From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Frias Subject: Re: [Linux-parport] True Parallel Port Interface for Bit-banging? Date: Mon, 7 Nov 2016 13:44:54 +0100 Message-ID: <58207746.2020802@laposte.net> References: <580F4042.5070201@laposte.net> <20161025120951.GL1597@katana> <580F6A1D.4000409@laposte.net> <20161025142935.GA2875@katana> <580F72AF.9070900@laposte.net> <7bd6ea08-361e-316f-be7f-d400b59aec0d@maciej.szmigiero.name> <581327AC.8060404@laposte.net> <5461ac01-6054-e222-f707-0b475c24276d@maciej.szmigiero.name> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: Received: from smtpoutz27.laposte.net ([194.117.213.102]:46966 "EHLO smtp.laposte.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751325AbcKGMo7 (ORCPT ); Mon, 7 Nov 2016 07:44:59 -0500 Received: from smtp.laposte.net (localhost [127.0.0.1]) by lpn-prd-vrout015 (Postfix) with ESMTP id ABA1D1C9186 for ; Mon, 7 Nov 2016 13:44:56 +0100 (CET) Received: from smtp.laposte.net (localhost [127.0.0.1]) by lpn-prd-vrout015 (Postfix) with ESMTP id 9CE651C918B for ; Mon, 7 Nov 2016 13:44:56 +0100 (CET) Received: from lpn-prd-vrin003 (lpn-prd-vrin003.prosodie [10.128.63.4]) by lpn-prd-vrout015 (Postfix) with ESMTP id 9878F1C9186 for ; Mon, 7 Nov 2016 13:44:56 +0100 (CET) Received: from lpn-prd-vrin003 (localhost [127.0.0.1]) by lpn-prd-vrin003 (Postfix) with ESMTP id 7D1D248E079 for ; Mon, 7 Nov 2016 13:44:56 +0100 (CET) In-Reply-To: <5461ac01-6054-e222-f707-0b475c24276d@maciej.szmigiero.name> Sender: linux-i2c-owner@vger.kernel.org List-Id: linux-i2c@vger.kernel.org To: "Maciej S. Szmigiero" Cc: Wolfram Sang , Sudip Mukherjee , linux-parport@lists.infradead.org, philb@gnu.org, tim@cyberelk.net, Jean Delvare , linux-i2c@vger.kernel.org On 10/29/2016 01:12 AM, Maciej S. Szmigiero wrote: >> Would you mind sharing the laptop's model? > > This is Elitebook model 8570p. That seems like a fairly recent laptop: http://www.notebookcheck.net/Review-HP-EliteBook-8570p-B6Q03EA-ABD-Notebook.82291.0.html and it has a true parallel port? Thanks a lot for the pointer! >> There are a bunch of >> Elitebooks and maybe not all have the ports wired. >> Does your laptop has the Parallel Port on the docking or on the laptop >> itself? > > Only a serial port socket is built-it, parallel port socket is > available only via a port replicator. > > According to description of this replicator it is compatible with > a lot of different Elitebooks and Probooks: > http://h30094.www3.hp.com/product.aspx?sku=10432928&mfg_part=A7E34AA&pagemode=ca > > I wasn't able find any note in this replicator description that port > availability depends on connected laptop model. > You can try to search for particular laptop model schematics, even > if it is available only for sale sometimes there is a preview > page with block diagram which clearly show where the parallel port > is connected (this is true for my laptop model for example). > > However, whether the port is on standard I/O address and interrupt > line requires some more digging. Thanks for the information. >> Do you know the command to enable them thru PnP? Shouldn't loading >> the kernel module be enough? Or is it the other way around and >> enabling thru PnP triggers the kernel module load process? > > If you want to use them under Linux then everything should be taken > care of by kernel's PnP support. > It can be problem if you want to use them under pure DOS. > I see, thanks.