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| author |   Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2018-11-23 13:13:07 +0900 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2018-11-23 15:31:15 +0100 |
| commit | a8c0d13267a4151b2ff124cde6331ec28ed0d55e (patch) | |
| tree | fa16772e9c438408d90c4239b7cfe3be4cc67c04 /include/uapi/sound/firewire.h | |
| parent | ALSA: firewire-tascam: apply small refactoring to handle several type of event for hwdep interface (diff) | |
| download | linux-dev-a8c0d13267a4151b2ff124cde6331ec28ed0d55e.tar.xz linux-dev-a8c0d13267a4151b2ff124cde6331ec28ed0d55e.zip | |
ALSA: firewire-tascam: notify events of change of state for userspace applications
In former commits, ALSA firewire-tascam driver queues events to notify
change of state of control surface to userspace via ALSA hwdep
interface.
This commit implements actual notification of the events. The events are
not governed by real time, thus no need to care underrun.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/uapi/sound/firewire.h')
| -rw-r--r-- | include/uapi/sound/firewire.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/uapi/sound/firewire.h b/include/uapi/sound/firewire.h index bb067efb09c6..ae12826ed641 100644 --- a/include/uapi/sound/firewire.h +++ b/include/uapi/sound/firewire.h @@ -12,6 +12,7 @@ #define SNDRV_FIREWIRE_EVENT_EFW_RESPONSE 0x4e617475 #define SNDRV_FIREWIRE_EVENT_DIGI00X_MESSAGE 0x746e736c #define SNDRV_FIREWIRE_EVENT_MOTU_NOTIFICATION 0x64776479 +#define SNDRV_FIREWIRE_EVENT_TASCAM_CONTROL 0x7473636d struct snd_firewire_event_common { unsigned int type; /* SNDRV_FIREWIRE_EVENT_xxx */ @@ -59,12 +60,18 @@ struct snd_firewire_tascam_change { __be32 after; }; +struct snd_firewire_event_tascam_control { + unsigned int type; + struct snd_firewire_tascam_change changes[0]; +}; + union snd_firewire_event { struct snd_firewire_event_common common; struct snd_firewire_event_lock_status lock_status; struct snd_firewire_event_dice_notification dice_notification; struct snd_firewire_event_efw_response efw_response; struct snd_firewire_event_digi00x_message digi00x_message; + struct snd_firewire_event_tascam_control tascam_control; struct snd_firewire_event_motu_notification motu_notification; }; |