2009-07-21 23:50:13

by djwong

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Subject: ACPI power meter driver?

Hi everyone,

I noticed that section 10.4 of the ACPI 4.0 spec mentions exposing power meter
hardware via the DSDT. Is anybody currently writing a Linux driver for that
power meter interface? Or am I volunteering for that task? :)

--D


2009-07-22 01:17:41

by Zhang, Rui

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Subject: Re: ACPI power meter driver?

On Wed, 2009-07-22 at 07:49 +0800, Darrick J. Wong wrote:
> Hi everyone,
>
> I noticed that section 10.4 of the ACPI 4.0 spec mentions exposing power meter
> hardware via the DSDT.

right.

> Is anybody currently writing a Linux driver for that
> power meter interface?
>
do you have an laptop with that implemented?
can you attach the acpidump output please? :)

thanks
rui

2009-07-22 05:47:43

by djwong

[permalink] [raw]
Subject: Re: ACPI power meter driver?

On Wed, Jul 22, 2009 at 09:18:27AM +0800, Zhang Rui wrote:
> On Wed, 2009-07-22 at 07:49 +0800, Darrick J. Wong wrote:
> > Hi everyone,
> >
> > I noticed that section 10.4 of the ACPI 4.0 spec mentions exposing power meter
> > hardware via the DSDT.
>
> right.
>
> > Is anybody currently writing a Linux driver for that
> > power meter interface?
> >
> do you have an laptop with that implemented?
> can you attach the acpidump output please? :)

No, but I'm working on a prototype to send power use estimates to kvm guests.

Reading between the lines, you sort of imply that you are working on a driver?
If you are, we should coordinate efforts.

--D