ALSA: fireworks/firewire-lib: add support for recent firmware quirk

[karo-tx-linux.git] / sound / firewire / fireworks / fireworks_stream.c

diff --git a/sound/firewire/fireworks/fireworks_stream.c b/sound/firewire/fireworks/fireworks_stream.c
index c55db1bddc80a0ceab4997279643f73840943cef..7e353f1f7bff359ea8845630aeff2521759e508f 100644 (file)
--- a/sound/firewire/fireworks/fireworks_stream.c
+++ b/sound/firewire/fireworks/fireworks_stream.c
@@ -172,6 +172,15 @@ int snd_efw_stream_init_duplex(struct snd_efw *efw)
        efw->tx_stream.flags |= CIP_DBC_IS_END_EVENT;
        /* Fireworks reset dbc at bus reset. */
        efw->tx_stream.flags |= CIP_SKIP_DBC_ZERO_CHECK;
+       /*
+        * But Recent firmwares starts packets with non-zero dbc.
+        * Driver version 5.7.6 installs firmware version 5.7.3.
+        */
+       if (efw->is_fireworks3 &&
+           (efw->firmware_version == 0x5070000 ||
+            efw->firmware_version == 0x5070300 ||
+            efw->firmware_version == 0x5080000))
+               efw->tx_stream.tx_first_dbc = 0x02;
        /* AudioFire9 always reports wrong dbs. */
        if (efw->is_af9)
                efw->tx_stream.flags |= CIP_WRONG_DBS;