HID: force feedback driver for GreenAsia 0x12 PID
[linux-2.6.git] / drivers / hid / hid-ntrig.c
1 /*
2  *  HID driver for some ntrig "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  *  Copyright (c) 2008 Rafi Rubin
11  *
12  */
13
14 /*
15  * This program is free software; you can redistribute it and/or modify it
16  * under the terms of the GNU General Public License as published by the Free
17  * Software Foundation; either version 2 of the License, or (at your option)
18  * any later version.
19  */
20
21 #include <linux/device.h>
22 #include <linux/hid.h>
23 #include <linux/module.h>
24
25 #include "hid-ids.h"
26
27 #define NTRIG_DUPLICATE_USAGES  0x001
28
29 #define nt_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \
30                                         EV_KEY, (c))
31
32 static int ntrig_input_mapping(struct hid_device *hdev, struct hid_input *hi,
33                 struct hid_field *field, struct hid_usage *usage,
34                 unsigned long **bit, int *max)
35 {
36         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_DIGITIZER &&
37                         (usage->hid & 0xff) == 0x47) {
38                 nt_map_key_clear(BTN_TOOL_DOUBLETAP);
39                 return 1;
40         }
41         return 0;
42 }
43
44 static int ntrig_input_mapped(struct hid_device *hdev, struct hid_input *hi,
45                 struct hid_field *field, struct hid_usage *usage,
46                 unsigned long **bit, int *max)
47 {
48         if (usage->type == EV_KEY || usage->type == EV_REL
49                         || usage->type == EV_ABS)
50                 clear_bit(usage->code, *bit);
51
52         return 0;
53 }
54 static const struct hid_device_id ntrig_devices[] = {
55         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN),
56                 .driver_data = NTRIG_DUPLICATE_USAGES },
57         { }
58 };
59 MODULE_DEVICE_TABLE(hid, ntrig_devices);
60
61 static struct hid_driver ntrig_driver = {
62         .name = "ntrig",
63         .id_table = ntrig_devices,
64         .input_mapping = ntrig_input_mapping,
65         .input_mapped = ntrig_input_mapped,
66 };
67
68 static int ntrig_init(void)
69 {
70         return hid_register_driver(&ntrig_driver);
71 }
72
73 static void ntrig_exit(void)
74 {
75         hid_unregister_driver(&ntrig_driver);
76 }
77
78 module_init(ntrig_init);
79 module_exit(ntrig_exit);
80 MODULE_LICENSE("GPL");
81
82 HID_COMPAT_LOAD_DRIVER(ntrig);