| /* |
| * 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); |
| } |
| } |