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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2023-01-12 21:09:52 +0900 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-01-13 09:56:37 +0100 |
| commit | ab811cfffa949946ebcfd6e280d4dc37c7f0f602 (patch) | |
| tree | cd2c1c366a0aad11ea34d6c8c3d7ececc17af732 | |
| parent | aed713bfaec489e6f29c05ece1367336368aee8d (diff) | |
| download | linux-ab811cfffa949946ebcfd6e280d4dc37c7f0f602.tar.gz linux-ab811cfffa949946ebcfd6e280d4dc37c7f0f602.tar.bz2 linux-ab811cfffa949946ebcfd6e280d4dc37c7f0f602.zip | |
ALSA: fireface: update UAPI for data of knob control
This commit adds a new event of knob control specific to RME Fireface 400.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20230112120954.500692-5-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | include/uapi/sound/firewire.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/uapi/sound/firewire.h b/include/uapi/sound/firewire.h index 3532ac7046d7..50917581dd2b 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 +73,28 @@ 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. + * @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; + 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 +104,7 @@ 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; }; |