From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Brownell <david-b@pacbell.net>
Subject: Re: [PATCH] Generic, platform independent matrix keyboard support
Date: Tue, 9 Oct 2007 19:05:39 -0700
Message-ID: <200710091905.39882.david-b@pacbell.net>
References: <200709021228.58354.ppisa4lists@pikron.com> <d120d5000710090922t94cb098v8cf923b2cecac63b@mail.gmail.com> <200710100332.35807.ppisa4lists@pikron.com>
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Cc: Pavel Pisa <ppisa4lists@pikron.com>, linux-input <linux-input@atrey.karlin.mff.cuni.cz>, Sascha Hauer <s.hauer@pengutronix.de>, Dmitry Torokhov <dmitry.torokhov@gmail.com>, Russell King - ARM Linux <linux@arm.linux.org.uk>
List-Id: linux-input@vger.kernel.org

On Tuesday 09 October 2007, Pavel Pisa wrote:
> On the other hand I cannot imagine electronic designed wanting
> so many wires. Reduction of the wires counts is why matrix keyboards
> are used. The 32 bits limitation then means that maximal supported
> keyboard can be 32x32 key => 1024 keys, that is quite imposing.

Yes:  http://weblog.sinteur.com/?p=20412  :)