1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.power; 18 19 import com.android.internal.app.IAppOpsService; 20 import com.android.internal.app.IBatteryStats; 21 import com.android.internal.os.BackgroundThread; 22 import com.android.server.EventLogTags; 23 import com.android.server.ServiceThread; 24 import com.android.server.SystemService; 25 import com.android.server.am.BatteryStatsService; 26 import com.android.server.lights.Light; 27 import com.android.server.lights.LightsManager; 28 import com.android.server.Watchdog; 29 30 import android.Manifest; 31 import android.content.BroadcastReceiver; 32 import android.content.ContentResolver; 33 import android.content.Context; 34 import android.content.Intent; 35 import android.content.IntentFilter; 36 import android.content.pm.PackageManager; 37 import android.content.res.Resources; 38 import android.database.ContentObserver; 39 import android.hardware.SensorManager; 40 import android.hardware.SystemSensorManager; 41 import android.hardware.display.DisplayManagerInternal; 42 import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 43 import android.net.Uri; 44 import android.os.BatteryManager; 45 import android.os.BatteryManagerInternal; 46 import android.os.Binder; 47 import android.os.Handler; 48 import android.os.IBinder; 49 import android.os.IPowerManager; 50 import android.os.Looper; 51 import android.os.Message; 52 import android.os.PowerManager; 53 import android.os.PowerManagerInternal; 54 import android.os.Process; 55 import android.os.RemoteException; 56 import android.os.SystemClock; 57 import android.os.SystemProperties; 58 import android.os.Trace; 59 import android.os.UserHandle; 60 import android.os.WorkSource; 61 import android.provider.Settings; 62 import android.service.dreams.DreamManagerInternal; 63 import android.util.EventLog; 64 import android.util.Log; 65 import android.util.Slog; 66 import android.util.TimeUtils; 67 import android.view.Display; 68 import android.view.WindowManagerPolicy; 69 70 import java.io.FileDescriptor; 71 import java.io.PrintWriter; 72 import java.util.ArrayList; 73 74 import libcore.util.Objects; 75 76 /** 77 * The power manager service is responsible for coordinating power management 78 * functions on the device. 79 */ 80 public final class PowerManagerService extends SystemService 81 implements Watchdog.Monitor { 82 private static final String TAG = "PowerManagerService"; 83 84 private static final boolean DEBUG = false; 85 private static final boolean DEBUG_SPEW = DEBUG && true; 86 87 // Message: Sent when a user activity timeout occurs to update the power state. 88 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 89 // Message: Sent when the device enters or exits a dreaming or dozing state. 90 private static final int MSG_SANDMAN = 2; 91 92 // Dirty bit: mWakeLocks changed 93 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 94 // Dirty bit: mWakefulness changed 95 private static final int DIRTY_WAKEFULNESS = 1 << 1; 96 // Dirty bit: user activity was poked or may have timed out 97 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 98 // Dirty bit: actual display power state was updated asynchronously 99 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 100 // Dirty bit: mBootCompleted changed 101 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 102 // Dirty bit: settings changed 103 private static final int DIRTY_SETTINGS = 1 << 5; 104 // Dirty bit: mIsPowered changed 105 private static final int DIRTY_IS_POWERED = 1 << 6; 106 // Dirty bit: mStayOn changed 107 private static final int DIRTY_STAY_ON = 1 << 7; 108 // Dirty bit: battery state changed 109 private static final int DIRTY_BATTERY_STATE = 1 << 8; 110 // Dirty bit: proximity state changed 111 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 112 // Dirty bit: dock state changed 113 private static final int DIRTY_DOCK_STATE = 1 << 10; 114 115 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 116 // The screen should be off or in the process of being turned off by the display controller. 117 // The device typically passes through the dozing state first. 118 private static final int WAKEFULNESS_ASLEEP = 0; 119 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 120 // When the user activity timeout expires, the device may start dreaming or go to sleep. 121 private static final int WAKEFULNESS_AWAKE = 1; 122 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 123 // which ends the dream. The device goes to sleep when goToSleep() is called, when 124 // the dream ends or when unplugged. 125 // User activity may brighten the screen but does not end the dream. 126 private static final int WAKEFULNESS_DREAMING = 2; 127 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 128 // low-power "doze" dream to run which keeps the display on but lets the application 129 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 130 // The device fully goes to sleep if the dream cannot be started or ends on its own. 131 private static final int WAKEFULNESS_DOZING = 3; 132 133 // Summarizes the state of all active wakelocks. 134 private static final int WAKE_LOCK_CPU = 1 << 0; 135 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 136 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 137 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 138 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 139 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 140 private static final int WAKE_LOCK_DOZE = 1 << 6; 141 142 // Summarizes the user activity state. 143 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 144 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 145 private static final int USER_ACTIVITY_SCREEN_DREAM = 1 << 2; 146 147 // Default timeout in milliseconds. This is only used until the settings 148 // provider populates the actual default value (R.integer.def_screen_off_timeout). 149 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 150 private static final int DEFAULT_SLEEP_TIMEOUT = -1; 151 152 // Power hints defined in hardware/libhardware/include/hardware/power.h. 153 private static final int POWER_HINT_INTERACTION = 2; 154 private static final int POWER_HINT_LOW_POWER = 5; 155 156 private final Context mContext; 157 private final ServiceThread mHandlerThread; 158 private final PowerManagerHandler mHandler; 159 160 private LightsManager mLightsManager; 161 private BatteryManagerInternal mBatteryManagerInternal; 162 private DisplayManagerInternal mDisplayManagerInternal; 163 private IBatteryStats mBatteryStats; 164 private IAppOpsService mAppOps; 165 private WindowManagerPolicy mPolicy; 166 private Notifier mNotifier; 167 private WirelessChargerDetector mWirelessChargerDetector; 168 private SettingsObserver mSettingsObserver; 169 private DreamManagerInternal mDreamManager; 170 private Light mAttentionLight; 171 172 private final Object mLock = new Object(); 173 174 // A bitfield that indicates what parts of the power state have 175 // changed and need to be recalculated. 176 private int mDirty; 177 178 // Indicates whether the device is awake or asleep or somewhere in between. 179 // This is distinct from the screen power state, which is managed separately. 180 private int mWakefulness; 181 182 // True if the sandman has just been summoned for the first time since entering the 183 // dreaming or dozing state. Indicates whether a new dream should begin. 184 private boolean mSandmanSummoned; 185 186 // True if MSG_SANDMAN has been scheduled. 187 private boolean mSandmanScheduled; 188 189 // Table of all suspend blockers. 190 // There should only be a few of these. 191 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 192 193 // Table of all wake locks acquired by applications. 194 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 195 196 // A bitfield that summarizes the state of all active wakelocks. 197 private int mWakeLockSummary; 198 199 // True if the device is in an interactive state. 200 private boolean mInteractive; 201 private boolean mInteractiveChanging; 202 203 // If true, instructs the display controller to wait for the proximity sensor to 204 // go negative before turning the screen on. 205 private boolean mRequestWaitForNegativeProximity; 206 207 // Timestamp of the last time the device was awoken or put to sleep. 208 private long mLastWakeTime; 209 private long mLastSleepTime; 210 211 // Timestamp of the last call to user activity. 212 private long mLastUserActivityTime; 213 private long mLastUserActivityTimeNoChangeLights; 214 215 // Timestamp of last interactive power hint. 216 private long mLastInteractivePowerHintTime; 217 218 // A bitfield that summarizes the effect of the user activity timer. 219 private int mUserActivitySummary; 220 221 // The desired display power state. The actual state may lag behind the 222 // requested because it is updated asynchronously by the display power controller. 223 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 224 225 // True if the display power state has been fully applied, which means the display 226 // is actually on or actually off or whatever was requested. 227 private boolean mDisplayReady; 228 229 // The suspend blocker used to keep the CPU alive when an application has acquired 230 // a wake lock. 231 private final SuspendBlocker mWakeLockSuspendBlocker; 232 233 // True if the wake lock suspend blocker has been acquired. 234 private boolean mHoldingWakeLockSuspendBlocker; 235 236 // The suspend blocker used to keep the CPU alive when the display is on, the 237 // display is getting ready or there is user activity (in which case the display 238 // must be on). 239 private final SuspendBlocker mDisplaySuspendBlocker; 240 241 // True if the display suspend blocker has been acquired. 242 private boolean mHoldingDisplaySuspendBlocker; 243 244 // True if systemReady() has been called. 245 private boolean mSystemReady; 246 247 // True if boot completed occurred. We keep the screen on until this happens. 248 private boolean mBootCompleted; 249 250 // True if auto-suspend mode is enabled. 251 // Refer to autosuspend.h. 252 private boolean mHalAutoSuspendModeEnabled; 253 254 // True if interactive mode is enabled. 255 // Refer to power.h. 256 private boolean mHalInteractiveModeEnabled; 257 258 // True if the device is plugged into a power source. 259 private boolean mIsPowered; 260 261 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 262 private int mPlugType; 263 264 // The current battery level percentage. 265 private int mBatteryLevel; 266 267 // The battery level percentage at the time the dream started. 268 // This is used to terminate a dream and go to sleep if the battery is 269 // draining faster than it is charging and the user activity timeout has expired. 270 private int mBatteryLevelWhenDreamStarted; 271 272 // The current dock state. 273 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 274 275 // True to decouple auto-suspend mode from the display state. 276 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 277 278 // True to decouple interactive mode from the display state. 279 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 280 281 // True if the device should wake up when plugged or unplugged. 282 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 283 284 // True if the device should suspend when the screen is off due to proximity. 285 private boolean mSuspendWhenScreenOffDueToProximityConfig; 286 287 // True if dreams are supported on this device. 288 private boolean mDreamsSupportedConfig; 289 290 // Default value for dreams enabled 291 private boolean mDreamsEnabledByDefaultConfig; 292 293 // Default value for dreams activate-on-sleep 294 private boolean mDreamsActivatedOnSleepByDefaultConfig; 295 296 // Default value for dreams activate-on-dock 297 private boolean mDreamsActivatedOnDockByDefaultConfig; 298 299 // True if dreams can run while not plugged in. 300 private boolean mDreamsEnabledOnBatteryConfig; 301 302 // Minimum battery level to allow dreaming when powered. 303 // Use -1 to disable this safety feature. 304 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 305 306 // Minimum battery level to allow dreaming when not powered. 307 // Use -1 to disable this safety feature. 308 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 309 310 // If the battery level drops by this percentage and the user activity timeout 311 // has expired, then assume the device is receiving insufficient current to charge 312 // effectively and terminate the dream. Use -1 to disable this safety feature. 313 private int mDreamsBatteryLevelDrainCutoffConfig; 314 315 // True if dreams are enabled by the user. 316 private boolean mDreamsEnabledSetting; 317 318 // True if dreams should be activated on sleep. 319 private boolean mDreamsActivateOnSleepSetting; 320 321 // True if dreams should be activated on dock. 322 private boolean mDreamsActivateOnDockSetting; 323 324 // True if doze should not be started until after the screen off transition. 325 private boolean mDozeAfterScreenOffConfig; 326 327 // The minimum screen off timeout, in milliseconds. 328 private int mMinimumScreenOffTimeoutConfig; 329 330 // The screen dim duration, in milliseconds. 331 // This is subtracted from the end of the screen off timeout so the 332 // minimum screen off timeout should be longer than this. 333 private int mMaximumScreenDimDurationConfig; 334 335 // The maximum screen dim time expressed as a ratio relative to the screen 336 // off timeout. If the screen off timeout is very short then we want the 337 // dim timeout to also be quite short so that most of the time is spent on. 338 // Otherwise the user won't get much screen on time before dimming occurs. 339 private float mMaximumScreenDimRatioConfig; 340 341 // The screen off timeout setting value in milliseconds. 342 private int mScreenOffTimeoutSetting; 343 344 // The sleep timeout setting value in milliseconds. 345 private int mSleepTimeoutSetting; 346 347 // The maximum allowable screen off timeout according to the device 348 // administration policy. Overrides other settings. 349 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 350 351 // The stay on while plugged in setting. 352 // A bitfield of battery conditions under which to make the screen stay on. 353 private int mStayOnWhilePluggedInSetting; 354 355 // True if the device should stay on. 356 private boolean mStayOn; 357 358 // True if the proximity sensor reads a positive result. 359 private boolean mProximityPositive; 360 361 // Screen brightness setting limits. 362 private int mScreenBrightnessSettingMinimum; 363 private int mScreenBrightnessSettingMaximum; 364 private int mScreenBrightnessSettingDefault; 365 366 // The screen brightness setting, from 0 to 255. 367 // Use -1 if no value has been set. 368 private int mScreenBrightnessSetting; 369 370 // The screen auto-brightness adjustment setting, from -1 to 1. 371 // Use 0 if there is no adjustment. 372 private float mScreenAutoBrightnessAdjustmentSetting; 373 374 // The screen brightness mode. 375 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 376 private int mScreenBrightnessModeSetting; 377 378 // The screen brightness setting override from the window manager 379 // to allow the current foreground activity to override the brightness. 380 // Use -1 to disable. 381 private int mScreenBrightnessOverrideFromWindowManager = -1; 382 383 // The user activity timeout override from the window manager 384 // to allow the current foreground activity to override the user activity timeout. 385 // Use -1 to disable. 386 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 387 388 // The screen brightness setting override from the settings application 389 // to temporarily adjust the brightness until next updated, 390 // Use -1 to disable. 391 private int mTemporaryScreenBrightnessSettingOverride = -1; 392 393 // The screen brightness adjustment setting override from the settings 394 // application to temporarily adjust the auto-brightness adjustment factor 395 // until next updated, in the range -1..1. 396 // Use NaN to disable. 397 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 398 399 // The screen state to use while dozing. 400 private int mDozeScreenStateOverrideFromDreamManager = Display.STATE_UNKNOWN; 401 402 // The screen brightness to use while dozing. 403 private int mDozeScreenBrightnessOverrideFromDreamManager = PowerManager.BRIGHTNESS_DEFAULT; 404 405 // Time when we last logged a warning about calling userActivity() without permission. 406 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 407 408 // If true, the device is in low power mode. 409 private boolean mLowPowerModeEnabled; 410 411 // Current state of the low power mode setting. 412 private boolean mLowPowerModeSetting; 413 414 // Current state of whether the settings are allowing auto low power mode. 415 private boolean mAutoLowPowerModeConfigured; 416 417 // The user turned off low power mode below the trigger level 418 private boolean mAutoLowPowerModeSnoozing; 419 420 // True if the battery level is currently considered low. 421 private boolean mBatteryLevelLow; 422 423 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 424 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 425 426 private native void nativeInit(); 427 428 private static native void nativeAcquireSuspendBlocker(String name); 429 private static native void nativeReleaseSuspendBlocker(String name); 430 private static native void nativeSetInteractive(boolean enable); 431 private static native void nativeSetAutoSuspend(boolean enable); 432 private static native void nativeSendPowerHint(int hintId, int data); 433 434 public PowerManagerService(Context context) { 435 super(context); 436 mContext = context; 437 mHandlerThread = new ServiceThread(TAG, 438 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 439 mHandlerThread.start(); 440 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 441 442 synchronized (mLock) { 443 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 444 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 445 mDisplaySuspendBlocker.acquire(); 446 mHoldingDisplaySuspendBlocker = true; 447 mHalAutoSuspendModeEnabled = false; 448 mHalInteractiveModeEnabled = true; 449 450 mWakefulness = WAKEFULNESS_AWAKE; 451 mInteractive = true; 452 453 nativeInit(); 454 nativeSetAutoSuspend(false); 455 nativeSetInteractive(true); 456 } 457 } 458 459 @Override 460 public void onStart() { 461 publishBinderService(Context.POWER_SERVICE, new BinderService()); 462 publishLocalService(PowerManagerInternal.class, new LocalService()); 463 464 Watchdog.getInstance().addMonitor(this); 465 Watchdog.getInstance().addThread(mHandler); 466 } 467 468 @Override 469 public void onBootPhase(int phase) { 470 synchronized (mLock) { 471 if (phase == PHASE_BOOT_COMPLETED) { 472 final long now = SystemClock.uptimeMillis(); 473 mBootCompleted = true; 474 mDirty |= DIRTY_BOOT_COMPLETED; 475 userActivityNoUpdateLocked( 476 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 477 updatePowerStateLocked(); 478 } 479 } 480 } 481 482 public void systemReady(IAppOpsService appOps) { 483 synchronized (mLock) { 484 mSystemReady = true; 485 mAppOps = appOps; 486 mDreamManager = getLocalService(DreamManagerInternal.class); 487 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 488 mPolicy = getLocalService(WindowManagerPolicy.class); 489 mBatteryManagerInternal = getLocalService(BatteryManagerInternal.class); 490 491 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 492 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 493 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 494 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 495 496 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 497 498 // The notifier runs on the system server's main looper so as not to interfere 499 // with the animations and other critical functions of the power manager. 500 mBatteryStats = BatteryStatsService.getService(); 501 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 502 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 503 mPolicy); 504 505 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 506 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 507 mHandler); 508 mSettingsObserver = new SettingsObserver(mHandler); 509 510 mLightsManager = getLocalService(LightsManager.class); 511 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 512 513 // Initialize display power management. 514 mDisplayManagerInternal.initPowerManagement( 515 mDisplayPowerCallbacks, mHandler, sensorManager); 516 517 // Register for broadcasts from other components of the system. 518 IntentFilter filter = new IntentFilter(); 519 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 520 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 521 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 522 523 filter = new IntentFilter(); 524 filter.addAction(Intent.ACTION_DREAMING_STARTED); 525 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 526 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 527 528 filter = new IntentFilter(); 529 filter.addAction(Intent.ACTION_USER_SWITCHED); 530 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 531 532 filter = new IntentFilter(); 533 filter.addAction(Intent.ACTION_DOCK_EVENT); 534 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 535 536 // Register for settings changes. 537 final ContentResolver resolver = mContext.getContentResolver(); 538 resolver.registerContentObserver(Settings.Secure.getUriFor( 539 Settings.Secure.SCREENSAVER_ENABLED), 540 false, mSettingsObserver, UserHandle.USER_ALL); 541 resolver.registerContentObserver(Settings.Secure.getUriFor( 542 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 543 false, mSettingsObserver, UserHandle.USER_ALL); 544 resolver.registerContentObserver(Settings.Secure.getUriFor( 545 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 546 false, mSettingsObserver, UserHandle.USER_ALL); 547 resolver.registerContentObserver(Settings.System.getUriFor( 548 Settings.System.SCREEN_OFF_TIMEOUT), 549 false, mSettingsObserver, UserHandle.USER_ALL); 550 resolver.registerContentObserver(Settings.Secure.getUriFor( 551 Settings.Secure.SLEEP_TIMEOUT), 552 false, mSettingsObserver, UserHandle.USER_ALL); 553 resolver.registerContentObserver(Settings.Global.getUriFor( 554 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 555 false, mSettingsObserver, UserHandle.USER_ALL); 556 resolver.registerContentObserver(Settings.System.getUriFor( 557 Settings.System.SCREEN_BRIGHTNESS), 558 false, mSettingsObserver, UserHandle.USER_ALL); 559 resolver.registerContentObserver(Settings.System.getUriFor( 560 Settings.System.SCREEN_BRIGHTNESS_MODE), 561 false, mSettingsObserver, UserHandle.USER_ALL); 562 resolver.registerContentObserver(Settings.System.getUriFor( 563 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 564 false, mSettingsObserver, UserHandle.USER_ALL); 565 resolver.registerContentObserver(Settings.Global.getUriFor( 566 Settings.Global.LOW_POWER_MODE), 567 false, mSettingsObserver, UserHandle.USER_ALL); 568 resolver.registerContentObserver(Settings.Global.getUriFor( 569 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL), 570 false, mSettingsObserver, UserHandle.USER_ALL); 571 // Go. 572 readConfigurationLocked(); 573 updateSettingsLocked(); 574 mDirty |= DIRTY_BATTERY_STATE; 575 updatePowerStateLocked(); 576 } 577 } 578 579 private void readConfigurationLocked() { 580 final Resources resources = mContext.getResources(); 581 582 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 583 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 584 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 585 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 586 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 587 com.android.internal.R.bool.config_unplugTurnsOnScreen); 588 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 589 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 590 mDreamsSupportedConfig = resources.getBoolean( 591 com.android.internal.R.bool.config_dreamsSupported); 592 mDreamsEnabledByDefaultConfig = resources.getBoolean( 593 com.android.internal.R.bool.config_dreamsEnabledByDefault); 594 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 595 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 596 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 597 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 598 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 599 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 600 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 601 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 602 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 603 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 604 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 605 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 606 mDozeAfterScreenOffConfig = resources.getBoolean( 607 com.android.internal.R.bool.config_dozeAfterScreenOff); 608 mMinimumScreenOffTimeoutConfig = resources.getInteger( 609 com.android.internal.R.integer.config_minimumScreenOffTimeout); 610 mMaximumScreenDimDurationConfig = resources.getInteger( 611 com.android.internal.R.integer.config_maximumScreenDimDuration); 612 mMaximumScreenDimRatioConfig = resources.getFraction( 613 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 614 } 615 616 private void updateSettingsLocked() { 617 final ContentResolver resolver = mContext.getContentResolver(); 618 619 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 620 Settings.Secure.SCREENSAVER_ENABLED, 621 mDreamsEnabledByDefaultConfig ? 1 : 0, 622 UserHandle.USER_CURRENT) != 0); 623 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 624 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 625 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 626 UserHandle.USER_CURRENT) != 0); 627 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 628 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 629 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 630 UserHandle.USER_CURRENT) != 0); 631 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 632 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 633 UserHandle.USER_CURRENT); 634 mSleepTimeoutSetting = Settings.Secure.getIntForUser(resolver, 635 Settings.Secure.SLEEP_TIMEOUT, DEFAULT_SLEEP_TIMEOUT, 636 UserHandle.USER_CURRENT); 637 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 638 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 639 640 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 641 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 642 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 643 UserHandle.USER_CURRENT); 644 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 645 mTemporaryScreenBrightnessSettingOverride = -1; 646 } 647 648 final float oldScreenAutoBrightnessAdjustmentSetting = 649 mScreenAutoBrightnessAdjustmentSetting; 650 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 651 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 652 UserHandle.USER_CURRENT); 653 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 654 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 655 } 656 657 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 658 Settings.System.SCREEN_BRIGHTNESS_MODE, 659 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 660 661 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 662 Settings.Global.LOW_POWER_MODE, 0) != 0; 663 final boolean autoLowPowerModeConfigured = Settings.Global.getInt(resolver, 664 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, 0) != 0; 665 if (lowPowerModeEnabled != mLowPowerModeSetting 666 || autoLowPowerModeConfigured != mAutoLowPowerModeConfigured) { 667 mLowPowerModeSetting = lowPowerModeEnabled; 668 mAutoLowPowerModeConfigured = autoLowPowerModeConfigured; 669 updateLowPowerModeLocked(); 670 } 671 672 mDirty |= DIRTY_SETTINGS; 673 } 674 675 void updateLowPowerModeLocked() { 676 if (mIsPowered && mLowPowerModeSetting) { 677 if (DEBUG_SPEW) { 678 Slog.d(TAG, "updateLowPowerModeLocked: powered, turning setting off"); 679 } 680 // Turn setting off if powered 681 Settings.Global.putInt(mContext.getContentResolver(), 682 Settings.Global.LOW_POWER_MODE, 0); 683 mLowPowerModeSetting = false; 684 } 685 final boolean autoLowPowerModeEnabled = !mIsPowered && mAutoLowPowerModeConfigured 686 && !mAutoLowPowerModeSnoozing && mBatteryLevelLow; 687 final boolean lowPowerModeEnabled = mLowPowerModeSetting || autoLowPowerModeEnabled; 688 689 if (mLowPowerModeEnabled != lowPowerModeEnabled) { 690 mLowPowerModeEnabled = lowPowerModeEnabled; 691 powerHintInternal(POWER_HINT_LOW_POWER, lowPowerModeEnabled ? 1 : 0); 692 BackgroundThread.getHandler().post(new Runnable() { 693 @Override 694 public void run() { 695 Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGING) 696 .putExtra(PowerManager.EXTRA_POWER_SAVE_MODE, mLowPowerModeEnabled) 697 .addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 698 mContext.sendBroadcast(intent); 699 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 700 synchronized (mLock) { 701 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 702 mLowPowerModeListeners); 703 } 704 for (int i=0; i<listeners.size(); i++) { 705 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 706 } 707 intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 708 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 709 mContext.sendBroadcast(intent); 710 } 711 }); 712 } 713 } 714 715 private void handleSettingsChangedLocked() { 716 updateSettingsLocked(); 717 updatePowerStateLocked(); 718 } 719 720 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 721 WorkSource ws, String historyTag, int uid, int pid) { 722 synchronized (mLock) { 723 if (DEBUG_SPEW) { 724 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 725 + ", flags=0x" + Integer.toHexString(flags) 726 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 727 } 728 729 WakeLock wakeLock; 730 int index = findWakeLockIndexLocked(lock); 731 boolean notifyAcquire; 732 if (index >= 0) { 733 wakeLock = mWakeLocks.get(index); 734 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 735 // Update existing wake lock. This shouldn't happen but is harmless. 736 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 737 uid, pid, ws, historyTag); 738 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 739 } 740 notifyAcquire = false; 741 } else { 742 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 743 try { 744 lock.linkToDeath(wakeLock, 0); 745 } catch (RemoteException ex) { 746 throw new IllegalArgumentException("Wake lock is already dead."); 747 } 748 mWakeLocks.add(wakeLock); 749 notifyAcquire = true; 750 } 751 752 applyWakeLockFlagsOnAcquireLocked(wakeLock, uid); 753 mDirty |= DIRTY_WAKE_LOCKS; 754 updatePowerStateLocked(); 755 if (notifyAcquire) { 756 // This needs to be done last so we are sure we have acquired the 757 // kernel wake lock. Otherwise we have a race where the system may 758 // go to sleep between the time we start the accounting in battery 759 // stats and when we actually get around to telling the kernel to 760 // stay awake. 761 notifyWakeLockAcquiredLocked(wakeLock); 762 } 763 } 764 } 765 766 @SuppressWarnings("deprecation") 767 private static boolean isScreenLock(final WakeLock wakeLock) { 768 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 769 case PowerManager.FULL_WAKE_LOCK: 770 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 771 case PowerManager.SCREEN_DIM_WAKE_LOCK: 772 return true; 773 } 774 return false; 775 } 776 777 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock, int uid) { 778 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 779 && isScreenLock(wakeLock)) { 780 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), uid); 781 } 782 } 783 784 private void releaseWakeLockInternal(IBinder lock, int flags) { 785 synchronized (mLock) { 786 int index = findWakeLockIndexLocked(lock); 787 if (index < 0) { 788 if (DEBUG_SPEW) { 789 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 790 + " [not found], flags=0x" + Integer.toHexString(flags)); 791 } 792 return; 793 } 794 795 WakeLock wakeLock = mWakeLocks.get(index); 796 if (DEBUG_SPEW) { 797 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 798 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 799 } 800 801 if ((flags & PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY) != 0) { 802 mRequestWaitForNegativeProximity = true; 803 } 804 805 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 806 removeWakeLockLocked(wakeLock, index); 807 } 808 } 809 810 private void handleWakeLockDeath(WakeLock wakeLock) { 811 synchronized (mLock) { 812 if (DEBUG_SPEW) { 813 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 814 + " [" + wakeLock.mTag + "]"); 815 } 816 817 int index = mWakeLocks.indexOf(wakeLock); 818 if (index < 0) { 819 return; 820 } 821 822 removeWakeLockLocked(wakeLock, index); 823 } 824 } 825 826 private void removeWakeLockLocked(WakeLock wakeLock, int index) { 827 mWakeLocks.remove(index); 828 notifyWakeLockReleasedLocked(wakeLock); 829 830 applyWakeLockFlagsOnReleaseLocked(wakeLock); 831 mDirty |= DIRTY_WAKE_LOCKS; 832 updatePowerStateLocked(); 833 } 834 835 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 836 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 837 && isScreenLock(wakeLock)) { 838 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 839 PowerManager.USER_ACTIVITY_EVENT_OTHER, 840 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 841 wakeLock.mOwnerUid); 842 } 843 } 844 845 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag, 846 int callingUid) { 847 synchronized (mLock) { 848 int index = findWakeLockIndexLocked(lock); 849 if (index < 0) { 850 if (DEBUG_SPEW) { 851 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 852 + " [not found], ws=" + ws); 853 } 854 throw new IllegalArgumentException("Wake lock not active: " + lock 855 + " from uid " + callingUid); 856 } 857 858 WakeLock wakeLock = mWakeLocks.get(index); 859 if (DEBUG_SPEW) { 860 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 861 + " [" + wakeLock.mTag + "], ws=" + ws); 862 } 863 864 if (!wakeLock.hasSameWorkSource(ws)) { 865 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 866 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 867 ws, historyTag); 868 wakeLock.mHistoryTag = historyTag; 869 wakeLock.updateWorkSource(ws); 870 } 871 } 872 } 873 874 private int findWakeLockIndexLocked(IBinder lock) { 875 final int count = mWakeLocks.size(); 876 for (int i = 0; i < count; i++) { 877 if (mWakeLocks.get(i).mLock == lock) { 878 return i; 879 } 880 } 881 return -1; 882 } 883 884 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 885 if (mSystemReady) { 886 wakeLock.mNotifiedAcquired = true; 887 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 888 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 889 wakeLock.mHistoryTag); 890 } 891 } 892 893 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 894 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 895 if (mSystemReady && wakeLock.mNotifiedAcquired) { 896 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 897 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 898 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 899 } 900 } 901 902 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 903 if (mSystemReady && wakeLock.mNotifiedAcquired) { 904 wakeLock.mNotifiedAcquired = false; 905 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 906 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 907 wakeLock.mWorkSource, wakeLock.mHistoryTag); 908 } 909 } 910 911 @SuppressWarnings("deprecation") 912 private boolean isWakeLockLevelSupportedInternal(int level) { 913 synchronized (mLock) { 914 switch (level) { 915 case PowerManager.PARTIAL_WAKE_LOCK: 916 case PowerManager.SCREEN_DIM_WAKE_LOCK: 917 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 918 case PowerManager.FULL_WAKE_LOCK: 919 case PowerManager.DOZE_WAKE_LOCK: 920 return true; 921 922 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 923 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 924 925 default: 926 return false; 927 } 928 } 929 } 930 931 // Called from native code. 932 private void userActivityFromNative(long eventTime, int event, int flags) { 933 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 934 } 935 936 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 937 synchronized (mLock) { 938 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 939 updatePowerStateLocked(); 940 } 941 } 942 } 943 944 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 945 if (DEBUG_SPEW) { 946 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 947 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 948 + ", uid=" + uid); 949 } 950 951 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 952 || !mBootCompleted || !mSystemReady) { 953 return false; 954 } 955 956 Trace.traceBegin(Trace.TRACE_TAG_POWER, "userActivity"); 957 try { 958 if (eventTime > mLastInteractivePowerHintTime) { 959 powerHintInternal(POWER_HINT_INTERACTION, 0); 960 mLastInteractivePowerHintTime = eventTime; 961 } 962 963 mNotifier.onUserActivity(event, uid); 964 965 if (mWakefulness == WAKEFULNESS_ASLEEP 966 || mWakefulness == WAKEFULNESS_DOZING 967 || (flags & PowerManager.USER_ACTIVITY_FLAG_INDIRECT) != 0) { 968 return false; 969 } 970 971 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 972 if (eventTime > mLastUserActivityTimeNoChangeLights 973 && eventTime > mLastUserActivityTime) { 974 mLastUserActivityTimeNoChangeLights = eventTime; 975 mDirty |= DIRTY_USER_ACTIVITY; 976 return true; 977 } 978 } else { 979 if (eventTime > mLastUserActivityTime) { 980 mLastUserActivityTime = eventTime; 981 mDirty |= DIRTY_USER_ACTIVITY; 982 return true; 983 } 984 } 985 } finally { 986 Trace.traceEnd(Trace.TRACE_TAG_POWER); 987 } 988 return false; 989 } 990 991 private void wakeUpInternal(long eventTime, int uid) { 992 synchronized (mLock) { 993 if (wakeUpNoUpdateLocked(eventTime, uid)) { 994 updatePowerStateLocked(); 995 } 996 } 997 } 998 999 private boolean wakeUpNoUpdateLocked(long eventTime, int uid) { 1000 if (DEBUG_SPEW) { 1001 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1002 } 1003 1004 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 1005 || !mBootCompleted || !mSystemReady) { 1006 return false; 1007 } 1008 1009 Trace.traceBegin(Trace.TRACE_TAG_POWER, "wakeUp"); 1010 try { 1011 switch (mWakefulness) { 1012 case WAKEFULNESS_ASLEEP: 1013 Slog.i(TAG, "Waking up from sleep (uid " + uid +")..."); 1014 break; 1015 case WAKEFULNESS_DREAMING: 1016 Slog.i(TAG, "Waking up from dream (uid " + uid +")..."); 1017 break; 1018 case WAKEFULNESS_DOZING: 1019 Slog.i(TAG, "Waking up from dozing (uid " + uid +")..."); 1020 break; 1021 } 1022 1023 mLastWakeTime = eventTime; 1024 mDirty |= DIRTY_WAKEFULNESS; 1025 mWakefulness = WAKEFULNESS_AWAKE; 1026 setInteractiveStateLocked(true, 0); 1027 1028 userActivityNoUpdateLocked( 1029 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, uid); 1030 } finally { 1031 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1032 } 1033 return true; 1034 } 1035 1036 private void goToSleepInternal(long eventTime, int reason, int flags, int uid) { 1037 synchronized (mLock) { 1038 if (goToSleepNoUpdateLocked(eventTime, reason, flags, uid)) { 1039 updatePowerStateLocked(); 1040 } 1041 } 1042 } 1043 1044 // This method is called goToSleep for historical reasons but we actually start 1045 // dozing before really going to sleep. 1046 @SuppressWarnings("deprecation") 1047 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags, int uid) { 1048 if (DEBUG_SPEW) { 1049 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 1050 + ", reason=" + reason + ", flags=" + flags + ", uid=" + uid); 1051 } 1052 1053 if (eventTime < mLastWakeTime 1054 || mWakefulness == WAKEFULNESS_ASLEEP 1055 || mWakefulness == WAKEFULNESS_DOZING 1056 || !mBootCompleted || !mSystemReady) { 1057 return false; 1058 } 1059 1060 Trace.traceBegin(Trace.TRACE_TAG_POWER, "goToSleep"); 1061 try { 1062 switch (reason) { 1063 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1064 Slog.i(TAG, "Going to sleep due to device administration policy " 1065 + "(uid " + uid +")..."); 1066 break; 1067 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1068 Slog.i(TAG, "Going to sleep due to screen timeout (uid " + uid +")..."); 1069 break; 1070 case PowerManager.GO_TO_SLEEP_REASON_LID_SWITCH: 1071 Slog.i(TAG, "Going to sleep due to lid switch (uid " + uid +")..."); 1072 break; 1073 case PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON: 1074 Slog.i(TAG, "Going to sleep due to power button (uid " + uid +")..."); 1075 break; 1076 case PowerManager.GO_TO_SLEEP_REASON_HDMI: 1077 Slog.i(TAG, "Going to sleep due to HDMI standby (uid " + uid +")..."); 1078 break; 1079 default: 1080 Slog.i(TAG, "Going to sleep by application request (uid " + uid +")..."); 1081 reason = PowerManager.GO_TO_SLEEP_REASON_APPLICATION; 1082 break; 1083 } 1084 1085 mLastSleepTime = eventTime; 1086 mDirty |= DIRTY_WAKEFULNESS; 1087 mWakefulness = WAKEFULNESS_DOZING; 1088 mSandmanSummoned = true; 1089 setInteractiveStateLocked(false, reason); 1090 1091 // Report the number of wake locks that will be cleared by going to sleep. 1092 int numWakeLocksCleared = 0; 1093 final int numWakeLocks = mWakeLocks.size(); 1094 for (int i = 0; i < numWakeLocks; i++) { 1095 final WakeLock wakeLock = mWakeLocks.get(i); 1096 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1097 case PowerManager.FULL_WAKE_LOCK: 1098 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1099 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1100 numWakeLocksCleared += 1; 1101 break; 1102 } 1103 } 1104 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1105 1106 // Skip dozing if requested. 1107 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1108 reallyGoToSleepNoUpdateLocked(eventTime, uid); 1109 } 1110 } finally { 1111 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1112 } 1113 return true; 1114 } 1115 1116 private void napInternal(long eventTime, int uid) { 1117 synchronized (mLock) { 1118 if (napNoUpdateLocked(eventTime, uid)) { 1119 updatePowerStateLocked(); 1120 } 1121 } 1122 } 1123 1124 private boolean napNoUpdateLocked(long eventTime, int uid) { 1125 if (DEBUG_SPEW) { 1126 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1127 } 1128 1129 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1130 || !mBootCompleted || !mSystemReady) { 1131 return false; 1132 } 1133 1134 Trace.traceBegin(Trace.TRACE_TAG_POWER, "nap"); 1135 try { 1136 Slog.i(TAG, "Nap time (uid " + uid +")..."); 1137 1138 mDirty |= DIRTY_WAKEFULNESS; 1139 mWakefulness = WAKEFULNESS_DREAMING; 1140 mSandmanSummoned = true; 1141 setInteractiveStateLocked(true, 0); 1142 } finally { 1143 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1144 } 1145 return true; 1146 } 1147 1148 // Done dozing, drop everything and go to sleep. 1149 private boolean reallyGoToSleepNoUpdateLocked(long eventTime, int uid) { 1150 if (DEBUG_SPEW) { 1151 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime 1152 + ", uid=" + uid); 1153 } 1154 1155 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1156 || !mBootCompleted || !mSystemReady) { 1157 return false; 1158 } 1159 1160 Trace.traceBegin(Trace.TRACE_TAG_POWER, "reallyGoToSleep"); 1161 try { 1162 Slog.i(TAG, "Sleeping (uid " + uid +")..."); 1163 1164 mDirty |= DIRTY_WAKEFULNESS; 1165 mWakefulness = WAKEFULNESS_ASLEEP; 1166 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1167 } finally { 1168 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1169 } 1170 return true; 1171 } 1172 1173 private void setInteractiveStateLocked(boolean interactive, int reason) { 1174 if (mInteractive != interactive) { 1175 finishInteractiveStateChangeLocked(); 1176 1177 mInteractive = interactive; 1178 mInteractiveChanging = true; 1179 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1180 } 1181 } 1182 1183 private void finishInteractiveStateChangeLocked() { 1184 if (mInteractiveChanging) { 1185 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1186 mInteractiveChanging = false; 1187 } 1188 } 1189 1190 /** 1191 * Updates the global power state based on dirty bits recorded in mDirty. 1192 * 1193 * This is the main function that performs power state transitions. 1194 * We centralize them here so that we can recompute the power state completely 1195 * each time something important changes, and ensure that we do it the same 1196 * way each time. The point is to gather all of the transition logic here. 1197 */ 1198 private void updatePowerStateLocked() { 1199 if (!mSystemReady || mDirty == 0) { 1200 return; 1201 } 1202 if (!Thread.holdsLock(mLock)) { 1203 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1204 } 1205 1206 Trace.traceBegin(Trace.TRACE_TAG_POWER, "updatePowerState"); 1207 try { 1208 // Phase 0: Basic state updates. 1209 updateIsPoweredLocked(mDirty); 1210 updateStayOnLocked(mDirty); 1211 1212 // Phase 1: Update wakefulness. 1213 // Loop because the wake lock and user activity computations are influenced 1214 // by changes in wakefulness. 1215 final long now = SystemClock.uptimeMillis(); 1216 int dirtyPhase2 = 0; 1217 for (;;) { 1218 int dirtyPhase1 = mDirty; 1219 dirtyPhase2 |= dirtyPhase1; 1220 mDirty = 0; 1221 1222 updateWakeLockSummaryLocked(dirtyPhase1); 1223 updateUserActivitySummaryLocked(now, dirtyPhase1); 1224 if (!updateWakefulnessLocked(dirtyPhase1)) { 1225 break; 1226 } 1227 } 1228 1229 // Phase 2: Update display power state. 1230 boolean displayBecameReady = updateDisplayPowerStateLocked(dirtyPhase2); 1231 1232 // Phase 3: Update dream state (depends on display ready signal). 1233 updateDreamLocked(dirtyPhase2, displayBecameReady); 1234 1235 // Phase 4: Send notifications, if needed. 1236 if (mDisplayReady) { 1237 finishInteractiveStateChangeLocked(); 1238 } 1239 1240 // Phase 5: Update suspend blocker. 1241 // Because we might release the last suspend blocker here, we need to make sure 1242 // we finished everything else first! 1243 updateSuspendBlockerLocked(); 1244 } finally { 1245 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1246 } 1247 } 1248 1249 /** 1250 * Updates the value of mIsPowered. 1251 * Sets DIRTY_IS_POWERED if a change occurred. 1252 */ 1253 private void updateIsPoweredLocked(int dirty) { 1254 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1255 final boolean wasPowered = mIsPowered; 1256 final int oldPlugType = mPlugType; 1257 final boolean oldLevelLow = mBatteryLevelLow; 1258 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1259 mPlugType = mBatteryManagerInternal.getPlugType(); 1260 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1261 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1262 1263 if (DEBUG_SPEW) { 1264 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1265 + ", mIsPowered=" + mIsPowered 1266 + ", oldPlugType=" + oldPlugType 1267 + ", mPlugType=" + mPlugType 1268 + ", mBatteryLevel=" + mBatteryLevel); 1269 } 1270 1271 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1272 mDirty |= DIRTY_IS_POWERED; 1273 1274 // Update wireless dock detection state. 1275 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1276 mIsPowered, mPlugType, mBatteryLevel); 1277 1278 // Treat plugging and unplugging the devices as a user activity. 1279 // Users find it disconcerting when they plug or unplug the device 1280 // and it shuts off right away. 1281 // Some devices also wake the device when plugged or unplugged because 1282 // they don't have a charging LED. 1283 final long now = SystemClock.uptimeMillis(); 1284 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1285 dockedOnWirelessCharger)) { 1286 wakeUpNoUpdateLocked(now, Process.SYSTEM_UID); 1287 } 1288 userActivityNoUpdateLocked( 1289 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1290 1291 // Tell the notifier whether wireless charging has started so that 1292 // it can provide feedback to the user. 1293 if (dockedOnWirelessCharger) { 1294 mNotifier.onWirelessChargingStarted(); 1295 } 1296 } 1297 1298 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1299 if (oldLevelLow != mBatteryLevelLow && !mBatteryLevelLow) { 1300 if (DEBUG_SPEW) { 1301 Slog.d(TAG, "updateIsPoweredLocked: resetting low power snooze"); 1302 } 1303 mAutoLowPowerModeSnoozing = false; 1304 } 1305 updateLowPowerModeLocked(); 1306 } 1307 } 1308 } 1309 1310 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1311 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1312 // Don't wake when powered unless configured to do so. 1313 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1314 return false; 1315 } 1316 1317 // Don't wake when undocked from wireless charger. 1318 // See WirelessChargerDetector for justification. 1319 if (wasPowered && !mIsPowered 1320 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1321 return false; 1322 } 1323 1324 // Don't wake when docked on wireless charger unless we are certain of it. 1325 // See WirelessChargerDetector for justification. 1326 if (!wasPowered && mIsPowered 1327 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1328 && !dockedOnWirelessCharger) { 1329 return false; 1330 } 1331 1332 // If already dreaming and becoming powered, then don't wake. 1333 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1334 return false; 1335 } 1336 1337 // Otherwise wake up! 1338 return true; 1339 } 1340 1341 /** 1342 * Updates the value of mStayOn. 1343 * Sets DIRTY_STAY_ON if a change occurred. 1344 */ 1345 private void updateStayOnLocked(int dirty) { 1346 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1347 final boolean wasStayOn = mStayOn; 1348 if (mStayOnWhilePluggedInSetting != 0 1349 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1350 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1351 } else { 1352 mStayOn = false; 1353 } 1354 1355 if (mStayOn != wasStayOn) { 1356 mDirty |= DIRTY_STAY_ON; 1357 } 1358 } 1359 } 1360 1361 /** 1362 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1363 * Note that most wake-locks are ignored when the system is asleep. 1364 * 1365 * This function must have no other side-effects. 1366 */ 1367 @SuppressWarnings("deprecation") 1368 private void updateWakeLockSummaryLocked(int dirty) { 1369 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1370 mWakeLockSummary = 0; 1371 1372 final int numWakeLocks = mWakeLocks.size(); 1373 for (int i = 0; i < numWakeLocks; i++) { 1374 final WakeLock wakeLock = mWakeLocks.get(i); 1375 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1376 case PowerManager.PARTIAL_WAKE_LOCK: 1377 mWakeLockSummary |= WAKE_LOCK_CPU; 1378 break; 1379 case PowerManager.FULL_WAKE_LOCK: 1380 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1381 break; 1382 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1383 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1384 break; 1385 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1386 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1387 break; 1388 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1389 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1390 break; 1391 case PowerManager.DOZE_WAKE_LOCK: 1392 mWakeLockSummary |= WAKE_LOCK_DOZE; 1393 break; 1394 } 1395 } 1396 1397 // Cancel wake locks that make no sense based on the current state. 1398 if (mWakefulness != WAKEFULNESS_DOZING) { 1399 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1400 } 1401 if (mWakefulness == WAKEFULNESS_ASLEEP 1402 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1403 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1404 | WAKE_LOCK_BUTTON_BRIGHT); 1405 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1406 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1407 } 1408 } 1409 1410 // Infer implied wake locks where necessary based on the current state. 1411 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1412 if (mWakefulness == WAKEFULNESS_AWAKE) { 1413 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1414 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1415 mWakeLockSummary |= WAKE_LOCK_CPU; 1416 } 1417 } 1418 1419 if (DEBUG_SPEW) { 1420 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1421 + wakefulnessToString(mWakefulness) 1422 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1423 } 1424 } 1425 } 1426 1427 /** 1428 * Updates the value of mUserActivitySummary to summarize the user requested 1429 * state of the system such as whether the screen should be bright or dim. 1430 * Note that user activity is ignored when the system is asleep. 1431 * 1432 * This function must have no other side-effects. 1433 */ 1434 private void updateUserActivitySummaryLocked(long now, int dirty) { 1435 // Update the status of the user activity timeout timer. 1436 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1437 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1438 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1439 1440 long nextTimeout = 0; 1441 if (mWakefulness == WAKEFULNESS_AWAKE 1442 || mWakefulness == WAKEFULNESS_DREAMING 1443 || mWakefulness == WAKEFULNESS_DOZING) { 1444 final int sleepTimeout = getSleepTimeoutLocked(); 1445 final int screenOffTimeout = getScreenOffTimeoutLocked(sleepTimeout); 1446 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1447 1448 mUserActivitySummary = 0; 1449 if (mLastUserActivityTime >= mLastWakeTime) { 1450 nextTimeout = mLastUserActivityTime 1451 + screenOffTimeout - screenDimDuration; 1452 if (now < nextTimeout) { 1453 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1454 } else { 1455 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1456 if (now < nextTimeout) { 1457 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1458 } 1459 } 1460 } 1461 if (mUserActivitySummary == 0 1462 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1463 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1464 if (now < nextTimeout) { 1465 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT) { 1466 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1467 } else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) { 1468 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1469 } 1470 } 1471 } 1472 if (mUserActivitySummary == 0) { 1473 if (sleepTimeout >= 0) { 1474 final long anyUserActivity = Math.max(mLastUserActivityTime, 1475 mLastUserActivityTimeNoChangeLights); 1476 if (anyUserActivity >= mLastWakeTime) { 1477 nextTimeout = anyUserActivity + sleepTimeout; 1478 if (now < nextTimeout) { 1479 mUserActivitySummary = USER_ACTIVITY_SCREEN_DREAM; 1480 } 1481 } 1482 } else { 1483 mUserActivitySummary = USER_ACTIVITY_SCREEN_DREAM; 1484 nextTimeout = -1; 1485 } 1486 } 1487 if (mUserActivitySummary != 0 && nextTimeout >= 0) { 1488 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1489 msg.setAsynchronous(true); 1490 mHandler.sendMessageAtTime(msg, nextTimeout); 1491 } 1492 } else { 1493 mUserActivitySummary = 0; 1494 } 1495 1496 if (DEBUG_SPEW) { 1497 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1498 + wakefulnessToString(mWakefulness) 1499 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1500 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1501 } 1502 } 1503 } 1504 1505 /** 1506 * Called when a user activity timeout has occurred. 1507 * Simply indicates that something about user activity has changed so that the new 1508 * state can be recomputed when the power state is updated. 1509 * 1510 * This function must have no other side-effects besides setting the dirty 1511 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1512 */ 1513 private void handleUserActivityTimeout() { // runs on handler thread 1514 synchronized (mLock) { 1515 if (DEBUG_SPEW) { 1516 Slog.d(TAG, "handleUserActivityTimeout"); 1517 } 1518 1519 mDirty |= DIRTY_USER_ACTIVITY; 1520 updatePowerStateLocked(); 1521 } 1522 } 1523 1524 private int getSleepTimeoutLocked() { 1525 int timeout = mSleepTimeoutSetting; 1526 if (timeout <= 0) { 1527 return -1; 1528 } 1529 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1530 } 1531 1532 private int getScreenOffTimeoutLocked(int sleepTimeout) { 1533 int timeout = mScreenOffTimeoutSetting; 1534 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1535 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1536 } 1537 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1538 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1539 } 1540 if (sleepTimeout >= 0) { 1541 timeout = Math.min(timeout, sleepTimeout); 1542 } 1543 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1544 } 1545 1546 private int getScreenDimDurationLocked(int screenOffTimeout) { 1547 return Math.min(mMaximumScreenDimDurationConfig, 1548 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1549 } 1550 1551 /** 1552 * Updates the wakefulness of the device. 1553 * 1554 * This is the function that decides whether the device should start dreaming 1555 * based on the current wake locks and user activity state. It may modify mDirty 1556 * if the wakefulness changes. 1557 * 1558 * Returns true if the wakefulness changed and we need to restart power state calculation. 1559 */ 1560 private boolean updateWakefulnessLocked(int dirty) { 1561 boolean changed = false; 1562 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1563 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1564 | DIRTY_DOCK_STATE)) != 0) { 1565 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1566 if (DEBUG_SPEW) { 1567 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1568 } 1569 final long time = SystemClock.uptimeMillis(); 1570 if (shouldNapAtBedTimeLocked()) { 1571 changed = napNoUpdateLocked(time, Process.SYSTEM_UID); 1572 } else { 1573 changed = goToSleepNoUpdateLocked(time, 1574 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1575 } 1576 } 1577 } 1578 return changed; 1579 } 1580 1581 /** 1582 * Returns true if the device should automatically nap and start dreaming when the user 1583 * activity timeout has expired and it's bedtime. 1584 */ 1585 private boolean shouldNapAtBedTimeLocked() { 1586 return mDreamsActivateOnSleepSetting 1587 || (mDreamsActivateOnDockSetting 1588 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1589 } 1590 1591 /** 1592 * Returns true if the device should go to sleep now. 1593 * Also used when exiting a dream to determine whether we should go back 1594 * to being fully awake or else go to sleep for good. 1595 */ 1596 private boolean isItBedTimeYetLocked() { 1597 return mBootCompleted && !isBeingKeptAwakeLocked(); 1598 } 1599 1600 /** 1601 * Returns true if the device is being kept awake by a wake lock, user activity 1602 * or the stay on while powered setting. We also keep the phone awake when 1603 * the proximity sensor returns a positive result so that the device does not 1604 * lock while in a phone call. This function only controls whether the device 1605 * will go to sleep or dream which is independent of whether it will be allowed 1606 * to suspend. 1607 */ 1608 private boolean isBeingKeptAwakeLocked() { 1609 return mStayOn 1610 || mProximityPositive 1611 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1612 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1613 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1614 } 1615 1616 /** 1617 * Determines whether to post a message to the sandman to update the dream state. 1618 */ 1619 private void updateDreamLocked(int dirty, boolean displayBecameReady) { 1620 if ((dirty & (DIRTY_WAKEFULNESS 1621 | DIRTY_USER_ACTIVITY 1622 | DIRTY_WAKE_LOCKS 1623 | DIRTY_BOOT_COMPLETED 1624 | DIRTY_SETTINGS 1625 | DIRTY_IS_POWERED 1626 | DIRTY_STAY_ON 1627 | DIRTY_PROXIMITY_POSITIVE 1628 | DIRTY_BATTERY_STATE)) != 0 || displayBecameReady) { 1629 if (mDisplayReady) { 1630 scheduleSandmanLocked(); 1631 } 1632 } 1633 } 1634 1635 private void scheduleSandmanLocked() { 1636 if (!mSandmanScheduled) { 1637 mSandmanScheduled = true; 1638 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1639 msg.setAsynchronous(true); 1640 mHandler.sendMessage(msg); 1641 } 1642 } 1643 1644 /** 1645 * Called when the device enters or exits a dreaming or dozing state. 1646 * 1647 * We do this asynchronously because we must call out of the power manager to start 1648 * the dream and we don't want to hold our lock while doing so. There is a risk that 1649 * the device will wake or go to sleep in the meantime so we have to handle that case. 1650 */ 1651 private void handleSandman() { // runs on handler thread 1652 // Handle preconditions. 1653 final boolean startDreaming; 1654 final int wakefulness; 1655 synchronized (mLock) { 1656 mSandmanScheduled = false; 1657 wakefulness = mWakefulness; 1658 if (mSandmanSummoned && mDisplayReady) { 1659 startDreaming = canDreamLocked() || canDozeLocked(); 1660 mSandmanSummoned = false; 1661 } else { 1662 startDreaming = false; 1663 } 1664 } 1665 1666 // Start dreaming if needed. 1667 // We only control the dream on the handler thread, so we don't need to worry about 1668 // concurrent attempts to start or stop the dream. 1669 final boolean isDreaming; 1670 if (mDreamManager != null) { 1671 // Restart the dream whenever the sandman is summoned. 1672 if (startDreaming) { 1673 mDreamManager.stopDream(false /*immediate*/); 1674 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1675 } 1676 isDreaming = mDreamManager.isDreaming(); 1677 } else { 1678 isDreaming = false; 1679 } 1680 1681 // Update dream state. 1682 synchronized (mLock) { 1683 // Remember the initial battery level when the dream started. 1684 if (startDreaming && isDreaming) { 1685 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1686 if (wakefulness == WAKEFULNESS_DOZING) { 1687 Slog.i(TAG, "Dozing..."); 1688 } else { 1689 Slog.i(TAG, "Dreaming..."); 1690 } 1691 } 1692 1693 // If preconditions changed, wait for the next iteration to determine 1694 // whether the dream should continue (or be restarted). 1695 if (mSandmanSummoned || mWakefulness != wakefulness) { 1696 return; // wait for next cycle 1697 } 1698 1699 // Determine whether the dream should continue. 1700 if (wakefulness == WAKEFULNESS_DREAMING) { 1701 if (isDreaming && canDreamLocked()) { 1702 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1703 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1704 - mDreamsBatteryLevelDrainCutoffConfig 1705 && !isBeingKeptAwakeLocked()) { 1706 // If the user activity timeout expired and the battery appears 1707 // to be draining faster than it is charging then stop dreaming 1708 // and go to sleep. 1709 Slog.i(TAG, "Stopping dream because the battery appears to " 1710 + "be draining faster than it is charging. " 1711 + "Battery level when dream started: " 1712 + mBatteryLevelWhenDreamStarted + "%. " 1713 + "Battery level now: " + mBatteryLevel + "%."); 1714 } else { 1715 return; // continue dreaming 1716 } 1717 } 1718 1719 // Dream has ended or will be stopped. Update the power state. 1720 if (isItBedTimeYetLocked()) { 1721 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1722 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1723 updatePowerStateLocked(); 1724 } else { 1725 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1726 updatePowerStateLocked(); 1727 } 1728 } else if (wakefulness == WAKEFULNESS_DOZING) { 1729 if (isDreaming) { 1730 return; // continue dozing 1731 } 1732 1733 // Doze has ended or will be stopped. Update the power state. 1734 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1735 updatePowerStateLocked(); 1736 } 1737 } 1738 1739 // Stop dream. 1740 if (isDreaming) { 1741 mDreamManager.stopDream(false /*immediate*/); 1742 } 1743 } 1744 1745 /** 1746 * Returns true if the device is allowed to dream in its current state. 1747 */ 1748 private boolean canDreamLocked() { 1749 if (mWakefulness != WAKEFULNESS_DREAMING 1750 || !mDreamsSupportedConfig 1751 || !mDreamsEnabledSetting 1752 || !mDisplayPowerRequest.isBrightOrDim() 1753 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1754 | USER_ACTIVITY_SCREEN_DIM | USER_ACTIVITY_SCREEN_DREAM)) == 0 1755 || !mBootCompleted) { 1756 return false; 1757 } 1758 if (!isBeingKeptAwakeLocked()) { 1759 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1760 return false; 1761 } 1762 if (!mIsPowered 1763 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1764 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1765 return false; 1766 } 1767 if (mIsPowered 1768 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1769 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1770 return false; 1771 } 1772 } 1773 return true; 1774 } 1775 1776 /** 1777 * Returns true if the device is allowed to doze in its current state. 1778 */ 1779 private boolean canDozeLocked() { 1780 return mWakefulness == WAKEFULNESS_DOZING; 1781 } 1782 1783 /** 1784 * Updates the display power state asynchronously. 1785 * When the update is finished, mDisplayReady will be set to true. The display 1786 * controller posts a message to tell us when the actual display power state 1787 * has been updated so we come back here to double-check and finish up. 1788 * 1789 * This function recalculates the display power state each time. 1790 * 1791 * @return True if the display became ready. 1792 */ 1793 private boolean updateDisplayPowerStateLocked(int dirty) { 1794 final boolean oldDisplayReady = mDisplayReady; 1795 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1796 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1797 | DIRTY_SETTINGS)) != 0) { 1798 mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); 1799 1800 int screenBrightness = mScreenBrightnessSettingDefault; 1801 float screenAutoBrightnessAdjustment = 0.0f; 1802 boolean autoBrightness = (mScreenBrightnessModeSetting == 1803 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1804 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1805 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1806 autoBrightness = false; 1807 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1808 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1809 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1810 screenBrightness = mScreenBrightnessSetting; 1811 } 1812 if (autoBrightness) { 1813 screenBrightness = mScreenBrightnessSettingDefault; 1814 if (isValidAutoBrightnessAdjustment( 1815 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1816 screenAutoBrightnessAdjustment = 1817 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1818 } else if (isValidAutoBrightnessAdjustment( 1819 mScreenAutoBrightnessAdjustmentSetting)) { 1820 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1821 } 1822 } 1823 screenBrightness = Math.max(Math.min(screenBrightness, 1824 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1825 screenAutoBrightnessAdjustment = Math.max(Math.min( 1826 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1827 mDisplayPowerRequest.screenBrightness = screenBrightness; 1828 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1829 screenAutoBrightnessAdjustment; 1830 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1831 1832 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1833 1834 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1835 1836 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) { 1837 mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager; 1838 mDisplayPowerRequest.dozeScreenBrightness = 1839 mDozeScreenBrightnessOverrideFromDreamManager; 1840 } else { 1841 mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN; 1842 mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 1843 } 1844 1845 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1846 mRequestWaitForNegativeProximity); 1847 mRequestWaitForNegativeProximity = false; 1848 1849 if (DEBUG_SPEW) { 1850 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1851 + ", policy=" + mDisplayPowerRequest.policy 1852 + ", mWakefulness=" + mWakefulness 1853 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1854 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1855 + ", mBootCompleted=" + mBootCompleted); 1856 } 1857 } 1858 return mDisplayReady && !oldDisplayReady; 1859 } 1860 1861 private static boolean isValidBrightness(int value) { 1862 return value >= 0 && value <= 255; 1863 } 1864 1865 private static boolean isValidAutoBrightnessAdjustment(float value) { 1866 // Handles NaN by always returning false. 1867 return value >= -1.0f && value <= 1.0f; 1868 } 1869 1870 private int getDesiredScreenPolicyLocked() { 1871 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1872 return DisplayPowerRequest.POLICY_OFF; 1873 } 1874 1875 if (mWakefulness == WAKEFULNESS_DOZING) { 1876 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1877 return DisplayPowerRequest.POLICY_DOZE; 1878 } 1879 if (mDozeAfterScreenOffConfig) { 1880 return DisplayPowerRequest.POLICY_OFF; 1881 } 1882 // Fall through and preserve the current screen policy if not configured to 1883 // doze after screen off. This causes the screen off transition to be skipped. 1884 } 1885 1886 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1887 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1888 || !mBootCompleted) { 1889 return DisplayPowerRequest.POLICY_BRIGHT; 1890 } 1891 1892 return DisplayPowerRequest.POLICY_DIM; 1893 } 1894 1895 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1896 new DisplayManagerInternal.DisplayPowerCallbacks() { 1897 private int mDisplayState = Display.STATE_UNKNOWN; 1898 1899 @Override 1900 public void onStateChanged() { 1901 synchronized (mLock) { 1902 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1903 updatePowerStateLocked(); 1904 } 1905 } 1906 1907 @Override 1908 public void onProximityPositive() { 1909 synchronized (mLock) { 1910 mProximityPositive = true; 1911 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1912 updatePowerStateLocked(); 1913 } 1914 } 1915 1916 @Override 1917 public void onProximityNegative() { 1918 synchronized (mLock) { 1919 mProximityPositive = false; 1920 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1921 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1922 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1923 updatePowerStateLocked(); 1924 } 1925 } 1926 1927 @Override 1928 public void onDisplayStateChange(int state) { 1929 // This method is only needed to support legacy display blanking behavior 1930 // where the display's power state is coupled to suspend or to the power HAL. 1931 // The order of operations matters here. 1932 synchronized (mLock) { 1933 if (mDisplayState != state) { 1934 mDisplayState = state; 1935 if (state == Display.STATE_OFF) { 1936 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1937 setHalInteractiveModeLocked(false); 1938 } 1939 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1940 setHalAutoSuspendModeLocked(true); 1941 } 1942 } else { 1943 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1944 setHalAutoSuspendModeLocked(false); 1945 } 1946 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1947 setHalInteractiveModeLocked(true); 1948 } 1949 } 1950 } 1951 } 1952 } 1953 1954 @Override 1955 public void acquireSuspendBlocker() { 1956 mDisplaySuspendBlocker.acquire(); 1957 } 1958 1959 @Override 1960 public void releaseSuspendBlocker() { 1961 mDisplaySuspendBlocker.release(); 1962 } 1963 1964 @Override 1965 public String toString() { 1966 synchronized (this) { 1967 return "state=" + Display.stateToString(mDisplayState); 1968 } 1969 } 1970 }; 1971 1972 private boolean shouldUseProximitySensorLocked() { 1973 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1974 } 1975 1976 /** 1977 * Updates the suspend blocker that keeps the CPU alive. 1978 * 1979 * This function must have no other side-effects. 1980 */ 1981 private void updateSuspendBlockerLocked() { 1982 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1983 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1984 final boolean autoSuspend = !needDisplaySuspendBlocker; 1985 1986 // Disable auto-suspend if needed. 1987 if (!autoSuspend) { 1988 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1989 setHalAutoSuspendModeLocked(false); 1990 } 1991 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1992 setHalInteractiveModeLocked(true); 1993 } 1994 } 1995 1996 // First acquire suspend blockers if needed. 1997 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1998 mWakeLockSuspendBlocker.acquire(); 1999 mHoldingWakeLockSuspendBlocker = true; 2000 } 2001 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 2002 mDisplaySuspendBlocker.acquire(); 2003 mHoldingDisplaySuspendBlocker = true; 2004 } 2005 2006 // Then release suspend blockers if needed. 2007 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 2008 mWakeLockSuspendBlocker.release(); 2009 mHoldingWakeLockSuspendBlocker = false; 2010 } 2011 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 2012 mDisplaySuspendBlocker.release(); 2013 mHoldingDisplaySuspendBlocker = false; 2014 } 2015 2016 // Enable auto-suspend if needed. 2017 if (autoSuspend) { 2018 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 2019 setHalInteractiveModeLocked(false); 2020 } 2021 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 2022 setHalAutoSuspendModeLocked(true); 2023 } 2024 } 2025 } 2026 2027 /** 2028 * Return true if we must keep a suspend blocker active on behalf of the display. 2029 * We do so if the screen is on or is in transition between states. 2030 */ 2031 private boolean needDisplaySuspendBlockerLocked() { 2032 if (!mDisplayReady) { 2033 return true; 2034 } 2035 if (mDisplayPowerRequest.isBrightOrDim()) { 2036 // If we asked for the screen to be on but it is off due to the proximity 2037 // sensor then we may suspend but only if the configuration allows it. 2038 // On some hardware it may not be safe to suspend because the proximity 2039 // sensor may not be correctly configured as a wake-up source. 2040 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 2041 || !mSuspendWhenScreenOffDueToProximityConfig) { 2042 return true; 2043 } 2044 } 2045 // Let the system suspend if the screen is off or dozing. 2046 return false; 2047 } 2048 2049 private void setHalAutoSuspendModeLocked(boolean enable) { 2050 if (enable != mHalAutoSuspendModeEnabled) { 2051 if (DEBUG) { 2052 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 2053 } 2054 mHalAutoSuspendModeEnabled = enable; 2055 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalAutoSuspend(" + enable + ")"); 2056 try { 2057 nativeSetAutoSuspend(enable); 2058 } finally { 2059 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2060 } 2061 } 2062 } 2063 2064 private void setHalInteractiveModeLocked(boolean enable) { 2065 if (enable != mHalInteractiveModeEnabled) { 2066 if (DEBUG) { 2067 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 2068 } 2069 mHalInteractiveModeEnabled = enable; 2070 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalInteractive(" + enable + ")"); 2071 try { 2072 nativeSetInteractive(enable); 2073 } finally { 2074 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2075 } 2076 } 2077 } 2078 2079 private boolean isInteractiveInternal() { 2080 synchronized (mLock) { 2081 return mInteractive; 2082 } 2083 } 2084 2085 private boolean isLowPowerModeInternal() { 2086 synchronized (mLock) { 2087 return mLowPowerModeEnabled; 2088 } 2089 } 2090 2091 private boolean setLowPowerModeInternal(boolean mode) { 2092 synchronized (mLock) { 2093 if (DEBUG) Slog.d(TAG, "setLowPowerModeInternal " + mode + " mIsPowered=" + mIsPowered); 2094 if (mIsPowered) { 2095 return false; 2096 } 2097 Settings.Global.putInt(mContext.getContentResolver(), 2098 Settings.Global.LOW_POWER_MODE, mode ? 1 : 0); 2099 mLowPowerModeSetting = mode; 2100 2101 if (mAutoLowPowerModeConfigured && mBatteryLevelLow) { 2102 if (mode && mAutoLowPowerModeSnoozing) { 2103 if (DEBUG_SPEW) { 2104 Slog.d(TAG, "setLowPowerModeInternal: clearing low power mode snooze"); 2105 } 2106 mAutoLowPowerModeSnoozing = false; 2107 } else if (!mode && !mAutoLowPowerModeSnoozing) { 2108 if (DEBUG_SPEW) { 2109 Slog.d(TAG, "setLowPowerModeInternal: snoozing low power mode"); 2110 } 2111 mAutoLowPowerModeSnoozing = true; 2112 } 2113 } 2114 2115 updateLowPowerModeLocked(); 2116 return true; 2117 } 2118 } 2119 2120 private void handleBatteryStateChangedLocked() { 2121 mDirty |= DIRTY_BATTERY_STATE; 2122 updatePowerStateLocked(); 2123 } 2124 2125 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 2126 final String reason, boolean wait) { 2127 if (mHandler == null || !mSystemReady) { 2128 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 2129 } 2130 2131 Runnable runnable = new Runnable() { 2132 @Override 2133 public void run() { 2134 synchronized (this) { 2135 if (shutdown) { 2136 ShutdownThread.shutdown(mContext, confirm); 2137 } else { 2138 ShutdownThread.reboot(mContext, reason, confirm); 2139 } 2140 } 2141 } 2142 }; 2143 2144 // ShutdownThread must run on a looper capable of displaying the UI. 2145 Message msg = Message.obtain(mHandler, runnable); 2146 msg.setAsynchronous(true); 2147 mHandler.sendMessage(msg); 2148 2149 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2150 if (wait) { 2151 synchronized (runnable) { 2152 while (true) { 2153 try { 2154 runnable.wait(); 2155 } catch (InterruptedException e) { 2156 } 2157 } 2158 } 2159 } 2160 } 2161 2162 private void crashInternal(final String message) { 2163 Thread t = new Thread("PowerManagerService.crash()") { 2164 @Override 2165 public void run() { 2166 throw new RuntimeException(message); 2167 } 2168 }; 2169 try { 2170 t.start(); 2171 t.join(); 2172 } catch (InterruptedException e) { 2173 Slog.wtf(TAG, e); 2174 } 2175 } 2176 2177 private void setStayOnSettingInternal(int val) { 2178 Settings.Global.putInt(mContext.getContentResolver(), 2179 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2180 } 2181 2182 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2183 synchronized (mLock) { 2184 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2185 mDirty |= DIRTY_SETTINGS; 2186 updatePowerStateLocked(); 2187 } 2188 } 2189 2190 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2191 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2192 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2193 } 2194 2195 private void setAttentionLightInternal(boolean on, int color) { 2196 Light light; 2197 synchronized (mLock) { 2198 if (!mSystemReady) { 2199 return; 2200 } 2201 light = mAttentionLight; 2202 } 2203 2204 // Control light outside of lock. 2205 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2206 } 2207 2208 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2209 synchronized (mLock) { 2210 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2211 mScreenBrightnessOverrideFromWindowManager = brightness; 2212 mDirty |= DIRTY_SETTINGS; 2213 updatePowerStateLocked(); 2214 } 2215 } 2216 } 2217 2218 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2219 synchronized (mLock) { 2220 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2221 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2222 mDirty |= DIRTY_SETTINGS; 2223 updatePowerStateLocked(); 2224 } 2225 } 2226 } 2227 2228 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2229 synchronized (mLock) { 2230 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2231 mTemporaryScreenBrightnessSettingOverride = brightness; 2232 mDirty |= DIRTY_SETTINGS; 2233 updatePowerStateLocked(); 2234 } 2235 } 2236 } 2237 2238 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2239 synchronized (mLock) { 2240 // Note: This condition handles NaN because NaN is not equal to any other 2241 // value, including itself. 2242 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2243 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2244 mDirty |= DIRTY_SETTINGS; 2245 updatePowerStateLocked(); 2246 } 2247 } 2248 } 2249 2250 private void setDozeOverrideFromDreamManagerInternal( 2251 int screenState, int screenBrightness) { 2252 synchronized (mLock) { 2253 if (mDozeScreenStateOverrideFromDreamManager != screenState 2254 || mDozeScreenBrightnessOverrideFromDreamManager != screenBrightness) { 2255 mDozeScreenStateOverrideFromDreamManager = screenState; 2256 mDozeScreenBrightnessOverrideFromDreamManager = screenBrightness; 2257 mDirty |= DIRTY_SETTINGS; 2258 updatePowerStateLocked(); 2259 } 2260 } 2261 } 2262 2263 private void powerHintInternal(int hintId, int data) { 2264 nativeSendPowerHint(hintId, data); 2265 } 2266 2267 /** 2268 * Low-level function turn the device off immediately, without trying 2269 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2270 */ 2271 public static void lowLevelShutdown() { 2272 SystemProperties.set("sys.powerctl", "shutdown"); 2273 } 2274 2275 /** 2276 * Low-level function to reboot the device. On success, this 2277 * function doesn't return. If more than 20 seconds passes from 2278 * the time a reboot is requested (120 seconds for reboot to 2279 * recovery), this method returns. 2280 * 2281 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2282 */ 2283 public static void lowLevelReboot(String reason) { 2284 if (reason == null) { 2285 reason = ""; 2286 } 2287 long duration; 2288 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2289 // If we are rebooting to go into recovery, instead of 2290 // setting sys.powerctl directly we'll start the 2291 // pre-recovery service which will do some preparation for 2292 // recovery and then reboot for us. 2293 // 2294 // This preparation can take more than 20 seconds if 2295 // there's a very large update package, so lengthen the 2296 // timeout. 2297 SystemProperties.set("ctl.start", "pre-recovery"); 2298 duration = 120 * 1000L; 2299 } else { 2300 SystemProperties.set("sys.powerctl", "reboot," + reason); 2301 duration = 20 * 1000L; 2302 } 2303 try { 2304 Thread.sleep(duration); 2305 } catch (InterruptedException e) { 2306 Thread.currentThread().interrupt(); 2307 } 2308 } 2309 2310 @Override // Watchdog.Monitor implementation 2311 public void monitor() { 2312 // Grab and release lock for watchdog monitor to detect deadlocks. 2313 synchronized (mLock) { 2314 } 2315 } 2316 2317 private void dumpInternal(PrintWriter pw) { 2318 pw.println("POWER MANAGER (dumpsys power)\n"); 2319 2320 final WirelessChargerDetector wcd; 2321 synchronized (mLock) { 2322 pw.println("Power Manager State:"); 2323 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2324 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2325 pw.println(" mInteractive=" + mInteractive); 2326 pw.println(" mIsPowered=" + mIsPowered); 2327 pw.println(" mPlugType=" + mPlugType); 2328 pw.println(" mBatteryLevel=" + mBatteryLevel); 2329 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2330 pw.println(" mDockState=" + mDockState); 2331 pw.println(" mStayOn=" + mStayOn); 2332 pw.println(" mProximityPositive=" + mProximityPositive); 2333 pw.println(" mBootCompleted=" + mBootCompleted); 2334 pw.println(" mSystemReady=" + mSystemReady); 2335 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2336 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2337 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2338 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2339 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2340 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2341 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2342 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2343 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2344 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2345 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2346 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2347 pw.println(" mLastUserActivityTimeNoChangeLights=" 2348 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2349 pw.println(" mLastInteractivePowerHintTime=" 2350 + TimeUtils.formatUptime(mLastInteractivePowerHintTime)); 2351 pw.println(" mDisplayReady=" + mDisplayReady); 2352 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2353 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2354 2355 pw.println(); 2356 pw.println("Settings and Configuration:"); 2357 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2358 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2359 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2360 + mDecoupleHalInteractiveModeFromDisplayConfig); 2361 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2362 + mWakeUpWhenPluggedOrUnpluggedConfig); 2363 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2364 + mSuspendWhenScreenOffDueToProximityConfig); 2365 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2366 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2367 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2368 + mDreamsActivatedOnSleepByDefaultConfig); 2369 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2370 + mDreamsActivatedOnDockByDefaultConfig); 2371 pw.println(" mDreamsEnabledOnBatteryConfig=" 2372 + mDreamsEnabledOnBatteryConfig); 2373 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2374 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2375 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2376 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2377 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2378 + mDreamsBatteryLevelDrainCutoffConfig); 2379 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2380 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2381 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2382 pw.println(" mDozeAfterScreenOffConfig=" + mDozeAfterScreenOffConfig); 2383 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2384 pw.println(" mAutoLowPowerModeConfigured=" + mAutoLowPowerModeConfigured); 2385 pw.println(" mAutoLowPowerModeSnoozing=" + mAutoLowPowerModeSnoozing); 2386 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2387 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2388 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2389 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2390 pw.println(" mSleepTimeoutSetting=" + mSleepTimeoutSetting); 2391 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2392 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2393 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2394 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2395 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2396 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2397 + mScreenAutoBrightnessAdjustmentSetting); 2398 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2399 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2400 + mScreenBrightnessOverrideFromWindowManager); 2401 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2402 + mUserActivityTimeoutOverrideFromWindowManager); 2403 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2404 + mTemporaryScreenBrightnessSettingOverride); 2405 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2406 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2407 pw.println(" mDozeScreenStateOverrideFromDreamManager=" 2408 + mDozeScreenStateOverrideFromDreamManager); 2409 pw.println(" mDozeScreenBrightnessOverrideFromDreamManager=" 2410 + mDozeScreenBrightnessOverrideFromDreamManager); 2411 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2412 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2413 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2414 2415 final int sleepTimeout = getSleepTimeoutLocked(); 2416 final int screenOffTimeout = getScreenOffTimeoutLocked(sleepTimeout); 2417 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2418 pw.println(); 2419 pw.println("Sleep timeout: " + sleepTimeout + " ms"); 2420 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2421 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2422 2423 pw.println(); 2424 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2425 for (WakeLock wl : mWakeLocks) { 2426 pw.println(" " + wl); 2427 } 2428 2429 pw.println(); 2430 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2431 for (SuspendBlocker sb : mSuspendBlockers) { 2432 pw.println(" " + sb); 2433 } 2434 2435 pw.println(); 2436 pw.println("Display Power: " + mDisplayPowerCallbacks); 2437 2438 wcd = mWirelessChargerDetector; 2439 } 2440 2441 if (wcd != null) { 2442 wcd.dump(pw); 2443 } 2444 } 2445 2446 private SuspendBlocker createSuspendBlockerLocked(String name) { 2447 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2448 mSuspendBlockers.add(suspendBlocker); 2449 return suspendBlocker; 2450 } 2451 2452 private static String wakefulnessToString(int wakefulness) { 2453 switch (wakefulness) { 2454 case WAKEFULNESS_ASLEEP: 2455 return "Asleep"; 2456 case WAKEFULNESS_AWAKE: 2457 return "Awake"; 2458 case WAKEFULNESS_DREAMING: 2459 return "Dreaming"; 2460 case WAKEFULNESS_DOZING: 2461 return "Dozing"; 2462 default: 2463 return Integer.toString(wakefulness); 2464 } 2465 } 2466 2467 private static WorkSource copyWorkSource(WorkSource workSource) { 2468 return workSource != null ? new WorkSource(workSource) : null; 2469 } 2470 2471 private final class BatteryReceiver extends BroadcastReceiver { 2472 @Override 2473 public void onReceive(Context context, Intent intent) { 2474 synchronized (mLock) { 2475 handleBatteryStateChangedLocked(); 2476 } 2477 } 2478 } 2479 2480 private final class DreamReceiver extends BroadcastReceiver { 2481 @Override 2482 public void onReceive(Context context, Intent intent) { 2483 synchronized (mLock) { 2484 scheduleSandmanLocked(); 2485 } 2486 } 2487 } 2488 2489 private final class UserSwitchedReceiver extends BroadcastReceiver { 2490 @Override 2491 public void onReceive(Context context, Intent intent) { 2492 synchronized (mLock) { 2493 handleSettingsChangedLocked(); 2494 } 2495 } 2496 } 2497 2498 private final class DockReceiver extends BroadcastReceiver { 2499 @Override 2500 public void onReceive(Context context, Intent intent) { 2501 synchronized (mLock) { 2502 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2503 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2504 if (mDockState != dockState) { 2505 mDockState = dockState; 2506 mDirty |= DIRTY_DOCK_STATE; 2507 updatePowerStateLocked(); 2508 } 2509 } 2510 } 2511 } 2512 2513 private final class SettingsObserver extends ContentObserver { 2514 public SettingsObserver(Handler handler) { 2515 super(handler); 2516 } 2517 2518 @Override 2519 public void onChange(boolean selfChange, Uri uri) { 2520 synchronized (mLock) { 2521 handleSettingsChangedLocked(); 2522 } 2523 } 2524 } 2525 2526 /** 2527 * Handler for asynchronous operations performed by the power manager. 2528 */ 2529 private final class PowerManagerHandler extends Handler { 2530 public PowerManagerHandler(Looper looper) { 2531 super(looper, null, true /*async*/); 2532 } 2533 2534 @Override 2535 public void handleMessage(Message msg) { 2536 switch (msg.what) { 2537 case MSG_USER_ACTIVITY_TIMEOUT: 2538 handleUserActivityTimeout(); 2539 break; 2540 case MSG_SANDMAN: 2541 handleSandman(); 2542 break; 2543 } 2544 } 2545 } 2546 2547 /** 2548 * Represents a wake lock that has been acquired by an application. 2549 */ 2550 private final class WakeLock implements IBinder.DeathRecipient { 2551 public final IBinder mLock; 2552 public int mFlags; 2553 public String mTag; 2554 public final String mPackageName; 2555 public WorkSource mWorkSource; 2556 public String mHistoryTag; 2557 public final int mOwnerUid; 2558 public final int mOwnerPid; 2559 public boolean mNotifiedAcquired; 2560 2561 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2562 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2563 mLock = lock; 2564 mFlags = flags; 2565 mTag = tag; 2566 mPackageName = packageName; 2567 mWorkSource = copyWorkSource(workSource); 2568 mHistoryTag = historyTag; 2569 mOwnerUid = ownerUid; 2570 mOwnerPid = ownerPid; 2571 } 2572 2573 @Override 2574 public void binderDied() { 2575 PowerManagerService.this.handleWakeLockDeath(this); 2576 } 2577 2578 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2579 int ownerUid, int ownerPid) { 2580 return mFlags == flags 2581 && mTag.equals(tag) 2582 && hasSameWorkSource(workSource) 2583 && mOwnerUid == ownerUid 2584 && mOwnerPid == ownerPid; 2585 } 2586 2587 public void updateProperties(int flags, String tag, String packageName, 2588 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2589 if (!mPackageName.equals(packageName)) { 2590 throw new IllegalStateException("Existing wake lock package name changed: " 2591 + mPackageName + " to " + packageName); 2592 } 2593 if (mOwnerUid != ownerUid) { 2594 throw new IllegalStateException("Existing wake lock uid changed: " 2595 + mOwnerUid + " to " + ownerUid); 2596 } 2597 if (mOwnerPid != ownerPid) { 2598 throw new IllegalStateException("Existing wake lock pid changed: " 2599 + mOwnerPid + " to " + ownerPid); 2600 } 2601 mFlags = flags; 2602 mTag = tag; 2603 updateWorkSource(workSource); 2604 mHistoryTag = historyTag; 2605 } 2606 2607 public boolean hasSameWorkSource(WorkSource workSource) { 2608 return Objects.equal(mWorkSource, workSource); 2609 } 2610 2611 public void updateWorkSource(WorkSource workSource) { 2612 mWorkSource = copyWorkSource(workSource); 2613 } 2614 2615 @Override 2616 public String toString() { 2617 return getLockLevelString() 2618 + " '" + mTag + "'" + getLockFlagsString() 2619 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2620 } 2621 2622 @SuppressWarnings("deprecation") 2623 private String getLockLevelString() { 2624 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2625 case PowerManager.FULL_WAKE_LOCK: 2626 return "FULL_WAKE_LOCK "; 2627 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2628 return "SCREEN_BRIGHT_WAKE_LOCK "; 2629 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2630 return "SCREEN_DIM_WAKE_LOCK "; 2631 case PowerManager.PARTIAL_WAKE_LOCK: 2632 return "PARTIAL_WAKE_LOCK "; 2633 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2634 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2635 case PowerManager.DOZE_WAKE_LOCK: 2636 return "DOZE_WAKE_LOCK "; 2637 default: 2638 return "??? "; 2639 } 2640 } 2641 2642 private String getLockFlagsString() { 2643 String result = ""; 2644 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2645 result += " ACQUIRE_CAUSES_WAKEUP"; 2646 } 2647 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2648 result += " ON_AFTER_RELEASE"; 2649 } 2650 return result; 2651 } 2652 } 2653 2654 private final class SuspendBlockerImpl implements SuspendBlocker { 2655 private final String mName; 2656 private final String mTraceName; 2657 private int mReferenceCount; 2658 2659 public SuspendBlockerImpl(String name) { 2660 mName = name; 2661 mTraceName = "SuspendBlocker (" + name + ")"; 2662 } 2663 2664 @Override 2665 protected void finalize() throws Throwable { 2666 try { 2667 if (mReferenceCount != 0) { 2668 Slog.wtf(TAG, "Suspend blocker \"" + mName 2669 + "\" was finalized without being released!"); 2670 mReferenceCount = 0; 2671 nativeReleaseSuspendBlocker(mName); 2672 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2673 } 2674 } finally { 2675 super.finalize(); 2676 } 2677 } 2678 2679 @Override 2680 public void acquire() { 2681 synchronized (this) { 2682 mReferenceCount += 1; 2683 if (mReferenceCount == 1) { 2684 if (DEBUG_SPEW) { 2685 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2686 } 2687 Trace.asyncTraceBegin(Trace.TRACE_TAG_POWER, mTraceName, 0); 2688 nativeAcquireSuspendBlocker(mName); 2689 } 2690 } 2691 } 2692 2693 @Override 2694 public void release() { 2695 synchronized (this) { 2696 mReferenceCount -= 1; 2697 if (mReferenceCount == 0) { 2698 if (DEBUG_SPEW) { 2699 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2700 } 2701 nativeReleaseSuspendBlocker(mName); 2702 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2703 } else if (mReferenceCount < 0) { 2704 Slog.wtf(TAG, "Suspend blocker \"" + mName 2705 + "\" was released without being acquired!", new Throwable()); 2706 mReferenceCount = 0; 2707 } 2708 } 2709 } 2710 2711 @Override 2712 public String toString() { 2713 synchronized (this) { 2714 return mName + ": ref count=" + mReferenceCount; 2715 } 2716 } 2717 } 2718 2719 private final class BinderService extends IPowerManager.Stub { 2720 @Override // Binder call 2721 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2722 String packageName, int uid) { 2723 if (uid < 0) { 2724 uid = Binder.getCallingUid(); 2725 } 2726 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2727 } 2728 2729 @Override // Binder call 2730 public void powerHint(int hintId, int data) { 2731 if (!mSystemReady) { 2732 // Service not ready yet, so who the heck cares about power hints, bah. 2733 return; 2734 } 2735 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2736 powerHintInternal(hintId, data); 2737 } 2738 2739 @Override // Binder call 2740 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2741 WorkSource ws, String historyTag) { 2742 if (lock == null) { 2743 throw new IllegalArgumentException("lock must not be null"); 2744 } 2745 if (packageName == null) { 2746 throw new IllegalArgumentException("packageName must not be null"); 2747 } 2748 PowerManager.validateWakeLockParameters(flags, tag); 2749 2750 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2751 if ((flags & PowerManager.DOZE_WAKE_LOCK) != 0) { 2752 mContext.enforceCallingOrSelfPermission( 2753 android.Manifest.permission.DEVICE_POWER, null); 2754 } 2755 if (ws != null && ws.size() != 0) { 2756 mContext.enforceCallingOrSelfPermission( 2757 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2758 } else { 2759 ws = null; 2760 } 2761 2762 final int uid = Binder.getCallingUid(); 2763 final int pid = Binder.getCallingPid(); 2764 final long ident = Binder.clearCallingIdentity(); 2765 try { 2766 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2767 } finally { 2768 Binder.restoreCallingIdentity(ident); 2769 } 2770 } 2771 2772 @Override // Binder call 2773 public void releaseWakeLock(IBinder lock, int flags) { 2774 if (lock == null) { 2775 throw new IllegalArgumentException("lock must not be null"); 2776 } 2777 2778 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2779 2780 final long ident = Binder.clearCallingIdentity(); 2781 try { 2782 releaseWakeLockInternal(lock, flags); 2783 } finally { 2784 Binder.restoreCallingIdentity(ident); 2785 } 2786 } 2787 2788 @Override // Binder call 2789 public void updateWakeLockUids(IBinder lock, int[] uids) { 2790 WorkSource ws = null; 2791 2792 if (uids != null) { 2793 ws = new WorkSource(); 2794 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2795 // one at a time? 2796 for (int i = 0; i < uids.length; i++) { 2797 ws.add(uids[i]); 2798 } 2799 } 2800 updateWakeLockWorkSource(lock, ws, null); 2801 } 2802 2803 @Override // Binder call 2804 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2805 if (lock == null) { 2806 throw new IllegalArgumentException("lock must not be null"); 2807 } 2808 2809 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2810 if (ws != null && ws.size() != 0) { 2811 mContext.enforceCallingOrSelfPermission( 2812 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2813 } else { 2814 ws = null; 2815 } 2816 2817 final int callingUid = Binder.getCallingUid(); 2818 final long ident = Binder.clearCallingIdentity(); 2819 try { 2820 updateWakeLockWorkSourceInternal(lock, ws, historyTag, callingUid); 2821 } finally { 2822 Binder.restoreCallingIdentity(ident); 2823 } 2824 } 2825 2826 @Override // Binder call 2827 public boolean isWakeLockLevelSupported(int level) { 2828 final long ident = Binder.clearCallingIdentity(); 2829 try { 2830 return isWakeLockLevelSupportedInternal(level); 2831 } finally { 2832 Binder.restoreCallingIdentity(ident); 2833 } 2834 } 2835 2836 @Override // Binder call 2837 public void userActivity(long eventTime, int event, int flags) { 2838 final long now = SystemClock.uptimeMillis(); 2839 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2840 != PackageManager.PERMISSION_GRANTED 2841 && mContext.checkCallingOrSelfPermission( 2842 android.Manifest.permission.USER_ACTIVITY) 2843 != PackageManager.PERMISSION_GRANTED) { 2844 // Once upon a time applications could call userActivity(). 2845 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2846 // request instead of throwing a SecurityException so we don't break old apps. 2847 synchronized (mLock) { 2848 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2849 mLastWarningAboutUserActivityPermission = now; 2850 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2851 + "caller does not have DEVICE_POWER or USER_ACTIVITY " 2852 + "permission. Please fix your app! " 2853 + " pid=" + Binder.getCallingPid() 2854 + " uid=" + Binder.getCallingUid()); 2855 } 2856 } 2857 return; 2858 } 2859 2860 if (eventTime > SystemClock.uptimeMillis()) { 2861 throw new IllegalArgumentException("event time must not be in the future"); 2862 } 2863 2864 final int uid = Binder.getCallingUid(); 2865 final long ident = Binder.clearCallingIdentity(); 2866 try { 2867 userActivityInternal(eventTime, event, flags, uid); 2868 } finally { 2869 Binder.restoreCallingIdentity(ident); 2870 } 2871 } 2872 2873 @Override // Binder call 2874 public void wakeUp(long eventTime) { 2875 if (eventTime > SystemClock.uptimeMillis()) { 2876 throw new IllegalArgumentException("event time must not be in the future"); 2877 } 2878 2879 mContext.enforceCallingOrSelfPermission( 2880 android.Manifest.permission.DEVICE_POWER, null); 2881 2882 final int uid = Binder.getCallingUid(); 2883 final long ident = Binder.clearCallingIdentity(); 2884 try { 2885 wakeUpInternal(eventTime, uid); 2886 } finally { 2887 Binder.restoreCallingIdentity(ident); 2888 } 2889 } 2890 2891 @Override // Binder call 2892 public void goToSleep(long eventTime, int reason, int flags) { 2893 if (eventTime > SystemClock.uptimeMillis()) { 2894 throw new IllegalArgumentException("event time must not be in the future"); 2895 } 2896 2897 mContext.enforceCallingOrSelfPermission( 2898 android.Manifest.permission.DEVICE_POWER, null); 2899 2900 final int uid = Binder.getCallingUid(); 2901 final long ident = Binder.clearCallingIdentity(); 2902 try { 2903 goToSleepInternal(eventTime, reason, flags, uid); 2904 } finally { 2905 Binder.restoreCallingIdentity(ident); 2906 } 2907 } 2908 2909 @Override // Binder call 2910 public void nap(long eventTime) { 2911 if (eventTime > SystemClock.uptimeMillis()) { 2912 throw new IllegalArgumentException("event time must not be in the future"); 2913 } 2914 2915 mContext.enforceCallingOrSelfPermission( 2916 android.Manifest.permission.DEVICE_POWER, null); 2917 2918 final int uid = Binder.getCallingUid(); 2919 final long ident = Binder.clearCallingIdentity(); 2920 try { 2921 napInternal(eventTime, uid); 2922 } finally { 2923 Binder.restoreCallingIdentity(ident); 2924 } 2925 } 2926 2927 @Override // Binder call 2928 public boolean isInteractive() { 2929 final long ident = Binder.clearCallingIdentity(); 2930 try { 2931 return isInteractiveInternal(); 2932 } finally { 2933 Binder.restoreCallingIdentity(ident); 2934 } 2935 } 2936 2937 @Override // Binder call 2938 public boolean isPowerSaveMode() { 2939 final long ident = Binder.clearCallingIdentity(); 2940 try { 2941 return isLowPowerModeInternal(); 2942 } finally { 2943 Binder.restoreCallingIdentity(ident); 2944 } 2945 } 2946 2947 @Override // Binder call 2948 public boolean setPowerSaveMode(boolean mode) { 2949 mContext.enforceCallingOrSelfPermission( 2950 android.Manifest.permission.DEVICE_POWER, null); 2951 final long ident = Binder.clearCallingIdentity(); 2952 try { 2953 return setLowPowerModeInternal(mode); 2954 } finally { 2955 Binder.restoreCallingIdentity(ident); 2956 } 2957 } 2958 2959 /** 2960 * Reboots the device. 2961 * 2962 * @param confirm If true, shows a reboot confirmation dialog. 2963 * @param reason The reason for the reboot, or null if none. 2964 * @param wait If true, this call waits for the reboot to complete and does not return. 2965 */ 2966 @Override // Binder call 2967 public void reboot(boolean confirm, String reason, boolean wait) { 2968 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2969 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2970 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2971 } 2972 2973 final long ident = Binder.clearCallingIdentity(); 2974 try { 2975 shutdownOrRebootInternal(false, confirm, reason, wait); 2976 } finally { 2977 Binder.restoreCallingIdentity(ident); 2978 } 2979 } 2980 2981 /** 2982 * Shuts down the device. 2983 * 2984 * @param confirm If true, shows a shutdown confirmation dialog. 2985 * @param wait If true, this call waits for the shutdown to complete and does not return. 2986 */ 2987 @Override // Binder call 2988 public void shutdown(boolean confirm, boolean wait) { 2989 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2990 2991 final long ident = Binder.clearCallingIdentity(); 2992 try { 2993 shutdownOrRebootInternal(true, confirm, null, wait); 2994 } finally { 2995 Binder.restoreCallingIdentity(ident); 2996 } 2997 } 2998 2999 /** 3000 * Crash the runtime (causing a complete restart of the Android framework). 3001 * Requires REBOOT permission. Mostly for testing. Should not return. 3002 */ 3003 @Override // Binder call 3004 public void crash(String message) { 3005 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 3006 3007 final long ident = Binder.clearCallingIdentity(); 3008 try { 3009 crashInternal(message); 3010 } finally { 3011 Binder.restoreCallingIdentity(ident); 3012 } 3013 } 3014 3015 /** 3016 * Set the setting that determines whether the device stays on when plugged in. 3017 * The argument is a bit string, with each bit specifying a power source that, 3018 * when the device is connected to that source, causes the device to stay on. 3019 * See {@link android.os.BatteryManager} for the list of power sources that 3020 * can be specified. Current values include 3021 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 3022 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 3023 * 3024 * Used by "adb shell svc power stayon ..." 3025 * 3026 * @param val an {@code int} containing the bits that specify which power sources 3027 * should cause the device to stay on. 3028 */ 3029 @Override // Binder call 3030 public void setStayOnSetting(int val) { 3031 mContext.enforceCallingOrSelfPermission( 3032 android.Manifest.permission.WRITE_SETTINGS, null); 3033 3034 final long ident = Binder.clearCallingIdentity(); 3035 try { 3036 setStayOnSettingInternal(val); 3037 } finally { 3038 Binder.restoreCallingIdentity(ident); 3039 } 3040 } 3041 3042 /** 3043 * Used by device administration to set the maximum screen off timeout. 3044 * 3045 * This method must only be called by the device administration policy manager. 3046 */ 3047 @Override // Binder call 3048 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 3049 final long ident = Binder.clearCallingIdentity(); 3050 try { 3051 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 3052 } finally { 3053 Binder.restoreCallingIdentity(ident); 3054 } 3055 } 3056 3057 /** 3058 * Used by the settings application and brightness control widgets to 3059 * temporarily override the current screen brightness setting so that the 3060 * user can observe the effect of an intended settings change without applying 3061 * it immediately. 3062 * 3063 * The override will be canceled when the setting value is next updated. 3064 * 3065 * @param brightness The overridden brightness. 3066 * 3067 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 3068 */ 3069 @Override // Binder call 3070 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 3071 mContext.enforceCallingOrSelfPermission( 3072 android.Manifest.permission.DEVICE_POWER, null); 3073 3074 final long ident = Binder.clearCallingIdentity(); 3075 try { 3076 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 3077 } finally { 3078 Binder.restoreCallingIdentity(ident); 3079 } 3080 } 3081 3082 /** 3083 * Used by the settings application and brightness control widgets to 3084 * temporarily override the current screen auto-brightness adjustment setting so that the 3085 * user can observe the effect of an intended settings change without applying 3086 * it immediately. 3087 * 3088 * The override will be canceled when the setting value is next updated. 3089 * 3090 * @param adj The overridden brightness, or Float.NaN to disable the override. 3091 * 3092 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 3093 */ 3094 @Override // Binder call 3095 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 3096 mContext.enforceCallingOrSelfPermission( 3097 android.Manifest.permission.DEVICE_POWER, null); 3098 3099 final long ident = Binder.clearCallingIdentity(); 3100 try { 3101 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 3102 } finally { 3103 Binder.restoreCallingIdentity(ident); 3104 } 3105 } 3106 3107 /** 3108 * Used by the phone application to make the attention LED flash when ringing. 3109 */ 3110 @Override // Binder call 3111 public void setAttentionLight(boolean on, int color) { 3112 mContext.enforceCallingOrSelfPermission( 3113 android.Manifest.permission.DEVICE_POWER, null); 3114 3115 final long ident = Binder.clearCallingIdentity(); 3116 try { 3117 setAttentionLightInternal(on, color); 3118 } finally { 3119 Binder.restoreCallingIdentity(ident); 3120 } 3121 } 3122 3123 @Override // Binder call 3124 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3125 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3126 != PackageManager.PERMISSION_GRANTED) { 3127 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3128 + Binder.getCallingPid() 3129 + ", uid=" + Binder.getCallingUid()); 3130 return; 3131 } 3132 3133 final long ident = Binder.clearCallingIdentity(); 3134 try { 3135 dumpInternal(pw); 3136 } finally { 3137 Binder.restoreCallingIdentity(ident); 3138 } 3139 } 3140 } 3141 3142 private final class LocalService extends PowerManagerInternal { 3143 @Override 3144 public void setScreenBrightnessOverrideFromWindowManager(int screenBrightness) { 3145 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3146 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3147 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3148 } 3149 setScreenBrightnessOverrideFromWindowManagerInternal(screenBrightness); 3150 } 3151 3152 @Override 3153 public void setButtonBrightnessOverrideFromWindowManager(int screenBrightness) { 3154 // Do nothing. 3155 // Button lights are not currently supported in the new implementation. 3156 } 3157 3158 @Override 3159 public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) { 3160 switch (screenState) { 3161 case Display.STATE_UNKNOWN: 3162 case Display.STATE_OFF: 3163 case Display.STATE_DOZE: 3164 case Display.STATE_DOZE_SUSPEND: 3165 case Display.STATE_ON: 3166 break; 3167 default: 3168 screenState = Display.STATE_UNKNOWN; 3169 break; 3170 } 3171 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3172 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3173 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3174 } 3175 setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness); 3176 } 3177 3178 @Override 3179 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3180 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3181 } 3182 3183 @Override 3184 public boolean getLowPowerModeEnabled() { 3185 synchronized (mLock) { 3186 return mLowPowerModeEnabled; 3187 } 3188 } 3189 3190 @Override 3191 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3192 synchronized (mLock) { 3193 mLowPowerModeListeners.add(listener); 3194 } 3195 } 3196 } 3197 } 3198