linux-kernel - Re: [PATCH v3 11/13] HID: hid-multitouch: support for hovering devices

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Message-ID: <20121113185505.GA3641@polaris.bitmath.org>
Date:	Tue, 13 Nov 2012 19:55:05 +0100
From:	"Henrik Rydberg" <rydberg@...omail.se>
To:	Benjamin Tissoires <benjamin.tissoires@...il.com>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Stephane Chatty <chatty@...c.fr>, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 11/13] HID: hid-multitouch: support for hovering
 devices

> I just intend to force the update of the distance value at the
> beginning of the touch.
> This is just to send a coherent state when the finger goes in range,
> and to make sure that user-space application do not rely on the
> undefined value (0) whereas the kernel thought it was set to 1.

Right, so we use EVIOCGMTSLOTS. This "problem" occurs with
ABS_MT_ORIENTATION as well.

Thanks,
Henrik
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