From mboxrd@z Thu Jan 1 00:00:00 1970 From: Henrik Rydberg Subject: Re: [PATCH 7/7] elantech: average the two coordinates when 2 fingers Date: Mon, 02 Aug 2010 15:03:15 +0200 Message-ID: <4C56C213.2010605@euromail.se> References: <4C1FD2B0.1080504@tudelft.nl> <4C1FD454.4050807@tudelft.nl> <20100721033655.GA9070@core.coreip.homeip.net> <4C532009.4020103@tudelft.nl> <4C533DC3.9070001@euromail.se> <4C54ABFE.8050106@tudelft.nl> <4C554058.6080203@euromail.se> <4C555A44.5050505@tudelft.nl> <4C557D3A.3050501@euromail.se> <4C567F27.7070900@tudelft.nl> <4C5697C4.1020801@euromail.se> <4C56A81E.3040703@tudelft.nl> <4C56AA67.8000902@euromail.se> <4C56AD12.1080106@tudelft.nl> <4C56B00B.50204@euromail.se> <4C56B686.60606@tudelft.nl> <4C56BA13.3030104@euromail.se> <4C56BE30.2070807@tudelft.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from ch-smtp01.sth.basefarm.net ([80.76.149.212]:52502 "EHLO ch-smtp01.sth.basefarm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751202Ab0HBNEk (ORCPT ); Mon, 2 Aug 2010 09:04:40 -0400 In-Reply-To: <4C56BE30.2070807@tudelft.nl> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: =?ISO-8859-1?Q?=C9ric_Piel?= Cc: Chris Bagwell , Dmitry Torokhov , "linux-input@vger.kernel.org" , Florian Ragwitz On 08/02/2010 02:46 PM, =C9ric Piel wrote: [...] >> >> We can do better in the sense that since the device cannot comply wi= th MT-A, we >> can do as close as possible to MT-B with less cpu usage. But frankly= , the best >> solution at this stage seems to be to drop MT handling altogether, s= ince there >> does not seem to be any plan to use it. > Ah, this alternative solution is a bit boring ;-) In addition it's no= t > compatible with my own master plan to eventually have the "pinch to > zoom" and "rotate to rotate" gestures work on my laptop, like in Wind= ows ;-) Since rotational symmetry is what prevents us from implementing proper = MT support, it is not likely going to work anyways. > So, let's agree on just the two patches I'm going to send to support > "better than nothing" MT-protocol for now. When, later, someone has > better ideas, he can send patches to improve MT-protocol > support/compliance. Fine? No. I think it is fair to say we tried to make it work properly, but th= e (known) information about the device is simply not enough. As long as MT does n= ot work properly, there is no point in adding it at all - in particular not an = elaborate solution. I can see that zoom would work even with a poor MT implementa= tion, but that is not what the MT protocol is about. Maybe one day someone will f= ind the missing information somewhere in the packets. =46or your usecase, perhaps one should add ABS_ZOOM etcetera instead, a= nd patch up synaptics to use those values. Henrik -- To unsubscribe from this list: send the line "unsubscribe linux-input" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html