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/usb.h>
17 #include <linux/usb/serial.h>
18 #include <linux/slab.h>
19 #include "usb-wwan.h"
20
21 #define DRIVER_AUTHOR "Qualcomm Inc"
22 #define DRIVER_DESC "Qualcomm USB Serial driver"
23
24 static int debug;
25
26 static const struct usb_device_id id_table[] = {
27 {USB_DEVICE(0x05c6, 0x9211)}, /* Acer Gobi QDL device */
28 {USB_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */
29 {USB_DEVICE(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */
30 {USB_DEVICE(0x03f0, 0x201d)}, /* HP un2400 Gobi QDL Device */
31 {USB_DEVICE(0x04da, 0x250d)}, /* Panasonic Gobi Modem device */
32 {USB_DEVICE(0x04da, 0x250c)}, /* Panasonic Gobi QDL device */
33 {USB_DEVICE(0x413c, 0x8172)}, /* Dell Gobi Modem device */
34 {USB_DEVICE(0x413c, 0x8171)}, /* Dell Gobi QDL device */
35 {USB_DEVICE(0x1410, 0xa001)}, /* Novatel Gobi Modem device */
36 {USB_DEVICE(0x1410, 0xa008)}, /* Novatel Gobi QDL device */
37 {USB_DEVICE(0x0b05, 0x1776)}, /* Asus Gobi Modem device */
38 {USB_DEVICE(0x0b05, 0x1774)}, /* Asus Gobi QDL device */
39 {USB_DEVICE(0x19d2, 0xfff3)}, /* ONDA Gobi Modem device */
40 {USB_DEVICE(0x19d2, 0xfff2)}, /* ONDA Gobi QDL device */
41 {USB_DEVICE(0x1557, 0x0a80)}, /* OQO Gobi QDL device */
42 {USB_DEVICE(0x05c6, 0x9001)}, /* Generic Gobi Modem device */
43 {USB_DEVICE(0x05c6, 0x9002)}, /* Generic Gobi Modem device */
44 {USB_DEVICE(0x05c6, 0x9202)}, /* Generic Gobi Modem device */
45 {USB_DEVICE(0x05c6, 0x9203)}, /* Generic Gobi Modem device */
46 {USB_DEVICE(0x05c6, 0x9222)}, /* Generic Gobi Modem device */
47 {USB_DEVICE(0x05c6, 0x9008)}, /* Generic Gobi QDL device */
48 {USB_DEVICE(0x05c6, 0x9201)}, /* Generic Gobi QDL device */
49 {USB_DEVICE(0x05c6, 0x9221)}, /* Generic Gobi QDL device */
50 {USB_DEVICE(0x05c6, 0x9231)}, /* Generic Gobi QDL device */
51 {USB_DEVICE(0x1f45, 0x0001)}, /* Unknown Gobi QDL device */
52 {USB_DEVICE(0x413c, 0x8185)}, /* Dell Gobi 2000 QDL device (N0218, VU936) */
53 {USB_DEVICE(0x413c, 0x8186)}, /* Dell Gobi 2000 Modem device (N0218, VU936) */
54 {USB_DEVICE(0x05c6, 0x9208)}, /* Generic Gobi 2000 QDL device */
55 {USB_DEVICE(0x05c6, 0x920b)}, /* Generic Gobi 2000 Modem device */
56 {USB_DEVICE(0x05c6, 0x9224)}, /* Sony Gobi 2000 QDL device (N0279, VU730) */
57 {USB_DEVICE(0x05c6, 0x9225)}, /* Sony Gobi 2000 Modem device (N0279, VU730) */
58 {USB_DEVICE(0x05c6, 0x9244)}, /* Samsung Gobi 2000 QDL device (VL176) */
59 {USB_DEVICE(0x05c6, 0x9245)}, /* Samsung Gobi 2000 Modem device (VL176) */
60 {USB_DEVICE(0x03f0, 0x241d)}, /* HP Gobi 2000 QDL device (VP412) */
61 {USB_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */
62 {USB_DEVICE(0x05c6, 0x9214)}, /* Acer Gobi 2000 QDL device (VP413) */
63 {USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
64 {USB_DEVICE(0x05c6, 0x9264)}, /* Asus Gobi 2000 QDL device (VR305) */
65 {USB_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */
66 {USB_DEVICE(0x05c6, 0x9234)}, /* Top Global Gobi 2000 QDL device (VR306) */
67 {USB_DEVICE(0x05c6, 0x9235)}, /* Top Global Gobi 2000 Modem device (VR306) */
68 {USB_DEVICE(0x05c6, 0x9274)}, /* iRex Technologies Gobi 2000 QDL device (VR307) */
69 {USB_DEVICE(0x05c6, 0x9275)}, /* iRex Technologies Gobi 2000 Modem device (VR307) */
70 {USB_DEVICE(0x1199, 0x9000)}, /* Sierra Wireless Gobi 2000 QDL device (VT773) */
71 {USB_DEVICE(0x1199, 0x9001)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
72 {USB_DEVICE(0x1199, 0x9002)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
73 {USB_DEVICE(0x1199, 0x9003)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
74 {USB_DEVICE(0x1199, 0x9004)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
75 {USB_DEVICE(0x1199, 0x9005)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
76 {USB_DEVICE(0x1199, 0x9006)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
77 {USB_DEVICE(0x1199, 0x9007)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
78 {USB_DEVICE(0x1199, 0x9008)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
79 {USB_DEVICE(0x1199, 0x9009)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
80 {USB_DEVICE(0x1199, 0x900a)}, /* Sierra Wireless Gobi 2000 Modem device (VT773) */
81 {USB_DEVICE(0x16d8, 0x8001)}, /* CMDTech Gobi 2000 QDL device (VU922) */
82 {USB_DEVICE(0x16d8, 0x8002)}, /* CMDTech Gobi 2000 Modem device (VU922) */
83 {USB_DEVICE(0x05c6, 0x9204)}, /* Gobi 2000 QDL device */
84 {USB_DEVICE(0x05c6, 0x9205)}, /* Gobi 2000 Modem device */
85 { } /* Terminating entry */
86 };
87 MODULE_DEVICE_TABLE(usb, id_table);
88
89 static struct usb_driver qcdriver = {
90 .name = "qcserial",
91 .probe = usb_serial_probe,
92 .disconnect = usb_serial_disconnect,
93 .id_table = id_table,
94 .suspend = usb_serial_suspend,
95 .resume = usb_serial_resume,
96 .supports_autosuspend = true,
97 };
98
qcprobe(struct usb_serial * serial,const struct usb_device_id * id)99 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
100 {
101 struct usb_wwan_intf_private *data;
102 struct usb_host_interface *intf = serial->interface->cur_altsetting;
103 int retval = -ENODEV;
104 __u8 nintf;
105 __u8 ifnum;
106
107 dbg("%s", __func__);
108
109 nintf = serial->dev->actconfig->desc.bNumInterfaces;
110 dbg("Num Interfaces = %d", nintf);
111 ifnum = intf->desc.bInterfaceNumber;
112 dbg("This Interface = %d", ifnum);
113
114 data = kzalloc(sizeof(struct usb_wwan_intf_private),
115 GFP_KERNEL);
116 if (!data)
117 return -ENOMEM;
118
119 spin_lock_init(&data->susp_lock);
120
121 usb_enable_autosuspend(serial->dev);
122
123 switch (nintf) {
124 case 1:
125 /* QDL mode */
126 /* Gobi 2000 has a single altsetting, older ones have two */
127 if (serial->interface->num_altsetting == 2)
128 intf = &serial->interface->altsetting[1];
129 else if (serial->interface->num_altsetting > 2)
130 break;
131
132 if (intf->desc.bNumEndpoints == 2 &&
133 usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
134 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
135 dbg("QDL port found");
136
137 if (serial->interface->num_altsetting == 1) {
138 retval = 0; /* Success */
139 break;
140 }
141
142 retval = usb_set_interface(serial->dev, ifnum, 1);
143 if (retval < 0) {
144 dev_err(&serial->dev->dev,
145 "Could not set interface, error %d\n",
146 retval);
147 retval = -ENODEV;
148 kfree(data);
149 }
150 }
151 break;
152
153 case 3:
154 case 4:
155 /* Composite mode */
156 /* ifnum == 0 is a broadband network adapter */
157 if (ifnum == 1) {
158 /*
159 * Diagnostics Monitor (serial line 9600 8N1)
160 * Qualcomm DM protocol
161 * use "libqcdm" (ModemManager) for communication
162 */
163 dbg("Diagnostics Monitor found");
164 retval = usb_set_interface(serial->dev, ifnum, 0);
165 if (retval < 0) {
166 dev_err(&serial->dev->dev,
167 "Could not set interface, error %d\n",
168 retval);
169 retval = -ENODEV;
170 kfree(data);
171 }
172 } else if (ifnum == 2) {
173 dbg("Modem port found");
174 retval = usb_set_interface(serial->dev, ifnum, 0);
175 if (retval < 0) {
176 dev_err(&serial->dev->dev,
177 "Could not set interface, error %d\n",
178 retval);
179 retval = -ENODEV;
180 kfree(data);
181 }
182 } else if (ifnum==3) {
183 /*
184 * NMEA (serial line 9600 8N1)
185 * # echo "\$GPS_START" > /dev/ttyUSBx
186 * # echo "\$GPS_STOP" > /dev/ttyUSBx
187 */
188 dbg("NMEA GPS interface found");
189 retval = usb_set_interface(serial->dev, ifnum, 0);
190 if (retval < 0) {
191 dev_err(&serial->dev->dev,
192 "Could not set interface, error %d\n",
193 retval);
194 retval = -ENODEV;
195 kfree(data);
196 }
197 }
198 break;
199
200 default:
201 dev_err(&serial->dev->dev,
202 "unknown number of interfaces: %d\n", nintf);
203 kfree(data);
204 retval = -ENODEV;
205 }
206
207 /* Set serial->private if not returning -ENODEV */
208 if (retval != -ENODEV)
209 usb_set_serial_data(serial, data);
210 return retval;
211 }
212
qc_release(struct usb_serial * serial)213 static void qc_release(struct usb_serial *serial)
214 {
215 struct usb_wwan_intf_private *priv = usb_get_serial_data(serial);
216
217 dbg("%s", __func__);
218
219 /* Call usb_wwan release & free the private data allocated in qcprobe */
220 usb_wwan_release(serial);
221 usb_set_serial_data(serial, NULL);
222 kfree(priv);
223 }
224
225 static struct usb_serial_driver qcdevice = {
226 .driver = {
227 .owner = THIS_MODULE,
228 .name = "qcserial",
229 },
230 .description = "Qualcomm USB modem",
231 .id_table = id_table,
232 .usb_driver = &qcdriver,
233 .num_ports = 1,
234 .probe = qcprobe,
235 .open = usb_wwan_open,
236 .close = usb_wwan_close,
237 .write = usb_wwan_write,
238 .write_room = usb_wwan_write_room,
239 .chars_in_buffer = usb_wwan_chars_in_buffer,
240 .attach = usb_wwan_startup,
241 .disconnect = usb_wwan_disconnect,
242 .release = qc_release,
243 #ifdef CONFIG_PM
244 .suspend = usb_wwan_suspend,
245 .resume = usb_wwan_resume,
246 #endif
247 };
248
qcinit(void)249 static int __init qcinit(void)
250 {
251 int retval;
252
253 retval = usb_serial_register(&qcdevice);
254 if (retval)
255 return retval;
256
257 retval = usb_register(&qcdriver);
258 if (retval) {
259 usb_serial_deregister(&qcdevice);
260 return retval;
261 }
262
263 return 0;
264 }
265
qcexit(void)266 static void __exit qcexit(void)
267 {
268 usb_deregister(&qcdriver);
269 usb_serial_deregister(&qcdevice);
270 }
271
272 module_init(qcinit);
273 module_exit(qcexit);
274
275 MODULE_AUTHOR(DRIVER_AUTHOR);
276 MODULE_DESCRIPTION(DRIVER_DESC);
277 MODULE_LICENSE("GPL v2");
278
279 module_param(debug, bool, S_IRUGO | S_IWUSR);
280 MODULE_PARM_DESC(debug, "Debug enabled or not");
281