Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750756AbWJQVMO (ORCPT ); Tue, 17 Oct 2006 17:12:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750747AbWJQVMO (ORCPT ); Tue, 17 Oct 2006 17:12:14 -0400 Received: from nf-out-0910.google.com ([64.233.182.185]:53509 "EHLO nf-out-0910.google.com") by vger.kernel.org with ESMTP id S1750701AbWJQVMN (ORCPT ); Tue, 17 Oct 2006 17:12:13 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=nZgBD3CxZZ0w3HhcXgkp0nheDvQ0+qjJs/s5ZAUdGYro2/2GEi8Ywu858XT+NzcB0KkWUl2tFmsRzjSu+IQRDnt0tBc8RczMouUhFmItFIhjjksv+QQMfSpPFYXhRwgcwFR84SJtFkm7OBywdwF831leMN1XnXl4EWAc/dkEqu8= Message-ID: Date: Tue, 17 Oct 2006 17:12:11 -0400 From: "Dmitry Torokhov" To: "Greg.Chandler@wellsfargo.com" Subject: Re: Touchscreen hardware hacking/driver hacking. Cc: linux-kernel@vger.kernel.org, linux-input@atrey.karlin.mff.cuni.cz In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: X-Google-Sender-Auth: 6e01a63ffadf5f12 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1826 Lines: 45 On 10/17/06, Greg.Chandler@wellsfargo.com wrote: > > I'm working on a prototype Hitachi tablet, it uses a Fujitsu 4-wire > resistive touchscreen. {10.4" I think} > I've found that windows-xp embedded uses a generic ps/2 driver for the > device. > > I've ripped this thing to pieces on several occasions looking for chips > to help the porting, my problem is that I can not find the > analog-digital converter for this thing. The connector goes to a > surface mount header on an 8 layer board. > I loose the traces almost instantly. Given that I can't find the > converter anywhere what should I do next? > > I've done my homework and found that this HAS to be either serial or usb > attached according to Fujitsu. > Aparently it's neither. There are no unknown USB devices {or known > matching}, and there is no activity on the single serial port on the > system. Since the windows driver uses PS/2 as the interface I have a > horrible feeling this thing has an interpretation layer that makes it a > PS/2 mouse, and that may or may not royally be a nightmare. > The touchscreen might need a "magic knock" to activate. You might try to see what data wondows driver sends to PS/2 port. Also check of Lifebook touchscreen protocol will work for you. You will need to adjust DMI table in drivers/input/mouse/lifebook.c/ > I would have posted this to a different group but there is no "input" > mailing list. > linux-input@atrey.karlin.mff.cuni.cz But you must be subscribed to post otherwise list just drops your mails on the floor. -- Dmitry - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/