Pavel Maltsev | 0d07c76 | 2016-11-03 16:40:15 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.car; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.hardware.display.DisplayManager; |
| 21 | import android.os.PowerManager; |
| 22 | import android.os.PowerManager.WakeLock; |
| 23 | import android.os.SystemClock; |
| 24 | import android.util.Log; |
| 25 | import android.view.Display; |
| 26 | |
| 27 | /** |
| 28 | * Interface to abstract all system interaction. |
| 29 | */ |
| 30 | public abstract class SystemInterface { |
| 31 | public abstract void setDisplayState(boolean on); |
| 32 | public abstract void releaseAllWakeLocks(); |
| 33 | public abstract void shutdown(); |
| 34 | public abstract void enterDeepSleep(int wakeupTimeSec); |
| 35 | public abstract void switchToPartialWakeLock(); |
| 36 | public abstract void switchToFullWakeLock(); |
| 37 | public abstract void startDisplayStateMonitoring(CarPowerManagementService service); |
| 38 | public abstract void stopDisplayStateMonitoring(); |
| 39 | public abstract boolean isSystemSupportingDeepSleep(); |
| 40 | public abstract boolean isWakeupCausedByTimer(); |
| 41 | |
| 42 | |
| 43 | public static SystemInterface getDefault(Context context) { |
| 44 | return new SystemInterfaceImpl(context); |
| 45 | } |
| 46 | |
| 47 | private static class SystemInterfaceImpl extends SystemInterface { |
| 48 | private final PowerManager mPowerManager; |
| 49 | private final DisplayManager mDisplayManager; |
| 50 | private final WakeLock mFullWakeLock; |
| 51 | private final WakeLock mPartialWakeLock; |
| 52 | private final DisplayStateListener mDisplayListener; |
| 53 | private CarPowerManagementService mService; |
| 54 | private boolean mDisplayStateSet; |
| 55 | |
| 56 | private SystemInterfaceImpl(Context context) { |
| 57 | mPowerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); |
| 58 | mDisplayManager = (DisplayManager) context.getSystemService(Context.DISPLAY_SERVICE); |
| 59 | mFullWakeLock = mPowerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, |
| 60 | CarLog.TAG_POWER); |
| 61 | mPartialWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, |
| 62 | CarLog.TAG_POWER); |
| 63 | mDisplayListener = new DisplayStateListener(); |
| 64 | } |
| 65 | |
| 66 | @Override |
| 67 | public void startDisplayStateMonitoring(CarPowerManagementService service) { |
| 68 | synchronized (this) { |
| 69 | mService = service; |
| 70 | mDisplayStateSet = isMainDisplayOn(); |
| 71 | } |
| 72 | mDisplayManager.registerDisplayListener(mDisplayListener, service.getHandler()); |
| 73 | } |
| 74 | |
| 75 | @Override |
| 76 | public void stopDisplayStateMonitoring() { |
| 77 | mDisplayManager.unregisterDisplayListener(mDisplayListener); |
| 78 | } |
| 79 | |
| 80 | @Override |
| 81 | public void setDisplayState(boolean on) { |
| 82 | synchronized (this) { |
| 83 | mDisplayStateSet = on; |
| 84 | } |
| 85 | if (on) { |
| 86 | switchToFullWakeLock(); |
| 87 | Log.i(CarLog.TAG_POWER, "on display"); |
| 88 | mPowerManager.wakeUp(SystemClock.uptimeMillis()); |
| 89 | } else { |
| 90 | switchToPartialWakeLock(); |
| 91 | Log.i(CarLog.TAG_POWER, "off display"); |
| 92 | mPowerManager.goToSleep(SystemClock.uptimeMillis()); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | private boolean isMainDisplayOn() { |
| 97 | Display disp = mDisplayManager.getDisplay(Display.DEFAULT_DISPLAY); |
| 98 | return disp.getState() == Display.STATE_ON; |
| 99 | } |
| 100 | |
| 101 | @Override |
| 102 | public void shutdown() { |
| 103 | mPowerManager.shutdown(false /* no confirm*/, null, true /* true */); |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public void enterDeepSleep(int wakeupTimeSec) { |
| 108 | //TODO set wake up time, bug: 32061842 |
| 109 | mPowerManager.goToSleep(SystemClock.uptimeMillis(), |
| 110 | PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN, |
| 111 | PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE); |
| 112 | } |
| 113 | |
| 114 | @Override |
| 115 | public boolean isSystemSupportingDeepSleep() { |
| 116 | //TODO should return by checking some kernel suspend control sysfs, bug: 32061842 |
| 117 | return false; |
| 118 | } |
| 119 | |
| 120 | @Override |
| 121 | public void switchToPartialWakeLock() { |
| 122 | if (!mPartialWakeLock.isHeld()) { |
| 123 | mPartialWakeLock.acquire(); |
| 124 | } |
| 125 | if (mFullWakeLock.isHeld()) { |
| 126 | mFullWakeLock.release(); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | @Override |
| 131 | public void switchToFullWakeLock() { |
| 132 | if (!mFullWakeLock.isHeld()) { |
| 133 | mFullWakeLock.acquire(); |
| 134 | } |
| 135 | if (mPartialWakeLock.isHeld()) { |
| 136 | mPartialWakeLock.release(); |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | @Override |
| 141 | public void releaseAllWakeLocks() { |
| 142 | if (mPartialWakeLock.isHeld()) { |
| 143 | mPartialWakeLock.release(); |
| 144 | } |
| 145 | if (mFullWakeLock.isHeld()) { |
| 146 | mFullWakeLock.release(); |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | @Override |
| 151 | public boolean isWakeupCausedByTimer() { |
| 152 | //TODO bug: 32061842, check wake up reason and do necessary operation information should |
| 153 | // come from kernel. it can be either power on or wake up for maintenance |
| 154 | // power on will involve GPIO trigger from power controller |
| 155 | // its own wakeup will involve timer expiration. |
| 156 | return false; |
| 157 | } |
| 158 | |
| 159 | private void handleMainDisplayChanged() { |
| 160 | boolean isOn = isMainDisplayOn(); |
| 161 | CarPowerManagementService service; |
| 162 | synchronized (this) { |
| 163 | if (mDisplayStateSet == isOn) { // same as what is set |
| 164 | return; |
| 165 | } |
| 166 | service = mService; |
| 167 | } |
| 168 | service.handleMainDisplayChanged(isOn); |
| 169 | } |
| 170 | |
| 171 | private class DisplayStateListener implements DisplayManager.DisplayListener { |
| 172 | |
| 173 | @Override |
| 174 | public void onDisplayAdded(int displayId) { |
| 175 | //ignore |
| 176 | } |
| 177 | |
| 178 | @Override |
| 179 | public void onDisplayChanged(int displayId) { |
| 180 | if (displayId == Display.DEFAULT_DISPLAY) { |
| 181 | handleMainDisplayChanged(); |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | @Override |
| 186 | public void onDisplayRemoved(int displayId) { |
| 187 | //ignore |
| 188 | } |
| 189 | } |
| 190 | } |
| 191 | } |