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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(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 };
177 MODULE_DEVICE_TABLE(usb, id_table);
178 
179 static 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 
211 static 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 
392 done:
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 
409 static 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 
429 static 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 
437 static 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 
462 static struct usb_serial_driver * const serial_drivers[] = {
463         &qcdevice, NULL
464 };
465 
466 module_usb_serial_driver(serial_drivers, id_table);
467 
468 MODULE_AUTHOR(DRIVER_AUTHOR);
469 MODULE_DESCRIPTION(DRIVER_DESC);
470 MODULE_LICENSE("GPL v2");
471 

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