healthd: add android.hardware.health@2.0-impl-default.recovery (4db762a4) · Commits · e / os / android_hardware_interfaces

health/2.0/README

+46 −0

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		@@ -107,3 +107,49 @@ void get_disk_stats(std::vector<struct DiskStats>& stats) {
		# device/<manufacturer>/<device>/sepolicy/vendor/hal_health_default.te
		# Add device specific permissions to hal_health_default domain, especially
		# if Step 6.1 or Step 7.2 is done.

		9. Implementing health HAL in recovery. The health HAL is used for battery
		status checks during OTA for non-A/B devices. If the health HAL is not
		implemented in recovery, is_battery_ok() will always return true.

		9.1 If the device does not have a vendor-specific libhealthd, nothing needs to
		be done. A "backup" implementation is provided in
		android.hardware.health@2.0-impl-default, which is always installed to recovery
		image by default.

		9.2 If the device do have a vendor-specific libhealthd, implement the following
		module and include it in PRODUCT_PACKAGES (replace <device> with appropriate
		strings):

		// Android.bp
		cc_library_shared {
		name: "android.hardware.health@2.0-impl-<device>",
		recovery_available: true,
		relative_install_path: "hw",
		static_libs: [
		"android.hardware.health@2.0-impl",
		"libhealthd.<device>"
		// Include the following if Step 7.1, otherwise do Step 7.2
		"libhealthstoragedefault",
		],
		srcs: [
		"HealthImpl.cpp",
		],
		overrides: [
		"android.hardware.health@2.0-impl-default",
		],
		}

		// HealthImpl.cpp
		#include <health2/Health.h>
		#include <healthd/healthd.h>
		using android::hardware::health::V2_0::IHealth;
		using android::hardware::health::V2_0::implementation::Health;
		extern "C" IHealth* HIDL_FETCH_IHealth(const char* name) {
		const static std::string providedInstance{"default"};
		if (providedInstance != name) return nullptr;
		return Health::initInstance(&gHealthdConfig).get();
		}

		# device.mk
		PRODUCT_PACKAGES += android.hardware.health@2.0-impl-<device>

health/2.0/default/Android.bp

+42 −10

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		// Helper library for implementing health HAL. It is recommended that a health
		// service or passthrough HAL link to this library.
		cc_library_static {
		name: "android.hardware.health@2.0-impl",
		vendor_available: true,
		cc_defaults {
		name: "android.hardware.health@2.0-impl_defaults",

		recovery_available: true,
		srcs: [
		"Health.cpp",
		"healthd_common.cpp",
		cflags: [
		"-Wall",
		"-Werror",
		],

		export_include_dirs: ["include"],

		shared_libs: [
		"libbase",
		"libhidlbase",
		@@ -27,3 +23,39 @@ cc_library_static {
		"android.hardware.health@1.0-convert",
		],
		}

		// Helper library for implementing health HAL. It is recommended that a health
		// service or passthrough HAL link to this library.
		cc_library_static {
		name: "android.hardware.health@2.0-impl",
		defaults: ["android.hardware.health@2.0-impl_defaults"],

		vendor_available: true,
		srcs: [
		"Health.cpp",
		"healthd_common.cpp",
		],

		export_include_dirs: ["include"],
		}

		// Default passthrough implementation for recovery. Vendors can implement
		// android.hardware.health@2.0-impl-recovery-<device> to customize the behavior
		// of the HAL in recovery.
		// The implementation does NOT start the uevent loop for polling.
		cc_library_shared {
		name: "android.hardware.health@2.0-impl-default",
		defaults: ["android.hardware.health@2.0-impl_defaults"],

		recovery_available: true,
		relative_install_path: "hw",

		static_libs: [
		"android.hardware.health@2.0-impl",
		"libhealthstoragedefault",
		],

		srcs: [
		"HealthImplDefault.cpp",
		],
		}

health/2.0/default/HealthImplDefault.cpp

0 → 100644

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		/*
		* Copyright (C) 2018 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.
		*/

		#include <health2/Health.h>
		#include <healthd/healthd.h>

		using android::hardware::health::V2_0::IHealth;
		using android::hardware::health::V2_0::implementation::Health;

		static struct healthd_config gHealthdConfig = {
		.batteryStatusPath = android::String8(android::String8::kEmptyString),
		.batteryHealthPath = android::String8(android::String8::kEmptyString),
		.batteryPresentPath = android::String8(android::String8::kEmptyString),
		.batteryCapacityPath = android::String8(android::String8::kEmptyString),
		.batteryVoltagePath = android::String8(android::String8::kEmptyString),
		.batteryTemperaturePath = android::String8(android::String8::kEmptyString),
		.batteryTechnologyPath = android::String8(android::String8::kEmptyString),
		.batteryCurrentNowPath = android::String8(android::String8::kEmptyString),
		.batteryCurrentAvgPath = android::String8(android::String8::kEmptyString),
		.batteryChargeCounterPath = android::String8(android::String8::kEmptyString),
		.batteryFullChargePath = android::String8(android::String8::kEmptyString),
		.batteryCycleCountPath = android::String8(android::String8::kEmptyString),
		.energyCounter = nullptr,
		.boot_min_cap = 0,
		.screen_on = nullptr};

		void healthd_board_init(struct healthd_config*) {
		// use defaults
		}

		int healthd_board_battery_update(struct android::BatteryProperties*) {
		// return 0 to log periodic polled battery status to kernel log
		return 0;
		}

		extern "C" IHealth* HIDL_FETCH_IHealth(const char* name) {
		const static std::string providedInstance{"backup"};

		if (providedInstance == name) {
		// use defaults
		// Health class stores static instance
		return Health::initInstance(&gHealthdConfig).get();
		}
		return nullptr;
		}