From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752633Ab0JJHuA (ORCPT ); Sun, 10 Oct 2010 03:50:00 -0400 Received: from ch-smtp03.sth.basefarm.net ([80.76.149.214]:41211 "EHLO ch-smtp03.sth.basefarm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752524Ab0JJHt7 (ORCPT ); Sun, 10 Oct 2010 03:49:59 -0400 Message-ID: <4CB17019.7070002@euromail.se> Date: Sun, 10 Oct 2010 09:49:45 +0200 From: Henrik Rydberg User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100922 Thunderbird/3.1.4 MIME-Version: 1.0 To: Takashi Iwai , Chase Douglas CC: linux-input@vger.kernel.org, Dmitry Torokhov , linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/3] Input: synaptics - multitouch and multifinger support References: <1286549880-32580-1-git-send-email-chase.douglas@canonical.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Originating-IP: 83.248.196.134 X-Scan-Result: No virus found in message 1P4qfK-0001Fu-BN. X-Scan-Signature: ch-smtp03.sth.basefarm.net 1P4qfK-0001Fu-BN cc3c915f5ced2e5e4d7e9463b6a23932 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Takashi, Chase, talk about Heinz effect. :-) Rather than taking any of the patches, I was wondering if we could get a single patch including all the later findings and considerations on what devices should have the multitouch mode. Also, unless there is a really really good reason for it, without kernel parameters. After all, these patches should only add new functionality without regressions. Regarding the clickpad functionality, it is similar to the macbook pads with integrated buttons, which has been implemented in userspace. Regarding the tracking aspect of pointer emulation, Chase is completely right, and this is a generic problem for several drivers. Tracking a single point by picking the closest contact is a linear problem and could easily be performed in interrupt context. I suggest we add it directly to the synaptics driver and then revisit the question of adding generic tracking support to the kernel. Dmitry, how does that sound to you? Cheers, Henrik