4 files changed, 58 insertions, 19 deletions

diff --git a/sound/firewire/dice/dice-pcm.c b/sound/firewire/dice/dice-pcm.c
index b9ce026..062b7a3 100644
--- a/sound/firewire/dice/dice-pcm.c
+++ b/sound/firewire/dice/dice-pcm.c
@@ -140,6 +140,8 @@ end:
 static int pcm_open(struct snd_pcm_substream *substream)
 {
 	struct snd_dice *dice = substream->private_data;
+	unsigned int source, rate;
+	bool internal;
 	int err;
 
 	err = snd_dice_stream_lock_try(dice);
@@ -149,6 +151,39 @@ static int pcm_open(struct snd_pcm_substream *substream)
 	err = init_hw_info(dice, substream);
 	if (err < 0)
 		goto err_locked;
+
+	err = snd_dice_transaction_get_clock_source(dice, &source);
+	if (err < 0)
+		goto err_locked;
+	switch (source) {
+	case CLOCK_SOURCE_AES1:
+	case CLOCK_SOURCE_AES2:
+	case CLOCK_SOURCE_AES3:
+	case CLOCK_SOURCE_AES4:
+	case CLOCK_SOURCE_AES_ANY:
+	case CLOCK_SOURCE_ADAT:
+	case CLOCK_SOURCE_TDIF:
+	case CLOCK_SOURCE_WC:
+		internal = false;
+		break;
+	default:
+		internal = true;
+		break;
+	}
+
+	/*
+	 * When source of clock is not internal, available sampling rate is
+	 * limited at current sampling rate.
+	 */
+	if (!internal) {
+		err = snd_dice_transaction_get_rate(dice, &rate);
+		if (err < 0)
+			goto err_locked;
+		substream->runtime->hw.rate_min = rate;
+		substream->runtime->hw.rate_max = rate;
+	}
+
+	snd_pcm_set_sync(substream);
 end:
 	return err;
 err_locked:
diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c
index e60b84d..20765a0 100644
--- a/sound/firewire/dice/dice-stream.c
+++ b/sound/firewire/dice/dice-stream.c
@@ -161,9 +161,29 @@ end:
 
 static int get_sync_mode(struct snd_dice *dice, enum cip_flags *sync_mode)
 {
-	/* Currently, clock source is fixed at SYT-Match mode. */
-	*sync_mode = 0;
-	return 0;
+	u32 source;
+	int err;
+
+	err = snd_dice_transaction_get_clock_source(dice, &source);
+	if (err < 0)
+		goto end;
+
+	switch (source) {
+	/* So-called 'SYT Match' modes, sync_to_syt value of packets received */
+	case CLOCK_SOURCE_ARX4:	/* in 4th stream */
+	case CLOCK_SOURCE_ARX3:	/* in 3rd stream */
+	case CLOCK_SOURCE_ARX2:	/* in 2nd stream */
+		err = -ENOSYS;
+		break;
+	case CLOCK_SOURCE_ARX1:	/* in 1st stream, which this driver uses */
+		*sync_mode = 0;
+		break;
+	default:
+		*sync_mode = CIP_SYNC_TO_DEVICE;
+		break;
+	}
+end:
+	return err;
 }
 
 int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)
@@ -310,15 +330,6 @@ int snd_dice_stream_init_duplex(struct snd_dice *dice)
 		goto end;
 
 	err = init_stream(dice, &dice->rx_stream);
-	if (err < 0)
-		goto end;
-
-	/* Currently, clock source is fixed at SYT-Match mode. */
-	err = snd_dice_transaction_set_clock_source(dice, CLOCK_SOURCE_ARX1);
-	if (err < 0) {
-		destroy_stream(dice, &dice->rx_stream);
-		destroy_stream(dice, &dice->tx_stream);
-	}
 end:
 	return err;
 }
diff --git a/sound/firewire/dice/dice-transaction.c b/sound/firewire/dice/dice-transaction.c
index 1fe304c..aee7461 100644
--- a/sound/firewire/dice/dice-transaction.c
+++ b/sound/firewire/dice/dice-transaction.c
@@ -137,11 +137,6 @@ int snd_dice_transaction_get_clock_source(struct snd_dice *dice,
 
 	return err;
 }
-int snd_dice_transaction_set_clock_source(struct snd_dice *dice,
-					  unsigned int source)
-{
-	return set_clock_info(dice, UINT_MAX, source);
-}
 
 int snd_dice_transaction_get_rate(struct snd_dice *dice, unsigned int *rate)
 {
diff --git a/sound/firewire/dice/dice.h b/sound/firewire/dice/dice.h
index a62ee22..f30326e 100644
--- a/sound/firewire/dice/dice.h
+++ b/sound/firewire/dice/dice.h
@@ -152,8 +152,6 @@ static inline int snd_dice_transaction_read_sync(struct snd_dice *dice,
 					 buf, len);
 }
 
-int snd_dice_transaction_set_clock_source(struct snd_dice *dice,
-					  unsigned int source);
 int snd_dice_transaction_get_clock_source(struct snd_dice *dice,
 					  unsigned int *source);
 int snd_dice_transaction_set_rate(struct snd_dice *dice, unsigned int rate);