rtkit WIP

drivers/soc/Kconfig

@@ -3,6 +3,7 @@ menu "SOC (System On Chip) specific Drivers"
 
 source "drivers/soc/actions/Kconfig"
 source "drivers/soc/amlogic/Kconfig"
+source "drivers/soc/apple/Kconfig"
 source "drivers/soc/aspeed/Kconfig"
 source "drivers/soc/atmel/Kconfig"
 source "drivers/soc/bcm/Kconfig"

drivers/soc/Makefile

@@ -4,6 +4,7 @@
 #
 
 obj-$(CONFIG_ARCH_ACTIONS)	+= actions/
+obj-$(CONFIG_ARCH_APPLE)	+= apple/
 obj-y				+= aspeed/
 obj-$(CONFIG_ARCH_AT91)		+= atmel/
 obj-y				+= bcm/

drivers/soc/apple/Kconfig

@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0-only
+if ARCH_APPLE || COMPILE_TEST
+
+config APPLE_RTKIT
+	bool "Apple RTKit co-processor IPC protocol"
+	depends on ARCH_APPLE || COMPILE_TEST
+	default ARCH_APPLE
+	help
+	  Apple SoCs such as the M1 come with various co-processors running
+	  their proprietary RTKit operating system. This option enables support
+	  for the common IPC protocl used by these.
+
+	  Say 'y' here if you have an Apple SoC.
+
+endif

drivers/soc/apple/Makefile

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+obj-$(CONFIG_APPLE_RTKIT) += apple-rtkit.o