xref: /openbmc/linux/drivers/hid/hid-asus.c (revision bc5aa3a0)
1 /*
2  *  HID driver for Asus notebook built-in keyboard.
3  *  Fixes small logical maximum to match usage maximum.
4  *
5  *  Currently supported devices are:
6  *    EeeBook X205TA
7  *    VivoBook E200HA
8  *
9  *  Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
10  *
11  *  This module based on hid-ortek by
12  *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
13  *  Copyright (c) 2011 Jiri Kosina
14  */
15 
16 /*
17  * This program is free software; you can redistribute it and/or modify it
18  * under the terms of the GNU General Public License as published by the Free
19  * Software Foundation; either version 2 of the License, or (at your option)
20  * any later version.
21  */
22 
23 #include <linux/device.h>
24 #include <linux/hid.h>
25 #include <linux/module.h>
26 
27 #include "hid-ids.h"
28 
29 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
30 		unsigned int *rsize)
31 {
32 	if (*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
33 		hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
34 		rdesc[55] = 0xdd;
35 	}
36 	return rdesc;
37 }
38 
39 static const struct hid_device_id asus_devices[] = {
40 	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD) },
41 	{ }
42 };
43 MODULE_DEVICE_TABLE(hid, asus_devices);
44 
45 static struct hid_driver asus_driver = {
46 	.name = "asus",
47 	.id_table = asus_devices,
48 	.report_fixup = asus_report_fixup
49 };
50 module_hid_driver(asus_driver);
51 
52 MODULE_LICENSE("GPL");
53