linux-kernel - Re: [PATCH resend 3/6] toshiba_acpi: Add support for Keyboard functions mode

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Date:	Mon, 9 Feb 2015 20:08:09 -0800
From:	Darren Hart <dvhart@...radead.org>
To:	Azael Avalos <coproscefalo@...il.com>
Cc:	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH resend 3/6] toshiba_acpi: Add support for Keyboard
 functions mode

On Mon, Feb 09, 2015 at 08:34:51PM -0700, Azael Avalos wrote:
> Recent Toshiba laptops that come with the new keyboard layout have
> the Special Functions (hotkeys) enabled by default, which, in order to
> access the F{1-12} keys, you need to press the FN-F{1-12} key to
> access such key.
> 
> This patch adds support to toggle the Keyboard Functions operation
> mode by creating the sysfs entry "kbd_functions_keys", accepting only
> two parameters, 0 to set the "Normal Operation" mode and 1 to set the
> "Special Functions" mode, however, everytime the mode is toggled, a
> restart is needed.

Erm... that's kinda horrible :-/

A couple of questions then.

1) Does the system BIOS offer a way to select one mode or the other? If so, no
point in adding it here if a reboot is required.

2) Where Toshiba supports this (Windows?) is a reboot required?

Rather than having to reboot, would a userspace mapping possibly be preferable?
Could be done without a reboot.

Finally, if we keep this, we need to print something to the system log
indicating success - and that a reboot is required to take effect.

-- 
Darren Hart
Intel Open Source Technology Center
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