3 files changed, 17 insertions, 3 deletions
diff --git a/sound/firewire/motu/motu-protocol-v2.c b/sound/firewire/motu/motu-protocol-v2.c
index e2913cb54da8..6cd7a5f1f46c 100644
--- a/sound/firewire/motu/motu-protocol-v2.c
+++ b/sound/firewire/motu/motu-protocol-v2.c
@@ -306,7 +306,8 @@ const struct snd_motu_spec snd_motu_spec_828mk2 = {
 		 SND_MOTU_SPEC_HAS_OPT_IFACE_A |
 		 SND_MOTU_SPEC_RX_MIDI_2ND_Q |
 		 SND_MOTU_SPEC_TX_MIDI_2ND_Q,
-
+	.tx_fixed_pcm_chunks = {14, 14, 0},
+	.rx_fixed_pcm_chunks = {14, 14, 0},
 	.analog_in_ports = 8,
 	.analog_out_ports = 8,
 };
@@ -321,7 +322,8 @@ const struct snd_motu_spec snd_motu_spec_traveler = {
 		 SND_MOTU_SPEC_HAS_OPT_IFACE_A |
 		 SND_MOTU_SPEC_RX_MIDI_2ND_Q |
 		 SND_MOTU_SPEC_TX_MIDI_2ND_Q,
-
+	.tx_fixed_pcm_chunks = {14, 14, 8},
+	.rx_fixed_pcm_chunks = {14, 14, 8},
 	.analog_in_ports = 8,
 	.analog_out_ports = 8,
 };
@@ -335,6 +337,8 @@ const struct snd_motu_spec snd_motu_spec_ultralite = {
 		 SND_MOTU_SPEC_RX_MIDI_2ND_Q |
 		 SND_MOTU_SPEC_TX_MIDI_2ND_Q |
 		 SND_MOTU_SPEC_RX_SEPARATED_MAIN,
+	.tx_fixed_pcm_chunks = {14, 14, 0},
+	.rx_fixed_pcm_chunks = {14, 14, 0},
 	.analog_in_ports = 8,
 	.analog_out_ports = 8,
 };
@@ -349,6 +353,8 @@ const struct snd_motu_spec snd_motu_spec_8pre = {
 		 SND_MOTU_SPEC_HAS_OPT_IFACE_B |
 		 SND_MOTU_SPEC_RX_MIDI_2ND_Q |
 		 SND_MOTU_SPEC_TX_MIDI_2ND_Q,
+	.tx_fixed_pcm_chunks = {10, 6, 0},
+	.rx_fixed_pcm_chunks = {10, 6, 0},
 	.analog_in_ports = 8,
 	.analog_out_ports = 2,
 };
diff --git a/sound/firewire/motu/motu-protocol-v3.c b/sound/firewire/motu/motu-protocol-v3.c
index 8192bcdd1b37..370d22da276e 100644
--- a/sound/firewire/motu/motu-protocol-v3.c
+++ b/sound/firewire/motu/motu-protocol-v3.c
@@ -324,7 +324,8 @@ const struct snd_motu_spec snd_motu_spec_828mk3 = {
 		 SND_MOTU_SPEC_HAS_OPT_IFACE_B |
 		 SND_MOTU_SPEC_RX_MIDI_3RD_Q |
 		 SND_MOTU_SPEC_TX_MIDI_3RD_Q,
-
+	.tx_fixed_pcm_chunks = {18, 18, 14},
+	.rx_fixed_pcm_chunks = {14, 14, 10},
 	.analog_in_ports = 8,
 	.analog_out_ports = 8,
 };
@@ -338,6 +339,8 @@ const struct snd_motu_spec snd_motu_spec_audio_express = {
 		 SND_MOTU_SPEC_RX_SEPARATED_MAIN |
 		 SND_MOTU_SPEC_RX_MIDI_2ND_Q |
 		 SND_MOTU_SPEC_TX_MIDI_3RD_Q,
+	.tx_fixed_pcm_chunks = {10, 10, 0},
+	.rx_fixed_pcm_chunks = {10, 10, 0},
 	.analog_in_ports = 2,
 	.analog_out_ports = 4,
 };
@@ -349,6 +352,8 @@ const struct snd_motu_spec snd_motu_spec_4pre = {
 		 SND_MOTU_SPEC_TX_MICINST_CHUNK |
 		 SND_MOTU_SPEC_TX_RETURN_CHUNK |
 		 SND_MOTU_SPEC_RX_SEPARATED_MAIN,
+	.tx_fixed_pcm_chunks = {10, 10, 0},
+	.rx_fixed_pcm_chunks = {10, 10, 0},
 	.analog_in_ports = 2,
 	.analog_out_ports = 2,
 };
diff --git a/sound/firewire/motu/motu.h b/sound/firewire/motu/motu.h
index f8274ed94766..790aa34d396f 100644
--- a/sound/firewire/motu/motu.h
+++ b/sound/firewire/motu/motu.h
@@ -118,6 +118,9 @@ struct snd_motu_spec {
 	enum snd_motu_protocol_version protocol_version;
 	enum snd_motu_spec_flags flags;
 
+	unsigned char tx_fixed_pcm_chunks[3];
+	unsigned char rx_fixed_pcm_chunks[3];
+
 	unsigned char analog_in_ports;
 	unsigned char analog_out_ports;
 };