From 8cb17b5ed0177d1b613aadd53c7e570b81625728 Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Mon, 25 Apr 2016 04:00:38 +0300 Subject: irqchip: Add LPC32xx interrupt controller driver The change adds improved support of NXP LPC32xx MIC, SIC1 and SIC2 interrupt controllers. This is a list of new features in comparison to the legacy driver: * irq types are taken from device tree settings, no more need to hardcode them, * old driver is based on irq_domain_add_legacy, which causes problems with handling MIC hardware interrupt 0 produced by SIC1, * there is one driver for MIC, SIC1 and SIC2, no more need to handle them separately, e.g. have two separate handlers for SIC1 and SIC2, * the driver does not have any dependencies on hardcoded register offsets, * the driver is much simpler for maintenance, * SPARSE_IRQS option is supported. Legacy LPC32xx interrupt controller driver was broken since commit 76ba59f8366f ("genirq: Add irq_domain-aware core IRQ handler"), which requires a private interrupt handler, otherwise any SIC1 generated interrupt (mapped to MIC hwirq 0) breaks the kernel with the message "unexpected IRQ trap at vector 00". The change disables compilation of a legacy driver found at arch/arm/mach-lpc32xx/irq.c, the file will be removed in a separate commit. Fixes: 76ba59f8366f ("genirq: Add irq_domain-aware core IRQ handler") Tested-by: Sylvain Lemieux Signed-off-by: Vladimir Zapolskiy Signed-off-by: Marc Zyngier --- drivers/irqchip/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/irqchip/Makefile') diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile index 8cedf9060565..f828244b44c2 100644 --- a/drivers/irqchip/Makefile +++ b/drivers/irqchip/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2835.o obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2836.o obj-$(CONFIG_ARCH_EXYNOS) += exynos-combiner.o obj-$(CONFIG_ARCH_HIP04) += irq-hip04.o +obj-$(CONFIG_ARCH_LPC32XX) += irq-lpc32xx.o obj-$(CONFIG_ARCH_MMP) += irq-mmp.o obj-$(CONFIG_IRQ_MXS) += irq-mxs.o obj-$(CONFIG_ARCH_TEGRA) += irq-tegra.o -- cgit v1.2.3-59-g8ed1b