From mboxrd@z Thu Jan 1 00:00:00 1970 From: Henrik Rydberg Subject: Re: Questions about Multi-touch Protocal Date: Wed, 13 Jan 2010 21:21:37 +0100 Message-ID: <4B4E2B51.8010506@euromail.se> References: <4B42D998.4050303@samsung.com> <4B432BDB.3000103@euromail.se> <4B43DE36.6000907@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from ch-smtp01.sth.basefarm.net ([80.76.149.212]:39458 "EHLO ch-smtp01.sth.basefarm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756312Ab0AMUWR (ORCPT ); Wed, 13 Jan 2010 15:22:17 -0500 In-Reply-To: <4B43DE36.6000907@samsung.com> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Joonyoung Shim Cc: linux-input@vger.kernel.org, dmitry.torokhov@gmail.com, jkosina@suse.cz Joonyoung Shim wrote: [..] > > The ABS_MT_TOUCH_MAJOR needs for several things as you explain, but i > think it isn't essential event for multi-touch such ABS_PRESSURE. > If we can get only the coodinates of each fingers, is it full enough for > minimum supporting of multi-touch? Yes, it will be fine, one can drop ABS_MT_TOUCH_MAJOR for minimal support of the MT protocol. I will change the documentation accordingly. Henrik