Commit | Line | Data |
---|---|---|
1f243e30 JS |
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 ez_init(void) | |
82 | { | |
83 | return hid_register_driver(&ez_driver); | |
84 | } | |
85 | ||
86 | static void 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"); |