From mboxrd@z Thu Jan  1 00:00:00 1970
From: Russell King - ARM Linux <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
Subject: Re: [PATCH v3] Input: keyboard - add device tree bindings for
 simple key matrixes
Date: Tue, 3 Jan 2012 17:06:15 +0000
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To: Dmitry Torokhov <dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>, U-Boot Mailing List <u-boot-0aAXYlwwYIKGBzrmiIFOJg@public.gmane.org>, riyer-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
List-Id: devicetree@vger.kernel.org

On Tue, Jan 03, 2012 at 08:44:32AM -0800, Dmitry Torokhov wrote:
> On Tue, Jan 03, 2012 at 04:29:30PM +0000, Russell King - ARM Linux wrote:
> > On Tue, Jan 03, 2012 at 08:22:21AM -0800, Simon Glass wrote:
> > > Can the Linux key codes fit in 8 bits?
> > 
> > That depends on your point of view.
> > 
> > If you hack on X, then the answer is yes and you ignore the squeels of
> > your users when certain key presses get misinterpreted.  (The Psion LX
> > platform, otherwise known as the Netbook Pro, suffered with this problem.)
> > 
> > If you are a kernel hacker, the answer is no, because key codes currently
> > go all the way to 0x300.
> 
> For bootloader environment 0-255 range is probably sufficient though,
> the upper keys are somewhat recent additions to the maps...

I assume you deem 'recent' to mean 8 years ago - they've been there since
at least 2.6.9, which is where the problem I refer to above was first
noticed.