On Mon, May 21, 2012 at 3:03 AM, Zhang Rui <rui.zhang@xxxxxxxxx> wrote: > 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@xxxxxxxxx> wrote: >> > 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 >> >> 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. As long as "display_adjustment" is still reported correctly... > BTW, you own this laptop, right? Yep > Can you send me the model name of this > laptop and its acpidump output? Done, basically it's a "Samsung Series 9" but you will get more informations from dmidecode. Note that as I said, windows 7 handle ACPI ALS out the box (http://download.microsoft.com/download/3/0/2/3027D574-C433-412A-A8B6-5E0A75D5B237/ambient-light-sensors.docx), so expect more laptop in a short future. Thanks ! -- Corentin Chary http://xf.iksaif.net
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