ALSA: firewire-lib: Add 'direction' member to 'amdtp_stream' structure
This patch adds 'direction' member to amdtp_stream structure to indicate its
direction. This patch also adds 'direction' argument to amdtp_stream_init()
function to determine its direction.
The amdtp_stream_init() function is exported and used by firewire-speakers and
dice so this patch also affects them.
This patch just add them. Actual implementation will be done by followed
patches.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/firewire/amdtp.h b/sound/firewire/amdtp.h
index 60028c7..019134e 100644
--- a/sound/firewire/amdtp.h
+++ b/sound/firewire/amdtp.h
@@ -48,9 +48,15 @@
struct fw_iso_context;
struct snd_pcm_substream;
+enum amdtp_stream_direction {
+ AMDTP_OUT_STREAM = 0,
+ AMDTP_IN_STREAM
+};
+
struct amdtp_stream {
struct fw_unit *unit;
enum cip_flags flags;
+ enum amdtp_stream_direction direction;
struct fw_iso_context *context;
struct mutex mutex;
@@ -85,6 +91,7 @@
};
int amdtp_stream_init(struct amdtp_stream *s, struct fw_unit *unit,
+ enum amdtp_stream_direction dir,
enum cip_flags flags);
void amdtp_stream_destroy(struct amdtp_stream *s);