1 #ifndef SOUND_FIREWIRE_CMP_H_INCLUDED
2 #define SOUND_FIREWIRE_CMP_H_INCLUDED
4 #include <linux/mutex.h>
5 #include <linux/types.h>
6 #include "iso-resources.h"
16 * struct cmp_connection - manages an isochronous connection to a device
17 * @speed: the connection's actual speed
19 * This structure manages (using CMP) an isochronous stream between the local
20 * computer and a device's input plug (iPCR) and output plug (oPCR).
22 * There is no corresponding oPCR created on the local computer, so it is not
23 * possible to overlay connections on top of this one.
25 struct cmp_connection {
30 struct fw_iso_resources resources;
31 __be32 last_pcr_value;
32 unsigned int pcr_index;
33 unsigned int max_speed;
34 enum cmp_direction direction;
37 int cmp_connection_init(struct cmp_connection *connection,
39 enum cmp_direction direction,
40 unsigned int pcr_index);
41 int cmp_connection_check_used(struct cmp_connection *connection, bool *used);
42 void cmp_connection_destroy(struct cmp_connection *connection);
44 int cmp_connection_establish(struct cmp_connection *connection,
45 unsigned int max_payload);
46 int cmp_connection_update(struct cmp_connection *connection);
47 void cmp_connection_break(struct cmp_connection *connection);