From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753232Ab3BCD1j (ORCPT ); Sat, 2 Feb 2013 22:27:39 -0500 Received: from host171.canaca.com ([67.55.55.225]:46651 "EHLO host171.canaca.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752639Ab3BCD1g (ORCPT ); Sat, 2 Feb 2013 22:27:36 -0500 Message-ID: In-Reply-To: References: <1359837925-6383-1-git-send-email-sbarra.paul@gmail.com> Date: Sat, 2 Feb 2013 22:27:29 -0500 Subject: Re: [PATCH 1/3] hid: Add report descriptor for Logitech Driving Force wheel From: simon@mungewell.org To: simon@mungewell.org Cc: "Paul Sbarra" , jkosina@suse.cz, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org User-Agent: SquirrelMail/1.4.22 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Priority: 3 (Normal) Importance: Normal X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - host171.canaca.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - mungewell.org X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Hi Paul, > I'm not following as to why you are patching the descriptor for the DFP, > my understanding is that this is fully supported at the moment (as > USB_DEVICE_ID_LOGITECH_DFP_WHEEL in the line after your patch). Ah... you said 'Driving Force'.. not 'Driving Force Pro', but given the confusing naming schemes I think I can be excused :-) http://en.wikipedia.org/wiki/Gran_Turismo_official_steering_wheel#Model_comparison However I do remember that there's a quirk with the logitech wheels that they all pretend to be the same device, but some can be sent a magic command which makes them disconnect and re-connect with a different USB ID and with the larger steering range. http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=blob;f=drivers/hid/hid-lg4ff.c;h=d7947c701f3063ac6c3683c29d3eca333b7ca1b0;hb=8b31849a113a8868eb2de692be5c9ecadae93ac9#l549 So in summary we need to be careful with "046d:c294 Logitech, Inc. Driving Force" Personally I have a Driving Force Pro, Driving Force Wireless and a G27 which all start with reporting this ID. So a couple of questions: 1) Are you sure you have a "Driving Force"? 2) Does the ForceFeedback work for you? Just for reference we moved the FF for the logitech wheels to hid-lg4ff back in Aug 2011, I'm not sure which mainline kernel that was... http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=history;f=drivers/hid/hid-lg4ff.c;h=d7947c701f3063ac6c3683c29d3eca333b7ca1b0;hb=8b31849a113a8868eb2de692be5c9ecadae93ac9 Simon