ALSA: fireworks: Add hwdep interface
This interface is designed for mixer/control application. To use hwdep
interface, the 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>
diff --git a/sound/firewire/fireworks/fireworks.c b/sound/firewire/fireworks/fireworks.c
index d7877c7..f8d06f5 100644
--- a/sound/firewire/fireworks/fireworks.c
+++ b/sound/firewire/fireworks/fireworks.c
@@ -217,6 +217,7 @@
efw->unit = unit;
mutex_init(&efw->mutex);
spin_lock_init(&efw->lock);
+ init_waitqueue_head(&efw->hwdep_wait);
err = get_hardware_info(efw);
if (err < 0)
@@ -236,6 +237,10 @@
if (err < 0)
goto error;
+ err = snd_efw_create_hwdep_device(efw);
+ if (err < 0)
+ goto error;
+
err = snd_efw_stream_init_duplex(efw);
if (err < 0)
goto error;