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a78b4282 GKH |
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 | ||
22 | static int debug; | |
23 | ||
24 | static struct usb_device_id id_table[] = { | |
25 | {USB_DEVICE(0x05c6, 0x9211)}, /* Acer Gobi QDL device */ | |
26 | {USB_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */ | |
fd8345f8 AS |
27 | {USB_DEVICE(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */ |
28 | {USB_DEVICE(0x03f0, 0x201d)}, /* HP un2400 Gobi QDL Device */ | |
a78b4282 GKH |
29 | { } /* Terminating entry */ |
30 | }; | |
31 | MODULE_DEVICE_TABLE(usb, id_table); | |
32 | ||
33 | static 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 | ||
43 | static 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 | ||
104 | static 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 | ||
116 | static 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 | ||
133 | static void __exit qcexit(void) | |
134 | { | |
135 | usb_deregister(&qcdriver); | |
136 | usb_serial_deregister(&qcdevice); | |
137 | } | |
138 | ||
139 | module_init(qcinit); | |
140 | module_exit(qcexit); | |
141 | ||
142 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
143 | MODULE_DESCRIPTION(DRIVER_DESC); | |
144 | MODULE_LICENSE("GPL v2"); | |
145 | ||
146 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
147 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |