manta: senors: add HAL for light and pressure sensors
This HAL supports sensors using Industrial I/O subsystem.
These sensor devices will be located in /sys/bus/iio/devices.
Light Sensor:
IIO device name: lightsensor-level
chan_type: IIO_LIGHT
channel: in_illuminance0_input
event: /dev/iio:device? (assigned dynamically)
Pressure Sensor:
IIO device name: barometer
chan_type: IIO_PRESSURE (This is not yet defined in main stream.)
channel: in_pressure0_input
event: /dev/iio:device? (assigned dynamically)
TODO: iio/events.h and iio/types.h should be moved to
external/kernel-headers/original.
Change-Id: Ifbeb2f8e7ef7ac09f5b0727a2376c652e5f9e800
Signed-off-by: Won Hyoung Lee <whlee@sta.samsung.com>
diff --git a/libsensors/InputEventReader.h b/libsensors/InputEventReader.h
new file mode 100644
index 0000000..249d8e7
--- /dev/null
+++ b/libsensors/InputEventReader.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2008 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.
+ */
+
+#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 "sensors.h"
+#include "iio/events.h"
+
+/*****************************************************************************/
+
+struct iio_event_data;
+
+class InputEventCircularReader
+{
+ struct iio_event_data* const mBuffer;
+ struct iio_event_data* const mBufferEnd;
+ struct iio_event_data* mHead;
+ struct iio_event_data* mCurr;
+ size_t mMaxEvents;
+ size_t mFreeEvents;
+
+public:
+ InputEventCircularReader(size_t numEvents);
+ ~InputEventCircularReader();
+ ssize_t fill(int fd);
+ bool readEvent(int fd, iio_event_data const** events);
+ void next();
+};
+
+/*****************************************************************************/
+
+#endif /* ANDROID_INPUT_EVENT_READER_H */