1 files changed, 46 insertions, 0 deletions
diff --git a/services/core/java/com/android/server/dreams/McuHal.java b/services/core/java/com/android/server/dreams/McuHal.java
new file mode 100644
index 0000000..1dc79c7
--- /dev/null
+++ b/services/core/java/com/android/server/dreams/McuHal.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.dreams;
+
+import android.service.dreams.DozeHardware;
+
+/**
+ * Provides access to the low-level microcontroller hardware abstraction layer.
+ */
+final class McuHal {
+    private final long mPtr;
+
+    private static native long nativeOpen();
+    private static native byte[] nativeSendMessage(long ptr, String msg, byte[] arg);
+
+    private McuHal(long ptr) {
+        mPtr = ptr;
+    }
+
+    public static McuHal open() {
+        long ptr = nativeOpen();
+        return ptr != 0 ? new McuHal(ptr) : null;
+    }
+
+    public void reset() {
+        sendMessage(DozeHardware.MSG_ENABLE_MCU, DozeHardware.VALUE_OFF);
+    }
+
+    public byte[] sendMessage(String msg, byte[] arg) {
+        return nativeSendMessage(mPtr, msg, arg);
+    }
+}