linux-kernel - Re: [LinuxPPS] [PATCH 2/2] pps: new client driver using IRQs

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Date:	Fri, 29 Apr 2011 10:26:23 +0200
From:	Rodolfo Giometti <giometti@...eenne.com>
To:	Igor Plyatov <plyatov@...il.com>
Cc:	Alexander Gordeev <lasaine@....cs.msu.su>,
	linuxpps@...enneenne.com, linux-kernel@...r.kernel.org
Subject: Re: [LinuxPPS] [PATCH 2/2] pps: new client driver using IRQs

On Fri, Apr 29, 2011 at 08:29:55AM +0400, Igor Plyatov wrote:

>>> The latter will definitely mess things up, right?
>> I mean, one surely can register an IRQ resource with both flags set. And
>> if the underlying hardware works as it is described (i.e. raises an irq
>> on both edges) then it will be a problem.
>
> Please don't try to abandon one of ASSERT or CLEAR events!
> It is very useful to register both of them, because in this case its  
> possible to measure pulse width and decode PPS signals like DCF77.

At this point I suppose we should add both ASSERT and CLEAR events...

Ciao,

Rodolfo

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