Add device tangorpro

based on two sources:
1. 52e030ecef8a2debcd0a7cebb0b2cddc50e8e4e6
(ChangeId: Ieba6a75fe45595592c61dc5ad4e0c723adccaf35)
2. 3164f3d31b1197f305d968027f2e6f18663f1382
(ChangeId: Ic517f1cd5462f3653de3742834ec251362e7849d)

No-Typo-Check: based on above commit

Bug: 220073297
Change-Id: I244f73dc8485045e1bc4605a2701a1e4d32139b0

powerstats/Android.bp

@@ -0,0 +1,42 @@
+// Copyright (C) 2021 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.
+
+soong_namespace {
+    imports: [
+        "hardware/google/pixel",
+        "device/google/gs201/powerstats",
+    ]
+}
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "device_google_tangorpro_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["device_google_tangorpro_license"],
+}
+
+cc_binary {
+    name: "android.hardware.power.stats-service.pixel",
+    defaults: ["powerstats_pixel_binary_defaults"],
+
+    srcs: [
+        "*.cpp",
+    ],
+
+    shared_libs: [
+        "android.hardware.power.stats-impl.gs201",
+    ],
+}

powerstats/service.cpp

@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+#define LOG_TAG "android.hardware.power.stats-service.pixel"
+
+#include <dataproviders/DisplayStateResidencyDataProvider.h>
+#include <dataproviders/PowerStatsEnergyConsumer.h>
+#include <Gs201CommonDataProviders.h>
+#include <PowerStatsAidl.h>
+
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <log/log.h>
+
+using aidl::android::hardware::power::stats::DisplayStateResidencyDataProvider;
+using aidl::android::hardware::power::stats::EnergyConsumerType;
+using aidl::android::hardware::power::stats::PowerStatsEnergyConsumer;
+
+void addDisplay(std::shared_ptr<PowerStats> p) {
+    // Add display residency stats
+    std::vector<std::string> states = {
+        "Off",
+        "LP: 1080x2340@30",
+        "On: 1080x2340@60",
+        "On: 1080x2340@90",
+        "HBM: 1080x2340@60",
+        "HBM: 1080x2340@90"};
+
+    p->addStateResidencyDataProvider(std::make_unique<DisplayStateResidencyDataProvider>("Display",
+            "/sys/class/backlight/panel0-backlight/state",
+            states));
+
+    // Add display energy consumer
+    /*
+     * TODO(b/167216667): Add correct display power model here. Must read from display rail
+     * and include proper coefficients for display states.
+     */
+    p->addEnergyConsumer(PowerStatsEnergyConsumer::createMeterAndEntityConsumer(p,
+            EnergyConsumerType::DISPLAY, "display", {"PPVAR_VSYS_PWR_DISP"}, "Display",
+            {{"LP: 1080x2340@30", 1},
+             {"On: 1080x2340@60", 2},
+             {"On: 1080x2340@90", 3}}));
+}
+
+int main() {
+    LOG(INFO) << "Pixel PowerStats HAL AIDL Service is starting.";
+
+    // single thread
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+
+    std::shared_ptr<PowerStats> p = ndk::SharedRefBase::make<PowerStats>();
+
+    addGs201CommonDataProviders(p);
+    addDisplay(p);
+
+    const std::string instance = std::string() + PowerStats::descriptor + "/default";
+    binder_status_t status = AServiceManager_addService(p->asBinder().get(), instance.c_str());
+    LOG_ALWAYS_FATAL_IF(status != STATUS_OK);
+
+    ABinderProcess_joinThreadPool();
+    return EXIT_FAILURE;  // should not reach
+}