From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej2-f12.google.com (mail-ej2-f12.google.com [74.125.228.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7307328033B for ; Sat, 26 Sep 2026 12:12:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.228.140 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790424728; cv=none; b=nBzQ2TGcOqvC1wylu6s/KQ4y5nR0+pfpioJ8QvmVsnwty4Qx/Bx6jorIfIelPD+p8G7MHrdPStEQrQhnDCZqtjRlmZqWUUU7TvjlR90a2BcfjL128PvPS5vha2NT1gT9CQClal9KIpemQY73nqh+ojZ6PX+FsHm0L00Jl1PD83o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790424728; c=relaxed/simple; bh=4b/AkjhNna1R9Uyl4AgeyjsThwIUEKChAEpbm7uJFzY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=J87tqX6ljeaxj+oa7X55rW2pDQ2k0BQG8d74PtLgrqc1DIVpFxTvCXAgARnfLepr4lImseX+noHygvq8zdeY9TZTD6cRQeBzM2fJ2ZNg0FzYQAs+iQEX8mK2HFs0fSAtVPIzfElbTnqMjwWw13cXpxud1XHlpBECyrc8PgR2rcQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=dKEne2CF; arc=none smtp.client-ip=74.125.228.140 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="dKEne2CF" Received: by mail-ej2-f12.google.com with SMTP id a640c23a62f3a-c294496989aso227333766b.3 for ; Sat, 26 Sep 2026 05:12:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1790424726; x=1791029526; darn=vger.kernel.org; h=content-type:content-transfer-encoding:mime-version:references :in-reply-to:message-id:date:subject:cc:to:from:from:to:cc:subject :date:message-id:reply-to:content-type; bh=gL6yGYanOuXOFUt9EY53ACpJvwH+dAQMRzWl6hM5a5w=; b=dKEne2CF4p1WW1W4mmoZRHehjKrPszgzBhubPdal3RyK+PWBq5TUddDjvBUJu5Yudw NShk3AUKbAxrxUgRjiJr/zCpsPNECM5+n0vAEXU1ohnpPL4IBskntmgQhm0rY933T3tk pjk0wseYRZhavQPVOEyZBm0/5g6RJhTNxhtX3uwPAMyTKKcgFP+PXl1uTn8Ojvl1eUwK Ezl79Uulu3ydO9PkU0lbOOhb4s+juMMWQyq+qPkj/sw2tIgSCGsn4LoRDykO3+brQ1TK QJWJ4/haAC+EmeDDsSiCbFTh71oQb9ujOYwdkMr6YayM5+B1VeAieFebbtCSeCgorVFF NDaA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790424726; x=1791029526; h=content-type:content-transfer-encoding:mime-version:references :in-reply-to:message-id:date:subject:cc:to:from:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=gL6yGYanOuXOFUt9EY53ACpJvwH+dAQMRzWl6hM5a5w=; b=BGOrOcyKzMdLkUTPej9as5CgPzOl4Mi5ZBo312+plxNb6Vs3lr+v79j6piPgD5Wb0N zF3o9v6iwV3HjUpFVxF4bOtF1+/RUDhzZ2gWWik8Dqmm6qif2FjszshLI7IWjoPKlFaG 9+jgQHt4oDK6aYH9tNiI7eqdbLi6APa/AcDLR/0yqzD9JXlUdl3sAZPaG80/EM35kOEP 9bZaKaMdyWvx0HrqXkcKp90Akomitincu4x81cIyw39CDZvZeDSTgXiHKvvUDxHqiI2P mFc/NZtEkQE2YTX6GylRcL2V27o+zXsZnXvYpen+sGAzf9BqMGr2//77gL5s4WFr25qs Nusw== X-Forwarded-Encrypted: i=1; AKwUvByDBre/2hSrXa4LbCq1xNdIDYPvYgo0fpfQkiB3ZLRW5XEmre5uv3Zkhq+lv2x/djrI7lbohE2lZB2zRA==@vger.kernel.org X-Gm-Message-State: AFuF++kOK2nWMUEpUoncNz6ssHUi85eBoGUMcQ0tEpZGuFPzRsXKJs6e ZQ4xE685NpqKRoIMUWh+pqMVXFPfJr5oyhZ/ZpifPuVHrxrXBfGiaZre X-Gm-Gg: AYBFou3OplNY5vtaupPb3heZkWFemN7w4PzULaSTTGQ6hLIZ7MFRivVILMThfxCj0JI ongvXeNkPh5pfsi27vImNMuHtmg9UjPaqFr6XqtusGm72yn60QO/VELYsKdDC2/IMiuM8CCMDRi Uwxzdq36k2g83Nl2L40Svs323rr/wJcxAX0X7Z9CXOubzQJAGJMojTIv9D8iwGSD6ItCAZSdQj4 Ywhd6rkCleR9CErn51fevx0jJYkptDATCBrj3rFYSMNXwk+89MdoFlo+LlMFJ6a2lDSDlrq5M0A 9p3hw1nEj4o0itRx68Iwv/3ix48i6jNwSSqpRQgB4pz8v/31VMHKEcxAALiJpihiVB3TT1H1MPX Kyt1vtn1Jw3wWRM5thgdBX+fIZXxDjHEZwlMnt+HxNObPS7LveLjuJsfKfJ65RMiY3kNmCwxbwO 5DuCJSt+mrOvVFLQpHlp73JYwz5vwxwacAziVY/UqxwgNkX0ZJRiRydmA0PV7wag/avu0JaBuor 4XROkXXeSLt1HVS1abEm9UCJPIEo2fIlFOR4iLC5UQ4 X-Received: by 2002:a17:906:7946:b0:c26:1648:a06b with SMTP id a640c23a62f3a-c2ac2511a13mr683690866b.38.1790424725612; Sat, 26 Sep 2026 05:12:05 -0700 (PDT) Received: from fedora.localnet (81-224-151-184-no600.tbcn.telia.com. [81.224.151.184]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c2dbd380646sm49097966b.68.2026.09.26.05.12.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 26 Sep 2026 05:12:03 -0700 (PDT) From: Erik =?UTF-8?B?SMOla2Fuc3Nvbg==?= To: Oleksandr Natalenko Cc: Benjamin Tissoires , Jiri Kosina , Filipe =?UTF-8?B?TGHDrW5z?= , Bastien Nocera , Rafael Passos , =?UTF-8?B?R3LDqWdvaXJl?= Stein , Alexey Zagorodnikov , Roman Stingler , Lovekesh Solanki , =?UTF-8?B?S2F0ZcWZaW5hIE1lZHbEm2RvdsOh?= , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] HID: logitech-hidpp: fix Bolt hi-res wheel handling Date: Sat, 26 Sep 2026 14:12:01 +0200 Message-ID: In-Reply-To: References: <20260922-feature-bolt-fix-v1-0-63b0fa8da0d3@gmail.com> <2UD2rmaWS9W0wgq6AdNLxw@gmail.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Hi! On Saturday, 26 September 2026 13:39:18 Central European Summer Time Oleksandr Natalenko wrote: > > This is touching: > > 0000 00 23 e7 90 c5 8d ff ff 43 01 83 03 01 00 2d 00 .#......C.....-. > 0010 76 ae b7 6a 00 00 00 00 01 1a 0e 00 00 00 00 00 v..j............ > 0020 14 00 00 00 14 00 00 00 00 00 00 00 00 00 00 00 ................ > 0030 01 00 00 00 00 00 00 00 04 02 00 00 00 00 00 00 ................ > 0040 11 02 13 00 00 00 00 00 00 02 00 00 00 00 00 00 ................ > 0050 00 00 00 00 .... > > This is untouching: > > 0000 00 23 e7 90 c5 8d ff ff 43 01 83 03 01 00 2d 00 .#......C.....-. > 0010 79 ae b7 6a 00 00 00 00 5e c1 05 00 00 00 00 00 y..j....^....... > 0020 14 00 00 00 14 00 00 00 00 00 00 00 00 00 00 00 ................ > 0030 01 00 00 00 00 00 00 00 04 02 00 00 00 00 00 00 ................ > 0040 11 02 13 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > 0050 00 00 00 00 Great, thanks! This confirms that touch, but not tap or proximity, comes in on HID++ but not at all on native HID. I don't think evdev has a very good output to map it to though, so maybe I'll leave it unmapped for now. BTN_TOUCH combined with some appropriate BTN_TOOL_* for denoting thumbwheel would be a semantic fit, but I think there's a risk that userspace starts to interpret the device as a touchscreen then, if I understand the input event codes documentation correctly: https://github.com/torvalds/linux/blob/master/Documentation/input/event-codes.rst By the way, when Thumbwheel Divertion is on, do you get the regular thumbwheel scroll events on HID++ too? That would be the 81 (native HID) or 83 (HID++) on byte 11 in the hex output :) Cheers Erik