linux-kernel - Re: [GIT PULL] Ambient Light Sensors subsystem

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Date:	Wed, 03 Mar 2010 17:51:14 +0000
From:	Jonathan Cameron <jic23@....ac.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Dima Zavin <dmitriyz@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Zhang Rui <rui.zhang@...el.com>,
	Amit Kucheria <amit.kucheria@...durent.com>,
	Jean Delvare <khali@...ux-fr.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>
Subject: Re: [GIT PULL] Ambient Light Sensors subsystem

Cc'ing Input list and maintainer.
> 
> On Tue, 2 Mar 2010, Dima Zavin wrote:
>>
>> I definitely see the need for what you guys are trying to accomplish.
>> For example, currently, we use an input device for reporting events,
>> and a separate misc device node for control
>> (enable/disable/configure). It's definitely suboptimal, but there
>> currently isn't anything there would let us do things cleanly.
> 
> I have to say, I personally don't see why something like an ambient light 
> sensor _isn't_ just an input device. 
> 
> What's the difference between a physical "increase screen brightness" key, 
> and a "ambient light sensor"? Absolutely none as far as I can tell.
> 
> And for something like an X server, it sounds a lot more natural to just 
> have another input device than to have yet abother event reporting 
> interface.
> 
> And quite frankly, the "explanations" I see in this thread for why it 
> needs to be a subsystem of its own don't actually explain anything or make 
> sense. They seem to boil down to "we just did it this way" without 
> actually answering any of the issues brought up.
> 
> 		Linus
> 

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