diff --git a/sound/firewire/Kconfig b/sound/firewire/Kconfig
index 38027bd..b5035b0 100644
--- a/sound/firewire/Kconfig
+++ b/sound/firewire/Kconfig
@@ -30,6 +30,7 @@ config SND_OXFW
 	tristate "Oxford OXFW970/971 chipset support"
 	select SND_PCM
 	select SND_FIREWIRE_LIB
+	select SND_RAWMIDI
 	help
 	  Say Y here to include support for Firewire devices based on
 	  Oxford Semiconductor OXFW970/971 chipset.
diff --git a/sound/firewire/oxfw/Makefile b/sound/firewire/oxfw/Makefile
index 4ee2c97..5f65270 100644
--- a/sound/firewire/oxfw/Makefile
+++ b/sound/firewire/oxfw/Makefile
@@ -1,3 +1,3 @@
 snd-oxfw-objs := oxfw_command.o oxfw_stream.o oxfw_control.o oxfw_proc.o \
-		 oxfw_pcm.o oxfw.o
+		 oxfw_midi.o oxfw_pcm.o oxfw.o
 obj-m += snd-oxfw.o
diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c
index a9e21c0..5640547 100644
--- a/sound/firewire/oxfw/oxfw.c
+++ b/sound/firewire/oxfw/oxfw.c
@@ -119,6 +119,7 @@ static int oxfw_probe(struct fw_unit *unit,
 	mutex_init(&oxfw->mutex);
 	oxfw->unit = unit;
 	oxfw->device_info = (const struct device_info *)id->driver_data;
+	spin_lock_init(&oxfw->lock);
 
 	err = snd_oxfw_stream_discover(oxfw);
 	if (err < 0)
@@ -140,6 +141,12 @@ static int oxfw_probe(struct fw_unit *unit,
 
 	snd_oxfw_proc_init(oxfw);
 
+	if ((oxfw->midi_input_ports > 0) || (oxfw->midi_output_ports > 0)) {
+		err = snd_oxfw_create_midi(oxfw);
+		if (err < 0)
+			goto error;
+	}
+
 	err = snd_oxfw_stream_init_simplex(oxfw, &oxfw->rx_stream);
 	if (err < 0)
 		goto error;
diff --git a/sound/firewire/oxfw/oxfw.h b/sound/firewire/oxfw/oxfw.h
index 81b6627..bcaab01 100644
--- a/sound/firewire/oxfw/oxfw.h
+++ b/sound/firewire/oxfw/oxfw.h
@@ -19,6 +19,7 @@
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/info.h>
+#include <sound/rawmidi.h>
 
 #include "../lib.h"
 #include "../fcp.h"
@@ -47,6 +48,7 @@ struct snd_oxfw {
 	struct fw_unit *unit;
 	const struct device_info *device_info;
 	struct mutex mutex;
+	spinlock_t lock;
 
 	bool has_output;
 	struct snd_oxfw_stream_formation
@@ -60,6 +62,9 @@ struct snd_oxfw {
 	atomic_t capture_substreams;
 	atomic_t playback_substreams;
 
+	unsigned int midi_input_ports;
+	unsigned int midi_output_ports;
+
 	bool mute;
 	s16 volume[6];
 	s16 volume_min;
@@ -119,3 +124,5 @@ int snd_oxfw_create_pcm(struct snd_oxfw *oxfw);
 int snd_oxfw_create_mixer(struct snd_oxfw *oxfw);
 
 void snd_oxfw_proc_init(struct snd_oxfw *oxfw);
+
+int snd_oxfw_create_midi(struct snd_oxfw *oxfw);
diff --git a/sound/firewire/oxfw/oxfw_midi.c b/sound/firewire/oxfw/oxfw_midi.c
new file mode 100644
index 0000000..04be550
--- /dev/null
+++ b/sound/firewire/oxfw/oxfw_midi.c
@@ -0,0 +1,148 @@
+/*
+ * oxfw_midi.c - a part of driver for OXFW970/971 based devices
+ *
+ * Copyright (c) 2014 Takashi Sakamoto
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "oxfw.h"
+
+static int midi_capture_open(struct snd_rawmidi_substream *substream)
+{
+	struct snd_oxfw *oxfw = substream->rmidi->private_data;
+
+	atomic_inc(&oxfw->capture_substreams);
+	return snd_oxfw_stream_start_simplex(oxfw, &oxfw->tx_stream, 0, 0);
+}
+
+static int midi_playback_open(struct snd_rawmidi_substream *substream)
+{
+	struct snd_oxfw *oxfw = substream->rmidi->private_data;
+
+	atomic_inc(&oxfw->playback_substreams);
+	return snd_oxfw_stream_start_simplex(oxfw, &oxfw->rx_stream, 0, 0);
+}
+
+static int midi_capture_close(struct snd_rawmidi_substream *substream)
+{
+	struct snd_oxfw *oxfw = substream->rmidi->private_data;
+
+	atomic_dec(&oxfw->capture_substreams);
+	snd_oxfw_stream_stop_simplex(oxfw, &oxfw->tx_stream);
+
+	return 0;
+}
+
+static int midi_playback_close(struct snd_rawmidi_substream *substream)
+{
+	struct snd_oxfw *oxfw = substream->rmidi->private_data;
+
+	atomic_dec(&oxfw->playback_substreams);
+	snd_oxfw_stream_stop_simplex(oxfw, &oxfw->rx_stream);
+
+	return 0;
+}
+
+static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
+{
+	struct snd_oxfw *oxfw = substrm->rmidi->private_data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&oxfw->lock, flags);
+
+	if (up)
+		amdtp_stream_midi_trigger(&oxfw->tx_stream,
+					  substrm->number, substrm);
+	else
+		amdtp_stream_midi_trigger(&oxfw->tx_stream,
+					  substrm->number, NULL);
+
+	spin_unlock_irqrestore(&oxfw->lock, flags);
+}
+
+static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
+{
+	struct snd_oxfw *oxfw = substrm->rmidi->private_data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&oxfw->lock, flags);
+
+	if (up)
+		amdtp_stream_midi_trigger(&oxfw->rx_stream,
+					  substrm->number, substrm);
+	else
+		amdtp_stream_midi_trigger(&oxfw->rx_stream,
+					  substrm->number, NULL);
+
+	spin_unlock_irqrestore(&oxfw->lock, flags);
+}
+
+static struct snd_rawmidi_ops midi_capture_ops = {
+	.open		= midi_capture_open,
+	.close		= midi_capture_close,
+	.trigger	= midi_capture_trigger,
+};
+
+static struct snd_rawmidi_ops midi_playback_ops = {
+	.open		= midi_playback_open,
+	.close		= midi_playback_close,
+	.trigger	= midi_playback_trigger,
+};
+
+static void set_midi_substream_names(struct snd_oxfw *oxfw,
+				     struct snd_rawmidi_str *str)
+{
+	struct snd_rawmidi_substream *subs;
+
+	list_for_each_entry(subs, &str->substreams, list) {
+		snprintf(subs->name, sizeof(subs->name),
+			 "%s MIDI %d",
+			 oxfw->card->shortname, subs->number + 1);
+	}
+}
+
+int snd_oxfw_create_midi(struct snd_oxfw *oxfw)
+{
+	struct snd_rawmidi *rmidi;
+	struct snd_rawmidi_str *str;
+	int err;
+
+	/* create midi ports */
+	err = snd_rawmidi_new(oxfw->card, oxfw->card->driver, 0,
+			      oxfw->midi_output_ports, oxfw->midi_input_ports,
+			      &rmidi);
+	if (err < 0)
+		return err;
+
+	snprintf(rmidi->name, sizeof(rmidi->name),
+		 "%s MIDI", oxfw->card->shortname);
+	rmidi->private_data = oxfw;
+
+	if (oxfw->midi_input_ports > 0) {
+		rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
+
+		snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
+				    &midi_capture_ops);
+
+		str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
+
+		set_midi_substream_names(oxfw, str);
+	}
+
+	if (oxfw->midi_output_ports > 0) {
+		rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
+
+		snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
+				    &midi_playback_ops);
+
+		str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
+
+		set_midi_substream_names(oxfw, str);
+	}
+
+	if ((oxfw->midi_output_ports > 0) && (oxfw->midi_input_ports > 0))
+		rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
+
+	return 0;
+}
diff --git a/sound/firewire/oxfw/oxfw_stream.c b/sound/firewire/oxfw/oxfw_stream.c
index 6521899..858e1e6 100644
--- a/sound/firewire/oxfw/oxfw_stream.c
+++ b/sound/firewire/oxfw/oxfw_stream.c
@@ -262,6 +262,8 @@ int snd_oxfw_stream_start_simplex(struct snd_oxfw *oxfw,
 			"fail to get sampling rate: %d\n", err);
 		goto end;
 	}
+	if (rate == 0)
+		rate = curr_rate;
 	if (curr_rate != rate) {
 		/* Stop streams safely. */
 		if (opposite != NULL) {
@@ -575,6 +577,7 @@ end:
 int snd_oxfw_stream_discover(struct snd_oxfw *oxfw)
 {
 	u8 plugs[AVC_PLUG_INFO_BUF_BYTES];
+	unsigned int i;
 	int err;
 
 	/* the number of plugs for isoc in/out, ext in/out  */
@@ -598,8 +601,19 @@ int snd_oxfw_stream_discover(struct snd_oxfw *oxfw)
 	}
 
 	/* use iPCR[0] if exists */
-	if (plugs[0] > 0)
+	if (plugs[0] > 0) {
 		err = fill_stream_formations(oxfw, AVC_GENERAL_PLUG_DIR_IN, 0);
+		if (err < 0)
+			goto end;
+	}
+
+	/* if its stream has MIDI conformant data channel, add one MIDI port */
+	for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
+		if (oxfw->tx_stream_formations[i].midi > 0)
+			oxfw->midi_input_ports = 1;
+		if (oxfw->rx_stream_formations[i].midi > 0)
+			oxfw->midi_output_ports = 1;
+	}
 end:
 	return err;
 }
