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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
3b239cd7 JS |
2 | /* |
3 | * HID driver for some cherry "special" devices | |
4 | * | |
5 | * Copyright (c) 1999 Andreas Gal | |
6 | * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> | |
7 | * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc | |
8 | * Copyright (c) 2006-2007 Jiri Kosina | |
3b239cd7 JS |
9 | * Copyright (c) 2008 Jiri Slaby |
10 | */ | |
11 | ||
12 | /* | |
3b239cd7 JS |
13 | */ |
14 | ||
15 | #include <linux/device.h> | |
16 | #include <linux/hid.h> | |
17 | #include <linux/module.h> | |
18 | ||
19 | #include "hid-ids.h" | |
20 | ||
21 | /* | |
22 | * Cherry Cymotion keyboard have an invalid HID report descriptor, | |
23 | * that needs fixing before we can parse it. | |
24 | */ | |
73e4008d NK |
25 | static __u8 *ch_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
26 | unsigned int *rsize) | |
3b239cd7 | 27 | { |
4ab25786 | 28 | if (*rsize >= 18 && rdesc[11] == 0x3c && rdesc[12] == 0x02) { |
4291ee30 | 29 | hid_info(hdev, "fixing up Cherry Cymotion report descriptor\n"); |
3b239cd7 JS |
30 | rdesc[11] = rdesc[16] = 0xff; |
31 | rdesc[12] = rdesc[17] = 0x03; | |
32 | } | |
73e4008d | 33 | return rdesc; |
3b239cd7 JS |
34 | } |
35 | ||
36 | #define ch_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ | |
37 | EV_KEY, (c)) | |
38 | static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi, | |
39 | struct hid_field *field, struct hid_usage *usage, | |
40 | unsigned long **bit, int *max) | |
41 | { | |
42 | if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER) | |
43 | return 0; | |
44 | ||
45 | switch (usage->hid & HID_USAGE) { | |
46 | case 0x301: ch_map_key_clear(KEY_PROG1); break; | |
47 | case 0x302: ch_map_key_clear(KEY_PROG2); break; | |
48 | case 0x303: ch_map_key_clear(KEY_PROG3); break; | |
49 | default: | |
50 | return 0; | |
51 | } | |
52 | ||
53 | return 1; | |
54 | } | |
55 | ||
56 | static const struct hid_device_id ch_devices[] = { | |
57 | { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) }, | |
1ce31b25 | 58 | { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) }, |
3b239cd7 JS |
59 | { } |
60 | }; | |
61 | MODULE_DEVICE_TABLE(hid, ch_devices); | |
62 | ||
63 | static struct hid_driver ch_driver = { | |
64 | .name = "cherry", | |
65 | .id_table = ch_devices, | |
66 | .report_fixup = ch_report_fixup, | |
67 | .input_mapping = ch_input_mapping, | |
68 | }; | |
f425458e | 69 | module_hid_driver(ch_driver); |
3b239cd7 | 70 | |
3b239cd7 | 71 | MODULE_LICENSE("GPL"); |