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) 2008 Jiri Slaby
9 */
10
11 /*
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the Free
14 * Software Foundation; either version 2 of the License, or (at your option)
15 * any later version.
16 */
17
18 #include <linux/device.h>
19 #include <linux/hid.h>
20 #include <linux/module.h>
21
22 #include "hid-ids.h"
23
24 #define BELKIN_HIDDEV 0x01
25 #define BELKIN_WKBD 0x02
26
27 #define belkin_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
28 EV_KEY, (c))
belkin_input_mapping(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)29 static int belkin_input_mapping(struct hid_device *hdev, struct hid_input *hi,
30 struct hid_field *field, struct hid_usage *usage,
31 unsigned long **bit, int *max)
32 {
33 unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
34
35 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER ||
36 !(quirks & BELKIN_WKBD))
37 return 0;
38
39 switch (usage->hid & HID_USAGE) {
40 case 0x03a: belkin_map_key_clear(KEY_SOUND); break;
41 case 0x03b: belkin_map_key_clear(KEY_CAMERA); break;
42 case 0x03c: belkin_map_key_clear(KEY_DOCUMENTS); break;
43 default:
44 return 0;
45 }
46 return 1;
47 }
48
belkin_probe(struct hid_device * hdev,const struct hid_device_id * id)49 static int belkin_probe(struct hid_device *hdev, const struct hid_device_id *id)
50 {
51 unsigned long quirks = id->driver_data;
52 int ret;
53
54 hid_set_drvdata(hdev, (void *)quirks);
55
56 ret = hid_parse(hdev);
57 if (ret) {
58 hid_err(hdev, "parse failed\n");
59 goto err_free;
60 }
61
62 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
63 ((quirks & BELKIN_HIDDEV) ? HID_CONNECT_HIDDEV_FORCE : 0));
64 if (ret) {
65 hid_err(hdev, "hw start failed\n");
66 goto err_free;
67 }
68
69 return 0;
70 err_free:
71 return ret;
72 }
73
74 static const struct hid_device_id belkin_devices[] = {
75 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM),
76 .driver_data = BELKIN_HIDDEV },
77 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD),
78 .driver_data = BELKIN_WKBD },
79 { }
80 };
81 MODULE_DEVICE_TABLE(hid, belkin_devices);
82
83 static struct hid_driver belkin_driver = {
84 .name = "belkin",
85 .id_table = belkin_devices,
86 .input_mapping = belkin_input_mapping,
87 .probe = belkin_probe,
88 };
89 module_hid_driver(belkin_driver);
90
91 MODULE_LICENSE("GPL");
92