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90 lines
3.1 KiB
90 lines
3.1 KiB
4 months ago
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/*
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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 <healthhalutils/HealthHalUtils.h>
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BatteryInfo GetBatteryInfo() {
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using android::hardware::health::V1_0::BatteryStatus;
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using android::hardware::health::V2_0::get_health_service;
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using android::hardware::health::V2_0::IHealth;
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using android::hardware::health::V2_0::Result;
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using android::hardware::health::V2_0::toString;
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android::sp<IHealth> health = get_health_service();
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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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LOG(WARNING) << "No health implementation is found; assuming defaults";
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} else {
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health
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->getChargeStatus([&charge_status](auto res, auto out_status) {
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if (res == Result::SUCCESS) {
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charge_status = out_status;
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}
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})
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.isOk(); // should not have transport error
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}
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// Treat unknown status as on charger. See hardware/interfaces/health/1.0/types.hal for the
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// 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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Result res = Result::UNKNOWN;
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int32_t capacity = INT32_MIN;
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if (health != nullptr) {
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health
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->getCapacity([&res, &capacity](auto out_res, auto out_capacity) {
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res = out_res;
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capacity = out_capacity;
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})
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.isOk(); // should not have transport error
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}
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LOG(INFO) << "charge_status " << toString(charge_status) << ", charging " << charging
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<< ", status " << toString(res) << ", 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 (res == Result::SUCCESS && capacity == 50) {
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if (wait_second < BATTERY_READ_TIMEOUT_IN_SEC) {
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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 (res != Result::SUCCESS) {
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capacity = 100;
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}
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return BatteryInfo{ charging, capacity };
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}
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}
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