Commit 49d916ec authored by Manuel Stahl's avatar Manuel Stahl Committed by Jonathan Cameron

staging: iio: Add tool to list IIO devices and triggers

Signed-off-by: default avatarManuel Stahl <manuel.stahl@iis.fraunhofer.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 5c1449d4
......@@ -652,3 +652,25 @@ int read_sysfs_float(char *filename, char *basedir, float *val)
free(temp);
return ret;
}
read_sysfs_string(const char *filename, const char *basedir, char *str)
{
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, "%s\n", str);
fclose(sysfsfp);
error_free:
free(temp);
return ret;
}
/*
* Industrial I/O utilities - lsiio.c
*
* Copyright (c) 2010 Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
*
* 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 <dirent.h>
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/dir.h>
#include "iio_utils.h"
static enum verbosity {
VERBLEVEL_DEFAULT, /* 0 gives lspci behaviour */
VERBLEVEL_SENSORS, /* 1 lists sensors */
} verblevel = VERBLEVEL_DEFAULT;
const char *type_device = "iio:device";
const char *type_trigger = "trigger";
static inline int check_prefix(const char *str, const char *prefix)
{
return strlen(str) > strlen(prefix) &&
strncmp(str, prefix, strlen(prefix)) == 0;
}
static inline int check_postfix(const char *str, const char *postfix)
{
return strlen(str) > strlen(postfix) &&
strcmp(str + strlen(str) - strlen(postfix), postfix) == 0;
}
static int dump_channels(const char *dev_dir_name)
{
DIR *dp;
const struct dirent *ent;
dp = opendir(dev_dir_name);
if (dp == NULL)
return -errno;
while (ent = readdir(dp), ent != NULL)
if (check_prefix(ent->d_name, "in_") &&
check_postfix(ent->d_name, "_raw")) {
printf(" %-10s\n", ent->d_name);
}
return 0;
}
static int dump_one_device(const char *dev_dir_name)
{
char name[IIO_MAX_NAME_LENGTH];
int dev_idx;
sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device),
"%i", &dev_idx);
read_sysfs_string("name", dev_dir_name, name);
printf("Device %03d: %s\n", dev_idx, name);
if (verblevel >= VERBLEVEL_SENSORS) {
int ret = dump_channels(dev_dir_name);
if (ret)
return ret;
}
return 0;
}
static int dump_one_trigger(const char *dev_dir_name)
{
char name[IIO_MAX_NAME_LENGTH];
int dev_idx;
sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger),
"%i", &dev_idx);
read_sysfs_string("name", dev_dir_name, name);
printf("Trigger %03d: %s\n", dev_idx, name);
return 0;
}
static void dump_devices(void)
{
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 industrial I/O devices available\n");
return;
}
while (ent = readdir(dp), ent != NULL) {
if (check_prefix(ent->d_name, type_device)) {
char *dev_dir_name;
asprintf(&dev_dir_name, "%s%s", iio_dir, ent->d_name);
dump_one_device(dev_dir_name);
free(dev_dir_name);
if (verblevel >= VERBLEVEL_SENSORS)
printf("\n");
}
}
rewinddir(dp);
while (ent = readdir(dp), ent != NULL) {
if (check_prefix(ent->d_name, type_trigger)) {
char *dev_dir_name;
asprintf(&dev_dir_name, "%s%s", iio_dir, ent->d_name);
dump_one_trigger(dev_dir_name);
free(dev_dir_name);
}
}
closedir(dp);
}
int main(int argc, char **argv)
{
int c, err = 0;
while ((c = getopt(argc, argv, "d:D:v")) != EOF) {
switch (c) {
case 'v':
verblevel++;
break;
case '?':
default:
err++;
break;
}
}
if (err || argc > optind) {
fprintf(stderr, "Usage: lsiio [options]...\n"
"List industrial I/O devices\n"
" -v, --verbose\n"
" Increase verbosity (may be given multiple times)\n"
);
exit(1);
}
dump_devices();
return 0;
}
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