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Date:      Mon, 31 Aug 2009 11:57:01 -0700
From:      Nate Lawson <nate@root.org>
To:        Andriy Gapon <avg@freebsd.org>
Cc:        freebsd-acpi@freebsd.org
Subject:   Re: acpi_wmi dependency on acpi_ec
Message-ID:  <4A9C1CFD.1010602@root.org>
In-Reply-To: <4A99547A.7090809@freebsd.org>
References:  <4A99547A.7090809@freebsd.org>

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Andriy Gapon wrote:
> 
> Does acpi_wmi have to depend on acpi_ec so strongly as it does now?
> 
> The reason I am asking is that I have a desktop system that seems to
> provide "something WMI", but doesn't have an EC:
> http://people.freebsd.org/~avg/ga-ma780g-ud3h/acpi.asl

WMI is two things:
1. proprietary API to some data already available in ACPI
2. standard for organizing system information not yet listed in the ACPI
spec

> I am not sure how to proceed next and if I can actually get anything
> useful with WMI on this system.
> For now I extracted binary MOF file stored in WQBA and used wmimofck
> utility (from Windows Driver Kit) on it. The following is the resulting
> header file:
> http://people.freebsd.org/~avg/ga-ma780g-ud3h/wq.h
> Any advice on what I could try next?

What you can do with it is totally dependent on the system. Sometimes it
offers a lot of info, sometimes not. With laptops, I think most
manufacturers ignored WMI and ACPI and wrote their own hotkey drivers.

-- 
Nate




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