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