Managing the Components

The components management functionality is declared in audio/component.h and implemented in audio/component.c.

It provides APIs for component drivers and component clients.

package component-mgmt { class "component API" <<unit>> { comp_new(sof_ipc_comp*) comp_register(comp_driver*) comp_unregister(comp_driver*) comp_set_state(comp_dev*, cmd) ... sys_comp_init(void) } class comp_data { list } hide comp_data methods "component API" -right-> comp_data : drv_get() } note right of comp_data Singleton allocated in RZONE_SYS by sys_comp_init() end note "component API" <-up- comp_driver : registers in comp_register() comp_driver -o comp_data hide comp_driver members hide comp_driver methods

Figure 59 Component Management API

Initialization

Audio unit initialization routine calls sys_comp_init() to perform allocation of the comp_data which maintains the list of registered component drivers.