// Copyright 2013 The ChromiumOS Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

syntax = "proto2";

option optimize_for = LITE_RUNTIME;

package power_manager;
option go_package = "go.chromium.org/chromiumos/system_api/power_manager_proto";

// Power supply status sent from powerd to Chrome.
message PowerSupplyProperties {
  // For any of these power sources, the system may be consuming power at a high
  // enough rate that the battery is discharging rather than charging; see
  // BatteryState. See the PowerSource submessage's |type| field for more
  // details about the active power source.
  enum ExternalPower {
    // AC/line/mains or USB PD power is connected. This is typically the
    // highest-power source that can be attached to the system.
    AC = 0;

    // A low-power USB source (SDP, DCP, CDP, or ACA) is connected.
    USB = 1;

    // No external power source is connected.
    DISCONNECTED = 2;

    // A low voltage source is connected, but the system is unable to draw
    // power from this source because the voltage is low.
    // This only happens on systems without a buck-boost charger topology.
    LOW_VOLTAGE_NO_CHARGE = 4;

    // Next value to use: 5
  }

  enum BatteryState {
    // The battery is full or close to full.
    FULL = 0;

    // The battery is being charged but is not yet full.
    CHARGING = 1;

    // The battery is discharging. Note that an external power source may be
    // connected but not supplying enough power to offset the system's
    // instantaneous power consumption. This state is also used if the battery
    // is neither charging nor discharging (i.e. current is zero) in a non-full
    // state, which may indicate a battery defect.
    DISCHARGING = 2;

    // The system doesn't have a battery.
    NOT_PRESENT = 3;

    // Next value to use: 4
  }

  // Details about a potential source of power to the system.
  message PowerSource {
    enum Port {
      // The location of the port is unknown, or there's only one port.
      UNKNOWN = 0;

      // Various positions on the device. The first word describes the side of
      // the device where the port is located while the second clarifies the
      // position. For example, LEFT_BACK means the farthest-back port on the
      // left side, while BACK_LEFT means the leftmost port on the back of the
      // device.
      LEFT = 1;
      RIGHT = 2;
      BACK = 3;
      FRONT = 4;
      LEFT_FRONT = 5;
      LEFT_BACK = 6;
      RIGHT_FRONT = 7;
      RIGHT_BACK = 8;
      BACK_LEFT = 9;
      BACK_RIGHT = 10;

      // Next value to use: 11
    }

    enum Type {
      // Unspecified type.
      OTHER = 0;

      // Dedicated charger. Typically single-purpose and non-USB (e.g. barrel
      // jack plugs). Corresponds to kernel-reported type "Mains". This source
      // is reported by the ACPI driver and may also appear (along with a USB_PD
      // source) on Type-C-only systems if the ACPI driver is present.
      MAINS = 1;

      // USB Type-C, including dedicated Type-C chargers. Typically >= 7.5W.
      // Corresponds to kernel-reported types "USB_C", "USB_PD", "USB_PD_DRP",
      // and "BrickID".
      USB_C = 2;

      // USB Battery Charging r1.2. Typically <= 7.5W. Corresponds to
      // kernel-reported types "USB", "USB_ACA", "USB_CDP", and "USB_DCP".
      USB_BC_1_2 = 3;

      // Next value to use: 4
    }

    // Opaque ID corresponding to the device. Do not use this for any purpose
    // beyond comparisons with |external_power_source_id| or as an argument to
    // powerd's SetPowerSource D-Bus method.
    optional string id = 1;

    // The charging port to which this power source is connected.
    optional Port port = 7;

    // Power source type.
    optional Type type = 8;

    // Raw strings read from |manufacturer| and |model_name| files in sysfs.
    optional string manufacturer_id = 4;
    optional string model_id = 5;

    // Maximum power this source is capable of delivering, in watts.
    optional double max_power = 6;

    // True if the power source will automatically deliver charge to the system
    // when connected (assuming there isn't another |active_by_default| source
    // doing so). If false, the source will not deliver charge unless requested
    // to do so by the user.
    optional bool active_by_default = 3;

    // Next ID to use: 9
  }

  // Current state of the external power source.
  optional ExternalPower external_power = 14;

  // ID of the PowerSource that is currently providing power to the system.
  optional string external_power_source_id = 17;

  // Currently-connected external power sources.
  repeated PowerSource available_external_power_source = 18;

  // Current state of the battery.
  optional BatteryState battery_state = 15;

  // Estimated battery charge as a percent of its total capacity, in the
  // range [0.0, 100.0]. Unset if a battery isn't present.
  optional double battery_percent = 7 [default = -1.0];

  // Estimated time until the battery is empty, in seconds, or zero if the
  // battery isn't discharging. -1 if the estimated time would be huge
  // (e.g. because the current is zero or close to zero). Unset if a battery
  // isn't present.
  optional int64 battery_time_to_empty_sec = 5;

  // Estimated time until the battery is full, in seconds, or zero if the
  // battery isn't charging. -1 if the estimated time would be huge (e.g.
  // because the current is zero or close to zero). Contains the best estimate
  // for when the battery will be full when Adaptive Charging is delaying
  // charge. If there is no current estimate for when Adaptive Charging will
  // finish, the value is zero. Unset if a battery isn't present.
  optional int64 battery_time_to_full_sec = 6;

  // True when |battery_time_to_*| can't be trusted, e.g. because the power
  // source just changed. Unset if a battery isn't present.
  optional bool is_calculating_battery_time = 12 [default = false];

  // The battery discharge rate measured in W. Positive if the battery is being
  // discharged, negative if it's being charged, or unset if a battery isn't
  // present.
  optional double battery_discharge_rate = 16;

  // True if it is possible for some connected devices to function as either
  // sources or sinks (i.e. to either deliver or receive charge).
  optional bool supports_dual_role_devices = 19;

  // Current battery voltage level.
  optional double battery_voltage = 20;

  // Battery manufacturer reported in sysfs as either "manufacturer" or
  // "vendor". Ex.: "SIMPLO"
  optional string battery_vendor = 21;

  // Battery cycle count representing the total number of times all the
  // battery's power has been used.
  optional int64 battery_cycle_count = 22;

  // Battery serial number reported in sysfs.
  optional string battery_serial_number = 23;

  // Battery design capacity measured in ampere-hours (Ah).
  optional double battery_charge_full_design = 24;

  // Battery full capacity measured in ampere-hours (Ah).
  optional double battery_charge_full = 25;

  // Battery voltage min design measured in V.
  optional double battery_voltage_min_design = 26;

  // Current battery charge right now, measured in ampere-hours (Ah).
  optional double battery_charge = 27;

  // Battery model name reported by |model_name|.
  optional string battery_model_name = 28;

  // Battery current as of now, measured in amperes (A).
  optional double battery_current = 29;

  // Battery technology read from sysfs.
  optional string battery_technology = 30;

  // Battery status read from sysfs.
  optional string battery_status = 31;

  // The device's preferred minimum external power input in watts (W). When
  // requesting the user use a higher-power external power source, this value
  // can be displayed.
  optional double preferred_minimum_external_power = 32;

  // Indicates if the system supports Adaptive Charging required functionality.
  optional bool adaptive_charging_supported = 33 [default = false];

  // Indicates whether charging to full is delayed by adaptive charging. If so,
  // |battery_time_to_full_sec| indicates the time until the battery is planned
  // to be fully charged. The planned time to fully charge the battery may
  // change over time based on predictions from adaptive battery.
  optional bool adaptive_delaying_charge = 34 [default = false];

  // Indicates if Adaptive Charging is currently allowed by its heuristic, which
  // disables Adaptive Charging if the charging behavior of the user won't
  // benefit from the feature.
  // Unused unless Adaptive Charging is supported on the system.
  optional bool adaptive_charging_heuristic_enabled = 35;

  // Indicates whether charging is limited by Charge Limit, which prevents
  // charging over a default battery percentage of 80%. Percentage is
  // configurable via |PowerManagementPolicy::adaptive_charging_hold_percent|.
  // Set to true if the battery percentage is close to or above the limit
  // (defined in the code as greater than or equal to
  // |PowerManagementPolicy::adaptive_charging_hold_percent| -
  // |PowerManagementPolicy::adaptive_charging_hold_delta_percent| - 1) and
  // Charge Limit is enabled.
  optional bool charge_limited = 36;

  // Next ID to use: 37
}