HID: add support for cymotion master solar keyboard
[linux-2.6.git] / drivers / hid / hid-cherry.c
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) 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/hid.h>
21 #include <linux/module.h>
22
23 #include "hid-ids.h"
24
25 /*
26  * Cherry Cymotion keyboard have an invalid HID report descriptor,
27  * that needs fixing before we can parse it.
28  */
29 static void ch_report_fixup(struct hid_device *hdev, __u8 *rdesc,
30                 unsigned int rsize)
31 {
32         if (rsize >= 17 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
33                 dev_info(&hdev->dev, "fixing up Cherry Cymotion report "
34                                 "descriptor\n");
35                 rdesc[11] = rdesc[16] = 0xff;
36                 rdesc[12] = rdesc[17] = 0x03;
37         }
38 }
39
40 #define ch_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \
41                                         EV_KEY, (c))
42 static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
43                 struct hid_field *field, struct hid_usage *usage,
44                 unsigned long **bit, int *max)
45 {
46         if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
47                 return 0;
48
49         switch (usage->hid & HID_USAGE) {
50         case 0x301: ch_map_key_clear(KEY_PROG1);        break;
51         case 0x302: ch_map_key_clear(KEY_PROG2);        break;
52         case 0x303: ch_map_key_clear(KEY_PROG3);        break;
53         default:
54                 return 0;
55         }
56
57         return 1;
58 }
59
60 static const struct hid_device_id ch_devices[] = {
61         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
62         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
63         { }
64 };
65 MODULE_DEVICE_TABLE(hid, ch_devices);
66
67 static struct hid_driver ch_driver = {
68         .name = "cherry",
69         .id_table = ch_devices,
70         .report_fixup = ch_report_fixup,
71         .input_mapping = ch_input_mapping,
72 };
73
74 static int __init ch_init(void)
75 {
76         return hid_register_driver(&ch_driver);
77 }
78
79 static void __exit ch_exit(void)
80 {
81         hid_unregister_driver(&ch_driver);
82 }
83
84 module_init(ch_init);
85 module_exit(ch_exit);
86 MODULE_LICENSE("GPL");