Re: [PATCH 4/6] irqchip: add irqchip driver for nuc900

Arnd Bergmann
2016-06-29T15:27:53Z

On Saturday, June 25, 2016 6:37:20 PM CEST Wan Zongshun wrote:
> +#define IRQ_WDT W90X900_IRQ(1)
> +#define IRQ_WWDT W90X900_IRQ(2)
> +#define IRQ_LVD W90X900_IRQ(3)
> +#define IRQ_EXT0 W90X900_IRQ(4)
> +#define IRQ_EXT1 W90X900_IRQ(5)
> +#define IRQ_EXT2 W90X900_IRQ(6)
> +#define IRQ_EXT3 W90X900_IRQ(7)
> +#define IRQ_EXT4 W90X900_IRQ(8)
> +#define IRQ_EXT5 W90X900_IRQ(9)
> +#define IRQ_EXT6 W90X900_IRQ(10)

I'd suggest dropping the list, the contents are now in the dts.

> diff --git a/arch/arm/mach-w90x900/include/mach/nuc970-regs-aic.h b/arch/arm/mach-w90x900/include/mach/nuc970-regs-aic.h
> new file mode 100644
> index 0000000..7a77016
> --- /dev/null
> +++ b/arch/arm/mach-w90x900/include/mach/nuc970-regs-aic.h
> @@ -0,0 +1,53 @@
> +#ifndef __ASM_ARCH_REGS_AIC_H
> +#define __ASM_ARCH_REGS_AIC_H
> +
> +/*NUC970 AIC regs*/
> +
> +#define REG_AIC_SCR1 0x00
> +#define REG_AIC_SCR2 0x04
> +#define REG_AIC_SCR3 0x08
> +#define REG_AIC_SCR4 0x0C
> +#define REG_AIC_SCR5 0x10

And like the clk driver, these should all be in the irqchip driver instead
of a separate header.

> +
> +static void __iomem *aic_base;
> +static struct irq_domain *aic_domain;
> +#define MAKE_HWIRQ(irqnum) (irqnum)

The macro appears to be unused.

> +static void nuc970_irq_mask(struct irq_data *d)
> +{
> + if (d->irq < 32)
> + __raw_writel(1 << (d->irq), aic_base + REG_AIC_MDCR);
> + else
> + __raw_writel(1 << (d->irq - 32), aic_base + REG_AIC_MDCRH);
> +}

writel()

Arnd