linux-kernel - RE: How to populate Battery information through ACPI tables

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Date:	Tue, 19 Feb 2013 18:59:29 +0000
From:	"Pallala, Ramakrishna" <ramakrishna.pallala@...el.com>
To:	"Westerberg, Mika" <mika.westerberg@...el.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Zhang, Rui" <rui.zhang@...el.com>
Subject: RE: How to populate Battery information through ACPI tables

> > Mika, I want to populate this characterization data as device
> > specific/custom data which could be anything And may not be entirely
> > related to battery. Is this is possible?
> 
> Yes, for example you could have a custom ACPI method with your device which
> then returns this information.
> 
> See for example chapter 10.2.2.1 from the ACPI spec. It describes _BIF method
> that returns some battery data to the caller.

Mika, _BIF method returns battery data/struct which is defined Table. 10-233.

If I want to pass some device specific data seems like I can use _DSM(9.14.1) method and pass custom /device specific data to the driver.
And I believe this data format can be anything and private to the device? Can you confirm?

Thanks,
Ram
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