Re: ACPI ALS Status ?

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On Sun, Nov 6, 2011 at 11:16 PM, Len Brown <lenb@xxxxxxxxxx> 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

-- 
Corentin Chary
http://xf.iksaif.net
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