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Commit 4185315a authored by Boris Brezillon's avatar Boris Brezillon Committed by Jason Cooper
Browse files

irqchip: atmel-aic: Add irq fixup for RTT block 



Signed-off-by: default avatarBoris BREZILLON <boris.brezillon@free-electrons.com>
Link: https://lkml.kernel.org/r/1415003464-29239-2-git-send-email-boris.brezillon@free-electrons.com


Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
parent f114040e

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

+26 −0
Original line number Diff line number Diff line
@@ -167,6 +167,32 @@ void __init aic_common_rtc_irq_fixup(struct device_node *root) 
	iounmap(regs);

}



#define AT91_RTT_MR		0x00			/* Real-time Mode Register */

#define AT91_RTT_ALMIEN		(1 << 16)		/* Alarm Interrupt Enable */

#define AT91_RTT_RTTINCIEN	(1 << 17)		/* Real Time Timer Increment Interrupt Enable */



void __init aic_common_rtt_irq_fixup(struct device_node *root)

{

	struct device_node *np;

	void __iomem *regs;



	/*

	 * The at91sam9263 SoC has 2 instances of the RTT block, hence we

	 * iterate over the DT to find each occurrence.

	 */

	for_each_compatible_node(np, NULL, "atmel,at91sam9260-rtt") {

		regs = of_iomap(np, 0);

		if (!regs)

			continue;



		writel(readl(regs + AT91_RTT_MR) &

		       ~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN),

		       regs + AT91_RTT_MR);



		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
@@ -34,6 +34,8 @@ struct irq_domain *__init aic_common_of_init(struct device_node *node, 


void __init aic_common_rtc_irq_fixup(struct device_node *root);



void __init aic_common_rtt_irq_fixup(struct device_node *root);



void __init aic_common_irq_fixup(const struct of_device_id *matches);



#endif /* __IRQ_ATMEL_AIC_COMMON_H */