linux-kernel - Re: [RFC] Staging:IIO: New ABI

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Date:	Tue, 26 Jan 2010 01:34:22 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Greg KH <greg@...ah.com>
Cc:	Jonathan Cameron <kernel@...23.retrosnub.co.uk>,
	Jonathan Cameron <jic23@....ac.uk>,
	LKML <linux-kernel@...r.kernel.org>,
	Manuel Stahl <manuel.stahl@....fraunhofer.de>,
	"Hennerich, Michael" <Michael.Hennerich@...log.com>,
	"Frysinger, Michael" <Michael.Frysinger@...log.com>,
	"Getz, Robin" <Robin.Getz@...log.com>,
	Jean Delvare <khali@...ux-fr.org>,
	"Trisal, Kalhan" <kalhan.trisal@...el.com>,
	"Zhang, Xing Z" <xing.z.zhang@...el.com>,
	Ira Snyder <iws@...o.caltech.edu>
Subject: Re: [RFC] Staging:IIO: New ABI

On Fri, Jan 22, 2010 at 04:31:12PM -0800, Greg KH wrote:
> On Fri, Jan 22, 2010 at 04:14:15PM -0800, Dmitry Torokhov wrote:
> > On Fri, Jan 22, 2010 at 12:47:18PM -0800, Greg KH wrote:
> > > On Wed, Jan 20, 2010 at 04:53:21PM +0000, Jonathan Cameron wrote:
> > > > I am not aware of these. Could you direct me to the current api? Also note that these
> > > > aren't the actual alarms, merely a means of enabling the relevant event on the related
> > > > event character device. 
> > > 
> > > Hm, I thought we had an accelerator interface somewhere...
> > > 
> > 
> > Nope. And I am also interested in this since I am sittign on a bunch of
> > accelerometers, magnetometers, etc drivers that are trying to plug into
> > input sysbsystem and quite unsure what to do with them.
> > 
> > It was OK whch HDAPS and friends when they were using input for
> > secondary, toyish purposes, but these new drivers trying to use input
> > devnts as primary API and I am unsure if it is the best solution.
> > Accelerometer might be used as an input device but not always an input
> > device.
> 
> Yeah, I see it using a joystick interface, which might be acceptable for
> "toy" devices like you say.
> 
> But for "real" ones, we should do something else.
> 
> Maybe, for devices that are going to be used by x.org, like the "toy"
> ones, we stick with the current input interface, but for others, we use
> a "real" interface, probably through hwmon, so that users can get the
> real data out in a consistant manner.
>

I'd rather have all of them use real interface and then have a bridge
to input module to enable toyish mode (unless the device in question
is really truly an input device).
 
-- 
Dmitry
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