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Ambient Light Sensor?

DISCUSSION Len Brown 4 participants 4 messages Mar 19, 2007 – Mar 20, 2007 ACPI

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Len Brown

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Has anybody seen ACPI-based ambient light sensor support on a commercial system?

You'd recognize it by a device with PNPid ACPI0008 exported via the AML device tree.

I've seen it on an Intel Capell Valley CRB, but I was wondering if anybody is using it in the "real world" yet.

I've seen just the dmesg from a MacBook Pro on the web suggesting that system exports ACPI0008:
http://www.uwsg.iu.edu/hypermail/linux/kernel/0703.0/1475.html

thanks,
-Len

#1 lore raw
Quoted 10 lines · Len Brown

Has anybody seen ACPI-based ambient light sensor support on a commercial system?

You'd recognize it by a device with PNPid ACPI0008 exported via the AML device tree.

I've seen it on an Intel Capell Valley CRB, but I was wondering if anybody is using it in the "real world" yet.

I've seen just the dmesg from a MacBook Pro on the web suggesting that system exports ACPI0008:
http://www.uwsg.iu.edu/hypermail/linux/kernel/0703.0/1475.html

Right. Under OSX, it uses it to adjust the keyboard backlight. (It may also do something fancy wrt gamma correction with the
built-in webcam)

Dave

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http://www.codemonkey.org.uk
#2 lore raw

Ambient light sensors are on the Dell Latitude D820, a buddy of mine purchased one not to long ago.

frm

Quoted 19 lines · Dave Jones
Quoted 6 lines · Len Brown

Has anybody seen ACPI-based ambient light sensor support on a commercial system?

You'd recognize it by a device with PNPid ACPI0008 exported via the AML device tree.

Quoted 6 lines

I've seen it on an Intel Capell Valley CRB, but I was wondering if anybody is using it in the "real world" yet.

I've seen just the dmesg from a MacBook Pro on the web suggesting that system exports ACPI0008:
http://www.uwsg.iu.edu/hypermail/linux/kernel/0703.0/1475.html

Right. Under OSX, it uses it to adjust the keyboard backlight. (It may also do something fancy wrt gamma correction with the
built-in webcam)

Dave

Signature · 7 lines
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