ALSA: firewire-lib: Add 'direction' member to 'cmp_connection' structure
This patch adds 'direction' member to 'cmp_connection' structure to indicate
the direction of connection. This patch also adds 'direction' argument to
cmp_connection_init() function to determine the direction.
The cmp_connection_init() function is exported and used in snd-firewire-speakers
so this patch also affect it.
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/cmp.c b/sound/firewire/cmp.c
index deb494d..c7f7a31 100644
--- a/sound/firewire/cmp.c
+++ b/sound/firewire/cmp.c
@@ -94,6 +94,7 @@
*/
int cmp_connection_init(struct cmp_connection *c,
struct fw_unit *unit,
+ enum cmp_direction direction,
unsigned int pcr_index)
{
__be32 mpr_be;
diff --git a/sound/firewire/cmp.h b/sound/firewire/cmp.h
index 2320cd4..9b58448 100644
--- a/sound/firewire/cmp.h
+++ b/sound/firewire/cmp.h
@@ -7,6 +7,11 @@
struct fw_unit;
+enum cmp_direction {
+ CMP_INPUT = 0,
+ CMP_OUTPUT,
+};
+
/**
* struct cmp_connection - manages an isochronous connection to a device
* @speed: the connection's actual speed
@@ -26,10 +31,12 @@
__be32 last_pcr_value;
unsigned int pcr_index;
unsigned int max_speed;
+ enum cmp_direction direction;
};
int cmp_connection_init(struct cmp_connection *connection,
struct fw_unit *unit,
+ enum cmp_direction direction,
unsigned int pcr_index);
void cmp_connection_destroy(struct cmp_connection *connection);
diff --git a/sound/firewire/speakers.c b/sound/firewire/speakers.c
index 58e7ab0..dd9983b 100644
--- a/sound/firewire/speakers.c
+++ b/sound/firewire/speakers.c
@@ -673,7 +673,7 @@
fwspk->unit = fw_unit_get(unit);
fwspk->device_info = (const struct device_info *)id->driver_data;
- err = cmp_connection_init(&fwspk->connection, unit, 0);
+ err = cmp_connection_init(&fwspk->connection, unit, CMP_INPUT, 0);
if (err < 0)
goto err_unit;