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-Kernel driver power_meter
-=========================
-
-This driver talks to ACPI 4.0 power meters.
-
-Supported systems:
- * Any recent system with ACPI 4.0.
- Prefix: 'power_meter'
- Datasheet: http://acpi.info/, section 10.4.
-
-Author: Darrick J. Wong
-
-Description
------------
-
-This driver implements sensor reading support for the power meters exposed in
-the ACPI 4.0 spec (Chapter 10.4). These devices have a simple set of
-features--a power meter that returns average power use over a configurable
-interval, an optional capping mechanism, and a couple of trip points. The
-sysfs interface conforms with the specification outlined in the "Power" section
-of Documentation/hwmon/sysfs-interface.
-
-Special Features
-----------------
-
-The power[1-*]_is_battery knob indicates if the power supply is a battery.
-Both power[1-*]_average_{min,max} must be set before the trip points will work.
-When both of them are set, an ACPI event will be broadcast on the ACPI netlink
-socket and a poll notification will be sent to the appropriate
-power[1-*]_average sysfs file.
-
-The power[1-*]_{model_number, serial_number, oem_info} fields display arbitrary
-strings that ACPI provides with the meter. The measures/ directory contains
-symlinks to the devices that this meter measures.
-
-Some computers have the ability to enforce a power cap in hardware. If this is
-the case, the power[1-*]_cap and related sysfs files will appear. When the
-average power consumption exceeds the cap, an ACPI event will be broadcast on
-the netlink event socket and a poll notification will be sent to the
-appropriate power[1-*]_alarm file to indicate that capping has begun, and the
-hardware has taken action to reduce power consumption. Most likely this will
-result in reduced performance.
-
-There are a few other ACPI notifications that can be sent by the firmware. In
-all cases the ACPI event will be broadcast on the ACPI netlink event socket as
-well as sent as a poll notification to a sysfs file. The events are as
-follows:
-
-power[1-*]_cap will be notified if the firmware changes the power cap.
-power[1-*]_interval will be notified if the firmware changes the averaging
-interval.