K3570-Z */
	{QMI_FIXED_INTF(0x19d2, 0x1010, 4)},	/* ZTE (Vodafone) K3571-Z */
	{QMI_FIXED_INTF(0x19d2, 0x1018, 3)},	/* ZTE (Vodafone) K5006-Z */
	{QMI_FIXED_INTF(0x19d2, 0x1402, 2)},	/* ZTE MF60 */
	{QMI_FIXED_INTF(0x19d2, 0x2002, 4)},	/* ZTE (Vodafone) K3765-Z */
	{QMI_FIXED_INTF(0x0f3d, 0x68a2, 8)},    /* Sierra Wireless MC7700 */
	{QMI_FIXED_INTF(0x114f, 0x68a2, 8)},    /* Sierra Wireless MC7750 */
	{QMI_FIXED_INTF(0x1199, 0x68a2, 8)},	/* Sierra Wireless MC7710 in QMI mode */
	{QMI_FIXED_INTF(0x1199, 0x68a2, 19)},	/* Sierra Wireless MC7710 in QMI mode */
	{QMI_FIXED_INTF(0x1199, 0x901c, 8)},    /* Sierra Wireless EM7700 */

	/* 4. Gobi 1000 devices */
	{QMI_GOBI1K_DEVICE(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */
	{QMI_GOBI1K_DEVICE(0x03f0, 0x1f1d)},	/* HP un2400 Gobi Modem Device */
	{QMI_GOBI1K_DEVICE(0x04da, 0x250d)},	/* Panasonic Gobi Modem device */
	{QMI_GOBI1K_DEVICE(0x413c, 0x8172)},	/* Dell Gobi Modem device */
	{QMI_GOBI1K_DEVICE(0x1410, 0xa001)},	/* Novatel Gobi Modem device */
	{QMI_GOBI1K_DEVICE(0x0b05, 0x1776)},	/* Asus Gobi Modem device */
	{QMI_GOBI1K_DEVICE(0x19d2, 0xfff3)},	/* ONDA Gobi Modem device */
	{QMI_GOBI1K_DEVICE(0x05c6, 0x9001)},	/* Generic Gobi Modem device */
	{QMI_GOBI1K_DEVICE(0x05c6, 0x9002)},	/* Generic Gobi Modem device */
	{QMI_GOBI1K_DEVICE(0x05c6, 0x9202)},	/* Generic Gobi Modem device */
	{QMI_GOBI1K_DEVICE(0x05c6, 0x9203)},	/* Generic Gobi Modem device */
	{QMI_GOBI1K_DEVICE(0x05c6, 0x9222)},	/* Generic Gobi Modem device */
	{QMI_GOBI1K_DEVICE(0x05c6, 0x9009)},	/* Generic Gobi Modem device */

	/* 5. Gobi 2000 and 3000 devices */
	{QMI_GOBI_DEVICE(0x413c, 0x8186)},	/* Dell Gobi 2000 Modem device (N0218, VU936) */
	{QMI_GOBI_DEVICE(0x413c, 0x8194)},	/* Dell Gobi 3000 Composite */
	{QMI_GOBI_DEVICE(0x05c6, 0x920b)},	/* Generic Gobi 2000 Modem device */
	{QMI_GOBI_DEVICE(0x05c6, 0x920d)},	/* Gobi 3000 Composite */
	{QMI_GOBI_DEVICE(0x05c6, 0x9225)},	/* Sony Gobi 2000 Modem device (N0279, VU730) */
	{QMI_GOBI_DEVICE(0x05c6, 0x9245)},	/* Samsung Gobi 2000 Modem device (VL176) */
	{QMI_GOBI_DEVICE(0x03f0, 0x251d)},	/* HP Gobi 2000 Modem device (VP412) */
	{QMI_GOBI_DEVICE(0x05c6, 0x9215)},	/* Acer Gobi 2000 Modem device (VP413) */
	{QMI_GOBI_DEVICE(0x05c6, 0x9265)},	/* Asus Gobi 2000 Modem device (VR305) */
	{QMI_GOBI_DEVICE(0x05c6, 0x9235)},	/* Top Global Gobi 2000 Modem device (VR306) */
	{QMI_GOBI_DEVICE(0x05c6, 0x9275)},	/* iRex Technologies Gobi 2000 Modem device (VR307) */
	{QMI_GOBI_DEVICE(0x1199, 0x68a5)},	/* Sierra Wireless Modem */
	{QMI_GOBI_DEVICE(0x1199, 0x68a9)},	/* Sierra Wireless Modem */
	{QMI_GOBI_DEVICE(0x1199, 0x9001)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
	{QMI_GOBI_DEVICE(0x1199, 0x9002)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
	{QMI_GOBI_DEVICE(0x1199, 0x9003)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
	{QMI_GOBI_DEVICE(0x1199, 0x9004)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
	{QMI_GOBI_DEVICE(0x1199, 0x9005)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
	{QMI_GOBI_DEVICE(0x1199, 0x9006)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
	{QMI_GOBI_DEVICE(0x1199, 0x9007)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
	{QMI_GOBI_DEVICE(0x1199, 0x9008)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
	{QMI_GOBI_DEVICE(0x1199, 0x9009)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
	{QMI_GOBI_DEVICE(0x1199, 0x900a)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
	{QMI_GOBI_DEVICE(0x1199, 0x9011)},	/* Sierra Wireless Gobi 2000 Modem device (MC8305) */
	{QMI_FIXED_INTF(0x1199, 0x9011, 5)},	/* alternate interface number!? */
	{QMI_GOBI_DEVICE(0x16d8, 0x8002)},	/* CMDTech Gobi 2000 Modem device (VU922) */
	{QMI_GOBI_DEVICE(0x05c6, 0x9205)},	/* Gobi 2000 Modem device */
	{QMI_GOBI_DEVICE(0x1199, 0x9013)},	/* Sierra Wireless Gobi 3000 Modem device (MC8355) */
	{QMI_GOBI_DEVICE(0x03f0, 0x371d)},	/* HP un2430 Mobile Broadband Module */
	{QMI_GOBI_DEVICE(0x1199, 0x9015)},	/* Sierra Wireless Gobi 3000 Modem device */
	{QMI_GOBI_DEVICE(0x1199, 0x9019)},	/* Sierra Wireless Gobi 3000 Modem device */
	{QMI_GOBI_DEVICE(0x1199, 0x901b)},	/* Sierra Wireless MC7770 */
	{QMI_GOBI_DEVICE(0x12d1, 0x14f1)},	/* Sony Gobi 3000 Composite */
	{QMI_GOBI_DEVICE(0x1410, 0xa021)},	/* Foxconn Gobi 3000 Modem device (Novatel E396) */

	{ }					/* END */
};
MODULE_DEVICE_TABLE(usb, products);

static int qmi_wwan_probe(struct usb_interface *intf, const struct usb_device_id *prod)
{
	struct usb_device_id *id = (struct usb_device_id *)prod;

	/* Workaround to enable dynamic IDs.  This disables usbnet
	 * blacklisting functionality.  Which, if required, can be
	 * reimplemented here by using a magic "blacklist" value
	 * instead of 0 in the static device id table
	 */
	if (!id->driver_info) {
		dev_dbg(&intf->dev, "setting defaults for dynamic device id\n");
		id->driver_info = (unsigned long)&qmi_wwan_shared;
	}

	return usbnet_probe(intf, id);
}

static struct usb_driver qmi_wwan_driver = {
	.name		      = "qmi_wwan",
	.id_table	      = products,
	.probe		      = qmi_wwan_probe,
	.disconnect	      = usbnet_disconnect,
	.suspend	      = qmi_wwan_suspend,
	.resume		      =	qmi_wwan_resume,
	.reset_resume         = qmi_wwan_resume,
	.supports_autosuspend = 1,
	.disable_hub_initiated_lpm = 1,
};

module_usb_driver(qmi_wwan_driver);

MODULE_AUTHOR("Bjørn Mork <bjorn@mork.no>");
MODULE_DESCRIPTION("Qualcomm MSM Interface (QMI) WWAN driver");
MODULE_LICENSE("GPL");