On Tue 2009-09-01 16:39:36, Zhang Rui wrote:
> On Tue, 2009-09-01 at 16:13 +0800, Pavel Machek wrote:
> > Hi!
> >
> > > ACPI spec defines ACPI Ambient Light Sensor device (hid ACPI0008),
> > > which provides a standard interface by which the OS may query properties
> > > of the ambient light environment the system is currently operating in,
> > > as well as the ability to detect meaningful changes in these values when
> > > the environment changes.
> >
> > > +struct acpi_als {
> > > + struct acpi_device *device;
> > > + struct als_device *als_sys;
> > > + int illuminance;
> > > + int chromaticity;
> > > + int temperature;
> > > + int polling;
> > > + int count;
> > > + struct als_mapping *mappings;
> > > +};
> >
> > chromaticity is write-only variable.
>
> > I believe you can drop it and
> > associted code.
> >
> > temperature ditto. Drop from this version?
> >
> > polling ditto. Drop from this version?
> >
> ???color temperature, chromaticity and polling are three optional features
> defined in the ACPI spec, which are not supported yet in the ACPI ALS
> driver right now.
>
> I think it's okay to add the code first and then generate some
> incremental patches to enable these features once we found such kind of
> platforms.
I'd avoid adding dead code to ease review etc... You can add it back
easily when it actually has users...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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