hid-holtek-mouse.c 3.3 KB

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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. #include <linux/hid.h>
  11. #include <linux/module.h>
  12. #include <linux/usb.h>
  13. #include "hid-ids.h"
  14. /*
  15. * The report descriptor of some Holtek based gaming mice specifies an
  16. * excessively large number of consumer usages (2^15), which is more than
  17. * HID_MAX_USAGES. This prevents proper parsing of the report descriptor.
  18. *
  19. * This driver fixes the report descriptor for:
  20. * - USB ID 04d9:a067, sold as Sharkoon Drakonia and Perixx MX-2000
  21. * - USB ID 04d9:a04a, sold as Tracer Sniper TRM-503, NOVA Gaming Slider X200
  22. * and Zalman ZM-GM1
  23. * - USB ID 04d9:a081, sold as SHARKOON DarkGlider Gaming mouse
  24. * - USB ID 04d9:a072, sold as LEETGION Hellion Gaming Mouse
  25. * - USB ID 04d9:a0c2, sold as ETEKCITY Scroll T-140 Gaming Mouse
  26. */
  27. static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  28. unsigned int *rsize)
  29. {
  30. struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
  31. if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
  32. /* Change usage maximum and logical maximum from 0x7fff to
  33. * 0x2fff, so they don't exceed HID_MAX_USAGES */
  34. switch (hdev->product) {
  35. case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067:
  36. case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072:
  37. case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2:
  38. if (*rsize >= 122 && rdesc[115] == 0xff && rdesc[116] == 0x7f
  39. && rdesc[120] == 0xff && rdesc[121] == 0x7f) {
  40. hid_info(hdev, "Fixing up report descriptor\n");
  41. rdesc[116] = rdesc[121] = 0x2f;
  42. }
  43. break;
  44. case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A:
  45. case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070:
  46. case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081:
  47. if (*rsize >= 113 && rdesc[106] == 0xff && rdesc[107] == 0x7f
  48. && rdesc[111] == 0xff && rdesc[112] == 0x7f) {
  49. hid_info(hdev, "Fixing up report descriptor\n");
  50. rdesc[107] = rdesc[112] = 0x2f;
  51. }
  52. break;
  53. }
  54. }
  55. return rdesc;
  56. }
  57. static int holtek_mouse_probe(struct hid_device *hdev,
  58. const struct hid_device_id *id)
  59. {
  60. int ret;
  61. if (!hid_is_usb(hdev))
  62. return -EINVAL;
  63. ret = hid_parse(hdev);
  64. if (ret) {
  65. hid_err(hdev, "hid parse failed: %d\n", ret);
  66. return ret;
  67. }
  68. ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
  69. if (ret) {
  70. hid_err(hdev, "hw start failed: %d\n", ret);
  71. return ret;
  72. }
  73. return 0;
  74. }
  75. static const struct hid_device_id holtek_mouse_devices[] = {
  76. { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
  77. USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
  78. { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
  79. USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
  80. { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
  81. USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
  82. { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
  83. USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
  84. { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
  85. USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
  86. { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
  87. USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) },
  88. { }
  89. };
  90. MODULE_DEVICE_TABLE(hid, holtek_mouse_devices);
  91. static struct hid_driver holtek_mouse_driver = {
  92. .name = "holtek_mouse",
  93. .id_table = holtek_mouse_devices,
  94. .report_fixup = holtek_mouse_report_fixup,
  95. .probe = holtek_mouse_probe,
  96. };
  97. module_hid_driver(holtek_mouse_driver);
  98. MODULE_LICENSE("GPL");