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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * HID driver for Holtek gaming mice
4 * Copyright (c) 2013 Christian Ohm
5 * Heavily inspired by various other HID drivers that adjust the report
6 * descriptor.
7*/
8
9/*
10 */
11
12#include <linux/hid.h>
13#include <linux/module.h>
14#include <linux/usb.h>
15
16#include "hid-ids.h"
17
18/*
19 * The report descriptor of some Holtek based gaming mice specifies an
20 * excessively large number of consumer usages (2^15), which is more than
21 * HID_MAX_USAGES. This prevents proper parsing of the report descriptor.
22 *
23 * This driver fixes the report descriptor for:
24 * - USB ID 04d9:a067, sold as Sharkoon Drakonia and Perixx MX-2000
25 * - USB ID 04d9:a04a, sold as Tracer Sniper TRM-503, NOVA Gaming Slider X200
26 * and Zalman ZM-GM1
27 * - USB ID 04d9:a081, sold as SHARKOON DarkGlider Gaming mouse
28 * - USB ID 04d9:a072, sold as LEETGION Hellion Gaming Mouse
29 * - USB ID 04d9:a0c2, sold as ETEKCITY Scroll T-140 Gaming Mouse
30 */
31
32static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
33 unsigned int *rsize)
34{
35 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
36
37 if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
38 /* Change usage maximum and logical maximum from 0x7fff to
39 * 0x2fff, so they don't exceed HID_MAX_USAGES */
40 switch (hdev->product) {
41 case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067:
42 case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072:
43 case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2:
44 if (*rsize >= 122 && rdesc[115] == 0xff && rdesc[116] == 0x7f
45 && rdesc[120] == 0xff && rdesc[121] == 0x7f) {
46 hid_info(hdev, "Fixing up report descriptor\n");
47 rdesc[116] = rdesc[121] = 0x2f;
48 }
49 break;
50 case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A:
51 case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070:
52 case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081:
53 if (*rsize >= 113 && rdesc[106] == 0xff && rdesc[107] == 0x7f
54 && rdesc[111] == 0xff && rdesc[112] == 0x7f) {
55 hid_info(hdev, "Fixing up report descriptor\n");
56 rdesc[107] = rdesc[112] = 0x2f;
57 }
58 break;
59 }
60
61 }
62 return rdesc;
63}
64
65static const struct hid_device_id holtek_mouse_devices[] = {
66 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
67 USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
68 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
69 USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
70 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
71 USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
72 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
73 USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
74 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
75 USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
76 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
77 USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) },
78 { }
79};
80MODULE_DEVICE_TABLE(hid, holtek_mouse_devices);
81
82static struct hid_driver holtek_mouse_driver = {
83 .name = "holtek_mouse",
84 .id_table = holtek_mouse_devices,
85 .report_fixup = holtek_mouse_report_fixup,
86};
87
88module_hid_driver(holtek_mouse_driver);
89MODULE_LICENSE("GPL");
1/*
2 * HID driver for Holtek gaming mice
3 * Copyright (c) 2013 Christian Ohm
4 * Heavily inspired by various other HID drivers that adjust the report
5 * descriptor.
6*/
7
8/*
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 */
14
15#include <linux/hid.h>
16#include <linux/module.h>
17#include <linux/usb.h>
18
19#include "hid-ids.h"
20
21/*
22 * The report descriptor of some Holtek based gaming mice specifies an
23 * excessively large number of consumer usages (2^15), which is more than
24 * HID_MAX_USAGES. This prevents proper parsing of the report descriptor.
25 *
26 * This driver fixes the report descriptor for:
27 * - USB ID 04d9:a067, sold as Sharkoon Drakonia and Perixx MX-2000
28 * - USB ID 04d9:a04a, sold as Tracer Sniper TRM-503, NOVA Gaming Slider X200
29 * and Zalman ZM-GM1
30 * - USB ID 04d9:a081, sold as SHARKOON DarkGlider Gaming mouse
31 * - USB ID 04d9:a072, sold as LEETGION Hellion Gaming Mouse
32 */
33
34static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
35 unsigned int *rsize)
36{
37 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
38
39 if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
40 /* Change usage maximum and logical maximum from 0x7fff to
41 * 0x2fff, so they don't exceed HID_MAX_USAGES */
42 switch (hdev->product) {
43 case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067:
44 case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072:
45 if (*rsize >= 122 && rdesc[115] == 0xff && rdesc[116] == 0x7f
46 && rdesc[120] == 0xff && rdesc[121] == 0x7f) {
47 hid_info(hdev, "Fixing up report descriptor\n");
48 rdesc[116] = rdesc[121] = 0x2f;
49 }
50 break;
51 case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A:
52 case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070:
53 case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081:
54 if (*rsize >= 113 && rdesc[106] == 0xff && rdesc[107] == 0x7f
55 && rdesc[111] == 0xff && rdesc[112] == 0x7f) {
56 hid_info(hdev, "Fixing up report descriptor\n");
57 rdesc[107] = rdesc[112] = 0x2f;
58 }
59 break;
60 }
61
62 }
63 return rdesc;
64}
65
66static const struct hid_device_id holtek_mouse_devices[] = {
67 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
68 USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
69 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
70 USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
71 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
72 USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
73 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
74 USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
75 { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
76 USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
77 { }
78};
79MODULE_DEVICE_TABLE(hid, holtek_mouse_devices);
80
81static struct hid_driver holtek_mouse_driver = {
82 .name = "holtek_mouse",
83 .id_table = holtek_mouse_devices,
84 .report_fixup = holtek_mouse_report_fixup,
85};
86
87module_hid_driver(holtek_mouse_driver);
88MODULE_LICENSE("GPL");