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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 */
28enum 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
42static 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 */
161 {DEVICE_SWI(0x1199, 0x9071)}, /* Sierra Wireless MC74xx */
162 {DEVICE_SWI(0x1199, 0x9078)}, /* Sierra Wireless EM74xx */
163 {DEVICE_SWI(0x1199, 0x9079)}, /* Sierra Wireless EM74xx */
164 {DEVICE_SWI(0x413c, 0x81a2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
165 {DEVICE_SWI(0x413c, 0x81a3)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
166 {DEVICE_SWI(0x413c, 0x81a4)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
167 {DEVICE_SWI(0x413c, 0x81a8)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
168 {DEVICE_SWI(0x413c, 0x81a9)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
169 {DEVICE_SWI(0x413c, 0x81b1)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
170 {DEVICE_SWI(0x413c, 0x81b3)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */
171
172 /* Huawei devices */
173 {DEVICE_HWI(0x03f0, 0x581d)}, /* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */
174
175 { } /* Terminating entry */
176};
177MODULE_DEVICE_TABLE(usb, id_table);
178
179static int handle_quectel_ec20(struct device *dev, int ifnum)
180{
181 int altsetting = 0;
182
183 /*
184 * Quectel EC20 Mini PCIe LTE module layout:
185 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
186 * 1: NMEA
187 * 2: AT-capable modem port
188 * 3: Modem interface
189 * 4: NDIS
190 */
191 switch (ifnum) {
192 case 0:
193 dev_dbg(dev, "Quectel EC20 DM/DIAG interface found\n");
194 break;
195 case 1:
196 dev_dbg(dev, "Quectel EC20 NMEA GPS interface found\n");
197 break;
198 case 2:
199 case 3:
200 dev_dbg(dev, "Quectel EC20 Modem port found\n");
201 break;
202 case 4:
203 /* Don't claim the QMI/net interface */
204 altsetting = -1;
205 break;
206 }
207
208 return altsetting;
209}
210
211static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
212{
213 struct usb_host_interface *intf = serial->interface->cur_altsetting;
214 struct device *dev = &serial->dev->dev;
215 int retval = -ENODEV;
216 __u8 nintf;
217 __u8 ifnum;
218 int altsetting = -1;
219 bool sendsetup = false;
220
221 /* we only support vendor specific functions */
222 if (intf->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC)
223 goto done;
224
225 nintf = serial->dev->actconfig->desc.bNumInterfaces;
226 dev_dbg(dev, "Num Interfaces = %d\n", nintf);
227 ifnum = intf->desc.bInterfaceNumber;
228 dev_dbg(dev, "This Interface = %d\n", ifnum);
229
230 if (nintf == 1) {
231 /* QDL mode */
232 /* Gobi 2000 has a single altsetting, older ones have two */
233 if (serial->interface->num_altsetting == 2)
234 intf = &serial->interface->altsetting[1];
235 else if (serial->interface->num_altsetting > 2)
236 goto done;
237
238 if (intf->desc.bNumEndpoints == 2 &&
239 usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
240 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
241 dev_dbg(dev, "QDL port found\n");
242
243 if (serial->interface->num_altsetting == 1)
244 retval = 0; /* Success */
245 else
246 altsetting = 1;
247 }
248 goto done;
249
250 }
251
252 /* default to enabling interface */
253 altsetting = 0;
254
255 /*
256 * Composite mode; don't bind to the QMI/net interface as that
257 * gets handled by other drivers.
258 */
259
260 switch (id->driver_info) {
261 case QCSERIAL_G1K:
262 /*
263 * Gobi 1K USB layout:
264 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
265 * 1: serial port (doesn't respond)
266 * 2: AT-capable modem port
267 * 3: QMI/net
268 */
269 if (nintf < 3 || nintf > 4) {
270 dev_err(dev, "unknown number of interfaces: %d\n", nintf);
271 altsetting = -1;
272 goto done;
273 }
274
275 if (ifnum == 0) {
276 dev_dbg(dev, "Gobi 1K DM/DIAG interface found\n");
277 altsetting = 1;
278 } else if (ifnum == 2)
279 dev_dbg(dev, "Modem port found\n");
280 else
281 altsetting = -1;
282 break;
283 case QCSERIAL_G2K:
284 /* handle non-standard layouts */
285 if (nintf == 5 && id->idProduct == QUECTEL_EC20_PID) {
286 altsetting = handle_quectel_ec20(dev, ifnum);
287 goto done;
288 }
289
290 /*
291 * Gobi 2K+ USB layout:
292 * 0: QMI/net
293 * 1: DM/DIAG (use libqcdm from ModemManager for communication)
294 * 2: AT-capable modem port
295 * 3: NMEA
296 */
297 if (nintf < 3 || nintf > 4) {
298 dev_err(dev, "unknown number of interfaces: %d\n", nintf);
299 altsetting = -1;
300 goto done;
301 }
302
303 switch (ifnum) {
304 case 0:
305 /* Don't claim the QMI/net interface */
306 altsetting = -1;
307 break;
308 case 1:
309 dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n");
310 break;
311 case 2:
312 dev_dbg(dev, "Modem port found\n");
313 break;
314 case 3:
315 /*
316 * NMEA (serial line 9600 8N1)
317 * # echo "\$GPS_START" > /dev/ttyUSBx
318 * # echo "\$GPS_STOP" > /dev/ttyUSBx
319 */
320 dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
321 break;
322 }
323 break;
324 case QCSERIAL_SWI:
325 /*
326 * Sierra Wireless layout:
327 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
328 * 2: NMEA
329 * 3: AT-capable modem port
330 * 8: QMI/net
331 */
332 switch (ifnum) {
333 case 0:
334 dev_dbg(dev, "DM/DIAG interface found\n");
335 break;
336 case 2:
337 dev_dbg(dev, "NMEA GPS interface found\n");
338 break;
339 case 3:
340 dev_dbg(dev, "Modem port found\n");
341 sendsetup = true;
342 break;
343 default:
344 /* don't claim any unsupported interface */
345 altsetting = -1;
346 break;
347 }
348 break;
349 case QCSERIAL_HWI:
350 /*
351 * Huawei devices map functions by subclass + protocol
352 * instead of interface numbers. The protocol identify
353 * a specific function, while the subclass indicate a
354 * specific firmware source
355 *
356 * This is a blacklist of functions known to be
357 * non-serial. The rest are assumed to be serial and
358 * will be handled by this driver
359 */
360 switch (intf->desc.bInterfaceProtocol) {
361 /* QMI combined (qmi_wwan) */
362 case 0x07:
363 case 0x37:
364 case 0x67:
365 /* QMI data (qmi_wwan) */
366 case 0x08:
367 case 0x38:
368 case 0x68:
369 /* QMI control (qmi_wwan) */
370 case 0x09:
371 case 0x39:
372 case 0x69:
373 /* NCM like (huawei_cdc_ncm) */
374 case 0x16:
375 case 0x46:
376 case 0x76:
377 altsetting = -1;
378 break;
379 default:
380 dev_dbg(dev, "Huawei type serial port found (%02x/%02x/%02x)\n",
381 intf->desc.bInterfaceClass,
382 intf->desc.bInterfaceSubClass,
383 intf->desc.bInterfaceProtocol);
384 }
385 break;
386 default:
387 dev_err(dev, "unsupported device layout type: %lu\n",
388 id->driver_info);
389 break;
390 }
391
392done:
393 if (altsetting >= 0) {
394 retval = usb_set_interface(serial->dev, ifnum, altsetting);
395 if (retval < 0) {
396 dev_err(dev,
397 "Could not set interface, error %d\n",
398 retval);
399 retval = -ENODEV;
400 }
401 }
402
403 if (!retval)
404 usb_set_serial_data(serial, (void *)(unsigned long)sendsetup);
405
406 return retval;
407}
408
409static int qc_attach(struct usb_serial *serial)
410{
411 struct usb_wwan_intf_private *data;
412 bool sendsetup;
413
414 data = kzalloc(sizeof(*data), GFP_KERNEL);
415 if (!data)
416 return -ENOMEM;
417
418 sendsetup = !!(unsigned long)(usb_get_serial_data(serial));
419 if (sendsetup)
420 data->use_send_setup = 1;
421
422 spin_lock_init(&data->susp_lock);
423
424 usb_set_serial_data(serial, data);
425
426 return 0;
427}
428
429static void qc_release(struct usb_serial *serial)
430{
431 struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
432
433 usb_set_serial_data(serial, NULL);
434 kfree(priv);
435}
436
437static struct usb_serial_driver qcdevice = {
438 .driver = {
439 .owner = THIS_MODULE,
440 .name = "qcserial",
441 },
442 .description = "Qualcomm USB modem",
443 .id_table = id_table,
444 .num_ports = 1,
445 .probe = qcprobe,
446 .open = usb_wwan_open,
447 .close = usb_wwan_close,
448 .dtr_rts = usb_wwan_dtr_rts,
449 .write = usb_wwan_write,
450 .write_room = usb_wwan_write_room,
451 .chars_in_buffer = usb_wwan_chars_in_buffer,
452 .attach = qc_attach,
453 .release = qc_release,
454 .port_probe = usb_wwan_port_probe,
455 .port_remove = usb_wwan_port_remove,
456#ifdef CONFIG_PM
457 .suspend = usb_wwan_suspend,
458 .resume = usb_wwan_resume,
459#endif
460};
461
462static struct usb_serial_driver * const serial_drivers[] = {
463 &qcdevice, NULL
464};
465
466module_usb_serial_driver(serial_drivers, id_table);
467
468MODULE_AUTHOR(DRIVER_AUTHOR);
469MODULE_DESCRIPTION(DRIVER_DESC);
470MODULE_LICENSE("GPL v2");
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 */
24enum 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
38static 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, 0x9062)}, /* Sierra Wireless EM7305 QDL */
159 {DEVICE_SWI(0x1199, 0x9063)}, /* Sierra Wireless EM7305 */
160 {DEVICE_SWI(0x1199, 0x9070)}, /* Sierra Wireless MC74xx */
161 {DEVICE_SWI(0x1199, 0x9071)}, /* Sierra Wireless MC74xx */
162 {DEVICE_SWI(0x1199, 0x9078)}, /* Sierra Wireless EM74xx */
163 {DEVICE_SWI(0x1199, 0x9079)}, /* Sierra Wireless EM74xx */
164 {DEVICE_SWI(0x1199, 0x907a)}, /* Sierra Wireless EM74xx QDL */
165 {DEVICE_SWI(0x1199, 0x907b)}, /* Sierra Wireless EM74xx */
166 {DEVICE_SWI(0x1199, 0x9090)}, /* Sierra Wireless EM7565 QDL */
167 {DEVICE_SWI(0x1199, 0x9091)}, /* Sierra Wireless EM7565 */
168 {DEVICE_SWI(0x413c, 0x81a2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
169 {DEVICE_SWI(0x413c, 0x81a3)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
170 {DEVICE_SWI(0x413c, 0x81a4)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
171 {DEVICE_SWI(0x413c, 0x81a8)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
172 {DEVICE_SWI(0x413c, 0x81a9)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
173 {DEVICE_SWI(0x413c, 0x81b1)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
174 {DEVICE_SWI(0x413c, 0x81b3)}, /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */
175 {DEVICE_SWI(0x413c, 0x81b5)}, /* Dell Wireless 5811e QDL */
176 {DEVICE_SWI(0x413c, 0x81b6)}, /* Dell Wireless 5811e QDL */
177 {DEVICE_SWI(0x413c, 0x81cb)}, /* Dell Wireless 5816e QDL */
178 {DEVICE_SWI(0x413c, 0x81cc)}, /* Dell Wireless 5816e */
179 {DEVICE_SWI(0x413c, 0x81cf)}, /* Dell Wireless 5819 */
180 {DEVICE_SWI(0x413c, 0x81d0)}, /* Dell Wireless 5819 */
181 {DEVICE_SWI(0x413c, 0x81d1)}, /* Dell Wireless 5818 */
182 {DEVICE_SWI(0x413c, 0x81d2)}, /* Dell Wireless 5818 */
183
184 /* Huawei devices */
185 {DEVICE_HWI(0x03f0, 0x581d)}, /* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */
186
187 { } /* Terminating entry */
188};
189MODULE_DEVICE_TABLE(usb, id_table);
190
191static int handle_quectel_ec20(struct device *dev, int ifnum)
192{
193 int altsetting = 0;
194
195 /*
196 * Quectel EC20 Mini PCIe LTE module layout:
197 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
198 * 1: NMEA
199 * 2: AT-capable modem port
200 * 3: Modem interface
201 * 4: NDIS
202 */
203 switch (ifnum) {
204 case 0:
205 dev_dbg(dev, "Quectel EC20 DM/DIAG interface found\n");
206 break;
207 case 1:
208 dev_dbg(dev, "Quectel EC20 NMEA GPS interface found\n");
209 break;
210 case 2:
211 case 3:
212 dev_dbg(dev, "Quectel EC20 Modem port found\n");
213 break;
214 case 4:
215 /* Don't claim the QMI/net interface */
216 altsetting = -1;
217 break;
218 }
219
220 return altsetting;
221}
222
223static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
224{
225 struct usb_host_interface *intf = serial->interface->cur_altsetting;
226 struct device *dev = &serial->dev->dev;
227 int retval = -ENODEV;
228 __u8 nintf;
229 __u8 ifnum;
230 int altsetting = -1;
231 bool sendsetup = false;
232
233 /* we only support vendor specific functions */
234 if (intf->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC)
235 goto done;
236
237 nintf = serial->dev->actconfig->desc.bNumInterfaces;
238 dev_dbg(dev, "Num Interfaces = %d\n", nintf);
239 ifnum = intf->desc.bInterfaceNumber;
240 dev_dbg(dev, "This Interface = %d\n", ifnum);
241
242 if (nintf == 1) {
243 /* QDL mode */
244 /* Gobi 2000 has a single altsetting, older ones have two */
245 if (serial->interface->num_altsetting == 2)
246 intf = &serial->interface->altsetting[1];
247 else if (serial->interface->num_altsetting > 2)
248 goto done;
249
250 if (intf->desc.bNumEndpoints == 2 &&
251 usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
252 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
253 dev_dbg(dev, "QDL port found\n");
254
255 if (serial->interface->num_altsetting == 1)
256 retval = 0; /* Success */
257 else
258 altsetting = 1;
259 }
260 goto done;
261
262 }
263
264 /* default to enabling interface */
265 altsetting = 0;
266
267 /*
268 * Composite mode; don't bind to the QMI/net interface as that
269 * gets handled by other drivers.
270 */
271
272 switch (id->driver_info) {
273 case QCSERIAL_G1K:
274 /*
275 * Gobi 1K USB layout:
276 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
277 * 1: serial port (doesn't respond)
278 * 2: AT-capable modem port
279 * 3: QMI/net
280 */
281 if (nintf < 3 || nintf > 4) {
282 dev_err(dev, "unknown number of interfaces: %d\n", nintf);
283 altsetting = -1;
284 goto done;
285 }
286
287 if (ifnum == 0) {
288 dev_dbg(dev, "Gobi 1K DM/DIAG interface found\n");
289 altsetting = 1;
290 } else if (ifnum == 2)
291 dev_dbg(dev, "Modem port found\n");
292 else
293 altsetting = -1;
294 break;
295 case QCSERIAL_G2K:
296 /* handle non-standard layouts */
297 if (nintf == 5 && id->idProduct == QUECTEL_EC20_PID) {
298 altsetting = handle_quectel_ec20(dev, ifnum);
299 goto done;
300 }
301
302 /*
303 * Gobi 2K+ USB layout:
304 * 0: QMI/net
305 * 1: DM/DIAG (use libqcdm from ModemManager for communication)
306 * 2: AT-capable modem port
307 * 3: NMEA
308 */
309 if (nintf < 3 || nintf > 4) {
310 dev_err(dev, "unknown number of interfaces: %d\n", nintf);
311 altsetting = -1;
312 goto done;
313 }
314
315 switch (ifnum) {
316 case 0:
317 /* Don't claim the QMI/net interface */
318 altsetting = -1;
319 break;
320 case 1:
321 dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n");
322 break;
323 case 2:
324 dev_dbg(dev, "Modem port found\n");
325 break;
326 case 3:
327 /*
328 * NMEA (serial line 9600 8N1)
329 * # echo "\$GPS_START" > /dev/ttyUSBx
330 * # echo "\$GPS_STOP" > /dev/ttyUSBx
331 */
332 dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
333 break;
334 }
335 break;
336 case QCSERIAL_SWI:
337 /*
338 * Sierra Wireless layout:
339 * 0: DM/DIAG (use libqcdm from ModemManager for communication)
340 * 2: NMEA
341 * 3: AT-capable modem port
342 * 8: QMI/net
343 */
344 switch (ifnum) {
345 case 0:
346 dev_dbg(dev, "DM/DIAG interface found\n");
347 break;
348 case 2:
349 dev_dbg(dev, "NMEA GPS interface found\n");
350 sendsetup = true;
351 break;
352 case 3:
353 dev_dbg(dev, "Modem port found\n");
354 sendsetup = true;
355 break;
356 default:
357 /* don't claim any unsupported interface */
358 altsetting = -1;
359 break;
360 }
361 break;
362 case QCSERIAL_HWI:
363 /*
364 * Huawei devices map functions by subclass + protocol
365 * instead of interface numbers. The protocol identify
366 * a specific function, while the subclass indicate a
367 * specific firmware source
368 *
369 * This is a list of functions known to be non-serial. The rest
370 * are assumed to be serial and 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
404done:
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
421static 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
441static 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
449static 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
476static struct usb_serial_driver * const serial_drivers[] = {
477 &qcdevice, NULL
478};
479
480module_usb_serial_driver(serial_drivers, id_table);
481
482MODULE_AUTHOR(DRIVER_AUTHOR);
483MODULE_DESCRIPTION(DRIVER_DESC);
484MODULE_LICENSE("GPL v2");