diff options
| -rw-r--r-- | services/java/com/android/server/power/PowerManagerService.java | 40 |
1 files changed, 35 insertions, 5 deletions
diff --git a/services/java/com/android/server/power/PowerManagerService.java b/services/java/com/android/server/power/PowerManagerService.java index 5e3e77d..4e692a2 100644 --- a/services/java/com/android/server/power/PowerManagerService.java +++ b/services/java/com/android/server/power/PowerManagerService.java @@ -162,6 +162,11 @@ public final class PowerManagerService extends IPowerManager.Stub // Poll interval in milliseconds for watching boot animation finished. private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; + // If the battery level drops by this percentage and the user activity timeout + // has expired, then assume the device is receiving insufficient current to charge + // effectively and terminate the dream. + private static final int DREAM_BATTERY_LEVEL_DRAIN_CUTOFF = 5; + private Context mContext; private LightsService mLightsService; private BatteryService mBatteryService; @@ -256,6 +261,14 @@ public final class PowerManagerService extends IPowerManager.Stub // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. private int mPlugType; + // The current battery level percentage. + private int mBatteryLevel; + + // The battery level percentage at the time the dream started. + // This is used to terminate a dream and go to sleep if the battery is + // draining faster than it is charging and the user activity timeout has expired. + private int mBatteryLevelWhenDreamStarted; + // True if the device should wake up when plugged or unplugged. private boolean mWakeUpWhenPluggedOrUnpluggedConfig; @@ -1067,12 +1080,14 @@ public final class PowerManagerService extends IPowerManager.Stub final int oldPlugType = mPlugType; mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); mPlugType = mBatteryService.getPlugType(); + mBatteryLevel = mBatteryService.getBatteryLevel(); if (DEBUG) { Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered + ", mIsPowered=" + mIsPowered + ", oldPlugType=" + oldPlugType - + ", mPlugType=" + mPlugType); + + ", mPlugType=" + mPlugType + + ", mBatteryLevel=" + mBatteryLevel); } if (wasPowered != mIsPowered || oldPlugType != mPlugType) { @@ -1126,8 +1141,7 @@ public final class PowerManagerService extends IPowerManager.Stub } if (!wasPowered && mIsPowered && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS - && mBatteryService.getBatteryLevel() >= - WIRELESS_CHARGER_TURN_ON_BATTERY_LEVEL_LIMIT) { + && mBatteryLevel >= WIRELESS_CHARGER_TURN_ON_BATTERY_LEVEL_LIMIT) { return false; } @@ -1403,7 +1417,7 @@ public final class PowerManagerService extends IPowerManager.Stub mSandmanScheduled = false; boolean canDream = canDreamLocked(); if (DEBUG_SPEW) { - Log.d(TAG, "handleSandman: canDream=" + canDream + Slog.d(TAG, "handleSandman: canDream=" + canDream + ", mWakefulness=" + wakefulnessToString(mWakefulness)); } @@ -1431,10 +1445,24 @@ public final class PowerManagerService extends IPowerManager.Stub if (mWakefulness == WAKEFULNESS_NAPPING) { mWakefulness = WAKEFULNESS_DREAMING; mDirty |= DIRTY_WAKEFULNESS; + mBatteryLevelWhenDreamStarted = mBatteryLevel; updatePowerStateLocked(); continueDreaming = true; } else if (mWakefulness == WAKEFULNESS_DREAMING) { - continueDreaming = true; + if (!isBeingKeptAwakeLocked() + && mBatteryLevel < mBatteryLevelWhenDreamStarted + - DREAM_BATTERY_LEVEL_DRAIN_CUTOFF) { + // If the user activity timeout expired and the battery appears + // to be draining faster than it is charging then stop dreaming + // and go to sleep. + Slog.i(TAG, "Stopping dream because the battery appears to " + + "be draining faster than it is charging. " + + "Battery level when dream started: " + + mBatteryLevelWhenDreamStarted + "%. " + + "Battery level now: " + mBatteryLevel + "%."); + } else { + continueDreaming = true; + } } } if (!continueDreaming) { @@ -2094,6 +2122,8 @@ public final class PowerManagerService extends IPowerManager.Stub pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); pw.println(" mIsPowered=" + mIsPowered); pw.println(" mPlugType=" + mPlugType); + pw.println(" mBatteryLevel=" + mBatteryLevel); + pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); pw.println(" mStayOn=" + mStayOn); pw.println(" mProximityPositive=" + mProximityPositive); pw.println(" mBootCompleted=" + mBootCompleted); |