powershare: add default implementation

Change-Id: If14d0e2038c604d6da5e383df638fd138e7aea26

powershare/1.0/default/Android.bp

@@ -0,0 +1,21 @@
+cc_binary {
+    name: "vendor.lineage.powershare@1.0-service.default",
+    defaults: [
+        "hidl_defaults",
+        "powershare_defaults",
+    ],
+    init_rc: ["vendor.lineage.powershare@1.0-service.default.rc"],
+    vintf_fragments: ["vendor.lineage.powershare@1.0-service.default.xml"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: [
+        "service.cpp",
+        "PowerShare.cpp",
+    ],
+    shared_libs: [
+        "libbase",
+        "libhidlbase",
+        "libutils",
+        "vendor.lineage.powershare@1.0",
+    ],
+}

powershare/1.0/default/PowerShare.cpp

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2024 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "PowerShare.h"
+
+#include <android-base/file.h>
+#include <android-base/strings.h>
+
+using ::android::base::ReadFileToString;
+using ::android::base::WriteStringToFile;
+
+namespace vendor {
+namespace lineage {
+namespace powershare {
+namespace V1_0 {
+namespace implementation {
+
+Return<bool> PowerShare::isEnabled() {
+    std::string value;
+
+    if (!ReadFileToString(POWERSHARE_PATH, &value)) {
+        LOG(ERROR) << "Failed to read current powershare value";
+        return false;
+    }
+
+    value = android::base::Trim(value);
+
+    return value == POWERSHARE_ENABLED;
+}
+
+Return<bool> PowerShare::setEnabled(bool enable) {
+    const auto& value = enable ? POWERSHARE_ENABLED : POWERSHARE_DISABLED;
+    return WriteStringToFile(value, POWERSHARE_PATH, true);
+}
+
+Return<uint32_t> PowerShare::getMinBattery() {
+    return 0;
+}
+
+Return<uint32_t> PowerShare::setMinBattery(uint32_t /*minBattery*/) {
+    return getMinBattery();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace powershare
+}  // namespace lineage
+}  // namespace vendor

powershare/1.0/default/PowerShare.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef VENDOR_LINEAGE_POWERSHARE_V1_0_POWERSHARE_H
+#define VENDOR_LINEAGE_POWERSHARE_V1_0_POWERSHARE_H
+
+#define LOG_TAG "vendor.lineage.powershare@1.0-service.default"
+
+#include <android-base/logging.h>
+
+#include <vendor/lineage/powershare/1.0/IPowerShare.h>
+
+namespace vendor {
+namespace lineage {
+namespace powershare {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::sp;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+
+class PowerShare : public IPowerShare {
+  public:
+    Return<bool> isEnabled() override;
+    Return<bool> setEnabled(bool enable) override;
+    Return<uint32_t> getMinBattery() override;
+    Return<uint32_t> setMinBattery(uint32_t minBattery) override;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace powershare
+}  // namespace lineage
+}  // namespace vendor
+
+#endif  // VENDOR_LINEAGE_POWERSHARE_V1_0_POWERSHARE_H

powershare/1.0/default/service.cpp

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2024 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "PowerShare.h"
+
+#include <hidl/HidlTransportSupport.h>
+
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+using android::sp;
+
+using vendor::lineage::powershare::V1_0::IPowerShare;
+using vendor::lineage::powershare::V1_0::implementation::PowerShare;
+
+int main() {
+    sp<IPowerShare> powerShareService = new PowerShare();
+
+    configureRpcThreadpool(1, true /*callerWillJoin*/);
+
+    if (powerShareService->registerAsService() != android::OK) {
+        LOG(ERROR) << "Can't register PowerShare HAL service";
+        return 1;
+    }
+
+    joinRpcThreadpool();
+
+    return 0; // should never get here
+}

powershare/1.0/default/vendor.lineage.powershare@1.0-service.default.rc

@@ -0,0 +1,4 @@
+service vendor.powershare-hal-1-0 /vendor/bin/hw/vendor.lineage.powershare@1.0-service.default
+    class hal
+    user system
+    group system

powershare/1.0/default/vendor.lineage.powershare@1.0-service.default.xml

@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>vendor.lineage.powershare</name>
+        <transport>hwbinder</transport>
+        <version>1.0</version>
+        <interface>
+            <name>IPowerShare</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>