eqs: Implement vendor.lineage.powershare@1.0 HAL

Change-Id: I8022ac47411369f3ede969417fd46e08fb984e24

device.mk

@@ -86,6 +86,10 @@ PRODUCT_PACKAGES += \
 PRODUCT_COPY_FILES += \
     frameworks/native/data/etc/android.hardware.nfc.hcef.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.hardware.nfc.hcef.xml
 
+# PowerShare
+PRODUCT_PACKAGES += \
+    vendor.lineage.powershare@1.0-service.eqs
+
 # Sensors
 PRODUCT_PACKAGES += \
     sensors.eqs

powershare/Android.bp

@@ -0,0 +1,18 @@
+cc_binary {
+    name: "vendor.lineage.powershare@1.0-service.eqs",
+    defaults: ["hidl_defaults"],
+    init_rc: ["vendor.lineage.powershare@1.0-service.eqs.rc"],
+    vintf_fragments: ["vendor.lineage.powershare@1.0-service.eqs.xml"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: [
+        "service.cpp",
+        "PowerShare.cpp",
+    ],
+    shared_libs: [
+        "libbase",
+        "libhidlbase",
+        "libutils",
+        "vendor.lineage.powershare@1.0",
+    ],
+}

powershare/PowerShare.cpp

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2022 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 "vendor.lineage.powershare@1.0-service.eqs"
+
+#include "PowerShare.h"
+
+#include <android-base/file.h>
+
+using ::android::base::ReadFileToString;
+using ::android::base::WriteStringToFile;
+
+namespace {
+
+constexpr const char* kWirelessTxEnablePath = "/sys/class/power_supply/wireless/device/tx_mode";
+
+}  // anonymous namespace
+
+namespace vendor {
+namespace lineage {
+namespace powershare {
+namespace V1_0 {
+namespace implementation {
+
+Return<bool> PowerShare::isEnabled() {
+    std::string value;
+    return ReadFileToString(kWirelessTxEnablePath, &value) && value != "0\n";
+}
+
+Return<bool> PowerShare::setEnabled(bool enable) {
+    return WriteStringToFile(enable ? "1" : "0", kWirelessTxEnablePath, 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/PowerShare.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+#ifndef VENDOR_LINEAGE_POWERSHARE_V1_0_POWERSHARE_H
+#define VENDOR_LINEAGE_POWERSHARE_V1_0_POWERSHARE_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/service.cpp

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2022 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 "vendor.lineage.powershare@1.0-service.eqs"
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+
+#include "PowerShare.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/vendor.lineage.powershare@1.0-service.eqs.rc

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

powershare/vendor.lineage.powershare@1.0-service.eqs.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>