From: Florian Schmidt <mista.tapas@gmx.net>
To: linux-os@analogic.com
Cc: linux-os@chaos.analogic.com, Linux kernel <linux-kernel@vger.kernel.org>
Subject: Re: RTC Chip and IRQ8 on 2.6.9
Date: Sun, 14 Nov 2004 13:27:10 +0100 [thread overview]
Message-ID: <20041114132710.09533649@mango.fruits.de> (raw)
In-Reply-To: <Pine.LNX.4.61.0411121145520.14827@chaos.analogic.com>
On Fri, 12 Nov 2004 11:47:10 -0500 (EST)
linux-os <linux-os@chaos.analogic.com> wrote:
>
> I must use the RTC and IRQ8 in a driver being ported from
> 2.4.20 to 2.6.9. When I attempt request_irq(8,...), it
> returns -EBUSY. I have disabled everything in .config
> that has "RTC" in it.
>
> The RTC interrupt is used to precisely time the sequencing
> of a precision A/D converter. It is mandatory that I use
> it because the precise interval is essential for its
> IIR filter that produces 20 bits of resolution from a
> 16 bit A/D.
>
> 8: 1 IO-APIC-edge rtc
maybe it's the HPET timer providing rtc emulation?
flo
next prev parent reply other threads:[~2004-11-14 12:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-12 16:47 RTC Chip and IRQ8 on 2.6.9 linux-os
2004-11-14 4:36 ` Randy.Dunlap
2004-11-14 14:25 ` linux-os
2004-11-14 12:27 ` Florian Schmidt [this message]
2004-11-14 14:28 ` linux-os
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