From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: Re: serial port discovery on a motion computing tablet Date: Wed, 14 Mar 2007 13:43:23 +0000 Message-ID: <20070314134323.GC1467@srcf.ucam.org> References: <45F7688B.8000101@elevating.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from cavan.codon.org.uk ([217.147.92.49]:55529 "EHLO vavatch.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933904AbXCNNnr (ORCPT ); Wed, 14 Mar 2007 09:43:47 -0400 Content-Disposition: inline In-Reply-To: <45F7688B.8000101@elevating.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Bret Hughes Cc: linux-acpi@vger.kernel.org On Tue, Mar 13, 2007 at 10:14:19PM -0500, Bret Hughes wrote: > I am evaluating a motion computing LE1600 tablet for possible use with > linux using Centos 4.4 since that is what we use for several servers and > had the installation media handy. This device uses a TouchKO serial > touchscreen that has been used by linux in the past but the issue I am > facing is that the bios does not expose the serial ports. I spoke with > an engineer at TouchKO familiar with the LE1600 project an he told me I > would have to access the serial port via acpi. Hmm says I, I guess I > have some reading to do. DO after a day or so of trying to get up to > speed, I feel I can ask a fairly decent question or two. It sounds like it ought to be exposed via ACPIPNP. If you do cat /sys/bus/pnp/devices/*/id, do any of them look plausibly linked to the tablet device? If so, add the id to drivers/serial/8250_pnp.c, build it, see if that binds and gives you a serial port and if so send a patch. -- Matthew Garrett | mjg59@srcf.ucam.org