ALSA: fireface: share register for async transaction of MIDI messages

As long as investigating packet dumps from Fireface 400/800, a register
to receive asynchronous transactions for MIDI messages is the same. For
Fireface 800, minor register is used.

This commit declares macros for the transactions and obsoletes
model-specific parameters.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/fireface/ff-protocol-ff400.c

@@ -16,8 +16,6 @@
 #define FF400_ISOC_COMM_STOP	0x000080100510ull
 
 #define FF400_MIDI_HIGH_ADDR	0x0000801003f4ull
-#define FF400_MIDI_RX_PORT_0	0x000080180000ull
-#define FF400_MIDI_RX_PORT_1	0x000080190000ull
 
 static int ff400_begin_session(struct snd_ff *ff, unsigned int rate)
 {
@@ -115,6 +113,4 @@ const struct snd_ff_protocol snd_ff_protocol_ff400 = {
 	.switch_fetching_mode	= ff400_switch_fetching_mode,
 
 	.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,
 };

sound/firewire/fireface/ff-transaction.c

@@ -8,6 +8,9 @@
 
 #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)
 {
@@ -153,10 +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;
 	}
 

sound/firewire/fireface/ff.h

@@ -107,8 +107,6 @@ struct snd_ff_protocol {
 	int (*switch_fetching_mode)(struct snd_ff *ff, bool enable);
 
 	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_ff400;