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-rw-r--r--sound/firewire/oxfw/oxfw-stream.c7
-rw-r--r--sound/firewire/oxfw/oxfw.c8
-rw-r--r--sound/firewire/oxfw/oxfw.h5
3 files changed, 19 insertions, 1 deletions
diff --git a/sound/firewire/oxfw/oxfw-stream.c b/sound/firewire/oxfw/oxfw-stream.c
index fff18b5d4e05..f4a702def397 100644
--- a/sound/firewire/oxfw/oxfw-stream.c
+++ b/sound/firewire/oxfw/oxfw-stream.c
@@ -9,7 +9,7 @@
#include <linux/delay.h>
#define AVC_GENERIC_FRAME_MAXIMUM_BYTES 512
-#define READY_TIMEOUT_MS 200
+#define READY_TIMEOUT_MS 600
/*
* According to datasheet of Oxford Semiconductor:
@@ -367,6 +367,11 @@ int snd_oxfw_stream_start_duplex(struct snd_oxfw *oxfw)
// Just after changing sampling transfer frequency, many cycles are
// skipped for packet transmission.
tx_init_skip_cycles = 400;
+ } else if (oxfw->quirks & SND_OXFW_QUIRK_VOLUNTARY_RECOVERY) {
+ // It takes a bit time for target device to adjust event frequency
+ // according to nominal event frequency in isochronous packets from
+ // ALSA oxfw driver.
+ tx_init_skip_cycles = 4000;
} else {
replay_seq = true;
}
diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c
index daf731364695..b496f87841ae 100644
--- a/sound/firewire/oxfw/oxfw.c
+++ b/sound/firewire/oxfw/oxfw.c
@@ -25,6 +25,7 @@
#define MODEL_SATELLITE 0x00200f
#define MODEL_SCS1M 0x001000
#define MODEL_DUET_FW 0x01dddd
+#define MODEL_ONYX_1640I 0x001640
#define SPECIFIER_1394TA 0x00a02d
#define VERSION_AVC 0x010001
@@ -192,6 +193,13 @@ static int detect_quirks(struct snd_oxfw *oxfw, const struct ieee1394_device_id
// OXFW971-based models may transfer events by blocking method.
if (!(oxfw->quirks & SND_OXFW_QUIRK_JUMBO_PAYLOAD))
oxfw->quirks |= SND_OXFW_QUIRK_BLOCKING_TRANSMISSION;
+
+ if (model == MODEL_ONYX_1640I) {
+ //Unless receiving packets without NOINFO packet, the device transfers
+ //mostly half of events in packets than expected.
+ oxfw->quirks |= SND_OXFW_QUIRK_IGNORE_NO_INFO_PACKET |
+ SND_OXFW_QUIRK_VOLUNTARY_RECOVERY;
+ }
}
return 0;
diff --git a/sound/firewire/oxfw/oxfw.h b/sound/firewire/oxfw/oxfw.h
index c13034f6c2ca..d728e451a25c 100644
--- a/sound/firewire/oxfw/oxfw.h
+++ b/sound/firewire/oxfw/oxfw.h
@@ -47,6 +47,11 @@ enum snd_oxfw_quirk {
// 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,
+ // Loud Technologies Mackie Onyx 1640i seems to configure OXFW971 ASIC so that it decides
+ // event frequency according to events in received isochronous packets. The device looks to
+ // performs media clock recovery voluntarily. In the recovery, the packets with NO_INFO
+ // are ignored, thus driver should transfer packets with timestamp.
+ SND_OXFW_QUIRK_VOLUNTARY_RECOVERY = 0x20,
};
/* This is an arbitrary number for convinience. */