diff options
Diffstat (limited to 'sound/firewire/dice/dice.h')
| -rw-r--r-- | sound/firewire/dice/dice.h | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/sound/firewire/dice/dice.h b/sound/firewire/dice/dice.h index 423cdba99726..8fba87d83810 100644 --- a/sound/firewire/dice/dice.h +++ b/sound/firewire/dice/dice.h @@ -39,6 +39,29 @@ #include "../lib.h" #include "dice-interface.h" +/* + * This module support maximum 2 pairs of tx/rx isochronous streams for + * our convinience. + * + * In documents for ASICs called with a name of 'DICE': + * - ASIC for DICE II: + * - Maximum 2 tx and 4 rx are supported. + * - A packet supports maximum 16 data channels. + * - TCD2210/2210-E (so-called 'Dice Mini'): + * - Maximum 2 tx and 2 rx are supported. + * - A packet supports maximum 16 data channels. + * - TCD2220/2220-E (so-called 'Dice Jr.') + * - 2 tx and 2 rx are supported. + * - A packet supports maximum 16 data channels. + * - TCD3070-CH (so-called 'Dice III') + * - Maximum 2 tx and 2 rx are supported. + * - A packet supports maximum 32 data channels. + * + * For the above, MIDI conformant data channel is just on the first isochronous + * stream. + */ +#define MAX_STREAMS 2 + struct snd_dice { struct snd_card *card; struct fw_unit *unit; @@ -67,10 +90,10 @@ struct snd_dice { wait_queue_head_t hwdep_wait; /* For streaming */ - struct fw_iso_resources tx_resources; - struct fw_iso_resources rx_resources; - struct amdtp_stream tx_stream; - struct amdtp_stream rx_stream; + struct fw_iso_resources tx_resources[MAX_STREAMS]; + struct fw_iso_resources rx_resources[MAX_STREAMS]; + struct amdtp_stream tx_stream[MAX_STREAMS]; + struct amdtp_stream rx_stream[MAX_STREAMS]; bool global_enabled; struct completion clock_accepted; unsigned int substreams_counter; |