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| author | Ognjen Galic <smclt30p@gmail.com> | 2018-02-07 15:58:13 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-02-21 23:27:13 +0100 |
| commit | fa93854f7a7ed63d054405bf3779247d5300edd3 (patch) | |
| tree | fa4d31fbd9f2946d683a0534b456be3c68b6ad03 /drivers/acpi/ac.c | |
| parent | Linux 4.16-rc2 (diff) | |
| download | linux-fa93854f7a7ed63d054405bf3779247d5300edd3.tar.xz linux-fa93854f7a7ed63d054405bf3779247d5300edd3.zip | |
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 <smclt30p@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/ac.c')
| -rw-r--r-- | drivers/acpi/ac.c | 2 |
1 files changed, 1 insertions, 1 deletions
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 <linux/platform_device.h> #include <linux/power_supply.h> #include <linux/acpi.h> -#include "battery.h" +#include <acpi/battery.h> #define PREFIX "ACPI: " |