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qcserial.c
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1 /*
2  * Qualcomm Serial USB driver
3  *
4  * Copyright (c) 2008 QUALCOMM Incorporated.
5  * Copyright (c) 2009 Greg Kroah-Hartman <[email protected]>
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 DEVICE_G1K(v, p) \
26  USB_DEVICE(v, p), .driver_info = 1
27 
28 static const struct usb_device_id id_table[] = {
29  /* Gobi 1000 devices */
30  {DEVICE_G1K(0x05c6, 0x9211)}, /* Acer Gobi QDL device */
31  {DEVICE_G1K(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */
32  {DEVICE_G1K(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */
33  {DEVICE_G1K(0x03f0, 0x201d)}, /* HP un2400 Gobi QDL Device */
34  {DEVICE_G1K(0x04da, 0x250d)}, /* Panasonic Gobi Modem device */
35  {DEVICE_G1K(0x04da, 0x250c)}, /* Panasonic Gobi QDL device */
36  {DEVICE_G1K(0x413c, 0x8172)}, /* Dell Gobi Modem device */
37  {DEVICE_G1K(0x413c, 0x8171)}, /* Dell Gobi QDL device */
38  {DEVICE_G1K(0x1410, 0xa001)}, /* Novatel Gobi Modem device */
39  {DEVICE_G1K(0x1410, 0xa008)}, /* Novatel Gobi QDL device */
40  {DEVICE_G1K(0x0b05, 0x1776)}, /* Asus Gobi Modem device */
41  {DEVICE_G1K(0x0b05, 0x1774)}, /* Asus Gobi QDL device */
42  {DEVICE_G1K(0x19d2, 0xfff3)}, /* ONDA Gobi Modem device */
43  {DEVICE_G1K(0x19d2, 0xfff2)}, /* ONDA Gobi QDL device */
44  {DEVICE_G1K(0x1557, 0x0a80)}, /* OQO Gobi QDL device */
45  {DEVICE_G1K(0x05c6, 0x9001)}, /* Generic Gobi Modem device */
46  {DEVICE_G1K(0x05c6, 0x9002)}, /* Generic Gobi Modem device */
47  {DEVICE_G1K(0x05c6, 0x9202)}, /* Generic Gobi Modem device */
48  {DEVICE_G1K(0x05c6, 0x9203)}, /* Generic Gobi Modem device */
49  {DEVICE_G1K(0x05c6, 0x9222)}, /* Generic Gobi Modem device */
50  {DEVICE_G1K(0x05c6, 0x9008)}, /* Generic Gobi QDL device */
51  {DEVICE_G1K(0x05c6, 0x9009)}, /* Generic Gobi Modem device */
52  {DEVICE_G1K(0x05c6, 0x9201)}, /* Generic Gobi QDL device */
53  {DEVICE_G1K(0x05c6, 0x9221)}, /* Generic Gobi QDL device */
54  {DEVICE_G1K(0x05c6, 0x9231)}, /* Generic Gobi QDL device */
55  {DEVICE_G1K(0x1f45, 0x0001)}, /* Unknown Gobi QDL device */
56 
57  /* Gobi 2000 devices */
58  {USB_DEVICE(0x1410, 0xa010)}, /* Novatel Gobi 2000 QDL device */
59  {USB_DEVICE(0x1410, 0xa011)}, /* Novatel Gobi 2000 QDL device */
60  {USB_DEVICE(0x1410, 0xa012)}, /* Novatel Gobi 2000 QDL device */
61  {USB_DEVICE(0x1410, 0xa013)}, /* Novatel Gobi 2000 QDL device */
62  {USB_DEVICE(0x1410, 0xa014)}, /* Novatel Gobi 2000 QDL device */
63  {USB_DEVICE(0x413c, 0x8185)}, /* Dell Gobi 2000 QDL device (N0218, VU936) */
64  {USB_DEVICE(0x413c, 0x8186)}, /* Dell Gobi 2000 Modem device (N0218, VU936) */
65  {USB_DEVICE(0x05c6, 0x9208)}, /* Generic Gobi 2000 QDL device */
66  {USB_DEVICE(0x05c6, 0x920b)}, /* Generic Gobi 2000 Modem device */
67  {USB_DEVICE(0x05c6, 0x9224)}, /* Sony Gobi 2000 QDL device (N0279, VU730) */
68  {USB_DEVICE(0x05c6, 0x9225)}, /* Sony Gobi 2000 Modem device (N0279, VU730) */
69  {USB_DEVICE(0x05c6, 0x9244)}, /* Samsung Gobi 2000 QDL device (VL176) */
70  {USB_DEVICE(0x05c6, 0x9245)}, /* Samsung Gobi 2000 Modem device (VL176) */
71  {USB_DEVICE(0x03f0, 0x241d)}, /* HP Gobi 2000 QDL device (VP412) */
72  {USB_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */
73  {USB_DEVICE(0x05c6, 0x9214)}, /* Acer Gobi 2000 QDL device (VP413) */
74  {USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
75  {USB_DEVICE(0x05c6, 0x9264)}, /* Asus Gobi 2000 QDL device (VR305) */
76  {USB_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */
77  {USB_DEVICE(0x05c6, 0x9234)}, /* Top Global Gobi 2000 QDL device (VR306) */
78  {USB_DEVICE(0x05c6, 0x9235)}, /* Top Global Gobi 2000 Modem device (VR306) */
79  {USB_DEVICE(0x05c6, 0x9274)}, /* iRex Technologies Gobi 2000 QDL device (VR307) */
80  {USB_DEVICE(0x05c6, 0x9275)}, /* iRex Technologies Gobi 2000 Modem device (VR307) */
81  {USB_DEVICE(0x1199, 0x9000)}, /* Sierra Wireless Gobi 2000 QDL device (VT773) */
82  {USB_DEVICE(0x1199, 0x9001)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
83  {USB_DEVICE(0x1199, 0x9002)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
84  {USB_DEVICE(0x1199, 0x9003)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
85  {USB_DEVICE(0x1199, 0x9004)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
86  {USB_DEVICE(0x1199, 0x9005)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
87  {USB_DEVICE(0x1199, 0x9006)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
88  {USB_DEVICE(0x1199, 0x9007)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
89  {USB_DEVICE(0x1199, 0x9008)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
90  {USB_DEVICE(0x1199, 0x9009)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
91  {USB_DEVICE(0x1199, 0x900a)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
92  {USB_DEVICE(0x1199, 0x9011)}, /* Sierra Wireless Gobi 2000 Modem device (MC8305) */
93  {USB_DEVICE(0x16d8, 0x8001)}, /* CMDTech Gobi 2000 QDL device (VU922) */
94  {USB_DEVICE(0x16d8, 0x8002)}, /* CMDTech Gobi 2000 Modem device (VU922) */
95  {USB_DEVICE(0x05c6, 0x9204)}, /* Gobi 2000 QDL device */
96  {USB_DEVICE(0x05c6, 0x9205)}, /* Gobi 2000 Modem device */
97 
98  /* Gobi 3000 devices */
99  {USB_DEVICE(0x03f0, 0x371d)}, /* HP un2430 Gobi 3000 QDL */
100  {USB_DEVICE(0x05c6, 0x920c)}, /* Gobi 3000 QDL */
101  {USB_DEVICE(0x05c6, 0x920d)}, /* Gobi 3000 Composite */
102  {USB_DEVICE(0x1410, 0xa020)}, /* Novatel Gobi 3000 QDL */
103  {USB_DEVICE(0x1410, 0xa021)}, /* Novatel Gobi 3000 Composite */
104  {USB_DEVICE(0x413c, 0x8193)}, /* Dell Gobi 3000 QDL */
105  {USB_DEVICE(0x413c, 0x8194)}, /* Dell Gobi 3000 Composite */
106  {USB_DEVICE(0x1199, 0x68a4)}, /* Sierra Wireless QDL */
107  {USB_DEVICE(0x1199, 0x68a5)}, /* Sierra Wireless Modem */
108  {USB_DEVICE(0x1199, 0x68a8)}, /* Sierra Wireless QDL */
109  {USB_DEVICE(0x1199, 0x68a9)}, /* Sierra Wireless Modem */
110  {USB_DEVICE(0x1199, 0x9010)}, /* Sierra Wireless Gobi 3000 QDL */
111  {USB_DEVICE(0x1199, 0x9012)}, /* Sierra Wireless Gobi 3000 QDL */
112  {USB_DEVICE(0x1199, 0x9013)}, /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
113  {USB_DEVICE(0x1199, 0x9014)}, /* Sierra Wireless Gobi 3000 QDL */
114  {USB_DEVICE(0x1199, 0x9015)}, /* Sierra Wireless Gobi 3000 Modem device */
115  {USB_DEVICE(0x1199, 0x9018)}, /* Sierra Wireless Gobi 3000 QDL */
116  {USB_DEVICE(0x1199, 0x9019)}, /* Sierra Wireless Gobi 3000 Modem device */
117  {USB_DEVICE(0x1199, 0x901b)}, /* Sierra Wireless MC7770 */
118  {USB_DEVICE(0x12D1, 0x14F0)}, /* Sony Gobi 3000 QDL */
119  {USB_DEVICE(0x12D1, 0x14F1)}, /* Sony Gobi 3000 Composite */
120 
121  /* non Gobi Qualcomm serial devices */
122  {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 0)}, /* Sierra Wireless MC7700 Device Management */
123  {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 2)}, /* Sierra Wireless MC7700 NMEA */
124  {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 3)}, /* Sierra Wireless MC7700 Modem */
125  {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 0)}, /* Sierra Wireless MC7750 Device Management */
126  {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 2)}, /* Sierra Wireless MC7750 NMEA */
127  {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 3)}, /* Sierra Wireless MC7750 Modem */
128  {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 0)}, /* Sierra Wireless MC7710 Device Management */
129  {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 2)}, /* Sierra Wireless MC7710 NMEA */
130  {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 3)}, /* Sierra Wireless MC7710 Modem */
131  {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 0)}, /* Sierra Wireless EM7700 Device Management */
132  {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 2)}, /* Sierra Wireless EM7700 NMEA */
133  {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 3)}, /* Sierra Wireless EM7700 Modem */
134 
135  { } /* Terminating entry */
136 };
137 MODULE_DEVICE_TABLE(usb, id_table);
138 
139 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
140 {
141  struct usb_host_interface *intf = serial->interface->cur_altsetting;
142  struct device *dev = &serial->dev->dev;
143  int retval = -ENODEV;
144  __u8 nintf;
145  __u8 ifnum;
146  bool is_gobi1k = id->driver_info ? true : false;
147  int altsetting = -1;
148 
149  dev_dbg(dev, "Is Gobi 1000 = %d\n", is_gobi1k);
150 
151  nintf = serial->dev->actconfig->desc.bNumInterfaces;
152  dev_dbg(dev, "Num Interfaces = %d\n", nintf);
153  ifnum = intf->desc.bInterfaceNumber;
154  dev_dbg(dev, "This Interface = %d\n", ifnum);
155 
156  if (nintf == 1) {
157  /* QDL mode */
158  /* Gobi 2000 has a single altsetting, older ones have two */
159  if (serial->interface->num_altsetting == 2)
160  intf = &serial->interface->altsetting[1];
161  else if (serial->interface->num_altsetting > 2)
162  goto done;
163 
164  if (intf->desc.bNumEndpoints == 2 &&
165  usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
166  usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
167  dev_dbg(dev, "QDL port found\n");
168 
169  if (serial->interface->num_altsetting == 1)
170  retval = 0; /* Success */
171  else
172  altsetting = 1;
173  }
174  goto done;
175 
176  }
177 
178  /* allow any number of interfaces when doing direct interface match */
179  if (id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER) {
180  dev_dbg(dev, "Generic Qualcomm serial interface found\n");
181  altsetting = 0;
182  goto done;
183  }
184 
185  if (nintf < 3 || nintf > 4) {
186  dev_err(dev, "unknown number of interfaces: %d\n", nintf);
187  goto done;
188  }
189 
190  /* default to enabling interface */
191  altsetting = 0;
192 
193  /* Composite mode; don't bind to the QMI/net interface as that
194  * gets handled by other drivers.
195  */
196 
197  if (is_gobi1k) {
198  /* Gobi 1K USB layout:
199  * 0: serial port (doesn't respond)
200  * 1: serial port (doesn't respond)
201  * 2: AT-capable modem port
202  * 3: QMI/net
203  */
204  if (ifnum == 2)
205  dev_dbg(dev, "Modem port found\n");
206  else
207  altsetting = -1;
208  } else {
209  /* Gobi 2K+ USB layout:
210  * 0: QMI/net
211  * 1: DM/DIAG (use libqcdm from ModemManager for communication)
212  * 2: AT-capable modem port
213  * 3: NMEA
214  */
215  switch (ifnum) {
216  case 0:
217  /* Don't claim the QMI/net interface */
218  altsetting = -1;
219  break;
220  case 1:
221  dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n");
222  break;
223  case 2:
224  dev_dbg(dev, "Modem port found\n");
225  break;
226  case 3:
227  /*
228  * NMEA (serial line 9600 8N1)
229  * # echo "\$GPS_START" > /dev/ttyUSBx
230  * # echo "\$GPS_STOP" > /dev/ttyUSBx
231  */
232  dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
233  break;
234  }
235  }
236 
237 done:
238  if (altsetting >= 0) {
239  retval = usb_set_interface(serial->dev, ifnum, altsetting);
240  if (retval < 0) {
241  dev_err(dev,
242  "Could not set interface, error %d\n",
243  retval);
244  retval = -ENODEV;
245  }
246  }
247 
248  return retval;
249 }
250 
251 static int qc_attach(struct usb_serial *serial)
252 {
253  struct usb_wwan_intf_private *data;
254 
255  data = kzalloc(sizeof(*data), GFP_KERNEL);
256  if (!data)
257  return -ENOMEM;
258 
259  spin_lock_init(&data->susp_lock);
260 
261  usb_set_serial_data(serial, data);
262 
263  return 0;
264 }
265 
266 static void qc_release(struct usb_serial *serial)
267 {
268  struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
269 
270  usb_set_serial_data(serial, NULL);
271  kfree(priv);
272 }
273 
274 static struct usb_serial_driver qcdevice = {
275  .driver = {
276  .owner = THIS_MODULE,
277  .name = "qcserial",
278  },
279  .description = "Qualcomm USB modem",
280  .id_table = id_table,
281  .num_ports = 1,
282  .probe = qcprobe,
283  .open = usb_wwan_open,
284  .close = usb_wwan_close,
285  .write = usb_wwan_write,
286  .write_room = usb_wwan_write_room,
287  .chars_in_buffer = usb_wwan_chars_in_buffer,
288  .attach = qc_attach,
289  .release = qc_release,
290  .port_probe = usb_wwan_port_probe,
291  .port_remove = usb_wwan_port_remove,
292 #ifdef CONFIG_PM
293  .suspend = usb_wwan_suspend,
294  .resume = usb_wwan_resume,
295 #endif
296 };
297 
298 static struct usb_serial_driver * const serial_drivers[] = {
299  &qcdevice, NULL
300 };
301 
302 module_usb_serial_driver(serial_drivers, id_table);
303 
304 MODULE_AUTHOR(DRIVER_AUTHOR);
305 MODULE_DESCRIPTION(DRIVER_DESC);
306 MODULE_LICENSE("GPL v2");
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