PowerManagerService.java revision cbefd8dd2befcb768f911a63becc427ec4c13250
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 and minimum screen off timeout in milliseconds. 152 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 153 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 154 155 // The screen dim duration, in milliseconds. 156 // This is subtracted from the end of the screen off timeout so the 157 // minimum screen off timeout should be longer than this. 158 private static final int SCREEN_DIM_DURATION = 7 * 1000; 159 160 // The maximum screen dim time expressed as a ratio relative to the screen 161 // off timeout. If the screen off timeout is very short then we want the 162 // dim timeout to also be quite short so that most of the time is spent on. 163 // Otherwise the user won't get much screen on time before dimming occurs. 164 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 165 166 // The name of the boot animation service in init.rc. 167 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 168 169 // Poll interval in milliseconds for watching boot animation finished. 170 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 171 172 // Used to send the hint to the PowerHAL indicating transitions 173 // from and to the low power mode. 174 private static final int POWER_HINT_LOW_POWER_MODE = 5; 175 176 private final Context mContext; 177 private LightsManager mLightsManager; 178 private BatteryService mBatteryService; 179 private DisplayManagerInternal mDisplayManagerInternal; 180 private IBatteryStats mBatteryStats; 181 private IAppOpsService mAppOps; 182 private ServiceThread mHandlerThread; 183 private PowerManagerHandler mHandler; 184 private WindowManagerPolicy mPolicy; 185 private Notifier mNotifier; 186 private WirelessChargerDetector mWirelessChargerDetector; 187 private SettingsObserver mSettingsObserver; 188 private DreamManagerInternal mDreamManager; 189 private Light mAttentionLight; 190 191 private final Object mLock = new Object(); 192 193 // A bitfield that indicates what parts of the power state have 194 // changed and need to be recalculated. 195 private int mDirty; 196 197 // Indicates whether the device is awake or asleep or somewhere in between. 198 // This is distinct from the screen power state, which is managed separately. 199 private int mWakefulness; 200 201 // True if the sandman has just been summoned for the first time since entering the 202 // dreaming or dozing state. Indicates whether a new dream should begin. 203 private boolean mSandmanSummoned; 204 205 // True if MSG_SANDMAN has been scheduled. 206 private boolean mSandmanScheduled; 207 208 // Table of all suspend blockers. 209 // There should only be a few of these. 210 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 211 212 // Table of all wake locks acquired by applications. 213 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 214 215 // A bitfield that summarizes the state of all active wakelocks. 216 private int mWakeLockSummary; 217 218 // True if the device is in an interactive state. 219 private boolean mInteractive; 220 private boolean mInteractiveChanging; 221 222 // If true, instructs the display controller to wait for the proximity sensor to 223 // go negative before turning the screen on. 224 private boolean mRequestWaitForNegativeProximity; 225 226 // Timestamp of the last time the device was awoken or put to sleep. 227 private long mLastWakeTime; 228 private long mLastSleepTime; 229 230 // Timestamp of the last call to user activity. 231 private long mLastUserActivityTime; 232 private long mLastUserActivityTimeNoChangeLights; 233 234 // A bitfield that summarizes the effect of the user activity timer. 235 // A zero value indicates that the user activity timer has expired. 236 private int mUserActivitySummary; 237 238 // The desired display power state. The actual state may lag behind the 239 // requested because it is updated asynchronously by the display power controller. 240 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 241 242 // True if the display power state has been fully applied, which means the display 243 // is actually on or actually off or whatever was requested. 244 private boolean mDisplayReady; 245 246 // The suspend blocker used to keep the CPU alive when an application has acquired 247 // a wake lock. 248 private final SuspendBlocker mWakeLockSuspendBlocker; 249 250 // True if the wake lock suspend blocker has been acquired. 251 private boolean mHoldingWakeLockSuspendBlocker; 252 253 // The suspend blocker used to keep the CPU alive when the display is on, the 254 // display is getting ready or there is user activity (in which case the display 255 // must be on). 256 private final SuspendBlocker mDisplaySuspendBlocker; 257 258 // True if the display suspend blocker has been acquired. 259 private boolean mHoldingDisplaySuspendBlocker; 260 261 // The screen on blocker used to keep the screen from turning on while the lock 262 // screen is coming up. 263 private final ScreenOnBlockerImpl mScreenOnBlocker; 264 265 // True if systemReady() has been called. 266 private boolean mSystemReady; 267 268 // True if boot completed occurred. We keep the screen on until this happens. 269 private boolean mBootCompleted; 270 271 // True if auto-suspend mode is enabled. 272 // Refer to autosuspend.h. 273 private boolean mHalAutoSuspendModeEnabled; 274 275 // True if interactive mode is enabled. 276 // Refer to power.h. 277 private boolean mHalInteractiveModeEnabled; 278 279 // True if the device is plugged into a power source. 280 private boolean mIsPowered; 281 282 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 283 private int mPlugType; 284 285 // The current battery level percentage. 286 private int mBatteryLevel; 287 288 // The battery level percentage at the time the dream started. 289 // This is used to terminate a dream and go to sleep if the battery is 290 // draining faster than it is charging and the user activity timeout has expired. 291 private int mBatteryLevelWhenDreamStarted; 292 293 // The current dock state. 294 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 295 296 // True to decouple auto-suspend mode from the display state. 297 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 298 299 // True to decouple interactive mode from the display state. 300 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 301 302 // True if the device should wake up when plugged or unplugged. 303 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 304 305 // True if the device should suspend when the screen is off due to proximity. 306 private boolean mSuspendWhenScreenOffDueToProximityConfig; 307 308 // True if dreams are supported on this device. 309 private boolean mDreamsSupportedConfig; 310 311 // Default value for dreams enabled 312 private boolean mDreamsEnabledByDefaultConfig; 313 314 // Default value for dreams activate-on-sleep 315 private boolean mDreamsActivatedOnSleepByDefaultConfig; 316 317 // Default value for dreams activate-on-dock 318 private boolean mDreamsActivatedOnDockByDefaultConfig; 319 320 // True if dreams can run while not plugged in. 321 private boolean mDreamsEnabledOnBatteryConfig; 322 323 // Minimum battery level to allow dreaming when powered. 324 // Use -1 to disable this safety feature. 325 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 326 327 // Minimum battery level to allow dreaming when not powered. 328 // Use -1 to disable this safety feature. 329 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 330 331 // If the battery level drops by this percentage and the user activity timeout 332 // has expired, then assume the device is receiving insufficient current to charge 333 // effectively and terminate the dream. Use -1 to disable this safety feature. 334 private int mDreamsBatteryLevelDrainCutoffConfig; 335 336 // True if dreams are enabled by the user. 337 private boolean mDreamsEnabledSetting; 338 339 // True if dreams should be activated on sleep. 340 private boolean mDreamsActivateOnSleepSetting; 341 342 // True if dreams should be activated on dock. 343 private boolean mDreamsActivateOnDockSetting; 344 345 // The screen off timeout setting value in milliseconds. 346 private int mScreenOffTimeoutSetting; 347 348 // The maximum allowable screen off timeout according to the device 349 // administration policy. Overrides other settings. 350 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 351 352 // The stay on while plugged in setting. 353 // A bitfield of battery conditions under which to make the screen stay on. 354 private int mStayOnWhilePluggedInSetting; 355 356 // True if the device should stay on. 357 private boolean mStayOn; 358 359 // True if the proximity sensor reads a positive result. 360 private boolean mProximityPositive; 361 362 // Screen brightness setting limits. 363 private int mScreenBrightnessSettingMinimum; 364 private int mScreenBrightnessSettingMaximum; 365 private int mScreenBrightnessSettingDefault; 366 367 // The screen brightness setting, from 0 to 255. 368 // Use -1 if no value has been set. 369 private int mScreenBrightnessSetting; 370 371 // The screen auto-brightness adjustment setting, from -1 to 1. 372 // Use 0 if there is no adjustment. 373 private float mScreenAutoBrightnessAdjustmentSetting; 374 375 // The screen brightness mode. 376 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 377 private int mScreenBrightnessModeSetting; 378 379 // The screen brightness setting override from the window manager 380 // to allow the current foreground activity to override the brightness. 381 // Use -1 to disable. 382 private int mScreenBrightnessOverrideFromWindowManager = -1; 383 384 // The user activity timeout override from the window manager 385 // to allow the current foreground activity to override the user activity timeout. 386 // Use -1 to disable. 387 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 388 389 // The screen brightness setting override from the settings application 390 // to temporarily adjust the brightness until next updated, 391 // Use -1 to disable. 392 private int mTemporaryScreenBrightnessSettingOverride = -1; 393 394 // The screen brightness adjustment setting override from the settings 395 // application to temporarily adjust the auto-brightness adjustment factor 396 // until next updated, in the range -1..1. 397 // Use NaN to disable. 398 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 399 400 // Time when we last logged a warning about calling userActivity() without permission. 401 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 402 403 // If true, the device is in low power mode. 404 private boolean mLowPowerModeEnabled; 405 406 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 407 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 408 409 private native void nativeInit(); 410 411 private static native void nativeAcquireSuspendBlocker(String name); 412 private static native void nativeReleaseSuspendBlocker(String name); 413 private static native void nativeSetInteractive(boolean enable); 414 private static native void nativeSetAutoSuspend(boolean enable); 415 private static native void nativeSendPowerHint(int hintId, int data); 416 417 public PowerManagerService(Context context) { 418 super(context); 419 mContext = context; 420 synchronized (mLock) { 421 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 422 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 423 mDisplaySuspendBlocker.acquire(); 424 mHoldingDisplaySuspendBlocker = true; 425 mHalAutoSuspendModeEnabled = false; 426 mHalInteractiveModeEnabled = true; 427 428 mScreenOnBlocker = new ScreenOnBlockerImpl(); 429 mWakefulness = WAKEFULNESS_AWAKE; 430 mInteractive = true; 431 432 nativeInit(); 433 nativeSetAutoSuspend(false); 434 nativeSetInteractive(true); 435 } 436 } 437 438 @Override 439 public void onStart() { 440 publishBinderService(Context.POWER_SERVICE, new BinderService()); 441 publishLocalService(PowerManagerInternal.class, new LocalService()); 442 } 443 444 /** 445 * Initialize the power manager. 446 * Must be called before any other functions within the power manager are called. 447 */ 448 public void init(LightsManager ls, 449 BatteryService bs, IBatteryStats bss, 450 IAppOpsService appOps) { 451 mLightsManager = ls; 452 mBatteryService = bs; 453 mBatteryStats = bss; 454 mAppOps = appOps; 455 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 456 mHandlerThread = new ServiceThread(TAG, 457 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 458 mHandlerThread.start(); 459 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 460 461 Watchdog.getInstance().addMonitor(this); 462 Watchdog.getInstance().addThread(mHandler); 463 } 464 465 void setPolicy(WindowManagerPolicy policy) { 466 synchronized (mLock) { 467 mPolicy = policy; 468 } 469 } 470 471 public void systemReady() { 472 synchronized (mLock) { 473 mSystemReady = true; 474 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 475 476 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 477 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 478 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 479 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 480 481 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 482 483 // The notifier runs on the system server's main looper so as not to interfere 484 // with the animations and other critical functions of the power manager. 485 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 486 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 487 mScreenOnBlocker, mPolicy); 488 489 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 490 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 491 mHandler); 492 mSettingsObserver = new SettingsObserver(mHandler); 493 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 494 495 // Initialize display power management. 496 mDisplayManagerInternal.initPowerManagement( 497 mDisplayPowerCallbacks, mHandler, sensorManager); 498 499 // Register for broadcasts from other components of the system. 500 IntentFilter filter = new IntentFilter(); 501 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 502 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 503 504 filter = new IntentFilter(); 505 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 506 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 507 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 508 509 filter = new IntentFilter(); 510 filter.addAction(Intent.ACTION_DREAMING_STARTED); 511 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 512 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 513 514 filter = new IntentFilter(); 515 filter.addAction(Intent.ACTION_USER_SWITCHED); 516 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 517 518 filter = new IntentFilter(); 519 filter.addAction(Intent.ACTION_DOCK_EVENT); 520 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 521 522 // Register for settings changes. 523 final ContentResolver resolver = mContext.getContentResolver(); 524 resolver.registerContentObserver(Settings.Secure.getUriFor( 525 Settings.Secure.SCREENSAVER_ENABLED), 526 false, mSettingsObserver, UserHandle.USER_ALL); 527 resolver.registerContentObserver(Settings.Secure.getUriFor( 528 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 529 false, mSettingsObserver, UserHandle.USER_ALL); 530 resolver.registerContentObserver(Settings.Secure.getUriFor( 531 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 532 false, mSettingsObserver, UserHandle.USER_ALL); 533 resolver.registerContentObserver(Settings.System.getUriFor( 534 Settings.System.SCREEN_OFF_TIMEOUT), 535 false, mSettingsObserver, UserHandle.USER_ALL); 536 resolver.registerContentObserver(Settings.Global.getUriFor( 537 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 538 false, mSettingsObserver, UserHandle.USER_ALL); 539 resolver.registerContentObserver(Settings.System.getUriFor( 540 Settings.System.SCREEN_BRIGHTNESS), 541 false, mSettingsObserver, UserHandle.USER_ALL); 542 resolver.registerContentObserver(Settings.System.getUriFor( 543 Settings.System.SCREEN_BRIGHTNESS_MODE), 544 false, mSettingsObserver, UserHandle.USER_ALL); 545 resolver.registerContentObserver(Settings.System.getUriFor( 546 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 547 false, mSettingsObserver, UserHandle.USER_ALL); 548 resolver.registerContentObserver(Settings.Global.getUriFor( 549 Settings.Global.LOW_POWER_MODE), 550 false, mSettingsObserver, UserHandle.USER_ALL); 551 // Go. 552 readConfigurationLocked(); 553 updateSettingsLocked(); 554 mDirty |= DIRTY_BATTERY_STATE; 555 updatePowerStateLocked(); 556 } 557 } 558 559 private void readConfigurationLocked() { 560 final Resources resources = mContext.getResources(); 561 562 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 563 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 564 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 565 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 566 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 567 com.android.internal.R.bool.config_unplugTurnsOnScreen); 568 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 569 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 570 mDreamsSupportedConfig = resources.getBoolean( 571 com.android.internal.R.bool.config_dreamsSupported); 572 mDreamsEnabledByDefaultConfig = resources.getBoolean( 573 com.android.internal.R.bool.config_dreamsEnabledByDefault); 574 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 575 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 576 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 577 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 578 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 579 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 580 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 581 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 582 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 583 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 584 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 585 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 586 } 587 588 private void updateSettingsLocked() { 589 final ContentResolver resolver = mContext.getContentResolver(); 590 591 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 592 Settings.Secure.SCREENSAVER_ENABLED, 593 mDreamsEnabledByDefaultConfig ? 1 : 0, 594 UserHandle.USER_CURRENT) != 0); 595 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 596 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 597 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 598 UserHandle.USER_CURRENT) != 0); 599 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 600 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 601 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 602 UserHandle.USER_CURRENT) != 0); 603 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 604 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 605 UserHandle.USER_CURRENT); 606 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 607 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 608 609 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 610 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 611 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 612 UserHandle.USER_CURRENT); 613 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 614 mTemporaryScreenBrightnessSettingOverride = -1; 615 } 616 617 final float oldScreenAutoBrightnessAdjustmentSetting = 618 mScreenAutoBrightnessAdjustmentSetting; 619 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 620 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 621 UserHandle.USER_CURRENT); 622 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 623 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 624 } 625 626 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 627 Settings.System.SCREEN_BRIGHTNESS_MODE, 628 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 629 630 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 631 Settings.Global.LOW_POWER_MODE, 0) != 0; 632 if (lowPowerModeEnabled != mLowPowerModeEnabled) { 633 powerHintInternal(POWER_HINT_LOW_POWER_MODE, lowPowerModeEnabled ? 1 : 0); 634 mLowPowerModeEnabled = lowPowerModeEnabled; 635 BackgroundThread.getHandler().post(new Runnable() { 636 @Override 637 public void run() { 638 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 639 synchronized (mLock) { 640 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 641 mLowPowerModeListeners); 642 } 643 for (int i=0; i<listeners.size(); i++) { 644 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 645 } 646 } 647 }); 648 } 649 650 mDirty |= DIRTY_SETTINGS; 651 } 652 653 private void handleSettingsChangedLocked() { 654 updateSettingsLocked(); 655 updatePowerStateLocked(); 656 } 657 658 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 659 WorkSource ws, String historyTag, int uid, int pid) { 660 synchronized (mLock) { 661 if (DEBUG_SPEW) { 662 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 663 + ", flags=0x" + Integer.toHexString(flags) 664 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 665 } 666 667 WakeLock wakeLock; 668 int index = findWakeLockIndexLocked(lock); 669 if (index >= 0) { 670 wakeLock = mWakeLocks.get(index); 671 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 672 // Update existing wake lock. This shouldn't happen but is harmless. 673 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 674 uid, pid, ws, historyTag); 675 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 676 } 677 } else { 678 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 679 try { 680 lock.linkToDeath(wakeLock, 0); 681 } catch (RemoteException ex) { 682 throw new IllegalArgumentException("Wake lock is already dead."); 683 } 684 notifyWakeLockAcquiredLocked(wakeLock); 685 mWakeLocks.add(wakeLock); 686 } 687 688 applyWakeLockFlagsOnAcquireLocked(wakeLock); 689 mDirty |= DIRTY_WAKE_LOCKS; 690 updatePowerStateLocked(); 691 } 692 } 693 694 @SuppressWarnings("deprecation") 695 private static boolean isScreenLock(final WakeLock wakeLock) { 696 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 697 case PowerManager.FULL_WAKE_LOCK: 698 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 699 case PowerManager.SCREEN_DIM_WAKE_LOCK: 700 return true; 701 } 702 return false; 703 } 704 705 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 706 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 707 && isScreenLock(wakeLock)) { 708 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 709 } 710 } 711 712 private void releaseWakeLockInternal(IBinder lock, int flags) { 713 synchronized (mLock) { 714 int index = findWakeLockIndexLocked(lock); 715 if (index < 0) { 716 if (DEBUG_SPEW) { 717 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 718 + " [not found], flags=0x" + Integer.toHexString(flags)); 719 } 720 return; 721 } 722 723 WakeLock wakeLock = mWakeLocks.get(index); 724 if (DEBUG_SPEW) { 725 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 726 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 727 } 728 729 mWakeLocks.remove(index); 730 notifyWakeLockReleasedLocked(wakeLock); 731 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 732 733 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 734 mRequestWaitForNegativeProximity = true; 735 } 736 737 applyWakeLockFlagsOnReleaseLocked(wakeLock); 738 mDirty |= DIRTY_WAKE_LOCKS; 739 updatePowerStateLocked(); 740 } 741 } 742 743 private void handleWakeLockDeath(WakeLock wakeLock) { 744 synchronized (mLock) { 745 if (DEBUG_SPEW) { 746 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 747 + " [" + wakeLock.mTag + "]"); 748 } 749 750 int index = mWakeLocks.indexOf(wakeLock); 751 if (index < 0) { 752 return; 753 } 754 755 mWakeLocks.remove(index); 756 notifyWakeLockReleasedLocked(wakeLock); 757 758 applyWakeLockFlagsOnReleaseLocked(wakeLock); 759 mDirty |= DIRTY_WAKE_LOCKS; 760 updatePowerStateLocked(); 761 } 762 } 763 764 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 765 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 766 && isScreenLock(wakeLock)) { 767 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 768 PowerManager.USER_ACTIVITY_EVENT_OTHER, 769 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 770 wakeLock.mOwnerUid); 771 } 772 } 773 774 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 775 synchronized (mLock) { 776 int index = findWakeLockIndexLocked(lock); 777 if (index < 0) { 778 if (DEBUG_SPEW) { 779 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 780 + " [not found], ws=" + ws); 781 } 782 throw new IllegalArgumentException("Wake lock not active"); 783 } 784 785 WakeLock wakeLock = mWakeLocks.get(index); 786 if (DEBUG_SPEW) { 787 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 788 + " [" + wakeLock.mTag + "], ws=" + ws); 789 } 790 791 if (!wakeLock.hasSameWorkSource(ws)) { 792 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 793 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 794 ws, historyTag); 795 wakeLock.mHistoryTag = historyTag; 796 wakeLock.updateWorkSource(ws); 797 } 798 } 799 } 800 801 private int findWakeLockIndexLocked(IBinder lock) { 802 final int count = mWakeLocks.size(); 803 for (int i = 0; i < count; i++) { 804 if (mWakeLocks.get(i).mLock == lock) { 805 return i; 806 } 807 } 808 return -1; 809 } 810 811 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 812 if (mSystemReady) { 813 wakeLock.mNotifiedAcquired = true; 814 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 815 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 816 wakeLock.mHistoryTag); 817 } 818 } 819 820 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 821 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 822 if (mSystemReady && wakeLock.mNotifiedAcquired) { 823 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 824 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 825 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 826 } 827 } 828 829 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 830 if (mSystemReady && wakeLock.mNotifiedAcquired) { 831 wakeLock.mNotifiedAcquired = false; 832 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 833 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 834 wakeLock.mWorkSource, wakeLock.mHistoryTag); 835 } 836 } 837 838 @SuppressWarnings("deprecation") 839 private boolean isWakeLockLevelSupportedInternal(int level) { 840 synchronized (mLock) { 841 switch (level) { 842 case PowerManager.PARTIAL_WAKE_LOCK: 843 case PowerManager.SCREEN_DIM_WAKE_LOCK: 844 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 845 case PowerManager.FULL_WAKE_LOCK: 846 case PowerManager.DOZE_WAKE_LOCK: 847 return true; 848 849 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 850 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 851 852 default: 853 return false; 854 } 855 } 856 } 857 858 // Called from native code. 859 private void userActivityFromNative(long eventTime, int event, int flags) { 860 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 861 } 862 863 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 864 synchronized (mLock) { 865 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 866 updatePowerStateLocked(); 867 } 868 } 869 } 870 871 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 872 if (DEBUG_SPEW) { 873 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 874 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 875 + ", uid=" + uid); 876 } 877 878 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 879 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 880 || !mBootCompleted || !mSystemReady) { 881 return false; 882 } 883 884 mNotifier.onUserActivity(event, uid); 885 886 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 887 if (eventTime > mLastUserActivityTimeNoChangeLights 888 && eventTime > mLastUserActivityTime) { 889 mLastUserActivityTimeNoChangeLights = eventTime; 890 mDirty |= DIRTY_USER_ACTIVITY; 891 return true; 892 } 893 } else { 894 if (eventTime > mLastUserActivityTime) { 895 mLastUserActivityTime = eventTime; 896 mDirty |= DIRTY_USER_ACTIVITY; 897 return true; 898 } 899 } 900 return false; 901 } 902 903 private void wakeUpInternal(long eventTime) { 904 synchronized (mLock) { 905 if (wakeUpNoUpdateLocked(eventTime)) { 906 updatePowerStateLocked(); 907 } 908 } 909 } 910 911 private boolean wakeUpNoUpdateLocked(long eventTime) { 912 if (DEBUG_SPEW) { 913 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 914 } 915 916 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 917 || !mBootCompleted || !mSystemReady) { 918 return false; 919 } 920 921 switch (mWakefulness) { 922 case WAKEFULNESS_ASLEEP: 923 Slog.i(TAG, "Waking up from sleep..."); 924 break; 925 case WAKEFULNESS_DREAMING: 926 Slog.i(TAG, "Waking up from dream..."); 927 break; 928 case WAKEFULNESS_DOZING: 929 Slog.i(TAG, "Waking up from dozing..."); 930 break; 931 } 932 933 mLastWakeTime = eventTime; 934 mDirty |= DIRTY_WAKEFULNESS; 935 mWakefulness = WAKEFULNESS_AWAKE; 936 setInteractiveStateLocked(true, 0); 937 938 userActivityNoUpdateLocked( 939 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 940 return true; 941 } 942 943 private void goToSleepInternal(long eventTime, int reason) { 944 synchronized (mLock) { 945 if (goToSleepNoUpdateLocked(eventTime, reason)) { 946 updatePowerStateLocked(); 947 } 948 } 949 } 950 951 // This method is called goToSleep for historical reasons but we actually start 952 // dozing before really going to sleep. 953 @SuppressWarnings("deprecation") 954 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 955 if (DEBUG_SPEW) { 956 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 957 } 958 959 if (eventTime < mLastWakeTime 960 || mWakefulness == WAKEFULNESS_ASLEEP 961 || mWakefulness == WAKEFULNESS_DOZING 962 || !mBootCompleted || !mSystemReady) { 963 return false; 964 } 965 966 switch (reason) { 967 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 968 Slog.i(TAG, "Going to sleep due to device administration policy..."); 969 break; 970 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 971 Slog.i(TAG, "Going to sleep due to screen timeout..."); 972 break; 973 default: 974 Slog.i(TAG, "Going to sleep by user request..."); 975 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 976 break; 977 } 978 979 mLastSleepTime = eventTime; 980 mDirty |= DIRTY_WAKEFULNESS; 981 mWakefulness = WAKEFULNESS_DOZING; 982 mSandmanSummoned = true; 983 setInteractiveStateLocked(false, reason); 984 985 // Report the number of wake locks that will be cleared by going to sleep. 986 int numWakeLocksCleared = 0; 987 final int numWakeLocks = mWakeLocks.size(); 988 for (int i = 0; i < numWakeLocks; i++) { 989 final WakeLock wakeLock = mWakeLocks.get(i); 990 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 991 case PowerManager.FULL_WAKE_LOCK: 992 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 993 case PowerManager.SCREEN_DIM_WAKE_LOCK: 994 numWakeLocksCleared += 1; 995 break; 996 } 997 } 998 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 999 return true; 1000 } 1001 1002 private void napInternal(long eventTime) { 1003 synchronized (mLock) { 1004 if (napNoUpdateLocked(eventTime)) { 1005 updatePowerStateLocked(); 1006 } 1007 } 1008 } 1009 1010 private boolean napNoUpdateLocked(long eventTime) { 1011 if (DEBUG_SPEW) { 1012 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 1013 } 1014 1015 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1016 || !mBootCompleted || !mSystemReady) { 1017 return false; 1018 } 1019 1020 Slog.i(TAG, "Nap time..."); 1021 1022 mDirty |= DIRTY_WAKEFULNESS; 1023 mWakefulness = WAKEFULNESS_DREAMING; 1024 mSandmanSummoned = true; 1025 setInteractiveStateLocked(true, 0); 1026 return true; 1027 } 1028 1029 // Done dozing, drop everything and go to sleep. 1030 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1031 if (DEBUG_SPEW) { 1032 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1033 } 1034 1035 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1036 || !mBootCompleted || !mSystemReady) { 1037 return false; 1038 } 1039 1040 Slog.i(TAG, "Sleeping..."); 1041 1042 mDirty |= DIRTY_WAKEFULNESS; 1043 mWakefulness = WAKEFULNESS_ASLEEP; 1044 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1045 return true; 1046 } 1047 1048 private void setInteractiveStateLocked(boolean interactive, int reason) { 1049 if (mInteractive != interactive) { 1050 finishInteractiveStateChangeLocked(); 1051 1052 mInteractive = interactive; 1053 mInteractiveChanging = true; 1054 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1055 } 1056 } 1057 1058 private void finishInteractiveStateChangeLocked() { 1059 if (mInteractiveChanging) { 1060 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1061 mInteractiveChanging = false; 1062 } 1063 } 1064 1065 /** 1066 * Updates the global power state based on dirty bits recorded in mDirty. 1067 * 1068 * This is the main function that performs power state transitions. 1069 * We centralize them here so that we can recompute the power state completely 1070 * each time something important changes, and ensure that we do it the same 1071 * way each time. The point is to gather all of the transition logic here. 1072 */ 1073 private void updatePowerStateLocked() { 1074 if (!mSystemReady || mDirty == 0) { 1075 return; 1076 } 1077 if (!Thread.holdsLock(mLock)) { 1078 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1079 } 1080 1081 // Phase 0: Basic state updates. 1082 updateIsPoweredLocked(mDirty); 1083 updateStayOnLocked(mDirty); 1084 1085 // Phase 1: Update wakefulness. 1086 // Loop because the wake lock and user activity computations are influenced 1087 // by changes in wakefulness. 1088 final long now = SystemClock.uptimeMillis(); 1089 int dirtyPhase2 = 0; 1090 for (;;) { 1091 int dirtyPhase1 = mDirty; 1092 dirtyPhase2 |= dirtyPhase1; 1093 mDirty = 0; 1094 1095 updateWakeLockSummaryLocked(dirtyPhase1); 1096 updateUserActivitySummaryLocked(now, dirtyPhase1); 1097 if (!updateWakefulnessLocked(dirtyPhase1)) { 1098 break; 1099 } 1100 } 1101 1102 // Phase 2: Update dreams and display power state. 1103 updateDreamLocked(dirtyPhase2); 1104 updateDisplayPowerStateLocked(dirtyPhase2); 1105 1106 // Phase 3: Send notifications, if needed. 1107 if (mDisplayReady) { 1108 finishInteractiveStateChangeLocked(); 1109 } 1110 1111 // Phase 4: Update suspend blocker. 1112 // Because we might release the last suspend blocker here, we need to make sure 1113 // we finished everything else first! 1114 updateSuspendBlockerLocked(); 1115 } 1116 1117 /** 1118 * Updates the value of mIsPowered. 1119 * Sets DIRTY_IS_POWERED if a change occurred. 1120 */ 1121 private void updateIsPoweredLocked(int dirty) { 1122 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1123 final boolean wasPowered = mIsPowered; 1124 final int oldPlugType = mPlugType; 1125 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1126 mPlugType = mBatteryService.getPlugType(); 1127 mBatteryLevel = mBatteryService.getBatteryLevel(); 1128 1129 if (DEBUG_SPEW) { 1130 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1131 + ", mIsPowered=" + mIsPowered 1132 + ", oldPlugType=" + oldPlugType 1133 + ", mPlugType=" + mPlugType 1134 + ", mBatteryLevel=" + mBatteryLevel); 1135 } 1136 1137 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1138 mDirty |= DIRTY_IS_POWERED; 1139 1140 // Update wireless dock detection state. 1141 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1142 mIsPowered, mPlugType, mBatteryLevel); 1143 1144 // Treat plugging and unplugging the devices as a user activity. 1145 // Users find it disconcerting when they plug or unplug the device 1146 // and it shuts off right away. 1147 // Some devices also wake the device when plugged or unplugged because 1148 // they don't have a charging LED. 1149 final long now = SystemClock.uptimeMillis(); 1150 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1151 dockedOnWirelessCharger)) { 1152 wakeUpNoUpdateLocked(now); 1153 } 1154 userActivityNoUpdateLocked( 1155 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1156 1157 // Tell the notifier whether wireless charging has started so that 1158 // it can provide feedback to the user. 1159 if (dockedOnWirelessCharger) { 1160 mNotifier.onWirelessChargingStarted(); 1161 } 1162 } 1163 } 1164 } 1165 1166 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1167 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1168 // Don't wake when powered unless configured to do so. 1169 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1170 return false; 1171 } 1172 1173 // Don't wake when undocked from wireless charger. 1174 // See WirelessChargerDetector for justification. 1175 if (wasPowered && !mIsPowered 1176 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1177 return false; 1178 } 1179 1180 // Don't wake when docked on wireless charger unless we are certain of it. 1181 // See WirelessChargerDetector for justification. 1182 if (!wasPowered && mIsPowered 1183 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1184 && !dockedOnWirelessCharger) { 1185 return false; 1186 } 1187 1188 // If already dreaming and becoming powered, then don't wake. 1189 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1190 return false; 1191 } 1192 1193 // Otherwise wake up! 1194 return true; 1195 } 1196 1197 /** 1198 * Updates the value of mStayOn. 1199 * Sets DIRTY_STAY_ON if a change occurred. 1200 */ 1201 private void updateStayOnLocked(int dirty) { 1202 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1203 final boolean wasStayOn = mStayOn; 1204 if (mStayOnWhilePluggedInSetting != 0 1205 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1206 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1207 } else { 1208 mStayOn = false; 1209 } 1210 1211 if (mStayOn != wasStayOn) { 1212 mDirty |= DIRTY_STAY_ON; 1213 } 1214 } 1215 } 1216 1217 /** 1218 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1219 * Note that most wake-locks are ignored when the system is asleep. 1220 * 1221 * This function must have no other side-effects. 1222 */ 1223 @SuppressWarnings("deprecation") 1224 private void updateWakeLockSummaryLocked(int dirty) { 1225 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1226 mWakeLockSummary = 0; 1227 1228 final int numWakeLocks = mWakeLocks.size(); 1229 for (int i = 0; i < numWakeLocks; i++) { 1230 final WakeLock wakeLock = mWakeLocks.get(i); 1231 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1232 case PowerManager.PARTIAL_WAKE_LOCK: 1233 mWakeLockSummary |= WAKE_LOCK_CPU; 1234 break; 1235 case PowerManager.FULL_WAKE_LOCK: 1236 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1237 break; 1238 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1239 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1240 break; 1241 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1242 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1243 break; 1244 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1245 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1246 break; 1247 case PowerManager.DOZE_WAKE_LOCK: 1248 mWakeLockSummary |= WAKE_LOCK_DOZE; 1249 break; 1250 } 1251 } 1252 1253 // Cancel wake locks that make no sense based on the current state. 1254 if (mWakefulness != WAKEFULNESS_DOZING) { 1255 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1256 } 1257 if (mWakefulness == WAKEFULNESS_ASLEEP 1258 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1259 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1260 | WAKE_LOCK_BUTTON_BRIGHT); 1261 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1262 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1263 } 1264 } 1265 1266 // Infer implied wake locks where necessary based on the current state. 1267 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1268 if (mWakefulness == WAKEFULNESS_AWAKE) { 1269 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1270 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1271 mWakeLockSummary |= WAKE_LOCK_CPU; 1272 } 1273 } 1274 1275 if (DEBUG_SPEW) { 1276 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1277 + wakefulnessToString(mWakefulness) 1278 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1279 } 1280 } 1281 } 1282 1283 /** 1284 * Updates the value of mUserActivitySummary to summarize the user requested 1285 * state of the system such as whether the screen should be bright or dim. 1286 * Note that user activity is ignored when the system is asleep. 1287 * 1288 * This function must have no other side-effects. 1289 */ 1290 private void updateUserActivitySummaryLocked(long now, int dirty) { 1291 // Update the status of the user activity timeout timer. 1292 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1293 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1294 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1295 1296 long nextTimeout = 0; 1297 if (mWakefulness == WAKEFULNESS_AWAKE 1298 || mWakefulness == WAKEFULNESS_DREAMING 1299 || mWakefulness == WAKEFULNESS_DOZING) { 1300 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1301 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1302 1303 mUserActivitySummary = 0; 1304 if (mLastUserActivityTime >= mLastWakeTime) { 1305 nextTimeout = mLastUserActivityTime 1306 + screenOffTimeout - screenDimDuration; 1307 if (now < nextTimeout) { 1308 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1309 } else { 1310 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1311 if (now < nextTimeout) { 1312 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1313 } 1314 } 1315 } 1316 if (mUserActivitySummary == 0 1317 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1318 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1319 if (now < nextTimeout 1320 && mDisplayPowerRequest.wantScreenOnNormal()) { 1321 mUserActivitySummary = mDisplayPowerRequest.screenState 1322 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1323 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1324 } 1325 } 1326 if (mUserActivitySummary != 0) { 1327 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1328 msg.setAsynchronous(true); 1329 mHandler.sendMessageAtTime(msg, nextTimeout); 1330 } 1331 } else { 1332 mUserActivitySummary = 0; 1333 } 1334 1335 if (DEBUG_SPEW) { 1336 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1337 + wakefulnessToString(mWakefulness) 1338 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1339 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1340 } 1341 } 1342 } 1343 1344 /** 1345 * Called when a user activity timeout has occurred. 1346 * Simply indicates that something about user activity has changed so that the new 1347 * state can be recomputed when the power state is updated. 1348 * 1349 * This function must have no other side-effects besides setting the dirty 1350 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1351 */ 1352 private void handleUserActivityTimeout() { // runs on handler thread 1353 synchronized (mLock) { 1354 if (DEBUG_SPEW) { 1355 Slog.d(TAG, "handleUserActivityTimeout"); 1356 } 1357 1358 mDirty |= DIRTY_USER_ACTIVITY; 1359 updatePowerStateLocked(); 1360 } 1361 } 1362 1363 private int getScreenOffTimeoutLocked() { 1364 int timeout = mScreenOffTimeoutSetting; 1365 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1366 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1367 } 1368 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1369 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1370 } 1371 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1372 } 1373 1374 private int getScreenDimDurationLocked(int screenOffTimeout) { 1375 return Math.min(SCREEN_DIM_DURATION, 1376 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1377 } 1378 1379 /** 1380 * Updates the wakefulness of the device. 1381 * 1382 * This is the function that decides whether the device should start dreaming 1383 * based on the current wake locks and user activity state. It may modify mDirty 1384 * if the wakefulness changes. 1385 * 1386 * Returns true if the wakefulness changed and we need to restart power state calculation. 1387 */ 1388 private boolean updateWakefulnessLocked(int dirty) { 1389 boolean changed = false; 1390 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1391 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1392 | DIRTY_DOCK_STATE)) != 0) { 1393 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1394 if (DEBUG_SPEW) { 1395 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1396 } 1397 final long time = SystemClock.uptimeMillis(); 1398 if (shouldNapAtBedTimeLocked()) { 1399 changed = napNoUpdateLocked(time); 1400 } else { 1401 changed = goToSleepNoUpdateLocked(time, 1402 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1403 } 1404 } 1405 } 1406 return changed; 1407 } 1408 1409 /** 1410 * Returns true if the device should automatically nap and start dreaming when the user 1411 * activity timeout has expired and it's bedtime. 1412 */ 1413 private boolean shouldNapAtBedTimeLocked() { 1414 return mDreamsActivateOnSleepSetting 1415 || (mDreamsActivateOnDockSetting 1416 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1417 } 1418 1419 /** 1420 * Returns true if the device should go to sleep now. 1421 * Also used when exiting a dream to determine whether we should go back 1422 * to being fully awake or else go to sleep for good. 1423 */ 1424 private boolean isItBedTimeYetLocked() { 1425 return mBootCompleted && !isBeingKeptAwakeLocked(); 1426 } 1427 1428 /** 1429 * Returns true if the device is being kept awake by a wake lock, user activity 1430 * or the stay on while powered setting. We also keep the phone awake when 1431 * the proximity sensor returns a positive result so that the device does not 1432 * lock while in a phone call. This function only controls whether the device 1433 * will go to sleep or dream which is independent of whether it will be allowed 1434 * to suspend. 1435 */ 1436 private boolean isBeingKeptAwakeLocked() { 1437 return mStayOn 1438 || mProximityPositive 1439 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1440 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1441 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1442 } 1443 1444 /** 1445 * Determines whether to post a message to the sandman to update the dream state. 1446 */ 1447 private void updateDreamLocked(int dirty) { 1448 if ((dirty & (DIRTY_WAKEFULNESS 1449 | DIRTY_USER_ACTIVITY 1450 | DIRTY_WAKE_LOCKS 1451 | DIRTY_BOOT_COMPLETED 1452 | DIRTY_SETTINGS 1453 | DIRTY_IS_POWERED 1454 | DIRTY_STAY_ON 1455 | DIRTY_PROXIMITY_POSITIVE 1456 | DIRTY_BATTERY_STATE)) != 0) { 1457 scheduleSandmanLocked(); 1458 } 1459 } 1460 1461 private void scheduleSandmanLocked() { 1462 if (!mSandmanScheduled) { 1463 mSandmanScheduled = true; 1464 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1465 msg.setAsynchronous(true); 1466 mHandler.sendMessage(msg); 1467 } 1468 } 1469 1470 /** 1471 * Called when the device enters or exits a dreaming or dozing state. 1472 * 1473 * We do this asynchronously because we must call out of the power manager to start 1474 * the dream and we don't want to hold our lock while doing so. There is a risk that 1475 * the device will wake or go to sleep in the meantime so we have to handle that case. 1476 */ 1477 private void handleSandman() { // runs on handler thread 1478 // Handle preconditions. 1479 final boolean startDreaming; 1480 final int wakefulness; 1481 synchronized (mLock) { 1482 mSandmanScheduled = false; 1483 wakefulness = mWakefulness; 1484 if (mSandmanSummoned) { 1485 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1486 || wakefulness == WAKEFULNESS_DOZING); 1487 mSandmanSummoned = false; 1488 } else { 1489 startDreaming = false; 1490 } 1491 } 1492 1493 // Start dreaming if needed. 1494 // We only control the dream on the handler thread, so we don't need to worry about 1495 // concurrent attempts to start or stop the dream. 1496 final boolean isDreaming; 1497 if (mDreamManager != null) { 1498 // Restart the dream whenever the sandman is summoned. 1499 if (startDreaming) { 1500 mDreamManager.stopDream(); 1501 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1502 } 1503 isDreaming = mDreamManager.isDreaming(); 1504 } else { 1505 isDreaming = false; 1506 } 1507 1508 // Update dream state. 1509 synchronized (mLock) { 1510 // Remember the initial battery level when the dream started. 1511 if (startDreaming && isDreaming) { 1512 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1513 if (wakefulness == WAKEFULNESS_DOZING) { 1514 Slog.i(TAG, "Dozing..."); 1515 } else { 1516 Slog.i(TAG, "Dreaming..."); 1517 } 1518 } 1519 1520 // If preconditions changed, wait for the next iteration to determine 1521 // whether the dream should continue (or be restarted). 1522 if (mSandmanSummoned || mWakefulness != wakefulness) { 1523 return; // wait for next cycle 1524 } 1525 1526 // Determine whether the dream should continue. 1527 if (wakefulness == WAKEFULNESS_DREAMING) { 1528 if (isDreaming && canDreamLocked()) { 1529 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1530 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1531 - mDreamsBatteryLevelDrainCutoffConfig 1532 && !isBeingKeptAwakeLocked()) { 1533 // If the user activity timeout expired and the battery appears 1534 // to be draining faster than it is charging then stop dreaming 1535 // and go to sleep. 1536 Slog.i(TAG, "Stopping dream because the battery appears to " 1537 + "be draining faster than it is charging. " 1538 + "Battery level when dream started: " 1539 + mBatteryLevelWhenDreamStarted + "%. " 1540 + "Battery level now: " + mBatteryLevel + "%."); 1541 } else { 1542 return; // continue dreaming 1543 } 1544 } 1545 1546 // Dream has ended or will be stopped. Update the power state. 1547 if (isItBedTimeYetLocked()) { 1548 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1549 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1550 updatePowerStateLocked(); 1551 } else { 1552 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1553 updatePowerStateLocked(); 1554 } 1555 } else if (wakefulness == WAKEFULNESS_DOZING) { 1556 if (isDreaming) { 1557 return; // continue dozing 1558 } 1559 1560 // Doze has ended or will be stopped. Update the power state. 1561 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1562 updatePowerStateLocked(); 1563 } 1564 } 1565 1566 // Stop dream. 1567 if (isDreaming) { 1568 mDreamManager.stopDream(); 1569 } 1570 } 1571 1572 /** 1573 * Returns true if the device is allowed to dream in its current state. 1574 * This function is not called when dozing. 1575 */ 1576 private boolean canDreamLocked() { 1577 if (mWakefulness != WAKEFULNESS_DREAMING 1578 || !mDreamsSupportedConfig 1579 || !mDreamsEnabledSetting 1580 || !mDisplayPowerRequest.wantScreenOnNormal() 1581 || !mBootCompleted) { 1582 return false; 1583 } 1584 if (!isBeingKeptAwakeLocked()) { 1585 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1586 return false; 1587 } 1588 if (!mIsPowered 1589 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1590 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1591 return false; 1592 } 1593 if (mIsPowered 1594 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1595 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1596 return false; 1597 } 1598 } 1599 return true; 1600 } 1601 1602 private void handleScreenOnBlockerReleased() { 1603 synchronized (mLock) { 1604 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1605 updatePowerStateLocked(); 1606 } 1607 } 1608 1609 /** 1610 * Updates the display power state asynchronously. 1611 * When the update is finished, mDisplayReady will be set to true. The display 1612 * controller posts a message to tell us when the actual display power state 1613 * has been updated so we come back here to double-check and finish up. 1614 * 1615 * This function recalculates the display power state each time. 1616 */ 1617 private void updateDisplayPowerStateLocked(int dirty) { 1618 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1619 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1620 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1621 final int newScreenState = getDesiredScreenPowerStateLocked(); 1622 mDisplayPowerRequest.screenState = newScreenState; 1623 1624 int screenBrightness = mScreenBrightnessSettingDefault; 1625 float screenAutoBrightnessAdjustment = 0.0f; 1626 boolean autoBrightness = (mScreenBrightnessModeSetting == 1627 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1628 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1629 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1630 autoBrightness = false; 1631 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1632 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1633 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1634 screenBrightness = mScreenBrightnessSetting; 1635 } 1636 if (autoBrightness) { 1637 screenBrightness = mScreenBrightnessSettingDefault; 1638 if (isValidAutoBrightnessAdjustment( 1639 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1640 screenAutoBrightnessAdjustment = 1641 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1642 } else if (isValidAutoBrightnessAdjustment( 1643 mScreenAutoBrightnessAdjustmentSetting)) { 1644 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1645 } 1646 } 1647 screenBrightness = Math.max(Math.min(screenBrightness, 1648 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1649 screenAutoBrightnessAdjustment = Math.max(Math.min( 1650 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1651 mDisplayPowerRequest.screenBrightness = screenBrightness; 1652 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1653 screenAutoBrightnessAdjustment; 1654 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1655 1656 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1657 1658 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1659 1660 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1661 1662 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1663 mRequestWaitForNegativeProximity); 1664 mRequestWaitForNegativeProximity = false; 1665 1666 if (DEBUG_SPEW) { 1667 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1668 + ", newScreenState=" + newScreenState 1669 + ", mWakefulness=" + mWakefulness 1670 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1671 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1672 + ", mBootCompleted=" + mBootCompleted); 1673 } 1674 } 1675 } 1676 1677 private static boolean isValidBrightness(int value) { 1678 return value >= 0 && value <= 255; 1679 } 1680 1681 private static boolean isValidAutoBrightnessAdjustment(float value) { 1682 // Handles NaN by always returning false. 1683 return value >= -1.0f && value <= 1.0f; 1684 } 1685 1686 private int getDesiredScreenPowerStateLocked() { 1687 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1688 return DisplayPowerRequest.SCREEN_STATE_OFF; 1689 } 1690 1691 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1692 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1693 } 1694 1695 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1696 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1697 || !mBootCompleted) { 1698 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1699 } 1700 1701 return DisplayPowerRequest.SCREEN_STATE_DIM; 1702 } 1703 1704 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1705 new DisplayManagerInternal.DisplayPowerCallbacks() { 1706 private int mDisplayState = Display.STATE_UNKNOWN; 1707 1708 @Override 1709 public void onStateChanged() { 1710 synchronized (mLock) { 1711 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1712 updatePowerStateLocked(); 1713 } 1714 } 1715 1716 @Override 1717 public void onProximityPositive() { 1718 synchronized (mLock) { 1719 mProximityPositive = true; 1720 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1721 updatePowerStateLocked(); 1722 } 1723 } 1724 1725 @Override 1726 public void onProximityNegative() { 1727 synchronized (mLock) { 1728 mProximityPositive = false; 1729 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1730 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1731 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1732 updatePowerStateLocked(); 1733 } 1734 } 1735 1736 @Override 1737 public void onDisplayStateChange(int state) { 1738 // This method is only needed to support legacy display blanking behavior 1739 // where the display's power state is coupled to suspend or to the power HAL. 1740 // The order of operations matters here. 1741 synchronized (mLock) { 1742 if (mDisplayState != state) { 1743 mDisplayState = state; 1744 if (state == Display.STATE_OFF) { 1745 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1746 setHalInteractiveModeLocked(false); 1747 } 1748 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1749 setHalAutoSuspendModeLocked(true); 1750 } 1751 } else { 1752 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1753 setHalAutoSuspendModeLocked(false); 1754 } 1755 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1756 setHalInteractiveModeLocked(true); 1757 } 1758 } 1759 } 1760 } 1761 } 1762 1763 @Override 1764 public void acquireSuspendBlocker() { 1765 mDisplaySuspendBlocker.acquire(); 1766 } 1767 1768 @Override 1769 public void releaseSuspendBlocker() { 1770 mDisplaySuspendBlocker.release(); 1771 } 1772 1773 @Override 1774 public String toString() { 1775 synchronized (this) { 1776 return "state=" + Display.stateToString(mDisplayState); 1777 } 1778 } 1779 }; 1780 1781 private boolean shouldUseProximitySensorLocked() { 1782 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1783 } 1784 1785 /** 1786 * Updates the suspend blocker that keeps the CPU alive. 1787 * 1788 * This function must have no other side-effects. 1789 */ 1790 private void updateSuspendBlockerLocked() { 1791 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1792 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1793 final boolean autoSuspend = !needDisplaySuspendBlocker; 1794 1795 // Disable auto-suspend if needed. 1796 if (!autoSuspend) { 1797 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1798 setHalAutoSuspendModeLocked(false); 1799 } 1800 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1801 setHalInteractiveModeLocked(true); 1802 } 1803 } 1804 1805 // First acquire suspend blockers if needed. 1806 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1807 mWakeLockSuspendBlocker.acquire(); 1808 mHoldingWakeLockSuspendBlocker = true; 1809 } 1810 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1811 mDisplaySuspendBlocker.acquire(); 1812 mHoldingDisplaySuspendBlocker = true; 1813 } 1814 1815 // Then release suspend blockers if needed. 1816 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1817 mWakeLockSuspendBlocker.release(); 1818 mHoldingWakeLockSuspendBlocker = false; 1819 } 1820 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1821 mDisplaySuspendBlocker.release(); 1822 mHoldingDisplaySuspendBlocker = false; 1823 } 1824 1825 // Enable auto-suspend if needed. 1826 if (autoSuspend) { 1827 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1828 setHalInteractiveModeLocked(false); 1829 } 1830 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1831 setHalAutoSuspendModeLocked(true); 1832 } 1833 } 1834 } 1835 1836 /** 1837 * Return true if we must keep a suspend blocker active on behalf of the display. 1838 * We do so if the screen is on or is in transition between states. 1839 */ 1840 private boolean needDisplaySuspendBlockerLocked() { 1841 if (!mDisplayReady) { 1842 return true; 1843 } 1844 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1845 // If we asked for the screen to be on but it is off due to the proximity 1846 // sensor then we may suspend but only if the configuration allows it. 1847 // On some hardware it may not be safe to suspend because the proximity 1848 // sensor may not be correctly configured as a wake-up source. 1849 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1850 || !mSuspendWhenScreenOffDueToProximityConfig) { 1851 return true; 1852 } 1853 } 1854 // Let the system suspend if the screen is off or dozing. 1855 return false; 1856 } 1857 1858 private void setHalAutoSuspendModeLocked(boolean enable) { 1859 if (enable != mHalAutoSuspendModeEnabled) { 1860 if (DEBUG) { 1861 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1862 } 1863 mHalAutoSuspendModeEnabled = enable; 1864 nativeSetAutoSuspend(enable); 1865 } 1866 } 1867 1868 private void setHalInteractiveModeLocked(boolean enable) { 1869 if (enable != mHalInteractiveModeEnabled) { 1870 if (DEBUG) { 1871 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1872 } 1873 mHalInteractiveModeEnabled = enable; 1874 nativeSetInteractive(enable); 1875 } 1876 } 1877 1878 private boolean isInteractiveInternal() { 1879 synchronized (mLock) { 1880 return mInteractive; 1881 } 1882 } 1883 1884 private void handleBatteryStateChangedLocked() { 1885 mDirty |= DIRTY_BATTERY_STATE; 1886 updatePowerStateLocked(); 1887 } 1888 1889 private void startWatchingForBootAnimationFinished() { 1890 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1891 } 1892 1893 private void checkIfBootAnimationFinished() { 1894 if (DEBUG) { 1895 Slog.d(TAG, "Check if boot animation finished..."); 1896 } 1897 1898 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1899 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1900 BOOT_ANIMATION_POLL_INTERVAL); 1901 return; 1902 } 1903 1904 synchronized (mLock) { 1905 if (!mBootCompleted) { 1906 Slog.i(TAG, "Boot animation finished."); 1907 handleBootCompletedLocked(); 1908 } 1909 } 1910 } 1911 1912 private void handleBootCompletedLocked() { 1913 final long now = SystemClock.uptimeMillis(); 1914 mBootCompleted = true; 1915 mDirty |= DIRTY_BOOT_COMPLETED; 1916 userActivityNoUpdateLocked( 1917 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1918 updatePowerStateLocked(); 1919 } 1920 1921 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1922 final String reason, boolean wait) { 1923 if (mHandler == null || !mSystemReady) { 1924 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1925 } 1926 1927 Runnable runnable = new Runnable() { 1928 @Override 1929 public void run() { 1930 synchronized (this) { 1931 if (shutdown) { 1932 ShutdownThread.shutdown(mContext, confirm); 1933 } else { 1934 ShutdownThread.reboot(mContext, reason, confirm); 1935 } 1936 } 1937 } 1938 }; 1939 1940 // ShutdownThread must run on a looper capable of displaying the UI. 1941 Message msg = Message.obtain(mHandler, runnable); 1942 msg.setAsynchronous(true); 1943 mHandler.sendMessage(msg); 1944 1945 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1946 if (wait) { 1947 synchronized (runnable) { 1948 while (true) { 1949 try { 1950 runnable.wait(); 1951 } catch (InterruptedException e) { 1952 } 1953 } 1954 } 1955 } 1956 } 1957 1958 private void crashInternal(final String message) { 1959 Thread t = new Thread("PowerManagerService.crash()") { 1960 @Override 1961 public void run() { 1962 throw new RuntimeException(message); 1963 } 1964 }; 1965 try { 1966 t.start(); 1967 t.join(); 1968 } catch (InterruptedException e) { 1969 Log.wtf(TAG, e); 1970 } 1971 } 1972 1973 private void setStayOnSettingInternal(int val) { 1974 Settings.Global.putInt(mContext.getContentResolver(), 1975 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1976 } 1977 1978 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1979 synchronized (mLock) { 1980 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1981 mDirty |= DIRTY_SETTINGS; 1982 updatePowerStateLocked(); 1983 } 1984 } 1985 1986 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1987 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1988 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1989 } 1990 1991 private void setAttentionLightInternal(boolean on, int color) { 1992 Light light; 1993 synchronized (mLock) { 1994 if (!mSystemReady) { 1995 return; 1996 } 1997 light = mAttentionLight; 1998 } 1999 2000 // Control light outside of lock. 2001 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2002 } 2003 2004 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2005 synchronized (mLock) { 2006 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2007 mScreenBrightnessOverrideFromWindowManager = brightness; 2008 mDirty |= DIRTY_SETTINGS; 2009 updatePowerStateLocked(); 2010 } 2011 } 2012 } 2013 2014 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2015 synchronized (mLock) { 2016 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2017 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2018 mDirty |= DIRTY_SETTINGS; 2019 updatePowerStateLocked(); 2020 } 2021 } 2022 } 2023 2024 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2025 synchronized (mLock) { 2026 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2027 mTemporaryScreenBrightnessSettingOverride = brightness; 2028 mDirty |= DIRTY_SETTINGS; 2029 updatePowerStateLocked(); 2030 } 2031 } 2032 } 2033 2034 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2035 synchronized (mLock) { 2036 // Note: This condition handles NaN because NaN is not equal to any other 2037 // value, including itself. 2038 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2039 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2040 mDirty |= DIRTY_SETTINGS; 2041 updatePowerStateLocked(); 2042 } 2043 } 2044 } 2045 2046 private void powerHintInternal(int hintId, int data) { 2047 nativeSendPowerHint(hintId, data); 2048 } 2049 2050 /** 2051 * Low-level function turn the device off immediately, without trying 2052 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2053 */ 2054 public static void lowLevelShutdown() { 2055 SystemProperties.set("sys.powerctl", "shutdown"); 2056 } 2057 2058 /** 2059 * Low-level function to reboot the device. On success, this 2060 * function doesn't return. If more than 20 seconds passes from 2061 * the time a reboot is requested (120 seconds for reboot to 2062 * recovery), this method returns. 2063 * 2064 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2065 */ 2066 public static void lowLevelReboot(String reason) { 2067 if (reason == null) { 2068 reason = ""; 2069 } 2070 long duration; 2071 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2072 // If we are rebooting to go into recovery, instead of 2073 // setting sys.powerctl directly we'll start the 2074 // pre-recovery service which will do some preparation for 2075 // recovery and then reboot for us. 2076 // 2077 // This preparation can take more than 20 seconds if 2078 // there's a very large update package, so lengthen the 2079 // timeout. 2080 SystemProperties.set("ctl.start", "pre-recovery"); 2081 duration = 120 * 1000L; 2082 } else { 2083 SystemProperties.set("sys.powerctl", "reboot," + reason); 2084 duration = 20 * 1000L; 2085 } 2086 try { 2087 Thread.sleep(duration); 2088 } catch (InterruptedException e) { 2089 Thread.currentThread().interrupt(); 2090 } 2091 } 2092 2093 @Override // Watchdog.Monitor implementation 2094 public void monitor() { 2095 // Grab and release lock for watchdog monitor to detect deadlocks. 2096 synchronized (mLock) { 2097 } 2098 } 2099 2100 private void dumpInternal(PrintWriter pw) { 2101 pw.println("POWER MANAGER (dumpsys power)\n"); 2102 2103 final WirelessChargerDetector wcd; 2104 synchronized (mLock) { 2105 pw.println("Power Manager State:"); 2106 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2107 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2108 pw.println(" mInteractive=" + mInteractive); 2109 pw.println(" mIsPowered=" + mIsPowered); 2110 pw.println(" mPlugType=" + mPlugType); 2111 pw.println(" mBatteryLevel=" + mBatteryLevel); 2112 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2113 pw.println(" mDockState=" + mDockState); 2114 pw.println(" mStayOn=" + mStayOn); 2115 pw.println(" mProximityPositive=" + mProximityPositive); 2116 pw.println(" mBootCompleted=" + mBootCompleted); 2117 pw.println(" mSystemReady=" + mSystemReady); 2118 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2119 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2120 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2121 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2122 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2123 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2124 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2125 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2126 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2127 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2128 pw.println(" mLastUserActivityTimeNoChangeLights=" 2129 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2130 pw.println(" mDisplayReady=" + mDisplayReady); 2131 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2132 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2133 2134 pw.println(); 2135 pw.println("Settings and Configuration:"); 2136 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2137 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2138 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2139 + mDecoupleHalInteractiveModeFromDisplayConfig); 2140 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2141 + mWakeUpWhenPluggedOrUnpluggedConfig); 2142 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2143 + mSuspendWhenScreenOffDueToProximityConfig); 2144 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2145 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2146 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2147 + mDreamsActivatedOnSleepByDefaultConfig); 2148 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2149 + mDreamsActivatedOnDockByDefaultConfig); 2150 pw.println(" mDreamsEnabledOnBatteryConfig=" 2151 + mDreamsEnabledOnBatteryConfig); 2152 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2153 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2154 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2155 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2156 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2157 + mDreamsBatteryLevelDrainCutoffConfig); 2158 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2159 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2160 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2161 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2162 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2163 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2164 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2165 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2166 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2167 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2168 + mScreenAutoBrightnessAdjustmentSetting); 2169 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2170 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2171 + mScreenBrightnessOverrideFromWindowManager); 2172 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2173 + mUserActivityTimeoutOverrideFromWindowManager); 2174 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2175 + mTemporaryScreenBrightnessSettingOverride); 2176 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2177 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2178 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2179 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2180 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2181 2182 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2183 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2184 pw.println(); 2185 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2186 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2187 2188 pw.println(); 2189 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2190 for (WakeLock wl : mWakeLocks) { 2191 pw.println(" " + wl); 2192 } 2193 2194 pw.println(); 2195 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2196 for (SuspendBlocker sb : mSuspendBlockers) { 2197 pw.println(" " + sb); 2198 } 2199 2200 pw.println(); 2201 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2202 2203 pw.println(); 2204 pw.println("Display Power: " + mDisplayPowerCallbacks); 2205 2206 wcd = mWirelessChargerDetector; 2207 } 2208 2209 if (wcd != null) { 2210 wcd.dump(pw); 2211 } 2212 } 2213 2214 private SuspendBlocker createSuspendBlockerLocked(String name) { 2215 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2216 mSuspendBlockers.add(suspendBlocker); 2217 return suspendBlocker; 2218 } 2219 2220 private static String wakefulnessToString(int wakefulness) { 2221 switch (wakefulness) { 2222 case WAKEFULNESS_ASLEEP: 2223 return "Asleep"; 2224 case WAKEFULNESS_AWAKE: 2225 return "Awake"; 2226 case WAKEFULNESS_DREAMING: 2227 return "Dreaming"; 2228 case WAKEFULNESS_DOZING: 2229 return "Dozing"; 2230 default: 2231 return Integer.toString(wakefulness); 2232 } 2233 } 2234 2235 private static WorkSource copyWorkSource(WorkSource workSource) { 2236 return workSource != null ? new WorkSource(workSource) : null; 2237 } 2238 2239 private final class BatteryReceiver extends BroadcastReceiver { 2240 @Override 2241 public void onReceive(Context context, Intent intent) { 2242 synchronized (mLock) { 2243 handleBatteryStateChangedLocked(); 2244 } 2245 } 2246 } 2247 2248 private final class BootCompletedReceiver extends BroadcastReceiver { 2249 @Override 2250 public void onReceive(Context context, Intent intent) { 2251 // This is our early signal that the system thinks it has finished booting. 2252 // However, the boot animation may still be running for a few more seconds 2253 // since it is ultimately in charge of when it terminates. 2254 // Defer transitioning into the boot completed state until the animation exits. 2255 // We do this so that the screen does not start to dim prematurely before 2256 // the user has actually had a chance to interact with the device. 2257 startWatchingForBootAnimationFinished(); 2258 } 2259 } 2260 2261 private final class DreamReceiver extends BroadcastReceiver { 2262 @Override 2263 public void onReceive(Context context, Intent intent) { 2264 synchronized (mLock) { 2265 scheduleSandmanLocked(); 2266 } 2267 } 2268 } 2269 2270 private final class UserSwitchedReceiver extends BroadcastReceiver { 2271 @Override 2272 public void onReceive(Context context, Intent intent) { 2273 synchronized (mLock) { 2274 handleSettingsChangedLocked(); 2275 } 2276 } 2277 } 2278 2279 private final class DockReceiver extends BroadcastReceiver { 2280 @Override 2281 public void onReceive(Context context, Intent intent) { 2282 synchronized (mLock) { 2283 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2284 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2285 if (mDockState != dockState) { 2286 mDockState = dockState; 2287 mDirty |= DIRTY_DOCK_STATE; 2288 updatePowerStateLocked(); 2289 } 2290 } 2291 } 2292 } 2293 2294 private final class SettingsObserver extends ContentObserver { 2295 public SettingsObserver(Handler handler) { 2296 super(handler); 2297 } 2298 2299 @Override 2300 public void onChange(boolean selfChange, Uri uri) { 2301 synchronized (mLock) { 2302 handleSettingsChangedLocked(); 2303 } 2304 } 2305 } 2306 2307 /** 2308 * Handler for asynchronous operations performed by the power manager. 2309 */ 2310 private final class PowerManagerHandler extends Handler { 2311 public PowerManagerHandler(Looper looper) { 2312 super(looper, null, true /*async*/); 2313 } 2314 2315 @Override 2316 public void handleMessage(Message msg) { 2317 switch (msg.what) { 2318 case MSG_USER_ACTIVITY_TIMEOUT: 2319 handleUserActivityTimeout(); 2320 break; 2321 case MSG_SANDMAN: 2322 handleSandman(); 2323 break; 2324 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2325 handleScreenOnBlockerReleased(); 2326 break; 2327 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2328 checkIfBootAnimationFinished(); 2329 break; 2330 } 2331 } 2332 } 2333 2334 /** 2335 * Represents a wake lock that has been acquired by an application. 2336 */ 2337 private final class WakeLock implements IBinder.DeathRecipient { 2338 public final IBinder mLock; 2339 public int mFlags; 2340 public String mTag; 2341 public final String mPackageName; 2342 public WorkSource mWorkSource; 2343 public String mHistoryTag; 2344 public final int mOwnerUid; 2345 public final int mOwnerPid; 2346 public boolean mNotifiedAcquired; 2347 2348 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2349 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2350 mLock = lock; 2351 mFlags = flags; 2352 mTag = tag; 2353 mPackageName = packageName; 2354 mWorkSource = copyWorkSource(workSource); 2355 mHistoryTag = historyTag; 2356 mOwnerUid = ownerUid; 2357 mOwnerPid = ownerPid; 2358 } 2359 2360 @Override 2361 public void binderDied() { 2362 PowerManagerService.this.handleWakeLockDeath(this); 2363 } 2364 2365 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2366 int ownerUid, int ownerPid) { 2367 return mFlags == flags 2368 && mTag.equals(tag) 2369 && hasSameWorkSource(workSource) 2370 && mOwnerUid == ownerUid 2371 && mOwnerPid == ownerPid; 2372 } 2373 2374 public void updateProperties(int flags, String tag, String packageName, 2375 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2376 if (!mPackageName.equals(packageName)) { 2377 throw new IllegalStateException("Existing wake lock package name changed: " 2378 + mPackageName + " to " + packageName); 2379 } 2380 if (mOwnerUid != ownerUid) { 2381 throw new IllegalStateException("Existing wake lock uid changed: " 2382 + mOwnerUid + " to " + ownerUid); 2383 } 2384 if (mOwnerPid != ownerPid) { 2385 throw new IllegalStateException("Existing wake lock pid changed: " 2386 + mOwnerPid + " to " + ownerPid); 2387 } 2388 mFlags = flags; 2389 mTag = tag; 2390 updateWorkSource(workSource); 2391 mHistoryTag = historyTag; 2392 } 2393 2394 public boolean hasSameWorkSource(WorkSource workSource) { 2395 return Objects.equal(mWorkSource, workSource); 2396 } 2397 2398 public void updateWorkSource(WorkSource workSource) { 2399 mWorkSource = copyWorkSource(workSource); 2400 } 2401 2402 @Override 2403 public String toString() { 2404 return getLockLevelString() 2405 + " '" + mTag + "'" + getLockFlagsString() 2406 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2407 } 2408 2409 @SuppressWarnings("deprecation") 2410 private String getLockLevelString() { 2411 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2412 case PowerManager.FULL_WAKE_LOCK: 2413 return "FULL_WAKE_LOCK "; 2414 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2415 return "SCREEN_BRIGHT_WAKE_LOCK "; 2416 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2417 return "SCREEN_DIM_WAKE_LOCK "; 2418 case PowerManager.PARTIAL_WAKE_LOCK: 2419 return "PARTIAL_WAKE_LOCK "; 2420 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2421 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2422 case PowerManager.DOZE_WAKE_LOCK: 2423 return "DOZE_WAKE_LOCK "; 2424 default: 2425 return "??? "; 2426 } 2427 } 2428 2429 private String getLockFlagsString() { 2430 String result = ""; 2431 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2432 result += " ACQUIRE_CAUSES_WAKEUP"; 2433 } 2434 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2435 result += " ON_AFTER_RELEASE"; 2436 } 2437 return result; 2438 } 2439 } 2440 2441 private final class SuspendBlockerImpl implements SuspendBlocker { 2442 private final String mName; 2443 private int mReferenceCount; 2444 2445 public SuspendBlockerImpl(String name) { 2446 mName = name; 2447 } 2448 2449 @Override 2450 protected void finalize() throws Throwable { 2451 try { 2452 if (mReferenceCount != 0) { 2453 Log.wtf(TAG, "Suspend blocker \"" + mName 2454 + "\" was finalized without being released!"); 2455 mReferenceCount = 0; 2456 nativeReleaseSuspendBlocker(mName); 2457 } 2458 } finally { 2459 super.finalize(); 2460 } 2461 } 2462 2463 @Override 2464 public void acquire() { 2465 synchronized (this) { 2466 mReferenceCount += 1; 2467 if (mReferenceCount == 1) { 2468 if (DEBUG_SPEW) { 2469 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2470 } 2471 nativeAcquireSuspendBlocker(mName); 2472 } 2473 } 2474 } 2475 2476 @Override 2477 public void release() { 2478 synchronized (this) { 2479 mReferenceCount -= 1; 2480 if (mReferenceCount == 0) { 2481 if (DEBUG_SPEW) { 2482 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2483 } 2484 nativeReleaseSuspendBlocker(mName); 2485 } else if (mReferenceCount < 0) { 2486 Log.wtf(TAG, "Suspend blocker \"" + mName 2487 + "\" was released without being acquired!", new Throwable()); 2488 mReferenceCount = 0; 2489 } 2490 } 2491 } 2492 2493 @Override 2494 public String toString() { 2495 synchronized (this) { 2496 return mName + ": ref count=" + mReferenceCount; 2497 } 2498 } 2499 } 2500 2501 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2502 private int mNestCount; 2503 2504 public boolean isHeld() { 2505 synchronized (this) { 2506 return mNestCount != 0; 2507 } 2508 } 2509 2510 @Override 2511 public void acquire() { 2512 synchronized (this) { 2513 mNestCount += 1; 2514 if (DEBUG) { 2515 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2516 } 2517 } 2518 } 2519 2520 @Override 2521 public void release() { 2522 synchronized (this) { 2523 mNestCount -= 1; 2524 if (mNestCount < 0) { 2525 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2526 new Throwable()); 2527 mNestCount = 0; 2528 } 2529 if (mNestCount == 0) { 2530 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2531 } 2532 if (DEBUG) { 2533 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2534 } 2535 } 2536 } 2537 2538 @Override 2539 public String toString() { 2540 synchronized (this) { 2541 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2542 } 2543 } 2544 } 2545 2546 private final class BinderService extends IPowerManager.Stub { 2547 @Override // Binder call 2548 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2549 String packageName, int uid) { 2550 if (uid < 0) { 2551 uid = Binder.getCallingUid(); 2552 } 2553 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2554 } 2555 2556 @Override // Binder call 2557 public void powerHint(int hintId, int data) { 2558 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2559 powerHintInternal(hintId, data); 2560 } 2561 2562 @Override // Binder call 2563 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2564 WorkSource ws, String historyTag) { 2565 if (lock == null) { 2566 throw new IllegalArgumentException("lock must not be null"); 2567 } 2568 if (packageName == null) { 2569 throw new IllegalArgumentException("packageName must not be null"); 2570 } 2571 PowerManager.validateWakeLockParameters(flags, tag); 2572 2573 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2574 if (ws != null && ws.size() != 0) { 2575 mContext.enforceCallingOrSelfPermission( 2576 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2577 } else { 2578 ws = null; 2579 } 2580 2581 final int uid = Binder.getCallingUid(); 2582 final int pid = Binder.getCallingPid(); 2583 final long ident = Binder.clearCallingIdentity(); 2584 try { 2585 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2586 } finally { 2587 Binder.restoreCallingIdentity(ident); 2588 } 2589 } 2590 2591 @Override // Binder call 2592 public void releaseWakeLock(IBinder lock, int flags) { 2593 if (lock == null) { 2594 throw new IllegalArgumentException("lock must not be null"); 2595 } 2596 2597 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2598 2599 final long ident = Binder.clearCallingIdentity(); 2600 try { 2601 releaseWakeLockInternal(lock, flags); 2602 } finally { 2603 Binder.restoreCallingIdentity(ident); 2604 } 2605 } 2606 2607 @Override // Binder call 2608 public void updateWakeLockUids(IBinder lock, int[] uids) { 2609 WorkSource ws = null; 2610 2611 if (uids != null) { 2612 ws = new WorkSource(); 2613 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2614 // one at a time? 2615 for (int i = 0; i < uids.length; i++) { 2616 ws.add(uids[i]); 2617 } 2618 } 2619 updateWakeLockWorkSource(lock, ws, null); 2620 } 2621 2622 @Override // Binder call 2623 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2624 if (lock == null) { 2625 throw new IllegalArgumentException("lock must not be null"); 2626 } 2627 2628 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2629 if (ws != null && ws.size() != 0) { 2630 mContext.enforceCallingOrSelfPermission( 2631 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2632 } else { 2633 ws = null; 2634 } 2635 2636 final long ident = Binder.clearCallingIdentity(); 2637 try { 2638 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2639 } finally { 2640 Binder.restoreCallingIdentity(ident); 2641 } 2642 } 2643 2644 @Override // Binder call 2645 public boolean isWakeLockLevelSupported(int level) { 2646 final long ident = Binder.clearCallingIdentity(); 2647 try { 2648 return isWakeLockLevelSupportedInternal(level); 2649 } finally { 2650 Binder.restoreCallingIdentity(ident); 2651 } 2652 } 2653 2654 @Override // Binder call 2655 public void userActivity(long eventTime, int event, int flags) { 2656 final long now = SystemClock.uptimeMillis(); 2657 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2658 != PackageManager.PERMISSION_GRANTED) { 2659 // Once upon a time applications could call userActivity(). 2660 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2661 // request instead of throwing a SecurityException so we don't break old apps. 2662 synchronized (mLock) { 2663 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2664 mLastWarningAboutUserActivityPermission = now; 2665 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2666 + "caller does not have DEVICE_POWER permission. " 2667 + "Please fix your app! " 2668 + " pid=" + Binder.getCallingPid() 2669 + " uid=" + Binder.getCallingUid()); 2670 } 2671 } 2672 return; 2673 } 2674 2675 if (eventTime > SystemClock.uptimeMillis()) { 2676 throw new IllegalArgumentException("event time must not be in the future"); 2677 } 2678 2679 final int uid = Binder.getCallingUid(); 2680 final long ident = Binder.clearCallingIdentity(); 2681 try { 2682 userActivityInternal(eventTime, event, flags, uid); 2683 } finally { 2684 Binder.restoreCallingIdentity(ident); 2685 } 2686 } 2687 2688 @Override // Binder call 2689 public void wakeUp(long eventTime) { 2690 if (eventTime > SystemClock.uptimeMillis()) { 2691 throw new IllegalArgumentException("event time must not be in the future"); 2692 } 2693 2694 mContext.enforceCallingOrSelfPermission( 2695 android.Manifest.permission.DEVICE_POWER, null); 2696 2697 final long ident = Binder.clearCallingIdentity(); 2698 try { 2699 wakeUpInternal(eventTime); 2700 } finally { 2701 Binder.restoreCallingIdentity(ident); 2702 } 2703 } 2704 2705 @Override // Binder call 2706 public void goToSleep(long eventTime, int reason) { 2707 if (eventTime > SystemClock.uptimeMillis()) { 2708 throw new IllegalArgumentException("event time must not be in the future"); 2709 } 2710 2711 mContext.enforceCallingOrSelfPermission( 2712 android.Manifest.permission.DEVICE_POWER, null); 2713 2714 final long ident = Binder.clearCallingIdentity(); 2715 try { 2716 goToSleepInternal(eventTime, reason); 2717 } finally { 2718 Binder.restoreCallingIdentity(ident); 2719 } 2720 } 2721 2722 @Override // Binder call 2723 public void nap(long eventTime) { 2724 if (eventTime > SystemClock.uptimeMillis()) { 2725 throw new IllegalArgumentException("event time must not be in the future"); 2726 } 2727 2728 mContext.enforceCallingOrSelfPermission( 2729 android.Manifest.permission.DEVICE_POWER, null); 2730 2731 final long ident = Binder.clearCallingIdentity(); 2732 try { 2733 napInternal(eventTime); 2734 } finally { 2735 Binder.restoreCallingIdentity(ident); 2736 } 2737 } 2738 2739 @Override // Binder call 2740 public boolean isInteractive() { 2741 final long ident = Binder.clearCallingIdentity(); 2742 try { 2743 return isInteractiveInternal(); 2744 } finally { 2745 Binder.restoreCallingIdentity(ident); 2746 } 2747 } 2748 2749 /** 2750 * Reboots the device. 2751 * 2752 * @param confirm If true, shows a reboot confirmation dialog. 2753 * @param reason The reason for the reboot, or null if none. 2754 * @param wait If true, this call waits for the reboot to complete and does not return. 2755 */ 2756 @Override // Binder call 2757 public void reboot(boolean confirm, String reason, boolean wait) { 2758 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2759 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2760 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2761 } 2762 2763 final long ident = Binder.clearCallingIdentity(); 2764 try { 2765 shutdownOrRebootInternal(false, confirm, reason, wait); 2766 } finally { 2767 Binder.restoreCallingIdentity(ident); 2768 } 2769 } 2770 2771 /** 2772 * Shuts down the device. 2773 * 2774 * @param confirm If true, shows a shutdown confirmation dialog. 2775 * @param wait If true, this call waits for the shutdown to complete and does not return. 2776 */ 2777 @Override // Binder call 2778 public void shutdown(boolean confirm, boolean wait) { 2779 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2780 2781 final long ident = Binder.clearCallingIdentity(); 2782 try { 2783 shutdownOrRebootInternal(true, confirm, null, wait); 2784 } finally { 2785 Binder.restoreCallingIdentity(ident); 2786 } 2787 } 2788 2789 /** 2790 * Crash the runtime (causing a complete restart of the Android framework). 2791 * Requires REBOOT permission. Mostly for testing. Should not return. 2792 */ 2793 @Override // Binder call 2794 public void crash(String message) { 2795 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2796 2797 final long ident = Binder.clearCallingIdentity(); 2798 try { 2799 crashInternal(message); 2800 } finally { 2801 Binder.restoreCallingIdentity(ident); 2802 } 2803 } 2804 2805 /** 2806 * Set the setting that determines whether the device stays on when plugged in. 2807 * The argument is a bit string, with each bit specifying a power source that, 2808 * when the device is connected to that source, causes the device to stay on. 2809 * See {@link android.os.BatteryManager} for the list of power sources that 2810 * can be specified. Current values include 2811 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2812 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2813 * 2814 * Used by "adb shell svc power stayon ..." 2815 * 2816 * @param val an {@code int} containing the bits that specify which power sources 2817 * should cause the device to stay on. 2818 */ 2819 @Override // Binder call 2820 public void setStayOnSetting(int val) { 2821 mContext.enforceCallingOrSelfPermission( 2822 android.Manifest.permission.WRITE_SETTINGS, null); 2823 2824 final long ident = Binder.clearCallingIdentity(); 2825 try { 2826 setStayOnSettingInternal(val); 2827 } finally { 2828 Binder.restoreCallingIdentity(ident); 2829 } 2830 } 2831 2832 /** 2833 * Used by device administration to set the maximum screen off timeout. 2834 * 2835 * This method must only be called by the device administration policy manager. 2836 */ 2837 @Override // Binder call 2838 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2839 final long ident = Binder.clearCallingIdentity(); 2840 try { 2841 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2842 } finally { 2843 Binder.restoreCallingIdentity(ident); 2844 } 2845 } 2846 2847 /** 2848 * Used by the settings application and brightness control widgets to 2849 * temporarily override the current screen brightness setting so that the 2850 * user can observe the effect of an intended settings change without applying 2851 * it immediately. 2852 * 2853 * The override will be canceled when the setting value is next updated. 2854 * 2855 * @param brightness The overridden brightness. 2856 * 2857 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2858 */ 2859 @Override // Binder call 2860 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2861 mContext.enforceCallingOrSelfPermission( 2862 android.Manifest.permission.DEVICE_POWER, null); 2863 2864 final long ident = Binder.clearCallingIdentity(); 2865 try { 2866 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2867 } finally { 2868 Binder.restoreCallingIdentity(ident); 2869 } 2870 } 2871 2872 /** 2873 * Used by the settings application and brightness control widgets to 2874 * temporarily override the current screen auto-brightness adjustment setting so that the 2875 * user can observe the effect of an intended settings change without applying 2876 * it immediately. 2877 * 2878 * The override will be canceled when the setting value is next updated. 2879 * 2880 * @param adj The overridden brightness, or Float.NaN to disable the override. 2881 * 2882 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2883 */ 2884 @Override // Binder call 2885 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2886 mContext.enforceCallingOrSelfPermission( 2887 android.Manifest.permission.DEVICE_POWER, null); 2888 2889 final long ident = Binder.clearCallingIdentity(); 2890 try { 2891 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2892 } finally { 2893 Binder.restoreCallingIdentity(ident); 2894 } 2895 } 2896 2897 /** 2898 * Used by the phone application to make the attention LED flash when ringing. 2899 */ 2900 @Override // Binder call 2901 public void setAttentionLight(boolean on, int color) { 2902 mContext.enforceCallingOrSelfPermission( 2903 android.Manifest.permission.DEVICE_POWER, null); 2904 2905 final long ident = Binder.clearCallingIdentity(); 2906 try { 2907 setAttentionLightInternal(on, color); 2908 } finally { 2909 Binder.restoreCallingIdentity(ident); 2910 } 2911 } 2912 2913 @Override // Binder call 2914 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2915 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2916 != PackageManager.PERMISSION_GRANTED) { 2917 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2918 + Binder.getCallingPid() 2919 + ", uid=" + Binder.getCallingUid()); 2920 return; 2921 } 2922 2923 final long ident = Binder.clearCallingIdentity(); 2924 try { 2925 dumpInternal(pw); 2926 } finally { 2927 Binder.restoreCallingIdentity(ident); 2928 } 2929 } 2930 } 2931 2932 private final class LocalService extends PowerManagerInternal { 2933 /** 2934 * Used by the window manager to override the screen brightness based on the 2935 * current foreground activity. 2936 * 2937 * This method must only be called by the window manager. 2938 * 2939 * @param brightness The overridden brightness, or -1 to disable the override. 2940 */ 2941 @Override 2942 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2943 mContext.enforceCallingOrSelfPermission( 2944 android.Manifest.permission.DEVICE_POWER, null); 2945 2946 final long ident = Binder.clearCallingIdentity(); 2947 try { 2948 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2949 } finally { 2950 Binder.restoreCallingIdentity(ident); 2951 } 2952 } 2953 2954 /** 2955 * Used by the window manager to override the button brightness based on the 2956 * current foreground activity. 2957 * 2958 * This method must only be called by the window manager. 2959 * 2960 * @param brightness The overridden brightness, or -1 to disable the override. 2961 */ 2962 @Override 2963 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2964 // Do nothing. 2965 // Button lights are not currently supported in the new implementation. 2966 mContext.enforceCallingOrSelfPermission( 2967 android.Manifest.permission.DEVICE_POWER, null); 2968 } 2969 2970 /** 2971 * Used by the window manager to override the user activity timeout based on the 2972 * current foreground activity. It can only be used to make the timeout shorter 2973 * than usual, not longer. 2974 * 2975 * This method must only be called by the window manager. 2976 * 2977 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2978 */ 2979 @Override 2980 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2981 mContext.enforceCallingOrSelfPermission( 2982 android.Manifest.permission.DEVICE_POWER, null); 2983 2984 final long ident = Binder.clearCallingIdentity(); 2985 try { 2986 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2987 } finally { 2988 Binder.restoreCallingIdentity(ident); 2989 } 2990 } 2991 2992 @Override 2993 public boolean getLowPowerModeEnabled() { 2994 synchronized (mLock) { 2995 return mLowPowerModeEnabled; 2996 } 2997 } 2998 2999 @Override 3000 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3001 synchronized (mLock) { 3002 mLowPowerModeListeners.add(listener); 3003 } 3004 } 3005 3006 @Override 3007 public void setPolicy(WindowManagerPolicy policy) { 3008 PowerManagerService.this.setPolicy(policy); 3009 } 3010 } 3011} 3012