diff options
Diffstat (limited to 'arch/arm/mach-s3c2410/irq.c')
| -rw-r--r-- | arch/arm/mach-s3c2410/irq.c | 44 |
1 files changed, 36 insertions, 8 deletions
diff --git a/arch/arm/mach-s3c2410/irq.c b/arch/arm/mach-s3c2410/irq.c index 9c7463bf8f8..0ecfef3c751 100644 --- a/arch/arm/mach-s3c2410/irq.c +++ b/arch/arm/mach-s3c2410/irq.c @@ -569,18 +569,46 @@ s3c_irq_demux_uart2(unsigned int irq, } static void -s3c_irq_demux_extint(unsigned int irq, - struct irqdesc *desc, - struct pt_regs *regs) +s3c_irq_demux_extint8(unsigned int irq, + struct irqdesc *desc, + struct pt_regs *regs) { unsigned long eintpnd = __raw_readl(S3C24XX_EINTPEND); unsigned long eintmsk = __raw_readl(S3C24XX_EINTMASK); eintpnd &= ~eintmsk; + eintpnd &= ~0xff; /* ignore lower irqs */ - if (eintpnd) { - irq = fls(eintpnd); - irq += (IRQ_EINT4 - (4 + 1)); + /* we may as well handle all the pending IRQs here */ + + while (eintpnd) { + irq = __ffs(eintpnd); + eintpnd &= ~(1<<irq); + + irq += (IRQ_EINT4 - 4); + desc_handle_irq(irq, irq_desc + irq, regs); + } + +} + +static void +s3c_irq_demux_extint4t7(unsigned int irq, + struct irqdesc *desc, + struct pt_regs *regs) +{ + unsigned long eintpnd = __raw_readl(S3C24XX_EINTPEND); + unsigned long eintmsk = __raw_readl(S3C24XX_EINTMASK); + + eintpnd &= ~eintmsk; + eintpnd &= 0xff; /* only lower irqs */ + + /* we may as well handle all the pending IRQs here */ + + while (eintpnd) { + irq = __ffs(eintpnd); + eintpnd &= ~(1<<irq); + + irq += (IRQ_EINT4 - 4); desc_handle_irq(irq, irq_desc + irq, regs); } @@ -727,8 +755,8 @@ void __init s3c24xx_init_irq(void) /* setup the cascade irq handlers */ - set_irq_chained_handler(IRQ_EINT4t7, s3c_irq_demux_extint); - set_irq_chained_handler(IRQ_EINT8t23, s3c_irq_demux_extint); + set_irq_chained_handler(IRQ_EINT4t7, s3c_irq_demux_extint4t7); + set_irq_chained_handler(IRQ_EINT8t23, s3c_irq_demux_extint8); set_irq_chained_handler(IRQ_UART0, s3c_irq_demux_uart0); set_irq_chained_handler(IRQ_UART1, s3c_irq_demux_uart1); |