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