en Copyright 2015 Java http://172.16.0.5:8080/history/linux-6.15/Documentation/ABI/testing/sysfs-class-power-surface#167f77f7 power: supply: Add battery driver for Surface Aggregator ModuleOn newer Microsoft Surface models (specifically 7th-generation, i.e.Surface Pro 7, Surface Book 3, Surface Laptop 3, and Surface Laptop Go),battery and AC status/information is no longer handled via standard ACPIdevices, but instead directly via the Surface System Aggregator Module(SSAM), i.e. the embedded controller on those devices.While on previous generation models, battery status is also handled viaSSAM, an ACPI shim was present to translate the standard ACPI batteryinterface to SSAM requests. The SSAM interface itself, which is modeledclosely after the ACPI interface, has not changed.This commit introduces a new SSAM client device driver to supportbattery status/information via the aforementioned interface on saidSurface models. It is in parts based on the standard ACPI batterydriver.Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com> List of files: /linux-6.15/Documentation/ABI/testing/sysfs-class-power-surface Mon, 05 Apr 2021 23:41:25 +0000 Maximilian Luz <luzmaximilian@gmail.com>