Merge branch 'kmemtrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6] / drivers / hid / hid-kensington.c
1 /*
2  *  HID driver for Kensigton Slimblade Trackball
3  *
4  *  Copyright (c) 2009 Jiri Kosina
5  */
6
7 /*
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of the GNU General Public License as published by the Free
10  * Software Foundation; either version 2 of the License, or (at your option)
11  * any later version.
12  */
13
14 #include <linux/device.h>
15 #include <linux/input.h>
16 #include <linux/hid.h>
17 #include <linux/module.h>
18
19 #include "hid-ids.h"
20
21 #define ks_map_key(c)   hid_map_usage(hi, usage, bit, max, EV_KEY, (c))
22
23 static int ks_input_mapping(struct hid_device *hdev, struct hid_input *hi,
24                 struct hid_field *field, struct hid_usage *usage,
25                 unsigned long **bit, int *max)
26 {
27         if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)
28                 return 0;
29
30         switch (usage->hid & HID_USAGE) {
31         case 0x01: ks_map_key(BTN_MIDDLE);      break;
32         case 0x02: ks_map_key(BTN_SIDE);        break;
33         default:
34                 return 0;
35         }
36         return 1;
37 }
38
39 static const struct hid_device_id ks_devices[] = {
40         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
41         { }
42 };
43 MODULE_DEVICE_TABLE(hid, ks_devices);
44
45 static struct hid_driver ks_driver = {
46         .name = "kensington",
47         .id_table = ks_devices,
48         .input_mapping = ks_input_mapping,
49 };
50
51 static int ks_init(void)
52 {
53         return hid_register_driver(&ks_driver);
54 }
55
56 static void ks_exit(void)
57 {
58         hid_unregister_driver(&ks_driver);
59 }
60
61 module_init(ks_init);
62 module_exit(ks_exit);
63 MODULE_LICENSE("GPL");