sm8250-common: Implement vendor.lineage.powershare@1.0 HAL

powershare/PowerShare.cpp

@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2020 The LineageOS 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.
+ */
+
+#define LOG_TAG "PowerShareService"
+
+#include "PowerShare.h"
+#include <hidl/HidlTransportSupport.h>
+#include <fstream>
+
+namespace vendor {
+namespace lineage {
+namespace powershare {
+namespace V1_0 {
+namespace implementation {
+
+#define WIRELESS_TX_ENABLE_PATH "/proc/wireless/enable_tx"
+
+/*
+ * Write value to path and close file.
+ */
+template <typename T>
+static void set(const std::string& path, const T& value) {
+    std::ofstream file(path);
+    file << value;
+}
+
+template <typename T>
+static T get(const std::string& path, const T& def) {
+    std::ifstream file(path);
+    T result;
+
+    file >> result;
+    return file.fail() ? def : result;
+}
+
+Return<bool> PowerShare::isEnabled() {
+    return get<std::string>(WIRELESS_TX_ENABLE_PATH, "disable") != "disable";
+}
+
+Return<bool> PowerShare::setEnabled(bool enable) {
+    set(WIRELESS_TX_ENABLE_PATH, enable ? 1 : 0);
+
+    return isEnabled();
+}
+
+Return<uint32_t> PowerShare::getMinBattery() {
+    return 0;
+}
+
+Return<uint32_t> PowerShare::setMinBattery(uint32_t) {
+    return getMinBattery();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace powershare
+}  // namespace lineage
+}  // namespace vendor