linux-kernel - Re: [PATCH 1/4] Input: Add trackpoint doubletap and system debug info keycodes

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Message-ID: <ZhR-WPx7dgKxziMb@google.com>
Date: Mon, 8 Apr 2024 16:31:36 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Mark Pearson <mpearson-lenovo@...ebb.ca>
Cc: hdegoede@...hat.com, ilpo.jarvinen@...ux.intel.com, hmh@....eng.br,
	ibm-acpi-devel@...ts.sourceforge.net,
	platform-driver-x86@...r.kernel.org, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org, njoshi1@...ovo.com,
	vsankar@...ovo.com, peter.hutterer@...hat.com
Subject: Re: [PATCH 1/4] Input: Add trackpoint doubletap and system debug
 info keycodes

Hi Mark,

On Sun, Mar 24, 2024 at 05:07:58PM -0400, Mark Pearson wrote:
> Add support for new input events on Lenovo laptops that need exporting to
> user space.
> 
> Lenovo trackpoints are adding the ability to generate a doubletap event.
> Add a new keycode to allow this to be used by userspace.

What is the intended meaning of this keycode? How does it differ from
the driver sending BTN_LEFT press/release twice?
> 
> Lenovo support is using FN+N with Windows to collect needed details for
> support cases. Add a keycode so that we'll be able to provide similar
> support on Linux.

Is there a userspace consumer for this?

Thanks.

-- 
Dmitry