Re: ACPI ALS Status ?

[Zhang Rui <rui.zhang@intel.com>]

On 日, 2012-05-20 at 15:09 +0200, Corentin Chary wrote:
> On Mon, Mar 5, 2012 at 10:12 AM, Corentin Chary
> <corentin.chary@gmail.com> wrote:
> > On Sun, Nov 6, 2011 at 11:16 PM, Len Brown <lenb@kernel.org> wrote:
> >>> I was looking at the DSDT of a new samsung laptop (I can send you the
> >>> output of acpidump if interested), and it export a standard ACPI ALS
> >>> device. So, it's actually great to see vendor using that, but it seems
> >>> that the series adding support for that and sent back in 2009 is not
> >>> available in the kernel. I'd really like to use my the ALS, what's the
> >>> current status of the driver ? Still blocked because we don't have a
> >>> generic sysfs class ? If yes, can't we just use a non-standard
> >>> interface ? It would still be better than no driver at all.
> >>
> >> Yes, I think ACPI ALS support has been waiting for hardware to justify
> >> its existence.
> >>
> >> When it first entered the spec, we were excited to see it was present
> >> in some high-end laptops, but IIR on closer examination the AML turned
> >> out to be dummy code.
> >>
> >> If you can verify that your Samsung really does implement ACPI ALS,
> >> then that is all we need to stumble forward.
> >>
> >> thanks,
> >> -Len Brown, Intel Open Source Technology Center
> >
> > Hello,
> >
> > As stated in my previous mails, the implementation on this laptop is
> > perfectly functional,  and since Windows 7 seems to be able to use
> > ACPI ALS nativelly [1] I suspect new (high end ?) laptop will all
> > support that.
> > Is there any plan to revive this driver for 3.4 or 3.5 ? Should
> > someone repost the last version of the previous patchset for
> > discussion ?
> > And no, on this laptop ALS is definitively not a gadget.
> >
> > Thanks,
> >
> > - http://download.microsoft.com/download/3/0/2/3027D574-C433-412A-A8B6-5E0A75D5B237/ambient-light-sensors.docx
> 
> Adding more people that were interested in the previous discussion.
> What was the exact status of the als class ? Rui Zhang are you still
> interested in this ?
> Thanks,
> 
well, I need some time to get updated about this.
Say I'm not sure if we still want to introduce an ALS class or we need
to use drivers/staging/iio/ instead, today.

BTW, you own this laptop, right? Can you send me the model name of this
laptop and its acpidump output?

thanks,
rui


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