iio: Move iio userspace applications out of staging

This patch moves iio userspace applications out of staging, to tools/iio/
and adds a Makefile in order to compile them easily. It also adds tools/iio/
to MAINTAINERS file.

Signed-off-by: Roberta Dobrescu <roberta.dobrescu@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 163 insertions, 0 deletions

diff --git a/tools/iio/lsiio.c b/tools/iio/lsiio.c
new file mode 100644
index 000000000000..98a0de098130
--- /dev/null
+++ b/tools/iio/lsiio.c
@@ -0,0 +1,163 @@
+/*
+ * 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;
+        int retval;
+
+        retval = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device),
+                        "%i", &dev_idx);
+        if (retval != 1)
+                return -EINVAL;
+        read_sysfs_string("name", dev_dir_name, name);
+        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 retval;
+
+        retval = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger),
+                        "%i", &dev_idx);
+        if (retval != 1)
+                return -EINVAL;
+        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;
+}