From 93d6ba0889d0247ac264172858ef57698c960464 Mon Sep 17 00:00:00 2001 From: Alexey Kharlamov Date: Tue, 9 Jan 2018 00:50:06 +0300 Subject: 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 Signed-off-by: Evgeny Zinoviev Change-Id: I2a90f9e9b32462b8a5e9bc8d3087ae0fea563ea5 Reviewed-on: https://review.coreboot.org/c/coreboot/+/23178 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Rudolph --- src/ec/lenovo/h8/acpi/thinkpad.asl | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/ec/lenovo/h8/acpi/thinkpad.asl') diff --git a/src/ec/lenovo/h8/acpi/thinkpad.asl b/src/ec/lenovo/h8/acpi/thinkpad.asl index 1997d08549..449fd6ee61 100644 --- a/src/ec/lenovo/h8/acpi/thinkpad.asl +++ b/src/ec/lenovo/h8/acpi/thinkpad.asl @@ -317,4 +317,8 @@ Device (HKEY) Store (WWAN, \_SB.PCI0.LPCB.EC.WWEB) } } + + #if IS_ENABLED(CONFIG_H8_HAS_BAT_TRESHOLDS_IMPL) + #include "thinkpad_bat_thresholds.asl" + #endif } -- cgit v1.2.3