xref: /openbmc/linux/drivers/hid/hid-monterey.c (revision ebd09753)
1 /*
2  *  HID driver for some monterey "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 static __u8 *mr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
25 		unsigned int *rsize)
26 {
27 	if (*rsize >= 31 && rdesc[29] == 0x05 && rdesc[30] == 0x09) {
28 		hid_info(hdev, "fixing up button/consumer in HID report descriptor\n");
29 		rdesc[30] = 0x0c;
30 	}
31 	return rdesc;
32 }
33 
34 #define mr_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, max, \
35 					EV_KEY, (c))
36 static int mr_input_mapping(struct hid_device *hdev, struct hid_input *hi,
37 		struct hid_field *field, struct hid_usage *usage,
38 		unsigned long **bit, int *max)
39 {
40 	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
41 		return 0;
42 
43 	switch (usage->hid & HID_USAGE) {
44 	case 0x156: mr_map_key_clear(KEY_WORDPROCESSOR);	break;
45 	case 0x157: mr_map_key_clear(KEY_SPREADSHEET);		break;
46 	case 0x158: mr_map_key_clear(KEY_PRESENTATION);		break;
47 	case 0x15c: mr_map_key_clear(KEY_STOP);			break;
48 	default:
49 		return 0;
50 	}
51 	return 1;
52 }
53 
54 static const struct hid_device_id mr_devices[] = {
55 	{ HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
56 	{ }
57 };
58 MODULE_DEVICE_TABLE(hid, mr_devices);
59 
60 static struct hid_driver mr_driver = {
61 	.name = "monterey",
62 	.id_table = mr_devices,
63 	.report_fixup = mr_report_fixup,
64 	.input_mapping = mr_input_mapping,
65 };
66 module_hid_driver(mr_driver);
67 
68 MODULE_LICENSE("GPL");
69