From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265584AbTFMXna (ORCPT ); Fri, 13 Jun 2003 19:43:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265585AbTFMXn3 (ORCPT ); Fri, 13 Jun 2003 19:43:29 -0400 Received: from phoenix.infradead.org ([195.224.96.167]:50439 "EHLO phoenix.infradead.org") by vger.kernel.org with ESMTP id S265584AbTFMXn2 (ORCPT ); Fri, 13 Jun 2003 19:43:28 -0400 Date: Sat, 14 Jun 2003 00:57:14 +0100 (BST) From: James Simmons To: Vojtech Pavlik cc: Peter Berg Larsen , Subject: Re: [PATCH] Synaptics TouchPad driver for 2.5.70 In-Reply-To: <20030614000857.B10851@ucw.cz> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > > > > Just as a idea for API. How about ABS_AREA or REL_AREA instead of > > > > ABS_MISC. The idea is the pressure value returned should be about > > > > the same if one presses hard with one finger or softly with a whole > > > > hand. > > > > > > Huh? Force = Pressure x Area ... I think you're mixing up force and > > > pressure here. > > > > OOps. Your right. I'm thinking the hardware returns a force value. What I > > meant is since we have the hardware returning the pressure and the area > > this data can be used. Knowing the area over which a pressure is applied > > is a good thing. What do you think? > > Definitely. Still it doesn't cover the multi-tap/gesture stuff. How about EV_AREA codes = "which area" 1, 2, 3 value = "How big of a area" struct input_event { struct timeval time; __u16 type; EV_AREA __u16 code; AREA_1 __s32 value; 20 };