X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=sensors%2Fsensors%20test%20drivers%20%28c%29%2Fiio_utils.h;fp=sensors%2Fsensors%20test%20drivers%20%28c%29%2Fiio_utils.h;h=0000000000000000000000000000000000000000;hb=c9e069e6bc6ef28361a8b39731795621c957eddb;hp=cf32ae099cd68aef662b78f92936cd8cfc657265;hpb=202b21b110e9165a90e49e03b87978e812266eaa;p=matches%2FMCTX3420.git

diff --git a/sensors/sensors test drivers (c)/iio_utils.h b/sensors/sensors test drivers (c)/iio_utils.h
deleted file mode 100644
index cf32ae0..0000000
--- a/sensors/sensors test drivers (c)/iio_utils.h	
+++ /dev/null
@@ -1,654 +0,0 @@
-/* IIO - useful set of util functionality
- *
- * Copyright (c) 2008 Jonathan Cameron
- *
- * 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.
- */
-
-#include <string.h>
-#include <stdlib.h>
-#include <ctype.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <dirent.h>
-#include <errno.h>
-
-/* Made up value to limit allocation sizes */
-#define IIO_MAX_NAME_LENGTH 30
-
-#define FORMAT_SCAN_ELEMENTS_DIR "%s/scan_elements"
-#define FORMAT_TYPE_FILE "%s_type"
-
-const char *iio_dir = "/sys/bus/iio/devices/";
-
-/**
- * iioutils_break_up_name() - extract generic name from full channel name
- * @full_name: the full channel name
- * @generic_name: the output generic channel name
- **/
-inline int iioutils_break_up_name(const char *full_name,
-				  char **generic_name)
-{
-	char *current;
-	char *w, *r;
-	char *working;
-	current = strdup(full_name);
-	working = strtok(current, "_\0");
-	w = working;
-	r = working;
-
-	while (*r != '\0') {
-		if (!isdigit(*r)) {
-			*w = *r;
-			w++;
-		}
-		r++;
-	}
-	*w = '\0';
-	*generic_name = strdup(working);
-	free(current);
-
-	return 0;
-}
-
-/**
- * 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;
-};
-
-/**
- * iioutils_get_type() - find and process _type attribute data
- * @is_signed: output whether channel is signed
- * @bytes: output how many bytes the channel storage occupies
- * @mask: output a bit mask for the raw data
- * @be: big endian
- * @device_dir: the iio device directory
- * @name: the channel name
- * @generic_name: the channel type name
- **/
-inline int iioutils_get_type(unsigned *is_signed,
-			     unsigned *bytes,
-			     unsigned *bits_used,
-			     unsigned *shift,
-			     uint64_t *mask,
-			     unsigned *be,
-			     const char *device_dir,
-			     const char *name,
-			     const char *generic_name)
-{
-	FILE *sysfsfp;
-	int ret;
-	DIR *dp;
-	char *scan_el_dir, *builtname, *builtname_generic, *filename = 0;
-	char signchar, endianchar;
-	unsigned padint;
-	const struct dirent *ent;
-
-	ret = asprintf(&scan_el_dir, FORMAT_SCAN_ELEMENTS_DIR, device_dir);
-	if (ret < 0) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
-	ret = asprintf(&builtname, FORMAT_TYPE_FILE, name);
-	if (ret < 0) {
-		ret = -ENOMEM;
-		goto error_free_scan_el_dir;
-	}
-	ret = asprintf(&builtname_generic, FORMAT_TYPE_FILE, generic_name);
-	if (ret < 0) {
-		ret = -ENOMEM;
-		goto error_free_builtname;
-	}
-
-	dp = opendir(scan_el_dir);
-	if (dp == NULL) {
-		ret = -errno;
-		goto error_free_builtname_generic;
-	}
-	while (ent = readdir(dp), ent != NULL)
-		/*
-		 * Do we allow devices to override a generic name with
-		 * a specific one?
-		 */
-		if ((strcmp(builtname, ent->d_name) == 0) ||
-		    (strcmp(builtname_generic, ent->d_name) == 0)) {
-			ret = asprintf(&filename,
-				       "%s/%s", scan_el_dir, ent->d_name);
-			if (ret < 0) {
-				ret = -ENOMEM;
-				goto error_closedir;
-			}
-			sysfsfp = fopen(filename, "r");
-			if (sysfsfp == NULL) {
-				printf("failed to open %s\n", filename);
-				ret = -errno;
-				goto error_free_filename;
-			}
-
-			ret = fscanf(sysfsfp,
-				     "%ce:%c%u/%u>>%u",
-				     &endianchar,
-				     &signchar,
-				     bits_used,
-				     &padint, shift);
-			if (ret < 0) {
-				printf("failed to pass scan type description\n");
-				ret = -errno;
-				goto error_close_sysfsfp;
-			}
-			*be = (endianchar == 'b');
-			*bytes = padint / 8;
-			if (*bits_used == 64)
-				*mask = ~0;
-			else
-				*mask = (1 << *bits_used) - 1;
-			if (signchar == 's')
-				*is_signed = 1;
-			else
-				*is_signed = 0;
-			fclose(sysfsfp);
-			free(filename);
-
-			filename = 0;
-			sysfsfp = 0;
-		}
-error_close_sysfsfp:
-	if (sysfsfp)
-		fclose(sysfsfp);
-error_free_filename:
-	if (filename)
-		free(filename);
-error_closedir:
-	closedir(dp);
-error_free_builtname_generic:
-	free(builtname_generic);
-error_free_builtname:
-	free(builtname);
-error_free_scan_el_dir:
-	free(scan_el_dir);
-error_ret:
-	return ret;
-}
-
-inline int iioutils_get_param_float(float *output,
-				    const char *param_name,
-				    const char *device_dir,
-				    const char *name,
-				    const char *generic_name)
-{
-	FILE *sysfsfp;
-	int ret;
-	DIR *dp;
-	char *builtname, *builtname_generic;
-	char *filename = NULL;
-	const struct dirent *ent;
-
-	ret = asprintf(&builtname, "%s_%s", name, param_name);
-	if (ret < 0) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
-	ret = asprintf(&builtname_generic,
-		       "%s_%s", generic_name, param_name);
-	if (ret < 0) {
-		ret = -ENOMEM;
-		goto error_free_builtname;
-	}
-	dp = opendir(device_dir);
-	if (dp == NULL) {
-		ret = -errno;
-		goto error_free_builtname_generic;
-	}
-	while (ent = readdir(dp), ent != NULL)
-		if ((strcmp(builtname, ent->d_name) == 0) ||
-		    (strcmp(builtname_generic, ent->d_name) == 0)) {
-			ret = asprintf(&filename,
-				       "%s/%s", device_dir, ent->d_name);
-			if (ret < 0) {
-				ret = -ENOMEM;
-				goto error_closedir;
-			}
-			sysfsfp = fopen(filename, "r");
-			if (!sysfsfp) {
-				ret = -errno;
-				goto error_free_filename;
-			}
-			fscanf(sysfsfp, "%f", output);
-			break;
-		}
-error_free_filename:
-	if (filename)
-		free(filename);
-error_closedir:
-	closedir(dp);
-error_free_builtname_generic:
-	free(builtname_generic);
-error_free_builtname:
-	free(builtname);
-error_ret:
-	return ret;
-}
-
-/**
- * bsort_channel_array_by_index() - reorder so that the array is in index order
- *
- **/
-
-inline void bsort_channel_array_by_index(struct iio_channel_info **ci_array,
-					 int cnt)
-{
-
-	struct iio_channel_info temp;
-	int x, y;
-
-	for (x = 0; x < cnt; x++)
-		for (y = 0; y < (cnt - 1); y++)
-			if ((*ci_array)[y].index > (*ci_array)[y+1].index) {
-				temp = (*ci_array)[y + 1];
-				(*ci_array)[y + 1] = (*ci_array)[y];
-				(*ci_array)[y] = temp;
-			}
-}
-
-/**
- * build_channel_array() - function to figure out what channels are present
- * @device_dir: the IIO device directory in sysfs
- * @
- **/
-inline int build_channel_array(const char *device_dir,
-			      struct iio_channel_info **ci_array,
-			      int *counter)
-{
-	DIR *dp;
-	FILE *sysfsfp;
-	int count, i;
-	struct iio_channel_info *current;
-	int ret;
-	const struct dirent *ent;
-	char *scan_el_dir;
-	char *filename;
-
-	*counter = 0;
-	ret = asprintf(&scan_el_dir, FORMAT_SCAN_ELEMENTS_DIR, device_dir);
-	if (ret < 0) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
-	dp = opendir(scan_el_dir);
-	if (dp == NULL) {
-		ret = -errno;
-		goto error_free_name;
-	}
-	while (ent = readdir(dp), ent != NULL)
-		if (strcmp(ent->d_name + strlen(ent->d_name) - strlen("_en"),
-			   "_en") == 0) {
-			ret = asprintf(&filename,
-				       "%s/%s", scan_el_dir, ent->d_name);
-			if (ret < 0) {
-				ret = -ENOMEM;
-				goto error_close_dir;
-			}
-			sysfsfp = fopen(filename, "r");
-			if (sysfsfp == NULL) {
-				ret = -errno;
-				free(filename);
-				goto error_close_dir;
-			}
-			fscanf(sysfsfp, "%u", &ret);
-			if (ret == 1)
-				(*counter)++;
-			fclose(sysfsfp);
-			free(filename);
-		}
-	*ci_array = malloc(sizeof(**ci_array) * (*counter));
-	if (*ci_array == NULL) {
-		ret = -ENOMEM;
-		goto error_close_dir;
-	}
-	seekdir(dp, 0);
-	count = 0;
-	while (ent = readdir(dp), ent != NULL) {
-		if (strcmp(ent->d_name + strlen(ent->d_name) - strlen("_en"),
-			   "_en") == 0) {
-			current = &(*ci_array)[count++];
-			ret = asprintf(&filename,
-				       "%s/%s", scan_el_dir, ent->d_name);
-			if (ret < 0) {
-				ret = -ENOMEM;
-				/* decrement count to avoid freeing name */
-				count--;
-				goto error_cleanup_array;
-			}
-			sysfsfp = fopen(filename, "r");
-			if (sysfsfp == NULL) {
-				free(filename);
-				ret = -errno;
-				goto error_cleanup_array;
-			}
-			fscanf(sysfsfp, "%u", &current->enabled);
-			fclose(sysfsfp);
-
-			if (!current->enabled) {
-				free(filename);
-				count--;
-				continue;
-			}
-
-			current->scale = 1.0;
-			current->offset = 0;
-			current->name = strndup(ent->d_name,
-						strlen(ent->d_name) -
-						strlen("_en"));
-			if (current->name == NULL) {
-				free(filename);
-				ret = -ENOMEM;
-				goto error_cleanup_array;
-			}
-			/* Get the generic and specific name elements */
-			ret = iioutils_break_up_name(current->name,
-						     &current->generic_name);
-			if (ret) {
-				free(filename);
-				goto error_cleanup_array;
-			}
-			ret = asprintf(&filename,
-				       "%s/%s_index",
-				       scan_el_dir,
-				       current->name);
-			if (ret < 0) {
-				free(filename);
-				ret = -ENOMEM;
-				goto error_cleanup_array;
-			}
-			sysfsfp = fopen(filename, "r");
-			fscanf(sysfsfp, "%u", &current->index);
-			fclose(sysfsfp);
-			free(filename);
-			/* Find the scale */
-			ret = iioutils_get_param_float(&current->scale,
-						       "scale",
-						       device_dir,
-						       current->name,
-						       current->generic_name);
-			if (ret < 0)
-				goto error_cleanup_array;
-			ret = iioutils_get_param_float(&current->offset,
-						       "offset",
-						       device_dir,
-						       current->name,
-						       current->generic_name);
-			if (ret < 0)
-				goto error_cleanup_array;
-			ret = iioutils_get_type(&current->is_signed,
-						&current->bytes,
-						&current->bits_used,
-						&current->shift,
-						&current->mask,
-						&current->be,
-						device_dir,
-						current->name,
-						current->generic_name);
-		}
-	}
-
-	closedir(dp);
-	/* reorder so that the array is in index order */
-	bsort_channel_array_by_index(ci_array, *counter);
-
-	return 0;
-
-error_cleanup_array:
-	for (i = count - 1;  i >= 0; i--)
-		free((*ci_array)[i].name);
-	free(*ci_array);
-error_close_dir:
-	closedir(dp);
-error_free_name:
-	free(scan_el_dir);
-error_ret:
-	return ret;
-}
-
-/**
- * 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.
- **/
-inline int find_type_by_name(const char *name, const char *type)
-{
-	const struct dirent *ent;
-	int number, numstrlen;
-
-	FILE *nameFile;
-	DIR *dp;
-	char thisname[IIO_MAX_NAME_LENGTH];
-	char *filename;
-
-	dp = opendir(iio_dir);
-	if (dp == NULL) {
-		printf("No industrialio devices available\n");
-		return -ENODEV;
-	}
-
-	while (ent = readdir(dp), ent != NULL) {
-		if (strcmp(ent->d_name, ".") != 0 &&
-			strcmp(ent->d_name, "..") != 0 &&
-			strlen(ent->d_name) > strlen(type) &&
-			strncmp(ent->d_name, type, strlen(type)) == 0) {
-			numstrlen = sscanf(ent->d_name + strlen(type),
-					   "%d",
-					   &number);
-			/* verify the next character is not a colon */
-			if (strncmp(ent->d_name + strlen(type) + numstrlen,
-					":",
-					1) != 0) {
-				filename = malloc(strlen(iio_dir)
-						+ strlen(type)
-						+ numstrlen
-						+ 6);
-				if (filename == NULL) {
-					closedir(dp);
-					return -ENOMEM;
-				}
-				sprintf(filename, "%s%s%d/name",
-					iio_dir,
-					type,
-					number);
-				nameFile = fopen(filename, "r");
-				if (!nameFile) {
-					free(filename);
-					continue;
-				}
-				free(filename);
-				fscanf(nameFile, "%s", thisname);
-				fclose(nameFile);
-				if (strcmp(name, thisname) == 0) {
-					closedir(dp);
-					return number;
-				}
-			}
-		}
-	}
-	closedir(dp);
-	return -ENODEV;
-}
-
-inline int _write_sysfs_int(char *filename, char *basedir, int val, int verify)
-{
-	int ret;
-	FILE *sysfsfp;
-	int test;
-	char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
-	if (temp == NULL)
-		return -ENOMEM;
-	sprintf(temp, "%s/%s", basedir, filename);
-	sysfsfp = fopen(temp, "w");
-	if (sysfsfp == NULL) {
-		printf("failed to open %s\n", temp);
-		ret = -errno;
-		goto error_free;
-	}
-	fprintf(sysfsfp, "%d", val);
-	fclose(sysfsfp);
-	if (verify) {
-		sysfsfp = fopen(temp, "r");
-		if (sysfsfp == NULL) {
-			printf("failed to open %s\n", temp);
-			ret = -errno;
-			goto error_free;
-		}
-		fscanf(sysfsfp, "%d", &test);
-		fclose(sysfsfp);
-		if (test != val) {
-			printf("Possible failure in int write %d to %s%s\n",
-				val,
-				basedir,
-				filename);
-			ret = -1;
-		}
-	}
-error_free:
-	free(temp);
-	return ret;
-}
-
-int write_sysfs_int(char *filename, char *basedir, int val)
-{
-	return _write_sysfs_int(filename, basedir, val, 0);
-}
-
-int write_sysfs_int_and_verify(char *filename, char *basedir, int val)
-{
-	return _write_sysfs_int(filename, basedir, val, 1);
-}
-
-int _write_sysfs_string(char *filename, char *basedir, char *val, int verify)
-{
-	int ret = 0;
-	FILE  *sysfsfp;
-	char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
-	if (temp == NULL) {
-		printf("Memory allocation failed\n");
-		return -ENOMEM;
-	}
-	sprintf(temp, "%s/%s", basedir, filename);
-	sysfsfp = fopen(temp, "w");
-	if (sysfsfp == NULL) {
-		printf("Could not open %s\n", temp);
-		ret = -errno;
-		goto error_free;
-	}
-	fprintf(sysfsfp, "%s", val);
-	fclose(sysfsfp);
-	if (verify) {
-		sysfsfp = fopen(temp, "r");
-		if (sysfsfp == NULL) {
-			printf("could not open file to verify\n");
-			ret = -errno;
-			goto error_free;
-		}
-		fscanf(sysfsfp, "%s", temp);
-		fclose(sysfsfp);
-		if (strcmp(temp, val) != 0) {
-			printf("Possible failure in string write of %s "
-				"Should be %s "
-				"written to %s\%s\n",
-				temp,
-				val,
-				basedir,
-				filename);
-			ret = -1;
-		}
-	}
-error_free:
-	free(temp);
-
-	return ret;
-}
-
-/**
- * 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)
-{
-	return _write_sysfs_string(filename, basedir, val, 1);
-}
-
-int write_sysfs_string(char *filename, char *basedir, char *val)
-{
-	return _write_sysfs_string(filename, basedir, val, 0);
-}
-
-int read_sysfs_posint(char *filename, char *basedir)
-{
-	int ret;
-	FILE  *sysfsfp;
-	char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
-	if (temp == NULL) {
-		printf("Memory allocation failed");
-		return -ENOMEM;
-	}
-	sprintf(temp, "%s/%s", basedir, filename);
-	sysfsfp = fopen(temp, "r");
-	if (sysfsfp == NULL) {
-		ret = -errno;
-		goto error_free;
-	}
-	fscanf(sysfsfp, "%d\n", &ret);
-	fclose(sysfsfp);
-error_free:
-	free(temp);
-	return ret;
-}
-
-int read_sysfs_float(char *filename, char *basedir, float *val)
-{
-	float ret = 0;
-	FILE  *sysfsfp;
-	char *temp = malloc(strlen(basedir) + strlen(filename) + 2);
-	if (temp == NULL) {
-		printf("Memory allocation failed");
-		return -ENOMEM;
-	}
-	sprintf(temp, "%s/%s", basedir, filename);
-	sysfsfp = fopen(temp, "r");
-	if (sysfsfp == NULL) {
-		ret = -errno;
-		goto error_free;
-	}
-	fscanf(sysfsfp, "%f\n", val);
-	fclose(sysfsfp);
-error_free:
-	free(temp);
-	return ret;
-}