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Date: Fri, 10 Dec 2010 10:50:42 -0800
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Ping Cheng <pinglinux@gmail.com>
Cc: Henrik Rydberg <rydberg@euromail.se>, Jiri Kosina <jkosina@suse.cz>,
        linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] input: mt: Interface and MT_TOOL documentation updates
Message-ID: <20101210185041.GC1630@core.coreip.homeip.net>
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On Fri, Dec 10, 2010 at 10:13:06AM -0800, Dmitry Torokhov wrote:
> On Fri, Dec 10, 2010 at 09:55:12AM -0800, Ping Cheng wrote:
> > On Thu, Dec 9, 2010 at 1:22 PM, Henrik Rydberg <rydberg@euromail.se> wrote:
> > > +
> > > +- The MT_TOOL_ENVELOPE type is used to indicate that the contact position
> > > +is not well-defined, and is only used for legacy hardware. The real contact
> > > +positions are to be found within the bounding rectangle formed by the
> > > +envelope contact positions.
> > 
> > Can we make MT_TOOL_ENVELOPE cover a bit more cases by:
> > 
> > 1. Removing ", and is only used for legacy hardware";
> > 2. Adding "Or the number of contacts inside the bounding rectangle is
> > reported if hardware provides the number but not the real contact
> > positions" to the end of the paragraph.
> 
> Are you saying that there is upcoming hardware models that do not report
> individual contacts?
> 

Anyway, if we plot the evolution of hardware:

	ST -> ST + #fingers -> Envelope -> Full MT

I think we can rigthfully say that at this time all hardware that is not
full MT is legacy technology...

-- 
Dmitry
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