platform_hardware_interfaces/wifi/1.1/IWifiChip.hal

/*
 * Copyright 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.hardware.wifi@1.1;

import @1.0::IWifiChip;
import @1.0::WifiStatus;

/**
 * Interface that represents a chip that must be configured as a single unit.
 * The HAL/driver/firmware will be responsible for determining which phy is used
 * to perform operations like NAN, RTT, etc.
 */
interface IWifiChip extends @1.0::IWifiChip {
  /**
   * Capabilities exposed by this chip.
   */
  enum ChipCapabilityMask : @1.0::IWifiChip.ChipCapabilityMask {
    /**
     * Set/Reset Tx Power limits.
     */
    SET_TX_POWER_LIMIT = 1 << 8,
    /**
     * Device to Device RTT.
     */
    D2D_RTT            = 1 << 9,
    /**
     * Device to AP RTT.
     */
    D2AP_RTT           = 1 << 10
  };

  /**
   * List of preset wifi radio TX power levels for different scenarios.
   * The actual power values (typically varies based on the channel,
   * 802.11 connection type, number of MIMO streams, etc) for each scenario
   * is defined by the OEM as a BDF file since it varies for each wifi chip
   * vendor and device.
   */
  enum TxPowerScenario : uint32_t {
    VOICE_CALL = 0,
  };

  /**
   * API to select one of the preset TX power scenarios.
   *
   * The framework must invoke this method with the appropriate scenario to let
   * the wifi chip change it's transmitting power levels.
   * OEM's should define various power profiles for each of the scenarios
   * above (defined in |TxPowerScenario|).
   *
   * @param scenario One of the preselected scenarios defined in
   *        |TxPowerScenario|.
   * @return status WifiStatus of the operation.
   *         Possible status codes:
   *         |WifiStatusCode.SUCCESS|,
   *         |WifiStatusCode.ERROR_WIFI_CHIP_INVALID|,
   *         |WifiStatusCode.ERROR_NOT_SUPPORTED|,
   *         |WifiStatusCode.NOT_AVAILABLE|,
   *         |WifiStatusCode.UNKNOWN|
   */
  selectTxPowerScenario(TxPowerScenario scenario) generates (WifiStatus status);

  /**
   * API to reset TX power levels.
   * This is used to indicate the end of the previously selected TX power
   * scenario and let the wifi chip fall back to the default power values.
   *
   * @return status WifiStatus of the operation.
   *         Possible status codes:
   *         |WifiStatusCode.SUCCESS|,
   *         |WifiStatusCode.ERROR_WIFI_CHIP_INVALID|,
   *         |WifiStatusCode.ERROR_NOT_SUPPORTED|,
   *         |WifiStatusCode.NOT_AVAILABLE|,
   *         |WifiStatusCode.UNKNOWN|
   */
  resetTxPowerScenario() generates (WifiStatus status);
};