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authorBen Dooks <ben-linux@fluff.org>2010-01-06 10:14:51 +0900
committerBen Dooks <ben-linux@fluff.org>2010-01-15 17:10:13 +0900
commit7162ba03729e0a47aaab44448ce2453f07a9664d (patch)
tree7f1d852cd36db6c39b2224411d986a4b9fec8390 /arch/arm/plat-s3c64xx
parent4f830db9629e413e7c5523085ab009b0de5ae6d0 (diff)
ARM: SAMSUNG: Move IRQ VIC timer handling out to common header files
Move the VIC based timer interrupt handling out of plat-s3c64xx and into plat-samsung to be re-used for other systems. This also reduces the code size as we now have a common init routine and use the irq_desc to store the interrupt number of the timer. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/plat-s3c64xx')
-rw-r--r--arch/arm/plat-s3c64xx/Kconfig1
-rw-r--r--arch/arm/plat-s3c64xx/irq.c90
2 files changed, 8 insertions, 83 deletions
diff --git a/arch/arm/plat-s3c64xx/Kconfig b/arch/arm/plat-s3c64xx/Kconfig
index bec12242706..02d716fb157 100644
--- a/arch/arm/plat-s3c64xx/Kconfig
+++ b/arch/arm/plat-s3c64xx/Kconfig
@@ -14,6 +14,7 @@ config PLAT_S3C64XX
select NO_IOPORT
select ARCH_REQUIRE_GPIOLIB
select SAMSUNG_CLKSRC
+ select SAMSUNG_IRQ_VIC_TIMER
select S3C_GPIO_TRACK
select S3C_GPIO_PULL_UPDOWN
select S3C_GPIO_CFG_S3C24XX
diff --git a/arch/arm/plat-s3c64xx/irq.c b/arch/arm/plat-s3c64xx/irq.c
index 8dc5b6da978..8b69bca0587 100644
--- a/arch/arm/plat-s3c64xx/irq.c
+++ b/arch/arm/plat-s3c64xx/irq.c
@@ -21,78 +21,10 @@
#include <asm/hardware/vic.h>
#include <mach/map.h>
+#include <plat/irq-vic-timer.h>
#include <plat/regs-serial.h>
-#include <plat/regs-timer.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;
@@ -227,7 +159,7 @@ static void __init s3c64xx_uart_irq(struct uart_irq *uirq)
void __init s3c64xx_init_irq(u32 vic0_valid, u32 vic1_valid)
{
- int uart, irq;
+ int uart;
printk(KERN_DEBUG "%s: initialising interrupts\n", __func__);
@@ -237,20 +169,12 @@ void __init s3c64xx_init_irq(u32 vic0_valid, u32 vic1_valid)
/* 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]);
}
-
-