WIP: multi-slot WOV arbiter with VAD gate and D0I3/S0iX support

app/boards/intel_adsp_cavs25.conf

@@ -11,6 +11,11 @@ CONFIG_COMP_DRC=y
 CONFIG_COMP_MFCC=y
 CONFIG_COMP_MULTIBAND_DRC=y
 CONFIG_COMP_VOLUME_WINDOWS_FADE=y
+CONFIG_COMP_WOV_ARBITER=y
+CONFIG_COMP_VAD_GATE=y
+CONFIG_COMP_KPB=y
+CONFIG_SAMPLES=y
+CONFIG_SAMPLE_KEYPHRASE=y
 CONFIG_FORMAT_CONVERT_HIFI3=n
 CONFIG_PCM_CONVERTER_FORMAT_S16LE=y
 CONFIG_PCM_CONVERTER_FORMAT_S24LE=y

src/audio/CMakeLists.txt

@@ -104,9 +104,15 @@ if(NOT CONFIG_COMP_MODULE_SHARED_LIBRARY_BUILD)
 	if(CONFIG_COMP_UP_DOWN_MIXER)
 		add_subdirectory(up_down_mixer)
 	endif()
+	if(CONFIG_COMP_VAD_GATE)
+		add_subdirectory(vad_gate)
+	endif()
 	if(CONFIG_COMP_VOLUME)
 		add_subdirectory(volume)
 	endif()
+	if(CONFIG_COMP_WOV_ARBITER)
+		add_subdirectory(wov_arbiter)
+	endif()
 	if(CONFIG_DTS_CODEC)
 		add_subdirectory(codec)
 	endif()

src/audio/Kconfig

@@ -102,13 +102,38 @@ config COMP_STUBS
 	  Select to force all 3P blocks to link against stubs rather than their libraries. This
 	  should only be used in testing environments like fuzzers or CI.
 
+config COMP_WOV_ARBITER
+	bool "WOV arbiter component"
+	depends on COMP_KPB
+	depends on IPC_MAJOR_4
+	help
+	  Select to build the WOV (Wake-on-Voice) arbiter.  The arbiter sits
+	  between multiple KPB host-drain outputs and a single host PCM copier.
+	  When a keyword is detected by one of the WOV detectors the arbiter
+	  routes that KPB's drain stream to the host and instructs the remaining
+	  detectors to pause.
+
 config COMP_KPB
 	bool "KPB component"
 	default y
 	help
 	  Select for KPB component
 if COMP_KPB
 
+config KPB_MAX_NO_OF_CLIENTS
+	int "Maximum number of KPB clients"
+	default 4
+	help
+	  Maximum number of simultaneous KPB drain clients (host + WOV detectors).
+	  Increase if more than 4 clients need concurrent KPB access.
+
+config KPB_MAX_BUFF_TIME
+	int "KPB history buffer time (ms)"
+	default 6000 if XCHAL_HW_VERSION_MAJOR >= 300
+	default 2100
+	help
+	  KPB history ring-buffer length in milliseconds.
+
 config KPB_FORCE_COPY_TYPE_NORMAL
 	bool "KPB force copy type normal"
 	default y
@@ -160,6 +185,7 @@ rsource "template/Kconfig"
 rsource "tensorflow/Kconfig"
 rsource "tone/Kconfig"
 rsource "up_down_mixer/Kconfig"
+rsource "vad_gate/Kconfig"
 rsource "volume/Kconfig"
 # --- End Kconfig Sources (alphabetical order) ---