xref: /openbmc/linux/drivers/hid/hid-nti.c (revision 2d972b6a)
1 /*
2  *  USB HID quirks support for Network Technologies, Inc. "USB-SUN" USB
3  *  adapter for pre-USB Sun keyboards
4  *
5  *  Copyright (c) 2011 Google, Inc.
6  *
7  * Based on HID apple driver by
8  *  Copyright (c) 1999 Andreas Gal
9  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
10  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
11  *  Copyright (c) 2006-2007 Jiri Kosina
12  *  Copyright (c) 2008 Jiri Slaby <jirislaby@gmail.com>
13  */
14 
15 /*
16  * This program is free software; you can redistribute it and/or modify it
17  * under the terms of the GNU General Public License as published by the Free
18  * Software Foundation; either version 2 of the License, or (at your option)
19  * any later version.
20  */
21 
22 #include <linux/device.h>
23 #include <linux/input.h>
24 #include <linux/hid.h>
25 #include <linux/module.h>
26 
27 #include "hid-ids.h"
28 
29 MODULE_AUTHOR("Jonathan Klabunde Tomer <jktomer@google.com>");
30 MODULE_DESCRIPTION("HID driver for Network Technologies USB-SUN keyboard adapter");
31 
32 /*
33  * NTI Sun keyboard adapter has wrong logical maximum in report descriptor
34  */
35 static __u8 *nti_usbsun_report_fixup(struct hid_device *hdev, __u8 *rdesc,
36 		unsigned int *rsize)
37 {
38 	if (*rsize >= 60 && rdesc[53] == 0x65 && rdesc[59] == 0x65) {
39 		hid_info(hdev, "fixing up NTI USB-SUN keyboard adapter report descriptor\n");
40 		rdesc[53] = rdesc[59] = 0xe7;
41 	}
42 	return rdesc;
43 }
44 
45 static const struct hid_device_id nti_devices[] = {
46 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTI, USB_DEVICE_ID_USB_SUN) },
47 	{ }
48 };
49 MODULE_DEVICE_TABLE(hid, nti_devices);
50 
51 static struct hid_driver nti_driver = {
52 	.name = "nti",
53 	.id_table = nti_devices,
54 	.report_fixup = nti_usbsun_report_fixup
55 };
56 
57 module_hid_driver(nti_driver);
58 
59 MODULE_LICENSE("GPL");
60