alh.h File Reference

IPC4 Audio Hub Link (ALH) and SoundWire multi-gateway definitions. More...

Include dependency graph for alh.h:

Go to the source code of this file.

Data Structures
struct	ipc4_alh_multi_gtw_cfg
	Multi-gateway channel aggregation configuration. More...
struct	sof_alh_configuration_blob
	Full configuration blob for Audio Hub Link (ALH) gateways. More...

Macros
#define	IPC4_ALH_MAX_NUMBER_OF_GTW   16
	Maximum number of single ALH channels supported in multi-gateway aggregation.
#define	IPC4_ALH_DAI_INDEX_OFFSET   0
	DAI index offset for non-GPDMA platforms.
#define	IPC4_DAI_NUM_ALH_BI_DIR_LINKS   0
	Number of bidirectional ALH links on non-CAVS platforms.
#define	IPC4_DAI_NUM_ALH_BI_DIR_LINKS_GROUP   0
	Number of bidirectional ALH link groups on non-CAVS platforms.
#define	IPC4_ALH_DAI_INDEX(x)
	Compute ALH DAI index from group and codec identifiers.
#define	IPC4_ALH_MULTI_GTW_BASE   0x50
	Base virtual index marking the beginning of aggregated multi-gateway addressing.

Functions
static bool	is_multi_gateway (const union ipc4_connector_node_id node_id)
	Check if an IPC4 connector node ID corresponds to an aggregated multi-gateway.
static size_t	get_alh_config_size (const struct sof_alh_configuration_blob *alh_blob)
	Calculate the serialized size of an ALH configuration blob.

Detailed Description

IPC4 Audio Hub Link (ALH) and SoundWire multi-gateway definitions.

NOTE: This ABI uses bit fields and is non portable.

Macro Definition Documentation

IPC4_ALH_DAI_INDEX

#define IPC4_ALH_DAI_INDEX

(

x

)

Value:

                ((((x) & 0xF0) << IPC4_DAI_NUM_ALH_BI_DIR_LINKS_GROUP) + \
                (((x) & 0xF) - IPC4_ALH_DAI_INDEX_OFFSET))

Compute ALH DAI index from group and codec identifiers.

copier id = (group id << 4) + codec id + IPC4_ALH_DAI_INDEX_OFFSET dai_index = (group id << 8) + codec id;

IPC4_ALH_DAI_INDEX_OFFSET

#define IPC4_ALH_DAI_INDEX_OFFSET   0

DAI index offset for non-GPDMA platforms.

IPC4_ALH_MAX_NUMBER_OF_GTW

#define IPC4_ALH_MAX_NUMBER_OF_GTW   16

Maximum number of single ALH channels supported in multi-gateway aggregation.

IPC4_ALH_MULTI_GTW_BASE

#define IPC4_ALH_MULTI_GTW_BASE   0x50

Base virtual index marking the beginning of aggregated multi-gateway addressing.

IPC4_DAI_NUM_ALH_BI_DIR_LINKS

#define IPC4_DAI_NUM_ALH_BI_DIR_LINKS   0

Number of bidirectional ALH links on non-CAVS platforms.

IPC4_DAI_NUM_ALH_BI_DIR_LINKS_GROUP

#define IPC4_DAI_NUM_ALH_BI_DIR_LINKS_GROUP   0

Number of bidirectional ALH link groups on non-CAVS platforms.