Version:  2.0.40 2.2.26 2.4.37 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10

Linux/drivers/usb/serial/qcserial.c

  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(0x413c, 0x81a6)},   /* Dell DW5570 QDL (MC8805) */
128         {USB_DEVICE(0x1199, 0x68a4)},   /* Sierra Wireless QDL */
129         {USB_DEVICE(0x1199, 0x68a5)},   /* Sierra Wireless Modem */
130         {USB_DEVICE(0x1199, 0x68a8)},   /* Sierra Wireless QDL */
131         {USB_DEVICE(0x1199, 0x68a9)},   /* Sierra Wireless Modem */
132         {USB_DEVICE(0x1199, 0x9010)},   /* Sierra Wireless Gobi 3000 QDL */
133         {USB_DEVICE(0x1199, 0x9012)},   /* Sierra Wireless Gobi 3000 QDL */
134         {USB_DEVICE(0x1199, 0x9013)},   /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
135         {USB_DEVICE(0x1199, 0x9014)},   /* Sierra Wireless Gobi 3000 QDL */
136         {USB_DEVICE(0x1199, 0x9015)},   /* Sierra Wireless Gobi 3000 Modem device */
137         {USB_DEVICE(0x1199, 0x9018)},   /* Sierra Wireless Gobi 3000 QDL */
138         {USB_DEVICE(0x1199, 0x9019)},   /* Sierra Wireless Gobi 3000 Modem device */
139         {USB_DEVICE(0x1199, 0x901b)},   /* Sierra Wireless MC7770 */
140         {USB_DEVICE(0x12D1, 0x14F0)},   /* Sony Gobi 3000 QDL */
141         {USB_DEVICE(0x12D1, 0x14F1)},   /* Sony Gobi 3000 Composite */
142         {USB_DEVICE(0x0AF0, 0x8120)},   /* Option GTM681W */
143 
144         /* non-Gobi Sierra Wireless devices */
145         {DEVICE_SWI(0x03f0, 0x4e1d)},   /* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
146         {DEVICE_SWI(0x0f3d, 0x68a2)},   /* Sierra Wireless MC7700 */
147         {DEVICE_SWI(0x114f, 0x68a2)},   /* Sierra Wireless MC7750 */
148         {DEVICE_SWI(0x1199, 0x68a2)},   /* Sierra Wireless MC7710 */
149         {DEVICE_SWI(0x1199, 0x68c0)},   /* Sierra Wireless MC7304/MC7354 */
150         {DEVICE_SWI(0x1199, 0x901c)},   /* Sierra Wireless EM7700 */
151         {DEVICE_SWI(0x1199, 0x901f)},   /* Sierra Wireless EM7355 */
152         {DEVICE_SWI(0x1199, 0x9040)},   /* Sierra Wireless Modem */
153         {DEVICE_SWI(0x1199, 0x9041)},   /* Sierra Wireless MC7305/MC7355 */
154         {DEVICE_SWI(0x1199, 0x9051)},   /* Netgear AirCard 340U */
155         {DEVICE_SWI(0x1199, 0x9053)},   /* Sierra Wireless Modem */
156         {DEVICE_SWI(0x1199, 0x9054)},   /* Sierra Wireless Modem */
157         {DEVICE_SWI(0x1199, 0x9055)},   /* Netgear AirCard 341U */
158         {DEVICE_SWI(0x1199, 0x9056)},   /* Sierra Wireless Modem */
159         {DEVICE_SWI(0x1199, 0x9060)},   /* Sierra Wireless Modem */
160         {DEVICE_SWI(0x1199, 0x9061)},   /* Sierra Wireless Modem */
161         {DEVICE_SWI(0x1199, 0x9070)},   /* Sierra Wireless MC74xx */
162         {DEVICE_SWI(0x1199, 0x9071)},   /* Sierra Wireless MC74xx */
163         {DEVICE_SWI(0x1199, 0x9078)},   /* Sierra Wireless EM74xx */
164         {DEVICE_SWI(0x1199, 0x9079)},   /* Sierra Wireless EM74xx */
165         {DEVICE_SWI(0x413c, 0x81a2)},   /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
166         {DEVICE_SWI(0x413c, 0x81a3)},   /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
167         {DEVICE_SWI(0x413c, 0x81a4)},   /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
168         {DEVICE_SWI(0x413c, 0x81a8)},   /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
169         {DEVICE_SWI(0x413c, 0x81a9)},   /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
170         {DEVICE_SWI(0x413c, 0x81b1)},   /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
171         {DEVICE_SWI(0x413c, 0x81b3)},   /* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */
172 
173         /* Huawei devices */
174         {DEVICE_HWI(0x03f0, 0x581d)},   /* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */
175 
176         { }                             /* Terminating entry */
177 };
178 MODULE_DEVICE_TABLE(usb, id_table);
179 
180 static int handle_quectel_ec20(struct device *dev, int ifnum)
181 {
182         int altsetting = 0;
183 
184         /*
185          * Quectel EC20 Mini PCIe LTE module layout:
186          * 0: DM/DIAG (use libqcdm from ModemManager for communication)
187          * 1: NMEA
188          * 2: AT-capable modem port
189          * 3: Modem interface
190          * 4: NDIS
191          */
192         switch (ifnum) {
193         case 0:
194                 dev_dbg(dev, "Quectel EC20 DM/DIAG interface found\n");
195                 break;
196         case 1:
197                 dev_dbg(dev, "Quectel EC20 NMEA GPS interface found\n");
198                 break;
199         case 2:
200         case 3:
201                 dev_dbg(dev, "Quectel EC20 Modem port found\n");
202                 break;
203         case 4:
204                 /* Don't claim the QMI/net interface */
205                 altsetting = -1;
206                 break;
207         }
208 
209         return altsetting;
210 }
211 
212 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
213 {
214         struct usb_host_interface *intf = serial->interface->cur_altsetting;
215         struct device *dev = &serial->dev->dev;
216         int retval = -ENODEV;
217         __u8 nintf;
218         __u8 ifnum;
219         int altsetting = -1;
220         bool sendsetup = false;
221 
222         /* we only support vendor specific functions */
223         if (intf->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC)
224                 goto done;
225 
226         nintf = serial->dev->actconfig->desc.bNumInterfaces;
227         dev_dbg(dev, "Num Interfaces = %d\n", nintf);
228         ifnum = intf->desc.bInterfaceNumber;
229         dev_dbg(dev, "This Interface = %d\n", ifnum);
230 
231         if (nintf == 1) {
232                 /* QDL mode */
233                 /* Gobi 2000 has a single altsetting, older ones have two */
234                 if (serial->interface->num_altsetting == 2)
235                         intf = &serial->interface->altsetting[1];
236                 else if (serial->interface->num_altsetting > 2)
237                         goto done;
238 
239                 if (intf->desc.bNumEndpoints == 2 &&
240                     usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
241                     usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
242                         dev_dbg(dev, "QDL port found\n");
243 
244                         if (serial->interface->num_altsetting == 1)
245                                 retval = 0; /* Success */
246                         else
247                                 altsetting = 1;
248                 }
249                 goto done;
250 
251         }
252 
253         /* default to enabling interface */
254         altsetting = 0;
255 
256         /*
257          * Composite mode; don't bind to the QMI/net interface as that
258          * gets handled by other drivers.
259          */
260 
261         switch (id->driver_info) {
262         case QCSERIAL_G1K:
263                 /*
264                  * Gobi 1K USB layout:
265                  * 0: DM/DIAG (use libqcdm from ModemManager for communication)
266                  * 1: serial port (doesn't respond)
267                  * 2: AT-capable modem port
268                  * 3: QMI/net
269                  */
270                 if (nintf < 3 || nintf > 4) {
271                         dev_err(dev, "unknown number of interfaces: %d\n", nintf);
272                         altsetting = -1;
273                         goto done;
274                 }
275 
276                 if (ifnum == 0) {
277                         dev_dbg(dev, "Gobi 1K DM/DIAG interface found\n");
278                         altsetting = 1;
279                 } else if (ifnum == 2)
280                         dev_dbg(dev, "Modem port found\n");
281                 else
282                         altsetting = -1;
283                 break;
284         case QCSERIAL_G2K:
285                 /* handle non-standard layouts */
286                 if (nintf == 5 && id->idProduct == QUECTEL_EC20_PID) {
287                         altsetting = handle_quectel_ec20(dev, ifnum);
288                         goto done;
289                 }
290 
291                 /*
292                  * Gobi 2K+ USB layout:
293                  * 0: QMI/net
294                  * 1: DM/DIAG (use libqcdm from ModemManager for communication)
295                  * 2: AT-capable modem port
296                  * 3: NMEA
297                  */
298                 if (nintf < 3 || nintf > 4) {
299                         dev_err(dev, "unknown number of interfaces: %d\n", nintf);
300                         altsetting = -1;
301                         goto done;
302                 }
303 
304                 switch (ifnum) {
305                 case 0:
306                         /* Don't claim the QMI/net interface */
307                         altsetting = -1;
308                         break;
309                 case 1:
310                         dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n");
311                         break;
312                 case 2:
313                         dev_dbg(dev, "Modem port found\n");
314                         break;
315                 case 3:
316                         /*
317                          * NMEA (serial line 9600 8N1)
318                          * # echo "\$GPS_START" > /dev/ttyUSBx
319                          * # echo "\$GPS_STOP"  > /dev/ttyUSBx
320                          */
321                         dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
322                         break;
323                 }
324                 break;
325         case QCSERIAL_SWI:
326                 /*
327                  * Sierra Wireless layout:
328                  * 0: DM/DIAG (use libqcdm from ModemManager for communication)
329                  * 2: NMEA
330                  * 3: AT-capable modem port
331                  * 8: QMI/net
332                  */
333                 switch (ifnum) {
334                 case 0:
335                         dev_dbg(dev, "DM/DIAG interface found\n");
336                         break;
337                 case 2:
338                         dev_dbg(dev, "NMEA GPS interface found\n");
339                         break;
340                 case 3:
341                         dev_dbg(dev, "Modem port found\n");
342                         sendsetup = true;
343                         break;
344                 default:
345                         /* don't claim any unsupported interface */
346                         altsetting = -1;
347                         break;
348                 }
349                 break;
350         case QCSERIAL_HWI:
351                 /*
352                  * Huawei devices map functions by subclass + protocol
353                  * instead of interface numbers. The protocol identify
354                  * a specific function, while the subclass indicate a
355                  * specific firmware source
356                  *
357                  * This is a blacklist of functions known to be
358                  * non-serial.  The rest are assumed to be serial and
359                  * will be handled by this driver
360                  */
361                 switch (intf->desc.bInterfaceProtocol) {
362                         /* QMI combined (qmi_wwan) */
363                 case 0x07:
364                 case 0x37:
365                 case 0x67:
366                         /* QMI data (qmi_wwan) */
367                 case 0x08:
368                 case 0x38:
369                 case 0x68:
370                         /* QMI control (qmi_wwan) */
371                 case 0x09:
372                 case 0x39:
373                 case 0x69:
374                         /* NCM like (huawei_cdc_ncm) */
375                 case 0x16:
376                 case 0x46:
377                 case 0x76:
378                         altsetting = -1;
379                         break;
380                 default:
381                         dev_dbg(dev, "Huawei type serial port found (%02x/%02x/%02x)\n",
382                                 intf->desc.bInterfaceClass,
383                                 intf->desc.bInterfaceSubClass,
384                                 intf->desc.bInterfaceProtocol);
385                 }
386                 break;
387         default:
388                 dev_err(dev, "unsupported device layout type: %lu\n",
389                         id->driver_info);
390                 break;
391         }
392 
393 done:
394         if (altsetting >= 0) {
395                 retval = usb_set_interface(serial->dev, ifnum, altsetting);
396                 if (retval < 0) {
397                         dev_err(dev,
398                                 "Could not set interface, error %d\n",
399                                 retval);
400                         retval = -ENODEV;
401                 }
402         }
403 
404         if (!retval)
405                 usb_set_serial_data(serial, (void *)(unsigned long)sendsetup);
406 
407         return retval;
408 }
409 
410 static int qc_attach(struct usb_serial *serial)
411 {
412         struct usb_wwan_intf_private *data;
413         bool sendsetup;
414 
415         data = kzalloc(sizeof(*data), GFP_KERNEL);
416         if (!data)
417                 return -ENOMEM;
418 
419         sendsetup = !!(unsigned long)(usb_get_serial_data(serial));
420         if (sendsetup)
421                 data->use_send_setup = 1;
422 
423         spin_lock_init(&data->susp_lock);
424 
425         usb_set_serial_data(serial, data);
426 
427         return 0;
428 }
429 
430 static void qc_release(struct usb_serial *serial)
431 {
432         struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
433 
434         usb_set_serial_data(serial, NULL);
435         kfree(priv);
436 }
437 
438 static struct usb_serial_driver qcdevice = {
439         .driver = {
440                 .owner     = THIS_MODULE,
441                 .name      = "qcserial",
442         },
443         .description         = "Qualcomm USB modem",
444         .id_table            = id_table,
445         .num_ports           = 1,
446         .probe               = qcprobe,
447         .open                = usb_wwan_open,
448         .close               = usb_wwan_close,
449         .dtr_rts             = usb_wwan_dtr_rts,
450         .write               = usb_wwan_write,
451         .write_room          = usb_wwan_write_room,
452         .chars_in_buffer     = usb_wwan_chars_in_buffer,
453         .attach              = qc_attach,
454         .release             = qc_release,
455         .port_probe          = usb_wwan_port_probe,
456         .port_remove         = usb_wwan_port_remove,
457 #ifdef CONFIG_PM
458         .suspend             = usb_wwan_suspend,
459         .resume              = usb_wwan_resume,
460 #endif
461 };
462 
463 static struct usb_serial_driver * const serial_drivers[] = {
464         &qcdevice, NULL
465 };
466 
467 module_usb_serial_driver(serial_drivers, id_table);
468 
469 MODULE_AUTHOR(DRIVER_AUTHOR);
470 MODULE_DESCRIPTION(DRIVER_DESC);
471 MODULE_LICENSE("GPL v2");
472 

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