linux-kernel - Re: [PATCH] HP mobile data protection system driver

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Date:	Fri, 13 Oct 2006 18:17:26 +0200
From:	"Burman Yan" <yan_952@...mail.com>
To:	davej@...hat.com, jesper.juhl@...il.com
Cc:	linux-kernel@...r.kernel.org, pazke@...pac.ru
Subject: Re: [PATCH] HP mobile data protection system driver

>From: Dave Jones <davej@...hat.com>
>To: Jesper Juhl <jesper.juhl@...il.com>
>CC: Burman Yan <yan_952@...mail.com>, linux-kernel@...r.kernel.org,        
>Andrey Panin <pazke@...pac.ru>
>Subject: Re: [PATCH] HP mobile data protection system driver
>Date: Fri, 13 Oct 2006 11:50:20 -0400

>Better yet, would be to use the same interface the hdaps driver uses
>so that userspace written for one accelerometer works with any hardware.
>Having to cope with a dozen different drivers who export in different
>places is just silly.
>

That would probably mean that there is a need for single interface. Making 
all accelerometers
export to /sys/devices/platform/hdaps sounds wrong to me. It should be a 
neutral place then.
There aren't that many accelerometers right now as far as I could tell by 
googling.
There are hdaps, amc (something for MAC I think) and now mdps ;)
Only amc and mdps are 3D - hdaps is 2D, and also amc and mdps in theory 
support
a free-fall interrupt instead of polling - I just couldn't get the interrupt 
part to work yet.

I did make the interface as close as I could to hdaps - seem my later post 
with a new patch.

Yan

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