1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Qualcomm Serial USB driver
4 *
5 * Copyright (c) 2008 QUALCOMM Incorporated.
6 * Copyright (c) 2009 Greg Kroah-Hartman <gregkh@suse.de>
7 * Copyright (c) 2009 Novell Inc.
8 */
9
10 #include <linux/tty.h>
11 #include <linux/tty_flip.h>
12 #include <linux/module.h>
13 #include <linux/usb.h>
14 #include <linux/usb/serial.h>
15 #include <linux/slab.h>
16 #include "usb-wwan.h"
17
18 #define DRIVER_AUTHOR "Qualcomm Inc"
19 #define DRIVER_DESC "Qualcomm USB Serial driver"
20
21 #define QUECTEL_EC20_PID 0x9215
22
23 /* standard device layouts supported by this driver */
24 enum qcserial_layouts {
25 QCSERIAL_G2K = 0, /* Gobi 2000 */
26 QCSERIAL_G1K = 1, /* Gobi 1000 */
27 QCSERIAL_SWI = 2, /* Sierra Wireless */
28 QCSERIAL_HWI = 3, /* Huawei */
29 };
30
31 #define DEVICE_G1K(v, p) \
32 USB_DEVICE(v, p), .driver_info = QCSERIAL_G1K
33 #define DEVICE_SWI(v, p) \
34 USB_DEVICE(v, p), .driver_info = QCSERIAL_SWI
35 #define DEVICE_HWI(v, p) \
36 USB_DEVICE(v, p), .driver_info = QCSERIAL_HWI
37
38 static const struct usb_device_id id_table[] = {
39 /* Gobi 1000 devices */
40 {DEVICE_G1K(0x05c6, 0x9211)}, /* Acer Gobi QDL device */
41 {DEVICE_G1K(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */
42 {DEVICE_G1K(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */
43 {DEVICE_G1K(0x03f0, 0x201d)}, /* HP un2400 Gobi QDL Device */
44 {DEVICE_G1K(0x04da, 0x250d)}, /* Panasonic Gobi Modem device */
45 {DEVICE_G1K(0x04da, 0x250c)}, /* Panasonic Gobi QDL device */
46 {DEVICE_G1K(0x413c, 0x8172)}, /* Dell Gobi Modem device */
47 {DEVICE_G1K(0x413c, 0x8171)}, /* Dell Gobi QDL device */
48 {DEVICE_G1K(0x1410, 0xa001)}, /* Novatel/Verizon USB-1000 */
49 {DEVICE_G1K(0x1410, 0xa002)}, /* Novatel Gobi Modem device */
50 {DEVICE_G1K(0x1410, 0xa003)}, /* Novatel Gobi Modem device */
51 {DEVICE_G1K(0x1410, 0xa004)}, /* Novatel Gobi Modem device */
52 {DEVICE_G1K(0x1410, 0xa005)}, /* Novatel Gobi Modem device */
53 {DEVICE_G1K(0x1410, 0xa006)}, /* Novatel Gobi Modem device */
54 {DEVICE_G1K(0x1410, 0xa007)}, /* Novatel Gobi Modem device */
55 {DEVICE_G1K(0x1410, 0xa008)}, /* Novatel Gobi QDL device */
56 {DEVICE_G1K(0x0b05, 0x1776)}, /* Asus Gobi Modem device */
57 {DEVICE_G1K(0x0b05, 0x1774)}, /* Asus Gobi QDL device */
58 {DEVICE_G1K(0x19d2, 0xfff3)}, /* ONDA Gobi Modem device */
59 {DEVICE_G1K(0x19d2, 0xfff2)}, /* ONDA Gobi QDL device */
60 {DEVICE_G1K(0x1557, 0x0a80)}, /* OQO Gobi QDL device */
61 {DEVICE_G1K(0x05c6, 0x9001)}, /* Generic Gobi Modem device */
62 {DEVICE_G1K(0x05c6, 0x9002)}, /* Generic Gobi Modem device */
63 {DEVICE_G1K(0x05c6, 0x9202)}, /* Generic Gobi Modem device */
64 {DEVICE_G1K(0x05c6, 0x9203)}, /* Generic Gobi Modem device */
65 {DEVICE_G1K(0x05c6, 0x9222)}, /* Generic Gobi Modem device */
66 {DEVICE_G1K(0x05c6, 0x9008)}, /* Generic Gobi QDL device */
67 {DEVICE_G1K(0x05c6, 0x9009)}, /* Generic Gobi Modem device */
68 {DEVICE_G1K(0x05c6, 0x9201)}, /* Generic Gobi QDL device */
69 {DEVICE_G1K(0x05c6, 0x9221)}, /* Generic Gobi QDL device */
70 {DEVICE_G1K(0x05c6, 0x9231)}, /* Generic Gobi QDL device */
71 {DEVICE_G1K(0x1f45, 0x0001)}, /* Unknown Gobi QDL device */
72 {DEVICE_G1K(0x1bc7, 0x900e)}, /* Telit Gobi QDL device */
73
74 /* Gobi 2000 devices */
75 {USB_DEVICE(0x1410, 0xa010)}, /* Novatel Gobi 2000 QDL device */
76 {USB_DEVICE(0x1410, 0xa011)}, /* Novatel Gobi 2000 QDL device */
77 {USB_DEVICE(0x1410, 0xa012)}, /* Novatel Gobi 2000 QDL device */
78 {USB_DEVICE(0x1410, 0xa013)}, /* Novatel Gobi 2000 QDL device */
79 {USB_DEVICE(0x1410, 0xa014)}, /* Novatel Gobi 2000 QDL device */
80 {USB_DEVICE(0x413c, 0x8185)}, /* Dell Gobi 2000 QDL device (N0218, VU936) */
81 {USB_DEVICE(0x413c, 0x8186)}, /* Dell Gobi 2000 Modem device (N0218, VU936) */
82 {USB_DEVICE(0x05c6, 0x9208)}, /* Generic Gobi 2000 QDL device */
83 {USB_DEVICE(0x05c6, 0x920b)}, /* Generic Gobi 2000 Modem device */
84 {USB_DEVICE(0x05c6, 0x9224)}, /* Sony Gobi 2000 QDL device (N0279, VU730) */
85 {USB_DEVICE(0x05c6, 0x9225)}, /* Sony Gobi 2000 Modem device (N0279, VU730) */
86 {USB_DEVICE(0x05c6, 0x9244)}, /* Samsung Gobi 2000 QDL device (VL176) */
87 {USB_DEVICE(0x05c6, 0x9245)}, /* Samsung Gobi 2000 Modem device (VL176) */
88 {USB_DEVICE(0x03f0, 0x241d)}, /* HP Gobi 2000 QDL device (VP412) */
89 {USB_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */
90 {USB_DEVICE(0x05c6, 0x9214)}, /* Acer Gobi 2000 QDL device (VP413) */
91 {USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
92 {USB_DEVICE(0x05c6, 0x9264)}, /* Asus Gobi 2000 QDL device (VR305) */
93 {USB_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */
94 {USB_DEVICE(0x05c6, 0x9234)}, /* Top Global Gobi 2000 QDL device (VR306) */
95 {USB_DEVICE(0x05c6, 0x9235)}, /* Top Global Gobi 2000 Modem device (VR306) */
96 {USB_DEVICE(0x05c6, 0x9274)}, /* iRex Technologies Gobi 2000 QDL device (VR307) */
97 {USB_DEVICE(0x05c6, 0x9275)}, /* iRex Technologies Gobi 2000 Modem device (VR307) */
98 {USB_DEVICE(0x1199, 0x9000)}, /* Sierra Wireless Gobi 2000 QDL device (VT773) */
99 {USB_DEVICE(0x1199, 0x9001)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
100 {USB_DEVICE(0x1199, 0x9002)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
101 {USB_DEVICE(0x1199, 0x9003)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
102 {USB_DEVICE(0x1199, 0x9004)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
103 {USB_DEVICE(0x1199, 0x9005)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
104 {USB_DEVICE(0x1199, 0x9006)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
105 {USB_DEVICE(0x1199, 0x9007)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
106 {USB_DEVICE(0x1199, 0x9008)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
107 {USB_DEVICE(0x1199, 0x9009)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
108 {USB_DEVICE(0x1199, 0x900a)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
109 {USB_DEVICE(0x1199, 0x9011)}, /* Sierra Wireless Gobi 2000 Modem device (MC8305) */
110 {USB_DEVICE(0x16d8, 0x8001)}, /* CMDTech Gobi 2000 QDL device (VU922) */
111 {USB_DEVICE(0x16d8, 0x8002)}, /* CMDTech Gobi 2000 Modem device (VU922) */
112 {USB_DEVICE(0x05c6, 0x9204)}, /* Gobi 2000 QDL device */
113 {USB_DEVICE(0x05c6, 0x9205)}, /* Gobi 2000 Modem device */
114
115 /* Gobi 3000 devices */
116 {USB_DEVICE(0x03f0, 0x371d)}, /* HP un2430 Gobi 3000 QDL */
117 {USB_DEVICE(0x05c6, 0x920c)}, /* Gobi 3000 QDL */
118 {USB_DEVICE(0x05c6, 0x920d)}, /* Gobi 3000 Composite */
119 {USB_DEVICE(0x1410, 0xa020)}, /* Novatel Gobi 3000 QDL */
120 {USB_DEVICE(0x1410, 0xa021)}, /* Novatel Gobi 3000 Composite */
121 {USB_DEVICE(0x413c, 0x8193)}, /* Dell Gobi 3000 QDL */
122 {USB_DEVICE(0x413c, 0x8194)}, /* Dell Gobi 3000 Composite */
123 {USB_DEVICE(0x413c, 0x81a6)}, /* Dell DW5570 QDL (MC8805) */
124 {USB_DEVICE(0x1199, 0x68a4)}, /* Sierra Wireless QDL */
125 {USB_DEVICE(0x1199, 0x68a5)}, /* Sierra Wireless Modem */
126 {USB_DEVICE(0x1199, 0x68a8)}, /* Sierra Wireless QDL */
127 {USB_DEVICE(0x1199, 0x68a9)}, /* Sierra Wireless Modem */
128 {USB_DEVICE(0x1199, 0x9010)}, /* Sierra Wireless Gobi 3000 QDL */
129 {USB_DEVICE(0x1199, 0x9012)}, /* Sierra Wireless Gobi 3000 QDL */
130 {USB_DEVICE(0x1199, 0x9013)}, /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
131 {USB_DEVICE(0x1199, 0x9014)}, /* Sierra Wireless Gobi 3000 QDL */
132 {USB_DEVICE(0x1199, 0x9015)}, /* Sierra Wireless Gobi 3000 Modem device */
133 {USB_DEVICE(0x1199, 0x9018)}, /* Sierra Wireless Gobi 3000 QDL */
134 {USB_DEVICE(0x1199, 0x9019)}, /* Sierra Wireless Gobi 3000 Modem device */
135 {USB_DEVICE(0x1199, 0x901b)}, /* Sierra Wireless MC7770 */
136 {USB_DEVICE(0x12D1, 0x14F0)}, /* Sony Gobi 3000 QDL */
137 {USB_DEVICE(0x12D1, 0x14F1)}, /* Sony Gobi 3000 Composite */
138 {USB_DEVICE(0x0AF0, 0x8120)}, /* Option GTM681W */
139
140 /* non-Gobi Sierra Wireless devices */
141 {DEVICE_SWI(0x03f0, 0x4e1d)}, /* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
142 {DEVICE_SWI(0x0f3d, 0x68a2)}, /* Sierra Wireless MC7700 */
143 {DEVICE_SWI(0x114f, 0x68a2)}, /* Sierra Wireless MC7750 */
144 {DEVICE_SWI(0x1199, 0x68a2)}, /* Sierra Wireless MC7710 */
145 {DEVICE_SWI(0x1199, 0x68c0)}, /* Sierra Wireless MC7304/MC7354 */
146 {DEVICE_SWI(0x1199, 0x901c)}, /* Sierra Wireless EM7700 */
147 {DEVICE_SWI(0x1199, 0x901e)}, /* Sierra Wireless EM7355 QDL */
148 {DEVICE_SWI(0x1199, 0x901f)}, /* Sierra Wireless EM7355 */
149 {DEVICE_SWI(0x1199, 0x9040)}, /* Sierra Wireless Modem */
150 {DEVICE_SWI(0x1199, 0x9041)}, /* Sierra Wireless MC7305/MC7355 */
151 {DEVICE_SWI(0x1199, 0x9051)}, /* Netgear AirCard 340U */
152 {DEVICE_SWI(0x1199, 0x9053)}, /* Sierra Wireless Modem */
153 {DEVICE_SWI(0x1199, 0x9054)}, /* Sierra Wireless Modem */
154 {DEVICE_SWI(0x1199, 0x9055)}, /* Netgear AirCard 341U */
155 {DEVICE_SWI(0x1199, 0x9056)}, /* Sierra Wireless Modem */
156 {DEVICE_SWI(0x1199, 0x9060)}, /* Sierra Wireless Modem */
157 {DEVICE_SWI(0x1199, 0x9061)}, /* Sierra Wireless Modem */
158 {DEVICE_SWI(0x1199, 0x9063)}, /* Sierra Wireless EM7305 */
159 {DEVICE_SWI(0x1199, 0x9070)}, /* Sierra Wireless MC74xx */
160 {DEVICE_SWI(0x1199, 0x9071)}, /* Sierra Wireless MC74xx */
161 {DEVICE_SWI(0x1199, 0x9078)}, /* Sierra Wireless EM74xx */
162 {DEVICE_SWI(0x1199, 0x9079)}, /* Sierra Wireless EM74xx */
163 {DEVICE_SWI(0x1199, 0x907a)}, /* Sierra Wireless EM74xx QDL */
164 {DEVICE_SWI(0x1199, 0x907b)}, /* Sierra Wireless EM74xx */
165 {DEVICE_SWI(0x1199, 0x9090)}, /* Sierra Wireless EM7565 QDL */
166 {DEVICE_SWI(0x1199, 0x9091)}, /* Sierra Wireless EM7565 */
167 {DEVICE_SWI(0x413c, 0x81a2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
168 {DEVICE_SWI(0x413c, 0x81a3)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
169 {DEVICE_SWI(0x413c, 0x81a4)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
170 {DEVICE_SWI(0x413c, 0x81a8)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
171 {DEVICE_SWI(0x413c, 0x81a9)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
172 {DEVICE_SWI(0x413c, 0x81b1)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
173 {DEVICE_SWI(0x413c, 0x81b3)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */
174 {DEVICE_SWI(0x413c, 0x81b5)}, /* Dell Wireless 5811e QDL */
175 {DEVICE_SWI(0x413c, 0x81b6)}, /* Dell Wireless 5811e QDL */
176 {DEVICE_SWI(0x413c, 0x81cb)}, /* Dell Wireless 5816e QDL */
177 {DEVICE_SWI(0x413c, 0x81cc)}, /* Dell Wireless 5816e */
178 {DEVICE_SWI(0x413c, 0x81cf)}, /* Dell Wireless 5819 */
179 {DEVICE_SWI(0x413c, 0x81d0)}, /* Dell Wireless 5819 */
180 {DEVICE_SWI(0x413c, 0x81d1)}, /* Dell Wireless 5818 */
181 {DEVICE_SWI(0x413c, 0x81d2)}, /* Dell Wireless 5818 */
182
183 /* Huawei devices */
184 {DEVICE_HWI(0x03f0, 0x581d)}, /* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */
185
186 { } /* Terminating entry */
187 };
188 MODULE_DEVICE_TABLE(usb, id_table);
189
190 static int handle_quectel_ec20(struct device *dev, int ifnum)
191 {
192 int altsetting = 0;
193
194 /*
195 * Quectel EC20 Mini PCIe LTE module layout:
196 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
197 * 1: NMEA
198 * 2: AT-capable modem port
199 * 3: Modem interface
200 * 4: NDIS
201 */
202 switch (ifnum) {
203 case 0:
204 dev_dbg(dev, "Quectel EC20 DM/DIAG interface found\n");
205 break;
206 case 1:
207 dev_dbg(dev, "Quectel EC20 NMEA GPS interface found\n");
208 break;
209 case 2:
210 case 3:
211 dev_dbg(dev, "Quectel EC20 Modem port found\n");
212 break;
213 case 4:
214 /* Don't claim the QMI/net interface */
215 altsetting = -1;
216 break;
217 }
218
219 return altsetting;
220 }
221
222 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
223 {
224 struct usb_host_interface *intf = serial->interface->cur_altsetting;
225 struct device *dev = &serial->dev->dev;
226 int retval = -ENODEV;
227 __u8 nintf;
228 __u8 ifnum;
229 int altsetting = -1;
230 bool sendsetup = false;
231
232 /* we only support vendor specific functions */
233 if (intf->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC)
234 goto done;
235
236 nintf = serial->dev->actconfig->desc.bNumInterfaces;
237 dev_dbg(dev, "Num Interfaces = %d\n", nintf);
238 ifnum = intf->desc.bInterfaceNumber;
239 dev_dbg(dev, "This Interface = %d\n", ifnum);
240
241 if (nintf == 1) {
242 /* QDL mode */
243 /* Gobi 2000 has a single altsetting, older ones have two */
244 if (serial->interface->num_altsetting == 2)
245 intf = &serial->interface->altsetting[1];
246 else if (serial->interface->num_altsetting > 2)
247 goto done;
248
249 if (intf->desc.bNumEndpoints == 2 &&
250 usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
251 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
252 dev_dbg(dev, "QDL port found\n");
253
254 if (serial->interface->num_altsetting == 1)
255 retval = 0; /* Success */
256 else
257 altsetting = 1;
258 }
259 goto done;
260
261 }
262
263 /* default to enabling interface */
264 altsetting = 0;
265
266 /*
267 * Composite mode; don't bind to the QMI/net interface as that
268 * gets handled by other drivers.
269 */
270
271 switch (id->driver_info) {
272 case QCSERIAL_G1K:
273 /*
274 * Gobi 1K USB layout:
275 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
276 * 1: serial port (doesn't respond)
277 * 2: AT-capable modem port
278 * 3: QMI/net
279 */
280 if (nintf < 3 || nintf > 4) {
281 dev_err(dev, "unknown number of interfaces: %d\n", nintf);
282 altsetting = -1;
283 goto done;
284 }
285
286 if (ifnum == 0) {
287 dev_dbg(dev, "Gobi 1K DM/DIAG interface found\n");
288 altsetting = 1;
289 } else if (ifnum == 2)
290 dev_dbg(dev, "Modem port found\n");
291 else
292 altsetting = -1;
293 break;
294 case QCSERIAL_G2K:
295 /* handle non-standard layouts */
296 if (nintf == 5 && id->idProduct == QUECTEL_EC20_PID) {
297 altsetting = handle_quectel_ec20(dev, ifnum);
298 goto done;
299 }
300
301 /*
302 * Gobi 2K+ USB layout:
303 * 0: QMI/net
304 * 1: DM/DIAG (use libqcdm from ModemManager for communication)
305 * 2: AT-capable modem port
306 * 3: NMEA
307 */
308 if (nintf < 3 || nintf > 4) {
309 dev_err(dev, "unknown number of interfaces: %d\n", nintf);
310 altsetting = -1;
311 goto done;
312 }
313
314 switch (ifnum) {
315 case 0:
316 /* Don't claim the QMI/net interface */
317 altsetting = -1;
318 break;
319 case 1:
320 dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n");
321 break;
322 case 2:
323 dev_dbg(dev, "Modem port found\n");
324 break;
325 case 3:
326 /*
327 * NMEA (serial line 9600 8N1)
328 * # echo "\$GPS_START" > /dev/ttyUSBx
329 * # echo "\$GPS_STOP" > /dev/ttyUSBx
330 */
331 dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
332 break;
333 }
334 break;
335 case QCSERIAL_SWI:
336 /*
337 * Sierra Wireless layout:
338 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
339 * 2: NMEA
340 * 3: AT-capable modem port
341 * 8: QMI/net
342 */
343 switch (ifnum) {
344 case 0:
345 dev_dbg(dev, "DM/DIAG interface found\n");
346 break;
347 case 2:
348 dev_dbg(dev, "NMEA GPS interface found\n");
349 sendsetup = true;
350 break;
351 case 3:
352 dev_dbg(dev, "Modem port found\n");
353 sendsetup = true;
354 break;
355 default:
356 /* don't claim any unsupported interface */
357 altsetting = -1;
358 break;
359 }
360 break;
361 case QCSERIAL_HWI:
362 /*
363 * Huawei devices map functions by subclass + protocol
364 * instead of interface numbers. The protocol identify
365 * a specific function, while the subclass indicate a
366 * specific firmware source
367 *
368 * This is a blacklist of functions known to be
369 * non-serial. The rest are assumed to be serial and
370 * will be handled by this driver
371 */
372 switch (intf->desc.bInterfaceProtocol) {
373 /* QMI combined (qmi_wwan) */
374 case 0x07:
375 case 0x37:
376 case 0x67:
377 /* QMI data (qmi_wwan) */
378 case 0x08:
379 case 0x38:
380 case 0x68:
381 /* QMI control (qmi_wwan) */
382 case 0x09:
383 case 0x39:
384 case 0x69:
385 /* NCM like (huawei_cdc_ncm) */
386 case 0x16:
387 case 0x46:
388 case 0x76:
389 altsetting = -1;
390 break;
391 default:
392 dev_dbg(dev, "Huawei type serial port found (%02x/%02x/%02x)\n",
393 intf->desc.bInterfaceClass,
394 intf->desc.bInterfaceSubClass,
395 intf->desc.bInterfaceProtocol);
396 }
397 break;
398 default:
399 dev_err(dev, "unsupported device layout type: %lu\n",
400 id->driver_info);
401 break;
402 }
403
404 done:
405 if (altsetting >= 0) {
406 retval = usb_set_interface(serial->dev, ifnum, altsetting);
407 if (retval < 0) {
408 dev_err(dev,
409 "Could not set interface, error %d\n",
410 retval);
411 retval = -ENODEV;
412 }
413 }
414
415 if (!retval)
416 usb_set_serial_data(serial, (void *)(unsigned long)sendsetup);
417
418 return retval;
419 }
420
421 static int qc_attach(struct usb_serial *serial)
422 {
423 struct usb_wwan_intf_private *data;
424 bool sendsetup;
425
426 data = kzalloc(sizeof(*data), GFP_KERNEL);
427 if (!data)
428 return -ENOMEM;
429
430 sendsetup = !!(unsigned long)(usb_get_serial_data(serial));
431 if (sendsetup)
432 data->use_send_setup = 1;
433
434 spin_lock_init(&data->susp_lock);
435
436 usb_set_serial_data(serial, data);
437
438 return 0;
439 }
440
441 static void qc_release(struct usb_serial *serial)
442 {
443 struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
444
445 usb_set_serial_data(serial, NULL);
446 kfree(priv);
447 }
448
449 static struct usb_serial_driver qcdevice = {
450 .driver = {
451 .owner = THIS_MODULE,
452 .name = "qcserial",
453 },
454 .description = "Qualcomm USB modem",
455 .id_table = id_table,
456 .num_ports = 1,
457 .probe = qcprobe,
458 .open = usb_wwan_open,
459 .close = usb_wwan_close,
460 .dtr_rts = usb_wwan_dtr_rts,
461 .write = usb_wwan_write,
462 .write_room = usb_wwan_write_room,
463 .chars_in_buffer = usb_wwan_chars_in_buffer,
464 .tiocmget = usb_wwan_tiocmget,
465 .tiocmset = usb_wwan_tiocmset,
466 .attach = qc_attach,
467 .release = qc_release,
468 .port_probe = usb_wwan_port_probe,
469 .port_remove = usb_wwan_port_remove,
470 #ifdef CONFIG_PM
471 .suspend = usb_wwan_suspend,
472 .resume = usb_wwan_resume,
473 #endif
474 };
475
476 static struct usb_serial_driver * const serial_drivers[] = {
477 &qcdevice, NULL
478 };
479
480 module_usb_serial_driver(serial_drivers, id_table);
481
482 MODULE_AUTHOR(DRIVER_AUTHOR);
483 MODULE_DESCRIPTION(DRIVER_DESC);
484 MODULE_LICENSE("GPL v2");