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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2019-08-04 09:21:22 +0300
committerTakashi Iwai <tiwai@suse.de>2019-08-05 20:57:18 +0300
commit157a53eef6a016e6938d9fd266b85221fcd4eaa3 (patch)
tree646ddf6b611456054c9442bc4176194e340e85d6 /sound/firewire
parent6261f90bdb0b605ffb158717ec7a03b1753aded5 (diff)
downloadlinux-157a53eef6a016e6938d9fd266b85221fcd4eaa3.tar.xz
ALSA: firewire-lib: add a kernel API to add AMDTP stream into AMDTP domain
This commit adds a kernel API to insert AMDTP stream to list in AMDTP domain. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire')
-rw-r--r--sound/firewire/amdtp-stream.c26
-rw-r--r--sound/firewire/amdtp-stream.h5
2 files changed, 31 insertions, 0 deletions
diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c
index 31fc90f76443..fa7989ee4769 100644
--- a/sound/firewire/amdtp-stream.c
+++ b/sound/firewire/amdtp-stream.c
@@ -1160,6 +1160,32 @@ void amdtp_domain_destroy(struct amdtp_domain *d)
EXPORT_SYMBOL_GPL(amdtp_domain_destroy);
/**
+ * amdtp_domain_add_stream - register isoc context into the domain.
+ * @d: the AMDTP domain.
+ * @s: the AMDTP stream.
+ * @channel: the isochronous channel on the bus.
+ * @speed: firewire speed code.
+ */
+int amdtp_domain_add_stream(struct amdtp_domain *d, struct amdtp_stream *s,
+ int channel, int speed)
+{
+ struct amdtp_stream *tmp;
+
+ list_for_each_entry(tmp, &d->streams, list) {
+ if (s == tmp)
+ return -EBUSY;
+ }
+
+ list_add(&s->list, &d->streams);
+
+ s->channel = channel;
+ s->speed = speed;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(amdtp_domain_add_stream);
+
+/**
* amdtp_domain_stop - stop sending packets for isoc context in the same domain.
* @d: the AMDTP domain to which the isoc contexts belong.
*/
diff --git a/sound/firewire/amdtp-stream.h b/sound/firewire/amdtp-stream.h
index ab2a69180240..4b102fd7529d 100644
--- a/sound/firewire/amdtp-stream.h
+++ b/sound/firewire/amdtp-stream.h
@@ -172,6 +172,8 @@ struct amdtp_stream {
amdtp_stream_process_ctx_payloads_t process_ctx_payloads;
// For domain.
+ int channel;
+ int speed;
struct list_head list;
};
@@ -277,6 +279,9 @@ struct amdtp_domain {
int amdtp_domain_init(struct amdtp_domain *d);
void amdtp_domain_destroy(struct amdtp_domain *d);
+int amdtp_domain_add_stream(struct amdtp_domain *d, struct amdtp_stream *s,
+ int channel, int speed);
+
void amdtp_domain_stop(struct amdtp_domain *d);
#endif