On Sat, Dec 3, 2011 at 10:43 AM, Corentin Chary <corentin.chary@xxxxxxxxx> wrote: > On Sun, Nov 6, 2011 at 11:51 PM, 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. > > I just found some time to try the latest patch series I could found on > gmane (v6 I think). > Here are the results: > > $ uname -s -r > Linux 3.0.0-14-generic > > $ tree -L 1 /sys/class/als/acpi_als0/ > /sys/class/als/acpi_als0/ > ├── device -> ../../../LNXSYSTM:00/device:00/PNP0A08:00/device:02/PNP0C09:00/ACPI0008:00 > ├── display_adjustment > ├── illuminance > ├── power > ├── subsystem -> ../../../../class/als > └── uevent > > // light off > $ cat display_adjustment > 23% > $ cat illuminance > 7 > > // light on > $ cat display_adjustment > 74% > $ cat illuminance > 368 > > // finger on sensor > $ cat display_adjustment > 7% > $ cat illuminance > 1 > > So, it works perfectly, and since I've just added keyboard backlight > support in samsung-laptop, that would be the last (kernel) bit to > enable automagic screen/keyboard backlight :). Hi, Any plan to revive this driver for 3.4 or 3.5 ? Thanks, -- Corentin Chary http://xf.iksaif.net -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
