linux-kernel - Re: [PATCH 2/2] input: mt: Document the MT event slot protocol (rev2)

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Message-Id: <1274455140.1871.8.camel@tron>
Date:	Fri, 21 May 2010 08:19:00 -0700
From:	Rafi Rubin <rafi@...s.upenn.edu>
To:	Ping Cheng <pinglinux@...il.com>,
	Henrik Rydberg <rydberg@...omail.se>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Mika Kuoppala <mika.kuoppala@...ia.com>,
	Peter Hutterer <peter.hutterer@...-t.net>,
	Benjamin Tissoires <tissoire@...a.fr>,
	Stephane Chatty <chatty@...c.fr>,
	Michael Poole <mdpoole@...ilus.org>
Subject: Re: [PATCH 2/2] input: mt: Document the MT event slot protocol
	(rev2)

> ABS_MT_BLOB_ID 11
> ABS_MT_TRACKING_ID 45
> ABS_MT_SLOT_ID 0
> ABS_MT_POSITION_X x[0]
> ABS_MT_POSITION_Y y[0]
> ABS_MT_SLOT_ID 1
> ABS_MT_POSITION_X x[1]
> ABS_MT_POSITION_Y y[1]
> ABS_MT_SLOT_ID 2
> ABS_MT_POSITION_X x[2]
> ABS_MT_POSITION_Y y[2]
> SYN_MT_BLOB
> ABS_MT_BLOB_ID 89
> ABS_MT_SLOT_ID 3
> ABS_MT_TRACKING_ID 30
> ABS_MT_POSITION_X x[3]
> ABS_MT_POSITION_Y y[3]
> SYN_MT_BLOB
> SYN_REPORT
>
> where we have two blob of data. They represent finger 1 and finger 2.
> Finger 1 has a tracking number 11 while finger 2 has 30.  We do not
> track the three contacts inside the blob since they all belong to the
> same finger.  We could even combine type A and B as:

???

Ping: please confirm, are you actually talking about each finger simultaneously sending multiple positions?

Rafi
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