diff options
Diffstat (limited to 'sound/firewire/bebob/bebob.c')
| -rw-r--r-- | sound/firewire/bebob/bebob.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/sound/firewire/bebob/bebob.c b/sound/firewire/bebob/bebob.c index 25222cc27e43..452317e53565 100644 --- a/sound/firewire/bebob/bebob.c +++ b/sound/firewire/bebob/bebob.c @@ -159,6 +159,30 @@ check_audiophile_booted(struct fw_unit *unit) return strncmp(name, "FW Audiophile Bootloader", 24) != 0; } +static int detect_quirks(struct snd_bebob *bebob, const struct ieee1394_device_id *entry) +{ + if (entry->vendor_id == VEN_MAUDIO1) { + switch (entry->model_id) { + case MODEL_MAUDIO_PROFIRELIGHTBRIDGE: + // 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. + bebob->quirks |= SND_BEBOB_QUIRK_INITIAL_DISCONTINUOUS_DBC; + break; + case MODEL_MAUDIO_FW1814: + case MODEL_MAUDIO_PROJECTMIX: + // At high sampling rate, M-Audio special firmware transmits empty packet + // with the value of dbc incremented by 8. + bebob->quirks |= SND_BEBOB_QUIRK_WRONG_DBC; + break; + default: + break; + } + } + + return 0; +} + static int bebob_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry) { unsigned int card_index; @@ -219,6 +243,10 @@ static int bebob_probe(struct fw_unit *unit, const struct ieee1394_device_id *en if (err < 0) goto error; + err = detect_quirks(bebob, entry); + if (err < 0) + goto error; + if (bebob->spec == &maudio_special_spec) { if (entry->model_id == MODEL_MAUDIO_FW1814) err = snd_bebob_maudio_special_discover(bebob, true); @@ -230,12 +258,6 @@ static int bebob_probe(struct fw_unit *unit, const struct ieee1394_device_id *en 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 (entry->vendor_id == VEN_MAUDIO1 && entry->model_id == MODEL_MAUDIO_PROFIRELIGHTBRIDGE) - bebob->discontinuity_quirk = true; - err = snd_bebob_stream_init_duplex(bebob); if (err < 0) goto error; |