diff options
Diffstat (limited to 'sound/firewire/cmp.h')
| -rw-r--r-- | sound/firewire/cmp.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sound/firewire/cmp.h b/sound/firewire/cmp.h index f47de08feb12..ebcb48484fca 100644 --- a/sound/firewire/cmp.h +++ b/sound/firewire/cmp.h @@ -7,12 +7,17 @@ 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 * - * This structure manages (using CMP) an isochronous stream from the local - * computer to a device's input plug (iPCR). + * This structure manages (using CMP) an isochronous stream between the local + * computer and a device's input plug (iPCR) and output plug (oPCR). * * There is no corresponding oPCR created on the local computer, so it is not * possible to overlay connections on top of this one. @@ -26,11 +31,14 @@ struct cmp_connection { __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, - unsigned int ipcr_index); + enum cmp_direction direction, + unsigned int pcr_index); +int cmp_connection_check_used(struct cmp_connection *connection, bool *used); void cmp_connection_destroy(struct cmp_connection *connection); int cmp_connection_establish(struct cmp_connection *connection, |