summaryrefslogtreecommitdiff
path: root/sound/firewire/amdtp-stream.c
diff options
context:
space:
mode:
authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2019-08-04 09:21:20 +0300
committerTakashi Iwai <tiwai@suse.de>2019-08-05 20:57:16 +0300
commit3ec3d7a3ff10692d4f8a2baa0ff18fe10a9b6ad4 (patch)
tree04f14c26c7c4bdeb71fe7d5855d006ce3f66a4f7 /sound/firewire/amdtp-stream.c
parentb6fcab14ff027c4d54505d9cdff41535c3daf077 (diff)
downloadlinux-3ec3d7a3ff10692d4f8a2baa0ff18fe10a9b6ad4.tar.xz
ALSA: firewire-lib: add AMDTP domain structure to handle several isoc contexts
This commit adds 'struct amdtp_domain' structure. This structure has list of instance of AMDTP stream to handle a couple of isochronous contexts. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/amdtp-stream.c')
-rw-r--r--sound/firewire/amdtp-stream.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c
index 369e75e33120..02077696fa77 100644
--- a/sound/firewire/amdtp-stream.c
+++ b/sound/firewire/amdtp-stream.c
@@ -1136,3 +1136,25 @@ void amdtp_stream_pcm_abort(struct amdtp_stream *s)
snd_pcm_stop_xrun(pcm);
}
EXPORT_SYMBOL(amdtp_stream_pcm_abort);
+
+/**
+ * amdtp_domain_init - initialize an AMDTP domain structure
+ * @d: the AMDTP domain to initialize.
+ */
+int amdtp_domain_init(struct amdtp_domain *d)
+{
+ INIT_LIST_HEAD(&d->streams);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(amdtp_domain_init);
+
+/**
+ * amdtp_domain_destroy - destroy an AMDTP domain structure
+ * @d: the AMDTP domain to destroy.
+ */
+void amdtp_domain_destroy(struct amdtp_domain *d)
+{
+ WARN_ON(!list_empty(&d->streams));
+}
+EXPORT_SYMBOL_GPL(amdtp_domain_destroy);