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/IioSensorBase.h b/libsensors/IioSensorBase.h
new file mode 100644
index 0000000..d3290e6
--- /dev/null
+++ b/libsensors/IioSensorBase.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2012 Samsung
+ *
+ * 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 SAMSUNG_SENSORBASE_H
+#define SAMSUNG_SENSORBASE_H
+
+#include <stdint.h>
+#include <errno.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+#include "sensors.h"
+#include "SensorBase.h"
+#include "InputEventReader.h"
+
+/*****************************************************************************/
+#define MAX_BUFFER_FOR_EVENT 4
+
+class IioSensorBase:public SensorBase {
+protected:
+ bool mEnabled;
+ bool mHasPendingEvent;
+ InputEventCircularReader mInputReader;
+ sensors_event_t mPendingEvent;
+ char *mInputSysfsEnable;
+ char *mInputSysfsSamplingFrequency;
+ char *mIioSysfsChan;
+ int mIioChanType;
+ FILE *mIioSysfsChanFp;
+ pthread_mutex_t mLock;
+
+ char *makeSysfsName(const char *input_name,
+ const char *input_file);
+
+ virtual bool readValue(int *value);
+ virtual void handleData(int value);
+
+public:
+ IioSensorBase(const char* dev_name,
+ const char* data_name,
+ const char* enable_name,
+ const char* chan_name,
+ int iio_chan_type);
+
+ virtual ~IioSensorBase();
+ virtual int enable(int32_t handle, int en);
+ virtual int setDelay(int32_t handle, int64_t ns);
+ virtual int readEvents(sensors_event_t *data, int count);
+};
+#endif /* SAMSUNG_SENSORBASE_H */