diff options
Diffstat (limited to 'include/uapi/sound/firewire.h')
| -rw-r--r-- | include/uapi/sound/firewire.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/uapi/sound/firewire.h b/include/uapi/sound/firewire.h index 3532ac7046d7..1e86872c151f 100644 --- a/include/uapi/sound/firewire.h +++ b/include/uapi/sound/firewire.h @@ -14,6 +14,7 @@ #define SNDRV_FIREWIRE_EVENT_MOTU_NOTIFICATION 0x64776479 #define SNDRV_FIREWIRE_EVENT_TASCAM_CONTROL 0x7473636d #define SNDRV_FIREWIRE_EVENT_MOTU_REGISTER_DSP_CHANGE 0x4d545244 +#define SNDRV_FIREWIRE_EVENT_FF400_MESSAGE 0x4f6c6761 struct snd_firewire_event_common { unsigned int type; /* SNDRV_FIREWIRE_EVENT_xxx */ @@ -72,6 +73,30 @@ struct snd_firewire_event_motu_register_dsp_change { __u32 changes[]; /* Encoded event for change of register DSP. */ }; +/** + * struct snd_firewire_event_ff400_message - the container for message from Fireface 400 when + * operating hardware knob. + * + * @type: Fixed to SNDRV_FIREWIRE_EVENT_FF400_MESSAGE. + * @message_count: The number of messages. + * @messages.message: The messages expressing hardware knob operation. + * @messages.tstamp: The isochronous cycle at which the request subaction of asynchronous + * transaction was sent to deliver the message. It has 16 bit unsigned integer + * value. The higher 3 bits of value expresses the lower three bits of second + * field in the format of CYCLE_TIME, up to 7. The rest 13 bits expresses cycle + * field up to 7999. + * + * The structure expresses message transmitted by Fireface 400 when operating hardware knob. + */ +struct snd_firewire_event_ff400_message { + unsigned int type; + unsigned int message_count; + struct { + __u32 message; + __u32 tstamp; + } messages[]; +}; + union snd_firewire_event { struct snd_firewire_event_common common; struct snd_firewire_event_lock_status lock_status; @@ -81,6 +106,7 @@ union snd_firewire_event { struct snd_firewire_event_tascam_control tascam_control; struct snd_firewire_event_motu_notification motu_notification; struct snd_firewire_event_motu_register_dsp_change motu_register_dsp_change; + struct snd_firewire_event_ff400_message ff400_message; }; |