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77a36a3a SČ |
1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* | |
3 | * USB HID driver for Glorious PC Gaming Race | |
4 | * Glorious Model O, O- and D mice. | |
5 | * | |
6 | * Copyright (c) 2020 Samuel Čavoj <sammko@sammserver.com> | |
7 | */ | |
8 | ||
9 | /* | |
10 | */ | |
11 | ||
12 | #include <linux/hid.h> | |
13 | #include <linux/module.h> | |
14 | ||
15 | #include "hid-ids.h" | |
16 | ||
17 | MODULE_AUTHOR("Samuel Čavoj <sammko@sammserver.com>"); | |
18 | MODULE_DESCRIPTION("HID driver for Glorious PC Gaming Race mice"); | |
19 | ||
20 | /* | |
21 | * Glorious Model O and O- specify the const flag in the consumer input | |
22 | * report descriptor, which leads to inputs being ignored. Fix this | |
23 | * by patching the descriptor. | |
a5e913c2 BR |
24 | * |
25 | * Glorious Model I incorrectly specifes the Usage Minimum for its | |
26 | * keyboard HID report, causing keycodes to be misinterpreted. | |
27 | * Fix this by setting Usage Minimum to 0 in that report. | |
77a36a3a SČ |
28 | */ |
29 | static __u8 *glorious_report_fixup(struct hid_device *hdev, __u8 *rdesc, | |
30 | unsigned int *rsize) | |
31 | { | |
32 | if (*rsize == 213 && | |
33 | rdesc[84] == 129 && rdesc[112] == 129 && rdesc[140] == 129 && | |
34 | rdesc[85] == 3 && rdesc[113] == 3 && rdesc[141] == 3) { | |
35 | hid_info(hdev, "patching Glorious Model O consumer control report descriptor\n"); | |
36 | rdesc[85] = rdesc[113] = rdesc[141] = \ | |
37 | HID_MAIN_ITEM_VARIABLE | HID_MAIN_ITEM_RELATIVE; | |
38 | } | |
a5e913c2 BR |
39 | if (*rsize == 156 && rdesc[41] == 1) { |
40 | hid_info(hdev, "patching Glorious Model I keyboard report descriptor\n"); | |
41 | rdesc[41] = 0; | |
42 | } | |
77a36a3a SČ |
43 | return rdesc; |
44 | } | |
45 | ||
46 | static void glorious_update_name(struct hid_device *hdev) | |
47 | { | |
48 | const char *model = "Device"; | |
49 | ||
50 | switch (hdev->product) { | |
51 | case USB_DEVICE_ID_GLORIOUS_MODEL_O: | |
52 | model = "Model O"; break; | |
53 | case USB_DEVICE_ID_GLORIOUS_MODEL_D: | |
54 | model = "Model D"; break; | |
a5e913c2 BR |
55 | case USB_DEVICE_ID_GLORIOUS_MODEL_I: |
56 | model = "Model I"; break; | |
77a36a3a SČ |
57 | } |
58 | ||
59 | snprintf(hdev->name, sizeof(hdev->name), "%s %s", "Glorious", model); | |
60 | } | |
61 | ||
62 | static int glorious_probe(struct hid_device *hdev, | |
63 | const struct hid_device_id *id) | |
64 | { | |
65 | int ret; | |
66 | ||
67 | hdev->quirks |= HID_QUIRK_INPUT_PER_APP; | |
68 | ||
69 | ret = hid_parse(hdev); | |
70 | if (ret) | |
71 | return ret; | |
72 | ||
73 | glorious_update_name(hdev); | |
74 | ||
75 | return hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
76 | } | |
77 | ||
78 | static const struct hid_device_id glorious_devices[] = { | |
a5e913c2 | 79 | { HID_USB_DEVICE(USB_VENDOR_ID_SINOWEALTH, |
77a36a3a | 80 | USB_DEVICE_ID_GLORIOUS_MODEL_O) }, |
a5e913c2 | 81 | { HID_USB_DEVICE(USB_VENDOR_ID_SINOWEALTH, |
77a36a3a | 82 | USB_DEVICE_ID_GLORIOUS_MODEL_D) }, |
a5e913c2 BR |
83 | { HID_USB_DEVICE(USB_VENDOR_ID_LAVIEW, |
84 | USB_DEVICE_ID_GLORIOUS_MODEL_I) }, | |
77a36a3a SČ |
85 | { } |
86 | }; | |
87 | MODULE_DEVICE_TABLE(hid, glorious_devices); | |
88 | ||
89 | static struct hid_driver glorious_driver = { | |
90 | .name = "glorious", | |
91 | .id_table = glorious_devices, | |
92 | .probe = glorious_probe, | |
93 | .report_fixup = glorious_report_fixup | |
94 | }; | |
95 | ||
96 | module_hid_driver(glorious_driver); | |
97 | ||
98 | MODULE_LICENSE("GPL"); |