// SPDX-License-Identifier: GPL-2.0-or-later /* * USB HID driver for Glorious PC Gaming Race * Glorious Model O, O- and D mice. * * Copyright (c) 2020 Samuel Čavoj <sammko@sammserver.com> */ /* */ #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" MODULE_AUTHOR("Samuel Čavoj <sammko@sammserver.com>"); MODULE_DESCRIPTION("HID driver for Glorious PC Gaming Race mice"); /* * Glorious Model O and O- specify the const flag in the consumer input * report descriptor, which leads to inputs being ignored. Fix this * by patching the descriptor. * * Glorious Model I incorrectly specifes the Usage Minimum for its * keyboard HID report, causing keycodes to be misinterpreted. * Fix this by setting Usage Minimum to 0 in that report. */ static const __u8 *glorious_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { if (*rsize == 213 && rdesc[84] == 129 && rdesc[112] == 129 && rdesc[140] == 129 && rdesc[85] == 3 && rdesc[113] == 3 && rdesc[141] == 3) { hid_info(hdev, "patching Glorious Model O consumer control report descriptor\n"); rdesc[85] = rdesc[113] = rdesc[141] = \ HID_MAIN_ITEM_VARIABLE | HID_MAIN_ITEM_RELATIVE; } if (*rsize == 156 && rdesc[41] == 1) { hid_info(hdev, "patching Glorious Model I keyboard report descriptor\n"); rdesc[41] = 0; } return rdesc; } static void glorious_update_name(struct hid_device *hdev) { const char *model = "Device"; switch (hdev->product) { case USB_DEVICE_ID_GLORIOUS_MODEL_O: model = "Model O"; break; case USB_DEVICE_ID_GLORIOUS_MODEL_D: model = "Model D"; break; case USB_DEVICE_ID_GLORIOUS_MODEL_I: model = "Model I"; break; } snprintf(hdev->name, sizeof(hdev->name), "%s %s", "Glorious", model); } static int glorious_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; hdev->quirks |= HID_QUIRK_INPUT_PER_APP; ret = hid_parse(hdev); if (ret) return ret; glorious_update_name(hdev); return hid_hw_start(hdev, HID_CONNECT_DEFAULT); } static const struct hid_device_id glorious_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_SINOWEALTH, USB_DEVICE_ID_GLORIOUS_MODEL_O) }, { HID_USB_DEVICE(USB_VENDOR_ID_SINOWEALTH, USB_DEVICE_ID_GLORIOUS_MODEL_D) }, { HID_USB_DEVICE(USB_VENDOR_ID_LAVIEW, USB_DEVICE_ID_GLORIOUS_MODEL_I) }, { } }; MODULE_DEVICE_TABLE(hid, glorious_devices); static struct hid_driver glorious_driver = { .name = "glorious", .id_table = glorious_devices, .probe = glorious_probe, .report_fixup = glorious_report_fixup }; module_hid_driver(glorious_driver); MODULE_LICENSE("GPL");