diff options
Diffstat (limited to 'sound/firewire/bebob')
| -rw-r--r-- | sound/firewire/bebob/bebob_stream.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/sound/firewire/bebob/bebob_stream.c b/sound/firewire/bebob/bebob_stream.c index b612ee3e33b6..8053d02b68f0 100644 --- a/sound/firewire/bebob/bebob_stream.c +++ b/sound/firewire/bebob/bebob_stream.c @@ -626,7 +626,7 @@ int snd_bebob_stream_start_duplex(struct snd_bebob *bebob) enum snd_bebob_clock_type src; struct amdtp_stream *master, *slave; unsigned int curr_rate; - unsigned int ir_delay_cycle; + unsigned int tx_init_skip_cycles; if (bebob->maudio_special_quirk) { err = bebob->spec->rate->get(bebob, &curr_rate); @@ -654,20 +654,13 @@ int snd_bebob_stream_start_duplex(struct snd_bebob *bebob) if (err < 0) goto error; - // The device postpones start of transmission mostly for 1 sec - // after receives packets firstly. For safe, IR context starts - // 0.4 sec (=3200 cycles) later to version 1 or 2 firmware, - // 2.0 sec (=16000 cycles) for version 3 firmware. This is - // within 2.5 sec (=CALLBACK_TIMEOUT). - // Furthermore, some devices transfer isoc packets with - // discontinuous counter in the beginning of packet streaming. - // The delay has an effect to avoid detection of this - // discontinuity. + // Some devices transfer isoc packets with discontinuous counter in the beginning + // of packet streaming. if (bebob->version < 2) - ir_delay_cycle = 3200; + tx_init_skip_cycles = 3200; else - ir_delay_cycle = 16000; - err = amdtp_domain_start(&bebob->domain, ir_delay_cycle); + tx_init_skip_cycles = 16000; + err = amdtp_domain_start(&bebob->domain, tx_init_skip_cycles); if (err < 0) goto error; @@ -684,6 +677,8 @@ int snd_bebob_stream_start_duplex(struct snd_bebob *bebob) } } + // Some devices postpone start of transmission mostly for 1 sec after receives + // packets firstly. if (!amdtp_stream_wait_callback(&bebob->rx_stream, CALLBACK_TIMEOUT) || !amdtp_stream_wait_callback(&bebob->tx_stream, |