Bluetooth:LCD wakeup during remote BT pairing request.

This change fixes the issue of LCD not coming up during remote
initiated pairing request when android is in suspend

Change-Id: I658954857584ae1a4737261b1ae1749f4d0a7998
Signed-off-by: Bheemsen Kulkarni <x0099674@ti.com>

1 files changed, 30 insertions, 3 deletions

diff --git a/core/java/android/server/BluetoothEventLoop.java b/core/java/android/server/BluetoothEventLoop.java
index b28cf43..e380d11 100644
--- a/core/java/android/server/BluetoothEventLoop.java
+++ b/core/java/android/server/BluetoothEventLoop.java
@@ -30,6 +30,8 @@ import android.util.Log;
 
 import java.util.HashMap;
 import java.util.Set;
+import android.os.PowerManager;
+
 
 /**
  * TODO: Move this to
@@ -51,6 +53,9 @@ class BluetoothEventLoop {
     private final BluetoothService mBluetoothService;
     private final BluetoothAdapter mAdapter;
     private final Context mContext;
+    // The WakeLock is used for bringing up the LCD during a pairing request
+    // from remote device when Android is in Suspend state.
+    private PowerManager.WakeLock mWakeLock;
 
     private static final int EVENT_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY = 1;
     private static final int EVENT_RESTART_BLUETOOTH = 2;
@@ -121,6 +126,11 @@ class BluetoothEventLoop {
         mContext = context;
         mPasskeyAgentRequestData = new HashMap();
         mAdapter = adapter;
+        //WakeLock instantiation in BluetoothEventLoop class
+        PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
+        mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP
+                | PowerManager.ON_AFTER_RELEASE, TAG);
+        mWakeLock.setReferenceCounted(false);
         initializeNativeDataNative();
     }
 
@@ -451,37 +461,46 @@ class BluetoothEventLoop {
             mHandler.sendMessageDelayed(message, 1500);
             return;
         }
-
+        // Acquire wakelock during PIN code request to bring up LCD display
+        mWakeLock.acquire();
         Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
         intent.putExtra(BluetoothDevice.EXTRA_DEVICE, mAdapter.getRemoteDevice(address));
         intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT,
                         BluetoothDevice.PAIRING_VARIANT_CONSENT);
         mContext.sendBroadcast(intent, BLUETOOTH_ADMIN_PERM);
+        // Release wakelock to allow the LCD to go off after the PIN popup notifcation.
+        mWakeLock.release();
         return;
     }
 
     private void onRequestPasskeyConfirmation(String objectPath, int passkey, int nativeData) {
         String address = checkPairingRequestAndGetAddress(objectPath, nativeData);
         if (address == null) return;
-
+        // Acquire wakelock during PIN code request to bring up LCD display
+        mWakeLock.acquire();
         Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
         intent.putExtra(BluetoothDevice.EXTRA_DEVICE, mAdapter.getRemoteDevice(address));
         intent.putExtra(BluetoothDevice.EXTRA_PASSKEY, passkey);
         intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT,
                 BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION);
         mContext.sendBroadcast(intent, BLUETOOTH_ADMIN_PERM);
+        // Release wakelock to allow the LCD to go off after the PIN popup notifcation.
+        mWakeLock.release();
         return;
     }
 
     private void onRequestPasskey(String objectPath, int nativeData) {
         String address = checkPairingRequestAndGetAddress(objectPath, nativeData);
         if (address == null) return;
-
+        // Acquire wakelock during PIN code request to bring up LCD display
+        mWakeLock.acquire();
         Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
         intent.putExtra(BluetoothDevice.EXTRA_DEVICE, mAdapter.getRemoteDevice(address));
         intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT,
                 BluetoothDevice.PAIRING_VARIANT_PASSKEY);
         mContext.sendBroadcast(intent, BLUETOOTH_ADMIN_PERM);
+        // Release wakelock to allow the LCD to go off after the PIN popup notifcation.
+        mWakeLock.release();
         return;
     }
 
@@ -519,10 +538,14 @@ class BluetoothEventLoop {
                 }
            }
         }
+        // Acquire wakelock during PIN code request to bring up LCD display
+        mWakeLock.acquire();
         Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
         intent.putExtra(BluetoothDevice.EXTRA_DEVICE, mAdapter.getRemoteDevice(address));
         intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, BluetoothDevice.PAIRING_VARIANT_PIN);
         mContext.sendBroadcast(intent, BLUETOOTH_ADMIN_PERM);
+        // Release wakelock to allow the LCD to go off after the PIN popup notifcation.
+        mWakeLock.release();
         return;
     }
 
@@ -530,12 +553,16 @@ class BluetoothEventLoop {
         String address = checkPairingRequestAndGetAddress(objectPath, nativeData);
         if (address == null) return;
 
+        // Acquire wakelock during PIN code request to bring up LCD display
+        mWakeLock.acquire();
         Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
         intent.putExtra(BluetoothDevice.EXTRA_DEVICE, mAdapter.getRemoteDevice(address));
         intent.putExtra(BluetoothDevice.EXTRA_PASSKEY, passkey);
         intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT,
                         BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY);
         mContext.sendBroadcast(intent, BLUETOOTH_ADMIN_PERM);
+        //Release wakelock to allow the LCD to go off after the PIN popup notifcation.
+        mWakeLock.release();
     }
 
     private boolean onAgentAuthorize(String objectPath, String deviceUuid) {