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/*
* HID driver for Saitek devices, currently only the PS1000 (USB gamepad).
* Fixes the HID report descriptor by removing a non-existent axis and
* clearing the constant bit on the input reports for buttons and d-pad.
* (This module is based on "hid-ortek".)
*
* Copyright (c) 2012 Andreas Hübner
*/
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include "hid-ids.h"
static __u8 *saitek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
if (*rsize == 137 && rdesc[20] == 0x09 && rdesc[21] == 0x33
&& rdesc[94] == 0x81 && rdesc[95] == 0x03
&& rdesc[110] == 0x81 && rdesc[111] == 0x03) {
hid_info(hdev, "Fixing up Saitek PS1000 report descriptor\n");
/* convert spurious axis to a "noop" Logical Minimum (0) */
rdesc[20] = 0x15;
rdesc[21] = 0x00;
/* clear constant bit on buttons and d-pad */
rdesc[95] = 0x02;
rdesc[111] = 0x02;
}
return rdesc;
}
static const struct hid_device_id saitek_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000)},
{ }
};
MODULE_DEVICE_TABLE(hid, saitek_devices);
static struct hid_driver saitek_driver = {
.name = "saitek",
.id_table = saitek_devices,
.report_fixup = saitek_report_fixup
};
static int __init saitek_init(void)
{
return hid_register_driver(&saitek_driver);
}
static void __exit saitek_exit(void)
{
hid_unregister_driver(&saitek_driver);
}
module_init(saitek_init);
module_exit(saitek_exit);
MODULE_LICENSE("GPL");
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