linux-kernel - Re: [PATCH] Input: atmel_mxt_ts - implement T100 touch object support

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Message-ID: <54943E99.5060206@itdev.co.uk>
Date:	Fri, 19 Dec 2014 15:04:57 +0000
From:	Nick Dyer <nick.dyer@...ev.co.uk>
To:	Benson Leung <bleung@...omium.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	Yufeng Shen <miletus@...gle.com>,
	Daniel Kurtz <djkurtz@...omium.org>,
	Henrik Rydberg <rydberg@...omail.se>,
	Joonyoung Shim <jy0922.shim@...sung.com>,
	Alan Bowens <Alan.Bowens@...el.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Peter Meerwald <pmeerw@...erw.net>,
	Olof Johansson <olofj@...omium.org>,
	Sekhar Nori <nsekhar@...com>,
	Stephen Warren <swarren@...dotorg.org>,
	Chung-yih Wang <cywang@...omium.org>
Subject: Re: [PATCH] Input: atmel_mxt_ts - implement T100 touch object support

Hi Benson-

On 18/12/14 18:49, Benson Leung wrote:
> Dmitry and Chung-Yih have had some discussion about how to handle
> hovering fingers, and I think the direction they wanted to go was to
> use ABS_MT_DISTANCE instead.
> 
> http://www.spinics.net/lists/linux-input/msg33950.html

Thanks for flagging this up. The patch I submitted is written against the
Android touch devices spec, which treats ABS_MT_PRESSURE being zero as
hover, but indeed currently the handling of BTN_TOUCH when using
input_mt_report_pointer_emaultion() won't be quite right.

I will have a look at straightening this out and re-post.

cheers

Nick
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