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a5e913c25b
The Glorious Model I mouse has a buggy HID report descriptor for its keyboard endpoint (used for programmable buttons). For report ID 2, there is a mismatch between Logical Minimum and Usage Minimum in the array that reports keycodes. The offending portion of the descriptor: (from hid-decode) 0x95, 0x05, // Report Count (5) 30 0x75, 0x08, // Report Size (8) 32 0x15, 0x00, // Logical Minimum (0) 34 0x25, 0x65, // Logical Maximum (101) 36 0x05, 0x07, // Usage Page (Keyboard) 38 0x19, 0x01, // Usage Minimum (1) 40 0x29, 0x65, // Usage Maximum (101) 42 0x81, 0x00, // Input (Data,Arr,Abs) 44 This bug shifts all programmed keycodes up by 1. Importantly, this causes "empty" array indexes of 0x00 to be interpreted as 0x01, ErrorRollOver. The presence of ErrorRollOver causes the system to ignore all keypresses from the endpoint and breaks the ability to use the programmable buttons. Setting byte 41 to 0x00 fixes this, and causes keycodes to be interpreted correctly. Also, USB_VENDOR_ID_GLORIOUS is changed to USB_VENDOR_ID_SINOWEALTH, and a new ID for Laview Technology is added. Glorious seems to be white-labeling controller boards or mice from these vendors. There isn't a single canonical vendor ID for Glorious products. Signed-off-by: Brett Raye <braye@fastmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
// 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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* Glorious Model I incorrectly specifes the Usage Minimum for its
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* keyboard HID report, causing keycodes to be misinterpreted.
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* Fix this by setting Usage Minimum to 0 in that report.
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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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if (*rsize == 156 && rdesc[41] == 1) {
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hid_info(hdev, "patching Glorious Model I keyboard report descriptor\n");
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rdesc[41] = 0;
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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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case USB_DEVICE_ID_GLORIOUS_MODEL_I:
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model = "Model I"; 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_SINOWEALTH,
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USB_DEVICE_ID_GLORIOUS_MODEL_O) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_SINOWEALTH,
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USB_DEVICE_ID_GLORIOUS_MODEL_D) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_LAVIEW,
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USB_DEVICE_ID_GLORIOUS_MODEL_I) },
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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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