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

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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: Marc Zyngier <maz@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

...

This commit is contained in:

Hector Martin 2021-01-21 08:55:15 +09:00

parent f531d25bda

commit 76cde26394

5 changed files with 864 additions and 0 deletions

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2

MAINTAINERS

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drivers/irqchip/Kconfig

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drivers/irqchip/Makefile

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852

drivers/irqchip/irq-apple-aic.c

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include/linux/cpuhotplug.h

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