add lis3dsh tilt sensor HAL code

Add ST lis3dsh tilt sensor HAL code base on input subsystem

Change-Id: Ic231b8e0acec604ca16346ca711332a9282b480e
Tracked-On: https://jira01.devtools.intel.com/browse/MARVIN-172
Signed-off-by: Li,Fei <feix.f.li@intel.com>
Reviewed-on: https://android.intel.com:443/317600

1 files changed, 46 insertions, 0 deletions

diff --git a/tilt/InputEventReader.h b/tilt/InputEventReader.h
new file mode 100644
index 0000000..6e4350b
--- /dev/null
+++ b/tilt/InputEventReader.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2015 Intel Corp
+ *
+ * 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.
+ */
+
+#ifndef ANDROID_INPUT_EVENT_READER_H
+#define ANDROID_INPUT_EVENT_READER_H
+
+#include <stdint.h>
+#include <errno.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+#include "SensorBase.h"
+
+
+struct input_event;
+
+class InputEventCircularReader
+{
+	struct input_event* const mBuffer;
+	struct input_event* const mBufferEnd;
+	struct input_event* mHead;
+	struct input_event* mCurr;
+	ssize_t mFreeSpace;
+	int mLastFd;
+
+public:
+	InputEventCircularReader(size_t numEvents);
+	~InputEventCircularReader();
+	ssize_t fill(int fd);
+	ssize_t readEvent(input_event const** events);
+	void next();
+};
+#endif  // ANDROID_INPUT_EVENT_READER_H