1 files changed, 188 insertions, 0 deletions
diff --git a/tools/iio/lsiio.c b/tools/iio/lsiio.c
new file mode 100644
index 0000000000..2cf56fb244
--- /dev/null
+++ b/tools/iio/lsiio.c
@@ -0,0 +1,188 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Industrial I/O utilities - lsiio.c
+ *
+ * Copyright (c) 2010 Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
+ */
+
+#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)
+		return -errno;
+
+	while (ent = readdir(dp), ent)
+		if (check_prefix(ent->d_name, "in_") &&
+		   (check_postfix(ent->d_name, "_raw") ||
+		    check_postfix(ent->d_name, "_input")))
+			printf("   %-10s\n", ent->d_name);
+
+	return (closedir(dp) == -1) ? -errno : 0;
+}
+
+static int dump_one_device(const char *dev_dir_name)
+{
+	char name[IIO_MAX_NAME_LENGTH];
+	int dev_idx;
+	int ret;
+
+	ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device), "%i",
+		     &dev_idx);
+	if (ret != 1)
+		return -EINVAL;
+
+	ret = read_sysfs_string("name", dev_dir_name, name);
+	if (ret < 0)
+		return ret;
+
+	printf("Device %03d: %s\n", dev_idx, name);
+
+	if (verblevel >= VERBLEVEL_SENSORS)
+		return dump_channels(dev_dir_name);
+
+	return 0;
+}
+
+static int dump_one_trigger(const char *dev_dir_name)
+{
+	char name[IIO_MAX_NAME_LENGTH];
+	int dev_idx;
+	int ret;
+
+	ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger),
+		     "%i", &dev_idx);
+	if (ret != 1)
+		return -EINVAL;
+
+	ret = read_sysfs_string("name", dev_dir_name, name);
+	if (ret < 0)
+		return ret;
+
+	printf("Trigger %03d: %s\n", dev_idx, name);
+
+	return 0;
+}
+
+static int dump_devices(void)
+{
+	const struct dirent *ent;
+	int ret;
+	DIR *dp;
+
+	dp = opendir(iio_dir);
+	if (!dp) {
+		fprintf(stderr, "No industrial I/O devices available\n");
+		return -ENODEV;
+	}
+
+	while (ent = readdir(dp), ent) {
+		if (check_prefix(ent->d_name, type_device)) {
+			char *dev_dir_name;
+
+			if (asprintf(&dev_dir_name, "%s%s", iio_dir,
+				     ent->d_name) < 0) {
+				ret = -ENOMEM;
+				goto error_close_dir;
+			}
+
+			ret = dump_one_device(dev_dir_name);
+			if (ret) {
+				free(dev_dir_name);
+				goto error_close_dir;
+			}
+
+			free(dev_dir_name);
+			if (verblevel >= VERBLEVEL_SENSORS)
+				printf("\n");
+		}
+	}
+	rewinddir(dp);
+	while (ent = readdir(dp), ent) {
+		if (check_prefix(ent->d_name, type_trigger)) {
+			char *dev_dir_name;
+
+			if (asprintf(&dev_dir_name, "%s%s", iio_dir,
+				     ent->d_name) < 0) {
+				ret = -ENOMEM;
+				goto error_close_dir;
+			}
+
+			ret = dump_one_trigger(dev_dir_name);
+			if (ret) {
+				free(dev_dir_name);
+				goto error_close_dir;
+			}
+
+			free(dev_dir_name);
+		}
+	}
+
+	return (closedir(dp) == -1) ? -errno : 0;
+
+error_close_dir:
+	if (closedir(dp) == -1)
+		perror("dump_devices(): Failed to close directory");
+
+	return ret;
+}
+
+int main(int argc, char **argv)
+{
+	int c, err = 0;
+
+	while ((c = getopt(argc, argv, "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  Increase verbosity (may be given multiple times)\n");
+		exit(1);
+	}
+
+	return dump_devices();
+}