Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752991Ab0KGU7O (ORCPT ); Sun, 7 Nov 2010 15:59:14 -0500 Received: from fox.seas.upenn.edu ([158.130.68.12]:41927 "EHLO fox.seas.upenn.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752533Ab0KGU7N (ORCPT ); Sun, 7 Nov 2010 15:59:13 -0500 X-Greylist: delayed 848 seconds by postgrey-1.27 at vger.kernel.org; Sun, 07 Nov 2010 15:59:13 EST Message-ID: <4CD70FC0.6060503@seas.upenn.edu> Date: Sun, 07 Nov 2010 15:44:48 -0500 From: Rafi Rubin User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6 MIME-Version: 1.0 To: Henrik Rydberg CC: Dmitry Torokhov , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Chris Bagwell , Chase Douglas , Takashi Iwai Subject: Re: [PATCH] input: Introduce light-weight contact tracking References: <1289161108-32309-1-git-send-email-rydberg@euromail.se> In-Reply-To: <1289161108-32309-1-git-send-email-rydberg@euromail.se> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.2.15,1.0.148,0.0.0000 definitions=2010-11-07_06:2010-11-05,2010-11-07,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx engine=5.0.0-1005130000 definitions=main-1011070114 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 795 Lines: 16 On 11/07/2010 03:18 PM, Henrik Rydberg wrote: > Some kernel drivers demand the use of contact tracking for proper > filtering and pointer emulation. With one exception, these drivers > are limited to a maximum of four concurrent contacts. This patch adds > a simple matcher for up to four contacts, with these notable properties: Tracking in the ntrig driver needs to support a minimum of 6 fingers. I have also seen press releases claiming 10+ eventually. I don't know if those devices will support tracking in the hardware/firmware. Rafi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/