XO-1.5 ACPI ebook switch

Mitch Bradley wmb at laptop.org
Sat Nov 20 02:01:16 EST 2010

Does the ACPI spec say anything about an ebook switch?  Lid switch, 
power button and sleep button are standard ACPI thingys, but I'm not 
sure there is an ACPI standard for other kinds of buttons.  A search of 
the ACPI spec for "button" didn't find anything other than power and sleep.

ACPI, in general, tends to be about enumerating specific cases instead 
of creating a general purpose framework.

On 11/19/2010 5:53 AM, Daniel Drake wrote:
> Hi,
> I'm looking at getting the XO-1.5 ACPI kernel changes upstream.
> Right now, the ebook switch has its own kernel driver for the XO15EBK
> HID, it seems like a design decision was taken in the ACPI DSDT that
> we should invent our own class instead of using the standard ACPI
> button one.
> However, the DSDT also exposes the lid and power switches as standard
> ACPI switches, which get driven by the standard Linux driver without
> complication.
> Can anyone recall why the ebook switch is its own class?
> Thanks,
> Daniel

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