From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: [PATCH 1/6] Haptic: add haptic class Date: Tue, 13 Oct 2009 13:35:47 +0300 Message-ID: <359ed6810910130335m45919d6ala921d4cbfa5a341a@mail.gmail.com> References: <20091007061701.GA7567@july> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: In-Reply-To: <20091007061701.GA7567@july> Sender: linux-kernel-owner@vger.kernel.org To: Kyungmin Park Cc: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, soni.trilok@gmail.com List-Id: linux-input@vger.kernel.org On Wed, Oct 7, 2009 at 09:17, Kyungmin Park wrote: > New haptic class support. > This class handles the haptic devices. I'm wondering why a haptic class is needed when there is force feedback support. Admittedly, I don't know the force feedback implementation too well, but could someone please enlighten me on this? Am I missing something here? I see haptics as simple force feedback, just with (usually) small force and short duration. There are devices out there doing haptics using vibra motors, which I think would be limited if implemented using this haptics class driver. Would it be somehow problematic interfacing with the simple haptic hardware using the force feedback API? BR, Jani.