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Diffstat (limited to 'arch/arm/plat-s3c64xx/irq.c')
-rw-r--r--arch/arm/plat-s3c64xx/irq.c209
1 files changed, 11 insertions, 198 deletions
diff --git a/arch/arm/plat-s3c64xx/irq.c b/arch/arm/plat-s3c64xx/irq.c
index 8dc5b6da978..67a145d440f 100644
--- a/arch/arm/plat-s3c64xx/irq.c
+++ b/arch/arm/plat-s3c64xx/irq.c
@@ -21,88 +21,11 @@
#include <asm/hardware/vic.h>
#include <mach/map.h>
-#include <plat/regs-serial.h>
-#include <plat/regs-timer.h>
+#include <plat/irq-vic-timer.h>
+#include <plat/irq-uart.h>
#include <plat/cpu.h>
-/* Timer interrupt handling */
-
-static void s3c_irq_demux_timer(unsigned int base_irq, unsigned int sub_irq)
-{
- generic_handle_irq(sub_irq);
-}
-
-static void s3c_irq_demux_timer0(unsigned int irq, struct irq_desc *desc)
-{
- s3c_irq_demux_timer(irq, IRQ_TIMER0);
-}
-
-static void s3c_irq_demux_timer1(unsigned int irq, struct irq_desc *desc)
-{
- s3c_irq_demux_timer(irq, IRQ_TIMER1);
-}
-
-static void s3c_irq_demux_timer2(unsigned int irq, struct irq_desc *desc)
-{
- s3c_irq_demux_timer(irq, IRQ_TIMER2);
-}
-
-static void s3c_irq_demux_timer3(unsigned int irq, struct irq_desc *desc)
-{
- s3c_irq_demux_timer(irq, IRQ_TIMER3);
-}
-
-static void s3c_irq_demux_timer4(unsigned int irq, struct irq_desc *desc)
-{
- s3c_irq_demux_timer(irq, IRQ_TIMER4);
-}
-
-/* We assume the IRQ_TIMER0..IRQ_TIMER4 range is continuous. */
-
-static void s3c_irq_timer_mask(unsigned int irq)
-{
- u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
-
- reg &= 0x1f; /* mask out pending interrupts */
- reg &= ~(1 << (irq - IRQ_TIMER0));
- __raw_writel(reg, S3C64XX_TINT_CSTAT);
-}
-
-static void s3c_irq_timer_unmask(unsigned int irq)
-{
- u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
-
- reg &= 0x1f; /* mask out pending interrupts */
- reg |= 1 << (irq - IRQ_TIMER0);
- __raw_writel(reg, S3C64XX_TINT_CSTAT);
-}
-
-static void s3c_irq_timer_ack(unsigned int irq)
-{
- u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
-
- reg &= 0x1f;
- reg |= (1 << 5) << (irq - IRQ_TIMER0);
- __raw_writel(reg, S3C64XX_TINT_CSTAT);
-}
-
-static struct irq_chip s3c_irq_timer = {
- .name = "s3c-timer",
- .mask = s3c_irq_timer_mask,
- .unmask = s3c_irq_timer_unmask,
- .ack = s3c_irq_timer_ack,
-};
-
-struct uart_irq {
- void __iomem *regs;
- unsigned int base_irq;
- unsigned int parent_irq;
-};
-
-/* Note, we make use of the fact that the parent IRQs, IRQ_UART[0..3]
- * are consecutive when looking up the interrupt in the demux routines.
- */
-static struct uart_irq uart_irqs[] = {
+static struct s3c_uart_irq uart_irqs[] = {
[0] = {
.regs = S3C_VA_UART0,
.base_irq = IRQ_S3CUART_BASE0,
@@ -125,132 +48,22 @@ static struct uart_irq uart_irqs[] = {
},
};
-static inline void __iomem *s3c_irq_uart_base(unsigned int irq)
-{
- struct uart_irq *uirq = get_irq_chip_data(irq);
- return uirq->regs;
-}
-
-static inline unsigned int s3c_irq_uart_bit(unsigned int irq)
-{
- return irq & 3;
-}
-
-/* UART interrupt registers, not worth adding to seperate include header */
-
-static void s3c_irq_uart_mask(unsigned int irq)
-{
- void __iomem *regs = s3c_irq_uart_base(irq);
- unsigned int bit = s3c_irq_uart_bit(irq);
- u32 reg;
-
- reg = __raw_readl(regs + S3C64XX_UINTM);
- reg |= (1 << bit);
- __raw_writel(reg, regs + S3C64XX_UINTM);
-}
-
-static void s3c_irq_uart_maskack(unsigned int irq)
-{
- void __iomem *regs = s3c_irq_uart_base(irq);
- unsigned int bit = s3c_irq_uart_bit(irq);
- u32 reg;
-
- reg = __raw_readl(regs + S3C64XX_UINTM);
- reg |= (1 << bit);
- __raw_writel(reg, regs + S3C64XX_UINTM);
- __raw_writel(1 << bit, regs + S3C64XX_UINTP);
-}
-
-static void s3c_irq_uart_unmask(unsigned int irq)
-{
- void __iomem *regs = s3c_irq_uart_base(irq);
- unsigned int bit = s3c_irq_uart_bit(irq);
- u32 reg;
-
- reg = __raw_readl(regs + S3C64XX_UINTM);
- reg &= ~(1 << bit);
- __raw_writel(reg, regs + S3C64XX_UINTM);
-}
-
-static void s3c_irq_uart_ack(unsigned int irq)
-{
- void __iomem *regs = s3c_irq_uart_base(irq);
- unsigned int bit = s3c_irq_uart_bit(irq);
-
- __raw_writel(1 << bit, regs + S3C64XX_UINTP);
-}
-
-static void s3c_irq_demux_uart(unsigned int irq, struct irq_desc *desc)
-{
- struct uart_irq *uirq = &uart_irqs[irq - IRQ_UART0];
- u32 pend = __raw_readl(uirq->regs + S3C64XX_UINTP);
- int base = uirq->base_irq;
-
- if (pend & (1 << 0))
- generic_handle_irq(base);
- if (pend & (1 << 1))
- generic_handle_irq(base + 1);
- if (pend & (1 << 2))
- generic_handle_irq(base + 2);
- if (pend & (1 << 3))
- generic_handle_irq(base + 3);
-}
-
-static struct irq_chip s3c_irq_uart = {
- .name = "s3c-uart",
- .mask = s3c_irq_uart_mask,
- .unmask = s3c_irq_uart_unmask,
- .mask_ack = s3c_irq_uart_maskack,
- .ack = s3c_irq_uart_ack,
-};
-
-static void __init s3c64xx_uart_irq(struct uart_irq *uirq)
-{
- void __iomem *reg_base = uirq->regs;
- unsigned int irq;
- int offs;
-
- /* mask all interrupts at the start. */
- __raw_writel(0xf, reg_base + S3C64XX_UINTM);
-
- for (offs = 0; offs < 3; offs++) {
- irq = uirq->base_irq + offs;
-
- set_irq_chip(irq, &s3c_irq_uart);
- set_irq_chip_data(irq, uirq);
- set_irq_handler(irq, handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
-
- set_irq_chained_handler(uirq->parent_irq, s3c_irq_demux_uart);
-}
void __init s3c64xx_init_irq(u32 vic0_valid, u32 vic1_valid)
{
- int uart, irq;
-
printk(KERN_DEBUG "%s: initialising interrupts\n", __func__);
/* initialise the pair of VICs */
- vic_init(S3C_VA_VIC0, S3C_VIC0_BASE, vic0_valid, 0);
- vic_init(S3C_VA_VIC1, S3C_VIC1_BASE, vic1_valid, 0);
+ vic_init(VA_VIC0, IRQ_VIC0_BASE, vic0_valid, 0);
+ vic_init(VA_VIC1, IRQ_VIC1_BASE, vic1_valid, 0);
/* add the timer sub-irqs */
- set_irq_chained_handler(IRQ_TIMER0_VIC, s3c_irq_demux_timer0);
- set_irq_chained_handler(IRQ_TIMER1_VIC, s3c_irq_demux_timer1);
- set_irq_chained_handler(IRQ_TIMER2_VIC, s3c_irq_demux_timer2);
- set_irq_chained_handler(IRQ_TIMER3_VIC, s3c_irq_demux_timer3);
- set_irq_chained_handler(IRQ_TIMER4_VIC, s3c_irq_demux_timer4);
-
- for (irq = IRQ_TIMER0; irq <= IRQ_TIMER4; irq++) {
- set_irq_chip(irq, &s3c_irq_timer);
- set_irq_handler(irq, handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
+ s3c_init_vic_timer_irq(IRQ_TIMER0_VIC, IRQ_TIMER0);
+ s3c_init_vic_timer_irq(IRQ_TIMER1_VIC, IRQ_TIMER1);
+ s3c_init_vic_timer_irq(IRQ_TIMER2_VIC, IRQ_TIMER2);
+ s3c_init_vic_timer_irq(IRQ_TIMER3_VIC, IRQ_TIMER3);
+ s3c_init_vic_timer_irq(IRQ_TIMER4_VIC, IRQ_TIMER4);
- for (uart = 0; uart < ARRAY_SIZE(uart_irqs); uart++)
- s3c64xx_uart_irq(&uart_irqs[uart]);
+ s3c_init_uart_irqs(uart_irqs, ARRAY_SIZE(uart_irqs));
}
-
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-30 22:42:12 +0000