xref: /openbmc/linux/drivers/hid/hid-nti.c (revision bbb774d9)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  USB HID quirks support for Network Technologies, Inc. "USB-SUN" USB
4  *  adapter for pre-USB Sun keyboards
5  *
6  *  Copyright (c) 2011 Google, Inc.
7  *
8  * Based on HID apple driver by
9  *  Copyright (c) 1999 Andreas Gal
10  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
11  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
12  *  Copyright (c) 2006-2007 Jiri Kosina
13  *  Copyright (c) 2008 Jiri Slaby <jirislaby@gmail.com>
14  */
15 
16 /*
17  */
18 
19 #include <linux/device.h>
20 #include <linux/input.h>
21 #include <linux/hid.h>
22 #include <linux/module.h>
23 
24 #include "hid-ids.h"
25 
26 MODULE_AUTHOR("Jonathan Klabunde Tomer <jktomer@google.com>");
27 MODULE_DESCRIPTION("HID driver for Network Technologies USB-SUN keyboard adapter");
28 
29 /*
30  * NTI Sun keyboard adapter has wrong logical maximum in report descriptor
31  */
32 static __u8 *nti_usbsun_report_fixup(struct hid_device *hdev, __u8 *rdesc,
33 		unsigned int *rsize)
34 {
35 	if (*rsize >= 60 && rdesc[53] == 0x65 && rdesc[59] == 0x65) {
36 		hid_info(hdev, "fixing up NTI USB-SUN keyboard adapter report descriptor\n");
37 		rdesc[53] = rdesc[59] = 0xe7;
38 	}
39 	return rdesc;
40 }
41 
42 static const struct hid_device_id nti_devices[] = {
43 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTI, USB_DEVICE_ID_USB_SUN) },
44 	{ }
45 };
46 MODULE_DEVICE_TABLE(hid, nti_devices);
47 
48 static struct hid_driver nti_driver = {
49 	.name = "nti",
50 	.id_table = nti_devices,
51 	.report_fixup = nti_usbsun_report_fixup
52 };
53 
54 module_hid_driver(nti_driver);
55 
56 MODULE_LICENSE("GPL");
57