diff options
| -rw-r--r-- | sound/firewire/bebob/bebob.c | 10 | ||||
| -rw-r--r-- | sound/firewire/bebob/bebob.h | 1 | ||||
| -rw-r--r-- | sound/firewire/bebob/bebob_stream.c | 12 |
3 files changed, 17 insertions, 6 deletions
diff --git a/sound/firewire/bebob/bebob.c b/sound/firewire/bebob/bebob.c index 90e98a6d1546..5938aa325f5e 100644 --- a/sound/firewire/bebob/bebob.c +++ b/sound/firewire/bebob/bebob.c @@ -64,6 +64,7 @@ static DECLARE_BITMAP(devices_used, SNDRV_CARDS); #define MODEL_MAUDIO_AUDIOPHILE_BOTH 0x00010060 #define MODEL_MAUDIO_FW1814 0x00010071 #define MODEL_MAUDIO_PROJECTMIX 0x00010091 +#define MODEL_MAUDIO_PROFIRELIGHTBRIDGE 0x000100a1 static int name_device(struct snd_bebob *bebob) @@ -210,6 +211,13 @@ do_registration(struct work_struct *work) if (err < 0) goto error; + // M-Audio ProFire Lightbridge has a quirk to transfer packets with discontinuous cycle or + // data block counter in early stage of packet streaming. The cycle span from the first + // packet with event is variable. + if (bebob->entry->vendor_id == VEN_MAUDIO1 && + bebob->entry->model_id == MODEL_MAUDIO_PROFIRELIGHTBRIDGE) + bebob->discontinuity_quirk = true; + err = snd_bebob_stream_init_duplex(bebob); if (err < 0) goto error; @@ -476,7 +484,7 @@ static const struct ieee1394_device_id bebob_id_table[] = { /* M-Audio NRV10 */ SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x00010081, &maudio_nrv10_spec), /* M-Audio, ProFireLightbridge */ - SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x000100a1, &spec_normal), + SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, MODEL_MAUDIO_PROFIRELIGHTBRIDGE, &spec_normal), /* Firewire 1814 */ SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x00010070, NULL), /* bootloader */ SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, MODEL_MAUDIO_FW1814, diff --git a/sound/firewire/bebob/bebob.h b/sound/firewire/bebob/bebob.h index 4e0ed84adbee..cba6793bfdb2 100644 --- a/sound/firewire/bebob/bebob.h +++ b/sound/firewire/bebob/bebob.h @@ -115,6 +115,7 @@ struct snd_bebob { /* For BeBoB version quirk. */ unsigned int version; + bool discontinuity_quirk; struct amdtp_domain domain; }; diff --git a/sound/firewire/bebob/bebob_stream.c b/sound/firewire/bebob/bebob_stream.c index 975670a29a72..91306da1bafe 100644 --- a/sound/firewire/bebob/bebob_stream.c +++ b/sound/firewire/bebob/bebob_stream.c @@ -7,7 +7,7 @@ #include "./bebob.h" -#define READY_TIMEOUT_MS 2500 +#define READY_TIMEOUT_MS 4000 /* * NOTE; @@ -644,12 +644,14 @@ int snd_bebob_stream_start_duplex(struct snd_bebob *bebob) if (err < 0) goto error; - // Some devices transfer isoc packets with discontinuous counter in the beginning - // of packet streaming. - if (bebob->version < 2) - tx_init_skip_cycles = 3200; + if (!bebob->discontinuity_quirk) + tx_init_skip_cycles = 0; else tx_init_skip_cycles = 16000; + + // MEMO: In the early stage of packet streaming, the device transfers NODATA packets. + // After several hundred cycles, it begins to multiplex event into the packet with + // syt information. err = amdtp_domain_start(&bebob->domain, tx_init_skip_cycles); if (err < 0) goto error; |