1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * USB HID driver for Glorious PC Gaming Race
4*4882a593Smuzhiyun * Glorious Model O, O- and D mice.
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Copyright (c) 2020 Samuel Čavoj <sammko@sammserver.com>
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun /*
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/hid.h>
13*4882a593Smuzhiyun #include <linux/module.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include "hid-ids.h"
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun MODULE_AUTHOR("Samuel Čavoj <sammko@sammserver.com>");
18*4882a593Smuzhiyun MODULE_DESCRIPTION("HID driver for Glorious PC Gaming Race mice");
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun /*
21*4882a593Smuzhiyun * Glorious Model O and O- specify the const flag in the consumer input
22*4882a593Smuzhiyun * report descriptor, which leads to inputs being ignored. Fix this
23*4882a593Smuzhiyun * by patching the descriptor.
24*4882a593Smuzhiyun */
glorious_report_fixup(struct hid_device * hdev,__u8 * rdesc,unsigned int * rsize)25*4882a593Smuzhiyun static __u8 *glorious_report_fixup(struct hid_device *hdev, __u8 *rdesc,
26*4882a593Smuzhiyun unsigned int *rsize)
27*4882a593Smuzhiyun {
28*4882a593Smuzhiyun if (*rsize == 213 &&
29*4882a593Smuzhiyun rdesc[84] == 129 && rdesc[112] == 129 && rdesc[140] == 129 &&
30*4882a593Smuzhiyun rdesc[85] == 3 && rdesc[113] == 3 && rdesc[141] == 3) {
31*4882a593Smuzhiyun hid_info(hdev, "patching Glorious Model O consumer control report descriptor\n");
32*4882a593Smuzhiyun rdesc[85] = rdesc[113] = rdesc[141] = \
33*4882a593Smuzhiyun HID_MAIN_ITEM_VARIABLE | HID_MAIN_ITEM_RELATIVE;
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun return rdesc;
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
glorious_update_name(struct hid_device * hdev)38*4882a593Smuzhiyun static void glorious_update_name(struct hid_device *hdev)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun const char *model = "Device";
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun switch (hdev->product) {
43*4882a593Smuzhiyun case USB_DEVICE_ID_GLORIOUS_MODEL_O:
44*4882a593Smuzhiyun model = "Model O"; break;
45*4882a593Smuzhiyun case USB_DEVICE_ID_GLORIOUS_MODEL_D:
46*4882a593Smuzhiyun model = "Model D"; break;
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun snprintf(hdev->name, sizeof(hdev->name), "%s %s", "Glorious", model);
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun
glorious_probe(struct hid_device * hdev,const struct hid_device_id * id)52*4882a593Smuzhiyun static int glorious_probe(struct hid_device *hdev,
53*4882a593Smuzhiyun const struct hid_device_id *id)
54*4882a593Smuzhiyun {
55*4882a593Smuzhiyun int ret;
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun ret = hid_parse(hdev);
60*4882a593Smuzhiyun if (ret)
61*4882a593Smuzhiyun return ret;
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun glorious_update_name(hdev);
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
66*4882a593Smuzhiyun }
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun static const struct hid_device_id glorious_devices[] = {
69*4882a593Smuzhiyun { HID_USB_DEVICE(USB_VENDOR_ID_GLORIOUS,
70*4882a593Smuzhiyun USB_DEVICE_ID_GLORIOUS_MODEL_O) },
71*4882a593Smuzhiyun { HID_USB_DEVICE(USB_VENDOR_ID_GLORIOUS,
72*4882a593Smuzhiyun USB_DEVICE_ID_GLORIOUS_MODEL_D) },
73*4882a593Smuzhiyun { }
74*4882a593Smuzhiyun };
75*4882a593Smuzhiyun MODULE_DEVICE_TABLE(hid, glorious_devices);
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun static struct hid_driver glorious_driver = {
78*4882a593Smuzhiyun .name = "glorious",
79*4882a593Smuzhiyun .id_table = glorious_devices,
80*4882a593Smuzhiyun .probe = glorious_probe,
81*4882a593Smuzhiyun .report_fixup = glorious_report_fixup
82*4882a593Smuzhiyun };
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun module_hid_driver(glorious_driver);
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun MODULE_LICENSE("GPL");
87