1 files changed, 101 insertions, 0 deletions
diff --git a/libsensors_iio/src/HWSensorBase.h b/libsensors_iio/src/HWSensorBase.h
new file mode 100644
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+++ b/libsensors_iio/src/HWSensorBase.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2013-2015 STMicroelectronics
+ * Author: Denis Ciocca - <denis.ciocca@st.com>
+ *
+ * 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 ST_HWSENSOR_BASE_H
+#define ST_HWSENSOR_BASE_H
+
+#include <poll.h>
+#include <math.h>
+
+#include "SensorBase.h"
+
+extern "C" {
+	#include "iio_utils.h"
+	#include "events.h"
+};
+
+#define HW_SENSOR_BASE_DEFAULT_IIO_BUFFER_LEN	(2)
+#define HW_SENSOR_BASE_IIO_SYSFS_PATH_MAX	(50)
+#define HW_SENSOR_BASE_IIO_DEVICE_NAME_MAX	(30)
+#define HW_SENSOR_BASE_MAX_CHANNELS		(8)
+
+#define FILENAME_BUFFER_ENABLE			"buffer/enable"
+#define FILENAME_BUFFER_LENGTH			"buffer/length"
+#define FILENAME_SAMPLING_FREQ			"sampling_frequency"
+#define FILENAME_MAX_RATE_DELIVERY		"max_delivery_rate"
+#define FILENAME_HRTIMER_TRIGGER_FREQ		"frequency"
+#define FILENAME_FLUSH				"flush"
+
+struct HWSensorBaseCommonData {
+	char iio_sysfs_path[HW_SENSOR_BASE_IIO_SYSFS_PATH_MAX];
+	char device_name[HW_SENSOR_BASE_IIO_DEVICE_NAME_MAX];
+	unsigned int iio_dev_num;
+
+	int num_channels;
+	struct iio_channel_info channels[HW_SENSOR_BASE_MAX_CHANNELS];
+
+	struct iio_scale_available sa;
+} typedef HWSensorBaseCommonData;
+
+
+class HWSensorBase;
+class HWSensorBaseWithPollrate;
+
+/*
+ * class HWSensorBase
+ */
+class HWSensorBase : public SensorBase {
+protected:
+	struct pollfd pollfd_iio[2];
+	ssize_t scan_size;
+	uint8_t *sensor_data;
+	unsigned int current_fifo_len;
+	HWSensorBaseCommonData common_data;
+
+	int WriteBufferLenght(unsigned int buf_len);
+
+public:
+	HWSensorBase(HWSensorBaseCommonData *data, const char *name,
+				int handle, int sensor_type, unsigned int hw_fifo_len,
+				int pipe_data_fd, float power_consumption);
+	virtual ~HWSensorBase();
+
+	virtual int Enable(int handle, bool enable);
+	virtual int FlushData();
+	virtual void ThreadTask();
+};
+
+
+/*
+ * class HWSensorBaseWithPollrate
+ */
+class HWSensorBaseWithPollrate : public HWSensorBase {
+private:
+	struct iio_sampling_frequency_available sampling_frequency_available;
+
+public:
+	HWSensorBaseWithPollrate(HWSensorBaseCommonData *data, const char *name,
+			struct iio_sampling_frequency_available *sfa, int handle,
+			int sensor_type, unsigned int hw_fifo_len, int pipe_data_fd,
+			float power_consumption);
+	virtual ~HWSensorBaseWithPollrate();
+
+	virtual int SetDelay(int handle, int64_t period_ns, int64_t timeout);
+	virtual void WriteDataToPipe();
+};
+
+#endif /* ST_HWSENSOR_BASE_H */