From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751910Ab2GSQQc (ORCPT ); Thu, 19 Jul 2012 12:16:32 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:35834 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750847Ab2GSQQa (ORCPT ); Thu, 19 Jul 2012 12:16:30 -0400 Message-ID: <500832D7.4040805@canonical.com> Date: Thu, 19 Jul 2012 09:16:23 -0700 From: Chase Douglas User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120620 Thunderbird/14.0 MIME-Version: 1.0 To: =?UTF-8?B?IkNodW5nLVlpaCBXYW5nICjnjovltIfmh78pIg==?= CC: Dmitry Torokhov , Henrik Rydberg , Daniel Kurtz , JJ Ding , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] Input: synaptics - use firmware data for Cr-48 References: <1342606923-9997-1-git-send-email-cywang@chromium.org> <5006D86C.7030208@canonical.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/18/2012 08:02 PM, Chung-Yih Wang (王崇懿) wrote: > Hi Chase, > > Thanks for your great comments. You are right, it is impossible to > get correct finger tracking if both fingers are moving. However, we > think it still worth to have the firmware tracking of the fingers as > they could perform well for most one-stationary-one-moving cases. This > will be good enough for the one-stationary-one-moving gestures we want > to provide on Cr-48. And that's why we want to make the patch specific > to Cr-48. Can you provide more details on what you are attempting to accomplish? The only thing you can't do easily with semi-mt is: * Rotations (but the hardware can't do it anyway, so this is moot) * Pinch directions at 45 degree angles (i.e. (pinch up and left, down and right) or (pinch down and left, up and right)) You should be able to do everything else with semi-mt, such as pinch horizontally vs pinch vertically, movement, etc. The pinch directions at 45 degree angles could be possible with the Cr-48 trackpad, but I would want to know that there's a real use case for it before undertaking an effort to support it. -- Chase From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chase Douglas Subject: Re: [PATCH v2] Input: synaptics - use firmware data for Cr-48 Date: Thu, 19 Jul 2012 09:16:23 -0700 Message-ID: <500832D7.4040805@canonical.com> References: <1342606923-9997-1-git-send-email-cywang@chromium.org> <5006D86C.7030208@canonical.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from youngberry.canonical.com ([91.189.89.112]:35834 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750847Ab2GSQQa (ORCPT ); Thu, 19 Jul 2012 12:16:30 -0400 In-Reply-To: Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: =?UTF-8?B?IkNodW5nLVlpaCBXYW5nICjnjovltIfmh78pIg==?= Cc: Dmitry Torokhov , Henrik Rydberg , Daniel Kurtz , JJ Ding , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org On 07/18/2012 08:02 PM, Chung-Yih Wang (=E7=8E=8B=E5=B4=87=E6=87=BF) wr= ote: > Hi Chase, > > Thanks for your great comments. You are right, it is impossible t= o > get correct finger tracking if both fingers are moving. However, we > think it still worth to have the firmware tracking of the fingers as > they could perform well for most one-stationary-one-moving cases. Thi= s > will be good enough for the one-stationary-one-moving gestures we wan= t > to provide on Cr-48. And that's why we want to make the patch specifi= c > to Cr-48. Can you provide more details on what you are attempting to accomplish?=20 The only thing you can't do easily with semi-mt is: * Rotations (but the hardware can't do it anyway, so this is moot) * Pinch directions at 45 degree angles (i.e. (pinch up and left, down=20 and right) or (pinch down and left, up and right)) You should be able to do everything else with semi-mt, such as pinch=20 horizontally vs pinch vertically, movement, etc. The pinch directions at 45 degree angles could be possible with the=20 Cr-48 trackpad, but I would want to know that there's a real use case=20 for it before undertaking an effort to support it. -- Chase -- 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