ALSA: bebob: Add hwdep interface
This interface is designed for mixer/control application. By using 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/bebob/bebob.h b/sound/firewire/bebob/bebob.h
index b41bb91..e8a5e44 100644
--- a/sound/firewire/bebob/bebob.h
+++ b/sound/firewire/bebob/bebob.h
@@ -24,6 +24,8 @@
#include <sound/rawmidi.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
+#include <sound/firewire.h>
+#include <sound/hwdep.h>
#include "../lib.h"
#include "../fcp.h"
@@ -75,6 +77,11 @@
rx_stream_formations[SND_BEBOB_STRM_FMT_ENTRIES];
int sync_input_plug;
+
+ /* for uapi */
+ int dev_lock_count;
+ bool dev_lock_changed;
+ wait_queue_head_t hwdep_wait;
};
static inline int
@@ -175,12 +182,18 @@
void snd_bebob_stream_update_duplex(struct snd_bebob *bebob);
void snd_bebob_stream_destroy_duplex(struct snd_bebob *bebob);
+void snd_bebob_stream_lock_changed(struct snd_bebob *bebob);
+int snd_bebob_stream_lock_try(struct snd_bebob *bebob);
+void snd_bebob_stream_lock_release(struct snd_bebob *bebob);
+
void snd_bebob_proc_init(struct snd_bebob *bebob);
int snd_bebob_create_midi_devices(struct snd_bebob *bebob);
int snd_bebob_create_pcm_devices(struct snd_bebob *bebob);
+int snd_bebob_create_hwdep_device(struct snd_bebob *bebob);
+
#define SND_BEBOB_DEV_ENTRY(vendor, model) \
{ \
.match_flags = IEEE1394_MATCH_VENDOR_ID | \