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Commit 559545a0 authored by Abhijeet Dharmapurikar's avatar Abhijeet Dharmapurikar Committed by Michael Bestas
Browse files

healthd: Reinitialize mChargerNames for every battery update 

Booting up the device without usb, the kernel sets the usb power supply
type as UNKNOWN. The type of usb power supply changes at run-time as
various chargers are plugged in/out. However, healthd initilizes the
charger list only at bootup. Change it such that it checks for charger
type changes with every battery or usb uevent.

While at it, the kernel may have a power supply type which is not known
to healthd. This is perfectly fine. Update healthd to not print a
warning.

Change-Id: I2ec9f9a420ca61814d43c316b418ce94de3691bc
parent 3984b0a4

healthd/BatteryMonitor.cpp

+35 −3
Original line number Diff line number Diff line
@@ -173,10 +173,8 @@ BatteryMonitor::PowerSupplyType BatteryMonitor::readPowerSupplyType(const String 
        return ANDROID_POWER_SUPPLY_TYPE_UNKNOWN;



    ret = mapSysfsString(buf.c_str(), supplyTypeMap);

    if (ret < 0) {

        KLOG_WARNING(LOG_TAG, "Unknown power supply type '%s'\n", buf.c_str());

    if (ret < 0)

        ret = ANDROID_POWER_SUPPLY_TYPE_UNKNOWN;

    }



    return static_cast<BatteryMonitor::PowerSupplyType>(ret);

}
@@ -246,6 +244,40 @@ bool BatteryMonitor::update(void) { 


    double MaxPower = 0;



    // Rescan for the available charger types

    std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(POWER_SUPPLY_SYSFS_PATH), closedir);

    if (dir == NULL) {

        KLOG_ERROR(LOG_TAG, "Could not open %s\n", POWER_SUPPLY_SYSFS_PATH);

    } else {

        struct dirent* entry;

        String8 path;



        mChargerNames.clear();



        while ((entry = readdir(dir.get()))) {

            const char* name = entry->d_name;



            if (!strcmp(name, ".") || !strcmp(name, ".."))

                continue;



            // Look for "type" file in each subdirectory

            path.clear();

            path.appendFormat("%s/%s/type", POWER_SUPPLY_SYSFS_PATH, name);

            switch(BatteryMonitor::readPowerSupplyType(path)) {

            case ANDROID_POWER_SUPPLY_TYPE_AC:

            case ANDROID_POWER_SUPPLY_TYPE_USB:

            case ANDROID_POWER_SUPPLY_TYPE_WIRELESS:

                path.clear();

                path.appendFormat("%s/%s/online", POWER_SUPPLY_SYSFS_PATH, name);

                if (access(path.string(), R_OK) == 0)

                    mChargerNames.add(String8(name));

                break;

            default:

                break;

            }

        }

    }



    for (size_t i = 0; i < mChargerNames.size(); i++) {

        String8 path;

        path.appendFormat("%s/%s/online", POWER_SUPPLY_SYSFS_PATH,