linux-kernel - Re: [PATCH 3/5] toshiba_acpi: Add accelerometer input polled device

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Message-ID: <CAGdLNWEgJmNQ_F7kozn4tGCq_AseuE95xHKoxTWgtNqdBwSm5A@mail.gmail.com>
Date:	Wed, 10 Sep 2014 09:28:44 -0600
From:	Azael Avalos <coproscefalo@...il.com>
To:	Darren Hart <dvhart@...radead.org>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jonathan Cameron <jic23@...nel.org>,
	Matthew Garrett <matthew.garrett@...ula.com>,
	"platform-driver-x86@...r.kernel.org" 
	<platform-driver-x86@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-iio@...r.kernel.org
Subject: Re: [PATCH 3/5] toshiba_acpi: Add accelerometer input polled device

Hi there,

2014-09-09 21:35 GMT-06:00 Darren Hart <dvhart@...radead.org>:
>
> I immediately went to a tablet with a marble maze game and it didn't seem too
> crazy, but I don't suppose that is what people are actually doing with it...
>
> What are people actually doing with this thing Azael?

Gaming mostly (supertuxkart anyone?), but some others (including myself)
want to use it as a movement detection (one exists for the IBM/Lenovo
Thinkpads).

Digging into platform drivers, I've found that the hdaps and also the lis3lv02d
drivers report the axes via polldev, and since I don't want to break userspace,
I'm left with two choices:

1 - Keep sysfs entry and adapt it to properly report direction, and no
polled device.

2 - Keep sysfs entry and adapt it to properly report direction, and also
a polled device.

Let me know your decision so I can send an updated patch.

>
> --
> Darren Hart
> Intel Open Source Technology Center

Cheers
Azael


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