commands: Add 'hwmon' command

Add 'hwmon' command which allows to display the readings of all
hardware monitoring sensors registered with Barebox.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 35 insertions, 0 deletions

diff --git a/commands/hwmon.c b/commands/hwmon.c
new file mode 100644
index 0000000000..ace4503c0b
--- /dev/null
+++ b/commands/hwmon.c
@@ -0,0 +1,35 @@
+#include <common.h>
+#include <command.h>
+#include <getopt.h>
+#include <linux/err.h>
+#include <linux/ctype.h>
+#include <string.h>
+#include <environment.h>
+#include <aiodev.h>
+
+static int do_hwmon(int argc, char *argv[])
+{
+	int i;
+	struct aiodevice *aiodev;
+
+	for_each_aiodevice(aiodev) {
+		for (i = 0; i < aiodev->num_channels; i++) {
+			struct aiochannel *chan = aiodev->channels[i];
+			int value;
+			int ret = aiochannel_get_value(chan, &value);
+
+			if (!ret)
+				printf("%s: %d %s\n", chan->name, value, chan->unit);
+			else
+				printf("%s: failed to read (%d)\n", chan->name, ret);
+		}
+	}
+
+	return 0;
+}
+
+BAREBOX_CMD_START(hwmon)
+	.cmd		= do_hwmon,
+	BAREBOX_CMD_DESC("query hardware sensors (HWMON)")
+	BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
+BAREBOX_CMD_END