| /* |
| * 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 |