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1 | /* |
2 | * HID driver for some ezkey "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/input.h> |
21 | #include <linux/hid.h> |
22 | #include <linux/module.h> |
23 | |
24 | #include "hid-ids.h" |
25 | |
26 | #define ez_map_rel(c) hid_map_usage(hi, usage, bit, max, EV_REL, (c)) |
27 | #define ez_map_key(c) hid_map_usage(hi, usage, bit, max, EV_KEY, (c)) |
28 | |
29 | static int ez_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 | if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER) |
34 | return 0; |
35 | |
36 | switch (usage->hid & HID_USAGE) { |
37 | case 0x230: ez_map_key(BTN_MOUSE); break; |
38 | case 0x231: ez_map_rel(REL_WHEEL); break; |
39 | /* |
40 | * this keyboard has a scrollwheel implemented in |
41 | * totally broken way. We map this usage temporarily |
42 | * to HWHEEL and handle it in the event quirk handler |
43 | */ |
44 | case 0x232: ez_map_rel(REL_HWHEEL); break; |
45 | default: |
46 | return 0; |
47 | } |
48 | return 1; |
49 | } |
50 | |
51 | static int ez_event(struct hid_device *hdev, struct hid_field *field, |
52 | struct hid_usage *usage, __s32 value) |
53 | { |
54 | if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput || |
55 | !usage->type) |
56 | return 0; |
57 | |
58 | /* handle the temporary quirky mapping to HWHEEL */ |
59 | if (usage->type == EV_REL && usage->code == REL_HWHEEL) { |
60 | struct input_dev *input = field->hidinput->input; |
61 | input_event(input, usage->type, REL_WHEEL, -value); |
62 | return 1; |
63 | } |
64 | |
65 | return 0; |
66 | } |
67 | |
68 | static const struct hid_device_id ez_devices[] = { |
69 | { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) }, |
70 | { } |
71 | }; |
72 | MODULE_DEVICE_TABLE(hid, ez_devices); |
73 | |
74 | static struct hid_driver ez_driver = { |
75 | .name = "ezkey", |
76 | .id_table = ez_devices, |
77 | .input_mapping = ez_input_mapping, |
78 | .event = ez_event, |
79 | }; |
80 | |
81 | static int __init ez_init(void) |
82 | { |
83 | return hid_register_driver(&ez_driver); |
84 | } |
85 | |
86 | static void __exit ez_exit(void) |
87 | { |
88 | hid_unregister_driver(&ez_driver); |
89 | } |
90 | |
91 | module_init(ez_init); |
92 | module_exit(ez_exit); |
93 | MODULE_LICENSE("GPL"); |
94 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9