xref: /openbmc/linux/drivers/usb/serial/qcserial.c (revision a06c488d)
1 /*
2  * Qualcomm Serial USB driver
3  *
4  *	Copyright (c) 2008 QUALCOMM Incorporated.
5  *	Copyright (c) 2009 Greg Kroah-Hartman <gregkh@suse.de>
6  *	Copyright (c) 2009 Novell Inc.
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 version
10  *	2 as published by the Free Software Foundation.
11  *
12  */
13 
14 #include <linux/tty.h>
15 #include <linux/tty_flip.h>
16 #include <linux/module.h>
17 #include <linux/usb.h>
18 #include <linux/usb/serial.h>
19 #include <linux/slab.h>
20 #include "usb-wwan.h"
21 
22 #define DRIVER_AUTHOR "Qualcomm Inc"
23 #define DRIVER_DESC "Qualcomm USB Serial driver"
24 
25 #define QUECTEL_EC20_PID	0x9215
26 
27 /* standard device layouts supported by this driver */
28 enum qcserial_layouts {
29 	QCSERIAL_G2K = 0,	/* Gobi 2000 */
30 	QCSERIAL_G1K = 1,	/* Gobi 1000 */
31 	QCSERIAL_SWI = 2,	/* Sierra Wireless */
32 	QCSERIAL_HWI = 3,	/* Huawei */
33 };
34 
35 #define DEVICE_G1K(v, p) \
36 	USB_DEVICE(v, p), .driver_info = QCSERIAL_G1K
37 #define DEVICE_SWI(v, p) \
38 	USB_DEVICE(v, p), .driver_info = QCSERIAL_SWI
39 #define DEVICE_HWI(v, p) \
40 	USB_DEVICE(v, p), .driver_info = QCSERIAL_HWI
41 
42 static const struct usb_device_id id_table[] = {
43 	/* Gobi 1000 devices */
44 	{DEVICE_G1K(0x05c6, 0x9211)},	/* Acer Gobi QDL device */
45 	{DEVICE_G1K(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */
46 	{DEVICE_G1K(0x03f0, 0x1f1d)},	/* HP un2400 Gobi Modem Device */
47 	{DEVICE_G1K(0x03f0, 0x201d)},	/* HP un2400 Gobi QDL Device */
48 	{DEVICE_G1K(0x04da, 0x250d)},	/* Panasonic Gobi Modem device */
49 	{DEVICE_G1K(0x04da, 0x250c)},	/* Panasonic Gobi QDL device */
50 	{DEVICE_G1K(0x413c, 0x8172)},	/* Dell Gobi Modem device */
51 	{DEVICE_G1K(0x413c, 0x8171)},	/* Dell Gobi QDL device */
52 	{DEVICE_G1K(0x1410, 0xa001)},	/* Novatel/Verizon USB-1000 */
53 	{DEVICE_G1K(0x1410, 0xa002)},	/* Novatel Gobi Modem device */
54 	{DEVICE_G1K(0x1410, 0xa003)},	/* Novatel Gobi Modem device */
55 	{DEVICE_G1K(0x1410, 0xa004)},	/* Novatel Gobi Modem device */
56 	{DEVICE_G1K(0x1410, 0xa005)},	/* Novatel Gobi Modem device */
57 	{DEVICE_G1K(0x1410, 0xa006)},	/* Novatel Gobi Modem device */
58 	{DEVICE_G1K(0x1410, 0xa007)},	/* Novatel Gobi Modem device */
59 	{DEVICE_G1K(0x1410, 0xa008)},	/* Novatel Gobi QDL device */
60 	{DEVICE_G1K(0x0b05, 0x1776)},	/* Asus Gobi Modem device */
61 	{DEVICE_G1K(0x0b05, 0x1774)},	/* Asus Gobi QDL device */
62 	{DEVICE_G1K(0x19d2, 0xfff3)},	/* ONDA Gobi Modem device */
63 	{DEVICE_G1K(0x19d2, 0xfff2)},	/* ONDA Gobi QDL device */
64 	{DEVICE_G1K(0x1557, 0x0a80)},	/* OQO Gobi QDL device */
65 	{DEVICE_G1K(0x05c6, 0x9001)},   /* Generic Gobi Modem device */
66 	{DEVICE_G1K(0x05c6, 0x9002)},	/* Generic Gobi Modem device */
67 	{DEVICE_G1K(0x05c6, 0x9202)},	/* Generic Gobi Modem device */
68 	{DEVICE_G1K(0x05c6, 0x9203)},	/* Generic Gobi Modem device */
69 	{DEVICE_G1K(0x05c6, 0x9222)},	/* Generic Gobi Modem device */
70 	{DEVICE_G1K(0x05c6, 0x9008)},	/* Generic Gobi QDL device */
71 	{DEVICE_G1K(0x05c6, 0x9009)},	/* Generic Gobi Modem device */
72 	{DEVICE_G1K(0x05c6, 0x9201)},	/* Generic Gobi QDL device */
73 	{DEVICE_G1K(0x05c6, 0x9221)},	/* Generic Gobi QDL device */
74 	{DEVICE_G1K(0x05c6, 0x9231)},	/* Generic Gobi QDL device */
75 	{DEVICE_G1K(0x1f45, 0x0001)},	/* Unknown Gobi QDL device */
76 	{DEVICE_G1K(0x1bc7, 0x900e)},	/* Telit Gobi QDL device */
77 
78 	/* Gobi 2000 devices */
79 	{USB_DEVICE(0x1410, 0xa010)},	/* Novatel Gobi 2000 QDL device */
80 	{USB_DEVICE(0x1410, 0xa011)},	/* Novatel Gobi 2000 QDL device */
81 	{USB_DEVICE(0x1410, 0xa012)},	/* Novatel Gobi 2000 QDL device */
82 	{USB_DEVICE(0x1410, 0xa013)},	/* Novatel Gobi 2000 QDL device */
83 	{USB_DEVICE(0x1410, 0xa014)},	/* Novatel Gobi 2000 QDL device */
84 	{USB_DEVICE(0x413c, 0x8185)},	/* Dell Gobi 2000 QDL device (N0218, VU936) */
85 	{USB_DEVICE(0x413c, 0x8186)},	/* Dell Gobi 2000 Modem device (N0218, VU936) */
86 	{USB_DEVICE(0x05c6, 0x9208)},	/* Generic Gobi 2000 QDL device */
87 	{USB_DEVICE(0x05c6, 0x920b)},	/* Generic Gobi 2000 Modem device */
88 	{USB_DEVICE(0x05c6, 0x9224)},	/* Sony Gobi 2000 QDL device (N0279, VU730) */
89 	{USB_DEVICE(0x05c6, 0x9225)},	/* Sony Gobi 2000 Modem device (N0279, VU730) */
90 	{USB_DEVICE(0x05c6, 0x9244)},	/* Samsung Gobi 2000 QDL device (VL176) */
91 	{USB_DEVICE(0x05c6, 0x9245)},	/* Samsung Gobi 2000 Modem device (VL176) */
92 	{USB_DEVICE(0x03f0, 0x241d)},	/* HP Gobi 2000 QDL device (VP412) */
93 	{USB_DEVICE(0x03f0, 0x251d)},	/* HP Gobi 2000 Modem device (VP412) */
94 	{USB_DEVICE(0x05c6, 0x9214)},	/* Acer Gobi 2000 QDL device (VP413) */
95 	{USB_DEVICE(0x05c6, 0x9215)},	/* Acer Gobi 2000 Modem device (VP413) */
96 	{USB_DEVICE(0x05c6, 0x9264)},	/* Asus Gobi 2000 QDL device (VR305) */
97 	{USB_DEVICE(0x05c6, 0x9265)},	/* Asus Gobi 2000 Modem device (VR305) */
98 	{USB_DEVICE(0x05c6, 0x9234)},	/* Top Global Gobi 2000 QDL device (VR306) */
99 	{USB_DEVICE(0x05c6, 0x9235)},	/* Top Global Gobi 2000 Modem device (VR306) */
100 	{USB_DEVICE(0x05c6, 0x9274)},	/* iRex Technologies Gobi 2000 QDL device (VR307) */
101 	{USB_DEVICE(0x05c6, 0x9275)},	/* iRex Technologies Gobi 2000 Modem device (VR307) */
102 	{USB_DEVICE(0x1199, 0x9000)},	/* Sierra Wireless Gobi 2000 QDL device (VT773) */
103 	{USB_DEVICE(0x1199, 0x9001)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
104 	{USB_DEVICE(0x1199, 0x9002)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
105 	{USB_DEVICE(0x1199, 0x9003)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
106 	{USB_DEVICE(0x1199, 0x9004)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
107 	{USB_DEVICE(0x1199, 0x9005)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
108 	{USB_DEVICE(0x1199, 0x9006)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
109 	{USB_DEVICE(0x1199, 0x9007)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
110 	{USB_DEVICE(0x1199, 0x9008)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
111 	{USB_DEVICE(0x1199, 0x9009)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
112 	{USB_DEVICE(0x1199, 0x900a)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
113 	{USB_DEVICE(0x1199, 0x9011)},   /* Sierra Wireless Gobi 2000 Modem device (MC8305) */
114 	{USB_DEVICE(0x16d8, 0x8001)},	/* CMDTech Gobi 2000 QDL device (VU922) */
115 	{USB_DEVICE(0x16d8, 0x8002)},	/* CMDTech Gobi 2000 Modem device (VU922) */
116 	{USB_DEVICE(0x05c6, 0x9204)},	/* Gobi 2000 QDL device */
117 	{USB_DEVICE(0x05c6, 0x9205)},	/* Gobi 2000 Modem device */
118 
119 	/* Gobi 3000 devices */
120 	{USB_DEVICE(0x03f0, 0x371d)},	/* HP un2430 Gobi 3000 QDL */
121 	{USB_DEVICE(0x05c6, 0x920c)},	/* Gobi 3000 QDL */
122 	{USB_DEVICE(0x05c6, 0x920d)},	/* Gobi 3000 Composite */
123 	{USB_DEVICE(0x1410, 0xa020)},   /* Novatel Gobi 3000 QDL */
124 	{USB_DEVICE(0x1410, 0xa021)},	/* Novatel Gobi 3000 Composite */
125 	{USB_DEVICE(0x413c, 0x8193)},	/* Dell Gobi 3000 QDL */
126 	{USB_DEVICE(0x413c, 0x8194)},	/* Dell Gobi 3000 Composite */
127 	{USB_DEVICE(0x1199, 0x68a4)},	/* Sierra Wireless QDL */
128 	{USB_DEVICE(0x1199, 0x68a5)},	/* Sierra Wireless Modem */
129 	{USB_DEVICE(0x1199, 0x68a8)},	/* Sierra Wireless QDL */
130 	{USB_DEVICE(0x1199, 0x68a9)},	/* Sierra Wireless Modem */
131 	{USB_DEVICE(0x1199, 0x9010)},	/* Sierra Wireless Gobi 3000 QDL */
132 	{USB_DEVICE(0x1199, 0x9012)},	/* Sierra Wireless Gobi 3000 QDL */
133 	{USB_DEVICE(0x1199, 0x9013)},	/* Sierra Wireless Gobi 3000 Modem device (MC8355) */
134 	{USB_DEVICE(0x1199, 0x9014)},	/* Sierra Wireless Gobi 3000 QDL */
135 	{USB_DEVICE(0x1199, 0x9015)},	/* Sierra Wireless Gobi 3000 Modem device */
136 	{USB_DEVICE(0x1199, 0x9018)},	/* Sierra Wireless Gobi 3000 QDL */
137 	{USB_DEVICE(0x1199, 0x9019)},	/* Sierra Wireless Gobi 3000 Modem device */
138 	{USB_DEVICE(0x1199, 0x901b)},	/* Sierra Wireless MC7770 */
139 	{USB_DEVICE(0x12D1, 0x14F0)},	/* Sony Gobi 3000 QDL */
140 	{USB_DEVICE(0x12D1, 0x14F1)},	/* Sony Gobi 3000 Composite */
141 	{USB_DEVICE(0x0AF0, 0x8120)},	/* Option GTM681W */
142 
143 	/* non-Gobi Sierra Wireless devices */
144 	{DEVICE_SWI(0x03f0, 0x4e1d)},	/* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
145 	{DEVICE_SWI(0x0f3d, 0x68a2)},	/* Sierra Wireless MC7700 */
146 	{DEVICE_SWI(0x114f, 0x68a2)},	/* Sierra Wireless MC7750 */
147 	{DEVICE_SWI(0x1199, 0x68a2)},	/* Sierra Wireless MC7710 */
148 	{DEVICE_SWI(0x1199, 0x68c0)},	/* Sierra Wireless MC7304/MC7354 */
149 	{DEVICE_SWI(0x1199, 0x901c)},	/* Sierra Wireless EM7700 */
150 	{DEVICE_SWI(0x1199, 0x901f)},	/* Sierra Wireless EM7355 */
151 	{DEVICE_SWI(0x1199, 0x9040)},	/* Sierra Wireless Modem */
152 	{DEVICE_SWI(0x1199, 0x9041)},	/* Sierra Wireless MC7305/MC7355 */
153 	{DEVICE_SWI(0x1199, 0x9051)},	/* Netgear AirCard 340U */
154 	{DEVICE_SWI(0x1199, 0x9053)},	/* Sierra Wireless Modem */
155 	{DEVICE_SWI(0x1199, 0x9054)},	/* Sierra Wireless Modem */
156 	{DEVICE_SWI(0x1199, 0x9055)},	/* Netgear AirCard 341U */
157 	{DEVICE_SWI(0x1199, 0x9056)},	/* Sierra Wireless Modem */
158 	{DEVICE_SWI(0x1199, 0x9060)},	/* Sierra Wireless Modem */
159 	{DEVICE_SWI(0x1199, 0x9061)},	/* Sierra Wireless Modem */
160 	{DEVICE_SWI(0x1199, 0x9070)},	/* Sierra Wireless MC74xx/EM74xx */
161 	{DEVICE_SWI(0x1199, 0x9071)},	/* Sierra Wireless MC74xx/EM74xx */
162 	{DEVICE_SWI(0x413c, 0x81a2)},	/* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
163 	{DEVICE_SWI(0x413c, 0x81a3)},	/* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
164 	{DEVICE_SWI(0x413c, 0x81a4)},	/* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
165 	{DEVICE_SWI(0x413c, 0x81a8)},	/* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
166 	{DEVICE_SWI(0x413c, 0x81a9)},	/* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
167 	{DEVICE_SWI(0x413c, 0x81b1)},	/* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
168 
169 	/* Huawei devices */
170 	{DEVICE_HWI(0x03f0, 0x581d)},	/* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */
171 
172 	{ }				/* Terminating entry */
173 };
174 MODULE_DEVICE_TABLE(usb, id_table);
175 
176 static int handle_quectel_ec20(struct device *dev, int ifnum)
177 {
178 	int altsetting = 0;
179 
180 	/*
181 	 * Quectel EC20 Mini PCIe LTE module layout:
182 	 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
183 	 * 1: NMEA
184 	 * 2: AT-capable modem port
185 	 * 3: Modem interface
186 	 * 4: NDIS
187 	 */
188 	switch (ifnum) {
189 	case 0:
190 		dev_dbg(dev, "Quectel EC20 DM/DIAG interface found\n");
191 		break;
192 	case 1:
193 		dev_dbg(dev, "Quectel EC20 NMEA GPS interface found\n");
194 		break;
195 	case 2:
196 	case 3:
197 		dev_dbg(dev, "Quectel EC20 Modem port found\n");
198 		break;
199 	case 4:
200 		/* Don't claim the QMI/net interface */
201 		altsetting = -1;
202 		break;
203 	}
204 
205 	return altsetting;
206 }
207 
208 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
209 {
210 	struct usb_host_interface *intf = serial->interface->cur_altsetting;
211 	struct device *dev = &serial->dev->dev;
212 	int retval = -ENODEV;
213 	__u8 nintf;
214 	__u8 ifnum;
215 	int altsetting = -1;
216 	bool sendsetup = false;
217 
218 	/* we only support vendor specific functions */
219 	if (intf->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC)
220 		goto done;
221 
222 	nintf = serial->dev->actconfig->desc.bNumInterfaces;
223 	dev_dbg(dev, "Num Interfaces = %d\n", nintf);
224 	ifnum = intf->desc.bInterfaceNumber;
225 	dev_dbg(dev, "This Interface = %d\n", ifnum);
226 
227 	if (nintf == 1) {
228 		/* QDL mode */
229 		/* Gobi 2000 has a single altsetting, older ones have two */
230 		if (serial->interface->num_altsetting == 2)
231 			intf = &serial->interface->altsetting[1];
232 		else if (serial->interface->num_altsetting > 2)
233 			goto done;
234 
235 		if (intf->desc.bNumEndpoints == 2 &&
236 		    usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
237 		    usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
238 			dev_dbg(dev, "QDL port found\n");
239 
240 			if (serial->interface->num_altsetting == 1)
241 				retval = 0; /* Success */
242 			else
243 				altsetting = 1;
244 		}
245 		goto done;
246 
247 	}
248 
249 	/* default to enabling interface */
250 	altsetting = 0;
251 
252 	/*
253 	 * Composite mode; don't bind to the QMI/net interface as that
254 	 * gets handled by other drivers.
255 	 */
256 
257 	switch (id->driver_info) {
258 	case QCSERIAL_G1K:
259 		/*
260 		 * Gobi 1K USB layout:
261 		 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
262 		 * 1: serial port (doesn't respond)
263 		 * 2: AT-capable modem port
264 		 * 3: QMI/net
265 		 */
266 		if (nintf < 3 || nintf > 4) {
267 			dev_err(dev, "unknown number of interfaces: %d\n", nintf);
268 			altsetting = -1;
269 			goto done;
270 		}
271 
272 		if (ifnum == 0) {
273 			dev_dbg(dev, "Gobi 1K DM/DIAG interface found\n");
274 			altsetting = 1;
275 		} else if (ifnum == 2)
276 			dev_dbg(dev, "Modem port found\n");
277 		else
278 			altsetting = -1;
279 		break;
280 	case QCSERIAL_G2K:
281 		/* handle non-standard layouts */
282 		if (nintf == 5 && id->idProduct == QUECTEL_EC20_PID) {
283 			altsetting = handle_quectel_ec20(dev, ifnum);
284 			goto done;
285 		}
286 
287 		/*
288 		 * Gobi 2K+ USB layout:
289 		 * 0: QMI/net
290 		 * 1: DM/DIAG (use libqcdm from ModemManager for communication)
291 		 * 2: AT-capable modem port
292 		 * 3: NMEA
293 		 */
294 		if (nintf < 3 || nintf > 4) {
295 			dev_err(dev, "unknown number of interfaces: %d\n", nintf);
296 			altsetting = -1;
297 			goto done;
298 		}
299 
300 		switch (ifnum) {
301 		case 0:
302 			/* Don't claim the QMI/net interface */
303 			altsetting = -1;
304 			break;
305 		case 1:
306 			dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n");
307 			break;
308 		case 2:
309 			dev_dbg(dev, "Modem port found\n");
310 			break;
311 		case 3:
312 			/*
313 			 * NMEA (serial line 9600 8N1)
314 			 * # echo "\$GPS_START" > /dev/ttyUSBx
315 			 * # echo "\$GPS_STOP"  > /dev/ttyUSBx
316 			 */
317 			dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
318 			break;
319 		}
320 		break;
321 	case QCSERIAL_SWI:
322 		/*
323 		 * Sierra Wireless layout:
324 		 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
325 		 * 2: NMEA
326 		 * 3: AT-capable modem port
327 		 * 8: QMI/net
328 		 */
329 		switch (ifnum) {
330 		case 0:
331 			dev_dbg(dev, "DM/DIAG interface found\n");
332 			break;
333 		case 2:
334 			dev_dbg(dev, "NMEA GPS interface found\n");
335 			break;
336 		case 3:
337 			dev_dbg(dev, "Modem port found\n");
338 			sendsetup = true;
339 			break;
340 		default:
341 			/* don't claim any unsupported interface */
342 			altsetting = -1;
343 			break;
344 		}
345 		break;
346 	case QCSERIAL_HWI:
347 		/*
348 		 * Huawei devices map functions by subclass + protocol
349 		 * instead of interface numbers. The protocol identify
350 		 * a specific function, while the subclass indicate a
351 		 * specific firmware source
352 		 *
353 		 * This is a blacklist of functions known to be
354 		 * non-serial.  The rest are assumed to be serial and
355 		 * will be handled by this driver
356 		 */
357 		switch (intf->desc.bInterfaceProtocol) {
358 			/* QMI combined (qmi_wwan) */
359 		case 0x07:
360 		case 0x37:
361 		case 0x67:
362 			/* QMI data (qmi_wwan) */
363 		case 0x08:
364 		case 0x38:
365 		case 0x68:
366 			/* QMI control (qmi_wwan) */
367 		case 0x09:
368 		case 0x39:
369 		case 0x69:
370 			/* NCM like (huawei_cdc_ncm) */
371 		case 0x16:
372 		case 0x46:
373 		case 0x76:
374 			altsetting = -1;
375 			break;
376 		default:
377 			dev_dbg(dev, "Huawei type serial port found (%02x/%02x/%02x)\n",
378 				intf->desc.bInterfaceClass,
379 				intf->desc.bInterfaceSubClass,
380 				intf->desc.bInterfaceProtocol);
381 		}
382 		break;
383 	default:
384 		dev_err(dev, "unsupported device layout type: %lu\n",
385 			id->driver_info);
386 		break;
387 	}
388 
389 done:
390 	if (altsetting >= 0) {
391 		retval = usb_set_interface(serial->dev, ifnum, altsetting);
392 		if (retval < 0) {
393 			dev_err(dev,
394 				"Could not set interface, error %d\n",
395 				retval);
396 			retval = -ENODEV;
397 		}
398 	}
399 
400 	if (!retval)
401 		usb_set_serial_data(serial, (void *)(unsigned long)sendsetup);
402 
403 	return retval;
404 }
405 
406 static int qc_attach(struct usb_serial *serial)
407 {
408 	struct usb_wwan_intf_private *data;
409 	bool sendsetup;
410 
411 	data = kzalloc(sizeof(*data), GFP_KERNEL);
412 	if (!data)
413 		return -ENOMEM;
414 
415 	sendsetup = !!(unsigned long)(usb_get_serial_data(serial));
416 	if (sendsetup)
417 		data->use_send_setup = 1;
418 
419 	spin_lock_init(&data->susp_lock);
420 
421 	usb_set_serial_data(serial, data);
422 
423 	return 0;
424 }
425 
426 static void qc_release(struct usb_serial *serial)
427 {
428 	struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
429 
430 	usb_set_serial_data(serial, NULL);
431 	kfree(priv);
432 }
433 
434 static struct usb_serial_driver qcdevice = {
435 	.driver = {
436 		.owner     = THIS_MODULE,
437 		.name      = "qcserial",
438 	},
439 	.description         = "Qualcomm USB modem",
440 	.id_table            = id_table,
441 	.num_ports           = 1,
442 	.probe               = qcprobe,
443 	.open		     = usb_wwan_open,
444 	.close		     = usb_wwan_close,
445 	.dtr_rts	     = usb_wwan_dtr_rts,
446 	.write		     = usb_wwan_write,
447 	.write_room	     = usb_wwan_write_room,
448 	.chars_in_buffer     = usb_wwan_chars_in_buffer,
449 	.attach              = qc_attach,
450 	.release	     = qc_release,
451 	.port_probe          = usb_wwan_port_probe,
452 	.port_remove	     = usb_wwan_port_remove,
453 #ifdef CONFIG_PM
454 	.suspend	     = usb_wwan_suspend,
455 	.resume		     = usb_wwan_resume,
456 #endif
457 };
458 
459 static struct usb_serial_driver * const serial_drivers[] = {
460 	&qcdevice, NULL
461 };
462 
463 module_usb_serial_driver(serial_drivers, id_table);
464 
465 MODULE_AUTHOR(DRIVER_AUTHOR);
466 MODULE_DESCRIPTION(DRIVER_DESC);
467 MODULE_LICENSE("GPL v2");
468