tree e2f32fc447b6e949e17defb88506ce49f91e7030
parent 020f5a79bf32d46b01f6a333332b85f9bad03571
author Stefan Ott <stefan@ott.net> 1587590403 +0200
committer Alexander Couzens <lynxis@fe80.eu> 1590140933 +0000

mb/lenovo/t520: Add support for ThinkLight

With this patch, the ThinkLight on the ThinkPad T520 can be controlled
through the OS.  The same change was done for the ThinkPad X200 in
b45912f4: mb/lenovo/x200: Add support for ThinkLight

After applying this patch, the light can be controlled like this:

    echo on >/proc/acpi/ibm/light
    echo off >/proc/acpi/ibm/light

Or through sysfs at /sys/class/leds/tpacpi::thinklight

Unfortunately I do not own a T520 to test this.

Change-Id: Iffc5dd2f23ee4896da633c18cbbf22c9e448edf1
Signed-off-by: Stefan Ott <stefan@ott.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40718
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>