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-rw-r--r--sound/firewire/oxfw/oxfw-stream.c9
-rw-r--r--sound/firewire/oxfw/oxfw.c6
-rw-r--r--sound/firewire/oxfw/oxfw.h5
3 files changed, 17 insertions, 3 deletions
diff --git a/sound/firewire/oxfw/oxfw-stream.c b/sound/firewire/oxfw/oxfw-stream.c
index 0ef242fdd3bc..fff18b5d4e05 100644
--- a/sound/firewire/oxfw/oxfw-stream.c
+++ b/sound/firewire/oxfw/oxfw-stream.c
@@ -153,7 +153,7 @@ static int init_stream(struct snd_oxfw *oxfw, struct amdtp_stream *stream)
struct cmp_connection *conn;
enum cmp_direction c_dir;
enum amdtp_stream_direction s_dir;
- unsigned int flags = CIP_UNAWARE_SYT;
+ unsigned int flags = 0;
int err;
if (!(oxfw->quirks & SND_OXFW_QUIRK_BLOCKING_TRANSMISSION))
@@ -161,6 +161,13 @@ static int init_stream(struct snd_oxfw *oxfw, struct amdtp_stream *stream)
else
flags |= CIP_BLOCKING;
+ // OXFW 970/971 has no function to generate playback timing according to the sequence
+ // of value in syt field, thus the packet should include NO_INFO value in the field.
+ // However, some models just ignore data blocks in packet with NO_INFO for audio data
+ // processing.
+ if (!(oxfw->quirks & SND_OXFW_QUIRK_IGNORE_NO_INFO_PACKET))
+ flags |= CIP_UNAWARE_SYT;
+
if (stream == &oxfw->tx_stream) {
conn = &oxfw->out_conn;
c_dir = CMP_OUTPUT;
diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c
index 84971d78d152..cb5b5e3a481b 100644
--- a/sound/firewire/oxfw/oxfw.c
+++ b/sound/firewire/oxfw/oxfw.c
@@ -159,8 +159,10 @@ static int detect_quirks(struct snd_oxfw *oxfw, const struct ieee1394_device_id
return snd_oxfw_scs1x_add(oxfw);
}
- if (entry->vendor_id == OUI_APOGEE && entry->model_id == MODEL_DUET_FW)
- oxfw->quirks |= SND_OXFW_QUIRK_BLOCKING_TRANSMISSION;
+ if (entry->vendor_id == OUI_APOGEE && entry->model_id == MODEL_DUET_FW) {
+ oxfw->quirks |= SND_OXFW_QUIRK_BLOCKING_TRANSMISSION |
+ SND_OXFW_QUIRK_IGNORE_NO_INFO_PACKET;
+ }
/*
* TASCAM FireOne has physical control and requires a pair of additional
diff --git a/sound/firewire/oxfw/oxfw.h b/sound/firewire/oxfw/oxfw.h
index ee47abcb0c90..c13034f6c2ca 100644
--- a/sound/firewire/oxfw/oxfw.h
+++ b/sound/firewire/oxfw/oxfw.h
@@ -42,6 +42,11 @@ enum snd_oxfw_quirk {
SND_OXFW_QUIRK_BLOCKING_TRANSMISSION = 0x04,
// Stanton SCS1.d and SCS1.m support unique transaction.
SND_OXFW_QUIRK_SCS_TRANSACTION = 0x08,
+ // Apogee Duet FireWire ignores data blocks in packet with NO_INFO for audio data
+ // processing, while output level meter moves. Any value in syt field of packet takes
+ // the device to process audio data even if the value is invalid in a point of
+ // IEC 61883-1/6.
+ SND_OXFW_QUIRK_IGNORE_NO_INFO_PACKET = 0x10,
};
/* This is an arbitrary number for convinience. */