GetBatteryInfo() also reads AIDL health HAL. (67a8fd21) · Commits · e / os / android_bootable_recovery

Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -157,6 +157,7 @@ cc_binary {
		],

		shared_libs: [
		"android.hardware.health-V1-ndk", // from librecovery_utils
		"librecovery_ui",
		],

minadbd/Android.bp

+2 −0

Original line number	Diff line number	Diff line
		@@ -97,6 +97,7 @@ cc_binary {
		],

		shared_libs: [
		"android.hardware.health-V1-ndk", // from librecovery_utils
		"libbase",
		"libcrypto",
		],
		@@ -128,6 +129,7 @@ cc_test {
		],

		static_libs: [
		"android.hardware.health-V1-ndk", // from librecovery_utils
		"libminadbd_services",
		"libfusesideload",
		"librecovery_utils",

recovery_utils/Android.bp

+12 −0

Original line number	Diff line number	Diff line
		@@ -31,6 +31,7 @@ cc_defaults {
		shared_libs: [
		"android.hardware.health@2.0",
		"libbase",
		"libbinder_ndk",
		"libext4_utils",
		"libfs_mgr",
		"libhidlbase",
		@@ -42,8 +43,10 @@ cc_defaults {
		"libotautil",

		// External dependencies.
		"android.hardware.health-translate-ndk",
		"libfstab",
		"libhealthhalutils",
		"libhealthshim",
		],
		}

		@@ -70,6 +73,15 @@ cc_library_static {
		"libvold_headers",
		],

		shared_libs: [
		// The following cannot be placed in librecovery_utils_defaults,
		// because at the time of writing, android.hardware.health-V1-ndk.so
		// is not installed to the system image yet. (It is installed
		// to the recovery ramdisk.) Hence, minadbd_test must link to it
		// statically.
		"android.hardware.health-V1-ndk",
		],

		export_include_dirs: [
		"include",
		],

recovery_utils/battery_utils.cpp

+45 −28

Original line number	Diff line number	Diff line
		@@ -20,59 +20,74 @@
		#include <unistd.h>

		#include <android-base/logging.h>
		#include <android/binder_manager.h>
		#include <health-shim/shim.h>
		#include <healthhalutils/HealthHalUtils.h>

		BatteryInfo GetBatteryInfo() {
		using android::hardware::health::V1_0::BatteryStatus;
		using android::hardware::health::V2_0::get_health_service;
		using android::hardware::health::V2_0::IHealth;
		using android::hardware::health::V2_0::Result;
		using android::hardware::health::V2_0::toString;
		using HidlHealth = android::hardware::health::V2_0::IHealth;
		using aidl::android::hardware::health::BatteryStatus;
		using aidl::android::hardware::health::HealthShim;
		using aidl::android::hardware::health::IHealth;
		using aidl::android::hardware::health::toString;
		using std::string_literals::operator""s;

		android::sp<IHealth> health = get_health_service();
		auto service_name = IHealth::descriptor + "/default"s;
		std::shared_ptr<IHealth> health;
		if (AServiceManager_isDeclared(service_name.c_str())) {
		ndk::SpAIBinder binder(AServiceManager_waitForService(service_name.c_str()));
		health = IHealth::fromBinder(binder);
		}
		if (health == nullptr) {
		LOG(INFO) << "Unable to get AIDL health service, trying HIDL...";
		android::sp<HidlHealth> hidl_health = get_health_service();
		if (hidl_health != nullptr) {
		health = ndk::SharedRefBase::make<HealthShim>(hidl_health);
		}
		}
		if (health == nullptr) {
		LOG(WARNING) << "No health implementation is found; assuming defaults";
		}

		int wait_second = 0;
		while (true) {
		auto charge_status = BatteryStatus::UNKNOWN;

		if (health == nullptr) {
		LOG(WARNING) << "No health implementation is found; assuming defaults";
		} else {
		health
		->getChargeStatus([&charge_status](auto res, auto out_status) {
		if (res == Result::SUCCESS) {
		charge_status = out_status;
		if (health != nullptr) {
		auto res = health->getChargeStatus(&charge_status);
		if (!res.isOk()) {
		LOG(WARNING) << "Unable to call getChargeStatus: " << res.getDescription();
		charge_status = BatteryStatus::UNKNOWN;
		}
		})
		.isOk(); // should not have transport error
		}

		// Treat unknown status as on charger. See hardware/interfaces/health/1.0/types.hal for the
		// meaning of the return values.
		// Treat unknown status as on charger. See hardware/interfaces/health/aidl/BatteryStatus.aidl
		// for the meaning of the return values.
		bool charging = (charge_status != BatteryStatus::DISCHARGING &&
		charge_status != BatteryStatus::NOT_CHARGING);

		Result res = Result::UNKNOWN;
		int32_t capacity = INT32_MIN;
		if (health != nullptr) {
		health
		->getCapacity([&res, &capacity](auto out_res, auto out_capacity) {
		res = out_res;
		capacity = out_capacity;
		})
		.isOk(); // should not have transport error
		auto res = health->getCapacity(&capacity);
		if (!res.isOk()) {
		LOG(WARNING) << "Unable to call getCapacity: " << res.getDescription();
		capacity = INT32_MIN;
		}
		}

		LOG(INFO) << "charge_status " << toString(charge_status) << ", charging " << charging
		<< ", status " << toString(res) << ", capacity " << capacity;
		<< ", capacity " << capacity;

		constexpr int BATTERY_READ_TIMEOUT_IN_SEC = 10;
		// At startup, the battery drivers in devices like N5X/N6P take some time to load
		// the battery profile. Before the load finishes, it reports value 50 as a fake
		// capacity. BATTERY_READ_TIMEOUT_IN_SEC is set that the battery drivers are expected
		// to finish loading the battery profile earlier than 10 seconds after kernel startup.
		if (res == Result::SUCCESS && capacity == 50) {
		if (capacity == 50) {
		if (wait_second < BATTERY_READ_TIMEOUT_IN_SEC) {
		LOG(INFO) << "Battery capacity == 50, waiting "
		<< (BATTERY_READ_TIMEOUT_IN_SEC - wait_second)
		<< " seconds to ensure this is not a fake value...";
		sleep(1);
		wait_second++;
		continue;
		@@ -80,10 +95,12 @@ BatteryInfo GetBatteryInfo() {
		}
		// If we can't read battery percentage, it may be a device without battery. In this
		// situation, use 100 as a fake battery percentage.
		if (res != Result::SUCCESS) {
		if (capacity == INT32_MIN) {
		LOG(WARNING) << "Using fake battery capacity 100.";
		capacity = 100;
		}

		LOG(INFO) << "GetBatteryInfo() reporting charging " << charging << ", capacity " << capacity;
		return BatteryInfo{ charging, capacity };
		}
		}

tests/Android.bp

+7 −0

Original line number	Diff line number	Diff line
		@@ -138,7 +138,14 @@ cc_test {
		"unit/*.cpp",
		],

		shared_libs: [
		"libbinder_ndk",
		],

		static_libs: libapplypatch_static_libs + librecovery_static_libs + [
		"android.hardware.health-translate-ndk",
		"android.hardware.health-V1-ndk",
		"libhealthshim",
		"librecovery_ui",
		"libfusesideload",
		"libminui",