Am 10.09.2012 11:27, schrieb Corentin Chary: > On Sun, Sep 9, 2012 at 8:31 PM, Alexander Holler <holler@xxxxxxxxxxxxx> wrote: >> Hello, >> >> I'm searching some information about how to read the values from the >> light sensor found on some Samsung laptops. >> >> Does anyone have any information about how to access the light sensor? >> If I would find such information, I would (try) to write a driver (or >> enhance samsung-laptop), at least to read the values and maybe something >> to adjust the keyboard- and/or the lcd-backlight (on startup and maybe >> dynamically at runtime). >> >> Regards, >> >> Alexander > > Hello Alexander, > The light sensor can be used (on mine at least), but nobody had the > time to write (rebase) the driver for it. > Check these discussions: > http://search.gmane.org/?query=ACPI+light+sensor&group=gmane.linux.acpi.devel > > Basically, it's a standard ACPI light sensor, there was a driver for > it, but it should use another subsystem, and nobody did the work so Thanks a lot for that hint. I've just booted an 3.5.3: ---- laptopah ~ # cat /sys/class/als/acpi_als0/illuminance 3230 ---- Only a few modifications on the 2 patches from Zhang Rui were necessary to build the driver for the als-acpi-device. > far :). I'll happy to review if you have the time to do that. I will have a look at the threads for those 2 patches and will check if I can modify those patches for a next try for inclusion into the mainline kernel (in the next weeks, as I will find time, I'm new to the acpi-stuff in the kernel). Regards, Alexander -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
