Add platform features for USB host and USB accessory support.

Also removed config_hasUsbHostSupport framework resource, which is now obsolete.

Change-Id: I6f18cc1c4f68085de8b8363e1b5edff79aff404f
Signed-off-by: Mike Lockwood <lockwood@android.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/services/java/com/android/server/usb/UsbService.java b/services/java/com/android/server/usb/UsbService.java
index de4ac03..a093d95 100644
--- a/services/java/com/android/server/usb/UsbService.java
+++ b/services/java/com/android/server/usb/UsbService.java
@@ -108,13 +108,15 @@ public class UsbService extends IUsbManager.Stub {
     private final Context mContext;
     private final Object mLock = new Object();
     private final UsbDeviceSettingsManager mDeviceManager;
+    private final boolean mHasUsbHost;
+    private final boolean mHasUsbAccessory;
 
     /*
      * Handles USB function enable/disable events (device mode)
      */
     private final void functionEnabledLocked(String function, boolean enabled) {
         boolean enteringAccessoryMode =
-            (enabled && UsbManager.USB_FUNCTION_ACCESSORY.equals(function));
+            (mHasUsbAccessory && enabled && UsbManager.USB_FUNCTION_ACCESSORY.equals(function));
 
         if (enteringAccessoryMode) {
             // keep a list of functions to reenable after exiting accessory mode
@@ -207,6 +209,9 @@ public class UsbService extends IUsbManager.Stub {
     public UsbService(Context context) {
         mContext = context;
         mDeviceManager = new UsbDeviceSettingsManager(context);
+        PackageManager pm = mContext.getPackageManager();
+        mHasUsbHost = pm.hasSystemFeature(PackageManager.FEATURE_USB_HOST);
+        mHasUsbAccessory = pm.hasSystemFeature(PackageManager.FEATURE_USB_ACCESSORY);
 
         mHostBlacklist = context.getResources().getStringArray(
                 com.android.internal.R.array.config_usbHostBlacklist);
@@ -378,8 +383,7 @@ public class UsbService extends IUsbManager.Stub {
 
     public void systemReady() {
         synchronized (mLock) {
-            if (mContext.getResources().getBoolean(
-                    com.android.internal.R.bool.config_hasUsbHostSupport)) {
+            if (mHasUsbHost) {
                 // start monitoring for connected USB devices
                 initHostSupport();
             }