linux-kernel - Re: Help with rtc to hpet conversion of OSGPS driver

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Date:	Thu, 11 Oct 2007 15:23:13 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	Rick Niles <fniles@...pooh.org>
cc:	linux-kernel@...r.kernel.org
Subject: Re: Help with rtc to hpet conversion of OSGPS driver


On Oct 11 2007 08:51, Rick Niles wrote:
>
> Maybe I'm way off here, but that seems to be the function to register a RTC
> hardware chip with the kernel.  I want to use a real-time clock interrupt to
> wake up my driver and service the GPS correlator, about every 500ms.  Please
> let me know if I'm misunderstanding.

You register your hardware, and then the userspace program opens /dev/rtc17
or whatever node is assigned to it, and receives periodic interrupts.
At least that's the theory for rtc-cmos.

And don't top post.

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