healthd: separate libbatterymonitor for use in recovery.

Bug: 26879394

Change-Id: I97b5b4994c42988ce43f5085b8b4b25e9e80c9fa
(cherry picked from commit e98e177a34eb3200b9f95be8379223271933b885)

2 files changed, 191 insertions, 0 deletions

diff --git a/healthd/include/healthd/BatteryMonitor.h b/healthd/include/healthd/BatteryMonitor.h
new file mode 100644
index 000000000..31c4e0920
--- /dev/null
+++ b/healthd/include/healthd/BatteryMonitor.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2013 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.
+ */
+
+#ifndef HEALTHD_BATTERYMONITOR_H
+#define HEALTHD_BATTERYMONITOR_H
+
+#include <batteryservice/BatteryService.h>
+#include <binder/IInterface.h>
+#include <utils/String8.h>
+#include <utils/Vector.h>
+
+#include <healthd/healthd.h>
+
+namespace android {
+
+class BatteryMonitor {
+  public:
+
+    enum PowerSupplyType {
+        ANDROID_POWER_SUPPLY_TYPE_UNKNOWN = 0,
+        ANDROID_POWER_SUPPLY_TYPE_AC,
+        ANDROID_POWER_SUPPLY_TYPE_USB,
+        ANDROID_POWER_SUPPLY_TYPE_WIRELESS,
+        ANDROID_POWER_SUPPLY_TYPE_BATTERY
+    };
+
+    BatteryMonitor();
+    void init(struct healthd_config *hc);
+    bool update(void);
+    status_t getProperty(int id, struct BatteryProperty *val);
+    void dumpState(int fd);
+
+  private:
+    struct healthd_config *mHealthdConfig;
+    Vector<String8> mChargerNames;
+    bool mBatteryDevicePresent;
+    bool mAlwaysPluggedDevice;
+    int mBatteryFixedCapacity;
+    int mBatteryFixedTemperature;
+    struct BatteryProperties props;
+
+    int getBatteryStatus(const char* status);
+    int getBatteryHealth(const char* status);
+    int readFromFile(const String8& path, char* buf, size_t size);
+    PowerSupplyType readPowerSupplyType(const String8& path);
+    bool getBooleanField(const String8& path);
+    int getIntField(const String8& path);
+};
+
+}; // namespace android
+
+#endif // HEALTHD_BATTERY_MONTIOR_H
diff --git a/healthd/include/healthd/healthd.h b/healthd/include/healthd/healthd.h
new file mode 100644
index 000000000..34ea55f66
--- /dev/null
+++ b/healthd/include/healthd/healthd.h
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2013 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.
+ */
+
+#ifndef _HEALTHD_H_
+#define _HEALTHD_H_
+
+#include <batteryservice/BatteryService.h>
+#include <sys/types.h>
+#include <utils/Errors.h>
+#include <utils/String8.h>
+
+// periodic_chores_interval_fast, periodic_chores_interval_slow: intervals at
+// which healthd wakes up to poll health state and perform periodic chores,
+// in units of seconds:
+//
+//    periodic_chores_interval_fast is used while the device is not in
+//    suspend, or in suspend and connected to a charger (to watch for battery
+//    overheat due to charging).  The default value is 60 (1 minute).  Value
+//    -1 turns off periodic chores (and wakeups) in these conditions.
+//
+//    periodic_chores_interval_slow is used when the device is in suspend and
+//    not connected to a charger (to watch for a battery drained to zero
+//    remaining capacity).  The default value is 600 (10 minutes).  Value -1
+//    tuns off periodic chores (and wakeups) in these conditions.
+//
+// power_supply sysfs attribute file paths.  Set these to specific paths
+// to use for the associated battery parameters.  healthd will search for
+// appropriate power_supply attribute files to use for any paths left empty:
+//
+//    batteryStatusPath: charging status (POWER_SUPPLY_PROP_STATUS)
+//    batteryHealthPath: battery health (POWER_SUPPLY_PROP_HEALTH)
+//    batteryPresentPath: battery present (POWER_SUPPLY_PROP_PRESENT)
+//    batteryCapacityPath: remaining capacity (POWER_SUPPLY_PROP_CAPACITY)
+//    batteryVoltagePath: battery voltage (POWER_SUPPLY_PROP_VOLTAGE_NOW)
+//    batteryTemperaturePath: battery temperature (POWER_SUPPLY_PROP_TEMP)
+//    batteryTechnologyPath: battery technology (POWER_SUPPLY_PROP_TECHNOLOGY)
+//    batteryCurrentNowPath: battery current (POWER_SUPPLY_PROP_CURRENT_NOW)
+//    batteryChargeCounterPath: battery accumulated charge
+//                                         (POWER_SUPPLY_PROP_CHARGE_COUNTER)
+
+struct healthd_config {
+    int periodic_chores_interval_fast;
+    int periodic_chores_interval_slow;
+
+    android::String8 batteryStatusPath;
+    android::String8 batteryHealthPath;
+    android::String8 batteryPresentPath;
+    android::String8 batteryCapacityPath;
+    android::String8 batteryVoltagePath;
+    android::String8 batteryTemperaturePath;
+    android::String8 batteryTechnologyPath;
+    android::String8 batteryCurrentNowPath;
+    android::String8 batteryCurrentAvgPath;
+    android::String8 batteryChargeCounterPath;
+    android::String8 batteryFullChargePath;
+    android::String8 batteryCycleCountPath;
+
+    int (*energyCounter)(int64_t *);
+    int boot_min_cap;
+    bool (*screen_on)(android::BatteryProperties *props);
+};
+
+// Global helper functions
+
+int healthd_register_event(int fd, void (*handler)(uint32_t));
+void healthd_battery_update();
+android::status_t healthd_get_property(int id,
+    struct android::BatteryProperty *val);
+void healthd_dump_battery_state(int fd);
+
+struct healthd_mode_ops {
+    void (*init)(struct healthd_config *config);
+    int (*preparetowait)(void);
+    void (*heartbeat)(void);
+    void (*battery_update)(struct android::BatteryProperties *props);
+};
+
+extern struct healthd_mode_ops *healthd_mode_ops;
+
+// Charger mode
+
+void healthd_mode_charger_init(struct healthd_config *config);
+int healthd_mode_charger_preparetowait(void);
+void healthd_mode_charger_heartbeat(void);
+void healthd_mode_charger_battery_update(
+    struct android::BatteryProperties *props);
+
+// The following are implemented in libhealthd_board to handle board-specific
+// behavior.
+//
+// healthd_board_init() is called at startup time to modify healthd's
+// configuration according to board-specific requirements.  config
+// points to the healthd configuration values described above.  To use default
+// values, this function can simply return without modifying the fields of the
+// config parameter.
+
+void healthd_board_init(struct healthd_config *config);
+
+// Process updated battery property values.  This function is called when
+// the kernel sends updated battery status via a uevent from the power_supply
+// subsystem, or when updated values are polled by healthd, as for periodic
+// poll of battery state.
+//
+// props are the battery properties read from the kernel.  These values may
+// be modified in this call, prior to sending the modified values to the
+// Android runtime.
+//
+// Return 0 to indicate the usual kernel log battery status heartbeat message
+// is to be logged, or non-zero to prevent logging this information.
+
+int healthd_board_battery_update(struct android::BatteryProperties *props);
+
+#endif /* _HEALTHD_H_ */