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Diffstat (limited to 'libsensors_iio/software/core/mllite/linux/inv_sysfs_utils.c')
-rw-r--r--libsensors_iio/software/core/mllite/linux/inv_sysfs_utils.c318
1 files changed, 0 insertions, 318 deletions
diff --git a/libsensors_iio/software/core/mllite/linux/inv_sysfs_utils.c b/libsensors_iio/software/core/mllite/linux/inv_sysfs_utils.c
deleted file mode 100644
index 649b917..0000000
--- a/libsensors_iio/software/core/mllite/linux/inv_sysfs_utils.c
+++ /dev/null
@@ -1,318 +0,0 @@
-/**
- * @brief Provides helpful file IO wrappers for use with sysfs.
- * @details Based on Jonathan Cameron's @e iio_utils.h.
- */
-
-#include <string.h>
-#include <stdlib.h>
-#include <ctype.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <dirent.h>
-#include <errno.h>
-#include <unistd.h>
-#include "inv_sysfs_utils.h"
-
-/* General TODO list:
- * Select more reasonable string lengths or use fseek and malloc.
- */
-
-/**
- * inv_sysfs_write() - Write an integer to a file.
- * @filename: Path to file.
- * @data: Value to write to file.
- * Returns number of bytes written or a negative error code.
- */
-int inv_sysfs_write(char *filename, long data)
-{
- FILE *fp;
- int count;
-
- if (!filename)
- return -1;
- fp = fopen(filename, "w");
- if (!fp)
- return -errno;
- count = fprintf(fp, "%ld", data);
- fclose(fp);
- return count;
-}
-
-/**
- * inv_sysfs_read() - Read a string from a file.
- * @filename: Path to file.
- * @num_bytes: Number of bytes to read.
- * @data: Data from file.
- * Returns number of bytes written or a negative error code.
- */
-int inv_sysfs_read(char *filename, long num_bytes, char *data)
-{
- FILE *fp;
- int count;
-
- if (!filename)
- return -1;
- fp = fopen(filename, "r");
- if (!fp)
- return -errno;
- count = fread(data, 1, num_bytes, fp);
- fclose(fp);
- return count;
-}
-
-/**
- * inv_read_buffer() - Read data from ring buffer.
- * @fd: File descriptor for buffer file.
- * @data: Data in hardware units.
- * @timestamp: Time when data was read from device. Use NULL if unsupported.
- * Returns number of bytes written or a negative error code.
- */
-int inv_read_buffer(int fd, long *data, long long *timestamp)
-{
- char str[35];
- int count;
-
- count = read(fd, str, sizeof(str));
- if (!count)
- return count;
- if (!timestamp)
- count = sscanf(str, "%ld%ld%ld", &data[0], &data[1], &data[2]);
- else
- count = sscanf(str, "%ld%ld%ld%lld", &data[0], &data[1],
- &data[2], timestamp);
-
- if (count < (timestamp?4:3))
- return -EAGAIN;
- return count;
-}
-
-/**
- * inv_read_raw() - Read raw data.
- * @names: Names of sysfs files.
- * @data: Data in hardware units.
- * @timestamp: Time when data was read from device. Use NULL if unsupported.
- * Returns number of bytes written or a negative error code.
- */
-int inv_read_raw(const struct inv_sysfs_names_s *names, long *data,
- long long *timestamp)
-{
- char str[40];
- int count;
-
- count = inv_sysfs_read((char*)names->raw_data, sizeof(str), str);
- if (count < 0)
- return count;
- if (!timestamp)
- count = sscanf(str, "%ld%ld%ld", &data[0], &data[1], &data[2]);
- else
- count = sscanf(str, "%ld%ld%ld%lld", &data[0], &data[1],
- &data[2], timestamp);
- if (count < (timestamp?4:3))
- return -EAGAIN;
- return count;
-}
-
-/**
- * inv_read_temperature_raw() - Read temperature.
- * @names: Names of sysfs files.
- * @data: Data in hardware units.
- * @timestamp: Time when data was read from device.
- * Returns number of bytes written or a negative error code.
- */
-int inv_read_temperature_raw(const struct inv_sysfs_names_s *names, short *data,
- long long *timestamp)
-{
- char str[25];
- int count;
-
- count = inv_sysfs_read((char*)names->temperature, sizeof(str), str);
- if (count < 0)
- return count;
- count = sscanf(str, "%hd%lld", &data[0], timestamp);
- if (count < 2)
- return -EAGAIN;
- return count;
-}
-
-/**
- * inv_read_fifo_rate() - Read fifo rate.
- * @names: Names of sysfs files.
- * @data: Fifo rate.
- * Returns number of bytes written or a negative error code.
- */
-int inv_read_fifo_rate(const struct inv_sysfs_names_s *names, short *data)
-{
- char str[8];
- int count;
-
- count = inv_sysfs_read((char*)names->fifo_rate, sizeof(str), str);
- if (count < 0)
- return count;
- count = sscanf(str, "%hd", data);
- if (count < 1)
- return -EAGAIN;
- return count;
-}
-
-/**
- * inv_read_power_state() - Read power state.
- * @names: Names of sysfs files.
- * @data: 1 if device is on.
- * Returns number of bytes written or a negative error code.
- */
-int inv_read_power_state(const struct inv_sysfs_names_s *names, char *data)
-{
- char str[2];
- int count;
-
- count = inv_sysfs_read((char*)names->power_state, sizeof(str), str);
- if (count < 0)
- return count;
- count = sscanf(str, "%hd", (short*)data);
- if (count < 1)
- return -EAGAIN;
- return count;
-}
-
-/**
- * inv_read_scale() - Read scale.
- * @names: Names of sysfs files.
- * @data: 1 if device is on.
- * Returns number of bytes written or a negative error code.
- */
-int inv_read_scale(const struct inv_sysfs_names_s *names, float *data)
-{
- char str[5];
- int count;
-
- count = inv_sysfs_read((char*)names->scale, sizeof(str), str);
- if (count < 0)
- return count;
- count = sscanf(str, "%f", data);
- if (count < 1)
- return -EAGAIN;
- return count;
-}
-
-/**
- * inv_read_temp_scale() - Read temperature scale.
- * @names: Names of sysfs files.
- * @data: 1 if device is on.
- * Returns number of bytes written or a negative error code.
- */
-int inv_read_temp_scale(const struct inv_sysfs_names_s *names, short *data)
-{
- char str[4];
- int count;
-
- count = inv_sysfs_read((char*)names->temp_scale, sizeof(str), str);
- if (count < 0)
- return count;
- count = sscanf(str, "%hd", data);
- if (count < 1)
- return -EAGAIN;
- return count;
-}
-
-/**
- * inv_read_temp_offset() - Read temperature offset.
- * @names: Names of sysfs files.
- * @data: 1 if device is on.
- * Returns number of bytes written or a negative error code.
- */
-int inv_read_temp_offset(const struct inv_sysfs_names_s *names, short *data)
-{
- char str[4];
- int count;
-
- count = inv_sysfs_read((char*)names->temp_offset, sizeof(str), str);
- if (count < 0)
- return count;
- count = sscanf(str, "%hd", data);
- if (count < 1)
- return -EAGAIN;
- return count;
-}
-
-/**
- * inv_read_q16() - Get data as q16 fixed point.
- * @names: Names of sysfs files.
- * @data: 1 if device is on.
- * @timestamp: Time when data was read from device.
- * Returns number of bytes written or a negative error code.
- */
-int inv_read_q16(const struct inv_sysfs_names_s *names, long *data,
- long long *timestamp)
-{
- int count;
- short raw[3];
- float scale;
- count = inv_read_raw(names, (long*)raw, timestamp);
- count += inv_read_scale(names, &scale);
- data[0] = (long)(raw[0] * (65536.f / scale));
- data[1] = (long)(raw[1] * (65536.f / scale));
- data[2] = (long)(raw[2] * (65536.f / scale));
- return count;
-}
-
-/**
- * inv_read_q16() - Get temperature data as q16 fixed point.
- * @names: Names of sysfs files.
- * @data: 1 if device is on.
- * @timestamp: Time when data was read from device.
- * Returns number of bytes read or a negative error code.
- */
-int inv_read_temp_q16(const struct inv_sysfs_names_s *names, long *data,
- long long *timestamp)
-{
- int count = 0;
- short raw;
- static short scale, offset;
- static unsigned char first_read = 1;
-
- if (first_read) {
- count += inv_read_temp_scale(names, &scale);
- count += inv_read_temp_offset(names, &offset);
- first_read = 0;
- }
- count += inv_read_temperature_raw(names, &raw, timestamp);
- data[0] = (long)((35 + ((float)(raw - offset) / scale)) * 65536.f);
-
- return count;
-}
-
-/**
- * inv_write_fifo_rate() - Write fifo rate.
- * @names: Names of sysfs files.
- * @data: Fifo rate.
- * Returns number of bytes written or a negative error code.
- */
-int inv_write_fifo_rate(const struct inv_sysfs_names_s *names, short data)
-{
- return inv_sysfs_write((char*)names->fifo_rate, (long)data);
-}
-
-/**
- * inv_write_buffer_enable() - Enable/disable buffer in /dev.
- * @names: Names of sysfs files.
- * @data: Fifo rate.
- * Returns number of bytes written or a negative error code.
- */
-int inv_write_buffer_enable(const struct inv_sysfs_names_s *names, char data)
-{
- return inv_sysfs_write((char*)names->enable, (long)data);
-}
-
-/**
- * inv_write_power_state() - Turn device on/off.
- * @names: Names of sysfs files.
- * @data: 1 to turn on.
- * Returns number of bytes written or a negative error code.
- */
-int inv_write_power_state(const struct inv_sysfs_names_s *names, char data)
-{
- return inv_sysfs_write((char*)names->power_state, (long)data);
-}
-
-
-
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