Christian Ohm | 41de326 | 2013-05-21 01:31:08 +0200 | [diff] [blame] | 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 | * |
Christian Ohm | d4f5189 | 2013-05-21 01:31:09 +0200 | [diff] [blame] | 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 |
Anders F. U. Kiær | 7da7cbb | 2013-10-01 19:22:05 +0200 | [diff] [blame] | 30 | * - USB ID 04d9:a081, sold as SHARKOON DarkGlider Gaming mouse |
Christian Ohm | 41de326 | 2013-05-21 01:31:08 +0200 | [diff] [blame] | 31 | */ |
| 32 | |
| 33 | static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
| 34 | unsigned int *rsize) |
| 35 | { |
| 36 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
| 37 | |
| 38 | if (intf->cur_altsetting->desc.bInterfaceNumber == 1) { |
| 39 | /* Change usage maximum and logical maximum from 0x7fff to |
| 40 | * 0x2fff, so they don't exceed HID_MAX_USAGES */ |
Christian Ohm | d4f5189 | 2013-05-21 01:31:09 +0200 | [diff] [blame] | 41 | switch (hdev->product) { |
| 42 | case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067: |
| 43 | if (*rsize >= 122 && rdesc[115] == 0xff && rdesc[116] == 0x7f |
| 44 | && rdesc[120] == 0xff && rdesc[121] == 0x7f) { |
| 45 | hid_info(hdev, "Fixing up report descriptor\n"); |
| 46 | rdesc[116] = rdesc[121] = 0x2f; |
| 47 | } |
| 48 | break; |
| 49 | case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A: |
Anders F. U. Kiær | 7da7cbb | 2013-10-01 19:22:05 +0200 | [diff] [blame] | 50 | case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081: |
Christian Ohm | d4f5189 | 2013-05-21 01:31:09 +0200 | [diff] [blame] | 51 | if (*rsize >= 113 && rdesc[106] == 0xff && rdesc[107] == 0x7f |
| 52 | && rdesc[111] == 0xff && rdesc[112] == 0x7f) { |
| 53 | hid_info(hdev, "Fixing up report descriptor\n"); |
| 54 | rdesc[107] = rdesc[112] = 0x2f; |
| 55 | } |
| 56 | break; |
Christian Ohm | 41de326 | 2013-05-21 01:31:08 +0200 | [diff] [blame] | 57 | } |
Christian Ohm | d4f5189 | 2013-05-21 01:31:09 +0200 | [diff] [blame] | 58 | |
Christian Ohm | 41de326 | 2013-05-21 01:31:08 +0200 | [diff] [blame] | 59 | } |
| 60 | return rdesc; |
| 61 | } |
| 62 | |
| 63 | static const struct hid_device_id holtek_mouse_devices[] = { |
| 64 | { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, |
| 65 | USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) }, |
Christian Ohm | d4f5189 | 2013-05-21 01:31:09 +0200 | [diff] [blame] | 66 | { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, |
| 67 | USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) }, |
Anders F. U. Kiær | 7da7cbb | 2013-10-01 19:22:05 +0200 | [diff] [blame] | 68 | { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, |
| 69 | USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) }, |
Christian Ohm | 41de326 | 2013-05-21 01:31:08 +0200 | [diff] [blame] | 70 | { } |
| 71 | }; |
| 72 | MODULE_DEVICE_TABLE(hid, holtek_mouse_devices); |
| 73 | |
| 74 | static struct hid_driver holtek_mouse_driver = { |
| 75 | .name = "holtek_mouse", |
| 76 | .id_table = holtek_mouse_devices, |
| 77 | .report_fixup = holtek_mouse_report_fixup, |
| 78 | }; |
| 79 | |
Wei Yongjun | c99f818 | 2013-05-29 18:09:22 +0800 | [diff] [blame] | 80 | module_hid_driver(holtek_mouse_driver); |
Christian Ohm | 41de326 | 2013-05-21 01:31:08 +0200 | [diff] [blame] | 81 | MODULE_LICENSE("GPL"); |