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Commit 3d61467f authored by Boris Brezillon's avatar Boris Brezillon Committed by Jason Cooper
Browse files

irqchip: atmel-aic: Implement RTC irq fixup 



Provide an implementation to fix RTC irqs before enabling the irqchip.

This was previously done in arch/arm/mach-at91/sysirq_mask.c but as we're
trying to use standard implementation (IRQCHIP_DECLARE and automatic call
of irqchip_init within arch/arm/kernel/irq.c) we need to do those fixups
in the irqchip driver.

Signed-off-by: default avatarBoris BREZILLON <boris.brezillon@free-electrons.com>
Link: https://lkml.kernel.org/r/1405016741-2407-3-git-send-email-boris.brezillon@free-electrons.com


Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
parent b2f579b5

drivers/irqchip/irq-atmel-aic-common.c

+28 −0
Original line number Diff line number Diff line
@@ -139,6 +139,34 @@ static void __init aic_common_ext_irq_of_init(struct irq_domain *domain) 
	}

}



#define AT91_RTC_IDR           0x24

#define AT91_RTC_IMR           0x28

#define AT91_RTC_IRQ_MASK      0x1f



void __init aic_common_rtc_irq_fixup(struct device_node *root)

{

	struct device_node *np;

	void __iomem *regs;



	np = of_find_compatible_node(root, NULL, "atmel,at91rm9200-rtc");

	if (!np)

		np = of_find_compatible_node(root, NULL,

					     "atmel,at91sam9x5-rtc");



	if (!np)

		return;



	regs = of_iomap(np, 0);

	of_node_put(np);



	if (!regs)

		return;



	writel(AT91_RTC_IRQ_MASK, regs + AT91_RTC_IDR);



	iounmap(regs);

}



void __init aic_common_irq_fixup(const struct of_device_id *matches)

{

	struct device_node *root = of_find_node_by_path("/");

drivers/irqchip/irq-atmel-aic-common.h

+2 −0
Original line number Diff line number Diff line
@@ -32,6 +32,8 @@ struct irq_domain *__init aic_common_of_init(struct device_node *node, 
					     const struct irq_domain_ops *ops,

					     const char *name, int nirqs);



void __init aic_common_rtc_irq_fixup(struct device_node *root);



void __init aic_common_irq_fixup(const struct of_device_id *matches);



#endif /* __IRQ_ATMEL_AIC_COMMON_H */