Commit ab811cff authored by Takashi Sakamoto's avatar Takashi Sakamoto Committed by Takashi Iwai
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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: default avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20230112120954.500692-5-o-takashi@sakamocchi.jp


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent aed713bf

include/uapi/sound/firewire.h

+24 −0
Original line number Diff line number Diff line
@@ -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;

};