ALSA: firewire-motu: add a flag for AES/EBU on XLR interface

MOTU Traveler supports AES/EBU on XLR interface and data block of rx/tx
packet includes two chunk for the interface. This commit adds a flag
for this purpose.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/motu/motu-protocol-v2.c

@@ -160,6 +160,11 @@ static void calculate_fixed_part(struct snd_motu_packet_format *formats,
 		pcm_chunks[1] += 2;
 	}
 
+	if (flags & SND_MOTU_SPEC_HAS_AESEBU_IFACE) {
+		pcm_chunks[0] += 2;
+		pcm_chunks[1] += 2;
+	}
+
 	/*
 	 * All of v2 models have a pair of coaxial interfaces for digital in/out
 	 * port. At 44.1/48.0/88.2/96.0 kHz, packets includes PCM from these

sound/firewire/motu/motu-protocol-v3.c

@@ -199,6 +199,11 @@ static void calculate_fixed_part(struct snd_motu_packet_format *formats,
 		pcm_chunks[1] += 2;
 	}
 
+	if (flags & SND_MOTU_SPEC_HAS_AESEBU_IFACE) {
+		pcm_chunks[0] += 2;
+		pcm_chunks[1] += 2;
+	}
+
 	/*
 	 * At least, packets have two data chunks for S/PDIF on coaxial
 	 * interface.

sound/firewire/motu/motu.h

@@ -79,7 +79,7 @@ enum snd_motu_spec_flags {
 	SND_MOTU_SPEC_TX_MICINST_CHUNK	= 0x0004,
 	SND_MOTU_SPEC_TX_RETURN_CHUNK	= 0x0008,
 	SND_MOTU_SPEC_TX_REVERB_CHUNK	= 0x0010,
-	SND_MOTU_SPEC_TX_AESEBU_CHUNK	= 0x0020,
+	SND_MOTU_SPEC_HAS_AESEBU_IFACE	= 0x0020,
 	SND_MOTU_SPEC_HAS_OPT_IFACE_A	= 0x0040,
 	SND_MOTU_SPEC_HAS_OPT_IFACE_B	= 0x0080,
 	SND_MOTU_SPEC_RX_MIDI_2ND_Q	= 0x0100,