blob: 6c6add50feaa6005e4b22dcceb7ddbd1fc156009 [file] [log] [blame]
Greg Kroah-Hartmana78b4282009-02-17 22:39:56 -08001/*
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
19#define DRIVER_AUTHOR "Qualcomm Inc"
20#define DRIVER_DESC "Qualcomm USB Serial driver"
21
22static int debug;
23
24static struct usb_device_id id_table[] = {
25 {USB_DEVICE(0x05c6, 0x9211)}, /* Acer Gobi QDL device */
26 {USB_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */
27 { } /* Terminating entry */
28};
29MODULE_DEVICE_TABLE(usb, id_table);
30
31static struct usb_driver qcdriver = {
32 .name = "qcserial",
33 .probe = usb_serial_probe,
34 .disconnect = usb_serial_disconnect,
35 .id_table = id_table,
36 .suspend = usb_serial_suspend,
37 .resume = usb_serial_resume,
38 .supports_autosuspend = true,
39};
40
41static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
42{
43 int retval = -ENODEV;
44 __u8 nintf;
45 __u8 ifnum;
46
47 dbg("%s", __func__);
48
49 nintf = serial->dev->actconfig->desc.bNumInterfaces;
50 dbg("Num Interfaces = %d", nintf);
51 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
52 dbg("This Interface = %d", ifnum);
53
54 switch (nintf) {
55 case 1:
56 /* QDL mode */
57 if (serial->interface->num_altsetting == 2) {
58 struct usb_host_interface *intf;
59
60 intf = &serial->interface->altsetting[1];
61 if (intf->desc.bNumEndpoints == 2) {
62 if (usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
63 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
64 dbg("QDL port found");
65 retval = usb_set_interface(serial->dev, ifnum, 1);
66 if (retval < 0) {
67 dev_err(&serial->dev->dev,
68 "Could not set interface, error %d\n",
69 retval);
70 retval = -ENODEV;
71 }
72 return retval;
73 }
74 }
75 }
76 break;
77
78 case 4:
79 /* Composite mode */
80 if (ifnum == 2) {
81 dbg("Modem port found");
82 retval = usb_set_interface(serial->dev, ifnum, 0);
83 if (retval < 0) {
84 dev_err(&serial->dev->dev,
85 "Could not set interface, error %d\n",
86 retval);
87 retval = -ENODEV;
88 }
89 return retval;
90 }
91 break;
92
93 default:
94 dev_err(&serial->dev->dev,
95 "unknown number of interfaces: %d\n", nintf);
96 return -ENODEV;
97 }
98
99 return retval;
100}
101
102static struct usb_serial_driver qcdevice = {
103 .driver = {
104 .owner = THIS_MODULE,
105 .name = "qcserial",
106 },
107 .description = "Qualcomm USB modem",
108 .id_table = id_table,
109 .usb_driver = &qcdriver,
110 .num_ports = 1,
111 .probe = qcprobe,
112};
113
114static int __init qcinit(void)
115{
116 int retval;
117
118 retval = usb_serial_register(&qcdevice);
119 if (retval)
120 return retval;
121
122 retval = usb_register(&qcdriver);
123 if (retval) {
124 usb_serial_deregister(&qcdevice);
125 return retval;
126 }
127
128 return 0;
129}
130
131static void __exit qcexit(void)
132{
133 usb_deregister(&qcdriver);
134 usb_serial_deregister(&qcdevice);
135}
136
137module_init(qcinit);
138module_exit(qcexit);
139
140MODULE_AUTHOR(DRIVER_AUTHOR);
141MODULE_DESCRIPTION(DRIVER_DESC);
142MODULE_LICENSE("GPL v2");
143
144module_param(debug, bool, S_IRUGO | S_IWUSR);
145MODULE_PARM_DESC(debug, "Debug enabled or not");