Subject: Re: [PATCH] Expose input device usages to userspace
From: Arjan van de Ven <arjan@infradead.org>
To: Elias Naur <elias@oddlabs.com>
Cc: Dmitry Torokhov <dtor_core@ameritech.net>, linux-kernel@vger.kernel.org
In-Reply-To: <200603140821.32301.elias@oddlabs.com>
References: <200603132154.38876.elias@oddlabs.com>
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	 <200603140026.28522.dtor_core@ameritech.net>
	 <200603140821.32301.elias@oddlabs.com>
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Date: Tue, 14 Mar 2006 09:22:38 +0100
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> > No, I don't think this is needed at all - users should be interested in
> > what capabilities a particular device has, not what type it was assigned
> > by soneone.
> 
> I see your point that an application should not rely too much on device 
> usages. However, the main reason I want device usages is to help applications 
> and users identify and (visually) represent devices. For example, games could 
> show an appropriate icon graphic representing each active device. The event 
> interface already has a few other ioctls for this kind of information:


ok then you should consider to do it the other way around: make a way of
asking
"are you matching THIS profile".
rather than
"what profile are you"

that way devices can present multiple faces etc; which is going to be
needed as more and more weird devices come into existence.


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