diff options
Diffstat (limited to 'arch/arm/mach-imx/irq.c')
| -rw-r--r-- | arch/arm/mach-imx/irq.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/arm/mach-imx/irq.c b/arch/arm/mach-imx/irq.c index 232e3b9f880..531b95deadc 100644 --- a/arch/arm/mach-imx/irq.c +++ b/arch/arm/mach-imx/irq.c @@ -36,10 +36,7 @@ /* * * We simply use the ENABLE DISABLE registers inside of the IMX - * to turn on/off specific interrupts. FIXME- We should - * also add support for the accelerated interrupt controller - * by putting offets to irq jump code in the appropriate - * places. + * to turn on/off specific interrupts. * */ @@ -102,6 +99,28 @@ imx_unmask_irq(unsigned int irq) __raw_writel(irq, IMX_AITC_INTENNUM); } +#ifdef CONFIG_FIQ +int imx_set_irq_fiq(unsigned int irq, unsigned int type) +{ + unsigned int irqt; + + if (irq >= IMX_IRQS) + return -EINVAL; + + if (irq < IMX_IRQS / 2) { + irqt = __raw_readl(IMX_AITC_INTTYPEL) & ~(1 << irq); + __raw_writel(irqt | (!!type << irq), IMX_AITC_INTTYPEL); + } else { + irq -= IMX_IRQS / 2; + irqt = __raw_readl(IMX_AITC_INTTYPEH) & ~(1 << irq); + __raw_writel(irqt | (!!type << irq), IMX_AITC_INTTYPEH); + } + + return 0; +} +EXPORT_SYMBOL(imx_set_irq_fiq); +#endif /* CONFIG_FIQ */ + static int imx_gpio_irq_type(unsigned int _irq, unsigned int type) { @@ -284,4 +303,9 @@ imx_init_irq(void) /* Release masking of interrupts according to priority */ __raw_writel(-1, IMX_AITC_NIMASK); + +#ifdef CONFIG_FIQ + /* Initialize FIQ */ + init_FIQ(); +#endif } |