67a8fd2175
Test: call GetBatteryInfo manually with and without AIDL health HAL Bug: 170338625 Bug: 177269435 Change-Id: I123739e5bc372d5198fd711f592ceac04d46ab28
106 lines
4 KiB
C++
106 lines
4 KiB
C++
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "recovery_utils/battery_utils.h"
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#include <stdint.h>
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#include <unistd.h>
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#include <android-base/logging.h>
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#include <android/binder_manager.h>
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#include <health-shim/shim.h>
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#include <healthhalutils/HealthHalUtils.h>
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BatteryInfo GetBatteryInfo() {
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using android::hardware::health::V2_0::get_health_service;
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using HidlHealth = android::hardware::health::V2_0::IHealth;
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using aidl::android::hardware::health::BatteryStatus;
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using aidl::android::hardware::health::HealthShim;
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using aidl::android::hardware::health::IHealth;
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using aidl::android::hardware::health::toString;
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using std::string_literals::operator""s;
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auto service_name = IHealth::descriptor + "/default"s;
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std::shared_ptr<IHealth> health;
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if (AServiceManager_isDeclared(service_name.c_str())) {
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ndk::SpAIBinder binder(AServiceManager_waitForService(service_name.c_str()));
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health = IHealth::fromBinder(binder);
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}
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if (health == nullptr) {
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LOG(INFO) << "Unable to get AIDL health service, trying HIDL...";
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android::sp<HidlHealth> hidl_health = get_health_service();
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if (hidl_health != nullptr) {
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health = ndk::SharedRefBase::make<HealthShim>(hidl_health);
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}
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}
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if (health == nullptr) {
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LOG(WARNING) << "No health implementation is found; assuming defaults";
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}
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int wait_second = 0;
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while (true) {
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auto charge_status = BatteryStatus::UNKNOWN;
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if (health != nullptr) {
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auto res = health->getChargeStatus(&charge_status);
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if (!res.isOk()) {
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LOG(WARNING) << "Unable to call getChargeStatus: " << res.getDescription();
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charge_status = BatteryStatus::UNKNOWN;
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}
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}
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// Treat unknown status as on charger. See hardware/interfaces/health/aidl/BatteryStatus.aidl
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// for the meaning of the return values.
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bool charging = (charge_status != BatteryStatus::DISCHARGING &&
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charge_status != BatteryStatus::NOT_CHARGING);
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int32_t capacity = INT32_MIN;
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if (health != nullptr) {
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auto res = health->getCapacity(&capacity);
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if (!res.isOk()) {
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LOG(WARNING) << "Unable to call getCapacity: " << res.getDescription();
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capacity = INT32_MIN;
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}
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}
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LOG(INFO) << "charge_status " << toString(charge_status) << ", charging " << charging
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<< ", capacity " << capacity;
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constexpr int BATTERY_READ_TIMEOUT_IN_SEC = 10;
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// At startup, the battery drivers in devices like N5X/N6P take some time to load
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// the battery profile. Before the load finishes, it reports value 50 as a fake
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// capacity. BATTERY_READ_TIMEOUT_IN_SEC is set that the battery drivers are expected
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// to finish loading the battery profile earlier than 10 seconds after kernel startup.
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if (capacity == 50) {
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if (wait_second < BATTERY_READ_TIMEOUT_IN_SEC) {
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LOG(INFO) << "Battery capacity == 50, waiting "
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<< (BATTERY_READ_TIMEOUT_IN_SEC - wait_second)
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<< " seconds to ensure this is not a fake value...";
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sleep(1);
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wait_second++;
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continue;
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}
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}
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// If we can't read battery percentage, it may be a device without battery. In this
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// situation, use 100 as a fake battery percentage.
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if (capacity == INT32_MIN) {
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LOG(WARNING) << "Using fake battery capacity 100.";
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capacity = 100;
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}
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LOG(INFO) << "GetBatteryInfo() reporting charging " << charging << ", capacity " << capacity;
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return BatteryInfo{ charging, capacity };
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}
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}
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