| /* |
| * HID driver for ELECOM devices. |
| * Copyright (c) 2010 Richard Nauber <Richard.Nauber@gmail.com> |
| * Copyright (c) 2016 Yuxuan Shui <yshuiv7@gmail.com> |
| * Copyright (c) 2017 Diego Elio Pettenò <flameeyes@flameeyes.eu> |
| * Copyright (c) 2017 Alex Manoussakis <amanou@gnu.org> |
| */ |
| |
| /* |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| * any later version. |
| */ |
| |
| #include <linux/device.h> |
| #include <linux/hid.h> |
| #include <linux/module.h> |
| |
| #include "hid-ids.h" |
| |
| static __u8 *elecom_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
| unsigned int *rsize) |
| { |
| switch (hdev->product) { |
| case USB_DEVICE_ID_ELECOM_BM084: |
| /* The BM084 Bluetooth mouse includes a non-existing horizontal |
| * wheel in the HID descriptor. */ |
| if (*rsize >= 48 && rdesc[46] == 0x05 && rdesc[47] == 0x0c) { |
| hid_info(hdev, "Fixing up Elecom BM084 report descriptor\n"); |
| rdesc[47] = 0x00; |
| } |
| break; |
| case USB_DEVICE_ID_ELECOM_DEFT_WIRED: |
| case USB_DEVICE_ID_ELECOM_DEFT_WIRELESS: |
| case USB_DEVICE_ID_ELECOM_HUGE_WIRED: |
| case USB_DEVICE_ID_ELECOM_HUGE_WIRELESS: |
| /* The DEFT/HUGE trackball has eight buttons, but its descriptor |
| * only reports five, disabling the three Fn buttons on the top |
| * of the mouse. |
| * |
| * Apply the following diff to the descriptor: |
| * |
| * Collection (Physical), Collection (Physical), |
| * Report ID (1), Report ID (1), |
| * Report Count (5), -> Report Count (8), |
| * Report Size (1), Report Size (1), |
| * Usage Page (Button), Usage Page (Button), |
| * Usage Minimum (01h), Usage Minimum (01h), |
| * Usage Maximum (05h), -> Usage Maximum (08h), |
| * Logical Minimum (0), Logical Minimum (0), |
| * Logical Maximum (1), Logical Maximum (1), |
| * Input (Variable), Input (Variable), |
| * Report Count (1), -> Report Count (0), |
| * Report Size (3), Report Size (3), |
| * Input (Constant), Input (Constant), |
| * Report Size (16), Report Size (16), |
| * Report Count (2), Report Count (2), |
| * Usage Page (Desktop), Usage Page (Desktop), |
| * Usage (X), Usage (X), |
| * Usage (Y), Usage (Y), |
| * Logical Minimum (-32768), Logical Minimum (-32768), |
| * Logical Maximum (32767), Logical Maximum (32767), |
| * Input (Variable, Relative), Input (Variable, Relative), |
| * End Collection, End Collection, |
| */ |
| if (*rsize == 213 && rdesc[13] == 5 && rdesc[21] == 5) { |
| hid_info(hdev, "Fixing up Elecom DEFT/HUGE Fn buttons\n"); |
| rdesc[13] = 8; /* Button/Variable Report Count */ |
| rdesc[21] = 8; /* Button/Variable Usage Maximum */ |
| rdesc[29] = 0; /* Button/Constant Report Count */ |
| } |
| break; |
| } |
| return rdesc; |
| } |
| |
| static const struct hid_device_id elecom_devices[] = { |
| { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) }, |
| { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_DEFT_WIRED) }, |
| { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_DEFT_WIRELESS) }, |
| { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_HUGE_WIRED) }, |
| { HID_USB_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_HUGE_WIRELESS) }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(hid, elecom_devices); |
| |
| static struct hid_driver elecom_driver = { |
| .name = "elecom", |
| .id_table = elecom_devices, |
| .report_fixup = elecom_report_fixup |
| }; |
| module_hid_driver(elecom_driver); |
| |
| MODULE_LICENSE("GPL"); |
