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ALSA: firewire-motu: add hwdep interface

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This commit adds hwdep interface so as the other sound drivers for units
on IEEE 1394 bus have.

This interface is designed for mixer/control applications. By using this
interface, an application can get information about firewire node, can
lock/unlock kernel streaming and can get notification at starting/stopping
kernel streaming.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto
2017-03-22 21:30:24 +09:00
committed by Takashi Iwai
parent 9e796e7d59
commit 71c3797779
9 changed files with 285 additions and 7 deletions
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3
include/uapi/sound/firewire.h
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@@ -65,7 +65,8 @@ union snd_firewire_event {
#define SNDRV_FIREWIRE_TYPE_OXFW 4
#define SNDRV_FIREWIRE_TYPE_DIGI00X 5
#define SNDRV_FIREWIRE_TYPE_TASCAM 6
/* RME, MOTU, ... */
#define SNDRV_FIREWIRE_TYPE_MOTU 7
/* RME... */
struct snd_firewire_get_info {
unsigned int type; /* SNDRV_FIREWIRE_TYPE_xxx */