projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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. | |
| 24 | */ | |
| 25 | static __u8 *glorious_report_fixup(struct hid_device *hdev, __u8 *rdesc, | |
| 26 | unsigned int *rsize) | |
| 27 | { | |
| 28 | if (*rsize == 213 && | |
| 29 | rdesc[84] == 129 && rdesc[112] == 129 && rdesc[140] == 129 && | |
| 30 | rdesc[85] == 3 && rdesc[113] == 3 && rdesc[141] == 3) { | |
| 31 | hid_info(hdev, "patching Glorious Model O consumer control report descriptor\n"); | |
| 32 | rdesc[85] = rdesc[113] = rdesc[141] = \ | |
| 33 | HID_MAIN_ITEM_VARIABLE | HID_MAIN_ITEM_RELATIVE; | |
| 34 | } | |
| 35 | return rdesc; | |
| 36 | } | |
| 37 | ||
| 38 | static void glorious_update_name(struct hid_device *hdev) | |
| 39 | { | |
| 40 | const char *model = "Device"; | |
| 41 | ||
| 42 | switch (hdev->product) { | |
| 43 | case USB_DEVICE_ID_GLORIOUS_MODEL_O: | |
| 44 | model = "Model O"; break; | |
| 45 | case USB_DEVICE_ID_GLORIOUS_MODEL_D: | |
| 46 | model = "Model D"; break; | |
| 47 | } | |
| 48 | ||
| 49 | snprintf(hdev->name, sizeof(hdev->name), "%s %s", "Glorious", model); | |
| 50 | } | |
| 51 | ||
| 52 | static int glorious_probe(struct hid_device *hdev, | |
| 53 | const struct hid_device_id *id) | |
| 54 | { | |
| 55 | int ret; | |
| 56 | ||
| 57 | hdev->quirks |= HID_QUIRK_INPUT_PER_APP; | |
| 58 | ||
| 59 | ret = hid_parse(hdev); | |
| 60 | if (ret) | |
| 61 | return ret; | |
| 62 | ||
| 63 | glorious_update_name(hdev); | |
| 64 | ||
| 65 | return hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
| 66 | } | |
| 67 | ||
| 68 | static const struct hid_device_id glorious_devices[] = { | |
| 69 | { HID_USB_DEVICE(USB_VENDOR_ID_GLORIOUS, | |
| 70 | USB_DEVICE_ID_GLORIOUS_MODEL_O) }, | |
| 71 | { HID_USB_DEVICE(USB_VENDOR_ID_GLORIOUS, | |
| 72 | USB_DEVICE_ID_GLORIOUS_MODEL_D) }, | |
| 73 | { } | |
| 74 | }; | |
| 75 | MODULE_DEVICE_TABLE(hid, glorious_devices); | |
| 76 | ||
| 77 | static struct hid_driver glorious_driver = { | |
| 78 | .name = "glorious", | |
| 79 | .id_table = glorious_devices, | |
| 80 | .probe = glorious_probe, | |
| 81 | .report_fixup = glorious_report_fixup | |
| 82 | }; | |
| 83 | ||
| 84 | module_hid_driver(glorious_driver); | |
| 85 | ||
| 86 | MODULE_LICENSE("GPL"); |