From mboxrd@z Thu Jan 1 00:00:00 1970 From: Henrik Rydberg Subject: Re: [PATCH] input: Add a detailed multi-touch finger data report protocol Date: Fri, 07 Nov 2008 15:26:30 +0100 Message-ID: <49145016.7090206@euromail.se> References: <49142351.9080805@euromail.se> <3aaafc130811070534p54eebeb6q9b57d3e847ed859a@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from ch-smtp02.sth.basefarm.net ([80.76.149.213]:37984 "EHLO ch-smtp02.sth.basefarm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750904AbYKGO0p (ORCPT ); Fri, 7 Nov 2008 09:26:45 -0500 In-Reply-To: <3aaafc130811070534p54eebeb6q9b57d3e847ed859a@mail.gmail.com> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: "J.R. Mauro" Cc: Dmitry Torokhov , Andrew Morton , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org J.R. Mauro wrote: > On Fri, Nov 7, 2008 at 6:15 AM, Henrik Rydberg wrote: >> In order to utilize the full power of the new multi-touch devices, a >> way to report detailed finger data to user space is needed. This patch >> adds a multi-touch (MT) protocol which allows drivers to report details >> for an arbitrary number of fingers. > > This is a great idea, Henrik. How will things like X11 go about > leveraging this functionality? What I have in mind is this: 1. Add support for the MT interface in the trackpad drivers, to the extent they support the information. First out is bcm5974, for which the interface is designed. A patch is prepared, but I will keep it on hold for a little while longer. 2. Add support for the MT protocol in Xorg synaptics and/or a new Xorg multitouch driver. As you might have guessed, I have an experimental driver, utilizing the MT protocol. It uses proper matching techniques to obtain smooth multi-finger actions. My plan is to launch this in user space as soon as there is kernel support. Henrik