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path: root/drivers/usb/serial/qcserial.c
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Diffstat (limited to 'drivers/usb/serial/qcserial.c')
-rw-r--r--drivers/usb/serial/qcserial.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
new file mode 100644
index 000000000000..e6d6b0c17fd9
--- /dev/null
+++ b/drivers/usb/serial/qcserial.c
@@ -0,0 +1,147 @@
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
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 {USB_DEVICE(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */
28 {USB_DEVICE(0x03f0, 0x201d)}, /* HP un2400 Gobi QDL Device */
29 { } /* Terminating entry */
30};
31MODULE_DEVICE_TABLE(usb, id_table);
32
33static struct usb_driver qcdriver = {
34 .name = "qcserial",
35 .probe = usb_serial_probe,
36 .disconnect = usb_serial_disconnect,
37 .id_table = id_table,
38 .suspend = usb_serial_suspend,
39 .resume = usb_serial_resume,
40 .supports_autosuspend = true,
41};
42
43static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
44{
45 int retval = -ENODEV;
46 __u8 nintf;
47 __u8 ifnum;
48
49 dbg("%s", __func__);
50
51 nintf = serial->dev->actconfig->desc.bNumInterfaces;
52 dbg("Num Interfaces = %d", nintf);
53 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
54 dbg("This Interface = %d", ifnum);
55
56 switch (nintf) {
57 case 1:
58 /* QDL mode */
59 if (serial->interface->num_altsetting == 2) {
60 struct usb_host_interface *intf;
61
62 intf = &serial->interface->altsetting[1];
63 if (intf->desc.bNumEndpoints == 2) {
64 if (usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
65 usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
66 dbg("QDL port found");
67 retval = usb_set_interface(serial->dev, ifnum, 1);
68 if (retval < 0) {
69 dev_err(&serial->dev->dev,
70 "Could not set interface, error %d\n",
71 retval);
72 retval = -ENODEV;
73 }
74 return retval;
75 }
76 }
77 }
78 break;
79
80 case 4:
81 /* Composite mode */
82 if (ifnum == 2) {
83 dbg("Modem port found");
84 retval = usb_set_interface(serial->dev, ifnum, 0);
85 if (retval < 0) {
86 dev_err(&serial->dev->dev,
87 "Could not set interface, error %d\n",
88 retval);
89 retval = -ENODEV;
90 }
91 return retval;
92 }
93 break;
94
95 default:
96 dev_err(&serial->dev->dev,
97 "unknown number of interfaces: %d\n", nintf);
98 return -ENODEV;
99 }
100
101 return retval;
102}
103
104static struct usb_serial_driver qcdevice = {
105 .driver = {
106 .owner = THIS_MODULE,
107 .name = "qcserial",
108 },
109 .description = "Qualcomm USB modem",
110 .id_table = id_table,
111 .usb_driver = &qcdriver,
112 .num_ports = 1,
113 .probe = qcprobe,
114};
115
116static int __init qcinit(void)
117{
118 int retval;
119
120 retval = usb_serial_register(&qcdevice);
121 if (retval)
122 return retval;
123
124 retval = usb_register(&qcdriver);
125 if (retval) {
126 usb_serial_deregister(&qcdevice);
127 return retval;
128 }
129
130 return 0;
131}
132
133static void __exit qcexit(void)
134{
135 usb_deregister(&qcdriver);
136 usb_serial_deregister(&qcdevice);
137}
138
139module_init(qcinit);
140module_exit(qcexit);
141
142MODULE_AUTHOR(DRIVER_AUTHOR);
143MODULE_DESCRIPTION(DRIVER_DESC);
144MODULE_LICENSE("GPL v2");
145
146module_param(debug, bool, S_IRUGO | S_IWUSR);
147MODULE_PARM_DESC(debug, "Debug enabled or not");