9 files changed, 637 insertions, 428 deletions

diff --git a/sound/firewire/fireface/Makefile b/sound/firewire/fireface/Makefile
index 8f807284ba54..79a7d6d99d72 100644
--- a/sound/firewire/fireface/Makefile
+++ b/sound/firewire/fireface/Makefile
@@ -1,3 +1,4 @@
 snd-fireface-objs := ff.o ff-transaction.o ff-midi.o ff-proc.o amdtp-ff.o \
-		     ff-stream.o ff-pcm.o ff-hwdep.o ff-protocol-ff400.o
+		     ff-stream.o ff-pcm.o ff-hwdep.o ff-protocol-ff400.o \
+		     ff-protocol-ff800.o
 obj-$(CONFIG_SND_FIREFACE) += snd-fireface.o
diff --git a/sound/firewire/fireface/ff-pcm.c b/sound/firewire/fireface/ff-pcm.c
index bf47f9ec8703..d0bc96b20a65 100644
--- a/sound/firewire/fireface/ff-pcm.c
+++ b/sound/firewire/fireface/ff-pcm.c
@@ -8,11 +8,6 @@
 
 #include "ff.h"
 
-static inline unsigned int get_multiplier_mode_with_index(unsigned int index)
-{
-	return ((int)index - 1) / 2;
-}
-
 static int hw_rule_rate(struct snd_pcm_hw_params *params,
 			struct snd_pcm_hw_rule *rule)
 {
@@ -24,10 +19,16 @@ static int hw_rule_rate(struct snd_pcm_hw_params *params,
 	struct snd_interval t = {
 		.min = UINT_MAX, .max = 0, .integer = 1
 	};
-	unsigned int i, mode;
+	unsigned int i;
 
 	for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
-		mode = get_multiplier_mode_with_index(i);
+		enum snd_ff_stream_mode mode;
+		int err;
+
+		err = snd_ff_stream_get_multiplier_mode(i, &mode);
+		if (err < 0)
+			continue;
+
 		if (!snd_interval_test(c, pcm_channels[mode]))
 			continue;
 
@@ -49,10 +50,16 @@ static int hw_rule_channels(struct snd_pcm_hw_params *params,
 	struct snd_interval t = {
 		.min = UINT_MAX, .max = 0, .integer = 1
 	};
-	unsigned int i, mode;
+	unsigned int i;
 
 	for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
-		mode = get_multiplier_mode_with_index(i);
+		enum snd_ff_stream_mode mode;
+		int err;
+
+		err = snd_ff_stream_get_multiplier_mode(i, &mode);
+		if (err < 0)
+			continue;
+
 		if (!snd_interval_test(r, amdtp_rate_table[i]))
 			continue;
 
@@ -66,7 +73,6 @@ static int hw_rule_channels(struct snd_pcm_hw_params *params,
 static void limit_channels_and_rates(struct snd_pcm_hardware *hw,
 				     const unsigned int *pcm_channels)
 {
-	unsigned int mode;
 	unsigned int rate, channels;
 	int i;
 
@@ -76,7 +82,12 @@ static void limit_channels_and_rates(struct snd_pcm_hardware *hw,
 	hw->rate_max = 0;
 
 	for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
-		mode = get_multiplier_mode_with_index(i);
+		enum snd_ff_stream_mode mode;
+		int err;
+
+		err = snd_ff_stream_get_multiplier_mode(i, &mode);
+		if (err < 0)
+			continue;
 
 		channels = pcm_channels[mode];
 		if (pcm_channels[mode] == 0)
@@ -141,7 +152,7 @@ static int pcm_open(struct snd_pcm_substream *substream)
 	if (err < 0)
 		goto release_lock;
 
-	err = ff->spec->protocol->get_clock(ff, &rate, &src);
+	err = snd_ff_transaction_get_clock(ff, &rate, &src);
 	if (err < 0)
 		goto release_lock;
 
diff --git a/sound/firewire/fireface/ff-proc.c b/sound/firewire/fireface/ff-proc.c
index 40ccbfd8ef89..a0c550dabe9a 100644
--- a/sound/firewire/fireface/ff-proc.c
+++ b/sound/firewire/fireface/ff-proc.c
@@ -12,16 +12,205 @@ static void proc_dump_clock_config(struct snd_info_entry *entry,
 				   struct snd_info_buffer *buffer)
 {
 	struct snd_ff *ff = entry->private_data;
+	__le32 reg;
+	u32 data;
+	unsigned int rate;
+	const char *src;
+	int err;
 
-	ff->spec->protocol->dump_clock_config(ff, buffer);
+	err = snd_fw_transaction(ff->unit, TCODE_READ_BLOCK_REQUEST,
+				 SND_FF_REG_CLOCK_CONFIG, &reg, sizeof(reg), 0);
+	if (err < 0)
+		return;
+
+	data = le32_to_cpu(reg);
+
+	snd_iprintf(buffer, "Output S/PDIF format: %s (Emphasis: %s)\n",
+		    (data & 0x20) ? "Professional" : "Consumer",
+		    (data & 0x40) ? "on" : "off");
+
+	snd_iprintf(buffer, "Optical output interface format: %s\n",
+		    ((data >> 8) & 0x01) ? "S/PDIF" : "ADAT");
+
+	snd_iprintf(buffer, "Word output single speed: %s\n",
+		    ((data >> 8) & 0x20) ? "on" : "off");
+
+	snd_iprintf(buffer, "S/PDIF input interface: %s\n",
+		    ((data >> 8) & 0x02) ? "Optical" : "Coaxial");
+
+	switch ((data >> 1) & 0x03) {
+	case 0x01:
+		rate = 32000;
+		break;
+	case 0x00:
+		rate = 44100;
+		break;
+	case 0x03:
+		rate = 48000;
+		break;
+	case 0x02:
+	default:
+		return;
+	}
+
+	if (data & 0x08)
+		rate *= 2;
+	else if (data & 0x10)
+		rate *= 4;
+
+	snd_iprintf(buffer, "Sampling rate: %d\n", rate);
+
+	if (data & 0x01) {
+		src = "Internal";
+	} else {
+		switch ((data >> 10) & 0x07) {
+		case 0x00:
+			src = "ADAT1";
+			break;
+		case 0x01:
+			src = "ADAT2";
+			break;
+		case 0x03:
+			src = "S/PDIF";
+			break;
+		case 0x04:
+			src = "Word";
+			break;
+		case 0x05:
+			src = "LTC";
+			break;
+		default:
+			return;
+		}
+	}
+
+	snd_iprintf(buffer, "Sync to clock source: %s\n", src);
 }
 
 static void proc_dump_sync_status(struct snd_info_entry *entry,
 				  struct snd_info_buffer *buffer)
 {
 	struct snd_ff *ff = entry->private_data;
+	__le32 reg;
+	u32 data;
+	int err;
+
+	err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
+				 SND_FF_REG_SYNC_STATUS, &reg, sizeof(reg), 0);
+	if (err < 0)
+		return;
+
+	data = le32_to_cpu(reg);
+
+	snd_iprintf(buffer, "External source detection:\n");
+
+	snd_iprintf(buffer, "Word Clock:");
+	if ((data >> 24) & 0x20) {
+		if ((data >> 24) & 0x40)
+			snd_iprintf(buffer, "sync\n");
+		else
+			snd_iprintf(buffer, "lock\n");
+	} else {
+		snd_iprintf(buffer, "none\n");
+	}
+
+	snd_iprintf(buffer, "S/PDIF:");
+	if ((data >> 16) & 0x10) {
+		if ((data >> 16) & 0x04)
+			snd_iprintf(buffer, "sync\n");
+		else
+			snd_iprintf(buffer, "lock\n");
+	} else {
+		snd_iprintf(buffer, "none\n");
+	}
+
+	snd_iprintf(buffer, "ADAT1:");
+	if ((data >> 8) & 0x04) {
+		if ((data >> 8) & 0x10)
+			snd_iprintf(buffer, "sync\n");
+		else
+			snd_iprintf(buffer, "lock\n");
+	} else {
+		snd_iprintf(buffer, "none\n");
+	}
+
+	snd_iprintf(buffer, "ADAT2:");
+	if ((data >> 8) & 0x08) {
+		if ((data >> 8) & 0x20)
+			snd_iprintf(buffer, "sync\n");
+		else
+			snd_iprintf(buffer, "lock\n");
+	} else {
+		snd_iprintf(buffer, "none\n");
+	}
+
+	snd_iprintf(buffer, "\nUsed external source:\n");
+
+	if (((data >> 22) & 0x07) == 0x07) {
+		snd_iprintf(buffer, "None\n");
+	} else {
+		switch ((data >> 22) & 0x07) {
+		case 0x00:
+			snd_iprintf(buffer, "ADAT1:");
+			break;
+		case 0x01:
+			snd_iprintf(buffer, "ADAT2:");
+			break;
+		case 0x03:
+			snd_iprintf(buffer, "S/PDIF:");
+			break;
+		case 0x04:
+			snd_iprintf(buffer, "Word:");
+			break;
+		case 0x07:
+			snd_iprintf(buffer, "Nothing:");
+			break;
+		case 0x02:
+		case 0x05:
+		case 0x06:
+		default:
+			snd_iprintf(buffer, "unknown:");
+			break;
+		}
+
+		if ((data >> 25) & 0x07) {
+			switch ((data >> 25) & 0x07) {
+			case 0x01:
+				snd_iprintf(buffer, "32000\n");
+				break;
+			case 0x02:
+				snd_iprintf(buffer, "44100\n");
+				break;
+			case 0x03:
+				snd_iprintf(buffer, "48000\n");
+				break;
+			case 0x04:
+				snd_iprintf(buffer, "64000\n");
+				break;
+			case 0x05:
+				snd_iprintf(buffer, "88200\n");
+				break;
+			case 0x06:
+				snd_iprintf(buffer, "96000\n");
+				break;
+			case 0x07:
+				snd_iprintf(buffer, "128000\n");
+				break;
+			case 0x08:
+				snd_iprintf(buffer, "176400\n");
+				break;
+			case 0x09:
+				snd_iprintf(buffer, "192000\n");
+				break;
+			case 0x00:
+				snd_iprintf(buffer, "unknown\n");
+				break;
+			}
+		}
+	}
 
-	ff->spec->protocol->dump_sync_status(ff, buffer);
+	snd_iprintf(buffer, "Multiplied:");
+	snd_iprintf(buffer, "%d\n", (data & 0x3ff) * 250);
 }
 
 static void add_node(struct snd_ff *ff, struct snd_info_entry *root,
diff --git a/sound/firewire/fireface/ff-protocol-ff400.c b/sound/firewire/fireface/ff-protocol-ff400.c
index 64c3cb0fb926..2280fab9b3c7 100644
--- a/sound/firewire/fireface/ff-protocol-ff400.c
+++ b/sound/firewire/fireface/ff-protocol-ff400.c
@@ -14,85 +14,60 @@
 #define FF400_ISOC_COMM_START	0x000080100508ull
 #define FF400_TX_PACKET_FORMAT	0x00008010050cull
 #define FF400_ISOC_COMM_STOP	0x000080100510ull
-#define FF400_SYNC_STATUS	0x0000801c0000ull
-#define FF400_FETCH_PCM_FRAMES	0x0000801c0000ull	/* For block request. */
-#define FF400_CLOCK_CONFIG	0x0000801c0004ull
 
-#define FF400_MIDI_HIGH_ADDR	0x0000801003f4ull
-#define FF400_MIDI_RX_PORT_0	0x000080180000ull
-#define FF400_MIDI_RX_PORT_1	0x000080190000ull
-
-static int ff400_get_clock(struct snd_ff *ff, unsigned int *rate,
-			   enum snd_ff_clock_src *src)
+/*
+ * Fireface 400 manages isochronous channel number in 3 bit field. Therefore,
+ * we can allocate between 0 and 7 channel.
+ */
+static int keep_resources(struct snd_ff *ff, unsigned int rate)
 {
-	__le32 reg;
-	u32 data;
+	enum snd_ff_stream_mode mode;
+	int i;
 	int err;
 
-	err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
-				 FF400_SYNC_STATUS, &reg, sizeof(reg), 0);
+	// Check whether the given value is supported or not.
+	for (i = 0; i < CIP_SFC_COUNT; i++) {
+		if (amdtp_rate_table[i] == rate)
+			break;
+	}
+	if (i >= CIP_SFC_COUNT)
+		return -EINVAL;
+
+	err = snd_ff_stream_get_multiplier_mode(i, &mode);
 	if (err < 0)
 		return err;
-	data = le32_to_cpu(reg);
 
-	/* Calculate sampling rate. */
-	switch ((data >> 1) & 0x03) {
-	case 0x01:
-		*rate = 32000;
-		break;
-	case 0x00:
-		*rate = 44100;
-		break;
-	case 0x03:
-		*rate = 48000;
-		break;
-	case 0x02:
-	default:
-		return -EIO;
-	}
-
-	if (data & 0x08)
-		*rate *= 2;
-	else if (data & 0x10)
-		*rate *= 4;
+	/* Keep resources for in-stream. */
+	ff->tx_resources.channels_mask = 0x00000000000000ffuLL;
+	err = fw_iso_resources_allocate(&ff->tx_resources,
+			amdtp_stream_get_max_payload(&ff->tx_stream),
+			fw_parent_device(ff->unit)->max_speed);
+	if (err < 0)
+		return err;
 
-	/* Calculate source of clock. */
-	if (data & 0x01) {
-		*src = SND_FF_CLOCK_SRC_INTERNAL;
-	} else {
-		/* TODO: 0x00, 0x01, 0x02, 0x06, 0x07? */
-		switch ((data >> 10) & 0x07) {
-		case 0x03:
-			*src = SND_FF_CLOCK_SRC_SPDIF;
-			break;
-		case 0x04:
-			*src = SND_FF_CLOCK_SRC_WORD;
-			break;
-		case 0x05:
-			*src = SND_FF_CLOCK_SRC_LTC;
-			break;
-		case 0x00:
-		default:
-			*src = SND_FF_CLOCK_SRC_ADAT;
-			break;
-		}
-	}
+	/* Keep resources for out-stream. */
+	err = amdtp_ff_set_parameters(&ff->rx_stream, rate,
+				      ff->spec->pcm_playback_channels[mode]);
+	if (err < 0)
+		return err;
+	ff->rx_resources.channels_mask = 0x00000000000000ffuLL;
+	err = fw_iso_resources_allocate(&ff->rx_resources,
+			amdtp_stream_get_max_payload(&ff->rx_stream),
+			fw_parent_device(ff->unit)->max_speed);
+	if (err < 0)
+		fw_iso_resources_free(&ff->tx_resources);
 
-	return 0;
+	return err;
 }
 
 static int ff400_begin_session(struct snd_ff *ff, unsigned int rate)
 {
 	__le32 reg;
-	int i, err;
+	int err;
 
-	/* Check whether the given value is supported or not. */
-	for (i = 0; i < CIP_SFC_COUNT; i++) {
-		if (amdtp_rate_table[i] == rate)
-			break;
-	}
-	if (i == CIP_SFC_COUNT)
-		return -EINVAL;
+	err = keep_resources(ff, rate);
+	if (err < 0)
+		return err;
 
 	/* Set the number of data blocks transferred in a second. */
 	reg = cpu_to_le32(rate);
@@ -142,233 +117,45 @@ static void ff400_finish_session(struct snd_ff *ff)
 			   FF400_ISOC_COMM_STOP, &reg, sizeof(reg), 0);
 }
 
-static int ff400_switch_fetching_mode(struct snd_ff *ff, bool enable)
+static void ff400_handle_midi_msg(struct snd_ff *ff, __le32 *buf, size_t length)
 {
-	__le32 *reg;
 	int i;
-	int err;
 
-	reg = kcalloc(18, sizeof(__le32), GFP_KERNEL);
-	if (reg == NULL)
-		return -ENOMEM;
+	for (i = 0; i < length / 4; i++) {
+		u32 quad = le32_to_cpu(buf[i]);
+		u8 byte;
+		unsigned int index;
+		struct snd_rawmidi_substream *substream;
 
-	if (enable) {
+		/* Message in first port. */
 		/*
-		 * Each quadlet is corresponding to data channels in a data
-		 * blocks in reverse order. Precisely, quadlets for available
-		 * data channels should be enabled. Here, I take second best
-		 * to fetch PCM frames from all of data channels regardless of
-		 * stf.
+		 * This value may represent the index of this unit when the same
+		 * units are on the same IEEE 1394 bus. This driver doesn't use
+		 * it.
 		 */
-		for (i = 0; i < 18; ++i)
-			reg[i] = cpu_to_le32(0x00000001);
-	}
-
-	err = snd_fw_transaction(ff->unit, TCODE_WRITE_BLOCK_REQUEST,
-				 FF400_FETCH_PCM_FRAMES, reg,
-				 sizeof(__le32) * 18, 0);
-	kfree(reg);
-	return err;
-}
-
-static void ff400_dump_sync_status(struct snd_ff *ff,
-				   struct snd_info_buffer *buffer)
-{
-	__le32 reg;
-	u32 data;
-	int err;
-
-	err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
-				 FF400_SYNC_STATUS, &reg, sizeof(reg), 0);
-	if (err < 0)
-		return;
-
-	data = le32_to_cpu(reg);
-
-	snd_iprintf(buffer, "External source detection:\n");
-
-	snd_iprintf(buffer, "Word Clock:");
-	if ((data >> 24) & 0x20) {
-		if ((data >> 24) & 0x40)
-			snd_iprintf(buffer, "sync\n");
-		else
-			snd_iprintf(buffer, "lock\n");
-	} else {
-		snd_iprintf(buffer, "none\n");
-	}
-
-	snd_iprintf(buffer, "S/PDIF:");
-	if ((data >> 16) & 0x10) {
-		if ((data >> 16) & 0x04)
-			snd_iprintf(buffer, "sync\n");
-		else
-			snd_iprintf(buffer, "lock\n");
-	} else {
-		snd_iprintf(buffer, "none\n");
-	}
-
-	snd_iprintf(buffer, "ADAT:");
-	if ((data >> 8) & 0x04) {
-		if ((data >> 8) & 0x10)
-			snd_iprintf(buffer, "sync\n");
-		else
-			snd_iprintf(buffer, "lock\n");
-	} else {
-		snd_iprintf(buffer, "none\n");
-	}
-
-	snd_iprintf(buffer, "\nUsed external source:\n");
-
-	if (((data >> 22) & 0x07) == 0x07) {
-		snd_iprintf(buffer, "None\n");
-	} else {
-		switch ((data >> 22) & 0x07) {
-		case 0x00:
-			snd_iprintf(buffer, "ADAT:");
-			break;
-		case 0x03:
-			snd_iprintf(buffer, "S/PDIF:");
-			break;
-		case 0x04:
-			snd_iprintf(buffer, "Word:");
-			break;
-		case 0x07:
-			snd_iprintf(buffer, "Nothing:");
-			break;
-		case 0x01:
-		case 0x02:
-		case 0x05:
-		case 0x06:
-		default:
-			snd_iprintf(buffer, "unknown:");
-			break;
-		}
-
-		if ((data >> 25) & 0x07) {
-			switch ((data >> 25) & 0x07) {
-			case 0x01:
-				snd_iprintf(buffer, "32000\n");
-				break;
-			case 0x02:
-				snd_iprintf(buffer, "44100\n");
-				break;
-			case 0x03:
-				snd_iprintf(buffer, "48000\n");
-				break;
-			case 0x04:
-				snd_iprintf(buffer, "64000\n");
-				break;
-			case 0x05:
-				snd_iprintf(buffer, "88200\n");
-				break;
-			case 0x06:
-				snd_iprintf(buffer, "96000\n");
-				break;
-			case 0x07:
-				snd_iprintf(buffer, "128000\n");
-				break;
-			case 0x08:
-				snd_iprintf(buffer, "176400\n");
-				break;
-			case 0x09:
-				snd_iprintf(buffer, "192000\n");
-				break;
-			case 0x00:
-				snd_iprintf(buffer, "unknown\n");
-				break;
+		index = (quad >> 8) & 0xff;
+		if (index > 0) {
+			substream = READ_ONCE(ff->tx_midi_substreams[0]);
+			if (substream != NULL) {
+				byte = quad & 0xff;
+				snd_rawmidi_receive(substream, &byte, 1);
 			}
 		}
-	}
-
-	snd_iprintf(buffer, "Multiplied:");
-	snd_iprintf(buffer, "%d\n", (data & 0x3ff) * 250);
-}
 
-static void ff400_dump_clock_config(struct snd_ff *ff,
-				    struct snd_info_buffer *buffer)
-{
-	__le32 reg;
-	u32 data;
-	unsigned int rate;
-	const char *src;
-	int err;
-
-	err = snd_fw_transaction(ff->unit, TCODE_READ_BLOCK_REQUEST,
-				 FF400_CLOCK_CONFIG, &reg, sizeof(reg), 0);
-	if (err < 0)
-		return;
-
-	data = le32_to_cpu(reg);
-
-	snd_iprintf(buffer, "Output S/PDIF format: %s (Emphasis: %s)\n",
-		    (data & 0x20) ? "Professional" : "Consumer",
-		    (data & 0x40) ? "on" : "off");
-
-	snd_iprintf(buffer, "Optical output interface format: %s\n",
-		    ((data >> 8) & 0x01) ? "S/PDIF" : "ADAT");
-
-	snd_iprintf(buffer, "Word output single speed: %s\n",
-		    ((data >> 8) & 0x20) ? "on" : "off");
-
-	snd_iprintf(buffer, "S/PDIF input interface: %s\n",
-		    ((data >> 8) & 0x02) ? "Optical" : "Coaxial");
-
-	switch ((data >> 1) & 0x03) {
-	case 0x01:
-		rate = 32000;
-		break;
-	case 0x00:
-		rate = 44100;
-		break;
-	case 0x03:
-		rate = 48000;
-		break;
-	case 0x02:
-	default:
-		return;
-	}
-
-	if (data & 0x08)
-		rate *= 2;
-	else if (data & 0x10)
-		rate *= 4;
-
-	snd_iprintf(buffer, "Sampling rate: %d\n", rate);
-
-	if (data & 0x01) {
-		src = "Internal";
-	} else {
-		switch ((data >> 10) & 0x07) {
-		case 0x00:
-			src = "ADAT";
-			break;
-		case 0x03:
-			src = "S/PDIF";
-			break;
-		case 0x04:
-			src = "Word";
-			break;
-		case 0x05:
-			src = "LTC";
-			break;
-		default:
-			return;
+		/* Message in second port. */
+		index = (quad >> 24) & 0xff;
+		if (index > 0) {
+			substream = READ_ONCE(ff->tx_midi_substreams[1]);
+			if (substream != NULL) {
+				byte = (quad >> 16) & 0xff;
+				snd_rawmidi_receive(substream, &byte, 1);
+			}
 		}
 	}
-
-	snd_iprintf(buffer, "Sync to clock source: %s\n", src);
 }
 
 const struct snd_ff_protocol snd_ff_protocol_ff400 = {
-	.get_clock		= ff400_get_clock,
+	.handle_midi_msg	= ff400_handle_midi_msg,
 	.begin_session		= ff400_begin_session,
 	.finish_session		= ff400_finish_session,
-	.switch_fetching_mode	= ff400_switch_fetching_mode,
-
-	.dump_sync_status	= ff400_dump_sync_status,
-	.dump_clock_config	= ff400_dump_clock_config,
-
-	.midi_high_addr_reg	= FF400_MIDI_HIGH_ADDR,
-	.midi_rx_port_0_reg	= FF400_MIDI_RX_PORT_0,
-	.midi_rx_port_1_reg	= FF400_MIDI_RX_PORT_1,
 };
diff --git a/sound/firewire/fireface/ff-protocol-ff800.c b/sound/firewire/fireface/ff-protocol-ff800.c
new file mode 100644
index 000000000000..2acbf6039770
--- /dev/null
+++ b/sound/firewire/fireface/ff-protocol-ff800.c
@@ -0,0 +1,143 @@
+/*
+ * ff-protocol-ff800.c - a part of driver for RME Fireface series
+ *
+ * Copyright (c) 2018 Takashi Sakamoto
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include <linux/delay.h>
+
+#include "ff.h"
+
+#define FF800_STF		0x0000fc88f000
+#define FF800_RX_PACKET_FORMAT	0x0000fc88f004
+#define FF800_ALLOC_TX_STREAM	0x0000fc88f008
+#define FF800_ISOC_COMM_START	0x0000fc88f00c
+#define   FF800_TX_S800_FLAG	0x00000800
+#define FF800_ISOC_COMM_STOP	0x0000fc88f010
+
+#define FF800_TX_PACKET_ISOC_CH	0x0000801c0008
+
+static int allocate_rx_resources(struct snd_ff *ff)
+{
+	u32 data;
+	__le32 reg;
+	int err;
+
+	// Controllers should allocate isochronous resources for rx stream.
+	err = fw_iso_resources_allocate(&ff->rx_resources,
+				amdtp_stream_get_max_payload(&ff->rx_stream),
+				fw_parent_device(ff->unit)->max_speed);
+	if (err < 0)
+		return err;
+
+	// Set isochronous channel and the number of quadlets of rx packets.
+	data = ff->rx_stream.data_block_quadlets << 3;
+	data = (data << 8) | ff->rx_resources.channel;
+	reg = cpu_to_le32(data);
+	return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+				FF800_RX_PACKET_FORMAT, &reg, sizeof(reg), 0);
+}
+
+static int allocate_tx_resources(struct snd_ff *ff)
+{
+	__le32 reg;
+	unsigned int count;
+	unsigned int tx_isoc_channel;
+	int err;
+
+	reg = cpu_to_le32(ff->tx_stream.data_block_quadlets);
+	err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+				 FF800_ALLOC_TX_STREAM, &reg, sizeof(reg), 0);
+	if (err < 0)
+		return err;
+
+	// Wait till the format of tx packet is available.
+	count = 0;
+	while (count++ < 10) {
+		u32 data;
+		err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
+				FF800_TX_PACKET_ISOC_CH, &reg, sizeof(reg), 0);
+		if (err < 0)
+			return err;
+
+		data = le32_to_cpu(reg);
+		if (data != 0xffffffff) {
+			tx_isoc_channel = data;
+			break;
+		}
+
+		msleep(50);
+	}
+	if (count >= 10)
+		return -ETIMEDOUT;
+
+	// NOTE: this is a makeshift to start OHCI 1394 IR context in the
+	// channel. On the other hand, 'struct fw_iso_resources.allocated' is
+	// not true and it's not deallocated at stop.
+	ff->tx_resources.channel = tx_isoc_channel;
+
+	return 0;
+}
+
+static int ff800_begin_session(struct snd_ff *ff, unsigned int rate)
+{
+	__le32 reg;
+	int err;
+
+	reg = cpu_to_le32(rate);
+	err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+				 FF800_STF, &reg, sizeof(reg), 0);
+	if (err < 0)
+		return err;
+
+	// If starting isochronous communication immediately, change of STF has
+	// no effect. In this case, the communication runs based on former STF.
+	// Let's sleep for a bit.
+	msleep(100);
+
+	err = allocate_rx_resources(ff);
+	if (err < 0)
+		return err;
+
+	err = allocate_tx_resources(ff);
+	if (err < 0)
+		return err;
+
+	reg = cpu_to_le32(0x80000000);
+	reg |= cpu_to_le32(ff->tx_stream.data_block_quadlets);
+	if (fw_parent_device(ff->unit)->max_speed == SCODE_800)
+		reg |= cpu_to_le32(FF800_TX_S800_FLAG);
+	return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+				 FF800_ISOC_COMM_START, &reg, sizeof(reg), 0);
+}
+
+static void ff800_finish_session(struct snd_ff *ff)
+{
+	__le32 reg;
+
+	reg = cpu_to_le32(0x80000000);
+	snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+			   FF800_ISOC_COMM_STOP, &reg, sizeof(reg), 0);
+}
+
+static void ff800_handle_midi_msg(struct snd_ff *ff, __le32 *buf, size_t length)
+{
+	int i;
+
+	for (i = 0; i < length / 4; i++) {
+		u8 byte = le32_to_cpu(buf[i]) & 0xff;
+		struct snd_rawmidi_substream *substream;
+
+		substream = READ_ONCE(ff->tx_midi_substreams[0]);
+		if (substream)
+			snd_rawmidi_receive(substream, &byte, 1);
+	}
+}
+
+const struct snd_ff_protocol snd_ff_protocol_ff800 = {
+	.handle_midi_msg	= ff800_handle_midi_msg,
+	.begin_session		= ff800_begin_session,
+	.finish_session		= ff800_finish_session,
+};
diff --git a/sound/firewire/fireface/ff-stream.c b/sound/firewire/fireface/ff-stream.c
index 78880922120e..a490e4553721 100644
--- a/sound/firewire/fireface/ff-stream.c
+++ b/sound/firewire/fireface/ff-stream.c
@@ -10,73 +10,71 @@
 
 #define CALLBACK_TIMEOUT_MS	200
 
-static int get_rate_mode(unsigned int rate, unsigned int *mode)
+int snd_ff_stream_get_multiplier_mode(enum cip_sfc sfc,
+				      enum snd_ff_stream_mode *mode)
 {
-	int i;
-
-	for (i = 0; i < CIP_SFC_COUNT; i++) {
-		if (amdtp_rate_table[i] == rate)
-			break;
-	}
-
-	if (i == CIP_SFC_COUNT)
+	static const enum snd_ff_stream_mode modes[] = {
+		[CIP_SFC_32000] = SND_FF_STREAM_MODE_LOW,
+		[CIP_SFC_44100] = SND_FF_STREAM_MODE_LOW,
+		[CIP_SFC_48000] = SND_FF_STREAM_MODE_LOW,
+		[CIP_SFC_88200] = SND_FF_STREAM_MODE_MID,
+		[CIP_SFC_96000] = SND_FF_STREAM_MODE_MID,
+		[CIP_SFC_176400] = SND_FF_STREAM_MODE_HIGH,
+		[CIP_SFC_192000] = SND_FF_STREAM_MODE_HIGH,
+	};
+
+	if (sfc >= CIP_SFC_COUNT)
 		return -EINVAL;
 
-	*mode = ((int)i - 1) / 2;
+	*mode = modes[sfc];
 
 	return 0;
 }
 
-/*
- * Fireface 400 manages isochronous channel number in 3 bit field. Therefore,
- * we can allocate between 0 and 7 channel.
- */
-static int keep_resources(struct snd_ff *ff, unsigned int rate)
+static void release_resources(struct snd_ff *ff)
 {
-	int mode;
-	int err;
-
-	err = get_rate_mode(rate, &mode);
-	if (err < 0)
-		return err;
+	fw_iso_resources_free(&ff->tx_resources);
+	fw_iso_resources_free(&ff->rx_resources);
+}
 
-	/* Keep resources for in-stream. */
-	err = amdtp_ff_set_parameters(&ff->tx_stream, rate,
-				      ff->spec->pcm_capture_channels[mode]);
-	if (err < 0)
-		return err;
-	ff->tx_resources.channels_mask = 0x00000000000000ffuLL;
-	err = fw_iso_resources_allocate(&ff->tx_resources,
-			amdtp_stream_get_max_payload(&ff->tx_stream),
-			fw_parent_device(ff->unit)->max_speed);
-	if (err < 0)
-		return err;
+static int switch_fetching_mode(struct snd_ff *ff, bool enable)
+{
+	unsigned int count;
+	__le32 *reg;
+	int i;
+	int err;
 
-	/* Keep resources for out-stream. */
-	err = amdtp_ff_set_parameters(&ff->rx_stream, rate,
-				      ff->spec->pcm_playback_channels[mode]);
-	if (err < 0)
-		return err;
-	ff->rx_resources.channels_mask = 0x00000000000000ffuLL;
-	err = fw_iso_resources_allocate(&ff->rx_resources,
-			amdtp_stream_get_max_payload(&ff->rx_stream),
-			fw_parent_device(ff->unit)->max_speed);
-	if (err < 0)
-		fw_iso_resources_free(&ff->tx_resources);
+	count = 0;
+	for (i = 0; i < SND_FF_STREAM_MODE_COUNT; ++i)
+		count = max(count, ff->spec->pcm_playback_channels[i]);
+
+	reg = kcalloc(count, sizeof(__le32), GFP_KERNEL);
+	if (!reg)
+		return -ENOMEM;
+
+	if (!enable) {
+		/*
+		 * Each quadlet is corresponding to data channels in a data
+		 * blocks in reverse order. Precisely, quadlets for available
+		 * data channels should be enabled. Here, I take second best
+		 * to fetch PCM frames from all of data channels regardless of
+		 * stf.
+		 */
+		for (i = 0; i < count; ++i)
+			reg[i] = cpu_to_le32(0x00000001);
+	}
 
+	err = snd_fw_transaction(ff->unit, TCODE_WRITE_BLOCK_REQUEST,
+				 SND_FF_REG_FETCH_PCM_FRAMES, reg,
+				 sizeof(__le32) * count, 0);
+	kfree(reg);
 	return err;
 }
 
-static void release_resources(struct snd_ff *ff)
-{
-	fw_iso_resources_free(&ff->tx_resources);
-	fw_iso_resources_free(&ff->rx_resources);
-}
-
 static inline void finish_session(struct snd_ff *ff)
 {
 	ff->spec->protocol->finish_session(ff);
-	ff->spec->protocol->switch_fetching_mode(ff, false);
+	switch_fetching_mode(ff, false);
 }
 
 static int init_stream(struct snd_ff *ff, enum amdtp_stream_direction dir)
@@ -149,7 +147,7 @@ int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate)
 	if (ff->substreams_counter == 0)
 		return 0;
 
-	err = ff->spec->protocol->get_clock(ff, &curr_rate, &src);
+	err = snd_ff_transaction_get_clock(ff, &curr_rate, &src);
 	if (err < 0)
 		return err;
 	if (curr_rate != rate ||
@@ -168,9 +166,29 @@ int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate)
 	 * packets. Then, the device transfers packets.
 	 */
 	if (!amdtp_stream_running(&ff->rx_stream)) {
-		err = keep_resources(ff, rate);
+		enum snd_ff_stream_mode mode;
+		int i;
+
+		for (i = 0; i < CIP_SFC_COUNT; ++i) {
+			if (amdtp_rate_table[i] == rate)
+				break;
+		}
+		if (i >= CIP_SFC_COUNT)
+			return -EINVAL;
+
+		err = snd_ff_stream_get_multiplier_mode(i, &mode);
 		if (err < 0)
-			goto error;
+			return err;
+
+		err = amdtp_ff_set_parameters(&ff->tx_stream, rate,
+					ff->spec->pcm_capture_channels[mode]);
+		if (err < 0)
+			return err;
+
+		err = amdtp_ff_set_parameters(&ff->rx_stream, rate,
+					ff->spec->pcm_playback_channels[mode]);
+		if (err < 0)
+			return err;
 
 		err = ff->spec->protocol->begin_session(ff, rate);
 		if (err < 0)
@@ -188,7 +206,7 @@ int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate)
 			goto error;
 		}
 
-		err = ff->spec->protocol->switch_fetching_mode(ff, true);
+		err = switch_fetching_mode(ff, true);
 		if (err < 0)
 			goto error;
 	}
diff --git a/sound/firewire/fireface/ff-transaction.c b/sound/firewire/fireface/ff-transaction.c
index 332b29f8ed75..5f4ddfd55403 100644
--- a/sound/firewire/fireface/ff-transaction.c
+++ b/sound/firewire/fireface/ff-transaction.c
@@ -8,6 +8,72 @@
 
 #include "ff.h"
 
+#define SND_FF_REG_MIDI_RX_PORT_0	0x000080180000ull
+#define SND_FF_REG_MIDI_RX_PORT_1	0x000080190000ull
+
+int snd_ff_transaction_get_clock(struct snd_ff *ff, unsigned int *rate,
+				 enum snd_ff_clock_src *src)
+{
+	__le32 reg;
+	u32 data;
+	int err;
+
+	err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
+				 SND_FF_REG_CLOCK_CONFIG, &reg, sizeof(reg), 0);
+	if (err < 0)
+		return err;
+	data = le32_to_cpu(reg);
+
+	/* Calculate sampling rate. */
+	switch ((data >> 1) & 0x03) {
+	case 0x01:
+		*rate = 32000;
+		break;
+	case 0x00:
+		*rate = 44100;
+		break;
+	case 0x03:
+		*rate = 48000;
+		break;
+	case 0x02:
+	default:
+		return -EIO;
+	}
+
+	if (data & 0x08)
+		*rate *= 2;
+	else if (data & 0x10)
+		*rate *= 4;
+
+	/* Calculate source of clock. */
+	if (data & 0x01) {
+		*src = SND_FF_CLOCK_SRC_INTERNAL;
+	} else {
+		/* TODO: 0x02, 0x06, 0x07? */
+		switch ((data >> 10) & 0x07) {
+		case 0x00:
+			*src = SND_FF_CLOCK_SRC_ADAT1;
+			break;
+		case 0x01:
+			*src = SND_FF_CLOCK_SRC_ADAT2;
+			break;
+		case 0x03:
+			*src = SND_FF_CLOCK_SRC_SPDIF;
+			break;
+		case 0x04:
+			*src = SND_FF_CLOCK_SRC_WORD;
+			break;
+		case 0x05:
+			*src = SND_FF_CLOCK_SRC_LTC;
+			break;
+		default:
+			return -EIO;
+		}
+	}
+
+	return 0;
+}
+
 static void finish_transmit_midi_msg(struct snd_ff *ff, unsigned int port,
 				     int rcode)
 {
@@ -90,10 +156,10 @@ static void transmit_midi_msg(struct snd_ff *ff, unsigned int port)
 		fill_midi_buf(ff, port, i, buf[i]);
 
 	if (port == 0) {
-		addr = ff->spec->protocol->midi_rx_port_0_reg;
+		addr = SND_FF_REG_MIDI_RX_PORT_0;
 		callback = finish_transmit_midi0_msg;
 	} else {
-		addr = ff->spec->protocol->midi_rx_port_1_reg;
+		addr = SND_FF_REG_MIDI_RX_PORT_1;
 		callback = finish_transmit_midi1_msg;
 	}
 
@@ -140,42 +206,10 @@ static void handle_midi_msg(struct fw_card *card, struct fw_request *request,
 {
 	struct snd_ff *ff = callback_data;
 	__le32 *buf = data;
-	u32 quad;
-	u8 byte;
-	unsigned int index;
-	struct snd_rawmidi_substream *substream;
-	int i;
 
 	fw_send_response(card, request, RCODE_COMPLETE);
 
-	for (i = 0; i < length / 4; i++) {
-		quad = le32_to_cpu(buf[i]);
-
-		/* Message in first port. */
-		/*
-		 * This value may represent the index of this unit when the same
-		 * units are on the same IEEE 1394 bus. This driver doesn't use
-		 * it.
-		 */
-		index = (quad >> 8) & 0xff;
-		if (index > 0) {
-			substream = READ_ONCE(ff->tx_midi_substreams[0]);
-			if (substream != NULL) {
-				byte = quad & 0xff;
-				snd_rawmidi_receive(substream, &byte, 1);
-			}
-		}
-
-		/* Message in second port. */
-		index = (quad >> 24) & 0xff;
-		if (index > 0) {
-			substream = READ_ONCE(ff->tx_midi_substreams[1]);
-			if (substream != NULL) {
-				byte = (quad >> 16) & 0xff;
-				snd_rawmidi_receive(substream, &byte, 1);
-			}
-		}
-	}
+	ff->spec->protocol->handle_midi_msg(ff, buf, length);
 }
 
 static int allocate_own_address(struct snd_ff *ff, int i)
@@ -203,36 +237,33 @@ static int allocate_own_address(struct snd_ff *ff, int i)
 }
 
 /*
- * The configuration to start asynchronous transactions for MIDI messages is in
- * 0x'0000'8010'051c. This register includes the other options, thus this driver
- * doesn't touch it and leaves the decision to userspace. The userspace MUST add
- * 0x04000000 to write transactions to the register to receive any MIDI
- * messages.
- *
- * Here, I just describe MIDI-related offsets of the register, in little-endian
- * order.
- *
  * Controllers are allowed to register higher 4 bytes of address to receive
- * the transactions. The register is 0x'0000'8010'03f4. On the other hand, the
- * controllers are not allowed to register lower 4 bytes of the address. They
- * are forced to select from 4 options by writing corresponding bits to
- * 0x'0000'8010'051c.
+ * the transactions. Different models have different registers for this purpose;
+ * e.g. 0x'0000'8010'03f4 for Fireface 400.
+ * The controllers are not allowed to register lower 4 bytes of the address.
+ * They are forced to select one of 4 options for the part of address by writing
+ * corresponding bits to 0x'0000'8010'051f.
+ *
+ * The 3rd-6th bits of this register are flags to indicate lower 4 bytes of
+ * address to which the device transferrs the transactions. In short:
+ *  - 0x20: 0x'....'....'0000'0180
+ *  - 0x10: 0x'....'....'0000'0100
+ *  - 0x08: 0x'....'....'0000'0080
+ *  - 0x04: 0x'....'....'0000'0000
  *
- * The 3rd-6th bits in MSB of this register are used to indicate lower 4 bytes
- * of address to which the device transferrs the transactions.
- *  - 6th: 0x'....'....'0000'0180
- *  - 5th: 0x'....'....'0000'0100
- *  - 4th: 0x'....'....'0000'0080
- *  - 3rd: 0x'....'....'0000'0000
+ * This driver configure 0x'....'....'0000'0000 to receive MIDI messages from
+ * units. The 3rd bit of the register should be configured, however this driver
+ * deligates this task to userspace applications due to a restriction that this
+ * register is write-only and the other bits have own effects.
  *
- * This driver configure 0x'....'....'0000'0000 for units to receive MIDI
- * messages. 3rd bit of the register should be configured, however this driver
- * deligates this task to user space applications due to a restriction that
- * this register is write-only and the other bits have own effects.
+ * Unlike Fireface 800, Fireface 400 cancels transferring asynchronous
+ * transactions when the 1st and 2nd of the register stand. These two bits have
+ * the same effect.
+ *  - 0x02, 0x01: cancel transferring
  *
- * The 1st and 2nd bits in LSB of this register are used to cancel transferring
- * asynchronous transactions. These two bits have the same effect.
- *  - 1st/2nd: cancel transferring
+ * On the other hand, the bits have no effect on Fireface 800. This model
+ * cancels asynchronous transactions when the higher 4 bytes of address is
+ * overwritten with zero.
  */
 int snd_ff_transaction_reregister(struct snd_ff *ff)
 {
@@ -247,7 +278,7 @@ int snd_ff_transaction_reregister(struct snd_ff *ff)
 	addr = (fw_card->node_id << 16) | (ff->async_handler.offset >> 32);
 	reg = cpu_to_le32(addr);
 	return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
-				  ff->spec->protocol->midi_high_addr_reg,
+				  ff->spec->midi_high_addr,
 				  &reg, sizeof(reg), 0);
 }
 
@@ -288,7 +319,7 @@ void snd_ff_transaction_unregister(struct snd_ff *ff)
 	/* Release higher 4 bytes of address. */
 	reg = cpu_to_le32(0x00000000);
 	snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
-			   ff->spec->protocol->midi_high_addr_reg,
+			   ff->spec->midi_high_addr,
 			   &reg, sizeof(reg), 0);
 
 	fw_core_remove_address_handler(&ff->async_handler);
diff --git a/sound/firewire/fireface/ff.c b/sound/firewire/fireface/ff.c
index 3f61cfeace69..36575f4159d1 100644
--- a/sound/firewire/fireface/ff.c
+++ b/sound/firewire/fireface/ff.c
@@ -145,6 +145,16 @@ static void snd_ff_remove(struct fw_unit *unit)
 	fw_unit_put(ff->unit);
 }
 
+static const struct snd_ff_spec spec_ff800 = {
+	.name = "Fireface800",
+	.pcm_capture_channels = {28, 20, 12},
+	.pcm_playback_channels = {28, 20, 12},
+	.midi_in_ports = 1,
+	.midi_out_ports = 1,
+	.protocol = &snd_ff_protocol_ff800,
+	.midi_high_addr = 0x000200000320ull,
+};
+
 static const struct snd_ff_spec spec_ff400 = {
 	.name = "Fireface400",
 	.pcm_capture_channels = {18, 14, 10},
@@ -152,9 +162,22 @@ static const struct snd_ff_spec spec_ff400 = {
 	.midi_in_ports = 2,
 	.midi_out_ports = 2,
 	.protocol = &snd_ff_protocol_ff400,
+	.midi_high_addr = 0x0000801003f4ull,
 };
 
 static const struct ieee1394_device_id snd_ff_id_table[] = {
+	/* Fireface 800 */
+	{
+		.match_flags	= IEEE1394_MATCH_VENDOR_ID |
+				  IEEE1394_MATCH_SPECIFIER_ID |
+				  IEEE1394_MATCH_VERSION |
+				  IEEE1394_MATCH_MODEL_ID,
+		.vendor_id	= OUI_RME,
+		.specifier_id	= OUI_RME,
+		.version	= 0x000001,
+		.model_id	= 0x101800,
+		.driver_data	= (kernel_ulong_t)&spec_ff800,
+	},
 	/* Fireface 400 */
 	{
 		.match_flags	= IEEE1394_MATCH_VENDOR_ID |
@@ -162,7 +185,7 @@ static const struct ieee1394_device_id snd_ff_id_table[] = {
 				  IEEE1394_MATCH_VERSION |
 				  IEEE1394_MATCH_MODEL_ID,
 		.vendor_id	= OUI_RME,
-		.specifier_id	= 0x000a35,
+		.specifier_id	= OUI_RME,
 		.version	= 0x000002,
 		.model_id	= 0x101800,
 		.driver_data	= (kernel_ulong_t)&spec_ff400,
diff --git a/sound/firewire/fireface/ff.h b/sound/firewire/fireface/ff.h
index 64df44beb950..7dfc7745a914 100644
--- a/sound/firewire/fireface/ff.h
+++ b/sound/firewire/fireface/ff.h
@@ -31,23 +31,34 @@
 #include "../amdtp-stream.h"
 #include "../iso-resources.h"
 
-#define SND_FF_STREAM_MODES		3
-
 #define SND_FF_MAXIMIM_MIDI_QUADS	9
 #define SND_FF_IN_MIDI_PORTS		2
 #define SND_FF_OUT_MIDI_PORTS		2
 
+#define SND_FF_REG_SYNC_STATUS		0x0000801c0000ull
+/* For block write request. */
+#define SND_FF_REG_FETCH_PCM_FRAMES	0x0000801c0000ull
+#define SND_FF_REG_CLOCK_CONFIG		0x0000801c0004ull
+
+enum snd_ff_stream_mode {
+	SND_FF_STREAM_MODE_LOW = 0,
+	SND_FF_STREAM_MODE_MID,
+	SND_FF_STREAM_MODE_HIGH,
+	SND_FF_STREAM_MODE_COUNT,
+};
+
 struct snd_ff_protocol;
 struct snd_ff_spec {
 	const char *const name;
 
-	const unsigned int pcm_capture_channels[SND_FF_STREAM_MODES];
-	const unsigned int pcm_playback_channels[SND_FF_STREAM_MODES];
+	const unsigned int pcm_capture_channels[SND_FF_STREAM_MODE_COUNT];
+	const unsigned int pcm_playback_channels[SND_FF_STREAM_MODE_COUNT];
 
 	unsigned int midi_in_ports;
 	unsigned int midi_out_ports;
 
 	const struct snd_ff_protocol *protocol;
+	u64 midi_high_addr;
 };
 
 struct snd_ff {
@@ -89,31 +100,24 @@ struct snd_ff {
 enum snd_ff_clock_src {
 	SND_FF_CLOCK_SRC_INTERNAL,
 	SND_FF_CLOCK_SRC_SPDIF,
-	SND_FF_CLOCK_SRC_ADAT,
+	SND_FF_CLOCK_SRC_ADAT1,
+	SND_FF_CLOCK_SRC_ADAT2,
 	SND_FF_CLOCK_SRC_WORD,
 	SND_FF_CLOCK_SRC_LTC,
-	/* TODO: perhaps ADAT2 and TCO exists. */
+	/* TODO: perhaps TCO exists. */
 };
 
 struct snd_ff_protocol {
-	int (*get_clock)(struct snd_ff *ff, unsigned int *rate,
-			 enum snd_ff_clock_src *src);
+	void (*handle_midi_msg)(struct snd_ff *ff, __le32 *buf, size_t length);
 	int (*begin_session)(struct snd_ff *ff, unsigned int rate);
 	void (*finish_session)(struct snd_ff *ff);
-	int (*switch_fetching_mode)(struct snd_ff *ff, bool enable);
-
-	void (*dump_sync_status)(struct snd_ff *ff,
-				 struct snd_info_buffer *buffer);
-	void (*dump_clock_config)(struct snd_ff *ff,
-				  struct snd_info_buffer *buffer);
-
-	u64 midi_high_addr_reg;
-	u64 midi_rx_port_0_reg;
-	u64 midi_rx_port_1_reg;
 };
 
+extern const struct snd_ff_protocol snd_ff_protocol_ff800;
 extern const struct snd_ff_protocol snd_ff_protocol_ff400;
 
+int snd_ff_transaction_get_clock(struct snd_ff *ff, unsigned int *rate,
+				 enum snd_ff_clock_src *src);
 int snd_ff_transaction_register(struct snd_ff *ff);
 int snd_ff_transaction_reregister(struct snd_ff *ff);
 void snd_ff_transaction_unregister(struct snd_ff *ff);
@@ -125,6 +129,8 @@ int amdtp_ff_add_pcm_hw_constraints(struct amdtp_stream *s,
 int amdtp_ff_init(struct amdtp_stream *s, struct fw_unit *unit,
 		  enum amdtp_stream_direction dir);
 
+int snd_ff_stream_get_multiplier_mode(enum cip_sfc sfc,
+				      enum snd_ff_stream_mode *mode);
 int snd_ff_stream_init_duplex(struct snd_ff *ff);
 void snd_ff_stream_destroy_duplex(struct snd_ff *ff);
 int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate);