ALSA: firewire-lib: pass data block counter to data block processing layer

This is a preparation for future commit that 'struct
amdtp_stream.data_block_count' does not represent the value of
data block count for current data block.

However, data block count is required for calculation of sequence index
in sequence-multiplied data channel. Some of data block processing layer
require it; e.g. for AM824 data block.

This commit passes data block count to the processing layer.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/amdtp-am824.c

@@ -284,7 +284,7 @@ static void midi_rate_use_one_byte(struct amdtp_stream *s, unsigned int port)
 }
 
 static void write_midi_messages(struct amdtp_stream *s, __be32 *buffer,
-				unsigned int frames)
+			unsigned int frames, unsigned int data_block_counter)
 {
 	struct amdtp_am824 *p = s->protocol;
 	unsigned int f, port;
@@ -293,7 +293,7 @@ static void write_midi_messages(struct amdtp_stream *s, __be32 *buffer,
 	for (f = 0; f < frames; f++) {
 		b = (u8 *)&buffer[p->midi_position];
 
-		port = (s->data_block_counter + f) % 8;
+		port = (data_block_counter + f) % 8;
 		if (f < MAX_MIDI_RX_BLOCKS &&
 		    midi_ratelimit_per_packet(s, port) &&
 		    p->midi[port] != NULL &&
@@ -311,8 +311,8 @@ static void write_midi_messages(struct amdtp_stream *s, __be32 *buffer,
 	}
 }
 
-static void read_midi_messages(struct amdtp_stream *s,
-			       __be32 *buffer, unsigned int frames)
+static void read_midi_messages(struct amdtp_stream *s, __be32 *buffer,
+			unsigned int frames, unsigned int data_block_counter)
 {
 	struct amdtp_am824 *p = s->protocol;
 	int len;
@@ -323,7 +323,7 @@ static void read_midi_messages(struct amdtp_stream *s,
 		unsigned int port = f;
 
 		if (!(s->flags & CIP_UNALIGHED_DBC))
-			port += s->data_block_counter;
+			port += data_block_counter;
 		port %= 8;
 		b = (u8 *)&buffer[p->midi_position];
 
@@ -335,8 +335,9 @@ static void read_midi_messages(struct amdtp_stream *s,
 	}
 }
 
-static unsigned int process_rx_data_blocks(struct amdtp_stream *s, __be32 *buffer,
-					   unsigned int data_blocks, unsigned int *syt)
+static unsigned int process_rx_data_blocks(struct amdtp_stream *s,
+			__be32 *buffer, unsigned int data_blocks,
+			unsigned int data_block_counter, unsigned int *syt)
 {
 	struct amdtp_am824 *p = s->protocol;
 	struct snd_pcm_substream *pcm = READ_ONCE(s->pcm);
@@ -351,13 +352,14 @@ static unsigned int process_rx_data_blocks(struct amdtp_stream *s, __be32 *buffe
 	}
 
 	if (p->midi_ports)
-		write_midi_messages(s, buffer, data_blocks);
+		write_midi_messages(s, buffer, data_blocks, data_block_counter);
 
 	return pcm_frames;
 }
 
-static unsigned int process_tx_data_blocks(struct amdtp_stream *s, __be32 *buffer,
-					   unsigned int data_blocks, unsigned int *syt)
+static unsigned int process_tx_data_blocks(struct amdtp_stream *s,
+			__be32 *buffer, unsigned int data_blocks,
+			unsigned int data_block_counter, unsigned int *syt)
 {
 	struct amdtp_am824 *p = s->protocol;
 	struct snd_pcm_substream *pcm = READ_ONCE(s->pcm);
@@ -371,7 +373,7 @@ static unsigned int process_tx_data_blocks(struct amdtp_stream *s, __be32 *buffe
 	}
 
 	if (p->midi_ports)
-		read_midi_messages(s, buffer, data_blocks);
+		read_midi_messages(s, buffer, data_blocks, data_block_counter);
 
 	return pcm_frames;
 }

sound/firewire/amdtp-stream.c

@@ -722,7 +722,7 @@ static void out_stream_callback(struct fw_iso_context *context, u32 tstamp,
 		data_blocks = calculate_data_blocks(s, syt);
 		buffer = s->buffer.packets[s->packet_index].buffer;
 		pcm_frames = s->process_data_blocks(s, buffer, data_blocks,
-						    &syt);
+						s->data_block_counter, &syt);
 
 		build_it_pkt_header(s, cycle, &template.params, data_blocks,
 				    syt, i);
@@ -776,7 +776,7 @@ static void in_stream_callback(struct fw_iso_context *context, u32 tstamp,
 		if (err >= 0) {
 			buffer = s->buffer.packets[s->packet_index].buffer;
 			pcm_frames = s->process_data_blocks(s, buffer,
-							    data_blocks, &syt);
+				data_blocks, s->data_block_counter, &syt);
 
 			if (!(s->flags & CIP_DBC_IS_END_EVENT)) {
 				s->data_block_counter += data_blocks;

sound/firewire/amdtp-stream.h

@@ -99,6 +99,7 @@ typedef unsigned int (*amdtp_stream_process_data_blocks_t)(
 						struct amdtp_stream *s,
 						__be32 *buffer,
 						unsigned int data_blocks,
+						unsigned int data_block_counter,
 						unsigned int *syt);
 struct amdtp_stream {
 	struct fw_unit *unit;

sound/firewire/digi00x/amdtp-dot.c

@@ -234,7 +234,7 @@ static inline void midi_use_bytes(struct amdtp_stream *s,
 }
 
 static void write_midi_messages(struct amdtp_stream *s, __be32 *buffer,
-				unsigned int data_blocks)
+		unsigned int data_blocks, unsigned int data_block_counter)
 {
 	struct amdtp_dot *p = s->protocol;
 	unsigned int f, port;
@@ -242,7 +242,7 @@ static void write_midi_messages(struct amdtp_stream *s, __be32 *buffer,
 	u8 *b;
 
 	for (f = 0; f < data_blocks; f++) {
-		port = (s->data_block_counter + f) % 8;
+		port = (data_block_counter + f) % 8;
 		b = (u8 *)&buffer[0];
 
 		len = 0;
@@ -330,9 +330,8 @@ void amdtp_dot_midi_trigger(struct amdtp_stream *s, unsigned int port,
 }
 
 static unsigned int process_tx_data_blocks(struct amdtp_stream *s,
-					   __be32 *buffer,
-					   unsigned int data_blocks,
-					   unsigned int *syt)
+			__be32 *buffer, unsigned int data_blocks,
+			unsigned int data_block_counter, unsigned int *syt)
 {
 	struct snd_pcm_substream *pcm;
 	unsigned int pcm_frames;
@@ -351,9 +350,8 @@ static unsigned int process_tx_data_blocks(struct amdtp_stream *s,
 }
 
 static unsigned int process_rx_data_blocks(struct amdtp_stream *s,
-					   __be32 *buffer,
-					   unsigned int data_blocks,
-					   unsigned int *syt)
+			__be32 *buffer, unsigned int data_blocks,
+			unsigned int data_block_counter, unsigned int *syt)
 {
 	struct snd_pcm_substream *pcm;
 	unsigned int pcm_frames;
@@ -367,7 +365,7 @@ static unsigned int process_rx_data_blocks(struct amdtp_stream *s,
 		pcm_frames = 0;
 	}
 
-	write_midi_messages(s, buffer, data_blocks);
+	write_midi_messages(s, buffer, data_blocks, data_block_counter);
 
 	return pcm_frames;
 }

sound/firewire/fireface/amdtp-ff.c

@@ -103,9 +103,8 @@ int amdtp_ff_add_pcm_hw_constraints(struct amdtp_stream *s,
 }
 
 static unsigned int process_rx_data_blocks(struct amdtp_stream *s,
-					   __be32 *buffer,
-					   unsigned int data_blocks,
-					   unsigned int *syt)
+			__be32 *buffer, unsigned int data_blocks,
+			unsigned int data_block_counter, unsigned int *syt)
 {
 	struct snd_pcm_substream *pcm = READ_ONCE(s->pcm);
 	unsigned int pcm_frames;
@@ -122,9 +121,8 @@ static unsigned int process_rx_data_blocks(struct amdtp_stream *s,
 }
 
 static unsigned int process_tx_data_blocks(struct amdtp_stream *s,
-					   __be32 *buffer,
-					   unsigned int data_blocks,
-					   unsigned int *syt)
+			__be32 *buffer, unsigned int data_blocks,
+			unsigned int data_block_counter, unsigned int *syt)
 {
 	struct snd_pcm_substream *pcm = READ_ONCE(s->pcm);
 	unsigned int pcm_frames;

sound/firewire/motu/amdtp-motu.c

@@ -299,8 +299,8 @@ static void __maybe_unused copy_message(u64 *frames, __be32 *buffer,
 }
 
 static unsigned int process_tx_data_blocks(struct amdtp_stream *s,
-				__be32 *buffer, unsigned int data_blocks,
-				unsigned int *syt)
+			__be32 *buffer, unsigned int data_blocks,
+			unsigned int data_block_counter, unsigned int *syt)
 {
 	struct amdtp_motu *p = s->protocol;
 	struct snd_pcm_substream *pcm;
@@ -361,8 +361,8 @@ static void write_sph(struct amdtp_stream *s, __be32 *buffer,
 }
 
 static unsigned int process_rx_data_blocks(struct amdtp_stream *s,
-				__be32 *buffer, unsigned int data_blocks,
-				unsigned int *syt)
+			__be32 *buffer, unsigned int data_blocks,
+			unsigned int data_block_counter, unsigned int *syt)
 {
 	struct amdtp_motu *p = (struct amdtp_motu *)s->protocol;
 	struct snd_pcm_substream *pcm;

sound/firewire/tascam/amdtp-tascam.c

@@ -166,9 +166,8 @@ static void read_status_messages(struct amdtp_stream *s,
 }
 
 static unsigned int process_tx_data_blocks(struct amdtp_stream *s,
-					   __be32 *buffer,
-					   unsigned int data_blocks,
-					   unsigned int *syt)
+			__be32 *buffer, unsigned int data_blocks,
+			unsigned int data_block_counter, unsigned int *syt)
 {
 	struct snd_pcm_substream *pcm;
 
@@ -182,9 +181,8 @@ static unsigned int process_tx_data_blocks(struct amdtp_stream *s,
 }
 
 static unsigned int process_rx_data_blocks(struct amdtp_stream *s,
-					   __be32 *buffer,
-					   unsigned int data_blocks,
-					   unsigned int *syt)
+			__be32 *buffer, unsigned int data_blocks,
+			unsigned int data_block_counter, unsigned int *syt)
 {
 	struct snd_pcm_substream *pcm;