diff options
Diffstat (limited to 'arch/arm/mach-s3c2410/irq.c')
| -rw-r--r-- | arch/arm/mach-s3c2410/irq.c | 112 |
1 files changed, 74 insertions, 38 deletions
diff --git a/arch/arm/mach-s3c2410/irq.c b/arch/arm/mach-s3c2410/irq.c index 9c7463bf8f8..3e9f3462c61 100644 --- a/arch/arm/mach-s3c2410/irq.c +++ b/arch/arm/mach-s3c2410/irq.c @@ -181,17 +181,19 @@ s3c_irq_unmask(unsigned int irqno) } struct irqchip s3c_irq_level_chip = { - .ack = s3c_irq_maskack, - .mask = s3c_irq_mask, - .unmask = s3c_irq_unmask, - .set_wake = s3c_irq_wake + .name = "s3c-level", + .ack = s3c_irq_maskack, + .mask = s3c_irq_mask, + .unmask = s3c_irq_unmask, + .set_wake = s3c_irq_wake }; static struct irqchip s3c_irq_chip = { - .ack = s3c_irq_ack, - .mask = s3c_irq_mask, - .unmask = s3c_irq_unmask, - .set_wake = s3c_irq_wake + .name = "s3c", + .ack = s3c_irq_ack, + .mask = s3c_irq_mask, + .unmask = s3c_irq_unmask, + .set_wake = s3c_irq_wake }; static void @@ -343,19 +345,21 @@ s3c_irqext_type(unsigned int irq, unsigned int type) } static struct irqchip s3c_irqext_chip = { - .mask = s3c_irqext_mask, - .unmask = s3c_irqext_unmask, - .ack = s3c_irqext_ack, - .set_type = s3c_irqext_type, - .set_wake = s3c_irqext_wake + .name = "s3c-ext", + .mask = s3c_irqext_mask, + .unmask = s3c_irqext_unmask, + .ack = s3c_irqext_ack, + .set_type = s3c_irqext_type, + .set_wake = s3c_irqext_wake }; static struct irqchip s3c_irq_eint0t4 = { - .ack = s3c_irq_ack, - .mask = s3c_irq_mask, - .unmask = s3c_irq_unmask, - .set_wake = s3c_irq_wake, - .set_type = s3c_irqext_type, + .name = "s3c-ext0", + .ack = s3c_irq_ack, + .mask = s3c_irq_mask, + .unmask = s3c_irq_unmask, + .set_wake = s3c_irq_wake, + .set_type = s3c_irqext_type, }; /* mask values for the parent registers for each of the interrupt types */ @@ -387,9 +391,10 @@ s3c_irq_uart0_ack(unsigned int irqno) } static struct irqchip s3c_irq_uart0 = { - .mask = s3c_irq_uart0_mask, - .unmask = s3c_irq_uart0_unmask, - .ack = s3c_irq_uart0_ack, + .name = "s3c-uart0", + .mask = s3c_irq_uart0_mask, + .unmask = s3c_irq_uart0_unmask, + .ack = s3c_irq_uart0_ack, }; /* UART1 */ @@ -413,9 +418,10 @@ s3c_irq_uart1_ack(unsigned int irqno) } static struct irqchip s3c_irq_uart1 = { - .mask = s3c_irq_uart1_mask, - .unmask = s3c_irq_uart1_unmask, - .ack = s3c_irq_uart1_ack, + .name = "s3c-uart1", + .mask = s3c_irq_uart1_mask, + .unmask = s3c_irq_uart1_unmask, + .ack = s3c_irq_uart1_ack, }; /* UART2 */ @@ -439,9 +445,10 @@ s3c_irq_uart2_ack(unsigned int irqno) } static struct irqchip s3c_irq_uart2 = { - .mask = s3c_irq_uart2_mask, - .unmask = s3c_irq_uart2_unmask, - .ack = s3c_irq_uart2_ack, + .name = "s3c-uart2", + .mask = s3c_irq_uart2_mask, + .unmask = s3c_irq_uart2_unmask, + .ack = s3c_irq_uart2_ack, }; /* ADC and Touchscreen */ @@ -465,9 +472,10 @@ s3c_irq_adc_ack(unsigned int irqno) } static struct irqchip s3c_irq_adc = { - .mask = s3c_irq_adc_mask, - .unmask = s3c_irq_adc_unmask, - .ack = s3c_irq_adc_ack, + .name = "s3c-adc", + .mask = s3c_irq_adc_mask, + .unmask = s3c_irq_adc_unmask, + .ack = s3c_irq_adc_ack, }; /* irq demux for adc */ @@ -569,18 +577,46 @@ 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 +763,8 @@ 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); |