drivers/hid/hid-asus.c

   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");