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 --- sound/firewire/amdtp-stream.c | 22 ++++++++++++++++++++++ sound/firewire/amdtp-stream.h | 7 +++++++ 2 files changed, 29 insertions(+)
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); diff --git a/sound/firewire/amdtp-stream.h b/sound/firewire/amdtp-stream.h index 50041fa884d9..2378db4b4195 100644 --- a/sound/firewire/amdtp-stream.h +++ b/sound/firewire/amdtp-stream.h @@ -267,4 +267,11 @@ static inline bool amdtp_stream_wait_callback(struct amdtp_stream *s, msecs_to_jiffies(timeout)) > 0; }
+struct amdtp_domain { + struct list_head streams; +}; + +int amdtp_domain_init(struct amdtp_domain *d); +void amdtp_domain_destroy(struct amdtp_domain *d); + #endif