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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
28enum qcserial_layouts {
29 QCSERIAL_G2K = 0,
30 QCSERIAL_G1K = 1,
31 QCSERIAL_SWI = 2,
32 QCSERIAL_HWI = 3,
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
44 {DEVICE_G1K(0x05c6, 0x9211)},
45 {DEVICE_G1K(0x05c6, 0x9212)},
46 {DEVICE_G1K(0x03f0, 0x1f1d)},
47 {DEVICE_G1K(0x03f0, 0x201d)},
48 {DEVICE_G1K(0x04da, 0x250d)},
49 {DEVICE_G1K(0x04da, 0x250c)},
50 {DEVICE_G1K(0x413c, 0x8172)},
51 {DEVICE_G1K(0x413c, 0x8171)},
52 {DEVICE_G1K(0x1410, 0xa001)},
53 {DEVICE_G1K(0x1410, 0xa002)},
54 {DEVICE_G1K(0x1410, 0xa003)},
55 {DEVICE_G1K(0x1410, 0xa004)},
56 {DEVICE_G1K(0x1410, 0xa005)},
57 {DEVICE_G1K(0x1410, 0xa006)},
58 {DEVICE_G1K(0x1410, 0xa007)},
59 {DEVICE_G1K(0x1410, 0xa008)},
60 {DEVICE_G1K(0x0b05, 0x1776)},
61 {DEVICE_G1K(0x0b05, 0x1774)},
62 {DEVICE_G1K(0x19d2, 0xfff3)},
63 {DEVICE_G1K(0x19d2, 0xfff2)},
64 {DEVICE_G1K(0x1557, 0x0a80)},
65 {DEVICE_G1K(0x05c6, 0x9001)},
66 {DEVICE_G1K(0x05c6, 0x9002)},
67 {DEVICE_G1K(0x05c6, 0x9202)},
68 {DEVICE_G1K(0x05c6, 0x9203)},
69 {DEVICE_G1K(0x05c6, 0x9222)},
70 {DEVICE_G1K(0x05c6, 0x9008)},
71 {DEVICE_G1K(0x05c6, 0x9009)},
72 {DEVICE_G1K(0x05c6, 0x9201)},
73 {DEVICE_G1K(0x05c6, 0x9221)},
74 {DEVICE_G1K(0x05c6, 0x9231)},
75 {DEVICE_G1K(0x1f45, 0x0001)},
76 {DEVICE_G1K(0x1bc7, 0x900e)},
77
78
79 {USB_DEVICE(0x1410, 0xa010)},
80 {USB_DEVICE(0x1410, 0xa011)},
81 {USB_DEVICE(0x1410, 0xa012)},
82 {USB_DEVICE(0x1410, 0xa013)},
83 {USB_DEVICE(0x1410, 0xa014)},
84 {USB_DEVICE(0x413c, 0x8185)},
85 {USB_DEVICE(0x413c, 0x8186)},
86 {USB_DEVICE(0x05c6, 0x9208)},
87 {USB_DEVICE(0x05c6, 0x920b)},
88 {USB_DEVICE(0x05c6, 0x9224)},
89 {USB_DEVICE(0x05c6, 0x9225)},
90 {USB_DEVICE(0x05c6, 0x9244)},
91 {USB_DEVICE(0x05c6, 0x9245)},
92 {USB_DEVICE(0x03f0, 0x241d)},
93 {USB_DEVICE(0x03f0, 0x251d)},
94 {USB_DEVICE(0x05c6, 0x9214)},
95 {USB_DEVICE(0x05c6, 0x9215)},
96 {USB_DEVICE(0x05c6, 0x9264)},
97 {USB_DEVICE(0x05c6, 0x9265)},
98 {USB_DEVICE(0x05c6, 0x9234)},
99 {USB_DEVICE(0x05c6, 0x9235)},
100 {USB_DEVICE(0x05c6, 0x9274)},
101 {USB_DEVICE(0x05c6, 0x9275)},
102 {USB_DEVICE(0x1199, 0x9000)},
103 {USB_DEVICE(0x1199, 0x9001)},
104 {USB_DEVICE(0x1199, 0x9002)},
105 {USB_DEVICE(0x1199, 0x9003)},
106 {USB_DEVICE(0x1199, 0x9004)},
107 {USB_DEVICE(0x1199, 0x9005)},
108 {USB_DEVICE(0x1199, 0x9006)},
109 {USB_DEVICE(0x1199, 0x9007)},
110 {USB_DEVICE(0x1199, 0x9008)},
111 {USB_DEVICE(0x1199, 0x9009)},
112 {USB_DEVICE(0x1199, 0x900a)},
113 {USB_DEVICE(0x1199, 0x9011)},
114 {USB_DEVICE(0x16d8, 0x8001)},
115 {USB_DEVICE(0x16d8, 0x8002)},
116 {USB_DEVICE(0x05c6, 0x9204)},
117 {USB_DEVICE(0x05c6, 0x9205)},
118
119
120 {USB_DEVICE(0x03f0, 0x371d)},
121 {USB_DEVICE(0x05c6, 0x920c)},
122 {USB_DEVICE(0x05c6, 0x920d)},
123 {USB_DEVICE(0x1410, 0xa020)},
124 {USB_DEVICE(0x1410, 0xa021)},
125 {USB_DEVICE(0x413c, 0x8193)},
126 {USB_DEVICE(0x413c, 0x8194)},
127 {USB_DEVICE(0x1199, 0x68a4)},
128 {USB_DEVICE(0x1199, 0x68a5)},
129 {USB_DEVICE(0x1199, 0x68a8)},
130 {USB_DEVICE(0x1199, 0x68a9)},
131 {USB_DEVICE(0x1199, 0x9010)},
132 {USB_DEVICE(0x1199, 0x9012)},
133 {USB_DEVICE(0x1199, 0x9013)},
134 {USB_DEVICE(0x1199, 0x9014)},
135 {USB_DEVICE(0x1199, 0x9015)},
136 {USB_DEVICE(0x1199, 0x9018)},
137 {USB_DEVICE(0x1199, 0x9019)},
138 {USB_DEVICE(0x1199, 0x901b)},
139 {USB_DEVICE(0x12D1, 0x14F0)},
140 {USB_DEVICE(0x12D1, 0x14F1)},
141 {USB_DEVICE(0x0AF0, 0x8120)},
142
143
144 {DEVICE_SWI(0x03f0, 0x4e1d)},
145 {DEVICE_SWI(0x0f3d, 0x68a2)},
146 {DEVICE_SWI(0x114f, 0x68a2)},
147 {DEVICE_SWI(0x1199, 0x68a2)},
148 {DEVICE_SWI(0x1199, 0x68c0)},
149 {DEVICE_SWI(0x1199, 0x901c)},
150 {DEVICE_SWI(0x1199, 0x901f)},
151 {DEVICE_SWI(0x1199, 0x9040)},
152 {DEVICE_SWI(0x1199, 0x9041)},
153 {DEVICE_SWI(0x1199, 0x9051)},
154 {DEVICE_SWI(0x1199, 0x9053)},
155 {DEVICE_SWI(0x1199, 0x9054)},
156 {DEVICE_SWI(0x1199, 0x9055)},
157 {DEVICE_SWI(0x1199, 0x9056)},
158 {DEVICE_SWI(0x1199, 0x9060)},
159 {DEVICE_SWI(0x1199, 0x9061)},
160 {DEVICE_SWI(0x1199, 0x9070)},
161 {DEVICE_SWI(0x1199, 0x9071)},
162 {DEVICE_SWI(0x1199, 0x9078)},
163 {DEVICE_SWI(0x1199, 0x9079)},
164 {DEVICE_SWI(0x413c, 0x81a2)},
165 {DEVICE_SWI(0x413c, 0x81a3)},
166 {DEVICE_SWI(0x413c, 0x81a4)},
167 {DEVICE_SWI(0x413c, 0x81a8)},
168 {DEVICE_SWI(0x413c, 0x81a9)},
169 {DEVICE_SWI(0x413c, 0x81b1)},
170 {DEVICE_SWI(0x413c, 0x81b3)},
171
172
173 {DEVICE_HWI(0x03f0, 0x581d)},
174
175 { }
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
185
186
187
188
189
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
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
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
232
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;
245 else
246 altsetting = 1;
247 }
248 goto done;
249
250 }
251
252
253 altsetting = 0;
254
255
256
257
258
259
260 switch (id->driver_info) {
261 case QCSERIAL_G1K:
262
263
264
265
266
267
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
285 if (nintf == 5 && id->idProduct == QUECTEL_EC20_PID) {
286 altsetting = handle_quectel_ec20(dev, ifnum);
287 goto done;
288 }
289
290
291
292
293
294
295
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
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
317
318
319
320 dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
321 break;
322 }
323 break;
324 case QCSERIAL_SWI:
325
326
327
328
329
330
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
345 altsetting = -1;
346 break;
347 }
348 break;
349 case QCSERIAL_HWI:
350
351
352
353
354
355
356
357
358
359
360 switch (intf->desc.bInterfaceProtocol) {
361
362 case 0x07:
363 case 0x37:
364 case 0x67:
365
366 case 0x08:
367 case 0x38:
368 case 0x68:
369
370 case 0x09:
371 case 0x39:
372 case 0x69:
373
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");
471