1 files changed, 146 insertions, 0 deletions
diff --git a/libsensors_iio/src/iio_utils.h b/libsensors_iio/src/iio_utils.h
new file mode 100644
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+++ b/libsensors_iio/src/iio_utils.h
@@ -0,0 +1,146 @@
+/* IIO - useful set of util functionality
+ *
+ * Copyright (c) 2008 Jonathan Cameron
+ * Modified by Denis Ciocca <denis.ciocca@st.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef IIO_UTILS
+#define IIO_UTILS
+
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <dirent.h>
+#include <errno.h>
+#include <stdbool.h>
+
+
+/* Made up value to limit allocation sizes */
+#define IIO_MAX_NAME_LENGTH		(70)
+
+#define FORMAT_SCAN_ELEMENTS_DIR	"%s/scan_elements"
+#define FORMAT_TYPE_FILE		"%s_type"
+
+#define IIO_DEFAULT_BUFFER_LEN		(2)
+
+/**
+ * struct iio_channel_info - information about a given channel
+ * @name: channel name
+ * @generic_name: general name for channel type
+ * @scale: scale factor to be applied for conversion to si units
+ * @offset: offset to be applied for conversion to si units
+ * @index: the channel index in the buffer output
+ * @bytes: number of bytes occupied in buffer output
+ * @mask: a bit mask for the raw output
+ * @is_signed: is the raw value stored signed
+ * @enabled: is this channel enabled
+ **/
+struct iio_channel_info {
+	char *name;
+	char *generic_name;
+	float scale;
+	float offset;
+	unsigned index;
+	unsigned bytes;
+	unsigned bits_used;
+	unsigned shift;
+	uint64_t mask;
+	unsigned be;
+	unsigned is_signed;
+	unsigned enabled;
+	unsigned location;
+	bool isfloat;
+	bool multi_data;
+};
+
+
+/**
+ * build_channel_array() - function to figure out what channels are present
+ * @device_dir: the IIO device directory in sysfs
+ * @
+ **/
+int iio_utils_build_channel_array(const char *device_dir,
+	struct iio_channel_info **ci_array, int *counter, bool read_offset);
+
+/**
+ * find_type_by_name() - function to match top level types by name
+ * @name: top level type instance name
+ * @type: the type of top level instance being sort
+ *
+ * Typical types this is used for are device and trigger.
+ **/
+int find_type_by_name(char *name, const char *type);
+
+int write_sysfs_int(char *filename, char *basedir, int val);
+
+int write_sysfs_int_and_verify(char *filename, char *basedir, int val);
+
+int write_sysfs_ulong_and_verify(char *filename, char *basedir, unsigned long val);
+
+int write_sysfs_float(char *filename, char *basedir, float val);
+
+int write_sysfs_float_and_verify(char *filename, char *basedir, float val);
+
+
+
+
+
+#define IIO_UTILS_MAX_SAMP_FREQ_AVAILABLE		(10)
+#define IIO_UTILS_SCALE_AVAILABLE			(10)
+
+struct iio_scale_available {
+	float values[IIO_UTILS_SCALE_AVAILABLE];
+	unsigned int num_available;
+};
+
+struct iio_sampling_frequency_available {
+	unsigned int hz[IIO_UTILS_MAX_SAMP_FREQ_AVAILABLE];
+	unsigned int num_available;
+};
+
+struct iio_device {
+	unsigned int dev_num;
+	char name[IIO_MAX_NAME_LENGTH];
+};
+
+int iio_utils_get_devices_name(struct iio_device devices[], unsigned int max_list);
+
+int iio_utils_get_sampling_frequency_available(const char *device_dir,
+					struct iio_sampling_frequency_available *sfa);
+
+int iio_utils_get_scale_available(const char *device_dir, struct iio_scale_available *sa, int device_type);
+
+int iio_utils_set_scale(const char *device_dir, float value, int device_type);
+
+int iio_utils_get_hw_fifo_lenght(const char *device_dir);
+
+
+int iio_utils_enable_sensor(const char *device_dir, bool enable);
+
+/**
+ * write_sysfs_string_and_verify() - string write, readback and verify
+ * @filename: name of file to write to
+ * @basedir: the sysfs directory in which the file is to be found
+ * @val: the string to write
+ **/
+int write_sysfs_string_and_verify(char *filename, char *basedir, char *val);
+
+int write_sysfs_string(char *filename, char *basedir, char *val);
+
+int read_sysfs_posint(char *filename, char *basedir);
+
+int read_sysfs_float(char *filename, char *basedir, float *val);
+
+int read_sysfs_string(char *filename, char *basedir, char *str);
+
+int read_sysfs_byte(char *filename, char *basedir, uint8_t *data, size_t len);
+
+int write_sysfs_byte(char *filename, char *basedir, uint8_t *data, size_t len);
+
+#endif /* IIO_UTILS */