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Date: Tue, 19 Feb 2013 21:20:16 +0200 From: "Westerberg, Mika" <mika.westerberg@...el.com> To: "Pallala, Ramakrishna" <ramakrishna.pallala@...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 On Tue, Feb 19, 2013 at 08:59:29PM +0200, Pallala, Ramakrishna wrote: > > > 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. Yes, it was just an example. You can have your own custom method for that, lets say: BLAH() that then returns whatever you need. > 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. _DSM is also an option, yes. > And I believe this data format can be anything and private to the device? > Can you confirm? Yes. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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