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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, 0x9224)},   /* Sony Gobi 2000 QDL device (N0279, VU730) */
55         {USB_DEVICE(0x05c6, 0x9225)},   /* Sony Gobi 2000 Modem device (N0279, VU730) */
56         {USB_DEVICE(0x05c6, 0x9244)},   /* Samsung Gobi 2000 QDL device (VL176) */
57         {USB_DEVICE(0x05c6, 0x9245)},   /* Samsung Gobi 2000 Modem device (VL176) */
58         {USB_DEVICE(0x03f0, 0x241d)},   /* HP Gobi 2000 QDL device (VP412) */
59         {USB_DEVICE(0x03f0, 0x251d)},   /* HP Gobi 2000 Modem device (VP412) */
60         {USB_DEVICE(0x05c6, 0x9214)},   /* Acer Gobi 2000 QDL device (VP413) */
61         {USB_DEVICE(0x05c6, 0x9215)},   /* Acer Gobi 2000 Modem device (VP413) */
62         {USB_DEVICE(0x05c6, 0x9264)},   /* Asus Gobi 2000 QDL device (VR305) */
63         {USB_DEVICE(0x05c6, 0x9265)},   /* Asus Gobi 2000 Modem device (VR305) */
64         {USB_DEVICE(0x05c6, 0x9234)},   /* Top Global Gobi 2000 QDL device (VR306) */
65         {USB_DEVICE(0x05c6, 0x9235)},   /* Top Global Gobi 2000 Modem device (VR306) */
66         {USB_DEVICE(0x05c6, 0x9274)},   /* iRex Technologies Gobi 2000 QDL device (VR307) */
67         {USB_DEVICE(0x05c6, 0x9275)},   /* iRex Technologies Gobi 2000 Modem device (VR307) */
68         {USB_DEVICE(0x1199, 0x9000)},   /* Sierra Wireless Gobi 2000 QDL device (VT773) */
69         {USB_DEVICE(0x1199, 0x9001)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
70         {USB_DEVICE(0x1199, 0x9002)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
71         {USB_DEVICE(0x1199, 0x9003)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
72         {USB_DEVICE(0x1199, 0x9004)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
73         {USB_DEVICE(0x1199, 0x9005)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
74         {USB_DEVICE(0x1199, 0x9006)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
75         {USB_DEVICE(0x1199, 0x9007)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
76         {USB_DEVICE(0x1199, 0x9008)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
77         {USB_DEVICE(0x1199, 0x9009)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
78         {USB_DEVICE(0x1199, 0x900a)},   /* Sierra Wireless Gobi 2000 Modem device (VT773) */
79         {USB_DEVICE(0x16d8, 0x8001)},   /* CMDTech Gobi 2000 QDL device (VU922) */
80         {USB_DEVICE(0x16d8, 0x8002)},   /* CMDTech Gobi 2000 Modem device (VU922) */
81         {USB_DEVICE(0x05c6, 0x9204)},   /* Gobi 2000 QDL device */
82         {USB_DEVICE(0x05c6, 0x9205)},   /* Gobi 2000 Modem device */
83         { }                             /* Terminating entry */
84 };
85 MODULE_DEVICE_TABLE(usb, id_table);
86
87 static struct usb_driver qcdriver = {
88         .name                   = "qcserial",
89         .probe                  = usb_serial_probe,
90         .disconnect             = usb_serial_disconnect,
91         .id_table               = id_table,
92         .suspend                = usb_serial_suspend,
93         .resume                 = usb_serial_resume,
94         .supports_autosuspend   = true,
95 };
96
97 static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
98 {
99         struct usb_wwan_intf_private *data;
100         struct usb_host_interface *intf = serial->interface->cur_altsetting;
101         int retval = -ENODEV;
102         __u8 nintf;
103         __u8 ifnum;
104
105         dbg("%s", __func__);
106
107         nintf = serial->dev->actconfig->desc.bNumInterfaces;
108         dbg("Num Interfaces = %d", nintf);
109         ifnum = intf->desc.bInterfaceNumber;
110         dbg("This Interface = %d", ifnum);
111
112         data = serial->private = kzalloc(sizeof(struct usb_wwan_intf_private),
113                                          GFP_KERNEL);
114         if (!data)
115                 return -ENOMEM;
116
117         spin_lock_init(&data->susp_lock);
118
119         switch (nintf) {
120         case 1:
121                 /* QDL mode */
122                 /* Gobi 2000 has a single altsetting, older ones have two */
123                 if (serial->interface->num_altsetting == 2)
124                         intf = &serial->interface->altsetting[1];
125                 else if (serial->interface->num_altsetting > 2)
126                         break;
127
128                 if (intf->desc.bNumEndpoints == 2 &&
129                     usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
130                     usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
131                         dbg("QDL port found");
132
133                         if (serial->interface->num_altsetting == 1)
134                                 return 0;
135
136                         retval = usb_set_interface(serial->dev, ifnum, 1);
137                         if (retval < 0) {
138                                 dev_err(&serial->dev->dev,
139                                         "Could not set interface, error %d\n",
140                                         retval);
141                                 retval = -ENODEV;
142                         }
143                         return retval;
144                 }
145                 break;
146
147         case 3:
148         case 4:
149                 /* Composite mode */
150                 if (ifnum == 2) {
151                         dbg("Modem port found");
152                         retval = usb_set_interface(serial->dev, ifnum, 0);
153                         if (retval < 0) {
154                                 dev_err(&serial->dev->dev,
155                                         "Could not set interface, error %d\n",
156                                         retval);
157                                 retval = -ENODEV;
158                         }
159                         return retval;
160                 }
161                 break;
162
163         default:
164                 dev_err(&serial->dev->dev,
165                         "unknown number of interfaces: %d\n", nintf);
166                 return -ENODEV;
167         }
168
169         return retval;
170 }
171
172 static struct usb_serial_driver qcdevice = {
173         .driver = {
174                 .owner     = THIS_MODULE,
175                 .name      = "qcserial",
176         },
177         .description         = "Qualcomm USB modem",
178         .id_table            = id_table,
179         .usb_driver          = &qcdriver,
180         .num_ports           = 1,
181         .probe               = qcprobe,
182         .open                = usb_wwan_open,
183         .close               = usb_wwan_close,
184         .write               = usb_wwan_write,
185         .write_room          = usb_wwan_write_room,
186         .chars_in_buffer     = usb_wwan_chars_in_buffer,
187         .attach              = usb_wwan_startup,
188         .disconnect          = usb_wwan_disconnect,
189         .release             = usb_wwan_release,
190 #ifdef CONFIG_PM
191         .suspend             = usb_wwan_suspend,
192         .resume              = usb_wwan_resume,
193 #endif
194 };
195
196 static int __init qcinit(void)
197 {
198         int retval;
199
200         retval = usb_serial_register(&qcdevice);
201         if (retval)
202                 return retval;
203
204         retval = usb_register(&qcdriver);
205         if (retval) {
206                 usb_serial_deregister(&qcdevice);
207                 return retval;
208         }
209
210         return 0;
211 }
212
213 static void __exit qcexit(void)
214 {
215         usb_deregister(&qcdriver);
216         usb_serial_deregister(&qcdevice);
217 }
218
219 module_init(qcinit);
220 module_exit(qcexit);
221
222 MODULE_AUTHOR(DRIVER_AUTHOR);
223 MODULE_DESCRIPTION(DRIVER_DESC);
224 MODULE_LICENSE("GPL v2");
225
226 module_param(debug, bool, S_IRUGO | S_IWUSR);
227 MODULE_PARM_DESC(debug, "Debug enabled or not");