linux-kernel - Re: [PATCH 2/2] acpi_power_meter: hwmon driver for ACPI 4.0 power meters

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Date:	Mon, 3 Aug 2009 13:48:18 -0700
From:	"Darrick J. Wong" <djwong@...ibm.com>
To:	ykzhao <yakui.zhao@...el.com>
Cc:	Len Brown <lenb@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	lm-sensors <lm-sensors@...sensors.org>,
	linux-acpi <linux-acpi@...r.kernel.org>,
	"Zhang, Rui" <rui.zhang@...el.com>
Subject: Re: [PATCH 2/2] acpi_power_meter: hwmon driver for ACPI 4.0 power
	meters

On Mon, Jul 27, 2009 at 09:44:27AM +0800, ykzhao wrote:
> On Sat, 2009-07-25 at 08:43 +0800, Darrick J. Wong wrote:
> > This driver exposes ACPI 4.0 compliant power meters as hardware monitoring
> > devices.
> It seems OK to me. But it seems that some attributes can't be obtained
> by using the hwmon sys I/F.
>    a. Can we add a sys I/F that can exports the Power meter capability?
> display all the content of _PMC as what we have done in battery

Are you talking about all 17 fields of the _PMC return value?  Or specifically
the feature bit field "Supported Capabilities"?  The feature bits control
whether or not the corresponding sysfs attributes even show up, and the other
fields (except the string data) are all there.  I suppose it would be useful to
display the OEM data too...

>    b. Add a sys I/F that displays the name of device list measured by
> the power meter if there exists the _PMD object.

As soon as I figure out how to do that. :)

Sorry for the slow response as I was mountain climbing = no Internet.

--D
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