Add versioning to FLP HAL.

Retain compatibility with implementations compiled
against old headers or left unchanged from LMP.

Change-Id: I3f7cfaaf0cba8697c312940a805b053c6040caa6

2 files changed, 15 insertions, 1 deletions

diff --git a/core/java/android/hardware/location/GeofenceHardwareImpl.java b/core/java/android/hardware/location/GeofenceHardwareImpl.java
index 5d40e94..b34c9fb 100644
--- a/core/java/android/hardware/location/GeofenceHardwareImpl.java
+++ b/core/java/android/hardware/location/GeofenceHardwareImpl.java
@@ -41,6 +41,7 @@ import java.util.Iterator;
 public final class GeofenceHardwareImpl {
     private static final String TAG = "GeofenceHardwareImpl";
     private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
+    private static final int FIRST_VERSION_WITH_CAPABILITIES = 2;
 
     private final Context mContext;
     private static GeofenceHardwareImpl sInstance;
@@ -54,6 +55,7 @@ public final class GeofenceHardwareImpl {
     private IFusedGeofenceHardware mFusedService;
     private IGpsGeofenceHardware mGpsService;
     private int mCapabilities;
+    private int mVersion = 1;
 
     private int[] mSupportedMonitorTypes = new int[GeofenceHardware.NUM_MONITORS];
 
@@ -145,8 +147,10 @@ public final class GeofenceHardwareImpl {
     private void updateFusedHardwareAvailability() {
         boolean fusedSupported;
         try {
+            final boolean hasGnnsCapabilities = (mVersion < FIRST_VERSION_WITH_CAPABILITIES)
+                    || (mCapabilities & CAPABILITY_GNSS) != 0;
             fusedSupported = (mFusedService != null
-                    ? mFusedService.isSupported() && (mCapabilities & CAPABILITY_GNSS) != 0
+                    ? mFusedService.isSupported() && hasGnnsCapabilities
                     : false);
         } catch (RemoteException e) {
             Log.e(TAG, "RemoteException calling LocationManagerService");
@@ -177,6 +181,11 @@ public final class GeofenceHardwareImpl {
         updateFusedHardwareAvailability();
     }
 
+    public void setVersion(int version) {
+        mVersion = version;
+        updateFusedHardwareAvailability();
+    }
+
     public void setFusedGeofenceHardware(IFusedGeofenceHardware service) {
         if(mFusedService == null) {
             mFusedService = service;
diff --git a/core/java/android/hardware/location/IFusedLocationHardware.aidl b/core/java/android/hardware/location/IFusedLocationHardware.aidl
index 3de766a..2ea4d23 100644
--- a/core/java/android/hardware/location/IFusedLocationHardware.aidl
+++ b/core/java/android/hardware/location/IFusedLocationHardware.aidl
@@ -121,4 +121,9 @@ interface IFusedLocationHardware {
      * of the locations returned in this call.
      */
     void flushBatchedLocations() = 11;
+
+    /**
+     * Returns the version of this FLP HAL implementation.
+     */
+    int getVersion() = 12;
 }