From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?0KHQtdGA0LPQtdC5INCR0LXQu9GP0YjQvtCy?= Subject: Force feedback (axis information) Date: Wed, 6 May 2009 22:42:07 +0400 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from ey-out-2122.google.com ([74.125.78.24]:2735 "EHLO ey-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752350AbZEFSmI (ORCPT ); Wed, 6 May 2009 14:42:08 -0400 Received: by ey-out-2122.google.com with SMTP id 9so121771eyd.37 for ; Wed, 06 May 2009 11:42:07 -0700 (PDT) Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: linux-input@vger.kernel.org Hello I look code of ff-utils (fftest.c) and found that this program checks axis information for FF effects. For example, if kernel provides an ABS_X (also supported ABS_Y and ABS_WHEEL) via EVIOCGBIT(EV_FF, ...), then fftest shows "Axes query: Axis X". But I cannot found this feature in any existing driver. Moreover, documentation does not contain any information about it. So, is it really neccessary feature (I think yes)? I am ready to create autocenter support patch for Logitech Force 3D Pro (046d:c286). But all tested by me Logitech Joysticks with FF has support for autocentering in same way. May be it is good idea to add this feature for all joysticks in hid-lgff.c? If some joystick do not support it (users reported), then it is possible to exclude autocentering for this joystick later. Best regards, Sergey Belyashov