ec/lenovo/h8: Implement ACPI methods to set battery thresholds
There are two known reverse-engineered ways to manage battery
thresholds.
This patch implements them and adds a way to enable them for
different mainboards.
Tested on W530 with 4.18.3-gentoo kernel and X220 with 4.20.11.
Works fine with new Linux userspace API for controlling battery
thresholds, available since 4.17.
(/sys/class/power_supply/BAT0/charge_(start|stop)_threshold).
The new API is supported by TLP (you might need to set NATACPI_ENABLE=1
in /etc/tlp.conf).
tpacpi-bat works fine too.
Signed-off-by: Alexey Kharlamov <der@2-47.ru>
Signed-off-by: Evgeny Zinoviev <me@ch1p.com>
Change-Id: I2a90f9e9b32462b8a5e9bc8d3087ae0fea563ea5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/23178
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
diff --git a/src/mainboard/lenovo/t400/Kconfig b/src/mainboard/lenovo/t400/Kconfig
index 57e31f2..9f94051 100644
--- a/src/mainboard/lenovo/t400/Kconfig
+++ b/src/mainboard/lenovo/t400/Kconfig
@@ -9,6 +9,7 @@
select SOUTHBRIDGE_INTEL_I82801IX
select EC_LENOVO_PMH7
select EC_LENOVO_H8
+ select H8_HAS_BAT_TRESHOLDS_IMPL
select H8_DOCK_EARLY_INIT
select BOARD_ROMSIZE_KB_8192
select DRIVERS_GENERIC_IOAPIC