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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2014-12-08 18:10:49 +0300
committerTakashi Iwai <tiwai@suse.de>2014-12-10 12:50:00 +0300
commit8985f4ac1c42bd25799f294f4e87fa73064673c7 (patch)
tree04f57545162b29abfc8a6b0c2d2833721b4bcc78 /sound/firewire/oxfw/oxfw.c
parent05588d340a128ff5c7b768c517150e31842a78aa (diff)
downloadlinux-8985f4ac1c42bd25799f294f4e87fa73064673c7.tar.xz
ALSA: oxfw: Add hwdep interface
This interface is designed for mixer/control application. 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> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/oxfw/oxfw.c')
-rw-r--r--sound/firewire/oxfw/oxfw.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c
index 9cfbfb168dac..cf1d0b55e827 100644
--- a/sound/firewire/oxfw/oxfw.c
+++ b/sound/firewire/oxfw/oxfw.c
@@ -139,6 +139,7 @@ static int oxfw_probe(struct fw_unit *unit,
oxfw->unit = unit;
oxfw->device_info = (const struct device_info *)id->driver_data;
spin_lock_init(&oxfw->lock);
+ init_waitqueue_head(&oxfw->hwdep_wait);
err = snd_oxfw_stream_discover(oxfw);
if (err < 0)
@@ -164,6 +165,10 @@ static int oxfw_probe(struct fw_unit *unit,
if (err < 0)
goto error;
+ err = snd_oxfw_create_hwdep(oxfw);
+ if (err < 0)
+ goto error;
+
err = snd_oxfw_stream_init_simplex(oxfw, &oxfw->rx_stream);
if (err < 0)
goto error;