Commit 76cde263 authored by Hector Martin's avatar Hector Martin
Browse files

irqchip/apple-aic: Add support for the Apple Interrupt Controller 



This is the root interrupt controller used on Apple ARM SoCs such as the
M1. This irqchip driver performs multiple functions:

* Handles both IRQs and FIQs

* Drives the AIC peripheral itself (which handles IRQs)

* Dispatches FIQs to downstream hard-wired clients (currently the ARM
  timer).

* Implements a virtual IPI multiplexer to funnel multiple Linux IPIs
  into a single hardware IPI

Reviewed-by: default avatarMarc Zyngier <maz@kernel.org>
Acked-by: default avatarWill Deacon <will@kernel.org>
Signed-off-by: default avatarHector Martin <marcan@marcan.st>
parent f531d25b

MAINTAINERS

+2 −0
Original line number Diff line number Diff line
@@ -1647,6 +1647,8 @@ C: irc://chat.freenode.net/asahi-dev 
T:	git https://github.com/AsahiLinux/linux.git

F:	Documentation/devicetree/bindings/arm/apple.yaml

F:	Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml

F:	drivers/irqchip/irq-apple-aic.c

F:	include/dt-bindings/interrupt-controller/apple-aic.h









ARM/ARTPEC MACHINE SUPPORT









M:	Jesper Nilsson <jesper.nilsson@axis.com>


































drivers/irqchip/Kconfig



+8
−0






























Original line number
Diff line number
Diff line







@@ -577,4 +577,12 @@ config MST_IRQ







	help









	  Support MStar Interrupt Controller.



















config APPLE_AIC









	bool "Apple Interrupt Controller (AIC)"









	depends on ARM64









	default ARCH_APPLE









	help









	  Support for the Apple Interrupt Controller found on Apple Silicon SoCs,









	  such as the M1.



















endmenu
























drivers/irqchip/Makefile



+1
−0






























Original line number
Diff line number
Diff line







@@ -113,3 +113,4 @@ obj-$(CONFIG_LOONGSON_PCH_MSI)		+= irq-loongson-pch-msi.o







obj-$(CONFIG_MST_IRQ)			+= irq-mst-intc.o









obj-$(CONFIG_SL28CPLD_INTC)		+= irq-sl28cpld.o









obj-$(CONFIG_MACH_REALTEK_RTL)		+= irq-realtek-rtl.o









obj-$(CONFIG_APPLE_AIC)			+= irq-apple-aic.o
























drivers/irqchip/irq-apple-aic.c
0 → 100644



+852
−0




























File added.
Preview size limit exceeded, changes collapsed.
























include/linux/cpuhotplug.h



+1
−0




























File changed.
Preview size limit exceeded, changes collapsed.