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/*
* 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 "wifi_hal/driver_tool.h"
#include <android-base/logging.h>
#include <private/android_filesystem_config.h>
#include "hardware_legacy/wifi.h"
namespace android {
namespace wifi_hal {
const int DriverTool::kFirmwareModeSta = WIFI_GET_FW_PATH_STA;
const int DriverTool::kFirmwareModeAp = WIFI_GET_FW_PATH_AP;
const int DriverTool::kFirmwareModeP2p = WIFI_GET_FW_PATH_P2P;
bool DriverTool::TakeOwnershipOfFirmwareReload() {
if (!wifi_get_fw_path(kFirmwareModeSta) &&
!wifi_get_fw_path(kFirmwareModeAp) &&
!wifi_get_fw_path(kFirmwareModeP2p)) {
return true; // HAL doesn't think we need to load firmware for any mode.
}
if (chown(WIFI_DRIVER_FW_PATH_PARAM, AID_WIFI, AID_WIFI) != 0) {
PLOG(ERROR) << "Error changing ownership of '" << WIFI_DRIVER_FW_PATH_PARAM
<< "' to wifi:wifi";
return false;
}
return true;
}
bool DriverTool::LoadDriver() {
return ::wifi_load_driver() == 0;
}
bool DriverTool::UnloadDriver() {
return ::wifi_unload_driver() == 0;
}
bool DriverTool::IsDriverLoaded() {
return ::wifi_unload_driver() != 0;
}
bool DriverTool::IsFirmwareModeChangeNeeded(int mode) {
return (wifi_get_fw_path(mode) != nullptr);
}
bool DriverTool::ChangeFirmwareMode(int mode) {
const char* fwpath = wifi_get_fw_path(mode);
if (!fwpath) {
return true; // HAL doesn't think we need to load firmware for this mode.
}
if (wifi_change_fw_path(fwpath) != 0) {
// Not all devices actually require firmware reloads, but
// failure to change the firmware path when it is defined is an error.
return false;
}
return true;
}
} // namespace wifi_hal
} // namespace android
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