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1 | /* |
2 | * HID driver for some cherry "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 | /* |
25 | * Cherry Cymotion keyboard have an invalid HID report descriptor, |
26 | * that needs fixing before we can parse it. |
27 | */ |
28 | static __u8 *ch_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
29 | unsigned int *rsize) |
30 | { |
31 | if (*rsize >= 17 && rdesc[11] == 0x3c && rdesc[12] == 0x02) { |
32 | hid_info(hdev, "fixing up Cherry Cymotion report descriptor\n"); |
33 | rdesc[11] = rdesc[16] = 0xff; |
34 | rdesc[12] = rdesc[17] = 0x03; |
35 | } |
36 | return rdesc; |
37 | } |
38 | |
39 | #define ch_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ |
40 | EV_KEY, (c)) |
41 | static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
42 | struct hid_field *field, struct hid_usage *usage, |
43 | unsigned long **bit, int *max) |
44 | { |
45 | if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER) |
46 | return 0; |
47 | |
48 | switch (usage->hid & HID_USAGE) { |
49 | case 0x301: ch_map_key_clear(KEY_PROG1); break; |
50 | case 0x302: ch_map_key_clear(KEY_PROG2); break; |
51 | case 0x303: ch_map_key_clear(KEY_PROG3); break; |
52 | default: |
53 | return 0; |
54 | } |
55 | |
56 | return 1; |
57 | } |
58 | |
59 | static const struct hid_device_id ch_devices[] = { |
60 | { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) }, |
61 | { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) }, |
62 | { } |
63 | }; |
64 | MODULE_DEVICE_TABLE(hid, ch_devices); |
65 | |
66 | static struct hid_driver ch_driver = { |
67 | .name = "cherry", |
68 | .id_table = ch_devices, |
69 | .report_fixup = ch_report_fixup, |
70 | .input_mapping = ch_input_mapping, |
71 | }; |
72 | module_hid_driver(ch_driver); |
73 | |
74 | MODULE_LICENSE("GPL"); |
75 |
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