ASoC: apple: Add aop_audio driver.

WhatAmISupposedToPutHere · jannau · commit 7dfa11c2e33b · 2025-04-11T13:41:15.000+02:00
Apple SoCs have their microphones connected to the AOP
co-processor, in order to among other things implement
the "voicetrigger" functionality. Add a driver for the
"High power audio input" AOP endpoint.

Signed-off-by: Sasha Finkelstein &lt;fnkl.kernel@gmail.com&gt;
diff --git a/sound/soc/apple/Kconfig b/sound/soc/apple/Kconfig
@@ -1,3 +1,15 @@
+config SND_SOC_APPLE_AOP_AUDIO
+	tristate "AOP audio driver"
+	depends on ARCH_APPLE || COMPILE_TEST
+	depends on RUST
+	select APPLE_AOP
+	select SND_DMAENGINE_PCM
+	default m if ARCH_APPLE
+	help
+	  This option enables an ASoC driver for sound devices connected to the AOP
+	  co-processor on ARM Macs. This includes the built-in microphone on those
+	  machines.
+
 config SND_SOC_APPLE_MCA
 	tristate "Apple Silicon MCA driver"
 	depends on ARCH_APPLE || COMPILE_TEST
diff --git a/sound/soc/apple/Makefile b/sound/soc/apple/Makefile
@@ -1,3 +1,6 @@
+snd-soc-aop-y		:= aop_audio.o
+obj-$(CONFIG_SND_SOC_APPLE_AOP_AUDIO)	+= snd-soc-aop.o
+
 snd-soc-apple-mca-y	:= mca.o
 
 obj-$(CONFIG_SND_SOC_APPLE_MCA)	+= snd-soc-apple-mca.o
diff --git a/sound/soc/apple/aop_audio.rs b/sound/soc/apple/aop_audio.rs
