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| author | Boris BREZILLON <boris.brezillon@free-electrons.com> | 2014-07-10 20:25:40 +0200 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2014-07-17 13:38:54 +0000 |
| commit | 3d61467f9bab36aee786f762730b73565dbef3bf (patch) | |
| tree | 233f2998088b3e660005aafc68b2c06bf289d9c1 /drivers/irqchip/irq-atmel-aic-common.c | |
| parent | b2f579b58e93ded5916fb69a28cfc86e0ab951a6 (diff) | |
| download | lwn-3d61467f9bab36aee786f762730b73565dbef3bf.tar.gz lwn-3d61467f9bab36aee786f762730b73565dbef3bf.zip | |
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: Boris 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: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'drivers/irqchip/irq-atmel-aic-common.c')
| -rw-r--r-- | drivers/irqchip/irq-atmel-aic-common.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-atmel-aic-common.c b/drivers/irqchip/irq-atmel-aic-common.c index 4705bdbc6e7b..6ae3cdee0681 100644 --- a/drivers/irqchip/irq-atmel-aic-common.c +++ b/drivers/irqchip/irq-atmel-aic-common.c @@ -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("/"); |