PowerManagerService.java revision eb94fa7975b1e8742f3b00cec6bd4f9d6b329e3a
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 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.internal.os.BackgroundThread; 22import com.android.server.BatteryService; 23import com.android.server.EventLogTags; 24import com.android.server.LocalServices; 25import com.android.server.ServiceThread; 26import com.android.server.lights.Light; 27import com.android.server.lights.LightsManager; 28import com.android.server.Watchdog; 29 30import android.Manifest; 31import android.content.BroadcastReceiver; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.database.ContentObserver; 39import android.hardware.SensorManager; 40import android.hardware.SystemSensorManager; 41import android.hardware.display.DisplayManagerInternal; 42import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 43import android.net.Uri; 44import android.os.BatteryManager; 45import android.os.Binder; 46import android.os.Handler; 47import android.os.IBinder; 48import android.os.IPowerManager; 49import android.os.Looper; 50import android.os.Message; 51import android.os.PowerManager; 52import android.os.PowerManagerInternal; 53import android.os.Process; 54import android.os.RemoteException; 55import android.os.SystemClock; 56import android.os.SystemProperties; 57import android.os.SystemService; 58import android.os.UserHandle; 59import android.os.WorkSource; 60import android.provider.Settings; 61import android.service.dreams.DreamManagerInternal; 62import android.util.EventLog; 63import android.util.Log; 64import android.util.Slog; 65import android.util.TimeUtils; 66import android.view.Display; 67import android.view.WindowManagerPolicy; 68 69import java.io.FileDescriptor; 70import java.io.PrintWriter; 71import java.util.ArrayList; 72 73import libcore.util.Objects; 74 75/** 76 * The power manager service is responsible for coordinating power management 77 * functions on the device. 78 */ 79public final class PowerManagerService extends com.android.server.SystemService 80 implements Watchdog.Monitor { 81 private static final String TAG = "PowerManagerService"; 82 83 private static final boolean DEBUG = false; 84 private static final boolean DEBUG_SPEW = DEBUG && true; 85 86 // Message: Sent when a user activity timeout occurs to update the power state. 87 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 88 // Message: Sent when the device enters or exits a dreaming or dozing state. 89 private static final int MSG_SANDMAN = 2; 90 // Message: Sent when the screen on blocker is released. 91 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 92 // Message: Sent to poll whether the boot animation has terminated. 93 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 94 95 // Dirty bit: mWakeLocks changed 96 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 97 // Dirty bit: mWakefulness changed 98 private static final int DIRTY_WAKEFULNESS = 1 << 1; 99 // Dirty bit: user activity was poked or may have timed out 100 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 101 // Dirty bit: actual display power state was updated asynchronously 102 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 103 // Dirty bit: mBootCompleted changed 104 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 105 // Dirty bit: settings changed 106 private static final int DIRTY_SETTINGS = 1 << 5; 107 // Dirty bit: mIsPowered changed 108 private static final int DIRTY_IS_POWERED = 1 << 6; 109 // Dirty bit: mStayOn changed 110 private static final int DIRTY_STAY_ON = 1 << 7; 111 // Dirty bit: battery state changed 112 private static final int DIRTY_BATTERY_STATE = 1 << 8; 113 // Dirty bit: proximity state changed 114 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 115 // Dirty bit: screen on blocker state became held or unheld 116 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 117 // Dirty bit: dock state changed 118 private static final int DIRTY_DOCK_STATE = 1 << 11; 119 120 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 121 // The screen should be off or in the process of being turned off by the display controller. 122 // The device typically passes through the dozing state first. 123 private static final int WAKEFULNESS_ASLEEP = 0; 124 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 125 // When the user activity timeout expires, the device may start dreaming or go to sleep. 126 private static final int WAKEFULNESS_AWAKE = 1; 127 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 128 // which ends the dream. The device goes to sleep when goToSleep() is called, when 129 // the dream ends or when unplugged. 130 // User activity may brighten the screen but does not end the dream. 131 private static final int WAKEFULNESS_DREAMING = 2; 132 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 133 // low-power "doze" dream to run which keeps the display on but lets the application 134 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 135 // The device fully goes to sleep if the dream cannot be started or ends on its own. 136 private static final int WAKEFULNESS_DOZING = 3; 137 138 // Summarizes the state of all active wakelocks. 139 private static final int WAKE_LOCK_CPU = 1 << 0; 140 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 141 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 142 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 143 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 144 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 145 private static final int WAKE_LOCK_DOZE = 1 << 6; 146 147 // Summarizes the user activity state. 148 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 149 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 150 151 // Default timeout in milliseconds. This is only used until the settings 152 // provider populates the actual default value (R.integer.def_screen_off_timeout). 153 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 154 155 // The name of the boot animation service in init.rc. 156 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 157 158 // Poll interval in milliseconds for watching boot animation finished. 159 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 160 161 // Used to send the hint to the PowerHAL indicating transitions 162 // from and to the low power mode. 163 private static final int POWER_HINT_LOW_POWER_MODE = 5; 164 165 private final Context mContext; 166 private LightsManager mLightsManager; 167 private BatteryService mBatteryService; 168 private DisplayManagerInternal mDisplayManagerInternal; 169 private IBatteryStats mBatteryStats; 170 private IAppOpsService mAppOps; 171 private ServiceThread mHandlerThread; 172 private PowerManagerHandler mHandler; 173 private WindowManagerPolicy mPolicy; 174 private Notifier mNotifier; 175 private WirelessChargerDetector mWirelessChargerDetector; 176 private SettingsObserver mSettingsObserver; 177 private DreamManagerInternal mDreamManager; 178 private Light mAttentionLight; 179 180 private final Object mLock = new Object(); 181 182 // A bitfield that indicates what parts of the power state have 183 // changed and need to be recalculated. 184 private int mDirty; 185 186 // Indicates whether the device is awake or asleep or somewhere in between. 187 // This is distinct from the screen power state, which is managed separately. 188 private int mWakefulness; 189 190 // True if the sandman has just been summoned for the first time since entering the 191 // dreaming or dozing state. Indicates whether a new dream should begin. 192 private boolean mSandmanSummoned; 193 194 // True if MSG_SANDMAN has been scheduled. 195 private boolean mSandmanScheduled; 196 197 // Table of all suspend blockers. 198 // There should only be a few of these. 199 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 200 201 // Table of all wake locks acquired by applications. 202 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 203 204 // A bitfield that summarizes the state of all active wakelocks. 205 private int mWakeLockSummary; 206 207 // True if the device is in an interactive state. 208 private boolean mInteractive; 209 private boolean mInteractiveChanging; 210 211 // If true, instructs the display controller to wait for the proximity sensor to 212 // go negative before turning the screen on. 213 private boolean mRequestWaitForNegativeProximity; 214 215 // Timestamp of the last time the device was awoken or put to sleep. 216 private long mLastWakeTime; 217 private long mLastSleepTime; 218 219 // Timestamp of the last call to user activity. 220 private long mLastUserActivityTime; 221 private long mLastUserActivityTimeNoChangeLights; 222 223 // A bitfield that summarizes the effect of the user activity timer. 224 // A zero value indicates that the user activity timer has expired. 225 private int mUserActivitySummary; 226 227 // The desired display power state. The actual state may lag behind the 228 // requested because it is updated asynchronously by the display power controller. 229 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 230 231 // True if the display power state has been fully applied, which means the display 232 // is actually on or actually off or whatever was requested. 233 private boolean mDisplayReady; 234 235 // The suspend blocker used to keep the CPU alive when an application has acquired 236 // a wake lock. 237 private final SuspendBlocker mWakeLockSuspendBlocker; 238 239 // True if the wake lock suspend blocker has been acquired. 240 private boolean mHoldingWakeLockSuspendBlocker; 241 242 // The suspend blocker used to keep the CPU alive when the display is on, the 243 // display is getting ready or there is user activity (in which case the display 244 // must be on). 245 private final SuspendBlocker mDisplaySuspendBlocker; 246 247 // True if the display suspend blocker has been acquired. 248 private boolean mHoldingDisplaySuspendBlocker; 249 250 // The screen on blocker used to keep the screen from turning on while the lock 251 // screen is coming up. 252 private final ScreenOnBlockerImpl mScreenOnBlocker; 253 254 // True if systemReady() has been called. 255 private boolean mSystemReady; 256 257 // True if boot completed occurred. We keep the screen on until this happens. 258 private boolean mBootCompleted; 259 260 // True if auto-suspend mode is enabled. 261 // Refer to autosuspend.h. 262 private boolean mHalAutoSuspendModeEnabled; 263 264 // True if interactive mode is enabled. 265 // Refer to power.h. 266 private boolean mHalInteractiveModeEnabled; 267 268 // True if the device is plugged into a power source. 269 private boolean mIsPowered; 270 271 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 272 private int mPlugType; 273 274 // The current battery level percentage. 275 private int mBatteryLevel; 276 277 // The battery level percentage at the time the dream started. 278 // This is used to terminate a dream and go to sleep if the battery is 279 // draining faster than it is charging and the user activity timeout has expired. 280 private int mBatteryLevelWhenDreamStarted; 281 282 // The current dock state. 283 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 284 285 // True to decouple auto-suspend mode from the display state. 286 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 287 288 // True to decouple interactive mode from the display state. 289 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 290 291 // True if the device should wake up when plugged or unplugged. 292 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 293 294 // True if the device should suspend when the screen is off due to proximity. 295 private boolean mSuspendWhenScreenOffDueToProximityConfig; 296 297 // True if dreams are supported on this device. 298 private boolean mDreamsSupportedConfig; 299 300 // Default value for dreams enabled 301 private boolean mDreamsEnabledByDefaultConfig; 302 303 // Default value for dreams activate-on-sleep 304 private boolean mDreamsActivatedOnSleepByDefaultConfig; 305 306 // Default value for dreams activate-on-dock 307 private boolean mDreamsActivatedOnDockByDefaultConfig; 308 309 // True if dreams can run while not plugged in. 310 private boolean mDreamsEnabledOnBatteryConfig; 311 312 // Minimum battery level to allow dreaming when powered. 313 // Use -1 to disable this safety feature. 314 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 315 316 // Minimum battery level to allow dreaming when not powered. 317 // Use -1 to disable this safety feature. 318 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 319 320 // If the battery level drops by this percentage and the user activity timeout 321 // has expired, then assume the device is receiving insufficient current to charge 322 // effectively and terminate the dream. Use -1 to disable this safety feature. 323 private int mDreamsBatteryLevelDrainCutoffConfig; 324 325 // True if dreams are enabled by the user. 326 private boolean mDreamsEnabledSetting; 327 328 // True if dreams should be activated on sleep. 329 private boolean mDreamsActivateOnSleepSetting; 330 331 // True if dreams should be activated on dock. 332 private boolean mDreamsActivateOnDockSetting; 333 334 // The minimum screen off timeout, in milliseconds. 335 private int mMinimumScreenOffTimeoutConfig; 336 337 // The screen dim duration, in milliseconds. 338 // This is subtracted from the end of the screen off timeout so the 339 // minimum screen off timeout should be longer than this. 340 private int mMaximumScreenDimDurationConfig; 341 342 // The maximum screen dim time expressed as a ratio relative to the screen 343 // off timeout. If the screen off timeout is very short then we want the 344 // dim timeout to also be quite short so that most of the time is spent on. 345 // Otherwise the user won't get much screen on time before dimming occurs. 346 private float mMaximumScreenDimRatioConfig; 347 348 // The screen off timeout setting value in milliseconds. 349 private int mScreenOffTimeoutSetting; 350 351 // The maximum allowable screen off timeout according to the device 352 // administration policy. Overrides other settings. 353 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 354 355 // The stay on while plugged in setting. 356 // A bitfield of battery conditions under which to make the screen stay on. 357 private int mStayOnWhilePluggedInSetting; 358 359 // True if the device should stay on. 360 private boolean mStayOn; 361 362 // True if the proximity sensor reads a positive result. 363 private boolean mProximityPositive; 364 365 // Screen brightness setting limits. 366 private int mScreenBrightnessSettingMinimum; 367 private int mScreenBrightnessSettingMaximum; 368 private int mScreenBrightnessSettingDefault; 369 370 // The screen brightness setting, from 0 to 255. 371 // Use -1 if no value has been set. 372 private int mScreenBrightnessSetting; 373 374 // The screen auto-brightness adjustment setting, from -1 to 1. 375 // Use 0 if there is no adjustment. 376 private float mScreenAutoBrightnessAdjustmentSetting; 377 378 // The screen brightness mode. 379 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 380 private int mScreenBrightnessModeSetting; 381 382 // The screen brightness setting override from the window manager 383 // to allow the current foreground activity to override the brightness. 384 // Use -1 to disable. 385 private int mScreenBrightnessOverrideFromWindowManager = -1; 386 387 // The user activity timeout override from the window manager 388 // to allow the current foreground activity to override the user activity timeout. 389 // Use -1 to disable. 390 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 391 392 // The screen brightness setting override from the settings application 393 // to temporarily adjust the brightness until next updated, 394 // Use -1 to disable. 395 private int mTemporaryScreenBrightnessSettingOverride = -1; 396 397 // The screen brightness adjustment setting override from the settings 398 // application to temporarily adjust the auto-brightness adjustment factor 399 // until next updated, in the range -1..1. 400 // Use NaN to disable. 401 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 402 403 // Time when we last logged a warning about calling userActivity() without permission. 404 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 405 406 // If true, the device is in low power mode. 407 private boolean mLowPowerModeEnabled; 408 409 // Current state of the low power mode setting. 410 private boolean mLowPowerModeSetting; 411 412 // True if the battery level is currently considered low. 413 private boolean mBatteryLevelLow; 414 415 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 416 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 417 418 private native void nativeInit(); 419 420 private static native void nativeAcquireSuspendBlocker(String name); 421 private static native void nativeReleaseSuspendBlocker(String name); 422 private static native void nativeSetInteractive(boolean enable); 423 private static native void nativeSetAutoSuspend(boolean enable); 424 private static native void nativeSendPowerHint(int hintId, int data); 425 426 public PowerManagerService(Context context) { 427 super(context); 428 mContext = context; 429 synchronized (mLock) { 430 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 431 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 432 mDisplaySuspendBlocker.acquire(); 433 mHoldingDisplaySuspendBlocker = true; 434 mHalAutoSuspendModeEnabled = false; 435 mHalInteractiveModeEnabled = true; 436 437 mScreenOnBlocker = new ScreenOnBlockerImpl(); 438 mWakefulness = WAKEFULNESS_AWAKE; 439 mInteractive = true; 440 441 nativeInit(); 442 nativeSetAutoSuspend(false); 443 nativeSetInteractive(true); 444 } 445 } 446 447 @Override 448 public void onStart() { 449 publishBinderService(Context.POWER_SERVICE, new BinderService()); 450 publishLocalService(PowerManagerInternal.class, new LocalService()); 451 } 452 453 /** 454 * Initialize the power manager. 455 * Must be called before any other functions within the power manager are called. 456 */ 457 public void init(LightsManager ls, 458 BatteryService bs, IBatteryStats bss, 459 IAppOpsService appOps) { 460 mLightsManager = ls; 461 mBatteryService = bs; 462 mBatteryStats = bss; 463 mAppOps = appOps; 464 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 465 mHandlerThread = new ServiceThread(TAG, 466 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 467 mHandlerThread.start(); 468 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 469 470 Watchdog.getInstance().addMonitor(this); 471 Watchdog.getInstance().addThread(mHandler); 472 } 473 474 void setPolicy(WindowManagerPolicy policy) { 475 synchronized (mLock) { 476 mPolicy = policy; 477 } 478 } 479 480 public void systemReady() { 481 synchronized (mLock) { 482 mSystemReady = true; 483 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 484 485 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 486 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 487 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 488 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 489 490 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 491 492 // The notifier runs on the system server's main looper so as not to interfere 493 // with the animations and other critical functions of the power manager. 494 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 495 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 496 mScreenOnBlocker, mPolicy); 497 498 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 499 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 500 mHandler); 501 mSettingsObserver = new SettingsObserver(mHandler); 502 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 503 504 // Initialize display power management. 505 mDisplayManagerInternal.initPowerManagement( 506 mDisplayPowerCallbacks, mHandler, sensorManager); 507 508 // Register for broadcasts from other components of the system. 509 IntentFilter filter = new IntentFilter(); 510 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 511 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 512 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 513 514 filter = new IntentFilter(); 515 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 516 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 517 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 518 519 filter = new IntentFilter(); 520 filter.addAction(Intent.ACTION_DREAMING_STARTED); 521 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 522 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 523 524 filter = new IntentFilter(); 525 filter.addAction(Intent.ACTION_USER_SWITCHED); 526 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 527 528 filter = new IntentFilter(); 529 filter.addAction(Intent.ACTION_DOCK_EVENT); 530 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 531 532 // Register for settings changes. 533 final ContentResolver resolver = mContext.getContentResolver(); 534 resolver.registerContentObserver(Settings.Secure.getUriFor( 535 Settings.Secure.SCREENSAVER_ENABLED), 536 false, mSettingsObserver, UserHandle.USER_ALL); 537 resolver.registerContentObserver(Settings.Secure.getUriFor( 538 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 539 false, mSettingsObserver, UserHandle.USER_ALL); 540 resolver.registerContentObserver(Settings.Secure.getUriFor( 541 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 542 false, mSettingsObserver, UserHandle.USER_ALL); 543 resolver.registerContentObserver(Settings.System.getUriFor( 544 Settings.System.SCREEN_OFF_TIMEOUT), 545 false, mSettingsObserver, UserHandle.USER_ALL); 546 resolver.registerContentObserver(Settings.Global.getUriFor( 547 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 548 false, mSettingsObserver, UserHandle.USER_ALL); 549 resolver.registerContentObserver(Settings.System.getUriFor( 550 Settings.System.SCREEN_BRIGHTNESS), 551 false, mSettingsObserver, UserHandle.USER_ALL); 552 resolver.registerContentObserver(Settings.System.getUriFor( 553 Settings.System.SCREEN_BRIGHTNESS_MODE), 554 false, mSettingsObserver, UserHandle.USER_ALL); 555 resolver.registerContentObserver(Settings.System.getUriFor( 556 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 557 false, mSettingsObserver, UserHandle.USER_ALL); 558 resolver.registerContentObserver(Settings.Global.getUriFor( 559 Settings.Global.LOW_POWER_MODE), 560 false, mSettingsObserver, UserHandle.USER_ALL); 561 // Go. 562 readConfigurationLocked(); 563 updateSettingsLocked(); 564 mDirty |= DIRTY_BATTERY_STATE; 565 updatePowerStateLocked(); 566 } 567 } 568 569 private void readConfigurationLocked() { 570 final Resources resources = mContext.getResources(); 571 572 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 573 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 574 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 575 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 576 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 577 com.android.internal.R.bool.config_unplugTurnsOnScreen); 578 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 579 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 580 mDreamsSupportedConfig = resources.getBoolean( 581 com.android.internal.R.bool.config_dreamsSupported); 582 mDreamsEnabledByDefaultConfig = resources.getBoolean( 583 com.android.internal.R.bool.config_dreamsEnabledByDefault); 584 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 585 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 586 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 587 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 588 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 589 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 590 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 591 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 592 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 593 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 594 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 595 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 596 mMinimumScreenOffTimeoutConfig = resources.getInteger( 597 com.android.internal.R.integer.config_minimumScreenOffTimeout); 598 mMaximumScreenDimDurationConfig = resources.getInteger( 599 com.android.internal.R.integer.config_maximumScreenDimDuration); 600 mMaximumScreenDimRatioConfig = resources.getFraction( 601 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 602 } 603 604 private void updateSettingsLocked() { 605 final ContentResolver resolver = mContext.getContentResolver(); 606 607 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 608 Settings.Secure.SCREENSAVER_ENABLED, 609 mDreamsEnabledByDefaultConfig ? 1 : 0, 610 UserHandle.USER_CURRENT) != 0); 611 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 612 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 613 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 614 UserHandle.USER_CURRENT) != 0); 615 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 616 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 617 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 618 UserHandle.USER_CURRENT) != 0); 619 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 620 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 621 UserHandle.USER_CURRENT); 622 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 623 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 624 625 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 626 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 627 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 628 UserHandle.USER_CURRENT); 629 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 630 mTemporaryScreenBrightnessSettingOverride = -1; 631 } 632 633 final float oldScreenAutoBrightnessAdjustmentSetting = 634 mScreenAutoBrightnessAdjustmentSetting; 635 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 636 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 637 UserHandle.USER_CURRENT); 638 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 639 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 640 } 641 642 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 643 Settings.System.SCREEN_BRIGHTNESS_MODE, 644 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 645 646 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 647 Settings.Global.LOW_POWER_MODE, 0) != 0; 648 if (lowPowerModeEnabled != mLowPowerModeSetting) { 649 mLowPowerModeSetting = lowPowerModeEnabled; 650 updateLowPowerModeLocked(); 651 } 652 653 mDirty |= DIRTY_SETTINGS; 654 } 655 656 void updateLowPowerModeLocked() { 657 final boolean lowPowerModeEnabled = mLowPowerModeSetting || mBatteryLevelLow; 658 if (mLowPowerModeEnabled != lowPowerModeEnabled) { 659 mLowPowerModeEnabled = lowPowerModeEnabled; 660 powerHintInternal(POWER_HINT_LOW_POWER_MODE, lowPowerModeEnabled ? 1 : 0); 661 mLowPowerModeEnabled = lowPowerModeEnabled; 662 BackgroundThread.getHandler().post(new Runnable() { 663 @Override 664 public void run() { 665 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 666 synchronized (mLock) { 667 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 668 mLowPowerModeListeners); 669 } 670 for (int i=0; i<listeners.size(); i++) { 671 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 672 } 673 Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 674 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 675 mContext.sendBroadcast(intent); 676 } 677 }); 678 } 679 } 680 681 private void handleSettingsChangedLocked() { 682 updateSettingsLocked(); 683 updatePowerStateLocked(); 684 } 685 686 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 687 WorkSource ws, String historyTag, int uid, int pid) { 688 synchronized (mLock) { 689 if (DEBUG_SPEW) { 690 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 691 + ", flags=0x" + Integer.toHexString(flags) 692 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 693 } 694 695 WakeLock wakeLock; 696 int index = findWakeLockIndexLocked(lock); 697 if (index >= 0) { 698 wakeLock = mWakeLocks.get(index); 699 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 700 // Update existing wake lock. This shouldn't happen but is harmless. 701 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 702 uid, pid, ws, historyTag); 703 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 704 } 705 } else { 706 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 707 try { 708 lock.linkToDeath(wakeLock, 0); 709 } catch (RemoteException ex) { 710 throw new IllegalArgumentException("Wake lock is already dead."); 711 } 712 notifyWakeLockAcquiredLocked(wakeLock); 713 mWakeLocks.add(wakeLock); 714 } 715 716 applyWakeLockFlagsOnAcquireLocked(wakeLock); 717 mDirty |= DIRTY_WAKE_LOCKS; 718 updatePowerStateLocked(); 719 } 720 } 721 722 @SuppressWarnings("deprecation") 723 private static boolean isScreenLock(final WakeLock wakeLock) { 724 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 725 case PowerManager.FULL_WAKE_LOCK: 726 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 727 case PowerManager.SCREEN_DIM_WAKE_LOCK: 728 return true; 729 } 730 return false; 731 } 732 733 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 734 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 735 && isScreenLock(wakeLock)) { 736 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 737 } 738 } 739 740 private void releaseWakeLockInternal(IBinder lock, int flags) { 741 synchronized (mLock) { 742 int index = findWakeLockIndexLocked(lock); 743 if (index < 0) { 744 if (DEBUG_SPEW) { 745 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 746 + " [not found], flags=0x" + Integer.toHexString(flags)); 747 } 748 return; 749 } 750 751 WakeLock wakeLock = mWakeLocks.get(index); 752 if (DEBUG_SPEW) { 753 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 754 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 755 } 756 757 mWakeLocks.remove(index); 758 notifyWakeLockReleasedLocked(wakeLock); 759 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 760 761 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 762 mRequestWaitForNegativeProximity = true; 763 } 764 765 applyWakeLockFlagsOnReleaseLocked(wakeLock); 766 mDirty |= DIRTY_WAKE_LOCKS; 767 updatePowerStateLocked(); 768 } 769 } 770 771 private void handleWakeLockDeath(WakeLock wakeLock) { 772 synchronized (mLock) { 773 if (DEBUG_SPEW) { 774 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 775 + " [" + wakeLock.mTag + "]"); 776 } 777 778 int index = mWakeLocks.indexOf(wakeLock); 779 if (index < 0) { 780 return; 781 } 782 783 mWakeLocks.remove(index); 784 notifyWakeLockReleasedLocked(wakeLock); 785 786 applyWakeLockFlagsOnReleaseLocked(wakeLock); 787 mDirty |= DIRTY_WAKE_LOCKS; 788 updatePowerStateLocked(); 789 } 790 } 791 792 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 793 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 794 && isScreenLock(wakeLock)) { 795 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 796 PowerManager.USER_ACTIVITY_EVENT_OTHER, 797 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 798 wakeLock.mOwnerUid); 799 } 800 } 801 802 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 803 synchronized (mLock) { 804 int index = findWakeLockIndexLocked(lock); 805 if (index < 0) { 806 if (DEBUG_SPEW) { 807 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 808 + " [not found], ws=" + ws); 809 } 810 throw new IllegalArgumentException("Wake lock not active"); 811 } 812 813 WakeLock wakeLock = mWakeLocks.get(index); 814 if (DEBUG_SPEW) { 815 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 816 + " [" + wakeLock.mTag + "], ws=" + ws); 817 } 818 819 if (!wakeLock.hasSameWorkSource(ws)) { 820 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 821 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 822 ws, historyTag); 823 wakeLock.mHistoryTag = historyTag; 824 wakeLock.updateWorkSource(ws); 825 } 826 } 827 } 828 829 private int findWakeLockIndexLocked(IBinder lock) { 830 final int count = mWakeLocks.size(); 831 for (int i = 0; i < count; i++) { 832 if (mWakeLocks.get(i).mLock == lock) { 833 return i; 834 } 835 } 836 return -1; 837 } 838 839 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 840 if (mSystemReady) { 841 wakeLock.mNotifiedAcquired = true; 842 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 843 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 844 wakeLock.mHistoryTag); 845 } 846 } 847 848 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 849 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 850 if (mSystemReady && wakeLock.mNotifiedAcquired) { 851 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 852 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 853 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 854 } 855 } 856 857 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 858 if (mSystemReady && wakeLock.mNotifiedAcquired) { 859 wakeLock.mNotifiedAcquired = false; 860 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 861 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 862 wakeLock.mWorkSource, wakeLock.mHistoryTag); 863 } 864 } 865 866 @SuppressWarnings("deprecation") 867 private boolean isWakeLockLevelSupportedInternal(int level) { 868 synchronized (mLock) { 869 switch (level) { 870 case PowerManager.PARTIAL_WAKE_LOCK: 871 case PowerManager.SCREEN_DIM_WAKE_LOCK: 872 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 873 case PowerManager.FULL_WAKE_LOCK: 874 case PowerManager.DOZE_WAKE_LOCK: 875 return true; 876 877 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 878 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 879 880 default: 881 return false; 882 } 883 } 884 } 885 886 // Called from native code. 887 private void userActivityFromNative(long eventTime, int event, int flags) { 888 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 889 } 890 891 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 892 synchronized (mLock) { 893 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 894 updatePowerStateLocked(); 895 } 896 } 897 } 898 899 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 900 if (DEBUG_SPEW) { 901 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 902 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 903 + ", uid=" + uid); 904 } 905 906 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 907 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 908 || !mBootCompleted || !mSystemReady) { 909 return false; 910 } 911 912 mNotifier.onUserActivity(event, uid); 913 914 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 915 if (eventTime > mLastUserActivityTimeNoChangeLights 916 && eventTime > mLastUserActivityTime) { 917 mLastUserActivityTimeNoChangeLights = eventTime; 918 mDirty |= DIRTY_USER_ACTIVITY; 919 return true; 920 } 921 } else { 922 if (eventTime > mLastUserActivityTime) { 923 mLastUserActivityTime = eventTime; 924 mDirty |= DIRTY_USER_ACTIVITY; 925 return true; 926 } 927 } 928 return false; 929 } 930 931 private void wakeUpInternal(long eventTime) { 932 synchronized (mLock) { 933 if (wakeUpNoUpdateLocked(eventTime)) { 934 updatePowerStateLocked(); 935 } 936 } 937 } 938 939 private boolean wakeUpNoUpdateLocked(long eventTime) { 940 if (DEBUG_SPEW) { 941 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 942 } 943 944 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 945 || !mBootCompleted || !mSystemReady) { 946 return false; 947 } 948 949 switch (mWakefulness) { 950 case WAKEFULNESS_ASLEEP: 951 Slog.i(TAG, "Waking up from sleep..."); 952 break; 953 case WAKEFULNESS_DREAMING: 954 Slog.i(TAG, "Waking up from dream..."); 955 break; 956 case WAKEFULNESS_DOZING: 957 Slog.i(TAG, "Waking up from dozing..."); 958 break; 959 } 960 961 mLastWakeTime = eventTime; 962 mDirty |= DIRTY_WAKEFULNESS; 963 mWakefulness = WAKEFULNESS_AWAKE; 964 setInteractiveStateLocked(true, 0); 965 966 userActivityNoUpdateLocked( 967 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 968 return true; 969 } 970 971 private void goToSleepInternal(long eventTime, int reason, int flags) { 972 synchronized (mLock) { 973 if (goToSleepNoUpdateLocked(eventTime, reason, flags)) { 974 updatePowerStateLocked(); 975 } 976 } 977 } 978 979 // This method is called goToSleep for historical reasons but we actually start 980 // dozing before really going to sleep. 981 @SuppressWarnings("deprecation") 982 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags) { 983 if (DEBUG_SPEW) { 984 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 985 + ", reason=" + reason + ", flags=" + flags); 986 } 987 988 if (eventTime < mLastWakeTime 989 || mWakefulness == WAKEFULNESS_ASLEEP 990 || mWakefulness == WAKEFULNESS_DOZING 991 || !mBootCompleted || !mSystemReady) { 992 return false; 993 } 994 995 switch (reason) { 996 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 997 Slog.i(TAG, "Going to sleep due to device administration policy..."); 998 break; 999 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1000 Slog.i(TAG, "Going to sleep due to screen timeout..."); 1001 break; 1002 default: 1003 Slog.i(TAG, "Going to sleep by user request..."); 1004 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 1005 break; 1006 } 1007 1008 mLastSleepTime = eventTime; 1009 mDirty |= DIRTY_WAKEFULNESS; 1010 mWakefulness = WAKEFULNESS_DOZING; 1011 mSandmanSummoned = true; 1012 setInteractiveStateLocked(false, reason); 1013 1014 // Report the number of wake locks that will be cleared by going to sleep. 1015 int numWakeLocksCleared = 0; 1016 final int numWakeLocks = mWakeLocks.size(); 1017 for (int i = 0; i < numWakeLocks; i++) { 1018 final WakeLock wakeLock = mWakeLocks.get(i); 1019 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1020 case PowerManager.FULL_WAKE_LOCK: 1021 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1022 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1023 numWakeLocksCleared += 1; 1024 break; 1025 } 1026 } 1027 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1028 1029 // Skip dozing if requested. 1030 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1031 reallyGoToSleepNoUpdateLocked(eventTime); 1032 } 1033 return true; 1034 } 1035 1036 private void napInternal(long eventTime) { 1037 synchronized (mLock) { 1038 if (napNoUpdateLocked(eventTime)) { 1039 updatePowerStateLocked(); 1040 } 1041 } 1042 } 1043 1044 private boolean napNoUpdateLocked(long eventTime) { 1045 if (DEBUG_SPEW) { 1046 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 1047 } 1048 1049 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1050 || !mBootCompleted || !mSystemReady) { 1051 return false; 1052 } 1053 1054 Slog.i(TAG, "Nap time..."); 1055 1056 mDirty |= DIRTY_WAKEFULNESS; 1057 mWakefulness = WAKEFULNESS_DREAMING; 1058 mSandmanSummoned = true; 1059 setInteractiveStateLocked(true, 0); 1060 return true; 1061 } 1062 1063 // Done dozing, drop everything and go to sleep. 1064 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1065 if (DEBUG_SPEW) { 1066 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1067 } 1068 1069 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1070 || !mBootCompleted || !mSystemReady) { 1071 return false; 1072 } 1073 1074 Slog.i(TAG, "Sleeping..."); 1075 1076 mDirty |= DIRTY_WAKEFULNESS; 1077 mWakefulness = WAKEFULNESS_ASLEEP; 1078 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1079 return true; 1080 } 1081 1082 private void setInteractiveStateLocked(boolean interactive, int reason) { 1083 if (mInteractive != interactive) { 1084 finishInteractiveStateChangeLocked(); 1085 1086 mInteractive = interactive; 1087 mInteractiveChanging = true; 1088 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1089 } 1090 } 1091 1092 private void finishInteractiveStateChangeLocked() { 1093 if (mInteractiveChanging) { 1094 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1095 mInteractiveChanging = false; 1096 } 1097 } 1098 1099 /** 1100 * Updates the global power state based on dirty bits recorded in mDirty. 1101 * 1102 * This is the main function that performs power state transitions. 1103 * We centralize them here so that we can recompute the power state completely 1104 * each time something important changes, and ensure that we do it the same 1105 * way each time. The point is to gather all of the transition logic here. 1106 */ 1107 private void updatePowerStateLocked() { 1108 if (!mSystemReady || mDirty == 0) { 1109 return; 1110 } 1111 if (!Thread.holdsLock(mLock)) { 1112 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1113 } 1114 1115 // Phase 0: Basic state updates. 1116 updateIsPoweredLocked(mDirty); 1117 updateStayOnLocked(mDirty); 1118 1119 // Phase 1: Update wakefulness. 1120 // Loop because the wake lock and user activity computations are influenced 1121 // by changes in wakefulness. 1122 final long now = SystemClock.uptimeMillis(); 1123 int dirtyPhase2 = 0; 1124 for (;;) { 1125 int dirtyPhase1 = mDirty; 1126 dirtyPhase2 |= dirtyPhase1; 1127 mDirty = 0; 1128 1129 updateWakeLockSummaryLocked(dirtyPhase1); 1130 updateUserActivitySummaryLocked(now, dirtyPhase1); 1131 if (!updateWakefulnessLocked(dirtyPhase1)) { 1132 break; 1133 } 1134 } 1135 1136 // Phase 2: Update dreams and display power state. 1137 updateDreamLocked(dirtyPhase2); 1138 updateDisplayPowerStateLocked(dirtyPhase2); 1139 1140 // Phase 3: Send notifications, if needed. 1141 if (mDisplayReady) { 1142 finishInteractiveStateChangeLocked(); 1143 } 1144 1145 // Phase 4: Update suspend blocker. 1146 // Because we might release the last suspend blocker here, we need to make sure 1147 // we finished everything else first! 1148 updateSuspendBlockerLocked(); 1149 } 1150 1151 /** 1152 * Updates the value of mIsPowered. 1153 * Sets DIRTY_IS_POWERED if a change occurred. 1154 */ 1155 private void updateIsPoweredLocked(int dirty) { 1156 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1157 final boolean wasPowered = mIsPowered; 1158 final int oldPlugType = mPlugType; 1159 final boolean oldLevelLow = mBatteryLevelLow; 1160 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1161 mPlugType = mBatteryService.getPlugType(); 1162 mBatteryLevel = mBatteryService.getBatteryLevel(); 1163 mBatteryLevelLow = mBatteryService.getBatteryLevelLow(); 1164 1165 if (DEBUG_SPEW) { 1166 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1167 + ", mIsPowered=" + mIsPowered 1168 + ", oldPlugType=" + oldPlugType 1169 + ", mPlugType=" + mPlugType 1170 + ", mBatteryLevel=" + mBatteryLevel); 1171 } 1172 1173 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1174 mDirty |= DIRTY_IS_POWERED; 1175 1176 // Update wireless dock detection state. 1177 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1178 mIsPowered, mPlugType, mBatteryLevel); 1179 1180 // Treat plugging and unplugging the devices as a user activity. 1181 // Users find it disconcerting when they plug or unplug the device 1182 // and it shuts off right away. 1183 // Some devices also wake the device when plugged or unplugged because 1184 // they don't have a charging LED. 1185 final long now = SystemClock.uptimeMillis(); 1186 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1187 dockedOnWirelessCharger)) { 1188 wakeUpNoUpdateLocked(now); 1189 } 1190 userActivityNoUpdateLocked( 1191 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1192 1193 // Tell the notifier whether wireless charging has started so that 1194 // it can provide feedback to the user. 1195 if (dockedOnWirelessCharger) { 1196 mNotifier.onWirelessChargingStarted(); 1197 } 1198 } 1199 1200 if (oldLevelLow != mBatteryLevelLow) { 1201 updateLowPowerModeLocked(); 1202 } 1203 } 1204 } 1205 1206 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1207 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1208 // Don't wake when powered unless configured to do so. 1209 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1210 return false; 1211 } 1212 1213 // Don't wake when undocked from wireless charger. 1214 // See WirelessChargerDetector for justification. 1215 if (wasPowered && !mIsPowered 1216 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1217 return false; 1218 } 1219 1220 // Don't wake when docked on wireless charger unless we are certain of it. 1221 // See WirelessChargerDetector for justification. 1222 if (!wasPowered && mIsPowered 1223 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1224 && !dockedOnWirelessCharger) { 1225 return false; 1226 } 1227 1228 // If already dreaming and becoming powered, then don't wake. 1229 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1230 return false; 1231 } 1232 1233 // Otherwise wake up! 1234 return true; 1235 } 1236 1237 /** 1238 * Updates the value of mStayOn. 1239 * Sets DIRTY_STAY_ON if a change occurred. 1240 */ 1241 private void updateStayOnLocked(int dirty) { 1242 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1243 final boolean wasStayOn = mStayOn; 1244 if (mStayOnWhilePluggedInSetting != 0 1245 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1246 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1247 } else { 1248 mStayOn = false; 1249 } 1250 1251 if (mStayOn != wasStayOn) { 1252 mDirty |= DIRTY_STAY_ON; 1253 } 1254 } 1255 } 1256 1257 /** 1258 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1259 * Note that most wake-locks are ignored when the system is asleep. 1260 * 1261 * This function must have no other side-effects. 1262 */ 1263 @SuppressWarnings("deprecation") 1264 private void updateWakeLockSummaryLocked(int dirty) { 1265 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1266 mWakeLockSummary = 0; 1267 1268 final int numWakeLocks = mWakeLocks.size(); 1269 for (int i = 0; i < numWakeLocks; i++) { 1270 final WakeLock wakeLock = mWakeLocks.get(i); 1271 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1272 case PowerManager.PARTIAL_WAKE_LOCK: 1273 mWakeLockSummary |= WAKE_LOCK_CPU; 1274 break; 1275 case PowerManager.FULL_WAKE_LOCK: 1276 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1277 break; 1278 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1279 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1280 break; 1281 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1282 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1283 break; 1284 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1285 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1286 break; 1287 case PowerManager.DOZE_WAKE_LOCK: 1288 mWakeLockSummary |= WAKE_LOCK_DOZE; 1289 break; 1290 } 1291 } 1292 1293 // Cancel wake locks that make no sense based on the current state. 1294 if (mWakefulness != WAKEFULNESS_DOZING) { 1295 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1296 } 1297 if (mWakefulness == WAKEFULNESS_ASLEEP 1298 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1299 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1300 | WAKE_LOCK_BUTTON_BRIGHT); 1301 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1302 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1303 } 1304 } 1305 1306 // Infer implied wake locks where necessary based on the current state. 1307 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1308 if (mWakefulness == WAKEFULNESS_AWAKE) { 1309 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1310 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1311 mWakeLockSummary |= WAKE_LOCK_CPU; 1312 } 1313 } 1314 1315 if (DEBUG_SPEW) { 1316 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1317 + wakefulnessToString(mWakefulness) 1318 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1319 } 1320 } 1321 } 1322 1323 /** 1324 * Updates the value of mUserActivitySummary to summarize the user requested 1325 * state of the system such as whether the screen should be bright or dim. 1326 * Note that user activity is ignored when the system is asleep. 1327 * 1328 * This function must have no other side-effects. 1329 */ 1330 private void updateUserActivitySummaryLocked(long now, int dirty) { 1331 // Update the status of the user activity timeout timer. 1332 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1333 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1334 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1335 1336 long nextTimeout = 0; 1337 if (mWakefulness == WAKEFULNESS_AWAKE 1338 || mWakefulness == WAKEFULNESS_DREAMING 1339 || mWakefulness == WAKEFULNESS_DOZING) { 1340 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1341 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1342 1343 mUserActivitySummary = 0; 1344 if (mLastUserActivityTime >= mLastWakeTime) { 1345 nextTimeout = mLastUserActivityTime 1346 + screenOffTimeout - screenDimDuration; 1347 if (now < nextTimeout) { 1348 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1349 } else { 1350 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1351 if (now < nextTimeout) { 1352 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1353 } 1354 } 1355 } 1356 if (mUserActivitySummary == 0 1357 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1358 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1359 if (now < nextTimeout 1360 && mDisplayPowerRequest.wantScreenOnNormal()) { 1361 mUserActivitySummary = mDisplayPowerRequest.screenState 1362 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1363 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1364 } 1365 } 1366 if (mUserActivitySummary != 0) { 1367 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1368 msg.setAsynchronous(true); 1369 mHandler.sendMessageAtTime(msg, nextTimeout); 1370 } 1371 } else { 1372 mUserActivitySummary = 0; 1373 } 1374 1375 if (DEBUG_SPEW) { 1376 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1377 + wakefulnessToString(mWakefulness) 1378 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1379 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1380 } 1381 } 1382 } 1383 1384 /** 1385 * Called when a user activity timeout has occurred. 1386 * Simply indicates that something about user activity has changed so that the new 1387 * state can be recomputed when the power state is updated. 1388 * 1389 * This function must have no other side-effects besides setting the dirty 1390 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1391 */ 1392 private void handleUserActivityTimeout() { // runs on handler thread 1393 synchronized (mLock) { 1394 if (DEBUG_SPEW) { 1395 Slog.d(TAG, "handleUserActivityTimeout"); 1396 } 1397 1398 mDirty |= DIRTY_USER_ACTIVITY; 1399 updatePowerStateLocked(); 1400 } 1401 } 1402 1403 private int getScreenOffTimeoutLocked() { 1404 int timeout = mScreenOffTimeoutSetting; 1405 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1406 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1407 } 1408 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1409 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1410 } 1411 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1412 } 1413 1414 private int getScreenDimDurationLocked(int screenOffTimeout) { 1415 return Math.min(mMaximumScreenDimDurationConfig, 1416 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1417 } 1418 1419 /** 1420 * Updates the wakefulness of the device. 1421 * 1422 * This is the function that decides whether the device should start dreaming 1423 * based on the current wake locks and user activity state. It may modify mDirty 1424 * if the wakefulness changes. 1425 * 1426 * Returns true if the wakefulness changed and we need to restart power state calculation. 1427 */ 1428 private boolean updateWakefulnessLocked(int dirty) { 1429 boolean changed = false; 1430 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1431 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1432 | DIRTY_DOCK_STATE)) != 0) { 1433 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1434 if (DEBUG_SPEW) { 1435 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1436 } 1437 final long time = SystemClock.uptimeMillis(); 1438 if (shouldNapAtBedTimeLocked()) { 1439 changed = napNoUpdateLocked(time); 1440 } else { 1441 changed = goToSleepNoUpdateLocked(time, 1442 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1443 } 1444 } 1445 } 1446 return changed; 1447 } 1448 1449 /** 1450 * Returns true if the device should automatically nap and start dreaming when the user 1451 * activity timeout has expired and it's bedtime. 1452 */ 1453 private boolean shouldNapAtBedTimeLocked() { 1454 return mDreamsActivateOnSleepSetting 1455 || (mDreamsActivateOnDockSetting 1456 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1457 } 1458 1459 /** 1460 * Returns true if the device should go to sleep now. 1461 * Also used when exiting a dream to determine whether we should go back 1462 * to being fully awake or else go to sleep for good. 1463 */ 1464 private boolean isItBedTimeYetLocked() { 1465 return mBootCompleted && !isBeingKeptAwakeLocked(); 1466 } 1467 1468 /** 1469 * Returns true if the device is being kept awake by a wake lock, user activity 1470 * or the stay on while powered setting. We also keep the phone awake when 1471 * the proximity sensor returns a positive result so that the device does not 1472 * lock while in a phone call. This function only controls whether the device 1473 * will go to sleep or dream which is independent of whether it will be allowed 1474 * to suspend. 1475 */ 1476 private boolean isBeingKeptAwakeLocked() { 1477 return mStayOn 1478 || mProximityPositive 1479 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1480 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1481 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1482 } 1483 1484 /** 1485 * Determines whether to post a message to the sandman to update the dream state. 1486 */ 1487 private void updateDreamLocked(int dirty) { 1488 if ((dirty & (DIRTY_WAKEFULNESS 1489 | DIRTY_USER_ACTIVITY 1490 | DIRTY_WAKE_LOCKS 1491 | DIRTY_BOOT_COMPLETED 1492 | DIRTY_SETTINGS 1493 | DIRTY_IS_POWERED 1494 | DIRTY_STAY_ON 1495 | DIRTY_PROXIMITY_POSITIVE 1496 | DIRTY_BATTERY_STATE)) != 0) { 1497 scheduleSandmanLocked(); 1498 } 1499 } 1500 1501 private void scheduleSandmanLocked() { 1502 if (!mSandmanScheduled) { 1503 mSandmanScheduled = true; 1504 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1505 msg.setAsynchronous(true); 1506 mHandler.sendMessage(msg); 1507 } 1508 } 1509 1510 /** 1511 * Called when the device enters or exits a dreaming or dozing state. 1512 * 1513 * We do this asynchronously because we must call out of the power manager to start 1514 * the dream and we don't want to hold our lock while doing so. There is a risk that 1515 * the device will wake or go to sleep in the meantime so we have to handle that case. 1516 */ 1517 private void handleSandman() { // runs on handler thread 1518 // Handle preconditions. 1519 final boolean startDreaming; 1520 final int wakefulness; 1521 synchronized (mLock) { 1522 mSandmanScheduled = false; 1523 wakefulness = mWakefulness; 1524 if (mSandmanSummoned) { 1525 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1526 || wakefulness == WAKEFULNESS_DOZING); 1527 mSandmanSummoned = false; 1528 } else { 1529 startDreaming = false; 1530 } 1531 } 1532 1533 // Start dreaming if needed. 1534 // We only control the dream on the handler thread, so we don't need to worry about 1535 // concurrent attempts to start or stop the dream. 1536 final boolean isDreaming; 1537 if (mDreamManager != null) { 1538 // Restart the dream whenever the sandman is summoned. 1539 if (startDreaming) { 1540 mDreamManager.stopDream(); 1541 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1542 } 1543 isDreaming = mDreamManager.isDreaming(); 1544 } else { 1545 isDreaming = false; 1546 } 1547 1548 // Update dream state. 1549 synchronized (mLock) { 1550 // Remember the initial battery level when the dream started. 1551 if (startDreaming && isDreaming) { 1552 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1553 if (wakefulness == WAKEFULNESS_DOZING) { 1554 Slog.i(TAG, "Dozing..."); 1555 } else { 1556 Slog.i(TAG, "Dreaming..."); 1557 } 1558 } 1559 1560 // If preconditions changed, wait for the next iteration to determine 1561 // whether the dream should continue (or be restarted). 1562 if (mSandmanSummoned || mWakefulness != wakefulness) { 1563 return; // wait for next cycle 1564 } 1565 1566 // Determine whether the dream should continue. 1567 if (wakefulness == WAKEFULNESS_DREAMING) { 1568 if (isDreaming && canDreamLocked()) { 1569 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1570 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1571 - mDreamsBatteryLevelDrainCutoffConfig 1572 && !isBeingKeptAwakeLocked()) { 1573 // If the user activity timeout expired and the battery appears 1574 // to be draining faster than it is charging then stop dreaming 1575 // and go to sleep. 1576 Slog.i(TAG, "Stopping dream because the battery appears to " 1577 + "be draining faster than it is charging. " 1578 + "Battery level when dream started: " 1579 + mBatteryLevelWhenDreamStarted + "%. " 1580 + "Battery level now: " + mBatteryLevel + "%."); 1581 } else { 1582 return; // continue dreaming 1583 } 1584 } 1585 1586 // Dream has ended or will be stopped. Update the power state. 1587 if (isItBedTimeYetLocked()) { 1588 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1589 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1590 updatePowerStateLocked(); 1591 } else { 1592 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1593 updatePowerStateLocked(); 1594 } 1595 } else if (wakefulness == WAKEFULNESS_DOZING) { 1596 if (isDreaming) { 1597 return; // continue dozing 1598 } 1599 1600 // Doze has ended or will be stopped. Update the power state. 1601 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1602 updatePowerStateLocked(); 1603 } 1604 } 1605 1606 // Stop dream. 1607 if (isDreaming) { 1608 mDreamManager.stopDream(); 1609 } 1610 } 1611 1612 /** 1613 * Returns true if the device is allowed to dream in its current state. 1614 * This function is not called when dozing. 1615 */ 1616 private boolean canDreamLocked() { 1617 if (mWakefulness != WAKEFULNESS_DREAMING 1618 || !mDreamsSupportedConfig 1619 || !mDreamsEnabledSetting 1620 || !mDisplayPowerRequest.wantScreenOnNormal() 1621 || !mBootCompleted) { 1622 return false; 1623 } 1624 if (!isBeingKeptAwakeLocked()) { 1625 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1626 return false; 1627 } 1628 if (!mIsPowered 1629 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1630 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1631 return false; 1632 } 1633 if (mIsPowered 1634 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1635 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1636 return false; 1637 } 1638 } 1639 return true; 1640 } 1641 1642 private void handleScreenOnBlockerReleased() { 1643 synchronized (mLock) { 1644 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1645 updatePowerStateLocked(); 1646 } 1647 } 1648 1649 /** 1650 * Updates the display power state asynchronously. 1651 * When the update is finished, mDisplayReady will be set to true. The display 1652 * controller posts a message to tell us when the actual display power state 1653 * has been updated so we come back here to double-check and finish up. 1654 * 1655 * This function recalculates the display power state each time. 1656 */ 1657 private void updateDisplayPowerStateLocked(int dirty) { 1658 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1659 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1660 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1661 final int newScreenState = getDesiredScreenPowerStateLocked(); 1662 mDisplayPowerRequest.screenState = newScreenState; 1663 1664 int screenBrightness = mScreenBrightnessSettingDefault; 1665 float screenAutoBrightnessAdjustment = 0.0f; 1666 boolean autoBrightness = (mScreenBrightnessModeSetting == 1667 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1668 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1669 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1670 autoBrightness = false; 1671 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1672 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1673 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1674 screenBrightness = mScreenBrightnessSetting; 1675 } 1676 if (autoBrightness) { 1677 screenBrightness = mScreenBrightnessSettingDefault; 1678 if (isValidAutoBrightnessAdjustment( 1679 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1680 screenAutoBrightnessAdjustment = 1681 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1682 } else if (isValidAutoBrightnessAdjustment( 1683 mScreenAutoBrightnessAdjustmentSetting)) { 1684 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1685 } 1686 } 1687 screenBrightness = Math.max(Math.min(screenBrightness, 1688 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1689 screenAutoBrightnessAdjustment = Math.max(Math.min( 1690 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1691 mDisplayPowerRequest.screenBrightness = screenBrightness; 1692 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1693 screenAutoBrightnessAdjustment; 1694 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1695 1696 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1697 1698 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1699 1700 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1701 1702 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1703 mRequestWaitForNegativeProximity); 1704 mRequestWaitForNegativeProximity = false; 1705 1706 if (DEBUG_SPEW) { 1707 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1708 + ", newScreenState=" + newScreenState 1709 + ", mWakefulness=" + mWakefulness 1710 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1711 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1712 + ", mBootCompleted=" + mBootCompleted); 1713 } 1714 } 1715 } 1716 1717 private static boolean isValidBrightness(int value) { 1718 return value >= 0 && value <= 255; 1719 } 1720 1721 private static boolean isValidAutoBrightnessAdjustment(float value) { 1722 // Handles NaN by always returning false. 1723 return value >= -1.0f && value <= 1.0f; 1724 } 1725 1726 private int getDesiredScreenPowerStateLocked() { 1727 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1728 return DisplayPowerRequest.SCREEN_STATE_OFF; 1729 } 1730 1731 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1732 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1733 } 1734 1735 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1736 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1737 || !mBootCompleted) { 1738 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1739 } 1740 1741 return DisplayPowerRequest.SCREEN_STATE_DIM; 1742 } 1743 1744 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1745 new DisplayManagerInternal.DisplayPowerCallbacks() { 1746 private int mDisplayState = Display.STATE_UNKNOWN; 1747 1748 @Override 1749 public void onStateChanged() { 1750 synchronized (mLock) { 1751 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1752 updatePowerStateLocked(); 1753 } 1754 } 1755 1756 @Override 1757 public void onProximityPositive() { 1758 synchronized (mLock) { 1759 mProximityPositive = true; 1760 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1761 updatePowerStateLocked(); 1762 } 1763 } 1764 1765 @Override 1766 public void onProximityNegative() { 1767 synchronized (mLock) { 1768 mProximityPositive = false; 1769 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1770 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1771 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1772 updatePowerStateLocked(); 1773 } 1774 } 1775 1776 @Override 1777 public void onDisplayStateChange(int state) { 1778 // This method is only needed to support legacy display blanking behavior 1779 // where the display's power state is coupled to suspend or to the power HAL. 1780 // The order of operations matters here. 1781 synchronized (mLock) { 1782 if (mDisplayState != state) { 1783 mDisplayState = state; 1784 if (state == Display.STATE_OFF) { 1785 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1786 setHalInteractiveModeLocked(false); 1787 } 1788 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1789 setHalAutoSuspendModeLocked(true); 1790 } 1791 } else { 1792 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1793 setHalAutoSuspendModeLocked(false); 1794 } 1795 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1796 setHalInteractiveModeLocked(true); 1797 } 1798 } 1799 } 1800 } 1801 } 1802 1803 @Override 1804 public void acquireSuspendBlocker() { 1805 mDisplaySuspendBlocker.acquire(); 1806 } 1807 1808 @Override 1809 public void releaseSuspendBlocker() { 1810 mDisplaySuspendBlocker.release(); 1811 } 1812 1813 @Override 1814 public String toString() { 1815 synchronized (this) { 1816 return "state=" + Display.stateToString(mDisplayState); 1817 } 1818 } 1819 }; 1820 1821 private boolean shouldUseProximitySensorLocked() { 1822 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1823 } 1824 1825 /** 1826 * Updates the suspend blocker that keeps the CPU alive. 1827 * 1828 * This function must have no other side-effects. 1829 */ 1830 private void updateSuspendBlockerLocked() { 1831 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1832 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1833 final boolean autoSuspend = !needDisplaySuspendBlocker; 1834 1835 // Disable auto-suspend if needed. 1836 if (!autoSuspend) { 1837 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1838 setHalAutoSuspendModeLocked(false); 1839 } 1840 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1841 setHalInteractiveModeLocked(true); 1842 } 1843 } 1844 1845 // First acquire suspend blockers if needed. 1846 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1847 mWakeLockSuspendBlocker.acquire(); 1848 mHoldingWakeLockSuspendBlocker = true; 1849 } 1850 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1851 mDisplaySuspendBlocker.acquire(); 1852 mHoldingDisplaySuspendBlocker = true; 1853 } 1854 1855 // Then release suspend blockers if needed. 1856 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1857 mWakeLockSuspendBlocker.release(); 1858 mHoldingWakeLockSuspendBlocker = false; 1859 } 1860 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1861 mDisplaySuspendBlocker.release(); 1862 mHoldingDisplaySuspendBlocker = false; 1863 } 1864 1865 // Enable auto-suspend if needed. 1866 if (autoSuspend) { 1867 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1868 setHalInteractiveModeLocked(false); 1869 } 1870 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1871 setHalAutoSuspendModeLocked(true); 1872 } 1873 } 1874 } 1875 1876 /** 1877 * Return true if we must keep a suspend blocker active on behalf of the display. 1878 * We do so if the screen is on or is in transition between states. 1879 */ 1880 private boolean needDisplaySuspendBlockerLocked() { 1881 if (!mDisplayReady) { 1882 return true; 1883 } 1884 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1885 // If we asked for the screen to be on but it is off due to the proximity 1886 // sensor then we may suspend but only if the configuration allows it. 1887 // On some hardware it may not be safe to suspend because the proximity 1888 // sensor may not be correctly configured as a wake-up source. 1889 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1890 || !mSuspendWhenScreenOffDueToProximityConfig) { 1891 return true; 1892 } 1893 } 1894 // Let the system suspend if the screen is off or dozing. 1895 return false; 1896 } 1897 1898 private void setHalAutoSuspendModeLocked(boolean enable) { 1899 if (enable != mHalAutoSuspendModeEnabled) { 1900 if (DEBUG) { 1901 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1902 } 1903 mHalAutoSuspendModeEnabled = enable; 1904 nativeSetAutoSuspend(enable); 1905 } 1906 } 1907 1908 private void setHalInteractiveModeLocked(boolean enable) { 1909 if (enable != mHalInteractiveModeEnabled) { 1910 if (DEBUG) { 1911 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1912 } 1913 mHalInteractiveModeEnabled = enable; 1914 nativeSetInteractive(enable); 1915 } 1916 } 1917 1918 private boolean isInteractiveInternal() { 1919 synchronized (mLock) { 1920 return mInteractive; 1921 } 1922 } 1923 1924 private boolean isLowPowerModeInternal() { 1925 synchronized (mLock) { 1926 return mLowPowerModeEnabled; 1927 } 1928 } 1929 1930 private void handleBatteryStateChangedLocked() { 1931 mDirty |= DIRTY_BATTERY_STATE; 1932 updatePowerStateLocked(); 1933 } 1934 1935 private void startWatchingForBootAnimationFinished() { 1936 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1937 } 1938 1939 private void checkIfBootAnimationFinished() { 1940 if (DEBUG) { 1941 Slog.d(TAG, "Check if boot animation finished..."); 1942 } 1943 1944 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1945 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1946 BOOT_ANIMATION_POLL_INTERVAL); 1947 return; 1948 } 1949 1950 synchronized (mLock) { 1951 if (!mBootCompleted) { 1952 Slog.i(TAG, "Boot animation finished."); 1953 handleBootCompletedLocked(); 1954 } 1955 } 1956 } 1957 1958 private void handleBootCompletedLocked() { 1959 final long now = SystemClock.uptimeMillis(); 1960 mBootCompleted = true; 1961 mDirty |= DIRTY_BOOT_COMPLETED; 1962 userActivityNoUpdateLocked( 1963 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1964 updatePowerStateLocked(); 1965 } 1966 1967 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1968 final String reason, boolean wait) { 1969 if (mHandler == null || !mSystemReady) { 1970 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1971 } 1972 1973 Runnable runnable = new Runnable() { 1974 @Override 1975 public void run() { 1976 synchronized (this) { 1977 if (shutdown) { 1978 ShutdownThread.shutdown(mContext, confirm); 1979 } else { 1980 ShutdownThread.reboot(mContext, reason, confirm); 1981 } 1982 } 1983 } 1984 }; 1985 1986 // ShutdownThread must run on a looper capable of displaying the UI. 1987 Message msg = Message.obtain(mHandler, runnable); 1988 msg.setAsynchronous(true); 1989 mHandler.sendMessage(msg); 1990 1991 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1992 if (wait) { 1993 synchronized (runnable) { 1994 while (true) { 1995 try { 1996 runnable.wait(); 1997 } catch (InterruptedException e) { 1998 } 1999 } 2000 } 2001 } 2002 } 2003 2004 private void crashInternal(final String message) { 2005 Thread t = new Thread("PowerManagerService.crash()") { 2006 @Override 2007 public void run() { 2008 throw new RuntimeException(message); 2009 } 2010 }; 2011 try { 2012 t.start(); 2013 t.join(); 2014 } catch (InterruptedException e) { 2015 Log.wtf(TAG, e); 2016 } 2017 } 2018 2019 private void setStayOnSettingInternal(int val) { 2020 Settings.Global.putInt(mContext.getContentResolver(), 2021 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2022 } 2023 2024 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2025 synchronized (mLock) { 2026 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2027 mDirty |= DIRTY_SETTINGS; 2028 updatePowerStateLocked(); 2029 } 2030 } 2031 2032 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2033 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2034 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2035 } 2036 2037 private void setAttentionLightInternal(boolean on, int color) { 2038 Light light; 2039 synchronized (mLock) { 2040 if (!mSystemReady) { 2041 return; 2042 } 2043 light = mAttentionLight; 2044 } 2045 2046 // Control light outside of lock. 2047 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2048 } 2049 2050 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2051 synchronized (mLock) { 2052 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2053 mScreenBrightnessOverrideFromWindowManager = brightness; 2054 mDirty |= DIRTY_SETTINGS; 2055 updatePowerStateLocked(); 2056 } 2057 } 2058 } 2059 2060 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2061 synchronized (mLock) { 2062 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2063 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2064 mDirty |= DIRTY_SETTINGS; 2065 updatePowerStateLocked(); 2066 } 2067 } 2068 } 2069 2070 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2071 synchronized (mLock) { 2072 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2073 mTemporaryScreenBrightnessSettingOverride = brightness; 2074 mDirty |= DIRTY_SETTINGS; 2075 updatePowerStateLocked(); 2076 } 2077 } 2078 } 2079 2080 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2081 synchronized (mLock) { 2082 // Note: This condition handles NaN because NaN is not equal to any other 2083 // value, including itself. 2084 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2085 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2086 mDirty |= DIRTY_SETTINGS; 2087 updatePowerStateLocked(); 2088 } 2089 } 2090 } 2091 2092 private void powerHintInternal(int hintId, int data) { 2093 nativeSendPowerHint(hintId, data); 2094 } 2095 2096 /** 2097 * Low-level function turn the device off immediately, without trying 2098 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2099 */ 2100 public static void lowLevelShutdown() { 2101 SystemProperties.set("sys.powerctl", "shutdown"); 2102 } 2103 2104 /** 2105 * Low-level function to reboot the device. On success, this 2106 * function doesn't return. If more than 20 seconds passes from 2107 * the time a reboot is requested (120 seconds for reboot to 2108 * recovery), this method returns. 2109 * 2110 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2111 */ 2112 public static void lowLevelReboot(String reason) { 2113 if (reason == null) { 2114 reason = ""; 2115 } 2116 long duration; 2117 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2118 // If we are rebooting to go into recovery, instead of 2119 // setting sys.powerctl directly we'll start the 2120 // pre-recovery service which will do some preparation for 2121 // recovery and then reboot for us. 2122 // 2123 // This preparation can take more than 20 seconds if 2124 // there's a very large update package, so lengthen the 2125 // timeout. 2126 SystemProperties.set("ctl.start", "pre-recovery"); 2127 duration = 120 * 1000L; 2128 } else { 2129 SystemProperties.set("sys.powerctl", "reboot," + reason); 2130 duration = 20 * 1000L; 2131 } 2132 try { 2133 Thread.sleep(duration); 2134 } catch (InterruptedException e) { 2135 Thread.currentThread().interrupt(); 2136 } 2137 } 2138 2139 @Override // Watchdog.Monitor implementation 2140 public void monitor() { 2141 // Grab and release lock for watchdog monitor to detect deadlocks. 2142 synchronized (mLock) { 2143 } 2144 } 2145 2146 private void dumpInternal(PrintWriter pw) { 2147 pw.println("POWER MANAGER (dumpsys power)\n"); 2148 2149 final WirelessChargerDetector wcd; 2150 synchronized (mLock) { 2151 pw.println("Power Manager State:"); 2152 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2153 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2154 pw.println(" mInteractive=" + mInteractive); 2155 pw.println(" mIsPowered=" + mIsPowered); 2156 pw.println(" mPlugType=" + mPlugType); 2157 pw.println(" mBatteryLevel=" + mBatteryLevel); 2158 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2159 pw.println(" mDockState=" + mDockState); 2160 pw.println(" mStayOn=" + mStayOn); 2161 pw.println(" mProximityPositive=" + mProximityPositive); 2162 pw.println(" mBootCompleted=" + mBootCompleted); 2163 pw.println(" mSystemReady=" + mSystemReady); 2164 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2165 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2166 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2167 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2168 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2169 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2170 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2171 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2172 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2173 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2174 pw.println(" mLastUserActivityTimeNoChangeLights=" 2175 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2176 pw.println(" mDisplayReady=" + mDisplayReady); 2177 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2178 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2179 2180 pw.println(); 2181 pw.println("Settings and Configuration:"); 2182 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2183 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2184 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2185 + mDecoupleHalInteractiveModeFromDisplayConfig); 2186 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2187 + mWakeUpWhenPluggedOrUnpluggedConfig); 2188 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2189 + mSuspendWhenScreenOffDueToProximityConfig); 2190 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2191 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2192 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2193 + mDreamsActivatedOnSleepByDefaultConfig); 2194 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2195 + mDreamsActivatedOnDockByDefaultConfig); 2196 pw.println(" mDreamsEnabledOnBatteryConfig=" 2197 + mDreamsEnabledOnBatteryConfig); 2198 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2199 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2200 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2201 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2202 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2203 + mDreamsBatteryLevelDrainCutoffConfig); 2204 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2205 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2206 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2207 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2208 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2209 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2210 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2211 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2212 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2213 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2214 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2215 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2216 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2217 + mScreenAutoBrightnessAdjustmentSetting); 2218 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2219 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2220 + mScreenBrightnessOverrideFromWindowManager); 2221 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2222 + mUserActivityTimeoutOverrideFromWindowManager); 2223 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2224 + mTemporaryScreenBrightnessSettingOverride); 2225 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2226 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2227 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2228 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2229 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2230 2231 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2232 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2233 pw.println(); 2234 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2235 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2236 2237 pw.println(); 2238 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2239 for (WakeLock wl : mWakeLocks) { 2240 pw.println(" " + wl); 2241 } 2242 2243 pw.println(); 2244 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2245 for (SuspendBlocker sb : mSuspendBlockers) { 2246 pw.println(" " + sb); 2247 } 2248 2249 pw.println(); 2250 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2251 2252 pw.println(); 2253 pw.println("Display Power: " + mDisplayPowerCallbacks); 2254 2255 wcd = mWirelessChargerDetector; 2256 } 2257 2258 if (wcd != null) { 2259 wcd.dump(pw); 2260 } 2261 } 2262 2263 private SuspendBlocker createSuspendBlockerLocked(String name) { 2264 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2265 mSuspendBlockers.add(suspendBlocker); 2266 return suspendBlocker; 2267 } 2268 2269 private static String wakefulnessToString(int wakefulness) { 2270 switch (wakefulness) { 2271 case WAKEFULNESS_ASLEEP: 2272 return "Asleep"; 2273 case WAKEFULNESS_AWAKE: 2274 return "Awake"; 2275 case WAKEFULNESS_DREAMING: 2276 return "Dreaming"; 2277 case WAKEFULNESS_DOZING: 2278 return "Dozing"; 2279 default: 2280 return Integer.toString(wakefulness); 2281 } 2282 } 2283 2284 private static WorkSource copyWorkSource(WorkSource workSource) { 2285 return workSource != null ? new WorkSource(workSource) : null; 2286 } 2287 2288 private final class BatteryReceiver extends BroadcastReceiver { 2289 @Override 2290 public void onReceive(Context context, Intent intent) { 2291 synchronized (mLock) { 2292 handleBatteryStateChangedLocked(); 2293 } 2294 } 2295 } 2296 2297 private final class BootCompletedReceiver extends BroadcastReceiver { 2298 @Override 2299 public void onReceive(Context context, Intent intent) { 2300 // This is our early signal that the system thinks it has finished booting. 2301 // However, the boot animation may still be running for a few more seconds 2302 // since it is ultimately in charge of when it terminates. 2303 // Defer transitioning into the boot completed state until the animation exits. 2304 // We do this so that the screen does not start to dim prematurely before 2305 // the user has actually had a chance to interact with the device. 2306 startWatchingForBootAnimationFinished(); 2307 } 2308 } 2309 2310 private final class DreamReceiver extends BroadcastReceiver { 2311 @Override 2312 public void onReceive(Context context, Intent intent) { 2313 synchronized (mLock) { 2314 scheduleSandmanLocked(); 2315 } 2316 } 2317 } 2318 2319 private final class UserSwitchedReceiver extends BroadcastReceiver { 2320 @Override 2321 public void onReceive(Context context, Intent intent) { 2322 synchronized (mLock) { 2323 handleSettingsChangedLocked(); 2324 } 2325 } 2326 } 2327 2328 private final class DockReceiver extends BroadcastReceiver { 2329 @Override 2330 public void onReceive(Context context, Intent intent) { 2331 synchronized (mLock) { 2332 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2333 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2334 if (mDockState != dockState) { 2335 mDockState = dockState; 2336 mDirty |= DIRTY_DOCK_STATE; 2337 updatePowerStateLocked(); 2338 } 2339 } 2340 } 2341 } 2342 2343 private final class SettingsObserver extends ContentObserver { 2344 public SettingsObserver(Handler handler) { 2345 super(handler); 2346 } 2347 2348 @Override 2349 public void onChange(boolean selfChange, Uri uri) { 2350 synchronized (mLock) { 2351 handleSettingsChangedLocked(); 2352 } 2353 } 2354 } 2355 2356 /** 2357 * Handler for asynchronous operations performed by the power manager. 2358 */ 2359 private final class PowerManagerHandler extends Handler { 2360 public PowerManagerHandler(Looper looper) { 2361 super(looper, null, true /*async*/); 2362 } 2363 2364 @Override 2365 public void handleMessage(Message msg) { 2366 switch (msg.what) { 2367 case MSG_USER_ACTIVITY_TIMEOUT: 2368 handleUserActivityTimeout(); 2369 break; 2370 case MSG_SANDMAN: 2371 handleSandman(); 2372 break; 2373 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2374 handleScreenOnBlockerReleased(); 2375 break; 2376 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2377 checkIfBootAnimationFinished(); 2378 break; 2379 } 2380 } 2381 } 2382 2383 /** 2384 * Represents a wake lock that has been acquired by an application. 2385 */ 2386 private final class WakeLock implements IBinder.DeathRecipient { 2387 public final IBinder mLock; 2388 public int mFlags; 2389 public String mTag; 2390 public final String mPackageName; 2391 public WorkSource mWorkSource; 2392 public String mHistoryTag; 2393 public final int mOwnerUid; 2394 public final int mOwnerPid; 2395 public boolean mNotifiedAcquired; 2396 2397 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2398 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2399 mLock = lock; 2400 mFlags = flags; 2401 mTag = tag; 2402 mPackageName = packageName; 2403 mWorkSource = copyWorkSource(workSource); 2404 mHistoryTag = historyTag; 2405 mOwnerUid = ownerUid; 2406 mOwnerPid = ownerPid; 2407 } 2408 2409 @Override 2410 public void binderDied() { 2411 PowerManagerService.this.handleWakeLockDeath(this); 2412 } 2413 2414 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2415 int ownerUid, int ownerPid) { 2416 return mFlags == flags 2417 && mTag.equals(tag) 2418 && hasSameWorkSource(workSource) 2419 && mOwnerUid == ownerUid 2420 && mOwnerPid == ownerPid; 2421 } 2422 2423 public void updateProperties(int flags, String tag, String packageName, 2424 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2425 if (!mPackageName.equals(packageName)) { 2426 throw new IllegalStateException("Existing wake lock package name changed: " 2427 + mPackageName + " to " + packageName); 2428 } 2429 if (mOwnerUid != ownerUid) { 2430 throw new IllegalStateException("Existing wake lock uid changed: " 2431 + mOwnerUid + " to " + ownerUid); 2432 } 2433 if (mOwnerPid != ownerPid) { 2434 throw new IllegalStateException("Existing wake lock pid changed: " 2435 + mOwnerPid + " to " + ownerPid); 2436 } 2437 mFlags = flags; 2438 mTag = tag; 2439 updateWorkSource(workSource); 2440 mHistoryTag = historyTag; 2441 } 2442 2443 public boolean hasSameWorkSource(WorkSource workSource) { 2444 return Objects.equal(mWorkSource, workSource); 2445 } 2446 2447 public void updateWorkSource(WorkSource workSource) { 2448 mWorkSource = copyWorkSource(workSource); 2449 } 2450 2451 @Override 2452 public String toString() { 2453 return getLockLevelString() 2454 + " '" + mTag + "'" + getLockFlagsString() 2455 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2456 } 2457 2458 @SuppressWarnings("deprecation") 2459 private String getLockLevelString() { 2460 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2461 case PowerManager.FULL_WAKE_LOCK: 2462 return "FULL_WAKE_LOCK "; 2463 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2464 return "SCREEN_BRIGHT_WAKE_LOCK "; 2465 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2466 return "SCREEN_DIM_WAKE_LOCK "; 2467 case PowerManager.PARTIAL_WAKE_LOCK: 2468 return "PARTIAL_WAKE_LOCK "; 2469 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2470 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2471 case PowerManager.DOZE_WAKE_LOCK: 2472 return "DOZE_WAKE_LOCK "; 2473 default: 2474 return "??? "; 2475 } 2476 } 2477 2478 private String getLockFlagsString() { 2479 String result = ""; 2480 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2481 result += " ACQUIRE_CAUSES_WAKEUP"; 2482 } 2483 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2484 result += " ON_AFTER_RELEASE"; 2485 } 2486 return result; 2487 } 2488 } 2489 2490 private final class SuspendBlockerImpl implements SuspendBlocker { 2491 private final String mName; 2492 private int mReferenceCount; 2493 2494 public SuspendBlockerImpl(String name) { 2495 mName = name; 2496 } 2497 2498 @Override 2499 protected void finalize() throws Throwable { 2500 try { 2501 if (mReferenceCount != 0) { 2502 Log.wtf(TAG, "Suspend blocker \"" + mName 2503 + "\" was finalized without being released!"); 2504 mReferenceCount = 0; 2505 nativeReleaseSuspendBlocker(mName); 2506 } 2507 } finally { 2508 super.finalize(); 2509 } 2510 } 2511 2512 @Override 2513 public void acquire() { 2514 synchronized (this) { 2515 mReferenceCount += 1; 2516 if (mReferenceCount == 1) { 2517 if (DEBUG_SPEW) { 2518 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2519 } 2520 nativeAcquireSuspendBlocker(mName); 2521 } 2522 } 2523 } 2524 2525 @Override 2526 public void release() { 2527 synchronized (this) { 2528 mReferenceCount -= 1; 2529 if (mReferenceCount == 0) { 2530 if (DEBUG_SPEW) { 2531 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2532 } 2533 nativeReleaseSuspendBlocker(mName); 2534 } else if (mReferenceCount < 0) { 2535 Log.wtf(TAG, "Suspend blocker \"" + mName 2536 + "\" was released without being acquired!", new Throwable()); 2537 mReferenceCount = 0; 2538 } 2539 } 2540 } 2541 2542 @Override 2543 public String toString() { 2544 synchronized (this) { 2545 return mName + ": ref count=" + mReferenceCount; 2546 } 2547 } 2548 } 2549 2550 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2551 private int mNestCount; 2552 2553 public boolean isHeld() { 2554 synchronized (this) { 2555 return mNestCount != 0; 2556 } 2557 } 2558 2559 @Override 2560 public void acquire() { 2561 synchronized (this) { 2562 mNestCount += 1; 2563 if (DEBUG) { 2564 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2565 } 2566 } 2567 } 2568 2569 @Override 2570 public void release() { 2571 synchronized (this) { 2572 mNestCount -= 1; 2573 if (mNestCount < 0) { 2574 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2575 new Throwable()); 2576 mNestCount = 0; 2577 } 2578 if (mNestCount == 0) { 2579 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2580 } 2581 if (DEBUG) { 2582 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2583 } 2584 } 2585 } 2586 2587 @Override 2588 public String toString() { 2589 synchronized (this) { 2590 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2591 } 2592 } 2593 } 2594 2595 private final class BinderService extends IPowerManager.Stub { 2596 @Override // Binder call 2597 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2598 String packageName, int uid) { 2599 if (uid < 0) { 2600 uid = Binder.getCallingUid(); 2601 } 2602 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2603 } 2604 2605 @Override // Binder call 2606 public void powerHint(int hintId, int data) { 2607 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2608 powerHintInternal(hintId, data); 2609 } 2610 2611 @Override // Binder call 2612 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2613 WorkSource ws, String historyTag) { 2614 if (lock == null) { 2615 throw new IllegalArgumentException("lock must not be null"); 2616 } 2617 if (packageName == null) { 2618 throw new IllegalArgumentException("packageName must not be null"); 2619 } 2620 PowerManager.validateWakeLockParameters(flags, tag); 2621 2622 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2623 if (ws != null && ws.size() != 0) { 2624 mContext.enforceCallingOrSelfPermission( 2625 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2626 } else { 2627 ws = null; 2628 } 2629 2630 final int uid = Binder.getCallingUid(); 2631 final int pid = Binder.getCallingPid(); 2632 final long ident = Binder.clearCallingIdentity(); 2633 try { 2634 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2635 } finally { 2636 Binder.restoreCallingIdentity(ident); 2637 } 2638 } 2639 2640 @Override // Binder call 2641 public void releaseWakeLock(IBinder lock, int flags) { 2642 if (lock == null) { 2643 throw new IllegalArgumentException("lock must not be null"); 2644 } 2645 2646 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2647 2648 final long ident = Binder.clearCallingIdentity(); 2649 try { 2650 releaseWakeLockInternal(lock, flags); 2651 } finally { 2652 Binder.restoreCallingIdentity(ident); 2653 } 2654 } 2655 2656 @Override // Binder call 2657 public void updateWakeLockUids(IBinder lock, int[] uids) { 2658 WorkSource ws = null; 2659 2660 if (uids != null) { 2661 ws = new WorkSource(); 2662 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2663 // one at a time? 2664 for (int i = 0; i < uids.length; i++) { 2665 ws.add(uids[i]); 2666 } 2667 } 2668 updateWakeLockWorkSource(lock, ws, null); 2669 } 2670 2671 @Override // Binder call 2672 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2673 if (lock == null) { 2674 throw new IllegalArgumentException("lock must not be null"); 2675 } 2676 2677 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2678 if (ws != null && ws.size() != 0) { 2679 mContext.enforceCallingOrSelfPermission( 2680 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2681 } else { 2682 ws = null; 2683 } 2684 2685 final long ident = Binder.clearCallingIdentity(); 2686 try { 2687 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2688 } finally { 2689 Binder.restoreCallingIdentity(ident); 2690 } 2691 } 2692 2693 @Override // Binder call 2694 public boolean isWakeLockLevelSupported(int level) { 2695 final long ident = Binder.clearCallingIdentity(); 2696 try { 2697 return isWakeLockLevelSupportedInternal(level); 2698 } finally { 2699 Binder.restoreCallingIdentity(ident); 2700 } 2701 } 2702 2703 @Override // Binder call 2704 public void userActivity(long eventTime, int event, int flags) { 2705 final long now = SystemClock.uptimeMillis(); 2706 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2707 != PackageManager.PERMISSION_GRANTED) { 2708 // Once upon a time applications could call userActivity(). 2709 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2710 // request instead of throwing a SecurityException so we don't break old apps. 2711 synchronized (mLock) { 2712 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2713 mLastWarningAboutUserActivityPermission = now; 2714 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2715 + "caller does not have DEVICE_POWER permission. " 2716 + "Please fix your app! " 2717 + " pid=" + Binder.getCallingPid() 2718 + " uid=" + Binder.getCallingUid()); 2719 } 2720 } 2721 return; 2722 } 2723 2724 if (eventTime > SystemClock.uptimeMillis()) { 2725 throw new IllegalArgumentException("event time must not be in the future"); 2726 } 2727 2728 final int uid = Binder.getCallingUid(); 2729 final long ident = Binder.clearCallingIdentity(); 2730 try { 2731 userActivityInternal(eventTime, event, flags, uid); 2732 } finally { 2733 Binder.restoreCallingIdentity(ident); 2734 } 2735 } 2736 2737 @Override // Binder call 2738 public void wakeUp(long eventTime) { 2739 if (eventTime > SystemClock.uptimeMillis()) { 2740 throw new IllegalArgumentException("event time must not be in the future"); 2741 } 2742 2743 mContext.enforceCallingOrSelfPermission( 2744 android.Manifest.permission.DEVICE_POWER, null); 2745 2746 final long ident = Binder.clearCallingIdentity(); 2747 try { 2748 wakeUpInternal(eventTime); 2749 } finally { 2750 Binder.restoreCallingIdentity(ident); 2751 } 2752 } 2753 2754 @Override // Binder call 2755 public void goToSleep(long eventTime, int reason, int flags) { 2756 if (eventTime > SystemClock.uptimeMillis()) { 2757 throw new IllegalArgumentException("event time must not be in the future"); 2758 } 2759 2760 mContext.enforceCallingOrSelfPermission( 2761 android.Manifest.permission.DEVICE_POWER, null); 2762 2763 final long ident = Binder.clearCallingIdentity(); 2764 try { 2765 goToSleepInternal(eventTime, reason, flags); 2766 } finally { 2767 Binder.restoreCallingIdentity(ident); 2768 } 2769 } 2770 2771 @Override // Binder call 2772 public void nap(long eventTime) { 2773 if (eventTime > SystemClock.uptimeMillis()) { 2774 throw new IllegalArgumentException("event time must not be in the future"); 2775 } 2776 2777 mContext.enforceCallingOrSelfPermission( 2778 android.Manifest.permission.DEVICE_POWER, null); 2779 2780 final long ident = Binder.clearCallingIdentity(); 2781 try { 2782 napInternal(eventTime); 2783 } finally { 2784 Binder.restoreCallingIdentity(ident); 2785 } 2786 } 2787 2788 @Override // Binder call 2789 public boolean isInteractive() { 2790 final long ident = Binder.clearCallingIdentity(); 2791 try { 2792 return isInteractiveInternal(); 2793 } finally { 2794 Binder.restoreCallingIdentity(ident); 2795 } 2796 } 2797 2798 @Override // Binder call 2799 public boolean isPowerSaveMode() { 2800 final long ident = Binder.clearCallingIdentity(); 2801 try { 2802 return isLowPowerModeInternal(); 2803 } finally { 2804 Binder.restoreCallingIdentity(ident); 2805 } 2806 } 2807 2808 /** 2809 * Reboots the device. 2810 * 2811 * @param confirm If true, shows a reboot confirmation dialog. 2812 * @param reason The reason for the reboot, or null if none. 2813 * @param wait If true, this call waits for the reboot to complete and does not return. 2814 */ 2815 @Override // Binder call 2816 public void reboot(boolean confirm, String reason, boolean wait) { 2817 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2818 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2819 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2820 } 2821 2822 final long ident = Binder.clearCallingIdentity(); 2823 try { 2824 shutdownOrRebootInternal(false, confirm, reason, wait); 2825 } finally { 2826 Binder.restoreCallingIdentity(ident); 2827 } 2828 } 2829 2830 /** 2831 * Shuts down the device. 2832 * 2833 * @param confirm If true, shows a shutdown confirmation dialog. 2834 * @param wait If true, this call waits for the shutdown to complete and does not return. 2835 */ 2836 @Override // Binder call 2837 public void shutdown(boolean confirm, boolean wait) { 2838 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2839 2840 final long ident = Binder.clearCallingIdentity(); 2841 try { 2842 shutdownOrRebootInternal(true, confirm, null, wait); 2843 } finally { 2844 Binder.restoreCallingIdentity(ident); 2845 } 2846 } 2847 2848 /** 2849 * Crash the runtime (causing a complete restart of the Android framework). 2850 * Requires REBOOT permission. Mostly for testing. Should not return. 2851 */ 2852 @Override // Binder call 2853 public void crash(String message) { 2854 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2855 2856 final long ident = Binder.clearCallingIdentity(); 2857 try { 2858 crashInternal(message); 2859 } finally { 2860 Binder.restoreCallingIdentity(ident); 2861 } 2862 } 2863 2864 /** 2865 * Set the setting that determines whether the device stays on when plugged in. 2866 * The argument is a bit string, with each bit specifying a power source that, 2867 * when the device is connected to that source, causes the device to stay on. 2868 * See {@link android.os.BatteryManager} for the list of power sources that 2869 * can be specified. Current values include 2870 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2871 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2872 * 2873 * Used by "adb shell svc power stayon ..." 2874 * 2875 * @param val an {@code int} containing the bits that specify which power sources 2876 * should cause the device to stay on. 2877 */ 2878 @Override // Binder call 2879 public void setStayOnSetting(int val) { 2880 mContext.enforceCallingOrSelfPermission( 2881 android.Manifest.permission.WRITE_SETTINGS, null); 2882 2883 final long ident = Binder.clearCallingIdentity(); 2884 try { 2885 setStayOnSettingInternal(val); 2886 } finally { 2887 Binder.restoreCallingIdentity(ident); 2888 } 2889 } 2890 2891 /** 2892 * Used by device administration to set the maximum screen off timeout. 2893 * 2894 * This method must only be called by the device administration policy manager. 2895 */ 2896 @Override // Binder call 2897 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2898 final long ident = Binder.clearCallingIdentity(); 2899 try { 2900 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2901 } finally { 2902 Binder.restoreCallingIdentity(ident); 2903 } 2904 } 2905 2906 /** 2907 * Used by the settings application and brightness control widgets to 2908 * temporarily override the current screen brightness setting so that the 2909 * user can observe the effect of an intended settings change without applying 2910 * it immediately. 2911 * 2912 * The override will be canceled when the setting value is next updated. 2913 * 2914 * @param brightness The overridden brightness. 2915 * 2916 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2917 */ 2918 @Override // Binder call 2919 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2920 mContext.enforceCallingOrSelfPermission( 2921 android.Manifest.permission.DEVICE_POWER, null); 2922 2923 final long ident = Binder.clearCallingIdentity(); 2924 try { 2925 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2926 } finally { 2927 Binder.restoreCallingIdentity(ident); 2928 } 2929 } 2930 2931 /** 2932 * Used by the settings application and brightness control widgets to 2933 * temporarily override the current screen auto-brightness adjustment setting so that the 2934 * user can observe the effect of an intended settings change without applying 2935 * it immediately. 2936 * 2937 * The override will be canceled when the setting value is next updated. 2938 * 2939 * @param adj The overridden brightness, or Float.NaN to disable the override. 2940 * 2941 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2942 */ 2943 @Override // Binder call 2944 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2945 mContext.enforceCallingOrSelfPermission( 2946 android.Manifest.permission.DEVICE_POWER, null); 2947 2948 final long ident = Binder.clearCallingIdentity(); 2949 try { 2950 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2951 } finally { 2952 Binder.restoreCallingIdentity(ident); 2953 } 2954 } 2955 2956 /** 2957 * Used by the phone application to make the attention LED flash when ringing. 2958 */ 2959 @Override // Binder call 2960 public void setAttentionLight(boolean on, int color) { 2961 mContext.enforceCallingOrSelfPermission( 2962 android.Manifest.permission.DEVICE_POWER, null); 2963 2964 final long ident = Binder.clearCallingIdentity(); 2965 try { 2966 setAttentionLightInternal(on, color); 2967 } finally { 2968 Binder.restoreCallingIdentity(ident); 2969 } 2970 } 2971 2972 @Override // Binder call 2973 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2974 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2975 != PackageManager.PERMISSION_GRANTED) { 2976 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2977 + Binder.getCallingPid() 2978 + ", uid=" + Binder.getCallingUid()); 2979 return; 2980 } 2981 2982 final long ident = Binder.clearCallingIdentity(); 2983 try { 2984 dumpInternal(pw); 2985 } finally { 2986 Binder.restoreCallingIdentity(ident); 2987 } 2988 } 2989 } 2990 2991 private final class LocalService extends PowerManagerInternal { 2992 /** 2993 * Used by the window manager to override the screen brightness based on the 2994 * current foreground activity. 2995 * 2996 * This method must only be called by the window manager. 2997 * 2998 * @param brightness The overridden brightness, or -1 to disable the override. 2999 */ 3000 @Override 3001 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 3002 mContext.enforceCallingOrSelfPermission( 3003 android.Manifest.permission.DEVICE_POWER, null); 3004 3005 final long ident = Binder.clearCallingIdentity(); 3006 try { 3007 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 3008 } finally { 3009 Binder.restoreCallingIdentity(ident); 3010 } 3011 } 3012 3013 /** 3014 * Used by the window manager to override the button brightness based on the 3015 * current foreground activity. 3016 * 3017 * This method must only be called by the window manager. 3018 * 3019 * @param brightness The overridden brightness, or -1 to disable the override. 3020 */ 3021 @Override 3022 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 3023 // Do nothing. 3024 // Button lights are not currently supported in the new implementation. 3025 mContext.enforceCallingOrSelfPermission( 3026 android.Manifest.permission.DEVICE_POWER, null); 3027 } 3028 3029 /** 3030 * Used by the window manager to override the user activity timeout based on the 3031 * current foreground activity. It can only be used to make the timeout shorter 3032 * than usual, not longer. 3033 * 3034 * This method must only be called by the window manager. 3035 * 3036 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 3037 */ 3038 @Override 3039 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3040 mContext.enforceCallingOrSelfPermission( 3041 android.Manifest.permission.DEVICE_POWER, null); 3042 3043 final long ident = Binder.clearCallingIdentity(); 3044 try { 3045 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3046 } finally { 3047 Binder.restoreCallingIdentity(ident); 3048 } 3049 } 3050 3051 @Override 3052 public boolean getLowPowerModeEnabled() { 3053 synchronized (mLock) { 3054 return mLowPowerModeEnabled; 3055 } 3056 } 3057 3058 @Override 3059 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3060 synchronized (mLock) { 3061 mLowPowerModeListeners.add(listener); 3062 } 3063 } 3064 3065 @Override 3066 public void setPolicy(WindowManagerPolicy policy) { 3067 PowerManagerService.this.setPolicy(policy); 3068 } 3069 } 3070} 3071