Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
[linux-2.6.git] / drivers / hid / hid-belkin.c
1 /*
2  *  HID driver for some belkin "special" devices
3  *
4  *  Copyright (c) 1999 Andreas Gal
5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
7  *  Copyright (c) 2006-2007 Jiri Kosina
8  *  Copyright (c) 2007 Paul Walmsley
9  *  Copyright (c) 2008 Jiri Slaby
10  */
11
12 /*
13  * This program is free software; you can redistribute it and/or modify it
14  * under the terms of the GNU General Public License as published by the Free
15  * Software Foundation; either version 2 of the License, or (at your option)
16  * any later version.
17  */
18
19 #include <linux/device.h>
20 #include <linux/hid.h>
21 #include <linux/module.h>
22
23 #include "hid-ids.h"
24
25 #define BELKIN_HIDDEV   0x01
26 #define BELKIN_WKBD     0x02
27
28 #define belkin_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
29                                         EV_KEY, (c))
30 static int belkin_input_mapping(struct hid_device *hdev, struct hid_input *hi,
31                 struct hid_field *field, struct hid_usage *usage,
32                 unsigned long **bit, int *max)
33 {
34         unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
35
36         if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER ||
37                         !(quirks & BELKIN_WKBD))
38                 return 0;
39
40         switch (usage->hid & HID_USAGE) {
41         case 0x03a: belkin_map_key_clear(KEY_SOUND);            break;
42         case 0x03b: belkin_map_key_clear(KEY_CAMERA);           break;
43         case 0x03c: belkin_map_key_clear(KEY_DOCUMENTS);        break;
44         default:
45                 return 0;
46         }
47         return 1;
48 }
49
50 static int belkin_probe(struct hid_device *hdev, const struct hid_device_id *id)
51 {
52         unsigned long quirks = id->driver_data;
53         int ret;
54
55         hid_set_drvdata(hdev, (void *)quirks);
56
57         ret = hid_parse(hdev);
58         if (ret) {
59                 dev_err(&hdev->dev, "parse failed\n");
60                 goto err_free;
61         }
62
63         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
64                 ((quirks & BELKIN_HIDDEV) ? HID_CONNECT_HIDDEV_FORCE : 0));
65         if (ret) {
66                 dev_err(&hdev->dev, "hw start failed\n");
67                 goto err_free;
68         }
69
70         return 0;
71 err_free:
72         return ret;
73 }
74
75 static const struct hid_device_id belkin_devices[] = {
76         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM),
77                 .driver_data = BELKIN_HIDDEV },
78         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD),
79                 .driver_data = BELKIN_WKBD },
80         { }
81 };
82 MODULE_DEVICE_TABLE(hid, belkin_devices);
83
84 static struct hid_driver belkin_driver = {
85         .name = "belkin",
86         .id_table = belkin_devices,
87         .input_mapping = belkin_input_mapping,
88         .probe = belkin_probe,
89 };
90
91 static int __init belkin_init(void)
92 {
93         return hid_register_driver(&belkin_driver);
94 }
95
96 static void __exit belkin_exit(void)
97 {
98         hid_unregister_driver(&belkin_driver);
99 }
100
101 module_init(belkin_init);
102 module_exit(belkin_exit);
103 MODULE_LICENSE("GPL");