From fa93854f7a7ed63d054405bf3779247d5300edd3 Mon Sep 17 00:00:00 2001 From: Ognjen Galic Date: Wed, 7 Feb 2018 15:58:13 +0100 Subject: battery: Add the battery hooking API This is a patch that implements a generic hooking API for the generic ACPI battery driver. With this new generic API, drivers can expose platform specific behaviour via sysfs attributes in /sys/class/power_supply/BATn/ in a generic way. A perfect example of the need for this API are Lenovo ThinkPads. Lenovo ThinkPads have a ACPI extension that allows the setting of start and stop charge thresholds in the EC and battery firmware via ACPI. The thinkpad_acpi module can use this API to expose sysfs attributes that it controls inside the ACPI battery driver sysfs tree, under /sys/class/power_supply/BATN/. The file drivers/acpi/battery.h has been moved to include/acpi/battery.h and the includes inside ac.c, sbs.c, and battery.c have been adjusted to reflect that. When drivers hooks into the API, the API calls add_battery() for each battery in the system that passes it a acpi_battery struct. Then, the drivers can use device_create_file() to create new sysfs attributes with that struct and identify the batteries for per-battery attributes. Signed-off-by: Ognjen Galic Signed-off-by: Rafael J. Wysocki --- drivers/acpi/ac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/acpi/ac.c') diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index 47a7ed557bd6..2d8de2f8c1ed 100644 --- a/drivers/acpi/ac.c +++ b/drivers/acpi/ac.c @@ -33,7 +33,7 @@ #include #include #include -#include "battery.h" +#include #define PREFIX "ACPI: " -- cgit v1.2.3