linux-kernel - Re: [PATCH v3 7/8] HID: logitech: Enable high-resolution scrolling on Logitech mice

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Message-ID: <CAM4jgCqAh9Pck-9i8F5tO4-Kzpu+SjH-mQnGYThadSf-3b1ikw@mail.gmail.com>
Date:   Fri, 14 Dec 2018 14:46:50 +0100
From:   Clément VUCHENER <clement.vuchener@...il.com>
To:     Peter Hutterer <peter.hutterer@...-t.net>
Cc:     linux-input <linux-input@...r.kernel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Jiri Kosina <jikos@...nel.org>,
        Harry Cutts <hcutts@...omium.org>,
        torvalds@...ux-foundation.org,
        Nestor Lopez Casado <nlopezcasad@...itech.com>,
        lkml <linux-kernel@...r.kernel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Subject: Re: [PATCH v3 7/8] HID: logitech: Enable high-resolution scrolling on
 Logitech mice

Le mer. 5 déc. 2018 à 01:44, Peter Hutterer <peter.hutterer@...-t.net> a écrit :
>
> From: Harry Cutts <hcutts@...omium.org>
>
> There are three features used by various Logitech mice for
> high-resolution scrolling: the scrolling acceleration bit in HID++ 1.0,
> and the x2120 and x2121 features in HID++ 2.0 and above. This patch
> supports all three, and uses the multiplier reported by the mouse for
> the HID++ 2.0+ features.

Hi, The G500s (and the G500 too, I think) does support the "scrolling
acceleration" bit. If I set it, I get around 8 events for each wheel
"click", this is what this driver expects, right? If I understood
correctly, I should try this patch with the
HIDPP_QUIRK_HI_RES_SCROLL_1P0 quirk set for my mouse.