kernel/linux.git/drivers/hid/hid-elecom.c, branch v6.6.141

HID: elecom: Add support for ELECOM HUGE Plus M-HT1MRBK

2026-03-04T12:20:42+00:00

[ Upstream commit b8e5fdf0bd022cd5493a5987ef66f5a24f8352d8 ] New model in the ELECOM HUGE trackball line that has 8 buttons but the report descriptor specifies only 5. The HUGE Plus supports connecting via Bluetooth, 2.4GHz wireless USB dongle, and directly via a USB-C cable. Each connection type reports a different device id, 01AA for cable, 01AB for USB dongle, and 01AC for Bluetooth. This patch adds these device IDs and applies the fixups similar to the other ELECOM devices to get all 8 buttons working for all 3 connection types. For reference, the usbhid-dump output: 001:013:001:DESCRIPTOR 1769085639.598405 05 01 09 02 A1 01 85 01 09 01 A1 00 05 09 19 01 29 05 15 00 25 01 75 01 95 05 81 02 75 03 95 01 81 01 05 01 09 30 09 31 16 01 80 26 FF 7F 75 10 95 02 81 06 09 38 15 81 25 7F 75 08 95 01 81 06 05 0C 0A 38 02 15 81 25 7F 75 08 95 01 81 06 C0 C0 05 0C 09 01 A1 01 85 02 15 01 26 8C 02 19 01 2A 8C 02 75 10 95 01 81 00 C0 05 01 09 80 A1 01 85 03 09 82 09 81 09 83 15 00 25 01 19 01 29 03 75 01 95 03 81 02 95 05 81 01 C0 06 01 FF 09 00 A1 01 85 08 09 00 15 00 26 FF 00 75 08 95 07 81 02 C0 06 02 FF 09 02 A1 01 85 06 09 02 15 00 26 FF 00 75 08 95 07 B1 02 C0 Signed-off-by: David Phillips Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin

HID: elecom: Add support for ELECOM M-XT3URBK (018F)

2026-01-11T14:21:10+00:00

[ Upstream commit cdcbb8e8d10f656642380ee13516290437b52b36 ] The ELECOM M-XT3URBK trackball has an additional device ID (0x018F), which shares the same report descriptor as the existing device (0x00FB). However, the driver does not currently recognize this new ID, resulting in only five buttons being functional. This patch adds the new device ID so that all six buttons work properly. Signed-off-by: Naoki Ueki Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin

HID: elecom: add support for TrackBall 056E:011C

2023-01-20T17:44:10+00:00

Make function buttons on ELECOM M-HT1DRBK trackball mouse work. This model has two devices with different device IDs (010D and 011C). Both of them misreports the number of buttons as 5 in the report descriptor, even though they have 8 buttons. hid-elecom overwrites the report to fix them, but supports only on 010D and does not work on 011C. This patch fixes 011C in the similar way but with specialized position parameters. In fact, it is sufficient to rewrite only 17th byte (05 -> 08). However I followed the existing way. Signed-off-by: Takahiro Fujii Signed-off-by: Jiri Kosina

HID: elecom: drop stray comment

2020-11-25T16:40:23+00:00

Drop spurious leftover comment. Signed-off-by: Jiri Kosina

HID: elecom: add support for EX-G M-XGL20DLBK wireless mouse

2020-11-25T13:27:45+00:00

Enables three buttons (Fn1, Fn2, and Fn3) on the ELECOM M-XGL20DLBK wireless mouse. While this mouse is EX-G brand, report descriptor is a bit different from EX-G trackball mouse. To enable extra buttons, report should be rewritten in a similar way to trackballs, but with different position parameters. Signed-off-by: YOSHIOKA Takuma Signed-off-by: Jiri Kosina

HID: elecom: rewrite report based on model specific parameters

2020-11-25T13:27:45+00:00

The report descriptor for EX-G wireless mouse (M-XGL20DLBK) is a bit different from that for trackball mice such as DEFT. For such mouse, the current `mouse_button_fixup` cannot be used as is, because it uses hard-coded indices for a report descriptor. Add parameters to `mouse_button_fixup` function, in order to support fixing report descriptors for more models. Signed-off-by: YOSHIOKA Takuma Signed-off-by: Jiri Kosina

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman

HID: elecom: add support for EX-G M-XT4DRBK trackball

2018-03-06T14:15:47+00:00

This patch enables the 6th button on the ELECOM EX-G M-XT4DRBK trackball mouse. This is a left handed EX-G variant which only comes in a wireless (D) model. It has a total of 6 buttons but one of these is not available because of how the HID descriptor is configured. Signed-off-by: Tomasz Kramkowski Signed-off-by: Jiri Kosina

HID: elecom: refer to trackballs by model name instead of series

2018-03-06T14:15:47+00:00

This patch changes all references to ELECOM trackballs using their series name to refer to them by their model name. ELECOM provides multiple series of mice such as EX-G, HUGE, and DEFT. Although it has not caused conflicts in the driver, there can be more than one iteration of mice in each series. For example, there are 7 variants of EX-G trackballs but only three (M-XT3URBK, M-XT3DRBK, and M-XT4DRBK) need a driver to work correctly. There are also 4 DEFT series trackballs but two of them have the same VID:PID as the other two. I picked the earlier model for the naming of the PID macros. Signed-off-by: Tomasz Kramkowski Signed-off-by: Jiri Kosina

HID: elecom: rewrite report fixup for EX-G and future mice

2018-01-23T14:39:54+00:00

This patch rewrites the mouse report fixup used for the DEFT and HUGE elecom trackballs in order to make it generic enough to fix other elecom mice with similar issues. This patch also uses this new report fixup function to fix the Elecom EX-G trackball which has 6 physical buttons and a similar issue to the other two mice. Elecom's track record has so far shown that they like to re-use the same report descriptor for multiple different mice regardless of the number of buttons the mouse has. This means that the missing buttons on multiple mice can be fixed in one function without introducing phantom buttons which would in turn cause the number of mouse buttons to be misreported to userspace. This patch drops the very verbose report descriptor "diff" comment for a more abridged yet hopefully just as informative generic version. Signed-off-by: Tomasz Kramkowski Signed-off-by: Jiri Kosina