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Commit a26a6e08 authored by Roshan Pius's avatar Roshan Pius
Browse files

wifi: Add firmware mode controller 

This module will make the necessary calls to reconfigure the
driver/firmware in the required state.
The module assumes that the sysfs paths needed to be accessed has been
chowned to "wifi" at bootup in the device's .rc file.

Bug: 32018162
Test: Compiles
Change-Id: I827c5eb6b5b4a3810e912d4164dbc8ff0ef4d30c
parent 961e6255

wifi/1.0/default/Android.mk

+2 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ LOCAL_SRC_FILES := \ 
    wifi_ap_iface.cpp \

    wifi_chip.cpp \

    wifi_legacy_hal.cpp \

    wifi_mode_controller.cpp \

    wifi_nan_iface.cpp \

    wifi_p2p_iface.cpp \

    wifi_rtt_controller.cpp \
@@ -39,6 +40,7 @@ LOCAL_SHARED_LIBRARIES := \ 
    liblog \

    libnl \

    libutils \

    libwifi-hal \

    libwifi-system

LOCAL_WHOLE_STATIC_LIBRARIES := $(LIB_WIFI_HAL)

LOCAL_INIT_RC := android.hardware.wifi@1.0-service.rc

wifi/1.0/default/wifi_mode_controller.cpp

0 → 100644
+87 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2016 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.

 */



#include <android-base/logging.h>

#include <android-base/macros.h>

#include <private/android_filesystem_config.h>



#include "wifi_mode_controller.h"



using android::hardware::wifi::V1_0::IfaceType;

using android::wifi_hal::DriverTool;



namespace {

int convertIfaceTypeToFirmwareMode(IfaceType type) {

  int mode;

  switch (type) {

    case IfaceType::AP:

      mode = DriverTool::kFirmwareModeAp;

      break;

    case IfaceType::P2P:

      mode = DriverTool::kFirmwareModeP2p;

      break;

    case IfaceType::NAN:

      // NAN is exposed in STA mode currently.

      mode = DriverTool::kFirmwareModeSta;

      break;

    case IfaceType::STA:

      mode = DriverTool::kFirmwareModeSta;

      break;

  }

  return mode;

}

}



namespace android {

namespace hardware {

namespace wifi {

namespace V1_0 {

namespace implementation {

namespace mode_controller {



WifiModeController::WifiModeController() : driver_tool_(new DriverTool) {}



bool WifiModeController::isFirmwareModeChangeNeeded(IfaceType type) {

  return driver_tool_->IsFirmwareModeChangeNeeded(

      convertIfaceTypeToFirmwareMode(type));

}



bool WifiModeController::changeFirmwareMode(IfaceType type) {

  if (!driver_tool_->LoadDriver()) {

    LOG(ERROR) << "Failed to load WiFi driver";

    return false;

  }

  if (!driver_tool_->IsFirmwareModeChangeNeeded(

          convertIfaceTypeToFirmwareMode(type))) {

    LOG(ERROR) << "Failed to change firmware mode";

    return false;

  }

  return true;

}



bool WifiModeController::deinitialize() {

  if (!driver_tool_->UnloadDriver()) {

    LOG(ERROR) << "Failed to unload WiFi driver";

    return false;

  }

  return true;

}

}  // namespace mode_controller

}  // namespace implementation

}  // namespace V1_0

}  // namespace wifi

}  // namespace hardware

}  // namespace android

wifi/1.0/default/wifi_mode_controller.h

0 → 100644
+59 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2016 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.

 */



#ifndef WIFI_MODE_CONTROLLER_H_

#define WIFI_MODE_CONTROLLER_H_



#include <wifi_hal/driver_tool.h>



#include <android/hardware/wifi/1.0/IWifi.h>



namespace android {

namespace hardware {

namespace wifi {

namespace V1_0 {

namespace implementation {

namespace mode_controller {

/**

 * Class that encapsulates all firmware mode configuration.

 * This class will perform the necessary firmware reloads to put the chip in the

 * required state (essentially a wrapper over DriverTool).

 */

class WifiModeController {

 public:

  WifiModeController();



  // Checks if a firmware mode change is necessary to support the specified

  // iface type operations.

  bool isFirmwareModeChangeNeeded(IfaceType type);

  // Change the firmware mode to support the specified iface type operations.

  bool changeFirmwareMode(IfaceType type);

  // Unload the driver. This should be invoked whenever |IWifi.stop()| is

  // invoked.

  bool deinitialize();



 private:

  std::unique_ptr<wifi_hal::DriverTool> driver_tool_;

};



}  // namespace mode_controller

}  // namespace implementation

}  // namespace V1_0

}  // namespace wifi

}  // namespace hardware

}  // namespace android



#endif  // WIFI_MODE_CONTROLLER_H_