PowerManagerService.java revision d862ebb6036a769cb3be371b396e9e33f89ee365
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.internal.os.BackgroundThread; 22import com.android.server.BatteryService; 23import com.android.server.EventLogTags; 24import com.android.server.LocalServices; 25import com.android.server.ServiceThread; 26import com.android.server.lights.Light; 27import com.android.server.lights.LightsManager; 28import com.android.server.Watchdog; 29 30import android.Manifest; 31import android.content.BroadcastReceiver; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.database.ContentObserver; 39import android.hardware.SensorManager; 40import android.hardware.SystemSensorManager; 41import android.hardware.display.DisplayManagerInternal; 42import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 43import android.net.Uri; 44import android.os.BatteryManager; 45import android.os.Binder; 46import android.os.Handler; 47import android.os.IBinder; 48import android.os.IPowerManager; 49import android.os.Looper; 50import android.os.Message; 51import android.os.PowerManager; 52import android.os.PowerManagerInternal; 53import android.os.Process; 54import android.os.RemoteException; 55import android.os.SystemClock; 56import android.os.SystemProperties; 57import android.os.SystemService; 58import android.os.UserHandle; 59import android.os.WorkSource; 60import android.provider.Settings; 61import android.service.dreams.DreamManagerInternal; 62import android.util.EventLog; 63import android.util.Log; 64import android.util.Slog; 65import android.util.TimeUtils; 66import android.view.Display; 67import android.view.WindowManagerPolicy; 68 69import java.io.FileDescriptor; 70import java.io.PrintWriter; 71import java.util.ArrayList; 72 73import libcore.util.Objects; 74 75/** 76 * The power manager service is responsible for coordinating power management 77 * functions on the device. 78 */ 79public final class PowerManagerService extends com.android.server.SystemService 80 implements Watchdog.Monitor { 81 private static final String TAG = "PowerManagerService"; 82 83 private static final boolean DEBUG = false; 84 private static final boolean DEBUG_SPEW = DEBUG && true; 85 86 // Message: Sent when a user activity timeout occurs to update the power state. 87 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 88 // Message: Sent when the device enters or exits a dreaming or dozing state. 89 private static final int MSG_SANDMAN = 2; 90 // Message: Sent when the screen on blocker is released. 91 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 92 // Message: Sent to poll whether the boot animation has terminated. 93 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 94 95 // Dirty bit: mWakeLocks changed 96 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 97 // Dirty bit: mWakefulness changed 98 private static final int DIRTY_WAKEFULNESS = 1 << 1; 99 // Dirty bit: user activity was poked or may have timed out 100 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 101 // Dirty bit: actual display power state was updated asynchronously 102 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 103 // Dirty bit: mBootCompleted changed 104 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 105 // Dirty bit: settings changed 106 private static final int DIRTY_SETTINGS = 1 << 5; 107 // Dirty bit: mIsPowered changed 108 private static final int DIRTY_IS_POWERED = 1 << 6; 109 // Dirty bit: mStayOn changed 110 private static final int DIRTY_STAY_ON = 1 << 7; 111 // Dirty bit: battery state changed 112 private static final int DIRTY_BATTERY_STATE = 1 << 8; 113 // Dirty bit: proximity state changed 114 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 115 // Dirty bit: screen on blocker state became held or unheld 116 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 117 // Dirty bit: dock state changed 118 private static final int DIRTY_DOCK_STATE = 1 << 11; 119 120 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 121 // The screen should be off or in the process of being turned off by the display controller. 122 // The device typically passes through the dozing state first. 123 private static final int WAKEFULNESS_ASLEEP = 0; 124 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 125 // When the user activity timeout expires, the device may start dreaming or go to sleep. 126 private static final int WAKEFULNESS_AWAKE = 1; 127 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 128 // which ends the dream. The device goes to sleep when goToSleep() is called, when 129 // the dream ends or when unplugged. 130 // User activity may brighten the screen but does not end the dream. 131 private static final int WAKEFULNESS_DREAMING = 2; 132 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 133 // low-power "doze" dream to run which keeps the display on but lets the application 134 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 135 // The device fully goes to sleep if the dream cannot be started or ends on its own. 136 private static final int WAKEFULNESS_DOZING = 3; 137 138 // Summarizes the state of all active wakelocks. 139 private static final int WAKE_LOCK_CPU = 1 << 0; 140 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 141 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 142 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 143 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 144 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 145 private static final int WAKE_LOCK_DOZE = 1 << 6; 146 147 // Summarizes the user activity state. 148 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 149 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 150 151 // Default timeout in milliseconds. This is only used until the settings 152 // provider populates the actual default value (R.integer.def_screen_off_timeout). 153 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 154 155 // The name of the boot animation service in init.rc. 156 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 157 158 // Poll interval in milliseconds for watching boot animation finished. 159 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 160 161 // Used to send the hint to the PowerHAL indicating transitions 162 // from and to the low power mode. 163 private static final int POWER_HINT_LOW_POWER_MODE = 5; 164 165 private final Context mContext; 166 private LightsManager mLightsManager; 167 private BatteryService mBatteryService; 168 private DisplayManagerInternal mDisplayManagerInternal; 169 private IBatteryStats mBatteryStats; 170 private IAppOpsService mAppOps; 171 private ServiceThread mHandlerThread; 172 private PowerManagerHandler mHandler; 173 private WindowManagerPolicy mPolicy; 174 private Notifier mNotifier; 175 private WirelessChargerDetector mWirelessChargerDetector; 176 private SettingsObserver mSettingsObserver; 177 private DreamManagerInternal mDreamManager; 178 private Light mAttentionLight; 179 180 private final Object mLock = new Object(); 181 182 // A bitfield that indicates what parts of the power state have 183 // changed and need to be recalculated. 184 private int mDirty; 185 186 // Indicates whether the device is awake or asleep or somewhere in between. 187 // This is distinct from the screen power state, which is managed separately. 188 private int mWakefulness; 189 190 // True if the sandman has just been summoned for the first time since entering the 191 // dreaming or dozing state. Indicates whether a new dream should begin. 192 private boolean mSandmanSummoned; 193 194 // True if MSG_SANDMAN has been scheduled. 195 private boolean mSandmanScheduled; 196 197 // Table of all suspend blockers. 198 // There should only be a few of these. 199 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 200 201 // Table of all wake locks acquired by applications. 202 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 203 204 // A bitfield that summarizes the state of all active wakelocks. 205 private int mWakeLockSummary; 206 207 // True if the device is in an interactive state. 208 private boolean mInteractive; 209 private boolean mInteractiveChanging; 210 211 // If true, instructs the display controller to wait for the proximity sensor to 212 // go negative before turning the screen on. 213 private boolean mRequestWaitForNegativeProximity; 214 215 // Timestamp of the last time the device was awoken or put to sleep. 216 private long mLastWakeTime; 217 private long mLastSleepTime; 218 219 // Timestamp of the last call to user activity. 220 private long mLastUserActivityTime; 221 private long mLastUserActivityTimeNoChangeLights; 222 223 // A bitfield that summarizes the effect of the user activity timer. 224 // A zero value indicates that the user activity timer has expired. 225 private int mUserActivitySummary; 226 227 // The desired display power state. The actual state may lag behind the 228 // requested because it is updated asynchronously by the display power controller. 229 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 230 231 // True if the display power state has been fully applied, which means the display 232 // is actually on or actually off or whatever was requested. 233 private boolean mDisplayReady; 234 235 // The suspend blocker used to keep the CPU alive when an application has acquired 236 // a wake lock. 237 private final SuspendBlocker mWakeLockSuspendBlocker; 238 239 // True if the wake lock suspend blocker has been acquired. 240 private boolean mHoldingWakeLockSuspendBlocker; 241 242 // The suspend blocker used to keep the CPU alive when the display is on, the 243 // display is getting ready or there is user activity (in which case the display 244 // must be on). 245 private final SuspendBlocker mDisplaySuspendBlocker; 246 247 // True if the display suspend blocker has been acquired. 248 private boolean mHoldingDisplaySuspendBlocker; 249 250 // The screen on blocker used to keep the screen from turning on while the lock 251 // screen is coming up. 252 private final ScreenOnBlockerImpl mScreenOnBlocker; 253 254 // True if systemReady() has been called. 255 private boolean mSystemReady; 256 257 // True if boot completed occurred. We keep the screen on until this happens. 258 private boolean mBootCompleted; 259 260 // True if auto-suspend mode is enabled. 261 // Refer to autosuspend.h. 262 private boolean mHalAutoSuspendModeEnabled; 263 264 // True if interactive mode is enabled. 265 // Refer to power.h. 266 private boolean mHalInteractiveModeEnabled; 267 268 // True if the device is plugged into a power source. 269 private boolean mIsPowered; 270 271 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 272 private int mPlugType; 273 274 // The current battery level percentage. 275 private int mBatteryLevel; 276 277 // The battery level percentage at the time the dream started. 278 // This is used to terminate a dream and go to sleep if the battery is 279 // draining faster than it is charging and the user activity timeout has expired. 280 private int mBatteryLevelWhenDreamStarted; 281 282 // The current dock state. 283 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 284 285 // True to decouple auto-suspend mode from the display state. 286 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 287 288 // True to decouple interactive mode from the display state. 289 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 290 291 // True if the device should wake up when plugged or unplugged. 292 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 293 294 // True if the device should suspend when the screen is off due to proximity. 295 private boolean mSuspendWhenScreenOffDueToProximityConfig; 296 297 // True if dreams are supported on this device. 298 private boolean mDreamsSupportedConfig; 299 300 // Default value for dreams enabled 301 private boolean mDreamsEnabledByDefaultConfig; 302 303 // Default value for dreams activate-on-sleep 304 private boolean mDreamsActivatedOnSleepByDefaultConfig; 305 306 // Default value for dreams activate-on-dock 307 private boolean mDreamsActivatedOnDockByDefaultConfig; 308 309 // True if dreams can run while not plugged in. 310 private boolean mDreamsEnabledOnBatteryConfig; 311 312 // Minimum battery level to allow dreaming when powered. 313 // Use -1 to disable this safety feature. 314 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 315 316 // Minimum battery level to allow dreaming when not powered. 317 // Use -1 to disable this safety feature. 318 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 319 320 // If the battery level drops by this percentage and the user activity timeout 321 // has expired, then assume the device is receiving insufficient current to charge 322 // effectively and terminate the dream. Use -1 to disable this safety feature. 323 private int mDreamsBatteryLevelDrainCutoffConfig; 324 325 // True if dreams are enabled by the user. 326 private boolean mDreamsEnabledSetting; 327 328 // True if dreams should be activated on sleep. 329 private boolean mDreamsActivateOnSleepSetting; 330 331 // True if dreams should be activated on dock. 332 private boolean mDreamsActivateOnDockSetting; 333 334 // The minimum screen off timeout, in milliseconds. 335 private int mMinimumScreenOffTimeoutConfig; 336 337 // The screen dim duration, in milliseconds. 338 // This is subtracted from the end of the screen off timeout so the 339 // minimum screen off timeout should be longer than this. 340 private int mMaximumScreenDimDurationConfig; 341 342 // The maximum screen dim time expressed as a ratio relative to the screen 343 // off timeout. If the screen off timeout is very short then we want the 344 // dim timeout to also be quite short so that most of the time is spent on. 345 // Otherwise the user won't get much screen on time before dimming occurs. 346 private float mMaximumScreenDimRatioConfig; 347 348 // The screen off timeout setting value in milliseconds. 349 private int mScreenOffTimeoutSetting; 350 351 // The maximum allowable screen off timeout according to the device 352 // administration policy. Overrides other settings. 353 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 354 355 // The stay on while plugged in setting. 356 // A bitfield of battery conditions under which to make the screen stay on. 357 private int mStayOnWhilePluggedInSetting; 358 359 // True if the device should stay on. 360 private boolean mStayOn; 361 362 // True if the proximity sensor reads a positive result. 363 private boolean mProximityPositive; 364 365 // Screen brightness setting limits. 366 private int mScreenBrightnessSettingMinimum; 367 private int mScreenBrightnessSettingMaximum; 368 private int mScreenBrightnessSettingDefault; 369 370 // The screen brightness setting, from 0 to 255. 371 // Use -1 if no value has been set. 372 private int mScreenBrightnessSetting; 373 374 // The screen auto-brightness adjustment setting, from -1 to 1. 375 // Use 0 if there is no adjustment. 376 private float mScreenAutoBrightnessAdjustmentSetting; 377 378 // The screen brightness mode. 379 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 380 private int mScreenBrightnessModeSetting; 381 382 // The screen brightness setting override from the window manager 383 // to allow the current foreground activity to override the brightness. 384 // Use -1 to disable. 385 private int mScreenBrightnessOverrideFromWindowManager = -1; 386 387 // The user activity timeout override from the window manager 388 // to allow the current foreground activity to override the user activity timeout. 389 // Use -1 to disable. 390 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 391 392 // The screen brightness setting override from the settings application 393 // to temporarily adjust the brightness until next updated, 394 // Use -1 to disable. 395 private int mTemporaryScreenBrightnessSettingOverride = -1; 396 397 // The screen brightness adjustment setting override from the settings 398 // application to temporarily adjust the auto-brightness adjustment factor 399 // until next updated, in the range -1..1. 400 // Use NaN to disable. 401 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 402 403 // Time when we last logged a warning about calling userActivity() without permission. 404 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 405 406 // If true, the device is in low power mode. 407 private boolean mLowPowerModeEnabled; 408 409 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 410 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 411 412 private native void nativeInit(); 413 414 private static native void nativeAcquireSuspendBlocker(String name); 415 private static native void nativeReleaseSuspendBlocker(String name); 416 private static native void nativeSetInteractive(boolean enable); 417 private static native void nativeSetAutoSuspend(boolean enable); 418 private static native void nativeSendPowerHint(int hintId, int data); 419 420 public PowerManagerService(Context context) { 421 super(context); 422 mContext = context; 423 synchronized (mLock) { 424 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 425 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 426 mDisplaySuspendBlocker.acquire(); 427 mHoldingDisplaySuspendBlocker = true; 428 mHalAutoSuspendModeEnabled = false; 429 mHalInteractiveModeEnabled = true; 430 431 mScreenOnBlocker = new ScreenOnBlockerImpl(); 432 mWakefulness = WAKEFULNESS_AWAKE; 433 mInteractive = true; 434 435 nativeInit(); 436 nativeSetAutoSuspend(false); 437 nativeSetInteractive(true); 438 } 439 } 440 441 @Override 442 public void onStart() { 443 publishBinderService(Context.POWER_SERVICE, new BinderService()); 444 publishLocalService(PowerManagerInternal.class, new LocalService()); 445 } 446 447 /** 448 * Initialize the power manager. 449 * Must be called before any other functions within the power manager are called. 450 */ 451 public void init(LightsManager ls, 452 BatteryService bs, IBatteryStats bss, 453 IAppOpsService appOps) { 454 mLightsManager = ls; 455 mBatteryService = bs; 456 mBatteryStats = bss; 457 mAppOps = appOps; 458 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 459 mHandlerThread = new ServiceThread(TAG, 460 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 461 mHandlerThread.start(); 462 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 463 464 Watchdog.getInstance().addMonitor(this); 465 Watchdog.getInstance().addThread(mHandler); 466 } 467 468 void setPolicy(WindowManagerPolicy policy) { 469 synchronized (mLock) { 470 mPolicy = policy; 471 } 472 } 473 474 public void systemReady() { 475 synchronized (mLock) { 476 mSystemReady = true; 477 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 478 479 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 480 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 481 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 482 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 483 484 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 485 486 // The notifier runs on the system server's main looper so as not to interfere 487 // with the animations and other critical functions of the power manager. 488 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 489 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 490 mScreenOnBlocker, mPolicy); 491 492 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 493 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 494 mHandler); 495 mSettingsObserver = new SettingsObserver(mHandler); 496 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 497 498 // Initialize display power management. 499 mDisplayManagerInternal.initPowerManagement( 500 mDisplayPowerCallbacks, mHandler, sensorManager); 501 502 // Register for broadcasts from other components of the system. 503 IntentFilter filter = new IntentFilter(); 504 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 505 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 506 507 filter = new IntentFilter(); 508 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 509 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 510 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 511 512 filter = new IntentFilter(); 513 filter.addAction(Intent.ACTION_DREAMING_STARTED); 514 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 515 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 516 517 filter = new IntentFilter(); 518 filter.addAction(Intent.ACTION_USER_SWITCHED); 519 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 520 521 filter = new IntentFilter(); 522 filter.addAction(Intent.ACTION_DOCK_EVENT); 523 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 524 525 // Register for settings changes. 526 final ContentResolver resolver = mContext.getContentResolver(); 527 resolver.registerContentObserver(Settings.Secure.getUriFor( 528 Settings.Secure.SCREENSAVER_ENABLED), 529 false, mSettingsObserver, UserHandle.USER_ALL); 530 resolver.registerContentObserver(Settings.Secure.getUriFor( 531 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 532 false, mSettingsObserver, UserHandle.USER_ALL); 533 resolver.registerContentObserver(Settings.Secure.getUriFor( 534 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 535 false, mSettingsObserver, UserHandle.USER_ALL); 536 resolver.registerContentObserver(Settings.System.getUriFor( 537 Settings.System.SCREEN_OFF_TIMEOUT), 538 false, mSettingsObserver, UserHandle.USER_ALL); 539 resolver.registerContentObserver(Settings.Global.getUriFor( 540 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 541 false, mSettingsObserver, UserHandle.USER_ALL); 542 resolver.registerContentObserver(Settings.System.getUriFor( 543 Settings.System.SCREEN_BRIGHTNESS), 544 false, mSettingsObserver, UserHandle.USER_ALL); 545 resolver.registerContentObserver(Settings.System.getUriFor( 546 Settings.System.SCREEN_BRIGHTNESS_MODE), 547 false, mSettingsObserver, UserHandle.USER_ALL); 548 resolver.registerContentObserver(Settings.System.getUriFor( 549 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 550 false, mSettingsObserver, UserHandle.USER_ALL); 551 resolver.registerContentObserver(Settings.Global.getUriFor( 552 Settings.Global.LOW_POWER_MODE), 553 false, mSettingsObserver, UserHandle.USER_ALL); 554 // Go. 555 readConfigurationLocked(); 556 updateSettingsLocked(); 557 mDirty |= DIRTY_BATTERY_STATE; 558 updatePowerStateLocked(); 559 } 560 } 561 562 private void readConfigurationLocked() { 563 final Resources resources = mContext.getResources(); 564 565 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 566 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 567 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 568 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 569 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 570 com.android.internal.R.bool.config_unplugTurnsOnScreen); 571 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 572 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 573 mDreamsSupportedConfig = resources.getBoolean( 574 com.android.internal.R.bool.config_dreamsSupported); 575 mDreamsEnabledByDefaultConfig = resources.getBoolean( 576 com.android.internal.R.bool.config_dreamsEnabledByDefault); 577 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 578 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 579 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 580 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 581 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 582 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 583 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 584 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 585 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 586 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 587 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 588 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 589 mMinimumScreenOffTimeoutConfig = resources.getInteger( 590 com.android.internal.R.integer.config_minimumScreenOffTimeout); 591 mMaximumScreenDimDurationConfig = resources.getInteger( 592 com.android.internal.R.integer.config_maximumScreenDimDuration); 593 mMaximumScreenDimRatioConfig = resources.getFraction( 594 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 595 } 596 597 private void updateSettingsLocked() { 598 final ContentResolver resolver = mContext.getContentResolver(); 599 600 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 601 Settings.Secure.SCREENSAVER_ENABLED, 602 mDreamsEnabledByDefaultConfig ? 1 : 0, 603 UserHandle.USER_CURRENT) != 0); 604 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 605 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 606 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 607 UserHandle.USER_CURRENT) != 0); 608 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 609 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 610 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 611 UserHandle.USER_CURRENT) != 0); 612 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 613 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 614 UserHandle.USER_CURRENT); 615 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 616 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 617 618 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 619 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 620 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 621 UserHandle.USER_CURRENT); 622 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 623 mTemporaryScreenBrightnessSettingOverride = -1; 624 } 625 626 final float oldScreenAutoBrightnessAdjustmentSetting = 627 mScreenAutoBrightnessAdjustmentSetting; 628 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 629 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 630 UserHandle.USER_CURRENT); 631 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 632 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 633 } 634 635 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 636 Settings.System.SCREEN_BRIGHTNESS_MODE, 637 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 638 639 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 640 Settings.Global.LOW_POWER_MODE, 0) != 0; 641 if (lowPowerModeEnabled != mLowPowerModeEnabled) { 642 powerHintInternal(POWER_HINT_LOW_POWER_MODE, lowPowerModeEnabled ? 1 : 0); 643 mLowPowerModeEnabled = lowPowerModeEnabled; 644 BackgroundThread.getHandler().post(new Runnable() { 645 @Override 646 public void run() { 647 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 648 synchronized (mLock) { 649 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 650 mLowPowerModeListeners); 651 } 652 for (int i=0; i<listeners.size(); i++) { 653 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 654 } 655 } 656 }); 657 } 658 659 mDirty |= DIRTY_SETTINGS; 660 } 661 662 private void handleSettingsChangedLocked() { 663 updateSettingsLocked(); 664 updatePowerStateLocked(); 665 } 666 667 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 668 WorkSource ws, String historyTag, int uid, int pid) { 669 synchronized (mLock) { 670 if (DEBUG_SPEW) { 671 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 672 + ", flags=0x" + Integer.toHexString(flags) 673 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 674 } 675 676 WakeLock wakeLock; 677 int index = findWakeLockIndexLocked(lock); 678 if (index >= 0) { 679 wakeLock = mWakeLocks.get(index); 680 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 681 // Update existing wake lock. This shouldn't happen but is harmless. 682 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 683 uid, pid, ws, historyTag); 684 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 685 } 686 } else { 687 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 688 try { 689 lock.linkToDeath(wakeLock, 0); 690 } catch (RemoteException ex) { 691 throw new IllegalArgumentException("Wake lock is already dead."); 692 } 693 notifyWakeLockAcquiredLocked(wakeLock); 694 mWakeLocks.add(wakeLock); 695 } 696 697 applyWakeLockFlagsOnAcquireLocked(wakeLock); 698 mDirty |= DIRTY_WAKE_LOCKS; 699 updatePowerStateLocked(); 700 } 701 } 702 703 @SuppressWarnings("deprecation") 704 private static boolean isScreenLock(final WakeLock wakeLock) { 705 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 706 case PowerManager.FULL_WAKE_LOCK: 707 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 708 case PowerManager.SCREEN_DIM_WAKE_LOCK: 709 return true; 710 } 711 return false; 712 } 713 714 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 715 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 716 && isScreenLock(wakeLock)) { 717 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 718 } 719 } 720 721 private void releaseWakeLockInternal(IBinder lock, int flags) { 722 synchronized (mLock) { 723 int index = findWakeLockIndexLocked(lock); 724 if (index < 0) { 725 if (DEBUG_SPEW) { 726 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 727 + " [not found], flags=0x" + Integer.toHexString(flags)); 728 } 729 return; 730 } 731 732 WakeLock wakeLock = mWakeLocks.get(index); 733 if (DEBUG_SPEW) { 734 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 735 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 736 } 737 738 mWakeLocks.remove(index); 739 notifyWakeLockReleasedLocked(wakeLock); 740 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 741 742 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 743 mRequestWaitForNegativeProximity = true; 744 } 745 746 applyWakeLockFlagsOnReleaseLocked(wakeLock); 747 mDirty |= DIRTY_WAKE_LOCKS; 748 updatePowerStateLocked(); 749 } 750 } 751 752 private void handleWakeLockDeath(WakeLock wakeLock) { 753 synchronized (mLock) { 754 if (DEBUG_SPEW) { 755 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 756 + " [" + wakeLock.mTag + "]"); 757 } 758 759 int index = mWakeLocks.indexOf(wakeLock); 760 if (index < 0) { 761 return; 762 } 763 764 mWakeLocks.remove(index); 765 notifyWakeLockReleasedLocked(wakeLock); 766 767 applyWakeLockFlagsOnReleaseLocked(wakeLock); 768 mDirty |= DIRTY_WAKE_LOCKS; 769 updatePowerStateLocked(); 770 } 771 } 772 773 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 774 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 775 && isScreenLock(wakeLock)) { 776 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 777 PowerManager.USER_ACTIVITY_EVENT_OTHER, 778 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 779 wakeLock.mOwnerUid); 780 } 781 } 782 783 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 784 synchronized (mLock) { 785 int index = findWakeLockIndexLocked(lock); 786 if (index < 0) { 787 if (DEBUG_SPEW) { 788 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 789 + " [not found], ws=" + ws); 790 } 791 throw new IllegalArgumentException("Wake lock not active"); 792 } 793 794 WakeLock wakeLock = mWakeLocks.get(index); 795 if (DEBUG_SPEW) { 796 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 797 + " [" + wakeLock.mTag + "], ws=" + ws); 798 } 799 800 if (!wakeLock.hasSameWorkSource(ws)) { 801 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 802 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 803 ws, historyTag); 804 wakeLock.mHistoryTag = historyTag; 805 wakeLock.updateWorkSource(ws); 806 } 807 } 808 } 809 810 private int findWakeLockIndexLocked(IBinder lock) { 811 final int count = mWakeLocks.size(); 812 for (int i = 0; i < count; i++) { 813 if (mWakeLocks.get(i).mLock == lock) { 814 return i; 815 } 816 } 817 return -1; 818 } 819 820 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 821 if (mSystemReady) { 822 wakeLock.mNotifiedAcquired = true; 823 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 824 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 825 wakeLock.mHistoryTag); 826 } 827 } 828 829 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 830 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 831 if (mSystemReady && wakeLock.mNotifiedAcquired) { 832 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 833 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 834 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 835 } 836 } 837 838 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 839 if (mSystemReady && wakeLock.mNotifiedAcquired) { 840 wakeLock.mNotifiedAcquired = false; 841 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 842 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 843 wakeLock.mWorkSource, wakeLock.mHistoryTag); 844 } 845 } 846 847 @SuppressWarnings("deprecation") 848 private boolean isWakeLockLevelSupportedInternal(int level) { 849 synchronized (mLock) { 850 switch (level) { 851 case PowerManager.PARTIAL_WAKE_LOCK: 852 case PowerManager.SCREEN_DIM_WAKE_LOCK: 853 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 854 case PowerManager.FULL_WAKE_LOCK: 855 case PowerManager.DOZE_WAKE_LOCK: 856 return true; 857 858 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 859 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 860 861 default: 862 return false; 863 } 864 } 865 } 866 867 // Called from native code. 868 private void userActivityFromNative(long eventTime, int event, int flags) { 869 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 870 } 871 872 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 873 synchronized (mLock) { 874 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 875 updatePowerStateLocked(); 876 } 877 } 878 } 879 880 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 881 if (DEBUG_SPEW) { 882 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 883 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 884 + ", uid=" + uid); 885 } 886 887 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 888 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 889 || !mBootCompleted || !mSystemReady) { 890 return false; 891 } 892 893 mNotifier.onUserActivity(event, uid); 894 895 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 896 if (eventTime > mLastUserActivityTimeNoChangeLights 897 && eventTime > mLastUserActivityTime) { 898 mLastUserActivityTimeNoChangeLights = eventTime; 899 mDirty |= DIRTY_USER_ACTIVITY; 900 return true; 901 } 902 } else { 903 if (eventTime > mLastUserActivityTime) { 904 mLastUserActivityTime = eventTime; 905 mDirty |= DIRTY_USER_ACTIVITY; 906 return true; 907 } 908 } 909 return false; 910 } 911 912 private void wakeUpInternal(long eventTime) { 913 synchronized (mLock) { 914 if (wakeUpNoUpdateLocked(eventTime)) { 915 updatePowerStateLocked(); 916 } 917 } 918 } 919 920 private boolean wakeUpNoUpdateLocked(long eventTime) { 921 if (DEBUG_SPEW) { 922 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 923 } 924 925 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 926 || !mBootCompleted || !mSystemReady) { 927 return false; 928 } 929 930 switch (mWakefulness) { 931 case WAKEFULNESS_ASLEEP: 932 Slog.i(TAG, "Waking up from sleep..."); 933 break; 934 case WAKEFULNESS_DREAMING: 935 Slog.i(TAG, "Waking up from dream..."); 936 break; 937 case WAKEFULNESS_DOZING: 938 Slog.i(TAG, "Waking up from dozing..."); 939 break; 940 } 941 942 mLastWakeTime = eventTime; 943 mDirty |= DIRTY_WAKEFULNESS; 944 mWakefulness = WAKEFULNESS_AWAKE; 945 setInteractiveStateLocked(true, 0); 946 947 userActivityNoUpdateLocked( 948 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 949 return true; 950 } 951 952 private void goToSleepInternal(long eventTime, int reason, int flags) { 953 synchronized (mLock) { 954 if (goToSleepNoUpdateLocked(eventTime, reason, flags)) { 955 updatePowerStateLocked(); 956 } 957 } 958 } 959 960 // This method is called goToSleep for historical reasons but we actually start 961 // dozing before really going to sleep. 962 @SuppressWarnings("deprecation") 963 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags) { 964 if (DEBUG_SPEW) { 965 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 966 + ", reason=" + reason + ", flags=" + flags); 967 } 968 969 if (eventTime < mLastWakeTime 970 || mWakefulness == WAKEFULNESS_ASLEEP 971 || mWakefulness == WAKEFULNESS_DOZING 972 || !mBootCompleted || !mSystemReady) { 973 return false; 974 } 975 976 switch (reason) { 977 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 978 Slog.i(TAG, "Going to sleep due to device administration policy..."); 979 break; 980 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 981 Slog.i(TAG, "Going to sleep due to screen timeout..."); 982 break; 983 default: 984 Slog.i(TAG, "Going to sleep by user request..."); 985 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 986 break; 987 } 988 989 mLastSleepTime = eventTime; 990 mDirty |= DIRTY_WAKEFULNESS; 991 mWakefulness = WAKEFULNESS_DOZING; 992 mSandmanSummoned = true; 993 setInteractiveStateLocked(false, reason); 994 995 // Report the number of wake locks that will be cleared by going to sleep. 996 int numWakeLocksCleared = 0; 997 final int numWakeLocks = mWakeLocks.size(); 998 for (int i = 0; i < numWakeLocks; i++) { 999 final WakeLock wakeLock = mWakeLocks.get(i); 1000 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1001 case PowerManager.FULL_WAKE_LOCK: 1002 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1003 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1004 numWakeLocksCleared += 1; 1005 break; 1006 } 1007 } 1008 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1009 1010 // Skip dozing if requested. 1011 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1012 reallyGoToSleepNoUpdateLocked(eventTime); 1013 } 1014 return true; 1015 } 1016 1017 private void napInternal(long eventTime) { 1018 synchronized (mLock) { 1019 if (napNoUpdateLocked(eventTime)) { 1020 updatePowerStateLocked(); 1021 } 1022 } 1023 } 1024 1025 private boolean napNoUpdateLocked(long eventTime) { 1026 if (DEBUG_SPEW) { 1027 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 1028 } 1029 1030 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1031 || !mBootCompleted || !mSystemReady) { 1032 return false; 1033 } 1034 1035 Slog.i(TAG, "Nap time..."); 1036 1037 mDirty |= DIRTY_WAKEFULNESS; 1038 mWakefulness = WAKEFULNESS_DREAMING; 1039 mSandmanSummoned = true; 1040 setInteractiveStateLocked(true, 0); 1041 return true; 1042 } 1043 1044 // Done dozing, drop everything and go to sleep. 1045 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1046 if (DEBUG_SPEW) { 1047 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1048 } 1049 1050 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1051 || !mBootCompleted || !mSystemReady) { 1052 return false; 1053 } 1054 1055 Slog.i(TAG, "Sleeping..."); 1056 1057 mDirty |= DIRTY_WAKEFULNESS; 1058 mWakefulness = WAKEFULNESS_ASLEEP; 1059 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1060 return true; 1061 } 1062 1063 private void setInteractiveStateLocked(boolean interactive, int reason) { 1064 if (mInteractive != interactive) { 1065 finishInteractiveStateChangeLocked(); 1066 1067 mInteractive = interactive; 1068 mInteractiveChanging = true; 1069 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1070 } 1071 } 1072 1073 private void finishInteractiveStateChangeLocked() { 1074 if (mInteractiveChanging) { 1075 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1076 mInteractiveChanging = false; 1077 } 1078 } 1079 1080 /** 1081 * Updates the global power state based on dirty bits recorded in mDirty. 1082 * 1083 * This is the main function that performs power state transitions. 1084 * We centralize them here so that we can recompute the power state completely 1085 * each time something important changes, and ensure that we do it the same 1086 * way each time. The point is to gather all of the transition logic here. 1087 */ 1088 private void updatePowerStateLocked() { 1089 if (!mSystemReady || mDirty == 0) { 1090 return; 1091 } 1092 if (!Thread.holdsLock(mLock)) { 1093 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1094 } 1095 1096 // Phase 0: Basic state updates. 1097 updateIsPoweredLocked(mDirty); 1098 updateStayOnLocked(mDirty); 1099 1100 // Phase 1: Update wakefulness. 1101 // Loop because the wake lock and user activity computations are influenced 1102 // by changes in wakefulness. 1103 final long now = SystemClock.uptimeMillis(); 1104 int dirtyPhase2 = 0; 1105 for (;;) { 1106 int dirtyPhase1 = mDirty; 1107 dirtyPhase2 |= dirtyPhase1; 1108 mDirty = 0; 1109 1110 updateWakeLockSummaryLocked(dirtyPhase1); 1111 updateUserActivitySummaryLocked(now, dirtyPhase1); 1112 if (!updateWakefulnessLocked(dirtyPhase1)) { 1113 break; 1114 } 1115 } 1116 1117 // Phase 2: Update dreams and display power state. 1118 updateDreamLocked(dirtyPhase2); 1119 updateDisplayPowerStateLocked(dirtyPhase2); 1120 1121 // Phase 3: Send notifications, if needed. 1122 if (mDisplayReady) { 1123 finishInteractiveStateChangeLocked(); 1124 } 1125 1126 // Phase 4: Update suspend blocker. 1127 // Because we might release the last suspend blocker here, we need to make sure 1128 // we finished everything else first! 1129 updateSuspendBlockerLocked(); 1130 } 1131 1132 /** 1133 * Updates the value of mIsPowered. 1134 * Sets DIRTY_IS_POWERED if a change occurred. 1135 */ 1136 private void updateIsPoweredLocked(int dirty) { 1137 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1138 final boolean wasPowered = mIsPowered; 1139 final int oldPlugType = mPlugType; 1140 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1141 mPlugType = mBatteryService.getPlugType(); 1142 mBatteryLevel = mBatteryService.getBatteryLevel(); 1143 1144 if (DEBUG_SPEW) { 1145 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1146 + ", mIsPowered=" + mIsPowered 1147 + ", oldPlugType=" + oldPlugType 1148 + ", mPlugType=" + mPlugType 1149 + ", mBatteryLevel=" + mBatteryLevel); 1150 } 1151 1152 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1153 mDirty |= DIRTY_IS_POWERED; 1154 1155 // Update wireless dock detection state. 1156 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1157 mIsPowered, mPlugType, mBatteryLevel); 1158 1159 // Treat plugging and unplugging the devices as a user activity. 1160 // Users find it disconcerting when they plug or unplug the device 1161 // and it shuts off right away. 1162 // Some devices also wake the device when plugged or unplugged because 1163 // they don't have a charging LED. 1164 final long now = SystemClock.uptimeMillis(); 1165 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1166 dockedOnWirelessCharger)) { 1167 wakeUpNoUpdateLocked(now); 1168 } 1169 userActivityNoUpdateLocked( 1170 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1171 1172 // Tell the notifier whether wireless charging has started so that 1173 // it can provide feedback to the user. 1174 if (dockedOnWirelessCharger) { 1175 mNotifier.onWirelessChargingStarted(); 1176 } 1177 } 1178 } 1179 } 1180 1181 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1182 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1183 // Don't wake when powered unless configured to do so. 1184 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1185 return false; 1186 } 1187 1188 // Don't wake when undocked from wireless charger. 1189 // See WirelessChargerDetector for justification. 1190 if (wasPowered && !mIsPowered 1191 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1192 return false; 1193 } 1194 1195 // Don't wake when docked on wireless charger unless we are certain of it. 1196 // See WirelessChargerDetector for justification. 1197 if (!wasPowered && mIsPowered 1198 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1199 && !dockedOnWirelessCharger) { 1200 return false; 1201 } 1202 1203 // If already dreaming and becoming powered, then don't wake. 1204 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1205 return false; 1206 } 1207 1208 // Otherwise wake up! 1209 return true; 1210 } 1211 1212 /** 1213 * Updates the value of mStayOn. 1214 * Sets DIRTY_STAY_ON if a change occurred. 1215 */ 1216 private void updateStayOnLocked(int dirty) { 1217 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1218 final boolean wasStayOn = mStayOn; 1219 if (mStayOnWhilePluggedInSetting != 0 1220 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1221 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1222 } else { 1223 mStayOn = false; 1224 } 1225 1226 if (mStayOn != wasStayOn) { 1227 mDirty |= DIRTY_STAY_ON; 1228 } 1229 } 1230 } 1231 1232 /** 1233 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1234 * Note that most wake-locks are ignored when the system is asleep. 1235 * 1236 * This function must have no other side-effects. 1237 */ 1238 @SuppressWarnings("deprecation") 1239 private void updateWakeLockSummaryLocked(int dirty) { 1240 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1241 mWakeLockSummary = 0; 1242 1243 final int numWakeLocks = mWakeLocks.size(); 1244 for (int i = 0; i < numWakeLocks; i++) { 1245 final WakeLock wakeLock = mWakeLocks.get(i); 1246 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1247 case PowerManager.PARTIAL_WAKE_LOCK: 1248 mWakeLockSummary |= WAKE_LOCK_CPU; 1249 break; 1250 case PowerManager.FULL_WAKE_LOCK: 1251 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1252 break; 1253 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1254 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1255 break; 1256 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1257 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1258 break; 1259 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1260 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1261 break; 1262 case PowerManager.DOZE_WAKE_LOCK: 1263 mWakeLockSummary |= WAKE_LOCK_DOZE; 1264 break; 1265 } 1266 } 1267 1268 // Cancel wake locks that make no sense based on the current state. 1269 if (mWakefulness != WAKEFULNESS_DOZING) { 1270 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1271 } 1272 if (mWakefulness == WAKEFULNESS_ASLEEP 1273 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1274 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1275 | WAKE_LOCK_BUTTON_BRIGHT); 1276 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1277 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1278 } 1279 } 1280 1281 // Infer implied wake locks where necessary based on the current state. 1282 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1283 if (mWakefulness == WAKEFULNESS_AWAKE) { 1284 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1285 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1286 mWakeLockSummary |= WAKE_LOCK_CPU; 1287 } 1288 } 1289 1290 if (DEBUG_SPEW) { 1291 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1292 + wakefulnessToString(mWakefulness) 1293 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1294 } 1295 } 1296 } 1297 1298 /** 1299 * Updates the value of mUserActivitySummary to summarize the user requested 1300 * state of the system such as whether the screen should be bright or dim. 1301 * Note that user activity is ignored when the system is asleep. 1302 * 1303 * This function must have no other side-effects. 1304 */ 1305 private void updateUserActivitySummaryLocked(long now, int dirty) { 1306 // Update the status of the user activity timeout timer. 1307 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1308 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1309 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1310 1311 long nextTimeout = 0; 1312 if (mWakefulness == WAKEFULNESS_AWAKE 1313 || mWakefulness == WAKEFULNESS_DREAMING 1314 || mWakefulness == WAKEFULNESS_DOZING) { 1315 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1316 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1317 1318 mUserActivitySummary = 0; 1319 if (mLastUserActivityTime >= mLastWakeTime) { 1320 nextTimeout = mLastUserActivityTime 1321 + screenOffTimeout - screenDimDuration; 1322 if (now < nextTimeout) { 1323 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1324 } else { 1325 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1326 if (now < nextTimeout) { 1327 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1328 } 1329 } 1330 } 1331 if (mUserActivitySummary == 0 1332 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1333 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1334 if (now < nextTimeout 1335 && mDisplayPowerRequest.wantScreenOnNormal()) { 1336 mUserActivitySummary = mDisplayPowerRequest.screenState 1337 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1338 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1339 } 1340 } 1341 if (mUserActivitySummary != 0) { 1342 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1343 msg.setAsynchronous(true); 1344 mHandler.sendMessageAtTime(msg, nextTimeout); 1345 } 1346 } else { 1347 mUserActivitySummary = 0; 1348 } 1349 1350 if (DEBUG_SPEW) { 1351 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1352 + wakefulnessToString(mWakefulness) 1353 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1354 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1355 } 1356 } 1357 } 1358 1359 /** 1360 * Called when a user activity timeout has occurred. 1361 * Simply indicates that something about user activity has changed so that the new 1362 * state can be recomputed when the power state is updated. 1363 * 1364 * This function must have no other side-effects besides setting the dirty 1365 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1366 */ 1367 private void handleUserActivityTimeout() { // runs on handler thread 1368 synchronized (mLock) { 1369 if (DEBUG_SPEW) { 1370 Slog.d(TAG, "handleUserActivityTimeout"); 1371 } 1372 1373 mDirty |= DIRTY_USER_ACTIVITY; 1374 updatePowerStateLocked(); 1375 } 1376 } 1377 1378 private int getScreenOffTimeoutLocked() { 1379 int timeout = mScreenOffTimeoutSetting; 1380 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1381 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1382 } 1383 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1384 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1385 } 1386 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1387 } 1388 1389 private int getScreenDimDurationLocked(int screenOffTimeout) { 1390 return Math.min(mMaximumScreenDimDurationConfig, 1391 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1392 } 1393 1394 /** 1395 * Updates the wakefulness of the device. 1396 * 1397 * This is the function that decides whether the device should start dreaming 1398 * based on the current wake locks and user activity state. It may modify mDirty 1399 * if the wakefulness changes. 1400 * 1401 * Returns true if the wakefulness changed and we need to restart power state calculation. 1402 */ 1403 private boolean updateWakefulnessLocked(int dirty) { 1404 boolean changed = false; 1405 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1406 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1407 | DIRTY_DOCK_STATE)) != 0) { 1408 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1409 if (DEBUG_SPEW) { 1410 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1411 } 1412 final long time = SystemClock.uptimeMillis(); 1413 if (shouldNapAtBedTimeLocked()) { 1414 changed = napNoUpdateLocked(time); 1415 } else { 1416 changed = goToSleepNoUpdateLocked(time, 1417 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1418 } 1419 } 1420 } 1421 return changed; 1422 } 1423 1424 /** 1425 * Returns true if the device should automatically nap and start dreaming when the user 1426 * activity timeout has expired and it's bedtime. 1427 */ 1428 private boolean shouldNapAtBedTimeLocked() { 1429 return mDreamsActivateOnSleepSetting 1430 || (mDreamsActivateOnDockSetting 1431 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1432 } 1433 1434 /** 1435 * Returns true if the device should go to sleep now. 1436 * Also used when exiting a dream to determine whether we should go back 1437 * to being fully awake or else go to sleep for good. 1438 */ 1439 private boolean isItBedTimeYetLocked() { 1440 return mBootCompleted && !isBeingKeptAwakeLocked(); 1441 } 1442 1443 /** 1444 * Returns true if the device is being kept awake by a wake lock, user activity 1445 * or the stay on while powered setting. We also keep the phone awake when 1446 * the proximity sensor returns a positive result so that the device does not 1447 * lock while in a phone call. This function only controls whether the device 1448 * will go to sleep or dream which is independent of whether it will be allowed 1449 * to suspend. 1450 */ 1451 private boolean isBeingKeptAwakeLocked() { 1452 return mStayOn 1453 || mProximityPositive 1454 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1455 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1456 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1457 } 1458 1459 /** 1460 * Determines whether to post a message to the sandman to update the dream state. 1461 */ 1462 private void updateDreamLocked(int dirty) { 1463 if ((dirty & (DIRTY_WAKEFULNESS 1464 | DIRTY_USER_ACTIVITY 1465 | DIRTY_WAKE_LOCKS 1466 | DIRTY_BOOT_COMPLETED 1467 | DIRTY_SETTINGS 1468 | DIRTY_IS_POWERED 1469 | DIRTY_STAY_ON 1470 | DIRTY_PROXIMITY_POSITIVE 1471 | DIRTY_BATTERY_STATE)) != 0) { 1472 scheduleSandmanLocked(); 1473 } 1474 } 1475 1476 private void scheduleSandmanLocked() { 1477 if (!mSandmanScheduled) { 1478 mSandmanScheduled = true; 1479 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1480 msg.setAsynchronous(true); 1481 mHandler.sendMessage(msg); 1482 } 1483 } 1484 1485 /** 1486 * Called when the device enters or exits a dreaming or dozing state. 1487 * 1488 * We do this asynchronously because we must call out of the power manager to start 1489 * the dream and we don't want to hold our lock while doing so. There is a risk that 1490 * the device will wake or go to sleep in the meantime so we have to handle that case. 1491 */ 1492 private void handleSandman() { // runs on handler thread 1493 // Handle preconditions. 1494 final boolean startDreaming; 1495 final int wakefulness; 1496 synchronized (mLock) { 1497 mSandmanScheduled = false; 1498 wakefulness = mWakefulness; 1499 if (mSandmanSummoned) { 1500 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1501 || wakefulness == WAKEFULNESS_DOZING); 1502 mSandmanSummoned = false; 1503 } else { 1504 startDreaming = false; 1505 } 1506 } 1507 1508 // Start dreaming if needed. 1509 // We only control the dream on the handler thread, so we don't need to worry about 1510 // concurrent attempts to start or stop the dream. 1511 final boolean isDreaming; 1512 if (mDreamManager != null) { 1513 // Restart the dream whenever the sandman is summoned. 1514 if (startDreaming) { 1515 mDreamManager.stopDream(); 1516 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1517 } 1518 isDreaming = mDreamManager.isDreaming(); 1519 } else { 1520 isDreaming = false; 1521 } 1522 1523 // Update dream state. 1524 synchronized (mLock) { 1525 // Remember the initial battery level when the dream started. 1526 if (startDreaming && isDreaming) { 1527 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1528 if (wakefulness == WAKEFULNESS_DOZING) { 1529 Slog.i(TAG, "Dozing..."); 1530 } else { 1531 Slog.i(TAG, "Dreaming..."); 1532 } 1533 } 1534 1535 // If preconditions changed, wait for the next iteration to determine 1536 // whether the dream should continue (or be restarted). 1537 if (mSandmanSummoned || mWakefulness != wakefulness) { 1538 return; // wait for next cycle 1539 } 1540 1541 // Determine whether the dream should continue. 1542 if (wakefulness == WAKEFULNESS_DREAMING) { 1543 if (isDreaming && canDreamLocked()) { 1544 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1545 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1546 - mDreamsBatteryLevelDrainCutoffConfig 1547 && !isBeingKeptAwakeLocked()) { 1548 // If the user activity timeout expired and the battery appears 1549 // to be draining faster than it is charging then stop dreaming 1550 // and go to sleep. 1551 Slog.i(TAG, "Stopping dream because the battery appears to " 1552 + "be draining faster than it is charging. " 1553 + "Battery level when dream started: " 1554 + mBatteryLevelWhenDreamStarted + "%. " 1555 + "Battery level now: " + mBatteryLevel + "%."); 1556 } else { 1557 return; // continue dreaming 1558 } 1559 } 1560 1561 // Dream has ended or will be stopped. Update the power state. 1562 if (isItBedTimeYetLocked()) { 1563 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1564 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1565 updatePowerStateLocked(); 1566 } else { 1567 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1568 updatePowerStateLocked(); 1569 } 1570 } else if (wakefulness == WAKEFULNESS_DOZING) { 1571 if (isDreaming) { 1572 return; // continue dozing 1573 } 1574 1575 // Doze has ended or will be stopped. Update the power state. 1576 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1577 updatePowerStateLocked(); 1578 } 1579 } 1580 1581 // Stop dream. 1582 if (isDreaming) { 1583 mDreamManager.stopDream(); 1584 } 1585 } 1586 1587 /** 1588 * Returns true if the device is allowed to dream in its current state. 1589 * This function is not called when dozing. 1590 */ 1591 private boolean canDreamLocked() { 1592 if (mWakefulness != WAKEFULNESS_DREAMING 1593 || !mDreamsSupportedConfig 1594 || !mDreamsEnabledSetting 1595 || !mDisplayPowerRequest.wantScreenOnNormal() 1596 || !mBootCompleted) { 1597 return false; 1598 } 1599 if (!isBeingKeptAwakeLocked()) { 1600 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1601 return false; 1602 } 1603 if (!mIsPowered 1604 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1605 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1606 return false; 1607 } 1608 if (mIsPowered 1609 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1610 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1611 return false; 1612 } 1613 } 1614 return true; 1615 } 1616 1617 private void handleScreenOnBlockerReleased() { 1618 synchronized (mLock) { 1619 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1620 updatePowerStateLocked(); 1621 } 1622 } 1623 1624 /** 1625 * Updates the display power state asynchronously. 1626 * When the update is finished, mDisplayReady will be set to true. The display 1627 * controller posts a message to tell us when the actual display power state 1628 * has been updated so we come back here to double-check and finish up. 1629 * 1630 * This function recalculates the display power state each time. 1631 */ 1632 private void updateDisplayPowerStateLocked(int dirty) { 1633 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1634 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1635 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1636 final int newScreenState = getDesiredScreenPowerStateLocked(); 1637 mDisplayPowerRequest.screenState = newScreenState; 1638 1639 int screenBrightness = mScreenBrightnessSettingDefault; 1640 float screenAutoBrightnessAdjustment = 0.0f; 1641 boolean autoBrightness = (mScreenBrightnessModeSetting == 1642 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1643 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1644 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1645 autoBrightness = false; 1646 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1647 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1648 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1649 screenBrightness = mScreenBrightnessSetting; 1650 } 1651 if (autoBrightness) { 1652 screenBrightness = mScreenBrightnessSettingDefault; 1653 if (isValidAutoBrightnessAdjustment( 1654 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1655 screenAutoBrightnessAdjustment = 1656 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1657 } else if (isValidAutoBrightnessAdjustment( 1658 mScreenAutoBrightnessAdjustmentSetting)) { 1659 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1660 } 1661 } 1662 screenBrightness = Math.max(Math.min(screenBrightness, 1663 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1664 screenAutoBrightnessAdjustment = Math.max(Math.min( 1665 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1666 mDisplayPowerRequest.screenBrightness = screenBrightness; 1667 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1668 screenAutoBrightnessAdjustment; 1669 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1670 1671 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1672 1673 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1674 1675 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1676 1677 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1678 mRequestWaitForNegativeProximity); 1679 mRequestWaitForNegativeProximity = false; 1680 1681 if (DEBUG_SPEW) { 1682 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1683 + ", newScreenState=" + newScreenState 1684 + ", mWakefulness=" + mWakefulness 1685 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1686 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1687 + ", mBootCompleted=" + mBootCompleted); 1688 } 1689 } 1690 } 1691 1692 private static boolean isValidBrightness(int value) { 1693 return value >= 0 && value <= 255; 1694 } 1695 1696 private static boolean isValidAutoBrightnessAdjustment(float value) { 1697 // Handles NaN by always returning false. 1698 return value >= -1.0f && value <= 1.0f; 1699 } 1700 1701 private int getDesiredScreenPowerStateLocked() { 1702 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1703 return DisplayPowerRequest.SCREEN_STATE_OFF; 1704 } 1705 1706 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1707 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1708 } 1709 1710 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1711 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1712 || !mBootCompleted) { 1713 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1714 } 1715 1716 return DisplayPowerRequest.SCREEN_STATE_DIM; 1717 } 1718 1719 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1720 new DisplayManagerInternal.DisplayPowerCallbacks() { 1721 private int mDisplayState = Display.STATE_UNKNOWN; 1722 1723 @Override 1724 public void onStateChanged() { 1725 synchronized (mLock) { 1726 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1727 updatePowerStateLocked(); 1728 } 1729 } 1730 1731 @Override 1732 public void onProximityPositive() { 1733 synchronized (mLock) { 1734 mProximityPositive = true; 1735 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1736 updatePowerStateLocked(); 1737 } 1738 } 1739 1740 @Override 1741 public void onProximityNegative() { 1742 synchronized (mLock) { 1743 mProximityPositive = false; 1744 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1745 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1746 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1747 updatePowerStateLocked(); 1748 } 1749 } 1750 1751 @Override 1752 public void onDisplayStateChange(int state) { 1753 // This method is only needed to support legacy display blanking behavior 1754 // where the display's power state is coupled to suspend or to the power HAL. 1755 // The order of operations matters here. 1756 synchronized (mLock) { 1757 if (mDisplayState != state) { 1758 mDisplayState = state; 1759 if (state == Display.STATE_OFF) { 1760 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1761 setHalInteractiveModeLocked(false); 1762 } 1763 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1764 setHalAutoSuspendModeLocked(true); 1765 } 1766 } else { 1767 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1768 setHalAutoSuspendModeLocked(false); 1769 } 1770 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1771 setHalInteractiveModeLocked(true); 1772 } 1773 } 1774 } 1775 } 1776 } 1777 1778 @Override 1779 public void acquireSuspendBlocker() { 1780 mDisplaySuspendBlocker.acquire(); 1781 } 1782 1783 @Override 1784 public void releaseSuspendBlocker() { 1785 mDisplaySuspendBlocker.release(); 1786 } 1787 1788 @Override 1789 public String toString() { 1790 synchronized (this) { 1791 return "state=" + Display.stateToString(mDisplayState); 1792 } 1793 } 1794 }; 1795 1796 private boolean shouldUseProximitySensorLocked() { 1797 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1798 } 1799 1800 /** 1801 * Updates the suspend blocker that keeps the CPU alive. 1802 * 1803 * This function must have no other side-effects. 1804 */ 1805 private void updateSuspendBlockerLocked() { 1806 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1807 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1808 final boolean autoSuspend = !needDisplaySuspendBlocker; 1809 1810 // Disable auto-suspend if needed. 1811 if (!autoSuspend) { 1812 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1813 setHalAutoSuspendModeLocked(false); 1814 } 1815 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1816 setHalInteractiveModeLocked(true); 1817 } 1818 } 1819 1820 // First acquire suspend blockers if needed. 1821 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1822 mWakeLockSuspendBlocker.acquire(); 1823 mHoldingWakeLockSuspendBlocker = true; 1824 } 1825 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1826 mDisplaySuspendBlocker.acquire(); 1827 mHoldingDisplaySuspendBlocker = true; 1828 } 1829 1830 // Then release suspend blockers if needed. 1831 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1832 mWakeLockSuspendBlocker.release(); 1833 mHoldingWakeLockSuspendBlocker = false; 1834 } 1835 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1836 mDisplaySuspendBlocker.release(); 1837 mHoldingDisplaySuspendBlocker = false; 1838 } 1839 1840 // Enable auto-suspend if needed. 1841 if (autoSuspend) { 1842 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1843 setHalInteractiveModeLocked(false); 1844 } 1845 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1846 setHalAutoSuspendModeLocked(true); 1847 } 1848 } 1849 } 1850 1851 /** 1852 * Return true if we must keep a suspend blocker active on behalf of the display. 1853 * We do so if the screen is on or is in transition between states. 1854 */ 1855 private boolean needDisplaySuspendBlockerLocked() { 1856 if (!mDisplayReady) { 1857 return true; 1858 } 1859 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1860 // If we asked for the screen to be on but it is off due to the proximity 1861 // sensor then we may suspend but only if the configuration allows it. 1862 // On some hardware it may not be safe to suspend because the proximity 1863 // sensor may not be correctly configured as a wake-up source. 1864 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1865 || !mSuspendWhenScreenOffDueToProximityConfig) { 1866 return true; 1867 } 1868 } 1869 // Let the system suspend if the screen is off or dozing. 1870 return false; 1871 } 1872 1873 private void setHalAutoSuspendModeLocked(boolean enable) { 1874 if (enable != mHalAutoSuspendModeEnabled) { 1875 if (DEBUG) { 1876 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1877 } 1878 mHalAutoSuspendModeEnabled = enable; 1879 nativeSetAutoSuspend(enable); 1880 } 1881 } 1882 1883 private void setHalInteractiveModeLocked(boolean enable) { 1884 if (enable != mHalInteractiveModeEnabled) { 1885 if (DEBUG) { 1886 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1887 } 1888 mHalInteractiveModeEnabled = enable; 1889 nativeSetInteractive(enable); 1890 } 1891 } 1892 1893 private boolean isInteractiveInternal() { 1894 synchronized (mLock) { 1895 return mInteractive; 1896 } 1897 } 1898 1899 private void handleBatteryStateChangedLocked() { 1900 mDirty |= DIRTY_BATTERY_STATE; 1901 updatePowerStateLocked(); 1902 } 1903 1904 private void startWatchingForBootAnimationFinished() { 1905 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1906 } 1907 1908 private void checkIfBootAnimationFinished() { 1909 if (DEBUG) { 1910 Slog.d(TAG, "Check if boot animation finished..."); 1911 } 1912 1913 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1914 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1915 BOOT_ANIMATION_POLL_INTERVAL); 1916 return; 1917 } 1918 1919 synchronized (mLock) { 1920 if (!mBootCompleted) { 1921 Slog.i(TAG, "Boot animation finished."); 1922 handleBootCompletedLocked(); 1923 } 1924 } 1925 } 1926 1927 private void handleBootCompletedLocked() { 1928 final long now = SystemClock.uptimeMillis(); 1929 mBootCompleted = true; 1930 mDirty |= DIRTY_BOOT_COMPLETED; 1931 userActivityNoUpdateLocked( 1932 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1933 updatePowerStateLocked(); 1934 } 1935 1936 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1937 final String reason, boolean wait) { 1938 if (mHandler == null || !mSystemReady) { 1939 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1940 } 1941 1942 Runnable runnable = new Runnable() { 1943 @Override 1944 public void run() { 1945 synchronized (this) { 1946 if (shutdown) { 1947 ShutdownThread.shutdown(mContext, confirm); 1948 } else { 1949 ShutdownThread.reboot(mContext, reason, confirm); 1950 } 1951 } 1952 } 1953 }; 1954 1955 // ShutdownThread must run on a looper capable of displaying the UI. 1956 Message msg = Message.obtain(mHandler, runnable); 1957 msg.setAsynchronous(true); 1958 mHandler.sendMessage(msg); 1959 1960 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1961 if (wait) { 1962 synchronized (runnable) { 1963 while (true) { 1964 try { 1965 runnable.wait(); 1966 } catch (InterruptedException e) { 1967 } 1968 } 1969 } 1970 } 1971 } 1972 1973 private void crashInternal(final String message) { 1974 Thread t = new Thread("PowerManagerService.crash()") { 1975 @Override 1976 public void run() { 1977 throw new RuntimeException(message); 1978 } 1979 }; 1980 try { 1981 t.start(); 1982 t.join(); 1983 } catch (InterruptedException e) { 1984 Log.wtf(TAG, e); 1985 } 1986 } 1987 1988 private void setStayOnSettingInternal(int val) { 1989 Settings.Global.putInt(mContext.getContentResolver(), 1990 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1991 } 1992 1993 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1994 synchronized (mLock) { 1995 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1996 mDirty |= DIRTY_SETTINGS; 1997 updatePowerStateLocked(); 1998 } 1999 } 2000 2001 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2002 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2003 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2004 } 2005 2006 private void setAttentionLightInternal(boolean on, int color) { 2007 Light light; 2008 synchronized (mLock) { 2009 if (!mSystemReady) { 2010 return; 2011 } 2012 light = mAttentionLight; 2013 } 2014 2015 // Control light outside of lock. 2016 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2017 } 2018 2019 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2020 synchronized (mLock) { 2021 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2022 mScreenBrightnessOverrideFromWindowManager = brightness; 2023 mDirty |= DIRTY_SETTINGS; 2024 updatePowerStateLocked(); 2025 } 2026 } 2027 } 2028 2029 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2030 synchronized (mLock) { 2031 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2032 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2033 mDirty |= DIRTY_SETTINGS; 2034 updatePowerStateLocked(); 2035 } 2036 } 2037 } 2038 2039 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2040 synchronized (mLock) { 2041 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2042 mTemporaryScreenBrightnessSettingOverride = brightness; 2043 mDirty |= DIRTY_SETTINGS; 2044 updatePowerStateLocked(); 2045 } 2046 } 2047 } 2048 2049 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2050 synchronized (mLock) { 2051 // Note: This condition handles NaN because NaN is not equal to any other 2052 // value, including itself. 2053 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2054 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2055 mDirty |= DIRTY_SETTINGS; 2056 updatePowerStateLocked(); 2057 } 2058 } 2059 } 2060 2061 private void powerHintInternal(int hintId, int data) { 2062 nativeSendPowerHint(hintId, data); 2063 } 2064 2065 /** 2066 * Low-level function turn the device off immediately, without trying 2067 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2068 */ 2069 public static void lowLevelShutdown() { 2070 SystemProperties.set("sys.powerctl", "shutdown"); 2071 } 2072 2073 /** 2074 * Low-level function to reboot the device. On success, this 2075 * function doesn't return. If more than 20 seconds passes from 2076 * the time a reboot is requested (120 seconds for reboot to 2077 * recovery), this method returns. 2078 * 2079 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2080 */ 2081 public static void lowLevelReboot(String reason) { 2082 if (reason == null) { 2083 reason = ""; 2084 } 2085 long duration; 2086 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2087 // If we are rebooting to go into recovery, instead of 2088 // setting sys.powerctl directly we'll start the 2089 // pre-recovery service which will do some preparation for 2090 // recovery and then reboot for us. 2091 // 2092 // This preparation can take more than 20 seconds if 2093 // there's a very large update package, so lengthen the 2094 // timeout. 2095 SystemProperties.set("ctl.start", "pre-recovery"); 2096 duration = 120 * 1000L; 2097 } else { 2098 SystemProperties.set("sys.powerctl", "reboot," + reason); 2099 duration = 20 * 1000L; 2100 } 2101 try { 2102 Thread.sleep(duration); 2103 } catch (InterruptedException e) { 2104 Thread.currentThread().interrupt(); 2105 } 2106 } 2107 2108 @Override // Watchdog.Monitor implementation 2109 public void monitor() { 2110 // Grab and release lock for watchdog monitor to detect deadlocks. 2111 synchronized (mLock) { 2112 } 2113 } 2114 2115 private void dumpInternal(PrintWriter pw) { 2116 pw.println("POWER MANAGER (dumpsys power)\n"); 2117 2118 final WirelessChargerDetector wcd; 2119 synchronized (mLock) { 2120 pw.println("Power Manager State:"); 2121 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2122 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2123 pw.println(" mInteractive=" + mInteractive); 2124 pw.println(" mIsPowered=" + mIsPowered); 2125 pw.println(" mPlugType=" + mPlugType); 2126 pw.println(" mBatteryLevel=" + mBatteryLevel); 2127 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2128 pw.println(" mDockState=" + mDockState); 2129 pw.println(" mStayOn=" + mStayOn); 2130 pw.println(" mProximityPositive=" + mProximityPositive); 2131 pw.println(" mBootCompleted=" + mBootCompleted); 2132 pw.println(" mSystemReady=" + mSystemReady); 2133 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2134 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2135 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2136 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2137 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2138 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2139 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2140 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2141 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2142 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2143 pw.println(" mLastUserActivityTimeNoChangeLights=" 2144 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2145 pw.println(" mDisplayReady=" + mDisplayReady); 2146 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2147 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2148 2149 pw.println(); 2150 pw.println("Settings and Configuration:"); 2151 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2152 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2153 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2154 + mDecoupleHalInteractiveModeFromDisplayConfig); 2155 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2156 + mWakeUpWhenPluggedOrUnpluggedConfig); 2157 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2158 + mSuspendWhenScreenOffDueToProximityConfig); 2159 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2160 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2161 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2162 + mDreamsActivatedOnSleepByDefaultConfig); 2163 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2164 + mDreamsActivatedOnDockByDefaultConfig); 2165 pw.println(" mDreamsEnabledOnBatteryConfig=" 2166 + mDreamsEnabledOnBatteryConfig); 2167 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2168 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2169 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2170 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2171 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2172 + mDreamsBatteryLevelDrainCutoffConfig); 2173 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2174 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2175 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2176 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2177 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2178 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2179 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2180 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2181 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2182 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2183 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2184 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2185 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2186 + mScreenAutoBrightnessAdjustmentSetting); 2187 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2188 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2189 + mScreenBrightnessOverrideFromWindowManager); 2190 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2191 + mUserActivityTimeoutOverrideFromWindowManager); 2192 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2193 + mTemporaryScreenBrightnessSettingOverride); 2194 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2195 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2196 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2197 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2198 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2199 2200 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2201 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2202 pw.println(); 2203 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2204 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2205 2206 pw.println(); 2207 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2208 for (WakeLock wl : mWakeLocks) { 2209 pw.println(" " + wl); 2210 } 2211 2212 pw.println(); 2213 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2214 for (SuspendBlocker sb : mSuspendBlockers) { 2215 pw.println(" " + sb); 2216 } 2217 2218 pw.println(); 2219 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2220 2221 pw.println(); 2222 pw.println("Display Power: " + mDisplayPowerCallbacks); 2223 2224 wcd = mWirelessChargerDetector; 2225 } 2226 2227 if (wcd != null) { 2228 wcd.dump(pw); 2229 } 2230 } 2231 2232 private SuspendBlocker createSuspendBlockerLocked(String name) { 2233 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2234 mSuspendBlockers.add(suspendBlocker); 2235 return suspendBlocker; 2236 } 2237 2238 private static String wakefulnessToString(int wakefulness) { 2239 switch (wakefulness) { 2240 case WAKEFULNESS_ASLEEP: 2241 return "Asleep"; 2242 case WAKEFULNESS_AWAKE: 2243 return "Awake"; 2244 case WAKEFULNESS_DREAMING: 2245 return "Dreaming"; 2246 case WAKEFULNESS_DOZING: 2247 return "Dozing"; 2248 default: 2249 return Integer.toString(wakefulness); 2250 } 2251 } 2252 2253 private static WorkSource copyWorkSource(WorkSource workSource) { 2254 return workSource != null ? new WorkSource(workSource) : null; 2255 } 2256 2257 private final class BatteryReceiver extends BroadcastReceiver { 2258 @Override 2259 public void onReceive(Context context, Intent intent) { 2260 synchronized (mLock) { 2261 handleBatteryStateChangedLocked(); 2262 } 2263 } 2264 } 2265 2266 private final class BootCompletedReceiver extends BroadcastReceiver { 2267 @Override 2268 public void onReceive(Context context, Intent intent) { 2269 // This is our early signal that the system thinks it has finished booting. 2270 // However, the boot animation may still be running for a few more seconds 2271 // since it is ultimately in charge of when it terminates. 2272 // Defer transitioning into the boot completed state until the animation exits. 2273 // We do this so that the screen does not start to dim prematurely before 2274 // the user has actually had a chance to interact with the device. 2275 startWatchingForBootAnimationFinished(); 2276 } 2277 } 2278 2279 private final class DreamReceiver extends BroadcastReceiver { 2280 @Override 2281 public void onReceive(Context context, Intent intent) { 2282 synchronized (mLock) { 2283 scheduleSandmanLocked(); 2284 } 2285 } 2286 } 2287 2288 private final class UserSwitchedReceiver extends BroadcastReceiver { 2289 @Override 2290 public void onReceive(Context context, Intent intent) { 2291 synchronized (mLock) { 2292 handleSettingsChangedLocked(); 2293 } 2294 } 2295 } 2296 2297 private final class DockReceiver extends BroadcastReceiver { 2298 @Override 2299 public void onReceive(Context context, Intent intent) { 2300 synchronized (mLock) { 2301 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2302 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2303 if (mDockState != dockState) { 2304 mDockState = dockState; 2305 mDirty |= DIRTY_DOCK_STATE; 2306 updatePowerStateLocked(); 2307 } 2308 } 2309 } 2310 } 2311 2312 private final class SettingsObserver extends ContentObserver { 2313 public SettingsObserver(Handler handler) { 2314 super(handler); 2315 } 2316 2317 @Override 2318 public void onChange(boolean selfChange, Uri uri) { 2319 synchronized (mLock) { 2320 handleSettingsChangedLocked(); 2321 } 2322 } 2323 } 2324 2325 /** 2326 * Handler for asynchronous operations performed by the power manager. 2327 */ 2328 private final class PowerManagerHandler extends Handler { 2329 public PowerManagerHandler(Looper looper) { 2330 super(looper, null, true /*async*/); 2331 } 2332 2333 @Override 2334 public void handleMessage(Message msg) { 2335 switch (msg.what) { 2336 case MSG_USER_ACTIVITY_TIMEOUT: 2337 handleUserActivityTimeout(); 2338 break; 2339 case MSG_SANDMAN: 2340 handleSandman(); 2341 break; 2342 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2343 handleScreenOnBlockerReleased(); 2344 break; 2345 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2346 checkIfBootAnimationFinished(); 2347 break; 2348 } 2349 } 2350 } 2351 2352 /** 2353 * Represents a wake lock that has been acquired by an application. 2354 */ 2355 private final class WakeLock implements IBinder.DeathRecipient { 2356 public final IBinder mLock; 2357 public int mFlags; 2358 public String mTag; 2359 public final String mPackageName; 2360 public WorkSource mWorkSource; 2361 public String mHistoryTag; 2362 public final int mOwnerUid; 2363 public final int mOwnerPid; 2364 public boolean mNotifiedAcquired; 2365 2366 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2367 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2368 mLock = lock; 2369 mFlags = flags; 2370 mTag = tag; 2371 mPackageName = packageName; 2372 mWorkSource = copyWorkSource(workSource); 2373 mHistoryTag = historyTag; 2374 mOwnerUid = ownerUid; 2375 mOwnerPid = ownerPid; 2376 } 2377 2378 @Override 2379 public void binderDied() { 2380 PowerManagerService.this.handleWakeLockDeath(this); 2381 } 2382 2383 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2384 int ownerUid, int ownerPid) { 2385 return mFlags == flags 2386 && mTag.equals(tag) 2387 && hasSameWorkSource(workSource) 2388 && mOwnerUid == ownerUid 2389 && mOwnerPid == ownerPid; 2390 } 2391 2392 public void updateProperties(int flags, String tag, String packageName, 2393 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2394 if (!mPackageName.equals(packageName)) { 2395 throw new IllegalStateException("Existing wake lock package name changed: " 2396 + mPackageName + " to " + packageName); 2397 } 2398 if (mOwnerUid != ownerUid) { 2399 throw new IllegalStateException("Existing wake lock uid changed: " 2400 + mOwnerUid + " to " + ownerUid); 2401 } 2402 if (mOwnerPid != ownerPid) { 2403 throw new IllegalStateException("Existing wake lock pid changed: " 2404 + mOwnerPid + " to " + ownerPid); 2405 } 2406 mFlags = flags; 2407 mTag = tag; 2408 updateWorkSource(workSource); 2409 mHistoryTag = historyTag; 2410 } 2411 2412 public boolean hasSameWorkSource(WorkSource workSource) { 2413 return Objects.equal(mWorkSource, workSource); 2414 } 2415 2416 public void updateWorkSource(WorkSource workSource) { 2417 mWorkSource = copyWorkSource(workSource); 2418 } 2419 2420 @Override 2421 public String toString() { 2422 return getLockLevelString() 2423 + " '" + mTag + "'" + getLockFlagsString() 2424 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2425 } 2426 2427 @SuppressWarnings("deprecation") 2428 private String getLockLevelString() { 2429 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2430 case PowerManager.FULL_WAKE_LOCK: 2431 return "FULL_WAKE_LOCK "; 2432 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2433 return "SCREEN_BRIGHT_WAKE_LOCK "; 2434 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2435 return "SCREEN_DIM_WAKE_LOCK "; 2436 case PowerManager.PARTIAL_WAKE_LOCK: 2437 return "PARTIAL_WAKE_LOCK "; 2438 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2439 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2440 case PowerManager.DOZE_WAKE_LOCK: 2441 return "DOZE_WAKE_LOCK "; 2442 default: 2443 return "??? "; 2444 } 2445 } 2446 2447 private String getLockFlagsString() { 2448 String result = ""; 2449 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2450 result += " ACQUIRE_CAUSES_WAKEUP"; 2451 } 2452 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2453 result += " ON_AFTER_RELEASE"; 2454 } 2455 return result; 2456 } 2457 } 2458 2459 private final class SuspendBlockerImpl implements SuspendBlocker { 2460 private final String mName; 2461 private int mReferenceCount; 2462 2463 public SuspendBlockerImpl(String name) { 2464 mName = name; 2465 } 2466 2467 @Override 2468 protected void finalize() throws Throwable { 2469 try { 2470 if (mReferenceCount != 0) { 2471 Log.wtf(TAG, "Suspend blocker \"" + mName 2472 + "\" was finalized without being released!"); 2473 mReferenceCount = 0; 2474 nativeReleaseSuspendBlocker(mName); 2475 } 2476 } finally { 2477 super.finalize(); 2478 } 2479 } 2480 2481 @Override 2482 public void acquire() { 2483 synchronized (this) { 2484 mReferenceCount += 1; 2485 if (mReferenceCount == 1) { 2486 if (DEBUG_SPEW) { 2487 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2488 } 2489 nativeAcquireSuspendBlocker(mName); 2490 } 2491 } 2492 } 2493 2494 @Override 2495 public void release() { 2496 synchronized (this) { 2497 mReferenceCount -= 1; 2498 if (mReferenceCount == 0) { 2499 if (DEBUG_SPEW) { 2500 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2501 } 2502 nativeReleaseSuspendBlocker(mName); 2503 } else if (mReferenceCount < 0) { 2504 Log.wtf(TAG, "Suspend blocker \"" + mName 2505 + "\" was released without being acquired!", new Throwable()); 2506 mReferenceCount = 0; 2507 } 2508 } 2509 } 2510 2511 @Override 2512 public String toString() { 2513 synchronized (this) { 2514 return mName + ": ref count=" + mReferenceCount; 2515 } 2516 } 2517 } 2518 2519 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2520 private int mNestCount; 2521 2522 public boolean isHeld() { 2523 synchronized (this) { 2524 return mNestCount != 0; 2525 } 2526 } 2527 2528 @Override 2529 public void acquire() { 2530 synchronized (this) { 2531 mNestCount += 1; 2532 if (DEBUG) { 2533 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2534 } 2535 } 2536 } 2537 2538 @Override 2539 public void release() { 2540 synchronized (this) { 2541 mNestCount -= 1; 2542 if (mNestCount < 0) { 2543 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2544 new Throwable()); 2545 mNestCount = 0; 2546 } 2547 if (mNestCount == 0) { 2548 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2549 } 2550 if (DEBUG) { 2551 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2552 } 2553 } 2554 } 2555 2556 @Override 2557 public String toString() { 2558 synchronized (this) { 2559 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2560 } 2561 } 2562 } 2563 2564 private final class BinderService extends IPowerManager.Stub { 2565 @Override // Binder call 2566 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2567 String packageName, int uid) { 2568 if (uid < 0) { 2569 uid = Binder.getCallingUid(); 2570 } 2571 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2572 } 2573 2574 @Override // Binder call 2575 public void powerHint(int hintId, int data) { 2576 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2577 powerHintInternal(hintId, data); 2578 } 2579 2580 @Override // Binder call 2581 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2582 WorkSource ws, String historyTag) { 2583 if (lock == null) { 2584 throw new IllegalArgumentException("lock must not be null"); 2585 } 2586 if (packageName == null) { 2587 throw new IllegalArgumentException("packageName must not be null"); 2588 } 2589 PowerManager.validateWakeLockParameters(flags, tag); 2590 2591 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2592 if (ws != null && ws.size() != 0) { 2593 mContext.enforceCallingOrSelfPermission( 2594 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2595 } else { 2596 ws = null; 2597 } 2598 2599 final int uid = Binder.getCallingUid(); 2600 final int pid = Binder.getCallingPid(); 2601 final long ident = Binder.clearCallingIdentity(); 2602 try { 2603 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2604 } finally { 2605 Binder.restoreCallingIdentity(ident); 2606 } 2607 } 2608 2609 @Override // Binder call 2610 public void releaseWakeLock(IBinder lock, int flags) { 2611 if (lock == null) { 2612 throw new IllegalArgumentException("lock must not be null"); 2613 } 2614 2615 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2616 2617 final long ident = Binder.clearCallingIdentity(); 2618 try { 2619 releaseWakeLockInternal(lock, flags); 2620 } finally { 2621 Binder.restoreCallingIdentity(ident); 2622 } 2623 } 2624 2625 @Override // Binder call 2626 public void updateWakeLockUids(IBinder lock, int[] uids) { 2627 WorkSource ws = null; 2628 2629 if (uids != null) { 2630 ws = new WorkSource(); 2631 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2632 // one at a time? 2633 for (int i = 0; i < uids.length; i++) { 2634 ws.add(uids[i]); 2635 } 2636 } 2637 updateWakeLockWorkSource(lock, ws, null); 2638 } 2639 2640 @Override // Binder call 2641 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2642 if (lock == null) { 2643 throw new IllegalArgumentException("lock must not be null"); 2644 } 2645 2646 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2647 if (ws != null && ws.size() != 0) { 2648 mContext.enforceCallingOrSelfPermission( 2649 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2650 } else { 2651 ws = null; 2652 } 2653 2654 final long ident = Binder.clearCallingIdentity(); 2655 try { 2656 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2657 } finally { 2658 Binder.restoreCallingIdentity(ident); 2659 } 2660 } 2661 2662 @Override // Binder call 2663 public boolean isWakeLockLevelSupported(int level) { 2664 final long ident = Binder.clearCallingIdentity(); 2665 try { 2666 return isWakeLockLevelSupportedInternal(level); 2667 } finally { 2668 Binder.restoreCallingIdentity(ident); 2669 } 2670 } 2671 2672 @Override // Binder call 2673 public void userActivity(long eventTime, int event, int flags) { 2674 final long now = SystemClock.uptimeMillis(); 2675 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2676 != PackageManager.PERMISSION_GRANTED) { 2677 // Once upon a time applications could call userActivity(). 2678 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2679 // request instead of throwing a SecurityException so we don't break old apps. 2680 synchronized (mLock) { 2681 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2682 mLastWarningAboutUserActivityPermission = now; 2683 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2684 + "caller does not have DEVICE_POWER permission. " 2685 + "Please fix your app! " 2686 + " pid=" + Binder.getCallingPid() 2687 + " uid=" + Binder.getCallingUid()); 2688 } 2689 } 2690 return; 2691 } 2692 2693 if (eventTime > SystemClock.uptimeMillis()) { 2694 throw new IllegalArgumentException("event time must not be in the future"); 2695 } 2696 2697 final int uid = Binder.getCallingUid(); 2698 final long ident = Binder.clearCallingIdentity(); 2699 try { 2700 userActivityInternal(eventTime, event, flags, uid); 2701 } finally { 2702 Binder.restoreCallingIdentity(ident); 2703 } 2704 } 2705 2706 @Override // Binder call 2707 public void wakeUp(long eventTime) { 2708 if (eventTime > SystemClock.uptimeMillis()) { 2709 throw new IllegalArgumentException("event time must not be in the future"); 2710 } 2711 2712 mContext.enforceCallingOrSelfPermission( 2713 android.Manifest.permission.DEVICE_POWER, null); 2714 2715 final long ident = Binder.clearCallingIdentity(); 2716 try { 2717 wakeUpInternal(eventTime); 2718 } finally { 2719 Binder.restoreCallingIdentity(ident); 2720 } 2721 } 2722 2723 @Override // Binder call 2724 public void goToSleep(long eventTime, int reason, int flags) { 2725 if (eventTime > SystemClock.uptimeMillis()) { 2726 throw new IllegalArgumentException("event time must not be in the future"); 2727 } 2728 2729 mContext.enforceCallingOrSelfPermission( 2730 android.Manifest.permission.DEVICE_POWER, null); 2731 2732 final long ident = Binder.clearCallingIdentity(); 2733 try { 2734 goToSleepInternal(eventTime, reason, flags); 2735 } finally { 2736 Binder.restoreCallingIdentity(ident); 2737 } 2738 } 2739 2740 @Override // Binder call 2741 public void nap(long eventTime) { 2742 if (eventTime > SystemClock.uptimeMillis()) { 2743 throw new IllegalArgumentException("event time must not be in the future"); 2744 } 2745 2746 mContext.enforceCallingOrSelfPermission( 2747 android.Manifest.permission.DEVICE_POWER, null); 2748 2749 final long ident = Binder.clearCallingIdentity(); 2750 try { 2751 napInternal(eventTime); 2752 } finally { 2753 Binder.restoreCallingIdentity(ident); 2754 } 2755 } 2756 2757 @Override // Binder call 2758 public boolean isInteractive() { 2759 final long ident = Binder.clearCallingIdentity(); 2760 try { 2761 return isInteractiveInternal(); 2762 } finally { 2763 Binder.restoreCallingIdentity(ident); 2764 } 2765 } 2766 2767 /** 2768 * Reboots the device. 2769 * 2770 * @param confirm If true, shows a reboot confirmation dialog. 2771 * @param reason The reason for the reboot, or null if none. 2772 * @param wait If true, this call waits for the reboot to complete and does not return. 2773 */ 2774 @Override // Binder call 2775 public void reboot(boolean confirm, String reason, boolean wait) { 2776 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2777 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2778 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2779 } 2780 2781 final long ident = Binder.clearCallingIdentity(); 2782 try { 2783 shutdownOrRebootInternal(false, confirm, reason, wait); 2784 } finally { 2785 Binder.restoreCallingIdentity(ident); 2786 } 2787 } 2788 2789 /** 2790 * Shuts down the device. 2791 * 2792 * @param confirm If true, shows a shutdown confirmation dialog. 2793 * @param wait If true, this call waits for the shutdown to complete and does not return. 2794 */ 2795 @Override // Binder call 2796 public void shutdown(boolean confirm, boolean wait) { 2797 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2798 2799 final long ident = Binder.clearCallingIdentity(); 2800 try { 2801 shutdownOrRebootInternal(true, confirm, null, wait); 2802 } finally { 2803 Binder.restoreCallingIdentity(ident); 2804 } 2805 } 2806 2807 /** 2808 * Crash the runtime (causing a complete restart of the Android framework). 2809 * Requires REBOOT permission. Mostly for testing. Should not return. 2810 */ 2811 @Override // Binder call 2812 public void crash(String message) { 2813 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2814 2815 final long ident = Binder.clearCallingIdentity(); 2816 try { 2817 crashInternal(message); 2818 } finally { 2819 Binder.restoreCallingIdentity(ident); 2820 } 2821 } 2822 2823 /** 2824 * Set the setting that determines whether the device stays on when plugged in. 2825 * The argument is a bit string, with each bit specifying a power source that, 2826 * when the device is connected to that source, causes the device to stay on. 2827 * See {@link android.os.BatteryManager} for the list of power sources that 2828 * can be specified. Current values include 2829 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2830 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2831 * 2832 * Used by "adb shell svc power stayon ..." 2833 * 2834 * @param val an {@code int} containing the bits that specify which power sources 2835 * should cause the device to stay on. 2836 */ 2837 @Override // Binder call 2838 public void setStayOnSetting(int val) { 2839 mContext.enforceCallingOrSelfPermission( 2840 android.Manifest.permission.WRITE_SETTINGS, null); 2841 2842 final long ident = Binder.clearCallingIdentity(); 2843 try { 2844 setStayOnSettingInternal(val); 2845 } finally { 2846 Binder.restoreCallingIdentity(ident); 2847 } 2848 } 2849 2850 /** 2851 * Used by device administration to set the maximum screen off timeout. 2852 * 2853 * This method must only be called by the device administration policy manager. 2854 */ 2855 @Override // Binder call 2856 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2857 final long ident = Binder.clearCallingIdentity(); 2858 try { 2859 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2860 } finally { 2861 Binder.restoreCallingIdentity(ident); 2862 } 2863 } 2864 2865 /** 2866 * Used by the settings application and brightness control widgets to 2867 * temporarily override the current screen brightness setting so that the 2868 * user can observe the effect of an intended settings change without applying 2869 * it immediately. 2870 * 2871 * The override will be canceled when the setting value is next updated. 2872 * 2873 * @param brightness The overridden brightness. 2874 * 2875 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2876 */ 2877 @Override // Binder call 2878 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2879 mContext.enforceCallingOrSelfPermission( 2880 android.Manifest.permission.DEVICE_POWER, null); 2881 2882 final long ident = Binder.clearCallingIdentity(); 2883 try { 2884 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2885 } finally { 2886 Binder.restoreCallingIdentity(ident); 2887 } 2888 } 2889 2890 /** 2891 * Used by the settings application and brightness control widgets to 2892 * temporarily override the current screen auto-brightness adjustment setting so that the 2893 * user can observe the effect of an intended settings change without applying 2894 * it immediately. 2895 * 2896 * The override will be canceled when the setting value is next updated. 2897 * 2898 * @param adj The overridden brightness, or Float.NaN to disable the override. 2899 * 2900 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2901 */ 2902 @Override // Binder call 2903 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2904 mContext.enforceCallingOrSelfPermission( 2905 android.Manifest.permission.DEVICE_POWER, null); 2906 2907 final long ident = Binder.clearCallingIdentity(); 2908 try { 2909 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2910 } finally { 2911 Binder.restoreCallingIdentity(ident); 2912 } 2913 } 2914 2915 /** 2916 * Used by the phone application to make the attention LED flash when ringing. 2917 */ 2918 @Override // Binder call 2919 public void setAttentionLight(boolean on, int color) { 2920 mContext.enforceCallingOrSelfPermission( 2921 android.Manifest.permission.DEVICE_POWER, null); 2922 2923 final long ident = Binder.clearCallingIdentity(); 2924 try { 2925 setAttentionLightInternal(on, color); 2926 } finally { 2927 Binder.restoreCallingIdentity(ident); 2928 } 2929 } 2930 2931 @Override // Binder call 2932 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2933 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2934 != PackageManager.PERMISSION_GRANTED) { 2935 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2936 + Binder.getCallingPid() 2937 + ", uid=" + Binder.getCallingUid()); 2938 return; 2939 } 2940 2941 final long ident = Binder.clearCallingIdentity(); 2942 try { 2943 dumpInternal(pw); 2944 } finally { 2945 Binder.restoreCallingIdentity(ident); 2946 } 2947 } 2948 } 2949 2950 private final class LocalService extends PowerManagerInternal { 2951 /** 2952 * Used by the window manager to override the screen brightness based on the 2953 * current foreground activity. 2954 * 2955 * This method must only be called by the window manager. 2956 * 2957 * @param brightness The overridden brightness, or -1 to disable the override. 2958 */ 2959 @Override 2960 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2961 mContext.enforceCallingOrSelfPermission( 2962 android.Manifest.permission.DEVICE_POWER, null); 2963 2964 final long ident = Binder.clearCallingIdentity(); 2965 try { 2966 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2967 } finally { 2968 Binder.restoreCallingIdentity(ident); 2969 } 2970 } 2971 2972 /** 2973 * Used by the window manager to override the button brightness based on the 2974 * current foreground activity. 2975 * 2976 * This method must only be called by the window manager. 2977 * 2978 * @param brightness The overridden brightness, or -1 to disable the override. 2979 */ 2980 @Override 2981 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2982 // Do nothing. 2983 // Button lights are not currently supported in the new implementation. 2984 mContext.enforceCallingOrSelfPermission( 2985 android.Manifest.permission.DEVICE_POWER, null); 2986 } 2987 2988 /** 2989 * Used by the window manager to override the user activity timeout based on the 2990 * current foreground activity. It can only be used to make the timeout shorter 2991 * than usual, not longer. 2992 * 2993 * This method must only be called by the window manager. 2994 * 2995 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2996 */ 2997 @Override 2998 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2999 mContext.enforceCallingOrSelfPermission( 3000 android.Manifest.permission.DEVICE_POWER, null); 3001 3002 final long ident = Binder.clearCallingIdentity(); 3003 try { 3004 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3005 } finally { 3006 Binder.restoreCallingIdentity(ident); 3007 } 3008 } 3009 3010 @Override 3011 public boolean getLowPowerModeEnabled() { 3012 synchronized (mLock) { 3013 return mLowPowerModeEnabled; 3014 } 3015 } 3016 3017 @Override 3018 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3019 synchronized (mLock) { 3020 mLowPowerModeListeners.add(listener); 3021 } 3022 } 3023 3024 @Override 3025 public void setPolicy(WindowManagerPolicy policy) { 3026 PowerManagerService.this.setPolicy(policy); 3027 } 3028 } 3029} 3030