diff options
| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2017-03-31 22:06:11 +0900 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2017-04-05 21:31:49 +0200 |
| commit | f656edd5fb33d889561978b81ec2897087c2f4ca (patch) | |
| tree | 5c023947956c83b1f27326f89a4039b7e24388e7 /sound/firewire/fireface/ff.c | |
| parent | 4b316436ab2e0b74e4986fc66b7cd7902cfd7054 (diff) | |
ALSA: fireface: add hwdep interface
This commit adds hwdep interface so as the other drivers for audio and
music units on IEEE 1394 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>
Diffstat (limited to 'sound/firewire/fireface/ff.c')
| -rw-r--r-- | sound/firewire/fireface/ff.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/firewire/fireface/ff.c b/sound/firewire/fireface/ff.c index ff62d16fec0f..f57b434144dc 100644 --- a/sound/firewire/fireface/ff.c +++ b/sound/firewire/fireface/ff.c @@ -76,6 +76,10 @@ static void do_registration(struct work_struct *work) if (err < 0) goto error; + err = snd_ff_create_hwdep_devices(ff); + if (err < 0) + goto error; + err = snd_card_register(ff->card); if (err < 0) goto error; @@ -108,6 +112,7 @@ static int snd_ff_probe(struct fw_unit *unit, mutex_init(&ff->mutex); spin_lock_init(&ff->lock); + init_waitqueue_head(&ff->hwdep_wait); ff->spec = (const struct snd_ff_spec *)entry->driver_data; |