95 lines
4.1 KiB
C
95 lines
4.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* HID driver for Xiaomi Mi Dual Mode Wireless Mouse Silent Edition
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*
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* Copyright (c) 2021 Ilya Skriblovsky
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/hid.h>
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#include "hid-ids.h"
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/* Fixed Mi Silent Mouse report descriptor */
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/* Button's Usage Maximum changed from 3 to 5 to make side buttons work */
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#define MI_SILENT_MOUSE_ORIG_RDESC_LENGTH 87
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static __u8 mi_silent_mouse_rdesc_fixed[] = {
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0x05, 0x01, /* Usage Page (Desktop), */
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0x09, 0x02, /* Usage (Mouse), */
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0xA1, 0x01, /* Collection (Application), */
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0x85, 0x03, /* Report ID (3), */
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0x09, 0x01, /* Usage (Pointer), */
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0xA1, 0x00, /* Collection (Physical), */
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0x05, 0x09, /* Usage Page (Button), */
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0x19, 0x01, /* Usage Minimum (01h), */
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0x29, 0x05, /* X */ /* Usage Maximum (05h), */
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0x15, 0x00, /* Logical Minimum (0), */
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0x25, 0x01, /* Logical Maximum (1), */
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0x75, 0x01, /* Report Size (1), */
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0x95, 0x05, /* Report Count (5), */
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0x81, 0x02, /* Input (Variable), */
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0x75, 0x03, /* Report Size (3), */
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0x95, 0x01, /* Report Count (1), */
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0x81, 0x01, /* Input (Constant), */
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0x05, 0x01, /* Usage Page (Desktop), */
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0x09, 0x30, /* Usage (X), */
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0x09, 0x31, /* Usage (Y), */
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0x15, 0x81, /* Logical Minimum (-127), */
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0x25, 0x7F, /* Logical Maximum (127), */
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0x75, 0x08, /* Report Size (8), */
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0x95, 0x02, /* Report Count (2), */
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0x81, 0x06, /* Input (Variable, Relative), */
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0x09, 0x38, /* Usage (Wheel), */
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0x15, 0x81, /* Logical Minimum (-127), */
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0x25, 0x7F, /* Logical Maximum (127), */
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0x75, 0x08, /* Report Size (8), */
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0x95, 0x01, /* Report Count (1), */
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0x81, 0x06, /* Input (Variable, Relative), */
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0xC0, /* End Collection, */
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0xC0, /* End Collection, */
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0x06, 0x01, 0xFF, /* Usage Page (FF01h), */
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0x09, 0x01, /* Usage (01h), */
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0xA1, 0x01, /* Collection (Application), */
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0x85, 0x05, /* Report ID (5), */
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0x09, 0x05, /* Usage (05h), */
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0x15, 0x00, /* Logical Minimum (0), */
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0x26, 0xFF, 0x00, /* Logical Maximum (255), */
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0x75, 0x08, /* Report Size (8), */
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0x95, 0x04, /* Report Count (4), */
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0xB1, 0x02, /* Feature (Variable), */
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0xC0 /* End Collection */
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};
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static __u8 *xiaomi_report_fixup(struct hid_device *hdev, __u8 *rdesc,
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unsigned int *rsize)
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{
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switch (hdev->product) {
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case USB_DEVICE_ID_MI_SILENT_MOUSE:
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if (*rsize == MI_SILENT_MOUSE_ORIG_RDESC_LENGTH) {
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hid_info(hdev, "fixing up Mi Silent Mouse report descriptor\n");
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rdesc = mi_silent_mouse_rdesc_fixed;
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*rsize = sizeof(mi_silent_mouse_rdesc_fixed);
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}
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break;
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}
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return rdesc;
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}
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static const struct hid_device_id xiaomi_devices[] = {
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{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_XIAOMI, USB_DEVICE_ID_MI_SILENT_MOUSE) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, xiaomi_devices);
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static struct hid_driver xiaomi_driver = {
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.name = "xiaomi",
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.id_table = xiaomi_devices,
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.report_fixup = xiaomi_report_fixup,
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};
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module_hid_driver(xiaomi_driver);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Ilya Skriblovsky <IlyaSkriblovsky@gmail.com>");
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MODULE_DESCRIPTION("Fixing side buttons of Xiaomi Mi Silent Mouse");
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