c99f818878
module_hid_driver() makes the code simpler by eliminating boilerplate code. Reported-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
|
|
* HID driver for Holtek gaming mice
|
|
* Copyright (c) 2013 Christian Ohm
|
|
* Heavily inspired by various other HID drivers that adjust the report
|
|
* descriptor.
|
|
*/
|
|
|
|
/*
|
|
* 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/hid.h>
|
|
#include <linux/module.h>
|
|
#include <linux/usb.h>
|
|
|
|
#include "hid-ids.h"
|
|
|
|
/*
|
|
* The report descriptor of some Holtek based gaming mice specifies an
|
|
* excessively large number of consumer usages (2^15), which is more than
|
|
* HID_MAX_USAGES. This prevents proper parsing of the report descriptor.
|
|
*
|
|
* This driver fixes the report descriptor for:
|
|
* - USB ID 04d9:a067, sold as Sharkoon Drakonia and Perixx MX-2000
|
|
* - USB ID 04d9:a04a, sold as Tracer Sniper TRM-503, NOVA Gaming Slider X200
|
|
* and Zalman ZM-GM1
|
|
*/
|
|
|
|
static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
|
|
unsigned int *rsize)
|
|
{
|
|
struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
|
|
|
|
if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
|
|
/* Change usage maximum and logical maximum from 0x7fff to
|
|
* 0x2fff, so they don't exceed HID_MAX_USAGES */
|
|
switch (hdev->product) {
|
|
case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067:
|
|
if (*rsize >= 122 && rdesc[115] == 0xff && rdesc[116] == 0x7f
|
|
&& rdesc[120] == 0xff && rdesc[121] == 0x7f) {
|
|
hid_info(hdev, "Fixing up report descriptor\n");
|
|
rdesc[116] = rdesc[121] = 0x2f;
|
|
}
|
|
break;
|
|
case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A:
|
|
if (*rsize >= 113 && rdesc[106] == 0xff && rdesc[107] == 0x7f
|
|
&& rdesc[111] == 0xff && rdesc[112] == 0x7f) {
|
|
hid_info(hdev, "Fixing up report descriptor\n");
|
|
rdesc[107] = rdesc[112] = 0x2f;
|
|
}
|
|
break;
|
|
}
|
|
|
|
}
|
|
return rdesc;
|
|
}
|
|
|
|
static const struct hid_device_id holtek_mouse_devices[] = {
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
|
|
USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
|
|
USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(hid, holtek_mouse_devices);
|
|
|
|
static struct hid_driver holtek_mouse_driver = {
|
|
.name = "holtek_mouse",
|
|
.id_table = holtek_mouse_devices,
|
|
.report_fixup = holtek_mouse_report_fixup,
|
|
};
|
|
|
|
module_hid_driver(holtek_mouse_driver);
|
|
MODULE_LICENSE("GPL");
|