PowerManagerService.java revision a1f1a3c573acd91024fda0ceb3b921c73b186963
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.server.BatteryService; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.lights.Light; 26import com.android.server.lights.LightsManager; 27import com.android.server.twilight.TwilightManager; 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.net.Uri; 43import android.os.BatteryManager; 44import android.os.Binder; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.IPowerManager; 48import android.os.Looper; 49import android.os.Message; 50import android.os.PowerManager; 51import android.os.PowerManagerInternal; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.SystemClock; 55import android.os.SystemProperties; 56import android.os.SystemService; 57import android.os.UserHandle; 58import android.os.WorkSource; 59import android.provider.Settings; 60import android.service.dreams.DreamManagerInternal; 61import android.util.EventLog; 62import android.util.Log; 63import android.util.Slog; 64import android.util.TimeUtils; 65import android.view.WindowManagerPolicy; 66 67import java.io.FileDescriptor; 68import java.io.PrintWriter; 69import java.util.ArrayList; 70 71import libcore.util.Objects; 72 73/** 74 * The power manager service is responsible for coordinating power management 75 * functions on the device. 76 */ 77public final class PowerManagerService extends com.android.server.SystemService 78 implements Watchdog.Monitor { 79 private static final String TAG = "PowerManagerService"; 80 81 private static final boolean DEBUG = false; 82 private static final boolean DEBUG_SPEW = DEBUG && true; 83 84 // Message: Sent when a user activity timeout occurs to update the power state. 85 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 86 // Message: Sent when the device enters or exits a dreaming or dozing state. 87 private static final int MSG_SANDMAN = 2; 88 // Message: Sent when the screen on blocker is released. 89 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 90 // Message: Sent to poll whether the boot animation has terminated. 91 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 92 93 // Dirty bit: mWakeLocks changed 94 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 95 // Dirty bit: mWakefulness changed 96 private static final int DIRTY_WAKEFULNESS = 1 << 1; 97 // Dirty bit: user activity was poked or may have timed out 98 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 99 // Dirty bit: actual display power state was updated asynchronously 100 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 101 // Dirty bit: mBootCompleted changed 102 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 103 // Dirty bit: settings changed 104 private static final int DIRTY_SETTINGS = 1 << 5; 105 // Dirty bit: mIsPowered changed 106 private static final int DIRTY_IS_POWERED = 1 << 6; 107 // Dirty bit: mStayOn changed 108 private static final int DIRTY_STAY_ON = 1 << 7; 109 // Dirty bit: battery state changed 110 private static final int DIRTY_BATTERY_STATE = 1 << 8; 111 // Dirty bit: proximity state changed 112 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 113 // Dirty bit: screen on blocker state became held or unheld 114 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 115 // Dirty bit: dock state changed 116 private static final int DIRTY_DOCK_STATE = 1 << 11; 117 118 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 119 // The screen should be off or in the process of being turned off by the display controller. 120 // The device typically passes through the dozing state first. 121 private static final int WAKEFULNESS_ASLEEP = 0; 122 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 123 // When the user activity timeout expires, the device may start dreaming or go to sleep. 124 private static final int WAKEFULNESS_AWAKE = 1; 125 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 126 // which ends the dream. The device goes to sleep when goToSleep() is called, when 127 // the dream ends or when unplugged. 128 // User activity may brighten the screen but does not end the dream. 129 private static final int WAKEFULNESS_DREAMING = 2; 130 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 131 // low-power "doze" dream to run which keeps the display on but lets the application 132 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 133 // The device fully goes to sleep if the dream cannot be started or ends on its own. 134 private static final int WAKEFULNESS_DOZING = 3; 135 136 // Summarizes the state of all active wakelocks. 137 private static final int WAKE_LOCK_CPU = 1 << 0; 138 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 139 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 140 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 141 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 142 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 143 private static final int WAKE_LOCK_DOZE = 1 << 6; 144 145 // Summarizes the user activity state. 146 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 147 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 148 149 // Default and minimum screen off timeout in milliseconds. 150 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 151 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 152 153 // The screen dim duration, in milliseconds. 154 // This is subtracted from the end of the screen off timeout so the 155 // minimum screen off timeout should be longer than this. 156 private static final int SCREEN_DIM_DURATION = 7 * 1000; 157 158 // The maximum screen dim time expressed as a ratio relative to the screen 159 // off timeout. If the screen off timeout is very short then we want the 160 // dim timeout to also be quite short so that most of the time is spent on. 161 // Otherwise the user won't get much screen on time before dimming occurs. 162 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 163 164 // The name of the boot animation service in init.rc. 165 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 166 167 // Poll interval in milliseconds for watching boot animation finished. 168 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 169 170 private final Context mContext; 171 private LightsManager mLightsManager; 172 private BatteryService mBatteryService; 173 private DisplayManagerInternal mDisplayManagerInternal; 174 private IBatteryStats mBatteryStats; 175 private IAppOpsService mAppOps; 176 private ServiceThread mHandlerThread; 177 private PowerManagerHandler mHandler; 178 private WindowManagerPolicy mPolicy; 179 private Notifier mNotifier; 180 private DisplayPowerController mDisplayPowerController; 181 private WirelessChargerDetector mWirelessChargerDetector; 182 private SettingsObserver mSettingsObserver; 183 private DreamManagerInternal mDreamManager; 184 private Light mAttentionLight; 185 186 private final Object mLock = new Object(); 187 188 // A bitfield that indicates what parts of the power state have 189 // changed and need to be recalculated. 190 private int mDirty; 191 192 // Indicates whether the device is awake or asleep or somewhere in between. 193 // This is distinct from the screen power state, which is managed separately. 194 private int mWakefulness; 195 196 // True if the sandman has just been summoned for the first time since entering the 197 // dreaming or dozing state. Indicates whether a new dream should begin. 198 private boolean mSandmanSummoned; 199 200 // True if MSG_SANDMAN has been scheduled. 201 private boolean mSandmanScheduled; 202 203 // Table of all suspend blockers. 204 // There should only be a few of these. 205 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 206 207 // Table of all wake locks acquired by applications. 208 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 209 210 // A bitfield that summarizes the state of all active wakelocks. 211 private int mWakeLockSummary; 212 213 // If true, instructs the display controller to wait for the proximity sensor to 214 // go negative before turning the screen on. 215 private boolean mRequestWaitForNegativeProximity; 216 217 // Timestamp of the last time the device was awoken or put to sleep. 218 private long mLastWakeTime; 219 private long mLastSleepTime; 220 221 // True if we need to send a wake up or go to sleep finished notification 222 // when the display is ready. 223 private boolean mSendWakeUpFinishedNotificationWhenReady; 224 private boolean mSendGoToSleepFinishedNotificationWhenReady; 225 226 // Timestamp of the last call to user activity. 227 private long mLastUserActivityTime; 228 private long mLastUserActivityTimeNoChangeLights; 229 230 // A bitfield that summarizes the effect of the user activity timer. 231 // A zero value indicates that the user activity timer has expired. 232 private int mUserActivitySummary; 233 234 // The desired display power state. The actual state may lag behind the 235 // requested because it is updated asynchronously by the display power controller. 236 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 237 238 // True if the display power state has been fully applied, which means the display 239 // is actually on or actually off or whatever was requested. 240 private boolean mDisplayReady; 241 242 // The suspend blocker used to keep the CPU alive when an application has acquired 243 // a wake lock. 244 private final SuspendBlocker mWakeLockSuspendBlocker; 245 246 // True if the wake lock suspend blocker has been acquired. 247 private boolean mHoldingWakeLockSuspendBlocker; 248 249 // The suspend blocker used to keep the CPU alive when the display is on, the 250 // display is getting ready or there is user activity (in which case the display 251 // must be on). 252 private final SuspendBlocker mDisplaySuspendBlocker; 253 254 // True if the display suspend blocker has been acquired. 255 private boolean mHoldingDisplaySuspendBlocker; 256 257 // The screen on blocker used to keep the screen from turning on while the lock 258 // screen is coming up. 259 private final ScreenOnBlockerImpl mScreenOnBlocker; 260 261 // The display blanker used to turn the screen on or off. 262 private final DisplayBlankerImpl mDisplayBlanker; 263 264 // True if systemReady() has been called. 265 private boolean mSystemReady; 266 267 // True if boot completed occurred. We keep the screen on until this happens. 268 private boolean mBootCompleted; 269 270 // True if auto-suspend mode is enabled. 271 // Refer to autosuspend.h. 272 private boolean mAutoSuspendModeEnabled; 273 274 // True if interactive mode is enabled. 275 // Refer to power.h. 276 private boolean mInteractiveModeEnabled; 277 278 // True if the device is plugged into a power source. 279 private boolean mIsPowered; 280 281 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 282 private int mPlugType; 283 284 // The current battery level percentage. 285 private int mBatteryLevel; 286 287 // The battery level percentage at the time the dream started. 288 // This is used to terminate a dream and go to sleep if the battery is 289 // draining faster than it is charging and the user activity timeout has expired. 290 private int mBatteryLevelWhenDreamStarted; 291 292 // The current dock state. 293 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 294 295 // True to decouple auto-suspend mode from the display state. 296 private boolean mDecoupleAutoSuspendModeFromDisplayConfig; 297 298 // True to decouple interactive mode from the display state. 299 private boolean mDecoupleInteractiveModeFromDisplayConfig; 300 301 // True if the device should wake up when plugged or unplugged. 302 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 303 304 // True if the device should suspend when the screen is off due to proximity. 305 private boolean mSuspendWhenScreenOffDueToProximityConfig; 306 307 // True if dreams are supported on this device. 308 private boolean mDreamsSupportedConfig; 309 310 // Default value for dreams enabled 311 private boolean mDreamsEnabledByDefaultConfig; 312 313 // Default value for dreams activate-on-sleep 314 private boolean mDreamsActivatedOnSleepByDefaultConfig; 315 316 // Default value for dreams activate-on-dock 317 private boolean mDreamsActivatedOnDockByDefaultConfig; 318 319 // True if dreams can run while not plugged in. 320 private boolean mDreamsEnabledOnBatteryConfig; 321 322 // Minimum battery level to allow dreaming when powered. 323 // Use -1 to disable this safety feature. 324 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 325 326 // Minimum battery level to allow dreaming when not powered. 327 // Use -1 to disable this safety feature. 328 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 329 330 // If the battery level drops by this percentage and the user activity timeout 331 // has expired, then assume the device is receiving insufficient current to charge 332 // effectively and terminate the dream. Use -1 to disable this safety feature. 333 private int mDreamsBatteryLevelDrainCutoffConfig; 334 335 // True if dreams are enabled by the user. 336 private boolean mDreamsEnabledSetting; 337 338 // True if dreams should be activated on sleep. 339 private boolean mDreamsActivateOnSleepSetting; 340 341 // True if dreams should be activated on dock. 342 private boolean mDreamsActivateOnDockSetting; 343 344 // The screen off timeout setting value in milliseconds. 345 private int mScreenOffTimeoutSetting; 346 347 // The maximum allowable screen off timeout according to the device 348 // administration policy. Overrides other settings. 349 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 350 351 // The stay on while plugged in setting. 352 // A bitfield of battery conditions under which to make the screen stay on. 353 private int mStayOnWhilePluggedInSetting; 354 355 // True if the device should stay on. 356 private boolean mStayOn; 357 358 // True if the proximity sensor reads a positive result. 359 private boolean mProximityPositive; 360 361 // Screen brightness setting limits. 362 private int mScreenBrightnessSettingMinimum; 363 private int mScreenBrightnessSettingMaximum; 364 private int mScreenBrightnessSettingDefault; 365 366 // The screen brightness setting, from 0 to 255. 367 // Use -1 if no value has been set. 368 private int mScreenBrightnessSetting; 369 370 // The screen auto-brightness adjustment setting, from -1 to 1. 371 // Use 0 if there is no adjustment. 372 private float mScreenAutoBrightnessAdjustmentSetting; 373 374 // The screen brightness mode. 375 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 376 private int mScreenBrightnessModeSetting; 377 378 // The screen brightness setting override from the window manager 379 // to allow the current foreground activity to override the brightness. 380 // Use -1 to disable. 381 private int mScreenBrightnessOverrideFromWindowManager = -1; 382 383 // The user activity timeout override from the window manager 384 // to allow the current foreground activity to override the user activity timeout. 385 // Use -1 to disable. 386 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 387 388 // The screen brightness setting override from the settings application 389 // to temporarily adjust the brightness until next updated, 390 // Use -1 to disable. 391 private int mTemporaryScreenBrightnessSettingOverride = -1; 392 393 // The screen brightness adjustment setting override from the settings 394 // application to temporarily adjust the auto-brightness adjustment factor 395 // until next updated, in the range -1..1. 396 // Use NaN to disable. 397 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 398 399 // Time when we last logged a warning about calling userActivity() without permission. 400 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 401 402 private native void nativeInit(); 403 404 private static native void nativeSetPowerState(boolean screenOn, boolean screenBright); 405 private static native void nativeAcquireSuspendBlocker(String name); 406 private static native void nativeReleaseSuspendBlocker(String name); 407 private static native void nativeSetInteractive(boolean enable); 408 private static native void nativeSetAutoSuspend(boolean enable); 409 410 public PowerManagerService(Context context) { 411 super(context); 412 mContext = context; 413 synchronized (mLock) { 414 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 415 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 416 mDisplaySuspendBlocker.acquire(); 417 mHoldingDisplaySuspendBlocker = true; 418 419 mScreenOnBlocker = new ScreenOnBlockerImpl(); 420 mDisplayBlanker = new DisplayBlankerImpl(); 421 mWakefulness = WAKEFULNESS_AWAKE; 422 } 423 424 nativeInit(); 425 nativeSetPowerState(true, true); 426 } 427 428 @Override 429 public void onStart() { 430 publishBinderService(Context.POWER_SERVICE, new BinderService()); 431 publishLocalService(PowerManagerInternal.class, new LocalService()); 432 } 433 434 /** 435 * Initialize the power manager. 436 * Must be called before any other functions within the power manager are called. 437 */ 438 public void init(LightsManager ls, 439 BatteryService bs, IBatteryStats bss, 440 IAppOpsService appOps) { 441 mLightsManager = ls; 442 mBatteryService = bs; 443 mBatteryStats = bss; 444 mAppOps = appOps; 445 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 446 mHandlerThread = new ServiceThread(TAG, 447 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 448 mHandlerThread.start(); 449 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 450 451 Watchdog.getInstance().addMonitor(this); 452 Watchdog.getInstance().addThread(mHandler); 453 454 // Forcibly turn the screen on at boot so that it is in a known power state. 455 // We do this in init() rather than in the constructor because setting the 456 // screen state requires a call into surface flinger which then needs to call back 457 // into the activity manager to check permissions. Unfortunately the 458 // activity manager is not running when the constructor is called, so we 459 // have to defer setting the screen state until this point. 460 mDisplayBlanker.unblankAllDisplays(); 461 } 462 463 void setPolicy(WindowManagerPolicy policy) { 464 synchronized (mLock) { 465 mPolicy = policy; 466 } 467 } 468 469 public void systemReady() { 470 synchronized (mLock) { 471 mSystemReady = true; 472 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 473 474 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 475 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 476 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 477 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 478 479 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 480 481 // The notifier runs on the system server's main looper so as not to interfere 482 // with the animations and other critical functions of the power manager. 483 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 484 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 485 mScreenOnBlocker, mPolicy); 486 487 // The display power controller runs on the power manager service's 488 // own handler thread to ensure timely operation. 489 mDisplayPowerController = new DisplayPowerController(mHandler.getLooper(), 490 mContext, mNotifier, mLightsManager, 491 LocalServices.getService(TwilightManager.class), sensorManager, 492 mDisplaySuspendBlocker, mDisplayBlanker, 493 mDisplayPowerControllerCallbacks, mHandler); 494 495 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 496 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 497 mHandler); 498 mSettingsObserver = new SettingsObserver(mHandler); 499 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 500 501 // Register for broadcasts from other components of the system. 502 IntentFilter filter = new IntentFilter(); 503 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 504 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 505 506 filter = new IntentFilter(); 507 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 508 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 509 510 filter = new IntentFilter(); 511 filter.addAction(Intent.ACTION_DREAMING_STARTED); 512 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 513 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 514 515 filter = new IntentFilter(); 516 filter.addAction(Intent.ACTION_USER_SWITCHED); 517 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 518 519 filter = new IntentFilter(); 520 filter.addAction(Intent.ACTION_DOCK_EVENT); 521 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 522 523 // Register for settings changes. 524 final ContentResolver resolver = mContext.getContentResolver(); 525 resolver.registerContentObserver(Settings.Secure.getUriFor( 526 Settings.Secure.SCREENSAVER_ENABLED), 527 false, mSettingsObserver, UserHandle.USER_ALL); 528 resolver.registerContentObserver(Settings.Secure.getUriFor( 529 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 530 false, mSettingsObserver, UserHandle.USER_ALL); 531 resolver.registerContentObserver(Settings.Secure.getUriFor( 532 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 533 false, mSettingsObserver, UserHandle.USER_ALL); 534 resolver.registerContentObserver(Settings.System.getUriFor( 535 Settings.System.SCREEN_OFF_TIMEOUT), 536 false, mSettingsObserver, UserHandle.USER_ALL); 537 resolver.registerContentObserver(Settings.Global.getUriFor( 538 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 539 false, mSettingsObserver, UserHandle.USER_ALL); 540 resolver.registerContentObserver(Settings.System.getUriFor( 541 Settings.System.SCREEN_BRIGHTNESS), 542 false, mSettingsObserver, UserHandle.USER_ALL); 543 resolver.registerContentObserver(Settings.System.getUriFor( 544 Settings.System.SCREEN_BRIGHTNESS_MODE), 545 false, mSettingsObserver, UserHandle.USER_ALL); 546 547 // Go. 548 readConfigurationLocked(); 549 updateSettingsLocked(); 550 mDirty |= DIRTY_BATTERY_STATE; 551 updatePowerStateLocked(); 552 } 553 } 554 555 private void readConfigurationLocked() { 556 final Resources resources = mContext.getResources(); 557 558 mDecoupleAutoSuspendModeFromDisplayConfig = resources.getBoolean( 559 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 560 mDecoupleInteractiveModeFromDisplayConfig = resources.getBoolean( 561 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 562 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 563 com.android.internal.R.bool.config_unplugTurnsOnScreen); 564 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 565 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 566 mDreamsSupportedConfig = resources.getBoolean( 567 com.android.internal.R.bool.config_dreamsSupported); 568 mDreamsEnabledByDefaultConfig = resources.getBoolean( 569 com.android.internal.R.bool.config_dreamsEnabledByDefault); 570 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 571 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 572 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 573 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 574 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 575 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 576 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 577 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 578 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 579 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 580 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 581 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 582 } 583 584 private void updateSettingsLocked() { 585 final ContentResolver resolver = mContext.getContentResolver(); 586 587 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 588 Settings.Secure.SCREENSAVER_ENABLED, 589 mDreamsEnabledByDefaultConfig ? 1 : 0, 590 UserHandle.USER_CURRENT) != 0); 591 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 592 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 593 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 594 UserHandle.USER_CURRENT) != 0); 595 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 596 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 597 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 598 UserHandle.USER_CURRENT) != 0); 599 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 600 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 601 UserHandle.USER_CURRENT); 602 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 603 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 604 605 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 606 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 607 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 608 UserHandle.USER_CURRENT); 609 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 610 mTemporaryScreenBrightnessSettingOverride = -1; 611 } 612 613 final float oldScreenAutoBrightnessAdjustmentSetting = 614 mScreenAutoBrightnessAdjustmentSetting; 615 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 616 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 617 UserHandle.USER_CURRENT); 618 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 619 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 620 } 621 622 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 623 Settings.System.SCREEN_BRIGHTNESS_MODE, 624 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 625 626 mDirty |= DIRTY_SETTINGS; 627 } 628 629 private void handleSettingsChangedLocked() { 630 updateSettingsLocked(); 631 updatePowerStateLocked(); 632 } 633 634 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 635 WorkSource ws, String historyTag, int uid, int pid) { 636 synchronized (mLock) { 637 if (DEBUG_SPEW) { 638 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 639 + ", flags=0x" + Integer.toHexString(flags) 640 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 641 } 642 643 WakeLock wakeLock; 644 int index = findWakeLockIndexLocked(lock); 645 if (index >= 0) { 646 wakeLock = mWakeLocks.get(index); 647 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 648 // Update existing wake lock. This shouldn't happen but is harmless. 649 notifyWakeLockReleasedLocked(wakeLock); 650 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 651 notifyWakeLockAcquiredLocked(wakeLock); 652 } 653 } else { 654 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 655 try { 656 lock.linkToDeath(wakeLock, 0); 657 } catch (RemoteException ex) { 658 throw new IllegalArgumentException("Wake lock is already dead."); 659 } 660 notifyWakeLockAcquiredLocked(wakeLock); 661 mWakeLocks.add(wakeLock); 662 } 663 664 applyWakeLockFlagsOnAcquireLocked(wakeLock); 665 mDirty |= DIRTY_WAKE_LOCKS; 666 updatePowerStateLocked(); 667 } 668 } 669 670 @SuppressWarnings("deprecation") 671 private static boolean isScreenLock(final WakeLock wakeLock) { 672 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 673 case PowerManager.FULL_WAKE_LOCK: 674 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 675 case PowerManager.SCREEN_DIM_WAKE_LOCK: 676 return true; 677 } 678 return false; 679 } 680 681 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 682 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 683 && isScreenLock(wakeLock)) { 684 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 685 } 686 } 687 688 private void releaseWakeLockInternal(IBinder lock, int flags) { 689 synchronized (mLock) { 690 int index = findWakeLockIndexLocked(lock); 691 if (index < 0) { 692 if (DEBUG_SPEW) { 693 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 694 + " [not found], flags=0x" + Integer.toHexString(flags)); 695 } 696 return; 697 } 698 699 WakeLock wakeLock = mWakeLocks.get(index); 700 if (DEBUG_SPEW) { 701 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 702 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 703 } 704 705 mWakeLocks.remove(index); 706 notifyWakeLockReleasedLocked(wakeLock); 707 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 708 709 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 710 mRequestWaitForNegativeProximity = true; 711 } 712 713 applyWakeLockFlagsOnReleaseLocked(wakeLock); 714 mDirty |= DIRTY_WAKE_LOCKS; 715 updatePowerStateLocked(); 716 } 717 } 718 719 private void handleWakeLockDeath(WakeLock wakeLock) { 720 synchronized (mLock) { 721 if (DEBUG_SPEW) { 722 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 723 + " [" + wakeLock.mTag + "]"); 724 } 725 726 int index = mWakeLocks.indexOf(wakeLock); 727 if (index < 0) { 728 return; 729 } 730 731 mWakeLocks.remove(index); 732 notifyWakeLockReleasedLocked(wakeLock); 733 734 applyWakeLockFlagsOnReleaseLocked(wakeLock); 735 mDirty |= DIRTY_WAKE_LOCKS; 736 updatePowerStateLocked(); 737 } 738 } 739 740 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 741 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 742 && isScreenLock(wakeLock)) { 743 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 744 PowerManager.USER_ACTIVITY_EVENT_OTHER, 745 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 746 wakeLock.mOwnerUid); 747 } 748 } 749 750 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws) { 751 synchronized (mLock) { 752 int index = findWakeLockIndexLocked(lock); 753 if (index < 0) { 754 if (DEBUG_SPEW) { 755 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 756 + " [not found], ws=" + ws); 757 } 758 throw new IllegalArgumentException("Wake lock not active"); 759 } 760 761 WakeLock wakeLock = mWakeLocks.get(index); 762 if (DEBUG_SPEW) { 763 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 764 + " [" + wakeLock.mTag + "], ws=" + ws); 765 } 766 767 if (!wakeLock.hasSameWorkSource(ws)) { 768 notifyWakeLockReleasedLocked(wakeLock); 769 wakeLock.updateWorkSource(ws); 770 notifyWakeLockAcquiredLocked(wakeLock); 771 } 772 } 773 } 774 775 private int findWakeLockIndexLocked(IBinder lock) { 776 final int count = mWakeLocks.size(); 777 for (int i = 0; i < count; i++) { 778 if (mWakeLocks.get(i).mLock == lock) { 779 return i; 780 } 781 } 782 return -1; 783 } 784 785 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 786 if (mSystemReady) { 787 wakeLock.mNotifiedAcquired = true; 788 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 789 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 790 wakeLock.mHistoryTag); 791 } 792 } 793 794 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 795 if (mSystemReady && wakeLock.mNotifiedAcquired) { 796 wakeLock.mNotifiedAcquired = false; 797 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 798 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 799 } 800 } 801 802 @SuppressWarnings("deprecation") 803 private boolean isWakeLockLevelSupportedInternal(int level) { 804 synchronized (mLock) { 805 switch (level) { 806 case PowerManager.PARTIAL_WAKE_LOCK: 807 case PowerManager.SCREEN_DIM_WAKE_LOCK: 808 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 809 case PowerManager.FULL_WAKE_LOCK: 810 case PowerManager.DOZE_WAKE_LOCK: 811 return true; 812 813 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 814 return mSystemReady && mDisplayPowerController.isProximitySensorAvailable(); 815 816 default: 817 return false; 818 } 819 } 820 } 821 822 // Called from native code. 823 private void userActivityFromNative(long eventTime, int event, int flags) { 824 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 825 } 826 827 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 828 synchronized (mLock) { 829 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 830 updatePowerStateLocked(); 831 } 832 } 833 } 834 835 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 836 if (DEBUG_SPEW) { 837 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 838 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 839 + ", uid=" + uid); 840 } 841 842 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 843 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 844 || !mBootCompleted || !mSystemReady) { 845 return false; 846 } 847 848 mNotifier.onUserActivity(event, uid); 849 850 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 851 if (eventTime > mLastUserActivityTimeNoChangeLights 852 && eventTime > mLastUserActivityTime) { 853 mLastUserActivityTimeNoChangeLights = eventTime; 854 mDirty |= DIRTY_USER_ACTIVITY; 855 return true; 856 } 857 } else { 858 if (eventTime > mLastUserActivityTime) { 859 mLastUserActivityTime = eventTime; 860 mDirty |= DIRTY_USER_ACTIVITY; 861 return true; 862 } 863 } 864 return false; 865 } 866 867 // Called from native code. 868 private void wakeUpFromNative(long eventTime) { 869 wakeUpInternal(eventTime); 870 } 871 872 private void wakeUpInternal(long eventTime) { 873 synchronized (mLock) { 874 if (wakeUpNoUpdateLocked(eventTime)) { 875 updatePowerStateLocked(); 876 } 877 } 878 } 879 880 private boolean wakeUpNoUpdateLocked(long eventTime) { 881 if (DEBUG_SPEW) { 882 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 883 } 884 885 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 886 || !mBootCompleted || !mSystemReady) { 887 return false; 888 } 889 890 switch (mWakefulness) { 891 case WAKEFULNESS_ASLEEP: 892 Slog.i(TAG, "Waking up from sleep..."); 893 break; 894 case WAKEFULNESS_DREAMING: 895 Slog.i(TAG, "Waking up from dream..."); 896 break; 897 case WAKEFULNESS_DOZING: 898 Slog.i(TAG, "Waking up from dozing..."); 899 break; 900 } 901 902 if (mWakefulness != WAKEFULNESS_DREAMING) { 903 sendPendingNotificationsLocked(); 904 mNotifier.onWakeUpStarted(); 905 mSendWakeUpFinishedNotificationWhenReady = true; 906 } 907 908 mLastWakeTime = eventTime; 909 mWakefulness = WAKEFULNESS_AWAKE; 910 mDirty |= DIRTY_WAKEFULNESS; 911 912 userActivityNoUpdateLocked( 913 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 914 return true; 915 } 916 917 // Called from native code. 918 private void goToSleepFromNative(long eventTime, int reason) { 919 goToSleepInternal(eventTime, reason); 920 } 921 922 private void goToSleepInternal(long eventTime, int reason) { 923 synchronized (mLock) { 924 if (goToSleepNoUpdateLocked(eventTime, reason)) { 925 updatePowerStateLocked(); 926 } 927 } 928 } 929 930 // This method is called goToSleep for historical reasons but we actually start 931 // dozing before really going to sleep. 932 @SuppressWarnings("deprecation") 933 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 934 if (DEBUG_SPEW) { 935 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 936 } 937 938 if (eventTime < mLastWakeTime 939 || mWakefulness == WAKEFULNESS_ASLEEP 940 || mWakefulness == WAKEFULNESS_DOZING 941 || !mBootCompleted || !mSystemReady) { 942 return false; 943 } 944 945 switch (reason) { 946 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 947 Slog.i(TAG, "Going to sleep due to device administration policy..."); 948 break; 949 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 950 Slog.i(TAG, "Going to sleep due to screen timeout..."); 951 break; 952 default: 953 Slog.i(TAG, "Going to sleep by user request..."); 954 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 955 break; 956 } 957 958 sendPendingNotificationsLocked(); 959 mNotifier.onGoToSleepStarted(reason); 960 mSendGoToSleepFinishedNotificationWhenReady = true; 961 962 mLastSleepTime = eventTime; 963 mDirty |= DIRTY_WAKEFULNESS; 964 mWakefulness = WAKEFULNESS_DOZING; 965 mSandmanSummoned = true; 966 967 // Report the number of wake locks that will be cleared by going to sleep. 968 int numWakeLocksCleared = 0; 969 final int numWakeLocks = mWakeLocks.size(); 970 for (int i = 0; i < numWakeLocks; i++) { 971 final WakeLock wakeLock = mWakeLocks.get(i); 972 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 973 case PowerManager.FULL_WAKE_LOCK: 974 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 975 case PowerManager.SCREEN_DIM_WAKE_LOCK: 976 numWakeLocksCleared += 1; 977 break; 978 } 979 } 980 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 981 return true; 982 } 983 984 private void napInternal(long eventTime) { 985 synchronized (mLock) { 986 if (napNoUpdateLocked(eventTime)) { 987 updatePowerStateLocked(); 988 } 989 } 990 } 991 992 private boolean napNoUpdateLocked(long eventTime) { 993 if (DEBUG_SPEW) { 994 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 995 } 996 997 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 998 || !mBootCompleted || !mSystemReady) { 999 return false; 1000 } 1001 1002 Slog.i(TAG, "Nap time..."); 1003 1004 mDirty |= DIRTY_WAKEFULNESS; 1005 mWakefulness = WAKEFULNESS_DREAMING; 1006 mSandmanSummoned = true; 1007 return true; 1008 } 1009 1010 // Done dozing, drop everything and go to sleep. 1011 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1012 if (DEBUG_SPEW) { 1013 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1014 } 1015 1016 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1017 || !mBootCompleted || !mSystemReady) { 1018 return false; 1019 } 1020 1021 Slog.i(TAG, "Sleeping..."); 1022 1023 mDirty |= DIRTY_WAKEFULNESS; 1024 mWakefulness = WAKEFULNESS_ASLEEP; 1025 return true; 1026 } 1027 1028 /** 1029 * Updates the global power state based on dirty bits recorded in mDirty. 1030 * 1031 * This is the main function that performs power state transitions. 1032 * We centralize them here so that we can recompute the power state completely 1033 * each time something important changes, and ensure that we do it the same 1034 * way each time. The point is to gather all of the transition logic here. 1035 */ 1036 private void updatePowerStateLocked() { 1037 if (!mSystemReady || mDirty == 0) { 1038 return; 1039 } 1040 1041 // Phase 0: Basic state updates. 1042 updateIsPoweredLocked(mDirty); 1043 updateStayOnLocked(mDirty); 1044 1045 // Phase 1: Update wakefulness. 1046 // Loop because the wake lock and user activity computations are influenced 1047 // by changes in wakefulness. 1048 final long now = SystemClock.uptimeMillis(); 1049 int dirtyPhase2 = 0; 1050 for (;;) { 1051 int dirtyPhase1 = mDirty; 1052 dirtyPhase2 |= dirtyPhase1; 1053 mDirty = 0; 1054 1055 updateWakeLockSummaryLocked(dirtyPhase1); 1056 updateUserActivitySummaryLocked(now, dirtyPhase1); 1057 if (!updateWakefulnessLocked(dirtyPhase1)) { 1058 break; 1059 } 1060 } 1061 1062 // Phase 2: Update dreams and display power state. 1063 updateDreamLocked(dirtyPhase2); 1064 updateDisplayPowerStateLocked(dirtyPhase2); 1065 1066 // Phase 3: Send notifications, if needed. 1067 if (mDisplayReady) { 1068 sendPendingNotificationsLocked(); 1069 } 1070 1071 // Phase 4: Update suspend blocker. 1072 // Because we might release the last suspend blocker here, we need to make sure 1073 // we finished everything else first! 1074 updateSuspendBlockerLocked(); 1075 } 1076 1077 private void sendPendingNotificationsLocked() { 1078 if (mSendWakeUpFinishedNotificationWhenReady) { 1079 mSendWakeUpFinishedNotificationWhenReady = false; 1080 mNotifier.onWakeUpFinished(); 1081 } 1082 if (mSendGoToSleepFinishedNotificationWhenReady) { 1083 mSendGoToSleepFinishedNotificationWhenReady = false; 1084 mNotifier.onGoToSleepFinished(); 1085 } 1086 } 1087 1088 /** 1089 * Updates the value of mIsPowered. 1090 * Sets DIRTY_IS_POWERED if a change occurred. 1091 */ 1092 private void updateIsPoweredLocked(int dirty) { 1093 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1094 final boolean wasPowered = mIsPowered; 1095 final int oldPlugType = mPlugType; 1096 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1097 mPlugType = mBatteryService.getPlugType(); 1098 mBatteryLevel = mBatteryService.getBatteryLevel(); 1099 1100 if (DEBUG_SPEW) { 1101 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1102 + ", mIsPowered=" + mIsPowered 1103 + ", oldPlugType=" + oldPlugType 1104 + ", mPlugType=" + mPlugType 1105 + ", mBatteryLevel=" + mBatteryLevel); 1106 } 1107 1108 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1109 mDirty |= DIRTY_IS_POWERED; 1110 1111 // Update wireless dock detection state. 1112 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1113 mIsPowered, mPlugType, mBatteryLevel); 1114 1115 // Treat plugging and unplugging the devices as a user activity. 1116 // Users find it disconcerting when they plug or unplug the device 1117 // and it shuts off right away. 1118 // Some devices also wake the device when plugged or unplugged because 1119 // they don't have a charging LED. 1120 final long now = SystemClock.uptimeMillis(); 1121 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1122 dockedOnWirelessCharger)) { 1123 wakeUpNoUpdateLocked(now); 1124 } 1125 userActivityNoUpdateLocked( 1126 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1127 1128 // Tell the notifier whether wireless charging has started so that 1129 // it can provide feedback to the user. 1130 if (dockedOnWirelessCharger) { 1131 mNotifier.onWirelessChargingStarted(); 1132 } 1133 } 1134 } 1135 } 1136 1137 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1138 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1139 // Don't wake when powered unless configured to do so. 1140 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1141 return false; 1142 } 1143 1144 // Don't wake when undocked from wireless charger. 1145 // See WirelessChargerDetector for justification. 1146 if (wasPowered && !mIsPowered 1147 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1148 return false; 1149 } 1150 1151 // Don't wake when docked on wireless charger unless we are certain of it. 1152 // See WirelessChargerDetector for justification. 1153 if (!wasPowered && mIsPowered 1154 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1155 && !dockedOnWirelessCharger) { 1156 return false; 1157 } 1158 1159 // If already dreaming and becoming powered, then don't wake. 1160 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1161 return false; 1162 } 1163 1164 // Otherwise wake up! 1165 return true; 1166 } 1167 1168 /** 1169 * Updates the value of mStayOn. 1170 * Sets DIRTY_STAY_ON if a change occurred. 1171 */ 1172 private void updateStayOnLocked(int dirty) { 1173 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1174 final boolean wasStayOn = mStayOn; 1175 if (mStayOnWhilePluggedInSetting != 0 1176 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1177 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1178 } else { 1179 mStayOn = false; 1180 } 1181 1182 if (mStayOn != wasStayOn) { 1183 mDirty |= DIRTY_STAY_ON; 1184 } 1185 } 1186 } 1187 1188 /** 1189 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1190 * Note that most wake-locks are ignored when the system is asleep. 1191 * 1192 * This function must have no other side-effects. 1193 */ 1194 @SuppressWarnings("deprecation") 1195 private void updateWakeLockSummaryLocked(int dirty) { 1196 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1197 mWakeLockSummary = 0; 1198 1199 final int numWakeLocks = mWakeLocks.size(); 1200 for (int i = 0; i < numWakeLocks; i++) { 1201 final WakeLock wakeLock = mWakeLocks.get(i); 1202 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1203 case PowerManager.PARTIAL_WAKE_LOCK: 1204 mWakeLockSummary |= WAKE_LOCK_CPU; 1205 break; 1206 case PowerManager.FULL_WAKE_LOCK: 1207 if (mWakefulness == WAKEFULNESS_AWAKE 1208 || mWakefulness == WAKEFULNESS_DREAMING) { 1209 mWakeLockSummary |= WAKE_LOCK_CPU 1210 | WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1211 } 1212 if (mWakefulness == WAKEFULNESS_AWAKE) { 1213 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1214 } 1215 break; 1216 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1217 if (mWakefulness == WAKEFULNESS_AWAKE 1218 || mWakefulness == WAKEFULNESS_DREAMING) { 1219 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_BRIGHT; 1220 } 1221 if (mWakefulness == WAKEFULNESS_AWAKE) { 1222 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1223 } 1224 break; 1225 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1226 if (mWakefulness == WAKEFULNESS_AWAKE 1227 || mWakefulness == WAKEFULNESS_DREAMING) { 1228 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_DIM; 1229 } 1230 if (mWakefulness == WAKEFULNESS_AWAKE) { 1231 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1232 } 1233 break; 1234 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1235 if (mWakefulness == WAKEFULNESS_AWAKE 1236 || mWakefulness == WAKEFULNESS_DREAMING 1237 || mWakefulness == WAKEFULNESS_DOZING) { 1238 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1239 } 1240 break; 1241 case PowerManager.DOZE_WAKE_LOCK: 1242 if (mWakefulness == WAKEFULNESS_DOZING) { 1243 mWakeLockSummary |= WAKE_LOCK_DOZE; 1244 } 1245 break; 1246 } 1247 } 1248 1249 if (DEBUG_SPEW) { 1250 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1251 + wakefulnessToString(mWakefulness) 1252 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1253 } 1254 } 1255 } 1256 1257 /** 1258 * Updates the value of mUserActivitySummary to summarize the user requested 1259 * state of the system such as whether the screen should be bright or dim. 1260 * Note that user activity is ignored when the system is asleep. 1261 * 1262 * This function must have no other side-effects. 1263 */ 1264 private void updateUserActivitySummaryLocked(long now, int dirty) { 1265 // Update the status of the user activity timeout timer. 1266 if ((dirty & (DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1267 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1268 1269 long nextTimeout = 0; 1270 if (mWakefulness == WAKEFULNESS_AWAKE 1271 || mWakefulness == WAKEFULNESS_DREAMING) { 1272 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1273 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1274 1275 mUserActivitySummary = 0; 1276 if (mLastUserActivityTime >= mLastWakeTime) { 1277 nextTimeout = mLastUserActivityTime 1278 + screenOffTimeout - screenDimDuration; 1279 if (now < nextTimeout) { 1280 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1281 } else { 1282 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1283 if (now < nextTimeout) { 1284 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1285 } 1286 } 1287 } 1288 if (mUserActivitySummary == 0 1289 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1290 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1291 if (now < nextTimeout 1292 && mDisplayPowerRequest.wantScreenOnNormal()) { 1293 mUserActivitySummary = mDisplayPowerRequest.screenState 1294 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1295 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1296 } 1297 } 1298 if (mUserActivitySummary != 0) { 1299 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1300 msg.setAsynchronous(true); 1301 mHandler.sendMessageAtTime(msg, nextTimeout); 1302 } 1303 } else { 1304 mUserActivitySummary = 0; 1305 } 1306 1307 if (DEBUG_SPEW) { 1308 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1309 + wakefulnessToString(mWakefulness) 1310 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1311 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1312 } 1313 } 1314 } 1315 1316 /** 1317 * Called when a user activity timeout has occurred. 1318 * Simply indicates that something about user activity has changed so that the new 1319 * state can be recomputed when the power state is updated. 1320 * 1321 * This function must have no other side-effects besides setting the dirty 1322 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1323 */ 1324 private void handleUserActivityTimeout() { // runs on handler thread 1325 synchronized (mLock) { 1326 if (DEBUG_SPEW) { 1327 Slog.d(TAG, "handleUserActivityTimeout"); 1328 } 1329 1330 mDirty |= DIRTY_USER_ACTIVITY; 1331 updatePowerStateLocked(); 1332 } 1333 } 1334 1335 private int getScreenOffTimeoutLocked() { 1336 int timeout = mScreenOffTimeoutSetting; 1337 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1338 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1339 } 1340 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1341 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1342 } 1343 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1344 } 1345 1346 private int getScreenDimDurationLocked(int screenOffTimeout) { 1347 return Math.min(SCREEN_DIM_DURATION, 1348 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1349 } 1350 1351 /** 1352 * Updates the wakefulness of the device. 1353 * 1354 * This is the function that decides whether the device should start dreaming 1355 * based on the current wake locks and user activity state. It may modify mDirty 1356 * if the wakefulness changes. 1357 * 1358 * Returns true if the wakefulness changed and we need to restart power state calculation. 1359 */ 1360 private boolean updateWakefulnessLocked(int dirty) { 1361 boolean changed = false; 1362 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1363 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1364 | DIRTY_DOCK_STATE)) != 0) { 1365 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1366 if (DEBUG_SPEW) { 1367 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1368 } 1369 final long time = SystemClock.uptimeMillis(); 1370 if (shouldNapAtBedTimeLocked()) { 1371 changed = napNoUpdateLocked(time); 1372 } else { 1373 changed = goToSleepNoUpdateLocked(time, 1374 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1375 } 1376 } 1377 } 1378 return changed; 1379 } 1380 1381 /** 1382 * Returns true if the device should automatically nap and start dreaming when the user 1383 * activity timeout has expired and it's bedtime. 1384 */ 1385 private boolean shouldNapAtBedTimeLocked() { 1386 return mDreamsActivateOnSleepSetting 1387 || (mDreamsActivateOnDockSetting 1388 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1389 } 1390 1391 /** 1392 * Returns true if the device should go to sleep now. 1393 * Also used when exiting a dream to determine whether we should go back 1394 * to being fully awake or else go to sleep for good. 1395 */ 1396 private boolean isItBedTimeYetLocked() { 1397 return mBootCompleted && !isBeingKeptAwakeLocked(); 1398 } 1399 1400 /** 1401 * Returns true if the device is being kept awake by a wake lock, user activity 1402 * or the stay on while powered setting. We also keep the phone awake when 1403 * the proximity sensor returns a positive result so that the device does not 1404 * lock while in a phone call. This function only controls whether the device 1405 * will go to sleep or dream which is independent of whether it will be allowed 1406 * to suspend. 1407 */ 1408 private boolean isBeingKeptAwakeLocked() { 1409 return mStayOn 1410 || mProximityPositive 1411 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1412 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1413 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1414 } 1415 1416 /** 1417 * Determines whether to post a message to the sandman to update the dream state. 1418 */ 1419 private void updateDreamLocked(int dirty) { 1420 if ((dirty & (DIRTY_WAKEFULNESS 1421 | DIRTY_USER_ACTIVITY 1422 | DIRTY_WAKE_LOCKS 1423 | DIRTY_BOOT_COMPLETED 1424 | DIRTY_SETTINGS 1425 | DIRTY_IS_POWERED 1426 | DIRTY_STAY_ON 1427 | DIRTY_PROXIMITY_POSITIVE 1428 | DIRTY_BATTERY_STATE)) != 0) { 1429 scheduleSandmanLocked(); 1430 } 1431 } 1432 1433 private void scheduleSandmanLocked() { 1434 if (!mSandmanScheduled) { 1435 mSandmanScheduled = true; 1436 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1437 msg.setAsynchronous(true); 1438 mHandler.sendMessage(msg); 1439 } 1440 } 1441 1442 /** 1443 * Called when the device enters or exits a dreaming or dozing state. 1444 * 1445 * We do this asynchronously because we must call out of the power manager to start 1446 * the dream and we don't want to hold our lock while doing so. There is a risk that 1447 * the device will wake or go to sleep in the meantime so we have to handle that case. 1448 */ 1449 private void handleSandman() { // runs on handler thread 1450 // Handle preconditions. 1451 final boolean startDreaming; 1452 final int wakefulness; 1453 synchronized (mLock) { 1454 mSandmanScheduled = false; 1455 wakefulness = mWakefulness; 1456 if (mSandmanSummoned) { 1457 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1458 || wakefulness == WAKEFULNESS_DOZING); 1459 mSandmanSummoned = false; 1460 } else { 1461 startDreaming = false; 1462 } 1463 } 1464 1465 // Start dreaming if needed. 1466 // We only control the dream on the handler thread, so we don't need to worry about 1467 // concurrent attempts to start or stop the dream. 1468 final boolean isDreaming; 1469 if (mDreamManager != null) { 1470 // Restart the dream whenever the sandman is summoned. 1471 if (startDreaming) { 1472 mDreamManager.stopDream(); 1473 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1474 } 1475 isDreaming = mDreamManager.isDreaming(); 1476 } else { 1477 isDreaming = false; 1478 } 1479 1480 // Update dream state. 1481 synchronized (mLock) { 1482 // Remember the initial battery level when the dream started. 1483 if (startDreaming && isDreaming) { 1484 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1485 if (wakefulness == WAKEFULNESS_DOZING) { 1486 Slog.i(TAG, "Dozing..."); 1487 } else { 1488 Slog.i(TAG, "Dreaming..."); 1489 } 1490 } 1491 1492 // If preconditions changed, wait for the next iteration to determine 1493 // whether the dream should continue (or be restarted). 1494 if (mSandmanSummoned || mWakefulness != wakefulness) { 1495 return; // wait for next cycle 1496 } 1497 1498 // Determine whether the dream should continue. 1499 if (wakefulness == WAKEFULNESS_DREAMING) { 1500 if (isDreaming && canDreamLocked()) { 1501 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1502 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1503 - mDreamsBatteryLevelDrainCutoffConfig 1504 && !isBeingKeptAwakeLocked()) { 1505 // If the user activity timeout expired and the battery appears 1506 // to be draining faster than it is charging then stop dreaming 1507 // and go to sleep. 1508 Slog.i(TAG, "Stopping dream because the battery appears to " 1509 + "be draining faster than it is charging. " 1510 + "Battery level when dream started: " 1511 + mBatteryLevelWhenDreamStarted + "%. " 1512 + "Battery level now: " + mBatteryLevel + "%."); 1513 } else { 1514 return; // continue dreaming 1515 } 1516 } 1517 1518 // Dream has ended or will be stopped. Update the power state. 1519 if (isItBedTimeYetLocked()) { 1520 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1521 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1522 updatePowerStateLocked(); 1523 } else { 1524 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1525 updatePowerStateLocked(); 1526 } 1527 } else if (wakefulness == WAKEFULNESS_DOZING) { 1528 if (isDreaming) { 1529 return; // continue dozing 1530 } 1531 1532 // Doze has ended or will be stopped. Update the power state. 1533 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1534 updatePowerStateLocked(); 1535 } 1536 } 1537 1538 // Stop dream. 1539 if (isDreaming) { 1540 mDreamManager.stopDream(); 1541 } 1542 } 1543 1544 /** 1545 * Returns true if the device is allowed to dream in its current state. 1546 * This function is not called when dozing. 1547 */ 1548 private boolean canDreamLocked() { 1549 if (mWakefulness != WAKEFULNESS_DREAMING 1550 || !mDreamsSupportedConfig 1551 || !mDreamsEnabledSetting 1552 || !mDisplayPowerRequest.wantScreenOnNormal() 1553 || !mBootCompleted) { 1554 return false; 1555 } 1556 if (!isBeingKeptAwakeLocked()) { 1557 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1558 return false; 1559 } 1560 if (!mIsPowered 1561 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1562 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1563 return false; 1564 } 1565 if (mIsPowered 1566 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1567 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1568 return false; 1569 } 1570 } 1571 return true; 1572 } 1573 1574 private void handleScreenOnBlockerReleased() { 1575 synchronized (mLock) { 1576 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1577 updatePowerStateLocked(); 1578 } 1579 } 1580 1581 /** 1582 * Updates the display power state asynchronously. 1583 * When the update is finished, mDisplayReady will be set to true. The display 1584 * controller posts a message to tell us when the actual display power state 1585 * has been updated so we come back here to double-check and finish up. 1586 * 1587 * This function recalculates the display power state each time. 1588 */ 1589 private void updateDisplayPowerStateLocked(int dirty) { 1590 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1591 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1592 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1593 final int newScreenState = getDesiredScreenPowerStateLocked(); 1594 if (newScreenState != mDisplayPowerRequest.screenState) { 1595 mDisplayPowerRequest.screenState = newScreenState; 1596 nativeSetPowerState( 1597 mDisplayPowerRequest.wantScreenOnNormal(), 1598 newScreenState == DisplayPowerRequest.SCREEN_STATE_BRIGHT); 1599 } 1600 1601 int screenBrightness = mScreenBrightnessSettingDefault; 1602 float screenAutoBrightnessAdjustment = 0.0f; 1603 boolean autoBrightness = (mScreenBrightnessModeSetting == 1604 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1605 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1606 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1607 autoBrightness = false; 1608 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1609 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1610 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1611 screenBrightness = mScreenBrightnessSetting; 1612 } 1613 if (autoBrightness) { 1614 screenBrightness = mScreenBrightnessSettingDefault; 1615 if (isValidAutoBrightnessAdjustment( 1616 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1617 screenAutoBrightnessAdjustment = 1618 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1619 } else if (isValidAutoBrightnessAdjustment( 1620 mScreenAutoBrightnessAdjustmentSetting)) { 1621 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1622 } 1623 } 1624 screenBrightness = Math.max(Math.min(screenBrightness, 1625 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1626 screenAutoBrightnessAdjustment = Math.max(Math.min( 1627 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1628 mDisplayPowerRequest.screenBrightness = screenBrightness; 1629 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1630 screenAutoBrightnessAdjustment; 1631 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1632 1633 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1634 1635 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1636 1637 mDisplayReady = mDisplayPowerController.requestPowerState(mDisplayPowerRequest, 1638 mRequestWaitForNegativeProximity); 1639 mRequestWaitForNegativeProximity = false; 1640 1641 if (DEBUG_SPEW) { 1642 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1643 + ", newScreenState=" + newScreenState 1644 + ", mWakefulness=" + mWakefulness 1645 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1646 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1647 + ", mBootCompleted=" + mBootCompleted); 1648 } 1649 } 1650 } 1651 1652 private static boolean isValidBrightness(int value) { 1653 return value >= 0 && value <= 255; 1654 } 1655 1656 private static boolean isValidAutoBrightnessAdjustment(float value) { 1657 // Handles NaN by always returning false. 1658 return value >= -1.0f && value <= 1.0f; 1659 } 1660 1661 private int getDesiredScreenPowerStateLocked() { 1662 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1663 return DisplayPowerRequest.SCREEN_STATE_OFF; 1664 } 1665 1666 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1667 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1668 } 1669 1670 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1671 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1672 || !mBootCompleted) { 1673 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1674 } 1675 1676 return DisplayPowerRequest.SCREEN_STATE_DIM; 1677 } 1678 1679 private final DisplayPowerController.Callbacks mDisplayPowerControllerCallbacks = 1680 new DisplayPowerController.Callbacks() { 1681 @Override 1682 public void onStateChanged() { 1683 synchronized (mLock) { 1684 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1685 updatePowerStateLocked(); 1686 } 1687 } 1688 1689 @Override 1690 public void onProximityPositive() { 1691 synchronized (mLock) { 1692 mProximityPositive = true; 1693 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1694 updatePowerStateLocked(); 1695 } 1696 } 1697 1698 @Override 1699 public void onProximityNegative() { 1700 synchronized (mLock) { 1701 mProximityPositive = false; 1702 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1703 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1704 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1705 updatePowerStateLocked(); 1706 } 1707 } 1708 }; 1709 1710 private boolean shouldUseProximitySensorLocked() { 1711 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1712 } 1713 1714 /** 1715 * Updates the suspend blocker that keeps the CPU alive. 1716 * 1717 * This function must have no other side-effects. 1718 */ 1719 private void updateSuspendBlockerLocked() { 1720 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1721 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1722 final boolean autoSuspend = !needDisplaySuspendBlocker; 1723 1724 // Disable auto-suspend if needed. 1725 if (!autoSuspend) { 1726 if (mDecoupleAutoSuspendModeFromDisplayConfig) { 1727 setAutoSuspendModeLocked(false); 1728 } 1729 if (mDecoupleInteractiveModeFromDisplayConfig) { 1730 setInteractiveModeLocked(true); 1731 } 1732 } 1733 1734 // First acquire suspend blockers if needed. 1735 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1736 mWakeLockSuspendBlocker.acquire(); 1737 mHoldingWakeLockSuspendBlocker = true; 1738 } 1739 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1740 mDisplaySuspendBlocker.acquire(); 1741 mHoldingDisplaySuspendBlocker = true; 1742 } 1743 1744 // Then release suspend blockers if needed. 1745 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1746 mWakeLockSuspendBlocker.release(); 1747 mHoldingWakeLockSuspendBlocker = false; 1748 } 1749 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1750 mDisplaySuspendBlocker.release(); 1751 mHoldingDisplaySuspendBlocker = false; 1752 } 1753 1754 // Enable auto-suspend if needed. 1755 if (autoSuspend) { 1756 if (mDecoupleInteractiveModeFromDisplayConfig) { 1757 setInteractiveModeLocked(false); 1758 } 1759 if (mDecoupleAutoSuspendModeFromDisplayConfig) { 1760 setAutoSuspendModeLocked(true); 1761 } 1762 } 1763 } 1764 1765 /** 1766 * Return true if we must keep a suspend blocker active on behalf of the display. 1767 * We do so if the screen is on or is in transition between states. 1768 */ 1769 private boolean needDisplaySuspendBlockerLocked() { 1770 if (!mDisplayReady) { 1771 return true; 1772 } 1773 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1774 // If we asked for the screen to be on but it is off due to the proximity 1775 // sensor then we may suspend but only if the configuration allows it. 1776 // On some hardware it may not be safe to suspend because the proximity 1777 // sensor may not be correctly configured as a wake-up source. 1778 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1779 || !mSuspendWhenScreenOffDueToProximityConfig) { 1780 return true; 1781 } 1782 } 1783 // Let the system suspend if the screen is off or dozing. 1784 return false; 1785 } 1786 1787 private void setAutoSuspendModeLocked(boolean enable) { 1788 if (enable != mAutoSuspendModeEnabled) { 1789 if (DEBUG) { 1790 Slog.d(TAG, "Setting auto-suspend mode to " + enable); 1791 } 1792 mAutoSuspendModeEnabled = enable; 1793 nativeSetAutoSuspend(enable); 1794 } 1795 } 1796 1797 private void setInteractiveModeLocked(boolean enable) { 1798 if (enable != mInteractiveModeEnabled) { 1799 if (DEBUG) { 1800 Slog.d(TAG, "Setting interactive mode to " + enable); 1801 } 1802 mInteractiveModeEnabled = enable; 1803 nativeSetInteractive(enable); 1804 } 1805 } 1806 1807 private boolean isScreenOnInternal() { 1808 synchronized (mLock) { 1809 return !mSystemReady 1810 || mDisplayPowerRequest.wantScreenOnNormal(); 1811 } 1812 } 1813 1814 private void handleBatteryStateChangedLocked() { 1815 mDirty |= DIRTY_BATTERY_STATE; 1816 updatePowerStateLocked(); 1817 } 1818 1819 private void startWatchingForBootAnimationFinished() { 1820 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1821 } 1822 1823 private void checkIfBootAnimationFinished() { 1824 if (DEBUG) { 1825 Slog.d(TAG, "Check if boot animation finished..."); 1826 } 1827 1828 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1829 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1830 BOOT_ANIMATION_POLL_INTERVAL); 1831 return; 1832 } 1833 1834 synchronized (mLock) { 1835 if (!mBootCompleted) { 1836 Slog.i(TAG, "Boot animation finished."); 1837 handleBootCompletedLocked(); 1838 } 1839 } 1840 } 1841 1842 private void handleBootCompletedLocked() { 1843 final long now = SystemClock.uptimeMillis(); 1844 mBootCompleted = true; 1845 mDirty |= DIRTY_BOOT_COMPLETED; 1846 userActivityNoUpdateLocked( 1847 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1848 updatePowerStateLocked(); 1849 } 1850 1851 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1852 final String reason, boolean wait) { 1853 if (mHandler == null || !mSystemReady) { 1854 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1855 } 1856 1857 Runnable runnable = new Runnable() { 1858 @Override 1859 public void run() { 1860 synchronized (this) { 1861 if (shutdown) { 1862 ShutdownThread.shutdown(mContext, confirm); 1863 } else { 1864 ShutdownThread.reboot(mContext, reason, confirm); 1865 } 1866 } 1867 } 1868 }; 1869 1870 // ShutdownThread must run on a looper capable of displaying the UI. 1871 Message msg = Message.obtain(mHandler, runnable); 1872 msg.setAsynchronous(true); 1873 mHandler.sendMessage(msg); 1874 1875 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1876 if (wait) { 1877 synchronized (runnable) { 1878 while (true) { 1879 try { 1880 runnable.wait(); 1881 } catch (InterruptedException e) { 1882 } 1883 } 1884 } 1885 } 1886 } 1887 1888 private void crashInternal(final String message) { 1889 Thread t = new Thread("PowerManagerService.crash()") { 1890 @Override 1891 public void run() { 1892 throw new RuntimeException(message); 1893 } 1894 }; 1895 try { 1896 t.start(); 1897 t.join(); 1898 } catch (InterruptedException e) { 1899 Log.wtf(TAG, e); 1900 } 1901 } 1902 1903 private void setStayOnSettingInternal(int val) { 1904 Settings.Global.putInt(mContext.getContentResolver(), 1905 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1906 } 1907 1908 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1909 synchronized (mLock) { 1910 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1911 mDirty |= DIRTY_SETTINGS; 1912 updatePowerStateLocked(); 1913 } 1914 } 1915 1916 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1917 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1918 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1919 } 1920 1921 private void setAttentionLightInternal(boolean on, int color) { 1922 Light light; 1923 synchronized (mLock) { 1924 if (!mSystemReady) { 1925 return; 1926 } 1927 light = mAttentionLight; 1928 } 1929 1930 // Control light outside of lock. 1931 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1932 } 1933 1934 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1935 synchronized (mLock) { 1936 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1937 mScreenBrightnessOverrideFromWindowManager = brightness; 1938 mDirty |= DIRTY_SETTINGS; 1939 updatePowerStateLocked(); 1940 } 1941 } 1942 } 1943 1944 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1945 synchronized (mLock) { 1946 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1947 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1948 mDirty |= DIRTY_SETTINGS; 1949 updatePowerStateLocked(); 1950 } 1951 } 1952 } 1953 1954 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 1955 synchronized (mLock) { 1956 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 1957 mTemporaryScreenBrightnessSettingOverride = brightness; 1958 mDirty |= DIRTY_SETTINGS; 1959 updatePowerStateLocked(); 1960 } 1961 } 1962 } 1963 1964 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 1965 synchronized (mLock) { 1966 // Note: This condition handles NaN because NaN is not equal to any other 1967 // value, including itself. 1968 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 1969 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 1970 mDirty |= DIRTY_SETTINGS; 1971 updatePowerStateLocked(); 1972 } 1973 } 1974 } 1975 1976 /** 1977 * Low-level function turn the device off immediately, without trying 1978 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 1979 */ 1980 public static void lowLevelShutdown() { 1981 SystemProperties.set("sys.powerctl", "shutdown"); 1982 } 1983 1984 /** 1985 * Low-level function to reboot the device. On success, this 1986 * function doesn't return. If more than 20 seconds passes from 1987 * the time a reboot is requested (120 seconds for reboot to 1988 * recovery), this method returns. 1989 * 1990 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 1991 */ 1992 public static void lowLevelReboot(String reason) { 1993 if (reason == null) { 1994 reason = ""; 1995 } 1996 long duration; 1997 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 1998 // If we are rebooting to go into recovery, instead of 1999 // setting sys.powerctl directly we'll start the 2000 // pre-recovery service which will do some preparation for 2001 // recovery and then reboot for us. 2002 // 2003 // This preparation can take more than 20 seconds if 2004 // there's a very large update package, so lengthen the 2005 // timeout. 2006 SystemProperties.set("ctl.start", "pre-recovery"); 2007 duration = 120 * 1000L; 2008 } else { 2009 SystemProperties.set("sys.powerctl", "reboot," + reason); 2010 duration = 20 * 1000L; 2011 } 2012 try { 2013 Thread.sleep(duration); 2014 } catch (InterruptedException e) { 2015 Thread.currentThread().interrupt(); 2016 } 2017 } 2018 2019 @Override // Watchdog.Monitor implementation 2020 public void monitor() { 2021 // Grab and release lock for watchdog monitor to detect deadlocks. 2022 synchronized (mLock) { 2023 } 2024 } 2025 2026 private void dumpInternal(PrintWriter pw) { 2027 pw.println("POWER MANAGER (dumpsys power)\n"); 2028 2029 final DisplayPowerController dpc; 2030 final WirelessChargerDetector wcd; 2031 synchronized (mLock) { 2032 pw.println("Power Manager State:"); 2033 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2034 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2035 pw.println(" mIsPowered=" + mIsPowered); 2036 pw.println(" mPlugType=" + mPlugType); 2037 pw.println(" mBatteryLevel=" + mBatteryLevel); 2038 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2039 pw.println(" mDockState=" + mDockState); 2040 pw.println(" mStayOn=" + mStayOn); 2041 pw.println(" mProximityPositive=" + mProximityPositive); 2042 pw.println(" mBootCompleted=" + mBootCompleted); 2043 pw.println(" mSystemReady=" + mSystemReady); 2044 pw.println(" mAutoSuspendModeEnabled=" + mAutoSuspendModeEnabled); 2045 pw.println(" mInteactiveModeEnabled=" + mInteractiveModeEnabled); 2046 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2047 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2048 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2049 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2050 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2051 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2052 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2053 pw.println(" mSendWakeUpFinishedNotificationWhenReady=" 2054 + mSendWakeUpFinishedNotificationWhenReady); 2055 pw.println(" mSendGoToSleepFinishedNotificationWhenReady=" 2056 + mSendGoToSleepFinishedNotificationWhenReady); 2057 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2058 pw.println(" mLastUserActivityTimeNoChangeLights=" 2059 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2060 pw.println(" mDisplayReady=" + mDisplayReady); 2061 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2062 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2063 2064 pw.println(); 2065 pw.println("Settings and Configuration:"); 2066 pw.println(" mDecoupleAutoSuspendModeFromDisplayConfig=" 2067 + mDecoupleAutoSuspendModeFromDisplayConfig); 2068 pw.println(" mDecoupleInteractiveModeFromDisplayConfig=" 2069 + mDecoupleInteractiveModeFromDisplayConfig); 2070 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2071 + mWakeUpWhenPluggedOrUnpluggedConfig); 2072 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2073 + mSuspendWhenScreenOffDueToProximityConfig); 2074 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2075 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2076 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2077 + mDreamsActivatedOnSleepByDefaultConfig); 2078 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2079 + mDreamsActivatedOnDockByDefaultConfig); 2080 pw.println(" mDreamsEnabledOnBatteryConfig=" 2081 + mDreamsEnabledOnBatteryConfig); 2082 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2083 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2084 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2085 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2086 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2087 + mDreamsBatteryLevelDrainCutoffConfig); 2088 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2089 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2090 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2091 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2092 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2093 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2094 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2095 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2096 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2097 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2098 + mScreenAutoBrightnessAdjustmentSetting); 2099 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2100 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2101 + mScreenBrightnessOverrideFromWindowManager); 2102 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2103 + mUserActivityTimeoutOverrideFromWindowManager); 2104 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2105 + mTemporaryScreenBrightnessSettingOverride); 2106 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2107 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2108 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2109 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2110 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2111 2112 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2113 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2114 pw.println(); 2115 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2116 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2117 2118 pw.println(); 2119 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2120 for (WakeLock wl : mWakeLocks) { 2121 pw.println(" " + wl); 2122 } 2123 2124 pw.println(); 2125 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2126 for (SuspendBlocker sb : mSuspendBlockers) { 2127 pw.println(" " + sb); 2128 } 2129 2130 pw.println(); 2131 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2132 2133 pw.println(); 2134 pw.println("Display Blanker: " + mDisplayBlanker); 2135 2136 dpc = mDisplayPowerController; 2137 wcd = mWirelessChargerDetector; 2138 } 2139 2140 if (dpc != null) { 2141 dpc.dump(pw); 2142 } 2143 2144 if (wcd != null) { 2145 wcd.dump(pw); 2146 } 2147 } 2148 2149 private SuspendBlocker createSuspendBlockerLocked(String name) { 2150 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2151 mSuspendBlockers.add(suspendBlocker); 2152 return suspendBlocker; 2153 } 2154 2155 private static String wakefulnessToString(int wakefulness) { 2156 switch (wakefulness) { 2157 case WAKEFULNESS_ASLEEP: 2158 return "Asleep"; 2159 case WAKEFULNESS_AWAKE: 2160 return "Awake"; 2161 case WAKEFULNESS_DREAMING: 2162 return "Dreaming"; 2163 case WAKEFULNESS_DOZING: 2164 return "Dozing"; 2165 default: 2166 return Integer.toString(wakefulness); 2167 } 2168 } 2169 2170 private static WorkSource copyWorkSource(WorkSource workSource) { 2171 return workSource != null ? new WorkSource(workSource) : null; 2172 } 2173 2174 private final class BatteryReceiver extends BroadcastReceiver { 2175 @Override 2176 public void onReceive(Context context, Intent intent) { 2177 synchronized (mLock) { 2178 handleBatteryStateChangedLocked(); 2179 } 2180 } 2181 } 2182 2183 private final class BootCompletedReceiver extends BroadcastReceiver { 2184 @Override 2185 public void onReceive(Context context, Intent intent) { 2186 // This is our early signal that the system thinks it has finished booting. 2187 // However, the boot animation may still be running for a few more seconds 2188 // since it is ultimately in charge of when it terminates. 2189 // Defer transitioning into the boot completed state until the animation exits. 2190 // We do this so that the screen does not start to dim prematurely before 2191 // the user has actually had a chance to interact with the device. 2192 startWatchingForBootAnimationFinished(); 2193 } 2194 } 2195 2196 private final class DreamReceiver extends BroadcastReceiver { 2197 @Override 2198 public void onReceive(Context context, Intent intent) { 2199 synchronized (mLock) { 2200 scheduleSandmanLocked(); 2201 } 2202 } 2203 } 2204 2205 private final class UserSwitchedReceiver extends BroadcastReceiver { 2206 @Override 2207 public void onReceive(Context context, Intent intent) { 2208 synchronized (mLock) { 2209 handleSettingsChangedLocked(); 2210 } 2211 } 2212 } 2213 2214 private final class DockReceiver extends BroadcastReceiver { 2215 @Override 2216 public void onReceive(Context context, Intent intent) { 2217 synchronized (mLock) { 2218 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2219 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2220 if (mDockState != dockState) { 2221 mDockState = dockState; 2222 mDirty |= DIRTY_DOCK_STATE; 2223 updatePowerStateLocked(); 2224 } 2225 } 2226 } 2227 } 2228 2229 private final class SettingsObserver extends ContentObserver { 2230 public SettingsObserver(Handler handler) { 2231 super(handler); 2232 } 2233 2234 @Override 2235 public void onChange(boolean selfChange, Uri uri) { 2236 synchronized (mLock) { 2237 handleSettingsChangedLocked(); 2238 } 2239 } 2240 } 2241 2242 /** 2243 * Handler for asynchronous operations performed by the power manager. 2244 */ 2245 private final class PowerManagerHandler extends Handler { 2246 public PowerManagerHandler(Looper looper) { 2247 super(looper, null, true /*async*/); 2248 } 2249 2250 @Override 2251 public void handleMessage(Message msg) { 2252 switch (msg.what) { 2253 case MSG_USER_ACTIVITY_TIMEOUT: 2254 handleUserActivityTimeout(); 2255 break; 2256 case MSG_SANDMAN: 2257 handleSandman(); 2258 break; 2259 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2260 handleScreenOnBlockerReleased(); 2261 break; 2262 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2263 checkIfBootAnimationFinished(); 2264 break; 2265 } 2266 } 2267 } 2268 2269 /** 2270 * Represents a wake lock that has been acquired by an application. 2271 */ 2272 private final class WakeLock implements IBinder.DeathRecipient { 2273 public final IBinder mLock; 2274 public int mFlags; 2275 public String mTag; 2276 public final String mPackageName; 2277 public WorkSource mWorkSource; 2278 public String mHistoryTag; 2279 public final int mOwnerUid; 2280 public final int mOwnerPid; 2281 public boolean mNotifiedAcquired; 2282 2283 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2284 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2285 mLock = lock; 2286 mFlags = flags; 2287 mTag = tag; 2288 mPackageName = packageName; 2289 mWorkSource = copyWorkSource(workSource); 2290 mHistoryTag = historyTag; 2291 mOwnerUid = ownerUid; 2292 mOwnerPid = ownerPid; 2293 } 2294 2295 @Override 2296 public void binderDied() { 2297 PowerManagerService.this.handleWakeLockDeath(this); 2298 } 2299 2300 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2301 int ownerUid, int ownerPid) { 2302 return mFlags == flags 2303 && mTag.equals(tag) 2304 && hasSameWorkSource(workSource) 2305 && mOwnerUid == ownerUid 2306 && mOwnerPid == ownerPid; 2307 } 2308 2309 public void updateProperties(int flags, String tag, String packageName, 2310 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2311 if (!mPackageName.equals(packageName)) { 2312 throw new IllegalStateException("Existing wake lock package name changed: " 2313 + mPackageName + " to " + packageName); 2314 } 2315 if (mOwnerUid != ownerUid) { 2316 throw new IllegalStateException("Existing wake lock uid changed: " 2317 + mOwnerUid + " to " + ownerUid); 2318 } 2319 if (mOwnerPid != ownerPid) { 2320 throw new IllegalStateException("Existing wake lock pid changed: " 2321 + mOwnerPid + " to " + ownerPid); 2322 } 2323 mFlags = flags; 2324 mTag = tag; 2325 updateWorkSource(workSource); 2326 mHistoryTag = historyTag; 2327 } 2328 2329 public boolean hasSameWorkSource(WorkSource workSource) { 2330 return Objects.equal(mWorkSource, workSource); 2331 } 2332 2333 public void updateWorkSource(WorkSource workSource) { 2334 mWorkSource = copyWorkSource(workSource); 2335 } 2336 2337 @Override 2338 public String toString() { 2339 return getLockLevelString() 2340 + " '" + mTag + "'" + getLockFlagsString() 2341 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2342 } 2343 2344 @SuppressWarnings("deprecation") 2345 private String getLockLevelString() { 2346 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2347 case PowerManager.FULL_WAKE_LOCK: 2348 return "FULL_WAKE_LOCK "; 2349 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2350 return "SCREEN_BRIGHT_WAKE_LOCK "; 2351 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2352 return "SCREEN_DIM_WAKE_LOCK "; 2353 case PowerManager.PARTIAL_WAKE_LOCK: 2354 return "PARTIAL_WAKE_LOCK "; 2355 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2356 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2357 case PowerManager.DOZE_WAKE_LOCK: 2358 return "DOZE_WAKE_LOCK "; 2359 default: 2360 return "??? "; 2361 } 2362 } 2363 2364 private String getLockFlagsString() { 2365 String result = ""; 2366 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2367 result += " ACQUIRE_CAUSES_WAKEUP"; 2368 } 2369 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2370 result += " ON_AFTER_RELEASE"; 2371 } 2372 return result; 2373 } 2374 } 2375 2376 private final class SuspendBlockerImpl implements SuspendBlocker { 2377 private final String mName; 2378 private int mReferenceCount; 2379 2380 public SuspendBlockerImpl(String name) { 2381 mName = name; 2382 } 2383 2384 @Override 2385 protected void finalize() throws Throwable { 2386 try { 2387 if (mReferenceCount != 0) { 2388 Log.wtf(TAG, "Suspend blocker \"" + mName 2389 + "\" was finalized without being released!"); 2390 mReferenceCount = 0; 2391 nativeReleaseSuspendBlocker(mName); 2392 } 2393 } finally { 2394 super.finalize(); 2395 } 2396 } 2397 2398 @Override 2399 public void acquire() { 2400 synchronized (this) { 2401 mReferenceCount += 1; 2402 if (mReferenceCount == 1) { 2403 if (DEBUG_SPEW) { 2404 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2405 } 2406 nativeAcquireSuspendBlocker(mName); 2407 } 2408 } 2409 } 2410 2411 @Override 2412 public void release() { 2413 synchronized (this) { 2414 mReferenceCount -= 1; 2415 if (mReferenceCount == 0) { 2416 if (DEBUG_SPEW) { 2417 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2418 } 2419 nativeReleaseSuspendBlocker(mName); 2420 } else if (mReferenceCount < 0) { 2421 Log.wtf(TAG, "Suspend blocker \"" + mName 2422 + "\" was released without being acquired!", new Throwable()); 2423 mReferenceCount = 0; 2424 } 2425 } 2426 } 2427 2428 @Override 2429 public String toString() { 2430 synchronized (this) { 2431 return mName + ": ref count=" + mReferenceCount; 2432 } 2433 } 2434 } 2435 2436 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2437 private int mNestCount; 2438 2439 public boolean isHeld() { 2440 synchronized (this) { 2441 return mNestCount != 0; 2442 } 2443 } 2444 2445 @Override 2446 public void acquire() { 2447 synchronized (this) { 2448 mNestCount += 1; 2449 if (DEBUG) { 2450 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2451 } 2452 } 2453 } 2454 2455 @Override 2456 public void release() { 2457 synchronized (this) { 2458 mNestCount -= 1; 2459 if (mNestCount < 0) { 2460 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2461 new Throwable()); 2462 mNestCount = 0; 2463 } 2464 if (mNestCount == 0) { 2465 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2466 } 2467 if (DEBUG) { 2468 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2469 } 2470 } 2471 } 2472 2473 @Override 2474 public String toString() { 2475 synchronized (this) { 2476 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2477 } 2478 } 2479 } 2480 2481 private final class DisplayBlankerImpl implements DisplayBlanker { 2482 private boolean mBlanked; 2483 2484 @Override 2485 public void blankAllDisplays() { 2486 synchronized (this) { 2487 mBlanked = true; 2488 mDisplayManagerInternal.blankAllDisplaysFromPowerManager(); 2489 if (!mDecoupleInteractiveModeFromDisplayConfig) { 2490 setInteractiveModeLocked(false); 2491 } 2492 if (!mDecoupleAutoSuspendModeFromDisplayConfig) { 2493 setAutoSuspendModeLocked(true); 2494 } 2495 } 2496 } 2497 2498 @Override 2499 public void unblankAllDisplays() { 2500 synchronized (this) { 2501 if (!mDecoupleAutoSuspendModeFromDisplayConfig) { 2502 setAutoSuspendModeLocked(false); 2503 } 2504 if (!mDecoupleInteractiveModeFromDisplayConfig) { 2505 setInteractiveModeLocked(true); 2506 } 2507 mDisplayManagerInternal.unblankAllDisplaysFromPowerManager(); 2508 mBlanked = false; 2509 } 2510 } 2511 2512 @Override 2513 public String toString() { 2514 synchronized (this) { 2515 return "blanked=" + mBlanked; 2516 } 2517 } 2518 } 2519 2520 private final class BinderService extends IPowerManager.Stub { 2521 @Override // Binder call 2522 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2523 String packageName, int uid) { 2524 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2525 } 2526 2527 @Override // Binder call 2528 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2529 WorkSource ws, String historyTag) { 2530 if (lock == null) { 2531 throw new IllegalArgumentException("lock must not be null"); 2532 } 2533 if (packageName == null) { 2534 throw new IllegalArgumentException("packageName must not be null"); 2535 } 2536 PowerManager.validateWakeLockParameters(flags, tag); 2537 2538 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2539 if (ws != null && ws.size() != 0) { 2540 mContext.enforceCallingOrSelfPermission( 2541 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2542 } else { 2543 ws = null; 2544 } 2545 2546 final int uid = Binder.getCallingUid(); 2547 final int pid = Binder.getCallingPid(); 2548 final long ident = Binder.clearCallingIdentity(); 2549 try { 2550 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2551 } finally { 2552 Binder.restoreCallingIdentity(ident); 2553 } 2554 } 2555 2556 @Override // Binder call 2557 public void releaseWakeLock(IBinder lock, int flags) { 2558 if (lock == null) { 2559 throw new IllegalArgumentException("lock must not be null"); 2560 } 2561 2562 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2563 2564 final long ident = Binder.clearCallingIdentity(); 2565 try { 2566 releaseWakeLockInternal(lock, flags); 2567 } finally { 2568 Binder.restoreCallingIdentity(ident); 2569 } 2570 } 2571 2572 @Override // Binder call 2573 public void updateWakeLockUids(IBinder lock, int[] uids) { 2574 WorkSource ws = null; 2575 2576 if (uids != null) { 2577 ws = new WorkSource(); 2578 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2579 // one at a time? 2580 for (int i = 0; i < uids.length; i++) { 2581 ws.add(uids[i]); 2582 } 2583 } 2584 updateWakeLockWorkSource(lock, ws); 2585 } 2586 2587 @Override // Binder call 2588 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws) { 2589 if (lock == null) { 2590 throw new IllegalArgumentException("lock must not be null"); 2591 } 2592 2593 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2594 if (ws != null && ws.size() != 0) { 2595 mContext.enforceCallingOrSelfPermission( 2596 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2597 } else { 2598 ws = null; 2599 } 2600 2601 final long ident = Binder.clearCallingIdentity(); 2602 try { 2603 updateWakeLockWorkSourceInternal(lock, ws); 2604 } finally { 2605 Binder.restoreCallingIdentity(ident); 2606 } 2607 } 2608 2609 @Override // Binder call 2610 public boolean isWakeLockLevelSupported(int level) { 2611 final long ident = Binder.clearCallingIdentity(); 2612 try { 2613 return isWakeLockLevelSupportedInternal(level); 2614 } finally { 2615 Binder.restoreCallingIdentity(ident); 2616 } 2617 } 2618 2619 @Override // Binder call 2620 public void userActivity(long eventTime, int event, int flags) { 2621 final long now = SystemClock.uptimeMillis(); 2622 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2623 != PackageManager.PERMISSION_GRANTED) { 2624 // Once upon a time applications could call userActivity(). 2625 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2626 // request instead of throwing a SecurityException so we don't break old apps. 2627 synchronized (mLock) { 2628 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2629 mLastWarningAboutUserActivityPermission = now; 2630 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2631 + "caller does not have DEVICE_POWER permission. " 2632 + "Please fix your app! " 2633 + " pid=" + Binder.getCallingPid() 2634 + " uid=" + Binder.getCallingUid()); 2635 } 2636 } 2637 return; 2638 } 2639 2640 if (eventTime > SystemClock.uptimeMillis()) { 2641 throw new IllegalArgumentException("event time must not be in the future"); 2642 } 2643 2644 final int uid = Binder.getCallingUid(); 2645 final long ident = Binder.clearCallingIdentity(); 2646 try { 2647 userActivityInternal(eventTime, event, flags, uid); 2648 } finally { 2649 Binder.restoreCallingIdentity(ident); 2650 } 2651 } 2652 2653 @Override // Binder call 2654 public void wakeUp(long eventTime) { 2655 if (eventTime > SystemClock.uptimeMillis()) { 2656 throw new IllegalArgumentException("event time must not be in the future"); 2657 } 2658 2659 mContext.enforceCallingOrSelfPermission( 2660 android.Manifest.permission.DEVICE_POWER, null); 2661 2662 final long ident = Binder.clearCallingIdentity(); 2663 try { 2664 wakeUpInternal(eventTime); 2665 } finally { 2666 Binder.restoreCallingIdentity(ident); 2667 } 2668 } 2669 2670 @Override // Binder call 2671 public void goToSleep(long eventTime, int reason) { 2672 if (eventTime > SystemClock.uptimeMillis()) { 2673 throw new IllegalArgumentException("event time must not be in the future"); 2674 } 2675 2676 mContext.enforceCallingOrSelfPermission( 2677 android.Manifest.permission.DEVICE_POWER, null); 2678 2679 final long ident = Binder.clearCallingIdentity(); 2680 try { 2681 goToSleepInternal(eventTime, reason); 2682 } finally { 2683 Binder.restoreCallingIdentity(ident); 2684 } 2685 } 2686 2687 @Override // Binder call 2688 public void nap(long eventTime) { 2689 if (eventTime > SystemClock.uptimeMillis()) { 2690 throw new IllegalArgumentException("event time must not be in the future"); 2691 } 2692 2693 mContext.enforceCallingOrSelfPermission( 2694 android.Manifest.permission.DEVICE_POWER, null); 2695 2696 final long ident = Binder.clearCallingIdentity(); 2697 try { 2698 napInternal(eventTime); 2699 } finally { 2700 Binder.restoreCallingIdentity(ident); 2701 } 2702 } 2703 2704 @Override // Binder call 2705 public boolean isScreenOn() { 2706 final long ident = Binder.clearCallingIdentity(); 2707 try { 2708 return isScreenOnInternal(); 2709 } finally { 2710 Binder.restoreCallingIdentity(ident); 2711 } 2712 } 2713 2714 /** 2715 * Reboots the device. 2716 * 2717 * @param confirm If true, shows a reboot confirmation dialog. 2718 * @param reason The reason for the reboot, or null if none. 2719 * @param wait If true, this call waits for the reboot to complete and does not return. 2720 */ 2721 @Override // Binder call 2722 public void reboot(boolean confirm, String reason, boolean wait) { 2723 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2724 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2725 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2726 } 2727 2728 final long ident = Binder.clearCallingIdentity(); 2729 try { 2730 shutdownOrRebootInternal(false, confirm, reason, wait); 2731 } finally { 2732 Binder.restoreCallingIdentity(ident); 2733 } 2734 } 2735 2736 /** 2737 * Shuts down the device. 2738 * 2739 * @param confirm If true, shows a shutdown confirmation dialog. 2740 * @param wait If true, this call waits for the shutdown to complete and does not return. 2741 */ 2742 @Override // Binder call 2743 public void shutdown(boolean confirm, boolean wait) { 2744 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2745 2746 final long ident = Binder.clearCallingIdentity(); 2747 try { 2748 shutdownOrRebootInternal(true, confirm, null, wait); 2749 } finally { 2750 Binder.restoreCallingIdentity(ident); 2751 } 2752 } 2753 2754 /** 2755 * Crash the runtime (causing a complete restart of the Android framework). 2756 * Requires REBOOT permission. Mostly for testing. Should not return. 2757 */ 2758 @Override // Binder call 2759 public void crash(String message) { 2760 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2761 2762 final long ident = Binder.clearCallingIdentity(); 2763 try { 2764 crashInternal(message); 2765 } finally { 2766 Binder.restoreCallingIdentity(ident); 2767 } 2768 } 2769 2770 /** 2771 * Set the setting that determines whether the device stays on when plugged in. 2772 * The argument is a bit string, with each bit specifying a power source that, 2773 * when the device is connected to that source, causes the device to stay on. 2774 * See {@link android.os.BatteryManager} for the list of power sources that 2775 * can be specified. Current values include 2776 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2777 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2778 * 2779 * Used by "adb shell svc power stayon ..." 2780 * 2781 * @param val an {@code int} containing the bits that specify which power sources 2782 * should cause the device to stay on. 2783 */ 2784 @Override // Binder call 2785 public void setStayOnSetting(int val) { 2786 mContext.enforceCallingOrSelfPermission( 2787 android.Manifest.permission.WRITE_SETTINGS, null); 2788 2789 final long ident = Binder.clearCallingIdentity(); 2790 try { 2791 setStayOnSettingInternal(val); 2792 } finally { 2793 Binder.restoreCallingIdentity(ident); 2794 } 2795 } 2796 2797 /** 2798 * Used by device administration to set the maximum screen off timeout. 2799 * 2800 * This method must only be called by the device administration policy manager. 2801 */ 2802 @Override // Binder call 2803 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2804 final long ident = Binder.clearCallingIdentity(); 2805 try { 2806 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2807 } finally { 2808 Binder.restoreCallingIdentity(ident); 2809 } 2810 } 2811 2812 /** 2813 * Used by the settings application and brightness control widgets to 2814 * temporarily override the current screen brightness setting so that the 2815 * user can observe the effect of an intended settings change without applying 2816 * it immediately. 2817 * 2818 * The override will be canceled when the setting value is next updated. 2819 * 2820 * @param brightness The overridden brightness. 2821 * 2822 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2823 */ 2824 @Override // Binder call 2825 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2826 mContext.enforceCallingOrSelfPermission( 2827 android.Manifest.permission.DEVICE_POWER, null); 2828 2829 final long ident = Binder.clearCallingIdentity(); 2830 try { 2831 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2832 } finally { 2833 Binder.restoreCallingIdentity(ident); 2834 } 2835 } 2836 2837 /** 2838 * Used by the settings application and brightness control widgets to 2839 * temporarily override the current screen auto-brightness adjustment setting so that the 2840 * user can observe the effect of an intended settings change without applying 2841 * it immediately. 2842 * 2843 * The override will be canceled when the setting value is next updated. 2844 * 2845 * @param adj The overridden brightness, or Float.NaN to disable the override. 2846 * 2847 * @see Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2848 */ 2849 @Override // Binder call 2850 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2851 mContext.enforceCallingOrSelfPermission( 2852 android.Manifest.permission.DEVICE_POWER, null); 2853 2854 final long ident = Binder.clearCallingIdentity(); 2855 try { 2856 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2857 } finally { 2858 Binder.restoreCallingIdentity(ident); 2859 } 2860 } 2861 2862 /** 2863 * Used by the phone application to make the attention LED flash when ringing. 2864 */ 2865 @Override // Binder call 2866 public void setAttentionLight(boolean on, int color) { 2867 mContext.enforceCallingOrSelfPermission( 2868 android.Manifest.permission.DEVICE_POWER, null); 2869 2870 final long ident = Binder.clearCallingIdentity(); 2871 try { 2872 setAttentionLightInternal(on, color); 2873 } finally { 2874 Binder.restoreCallingIdentity(ident); 2875 } 2876 } 2877 2878 @Override // Binder call 2879 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2880 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2881 != PackageManager.PERMISSION_GRANTED) { 2882 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2883 + Binder.getCallingPid() 2884 + ", uid=" + Binder.getCallingUid()); 2885 return; 2886 } 2887 2888 final long ident = Binder.clearCallingIdentity(); 2889 try { 2890 dumpInternal(pw); 2891 } finally { 2892 Binder.restoreCallingIdentity(ident); 2893 } 2894 } 2895 } 2896 2897 private final class LocalService extends PowerManagerInternal { 2898 /** 2899 * Used by the window manager to override the screen brightness based on the 2900 * current foreground activity. 2901 * 2902 * This method must only be called by the window manager. 2903 * 2904 * @param brightness The overridden brightness, or -1 to disable the override. 2905 */ 2906 @Override 2907 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2908 mContext.enforceCallingOrSelfPermission( 2909 android.Manifest.permission.DEVICE_POWER, null); 2910 2911 final long ident = Binder.clearCallingIdentity(); 2912 try { 2913 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2914 } finally { 2915 Binder.restoreCallingIdentity(ident); 2916 } 2917 } 2918 2919 /** 2920 * Used by the window manager to override the button brightness based on the 2921 * current foreground activity. 2922 * 2923 * This method must only be called by the window manager. 2924 * 2925 * @param brightness The overridden brightness, or -1 to disable the override. 2926 */ 2927 @Override 2928 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2929 // Do nothing. 2930 // Button lights are not currently supported in the new implementation. 2931 mContext.enforceCallingOrSelfPermission( 2932 android.Manifest.permission.DEVICE_POWER, null); 2933 } 2934 2935 /** 2936 * Used by the window manager to override the user activity timeout based on the 2937 * current foreground activity. It can only be used to make the timeout shorter 2938 * than usual, not longer. 2939 * 2940 * This method must only be called by the window manager. 2941 * 2942 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2943 */ 2944 @Override 2945 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2946 mContext.enforceCallingOrSelfPermission( 2947 android.Manifest.permission.DEVICE_POWER, null); 2948 2949 final long ident = Binder.clearCallingIdentity(); 2950 try { 2951 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2952 } finally { 2953 Binder.restoreCallingIdentity(ident); 2954 } 2955 } 2956 2957 @Override 2958 public void setPolicy(WindowManagerPolicy policy) { 2959 PowerManagerService.this.setPolicy(policy); 2960 } 2961 } 2962} 2963