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89 lines
2.8 KiB
89 lines
2.8 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* HID driver for Holtek gaming mice |
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* Copyright (c) 2013 Christian Ohm |
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* Heavily inspired by various other HID drivers that adjust the report |
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* descriptor. |
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*/ |
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/* |
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*/ |
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#include <linux/hid.h> |
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#include <linux/module.h> |
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#include <linux/usb.h> |
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#include "hid-ids.h" |
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/* |
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* The report descriptor of some Holtek based gaming mice specifies an |
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* excessively large number of consumer usages (2^15), which is more than |
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* HID_MAX_USAGES. This prevents proper parsing of the report descriptor. |
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* |
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* This driver fixes the report descriptor for: |
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* - USB ID 04d9:a067, sold as Sharkoon Drakonia and Perixx MX-2000 |
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* - USB ID 04d9:a04a, sold as Tracer Sniper TRM-503, NOVA Gaming Slider X200 |
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* and Zalman ZM-GM1 |
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* - USB ID 04d9:a081, sold as SHARKOON DarkGlider Gaming mouse |
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* - USB ID 04d9:a072, sold as LEETGION Hellion Gaming Mouse |
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* - USB ID 04d9:a0c2, sold as ETEKCITY Scroll T-140 Gaming Mouse |
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*/ |
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static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
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unsigned int *rsize) |
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{ |
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
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if (intf->cur_altsetting->desc.bInterfaceNumber == 1) { |
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/* Change usage maximum and logical maximum from 0x7fff to |
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* 0x2fff, so they don't exceed HID_MAX_USAGES */ |
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switch (hdev->product) { |
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067: |
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072: |
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2: |
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if (*rsize >= 122 && rdesc[115] == 0xff && rdesc[116] == 0x7f |
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&& rdesc[120] == 0xff && rdesc[121] == 0x7f) { |
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hid_info(hdev, "Fixing up report descriptor\n"); |
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rdesc[116] = rdesc[121] = 0x2f; |
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} |
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break; |
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A: |
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070: |
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081: |
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if (*rsize >= 113 && rdesc[106] == 0xff && rdesc[107] == 0x7f |
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&& rdesc[111] == 0xff && rdesc[112] == 0x7f) { |
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hid_info(hdev, "Fixing up report descriptor\n"); |
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rdesc[107] = rdesc[112] = 0x2f; |
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} |
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break; |
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} |
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} |
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return rdesc; |
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} |
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static const struct hid_device_id holtek_mouse_devices[] = { |
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, |
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) }, |
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, |
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) }, |
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, |
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) }, |
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, |
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) }, |
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, |
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) }, |
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, |
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(hid, holtek_mouse_devices); |
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static struct hid_driver holtek_mouse_driver = { |
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.name = "holtek_mouse", |
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.id_table = holtek_mouse_devices, |
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.report_fixup = holtek_mouse_report_fixup, |
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}; |
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module_hid_driver(holtek_mouse_driver); |
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MODULE_LICENSE("GPL");
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