diff options
| -rw-r--r-- | sound/firewire/bebob/bebob_stream.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/sound/firewire/bebob/bebob_stream.c b/sound/firewire/bebob/bebob_stream.c index 1b264d0d63eb..895a113635af 100644 --- a/sound/firewire/bebob/bebob_stream.c +++ b/sound/firewire/bebob/bebob_stream.c @@ -7,7 +7,7 @@ #include "./bebob.h" -#define CALLBACK_TIMEOUT 2000 +#define CALLBACK_TIMEOUT 2500 #define FW_ISO_RESOURCE_DELAY 1000 /* @@ -639,6 +639,7 @@ int snd_bebob_stream_start_duplex(struct snd_bebob *bebob) if (!amdtp_stream_running(&bebob->rx_stream)) { unsigned int curr_rate; + unsigned int ir_delay_cycle; if (bebob->maudio_special_quirk) { err = bebob->spec->rate->get(bebob, &curr_rate); @@ -660,13 +661,18 @@ int snd_bebob_stream_start_duplex(struct snd_bebob *bebob) // The device postpones start of transmission mostly for 1 sec // after receives packets firstly. For safe, IR context starts - // 1.5 sec (=12000 cycles) later. This is within 2.0 sec - // (=CALLBACK_TIMEOUT). + // 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. - err = amdtp_domain_start(&bebob->domain, 12000); + if (bebob->version < 2) + ir_delay_cycle = 3200; + else + ir_delay_cycle = 16000; + err = amdtp_domain_start(&bebob->domain, ir_delay_cycle); if (err < 0) goto error; |