Date: Tue, 01 Sep 2009 13:14:44 +0300 From: Andriy Gapon <avg@freebsd.org> To: Nate Lawson <nate@root.org> Cc: freebsd-acpi@freebsd.org Subject: Re: acpi_wmi dependency on acpi_ec Message-ID: <4A9CF414.5060800@freebsd.org> In-Reply-To: <4A9C1CFD.1010602@root.org> References: <4A99547A.7090809@freebsd.org> <4A9C1CFD.1010602@root.org>
next in thread | previous in thread | raw e-mail | index | archive | help
on 31/08/2009 21:57 Nate Lawson said the following: > 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 Nate, thank you - I am getting some knowledge on WMI (WMI+ACPI specifically), but it is quite a big subject. >> 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. In this case I determined that ASL provides WMI interface for AMD OverDrive. In ASL I see code that accesses clock generator via i2c and similar. I think that with enough time and motivation I could figure out how to use that interface (from looking at the header file and ASL code for WMI methods). But right now I am lacking both. -- Andriy Gapon
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4A9CF414.5060800>