[coreboot-gerrit] Change in coreboot[master]: mb/lenovo/x200: Add support for ThinkLight

[Stefan Ott (Code Review)]

Hello build bot (Jenkins), Paul Menzel, Angel Pons, Michael Niewöhner, Alexander Couzens, Patrick Rudolph,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/40620

to look at the new patch set (#8).

Change subject: mb/lenovo/x200: Add support for ThinkLight
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mb/lenovo/x200: Add support for ThinkLight

With this patch, the ThinkLight on the ThinkPad X200 can be controlled
through the OS.  This was initially done for the X201 in f63fbdb6:
mb/lenovo/x201: 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

I have tested it on an X200 with Kernel 5.4 and it seems to work fine.

Change-Id: I14752ab33484122248959517e73f96b6783b1f65
Signed-off-by: Stefan Ott 
---
M src/mainboard/lenovo/x200/dsdt.asl
1 file changed, 2 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/20/40620/8