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.c b/sound/firewire/amdtp.c
index 38013f9..95c5a15 100644 (file)
--- a/sound/firewire/amdtp.c
+++ b/sound/firewire/amdtp.c
@@ -53,12 +53,14 @@ static void pcm_period_tasklet(unsigned long data);
  * amdtp_stream_init - initialize an AMDTP stream structure
  * @s: the AMDTP stream to initialize
  * @unit: the target of the stream
+ * @dir: the direction of stream
  * @flags: the packet transmission method to use
  */
 int amdtp_stream_init(struct amdtp_stream *s, struct fw_unit *unit,
-                     enum cip_flags flags)
+                     enum amdtp_stream_direction dir, enum cip_flags flags)
 {
        s->unit = fw_unit_get(unit);
+       s->direction = dir;
        s->flags = flags;
        s->context = ERR_PTR(-1);
        mutex_init(&s->mutex);

diff --git a/sound/firewire/amdtp.h b/sound/firewire/amdtp.h
index 60028c7..019134e 100644 (file)
--- a/sound/firewire/amdtp.h
+++ b/sound/firewire/amdtp.h
@@ -48,9 +48,15 @@ struct fw_unit;
 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 @@ struct amdtp_stream {
 };
 
 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);
 

diff --git a/sound/firewire/dice.c b/sound/firewire/dice.c
index ca12fcb..26b2158 100644 (file)
--- a/sound/firewire/dice.c
+++ b/sound/firewire/dice.c
@@ -1360,7 +1360,7 @@ static int dice_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
                goto err_owner;
        dice->resources.channels_mask = 0x00000000ffffffffuLL;
 
-       err = amdtp_stream_init(&dice->stream, unit,
+       err = amdtp_stream_init(&dice->stream, unit, AMDTP_OUT_STREAM,
                                CIP_BLOCKING | CIP_HI_DUALWIRE);
        if (err < 0)
                goto err_resources;

diff --git a/sound/firewire/speakers.c b/sound/firewire/speakers.c
index 2096ad7..c07e7cd 100644 (file)
--- a/sound/firewire/speakers.c
+++ b/sound/firewire/speakers.c
@@ -683,7 +683,8 @@ static int fwspk_probe(struct fw_unit *unit,
        if (err < 0)
                goto err_unit;
 
-       err = amdtp_stream_init(&fwspk->stream, unit, CIP_NONBLOCKING);
+       err = amdtp_stream_init(&fwspk->stream, unit, AMDTP_OUT_STREAM,
+                               CIP_NONBLOCKING);
        if (err < 0)
                goto err_connection;