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Commit 1d96fbc4 authored by Steve Kondik's avatar Steve Kondik
Browse files

power: Add CPU boosting interface 

 * Boosts CPU using Power HAL for the given duration.
 * Duration is given in microseconds.
 * Power HAL must implement POWER_HINT_CPU_BOOST.

Change-Id: Ic79baf7e3d0f75483c2fe8a242b4c3d93368b68b
parent 4aad10d2

core/java/android/os/IPowerManager.aidl

+2 −0
Original line number Diff line number Diff line
@@ -53,4 +53,6 @@ interface IPowerManager 
    int getLightSensorScreenBrightness();

    int getLightSensorButtonBrightness();

    int getLightSensorKeyboardBrightness();



    void cpuBoost(int duration);

}

core/java/android/os/LocalPowerManager.java

+2 −0
Original line number Diff line number Diff line
@@ -45,4 +45,6 @@ public interface LocalPowerManager { 


    void setScreenBrightnessOverride(int brightness);

    void setButtonBrightnessOverride(int brightness);



    void cpuBoost(int duration);

}

core/java/android/os/PowerManager.java

+18 −0
Original line number Diff line number Diff line
@@ -559,6 +559,24 @@ public class PowerManager 
        }

    }



    /**

     * Boost the CPU. Boosts the cpu for the given duration in microseconds.

     * Requires the {@link android.Manifest.permission#CPU_BOOST} permission.

     *

     * @param duration in microseconds to boost the CPU

     *

     * @hide

     */

    public void cpuBoost(int duration)

    {

        try {

            if (mService != null) {

                mService.cpuBoost(duration);

            }

        } catch (RemoteException e) {

        }

    }



    private PowerManager()

    {

    }

services/java/com/android/server/PowerManagerService.java

+13 −0
Original line number Diff line number Diff line
@@ -196,6 +196,9 @@ public class PowerManagerService extends IPowerManager.Stub 
    static final int INITIAL_BUTTON_BRIGHTNESS = PowerManager.BRIGHTNESS_OFF;

    static final int INITIAL_KEYBOARD_BRIGHTNESS = PowerManager.BRIGHTNESS_OFF;



    // Max time (microseconds) to allow a CPU boost for

    static final int MAX_CPU_BOOST_TIME = 5000000;



    private final int MY_UID;

    private final int MY_PID;
@@ -358,6 +361,7 @@ public class PowerManagerService extends IPowerManager.Stub 
    private static native int nativeSetScreenState(boolean on);

    private static native void nativeShutdown();

    private static native void nativeReboot(String reason) throws IOException;

    private static native void nativeCpuBoost(int duration);



    /*

    static PrintStream mLog;
@@ -1185,6 +1189,15 @@ public class PowerManagerService extends IPowerManager.Stub 
        }

    }



    public void cpuBoost(int duration)

    {

        if (duration > 0 && duration <= MAX_CPU_BOOST_TIME) {

            nativeCpuBoost(duration);

        } else {

            Log.e(TAG, "Invalid boost duration: " + duration);

        }

    }



    private static String lockType(int type)

    {

        switch (type)

services/jni/com_android_server_PowerManagerService.cpp

+9 −0
Original line number Diff line number Diff line
@@ -207,6 +207,13 @@ static void nativeReboot(JNIEnv *env, jobject clazz, jstring reason) { 
    jniThrowIOException(env, errno);

}



void nativeCpuBoost(JNIEnv *env, jobject clazz, jint duration) {

    // Tell the Power HAL to boost the CPU

    if (gPowerModule && gPowerModule->powerHint) {

        gPowerModule->powerHint(gPowerModule, POWER_HINT_CPU_BOOST, (void *) duration);

    }

}





// ----------------------------------------------------------------------------
@@ -228,6 +235,8 @@ static JNINativeMethod gPowerManagerServiceMethods[] = { 
            (void*) nativeShutdown },

    { "nativeReboot", "(Ljava/lang/String;)V",

            (void*) nativeReboot },

    { "nativeCpuBoost", "(I)V",

            (void*) nativeCpuBoost },

};



#define FIND_CLASS(var, className) \