linux-kernel - Re: [PATCH 3/3] HID: rmi: disable palm detect gesture when present

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Date:	Wed, 25 Feb 2015 10:09:23 +0100
From:	Gabriele Mazzotta <gabriele.mzt@...il.com>
To:	Andrew Duggan <aduggan@...aptics.com>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jiri Kosina <jkosina@...e.cz>,
	Benjamin Tissoires <benjamin.tissoires@...hat.com>
Subject: Re: [PATCH 3/3] HID: rmi: disable palm detect gesture when present

On Tuesday 24 February 2015 17:36:50 Andrew Duggan wrote:
> A touchpad may have firmware based palm detection code enabled which
> suppresses 2D data from being reported when the firmware believes a palm is
> on the touchpad. This functionality is meant to be used in mouse mode without
> a driver. When a driver is present, the driver can do a better job of
> determining if a contact is a palm. If this gesture is enabled on a touchpad
> operating in rmi mode then the firmware will not properly clear the palm detect
> interrupt, causing the touchpad to interrupt indefinately. This patch disables
> the palm detect gesture when the touchpad is operating in rmi mode.
> 
> Signed-off-by: Andrew Duggan <aduggan@...aptics.com>
> ---
> Hi Gabriele,
> 
> Can you test this patch on your system to confirm that it fixes your issue?
> I was able to test the  other two patches so I can confirm that the write
> fuction works. But, I don't have a touchpad with the palm detect gesture
> enabled so it would be good to double check that I have the right address and
> mask.
> 
> Andrew

I tested it and confirm that it's working. Thanks.

Gabriele
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