diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-s3c2410/irq.c | 49 |
1 files changed, 33 insertions, 16 deletions
diff --git a/arch/arm/mach-s3c2410/irq.c b/arch/arm/mach-s3c2410/irq.c index 46465742ed7..6822dc7f779 100644 --- a/arch/arm/mach-s3c2410/irq.c +++ b/arch/arm/mach-s3c2410/irq.c @@ -191,13 +191,9 @@ static struct irqchip s3c_irq_chip = { .ack = s3c_irq_ack, .mask = s3c_irq_mask, .unmask = s3c_irq_unmask, - .set_wake = s3c_irq_wake + .set_wake = s3c_irq_wake }; -/* S3C2410_EINTMASK - * S3C2410_EINTPEND - */ - static void s3c_irqext_mask(unsigned int irqno) { @@ -205,9 +201,9 @@ s3c_irqext_mask(unsigned int irqno) irqno -= EXTINT_OFF; - mask = __raw_readl(S3C2410_EINTMASK); + mask = __raw_readl(S3C24XX_EINTMASK); mask |= ( 1UL << irqno); - __raw_writel(mask, S3C2410_EINTMASK); + __raw_writel(mask, S3C24XX_EINTMASK); if (irqno <= (IRQ_EINT7 - EXTINT_OFF)) { /* check to see if all need masking */ @@ -232,11 +228,11 @@ s3c_irqext_ack(unsigned int irqno) bit = 1UL << (irqno - EXTINT_OFF); - mask = __raw_readl(S3C2410_EINTMASK); + mask = __raw_readl(S3C24XX_EINTMASK); - __raw_writel(bit, S3C2410_EINTPEND); + __raw_writel(bit, S3C24XX_EINTPEND); - req = __raw_readl(S3C2410_EINTPEND); + req = __raw_readl(S3C24XX_EINTPEND); req &= ~mask; /* not sure if we should be acking the parent irq... */ @@ -257,9 +253,9 @@ s3c_irqext_unmask(unsigned int irqno) irqno -= EXTINT_OFF; - mask = __raw_readl(S3C2410_EINTMASK); + mask = __raw_readl(S3C24XX_EINTMASK); mask &= ~( 1UL << irqno); - __raw_writel(mask, S3C2410_EINTMASK); + __raw_writel(mask, S3C24XX_EINTMASK); s3c_irq_unmask((irqno <= (IRQ_EINT7 - EXTINT_OFF)) ? IRQ_EINT4t7 : IRQ_EINT8t23); } @@ -572,6 +568,23 @@ s3c_irq_demux_uart2(unsigned int irq, s3c_irq_demux_uart(IRQ_S3CUART_RX2, regs); } +static void +s3c_irq_demux_extint(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; + + if (eintpnd) { + irq = fls(eintpnd); + irq += (IRQ_EINT4 - (4 + 1)); + + desc_handle_irq(irq, irq_desc + irq, regs); + } +} /* s3c24xx_init_irq * @@ -591,12 +604,12 @@ void __init s3c24xx_init_irq(void) last = 0; for (i = 0; i < 4; i++) { - pend = __raw_readl(S3C2410_EINTPEND); + pend = __raw_readl(S3C24XX_EINTPEND); if (pend == 0 || pend == last) break; - __raw_writel(pend, S3C2410_EINTPEND); + __raw_writel(pend, S3C24XX_EINTPEND); printk("irq: clearing pending ext status %08x\n", (int)pend); last = pend; } @@ -630,12 +643,14 @@ void __init s3c24xx_init_irq(void) irqdbf("s3c2410_init_irq: registering s3c2410 interrupt handlers\n"); - for (irqno = IRQ_BATT_FLT; irqno <= IRQ_ADCPARENT; irqno++) { + for (irqno = IRQ_EINT4t7; irqno <= IRQ_ADCPARENT; irqno++) { /* set all the s3c2410 internal irqs */ switch (irqno) { /* deal with the special IRQs (cascaded) */ + case IRQ_EINT4t7: + case IRQ_EINT8t23: case IRQ_UART0: case IRQ_UART1: case IRQ_UART2: @@ -659,12 +674,14 @@ 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_UART0, s3c_irq_demux_uart0); set_irq_chained_handler(IRQ_UART1, s3c_irq_demux_uart1); set_irq_chained_handler(IRQ_UART2, s3c_irq_demux_uart2); set_irq_chained_handler(IRQ_ADCPARENT, s3c_irq_demux_adc); - /* external interrupts */ for (irqno = IRQ_EINT0; irqno <= IRQ_EINT3; irqno++) { |