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Message-ID: <e9526860-b77e-8cc0-7421-91fe5370918d@gmail.com>
Date: Thu, 15 Sep 2022 10:23:13 -0400
From: "Peter F. Patel-Schneider" <pfpschneider@...il.com>
To: Bastien Nocera <hadess@...ess.net>, linux-input@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Jiri Kosina <jikos@...nel.org>,
Benjamin Tissoires <benjamin.tissoires@...hat.com>,
Filipe Laíns <lains@...eup.net>,
Nestor Lopez Casado <nlopezcasad@...itech.com>
Subject: Re: [PATCH v1] HID: logitech-hidpp: Detect hi-res scrolling support
On 9/14/22 11:41, Bastien Nocera wrote:
> On Wed, 2022-09-14 at 15:21 +0200, Bastien Nocera wrote:
>> Rather than relying on a never-ending stream of patches for quirks.
>>
>> This change will detect whether HID++ 1.0 hi-res scroll, HID++ 2.0
>> hi-res scroll or HID++ 2.0 hi-res scroll wheel is supported, and
>> enable
>> the feature without the need for quirks.
>>
>> Tested on a Logitech M705 mouse that was unsupported before this
>> change.
>>
>> [ 9.365324] logitech-hidpp-device 0003:046D:406D.0006:
>> input,hidraw3: USB HID v1.11 Mouse [Logitech M705] on usb-
>> 0000:00:14.0-4/input2:3
>> [ 57.472434] logitech-hidpp-device 0003:046D:406D.0006: HID++ 4.5
>> device connected.
>> [ 57.616429] logitech-hidpp-device 0003:046D:406D.0006: Detected
>> HID++ 2.0 hi-res scroll wheel
>> [ 57.712424] logitech-hidpp-device 0003:046D:406D.0006: wheel
>> multiplier = 8
>>
>> Link: https://bugzilla.kernel.org/show_bug.cgi?id=216480
>> Signed-off-by: Bastien Nocera <hadess@...ess.net>
> For anyone on a recent version of Fedora that wants to test it, those
> packages should work:
> https://koji.fedoraproject.org/koji/taskinfo?taskID=92008550
>
> Cheers
Using this kernel I tested several Logitech mice - an MX Master 3, which
already supported hi-res scrolling in Linux; an M310 and an M185, which have
features but no feature for hi-res scrolling; and an old-style M510, which
does not have features. I used evtest to show the events that were
generated. For these mice the patch does not produce any change in events
generated, as expected, both REL_WHEEL and REL_WHEEL_HI_RES events.
Peter F. Patel-Schneider
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