From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Torokhov Subject: Re: ALPS touchpad ot correctly recognized: GlidePoint vs DualPoint Date: Sat, 9 Sep 2017 11:12:18 -0700 Message-ID: <20170909181218.GA29107@dtor-ws> References: <201709080848.53286@pali> <52f87b68-8a6b-1d9c-f341-1e488ff43441@posteo.net> <201709091036.06899@pali> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Return-path: Received: from mail-pg0-f54.google.com ([74.125.83.54]:34966 "EHLO mail-pg0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751166AbdIISMV (ORCPT ); Sat, 9 Sep 2017 14:12:21 -0400 Received: by mail-pg0-f54.google.com with SMTP id 188so9382997pgb.2 for ; Sat, 09 Sep 2017 11:12:21 -0700 (PDT) Content-Disposition: inline In-Reply-To: <201709091036.06899@pali> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Pali =?iso-8859-1?Q?Roh=E1r?= Cc: Juanito , "masaki.ota@jp.alps.com" , linux-input@vger.kernel.org, Paul Donohue On Sat, Sep 09, 2017 at 10:36:06AM +0200, Pali Rohár wrote: > On Saturday 09 September 2017 10:12:42 Juanito wrote: > > Hello, > > > > On 09/08/2017 08:48 AM, Pali Rohár wrote: > > > On Friday 08 September 2017 07:00:34 Juanito wrote: > > >>> ThinkPad with ALPS? Should not be it Synaptic? Maybe > > >>> miss-detection? > > >> > > >> Sorry, I forgot to mention this. The ThinkPad came with a clickpad > > >> I **really** disliked, so I bought this on the Internet. > > > > > > So, here is a problem. ThinkPads works with Synaptic touchpads, not > > > with ALPS. > > > > There definitely seems to be a problem here :) > > > > Do you mean that the alps code might not be detecting the trackpoint > > because probably the red thingie works with synaptics? > > > > So could this be the situation: > > ALPS driver: Hey touchpad! Do you have a trackstick? > > ALPS touchpad: No, I don't. > > AD: Ok! (and thinks 'I am going to have to ignore all trackstick > > packets that might arrive') > > > > So the driver understands that there can't possibly be any buttons > > because there is no trackstick? > > IIRC ALPS touchpad hardware itself does not work with non-ALPS > trackpoint. > > Masaki, any comments? > > > >> If by trackstick you mean the red thingie, it is **not** working. > > > > > > Ok. And it is working with your patch? > > > > No, it isn't :( > > I expected... You just created franken-hardware. > > Looks like with your hack patch it is possible to make buttons working, > but I suspect that trackstick would. > > Maybe Masaki can provide more information about this fact if we can do > anything. > > Dmitry, what you as maintainer going to do with this problem? It really depends on Ota-san response. If ALPS needs a special version of firmware flashed for proper trackstick identification, then I guess Juanito will have to carry a local patch. I do not think we want to complicate the driver any further for supporting such after-market modification. Does booting with psmouse.proto=imps makes trackstick work? Thanks. -- Dmitry