diff --git a/sound/firewire/dice/dice-pcm.c b/sound/firewire/dice/dice-pcm.c
index b185391dc021..b9ce0264a2d9 100644
--- a/sound/firewire/dice/dice-pcm.c
+++ b/sound/firewire/dice/dice-pcm.c
@@ -181,7 +181,7 @@ static int playback_hw_free(struct snd_pcm_substream *substream)
 	struct snd_dice *dice = substream->private_data;
 
 	mutex_lock(&dice->mutex);
-	snd_dice_stream_stop(dice);
+	snd_dice_stream_stop_duplex(dice);
 	mutex_unlock(&dice->mutex);
 
 	return snd_pcm_lib_free_vmalloc_buffer(substream);
@@ -193,7 +193,7 @@ static int playback_prepare(struct snd_pcm_substream *substream)
 	int err;
 
 	mutex_lock(&dice->mutex);
-	err = snd_dice_stream_start(dice, substream->runtime->rate);
+	err = snd_dice_stream_start_duplex(dice, substream->runtime->rate);
 	mutex_unlock(&dice->mutex);
 	if (err >= 0)
 		amdtp_stream_pcm_prepare(&dice->rx_stream);
diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c
index b9d7a4846459..e60b84d7a0f6 100644
--- a/sound/firewire/dice/dice-stream.c
+++ b/sound/firewire/dice/dice-stream.c
@@ -41,55 +41,79 @@ int snd_dice_stream_get_rate_mode(struct snd_dice *dice, unsigned int rate,
 	return -EINVAL;
 }
 
-static void release_resources(struct snd_dice *dice)
+static void release_resources(struct snd_dice *dice,
+			      struct fw_iso_resources *resources)
 {
 	unsigned int channel;
 
 	/* Reset channel number */
 	channel = cpu_to_be32((u32)-1);
-	snd_dice_transaction_write_rx(dice, RX_ISOCHRONOUS, &channel, 4);
+	if (resources == &dice->tx_resources)
+		snd_dice_transaction_write_tx(dice, TX_ISOCHRONOUS,
+					      &channel, 4);
+	else
+		snd_dice_transaction_write_rx(dice, RX_ISOCHRONOUS,
+					      &channel, 4);
 
-	fw_iso_resources_free(&dice->rx_resources);
+	fw_iso_resources_free(resources);
 }
 
-static int keep_resources(struct snd_dice *dice, unsigned int max_payload_bytes)
+static int keep_resources(struct snd_dice *dice,
+			  struct fw_iso_resources *resources,
+			  unsigned int max_payload_bytes)
 {
 	unsigned int channel;
 	int err;
 
-	err = fw_iso_resources_allocate(&dice->rx_resources, max_payload_bytes,
+	err = fw_iso_resources_allocate(resources, max_payload_bytes,
 				fw_parent_device(dice->unit)->max_speed);
 	if (err < 0)
 		goto end;
 
 	/* Set channel number */
-	channel = cpu_to_be32(dice->rx_resources.channel);
-	err = snd_dice_transaction_write_rx(dice, RX_ISOCHRONOUS,
-					    &channel, 4);
+	channel = cpu_to_be32(resources->channel);
+	if (resources == &dice->tx_resources)
+		err = snd_dice_transaction_write_tx(dice, TX_ISOCHRONOUS,
+						    &channel, 4);
+	else
+		err = snd_dice_transaction_write_rx(dice, RX_ISOCHRONOUS,
+						    &channel, 4);
 	if (err < 0)
-		release_resources(dice);
+		release_resources(dice, resources);
 end:
 	return err;
 }
 
-static void stop_stream(struct snd_dice *dice)
+static void stop_stream(struct snd_dice *dice, struct amdtp_stream *stream)
 {
-	if (!amdtp_stream_running(&dice->rx_stream))
-		return;
+	amdtp_stream_pcm_abort(stream);
+	amdtp_stream_stop(stream);
 
-	amdtp_stream_pcm_abort(&dice->rx_stream);
-	amdtp_stream_stop(&dice->rx_stream);
-	release_resources(dice);
+	if (stream == &dice->tx_stream)
+		release_resources(dice, &dice->tx_resources);
+	else
+		release_resources(dice, &dice->rx_resources);
 }
 
-static int start_stream(struct snd_dice *dice, unsigned int rate)
+static int start_stream(struct snd_dice *dice, struct amdtp_stream *stream,
+			unsigned int rate)
 {
+	struct fw_iso_resources *resources;
 	unsigned int i, mode, pcm_chs, midi_ports;
 	int err;
 
 	err = snd_dice_stream_get_rate_mode(dice, rate, &mode);
 	if (err < 0)
 		goto end;
+	if (stream == &dice->tx_stream) {
+		resources = &dice->tx_resources;
+		pcm_chs = dice->tx_channels[mode];
+		midi_ports = dice->tx_midi_ports[mode];
+	} else {
+		resources = &dice->rx_resources;
+		pcm_chs = dice->rx_channels[mode];
+		midi_ports = dice->rx_midi_ports[mode];
+	}
 
 	/*
 	 * At 176.4/192.0 kHz, Dice has a quirk to transfer two PCM frames in
@@ -101,51 +125,71 @@ static int start_stream(struct snd_dice *dice, unsigned int rate)
 	 * For this quirk, blocking mode is required and PCM buffer size should
 	 * be aligned to SYT_INTERVAL.
 	 */
-	pcm_chs = dice->rx_channels[mode];
-	midi_ports = dice->rx_midi_ports[mode];
 	if (mode > 1) {
 		rate /= 2;
 		pcm_chs *= 2;
-		dice->rx_stream.double_pcm_frames = true;
+		stream->double_pcm_frames = true;
 	} else {
-		dice->rx_stream.double_pcm_frames = false;
+		stream->double_pcm_frames = false;
 	}
 
-	amdtp_stream_set_parameters(&dice->rx_stream, rate,
-				    pcm_chs, midi_ports);
+	amdtp_stream_set_parameters(stream, rate, pcm_chs, midi_ports);
 	if (mode > 1) {
 		pcm_chs /= 2;
 
 		for (i = 0; i < pcm_chs; i++) {
-			dice->rx_stream.pcm_positions[i] = i * 2;
-			dice->rx_stream.pcm_positions[i + pcm_chs] = i * 2 + 1;
+			stream->pcm_positions[i] = i * 2;
+			stream->pcm_positions[i + pcm_chs] = i * 2 + 1;
 		}
 	}
 
-	err = keep_resources(dice,
-			     amdtp_stream_get_max_payload(&dice->rx_stream));
+	err = keep_resources(dice, resources,
+			     amdtp_stream_get_max_payload(stream));
 	if (err < 0) {
 		dev_err(&dice->unit->device,
 			"fail to keep isochronous resources\n");
 		goto end;
 	}
 
-	err = amdtp_stream_start(&dice->rx_stream, dice->rx_resources.channel,
+	err = amdtp_stream_start(stream, resources->channel,
 				 fw_parent_device(dice->unit)->max_speed);
 	if (err < 0)
-		release_resources(dice);
+		release_resources(dice, resources);
 end:
 	return err;
 }
 
-int snd_dice_stream_start(struct snd_dice *dice, unsigned int rate)
+static int get_sync_mode(struct snd_dice *dice, enum cip_flags *sync_mode)
 {
+	/* Currently, clock source is fixed at SYT-Match mode. */
+	*sync_mode = 0;
+	return 0;
+}
+
+int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)
+{
+	struct amdtp_stream *master, *slave;
 	unsigned int curr_rate;
-	int err;
+	enum cip_flags sync_mode;
+	int err = 0;
+
+	if (dice->substreams_counter == 0)
+		goto end;
+
+	err = get_sync_mode(dice, &sync_mode);
+	if (err < 0)
+		goto end;
+	if (sync_mode == CIP_SYNC_TO_DEVICE) {
+		master = &dice->tx_stream;
+		slave  = &dice->rx_stream;
+	} else {
+		master = &dice->rx_stream;
+		slave  = &dice->tx_stream;
+	}
 
 	/* Some packet queueing errors. */
-	if (amdtp_streaming_error(&dice->rx_stream))
-		stop_stream(dice);
+	if (amdtp_streaming_error(master) || amdtp_streaming_error(slave))
+		stop_stream(dice, master);
 
 	/* Stop stream if rate is different. */
 	err = snd_dice_transaction_get_rate(dice, &curr_rate);
@@ -155,11 +199,14 @@ int snd_dice_stream_start(struct snd_dice *dice, unsigned int rate)
 		goto end;
 	}
 	if (rate != curr_rate)
-		stop_stream(dice);
+		stop_stream(dice, master);
 
-	if (!amdtp_stream_running(&dice->rx_stream)) {
+	if (!amdtp_stream_running(master)) {
+		stop_stream(dice, slave);
 		snd_dice_transaction_clear_enable(dice);
 
+		amdtp_stream_set_sync(sync_mode, master, slave);
+
 		err = snd_dice_transaction_set_rate(dice, rate);
 		if (err < 0) {
 			dev_err(&dice->unit->device,
@@ -167,25 +214,35 @@ int snd_dice_stream_start(struct snd_dice *dice, unsigned int rate)
 			goto end;
 		}
 
-		/* Start stream. */
-		err = start_stream(dice, rate);
+		/* Start both streams. */
+		err = start_stream(dice, master, rate);
 		if (err < 0) {
 			dev_err(&dice->unit->device,
-				"fail to start AMDTP stream\n");
+				"fail to start AMDTP master stream\n");
+			goto end;
+		}
+		err = start_stream(dice, slave, rate);
+		if (err < 0) {
+			dev_err(&dice->unit->device,
+				"fail to start AMDTP slave stream\n");
+			stop_stream(dice, master);
 			goto end;
 		}
 		err = snd_dice_transaction_set_enable(dice);
 		if (err < 0) {
 			dev_err(&dice->unit->device,
 				"fail to enable interface\n");
-			stop_stream(dice);
+			stop_stream(dice, master);
+			stop_stream(dice, slave);
 			goto end;
 		}
 
-		if (!amdtp_stream_wait_callback(&dice->rx_stream,
-						CALLBACK_TIMEOUT)) {
+		/* Wait first callbacks */
+		if (!amdtp_stream_wait_callback(master, CALLBACK_TIMEOUT) ||
+		    !amdtp_stream_wait_callback(slave, CALLBACK_TIMEOUT)) {
 			snd_dice_transaction_clear_enable(dice);
-			stop_stream(dice);
+			stop_stream(dice, master);
+			stop_stream(dice, slave);
 			err = -ETIMEDOUT;
 		}
 	}
@@ -193,46 +250,93 @@ end:
 	return err;
 }
 
-void snd_dice_stream_stop(struct snd_dice *dice)
+void snd_dice_stream_stop_duplex(struct snd_dice *dice)
 {
+	if (dice->substreams_counter > 0)
+		return;
+
 	snd_dice_transaction_clear_enable(dice);
-	stop_stream(dice);
+
+	stop_stream(dice, &dice->tx_stream);
+	stop_stream(dice, &dice->rx_stream);
 }
 
-int snd_dice_stream_init(struct snd_dice *dice)
+static int init_stream(struct snd_dice *dice, struct amdtp_stream *stream)
+{
+	int err;
+	struct fw_iso_resources *resources;
+	enum amdtp_stream_direction dir;
+
+	if (stream == &dice->tx_stream) {
+		resources = &dice->tx_resources;
+		dir = AMDTP_IN_STREAM;
+	} else {
+		resources = &dice->rx_resources;
+		dir = AMDTP_OUT_STREAM;
+	}
+
+	err = fw_iso_resources_init(resources, dice->unit);
+	if (err < 0)
+		goto end;
+	resources->channels_mask = 0x00000000ffffffffuLL;
+
+	err = amdtp_stream_init(stream, dice->unit, dir, CIP_BLOCKING);
+	if (err < 0) {
+		amdtp_stream_destroy(stream);
+		fw_iso_resources_destroy(resources);
+	}
+end:
+	return err;
+}
+
+static void destroy_stream(struct snd_dice *dice, struct amdtp_stream *stream)
+{
+	amdtp_stream_destroy(stream);
+
+	if (stream == &dice->tx_stream)
+		fw_iso_resources_destroy(&dice->tx_resources);
+	else
+		fw_iso_resources_destroy(&dice->rx_resources);
+}
+
+int snd_dice_stream_init_duplex(struct snd_dice *dice)
 {
 	int err;
 
-	err = fw_iso_resources_init(&dice->rx_resources, dice->unit);
+	dice->substreams_counter = 0;
+
+	err = init_stream(dice, &dice->tx_stream);
 	if (err < 0)
 		goto end;
-	dice->rx_resources.channels_mask = 0x00000000ffffffffuLL;
 
-	err = amdtp_stream_init(&dice->rx_stream, dice->unit, AMDTP_OUT_STREAM,
-				CIP_BLOCKING);
+	err = init_stream(dice, &dice->rx_stream);
 	if (err < 0)
-		goto error;
+		goto end;
 
+	/* Currently, clock source is fixed at SYT-Match mode. */
 	err = snd_dice_transaction_set_clock_source(dice, CLOCK_SOURCE_ARX1);
-	if (err < 0)
-		goto error;
+	if (err < 0) {
+		destroy_stream(dice, &dice->rx_stream);
+		destroy_stream(dice, &dice->tx_stream);
+	}
 end:
 	return err;
-error:
-	amdtp_stream_destroy(&dice->rx_stream);
-	fw_iso_resources_destroy(&dice->rx_resources);
-	return err;
 }
 
-void snd_dice_stream_destroy(struct snd_dice *dice)
+void snd_dice_stream_destroy_duplex(struct snd_dice *dice)
 {
 	snd_dice_transaction_clear_enable(dice);
-	stop_stream(dice);
-	amdtp_stream_destroy(&dice->rx_stream);
-	fw_iso_resources_destroy(&dice->rx_resources);
+
+	stop_stream(dice, &dice->tx_stream);
+	destroy_stream(dice, &dice->tx_stream);
+
+	stop_stream(dice, &dice->rx_stream);
+	destroy_stream(dice, &dice->rx_stream);
+
+	dice->substreams_counter = 0;
 }
 
-void snd_dice_stream_update(struct snd_dice *dice)
+void snd_dice_stream_update_duplex(struct snd_dice *dice)
 {
 	/*
 	 * On a bus reset, the DICE firmware disables streaming and then goes
@@ -244,9 +348,11 @@ void snd_dice_stream_update(struct snd_dice *dice)
 	 */
 	dice->global_enabled = false;
 
-	stop_stream(dice);
+	stop_stream(dice, &dice->rx_stream);
+	stop_stream(dice, &dice->tx_stream);
 
 	fw_iso_resources_update(&dice->rx_resources);
+	fw_iso_resources_update(&dice->tx_resources);
 }
 
 static void dice_lock_changed(struct snd_dice *dice)
diff --git a/sound/firewire/dice/dice.c b/sound/firewire/dice/dice.c
index 03a7988871b6..85bcfaf3ea8a 100644
--- a/sound/firewire/dice/dice.c
+++ b/sound/firewire/dice/dice.c
@@ -30,7 +30,6 @@ static int dice_interface_check(struct fw_unit *unit)
 	int key, val, vendor = -1, model = -1, err;
 	unsigned int category, i;
 	__be32 *pointers, value;
-	__be32 tx_data[4];
 	__be32 version;
 
 	pointers = kmalloc_array(ARRAY_SIZE(min_values), sizeof(__be32),
@@ -85,16 +84,6 @@ static int dice_interface_check(struct fw_unit *unit)
 		}
 	}
 
-	/* We support playback only. Let capture devices be handled by FFADO. */
-	err = snd_fw_transaction(unit, TCODE_READ_BLOCK_REQUEST,
-				 DICE_PRIVATE_SPACE +
-				 be32_to_cpu(pointers[2]) * 4,
-				 tx_data, sizeof(tx_data), 0);
-	if (err < 0 || (tx_data[0] && tx_data[3])) {
-		err = -ENODEV;
-		goto end;
-	}
-
 	/*
 	 * Check that the implemented DICE driver specification major version
 	 * number matches.
@@ -142,6 +131,8 @@ static int dice_read_mode_params(struct snd_dice *dice, unsigned int mode)
 	int err;
 
 	if (highest_supported_mode_rate(dice, mode, &rate) < 0) {
+		dice->tx_channels[mode] = 0;
+		dice->tx_midi_ports[mode] = 0;
 		dice->rx_channels[mode] = 0;
 		dice->rx_midi_ports[mode] = 0;
 		return 0;
@@ -151,6 +142,14 @@ static int dice_read_mode_params(struct snd_dice *dice, unsigned int mode)
 	if (err < 0)
 		return err;
 
+	err = snd_dice_transaction_read_tx(dice, TX_NUMBER_AUDIO,
+					   values, sizeof(values));
+	if (err < 0)
+		return err;
+
+	dice->tx_channels[mode]   = be32_to_cpu(values[0]);
+	dice->tx_midi_ports[mode] = be32_to_cpu(values[1]);
+
 	err = snd_dice_transaction_read_rx(dice, RX_NUMBER_AUDIO,
 					   values, sizeof(values));
 	if (err < 0)
@@ -280,13 +279,13 @@ static int dice_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
 
 	snd_dice_create_proc(dice);
 
-	err = snd_dice_stream_init(dice);
+	err = snd_dice_stream_init_duplex(dice);
 	if (err < 0)
 		goto error;
 
 	err = snd_card_register(card);
 	if (err < 0) {
-		snd_dice_stream_destroy(dice);
+		snd_dice_stream_destroy_duplex(dice);
 		goto error;
 	}
 
@@ -304,7 +303,7 @@ static void dice_remove(struct fw_unit *unit)
 
 	snd_card_disconnect(dice->card);
 
-	snd_dice_stream_destroy(dice);
+	snd_dice_stream_destroy_duplex(dice);
 
 	snd_card_free_when_closed(dice->card);
 }
@@ -317,7 +316,7 @@ static void dice_bus_reset(struct fw_unit *unit)
 	snd_dice_transaction_reinit(dice);
 
 	mutex_lock(&dice->mutex);
-	snd_dice_stream_update(dice);
+	snd_dice_stream_update_duplex(dice);
 	mutex_unlock(&dice->mutex);
 }
 
diff --git a/sound/firewire/dice/dice.h b/sound/firewire/dice/dice.h
index 8be530fe1c34..a62ee22da5cc 100644
--- a/sound/firewire/dice/dice.h
+++ b/sound/firewire/dice/dice.h
@@ -52,18 +52,28 @@ struct snd_dice {
 	unsigned int rsrv_offset;
 
 	unsigned int clock_caps;
+	unsigned int tx_channels[3];
 	unsigned int rx_channels[3];
+	unsigned int tx_midi_ports[3];
 	unsigned int rx_midi_ports[3];
+
 	struct fw_address_handler notification_handler;
 	int owner_generation;
+	u32 notification_bits;
+
+	/* For uapi */
 	int dev_lock_count; /* > 0 driver, < 0 userspace */
 	bool dev_lock_changed;
+	wait_queue_head_t hwdep_wait;
+
+	/* For streaming */
+	struct fw_iso_resources tx_resources;
+	struct fw_iso_resources rx_resources;
+	struct amdtp_stream tx_stream;
+	struct amdtp_stream rx_stream;
 	bool global_enabled;
 	struct completion clock_accepted;
-	wait_queue_head_t hwdep_wait;
-	u32 notification_bits;
-	struct fw_iso_resources rx_resources;
-	struct amdtp_stream rx_stream;
+	unsigned int substreams_counter;
 };
 
 enum snd_dice_addr_type {
@@ -160,11 +170,11 @@ extern const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT];
 int snd_dice_stream_get_rate_mode(struct snd_dice *dice,
 				  unsigned int rate, unsigned int *mode);
 
-int snd_dice_stream_start(struct snd_dice *dice, unsigned int rate);
-void snd_dice_stream_stop(struct snd_dice *dice);
-int snd_dice_stream_init(struct snd_dice *dice);
-void snd_dice_stream_destroy(struct snd_dice *dice);
-void snd_dice_stream_update(struct snd_dice *dice);
+int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate);
+void snd_dice_stream_stop_duplex(struct snd_dice *dice);
+int snd_dice_stream_init_duplex(struct snd_dice *dice);
+void snd_dice_stream_destroy_duplex(struct snd_dice *dice);
+void snd_dice_stream_update_duplex(struct snd_dice *dice);
 
 int snd_dice_stream_lock_try(struct snd_dice *dice);
 void snd_dice_stream_lock_release(struct snd_dice *dice);