Merge tag 'pci-v3.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
[linux-2.6-microblaze.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) 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))
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
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");