diff options
Diffstat (limited to 'sound/firewire/fireworks/fireworks_stream.c')
| -rw-r--r-- | sound/firewire/fireworks/fireworks_stream.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/sound/firewire/fireworks/fireworks_stream.c b/sound/firewire/fireworks/fireworks_stream.c index 2206af0fef42..ac66f08acd6b 100644 --- a/sound/firewire/fireworks/fireworks_stream.c +++ b/sound/firewire/fireworks/fireworks_stream.c @@ -6,7 +6,7 @@ */ #include "./fireworks.h" -#define CALLBACK_TIMEOUT 100 +#define READY_TIMEOUT_MS 1000 static int init_stream(struct snd_efw *efw, struct amdtp_stream *stream) { @@ -29,7 +29,7 @@ static int init_stream(struct snd_efw *efw, struct amdtp_stream *stream) if (err < 0) return err; - err = amdtp_am824_init(stream, efw->unit, s_dir, CIP_BLOCKING); + err = amdtp_am824_init(stream, efw->unit, s_dir, CIP_BLOCKING | CIP_UNAWARE_SYT); if (err < 0) { amdtp_stream_destroy(stream); cmp_connection_destroy(conn); @@ -264,6 +264,15 @@ int snd_efw_stream_start_duplex(struct snd_efw *efw) return err; if (!amdtp_stream_running(&efw->rx_stream)) { + unsigned int tx_init_skip_cycles; + + // Audiofire 2/4 skip an isochronous cycle several thousands after starting + // packet transmission. + if (efw->is_fireworks3 && !efw->is_af9) + tx_init_skip_cycles = 6000; + else + tx_init_skip_cycles = 0; + err = start_stream(efw, &efw->rx_stream, rate); if (err < 0) goto error; @@ -272,15 +281,14 @@ int snd_efw_stream_start_duplex(struct snd_efw *efw) if (err < 0) goto error; - err = amdtp_domain_start(&efw->domain, 0); + // NOTE: The device ignores presentation time expressed by the value of syt field + // of CIP header in received packets. The sequence of the number of data blocks per + // packet is important for media clock recovery. + err = amdtp_domain_start(&efw->domain, tx_init_skip_cycles, true, false); if (err < 0) goto error; - // Wait first callback. - if (!amdtp_stream_wait_callback(&efw->rx_stream, - CALLBACK_TIMEOUT) || - !amdtp_stream_wait_callback(&efw->tx_stream, - CALLBACK_TIMEOUT)) { + if (!amdtp_domain_wait_ready(&efw->domain, READY_TIMEOUT_MS)) { err = -ETIMEDOUT; goto error; } |