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Date: Wed, 2 Jul 2003 11:51:35 -0700 (PDT)
From: Nate Lawson <nate@root.org>
To: Andrea Campi <andrea@webcom.it>
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References: <20030701010230.U86209@root.org> <3F014DFF.3010301@kasimir.com>
 <20030701102415.P87367@root.org> <20030702180146.GA654@webcom.it>
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cc: acpi-jp@jp.FreeBSD.org
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Subject: Re: [acpi-jp 2374] Re: Updated ec-burst.diff patch
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On Wed, 2 Jul 2003, Andrea Campi wrote:
> On Tue, Jul 01, 2003 at 10:25:36AM -0700, Nate Lawson wrote:
> > Would you please turn on "hw.acpi.verbose=1" in loader.conf?  It should
> > explain the cause of those errors.  Also, I would like the output of
> > "dmesg | egrep acpi_ec0\|EC\ Wait".
>
> I tested your patch on my IBM Thinkpad 570E and didn't see any difference.
> I was surprised by that, but hey, what do I know. Then I did a
> "dmesg | egrep acpi_ec0\|EC\ Wait", and got no output at all. Turns out
> I have no acpi_ec0.
>
> Should I worry about that? Will I miss anything because of that? My laptop
> is working correctly in most ways, including thermal zone, profile transition
> when plugging and unplugging the power cord, and power states (in particular
> S4BIOS).

No, if thermal and profile transitions work, you're fine.  I'm not
familiar with the many hardware designs but it appears an EC is not
mandatory and that people have other ways of tying a controller to the
SCI.  My guess is SMbus or other connection.

-Nate