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// 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.
*/
static __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;
}
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;
}
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_GLORIOUS,
USB_DEVICE_ID_GLORIOUS_MODEL_O) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GLORIOUS,
USB_DEVICE_ID_GLORIOUS_MODEL_D) },
{ }
};
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");
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