ec/lenovo/h8/acpi: Support pulsing LEDLOGO on Haswell ThinkPads

The name LEDLOGO comes from schematics. It's the red indicator, embedded
in the dot of the 'i' of the ThinkPad logo on laptop's lid.

In vendor firmware, this led starts fading in-and-out, or, in other
words, pulsing, when laptop is put to S3. It helps to determine whether
the laptop is in S3 just by taking a look at the logo.

As of now, coreboot doesn't do anything with this particular indicator,
it's always in enabled (on) state, which is not very convenient.

This patch fixes it.

Tested on T440p.

Change-Id: I85fb69c8c1bed8635a1b31e9b8385c7036bb46dd
Signed-off-by: Evgeny Zinoviev <me@ch1p.io>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80437
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Reviewed-by: Nicholas Chin <nic.c3.14@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions