diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/adm5120/files/arch/mips/adm5120/irq.c | 65 |
1 files changed, 23 insertions, 42 deletions
diff --git a/target/linux/adm5120/files/arch/mips/adm5120/irq.c b/target/linux/adm5120/files/arch/mips/adm5120/irq.c index 8d6fbe6a3..5838e5e33 100644 --- a/target/linux/adm5120/files/arch/mips/adm5120/irq.c +++ b/target/linux/adm5120/files/arch/mips/adm5120/irq.c @@ -29,6 +29,7 @@ #include <linux/interrupt.h> #include <linux/ioport.h> +#include <asm/io.h> #include <asm/irq.h> #include <asm/irq_cpu.h> #include <asm/mipsregs.h> @@ -37,18 +38,18 @@ #include <asm/mach-adm5120/adm5120_defs.h> #include <asm/mach-adm5120/adm5120_irq.h> -#define INTC_REG(r) (*(volatile u32 *)(KSEG1ADDR(ADM5120_INTC_BASE) + r)) +#define INTC_WRITE(reg, val) __raw_writel((val), \ + (void __iomem *)(KSEG1ADDR(ADM5120_INTC_BASE) + reg)) + +#define INTC_READ(reg) __raw_readl( \ + (void __iomem *)(KSEG1ADDR(ADM5120_INTC_BASE) + reg)) static void adm5120_intc_irq_unmask(unsigned int irq); static void adm5120_intc_irq_mask(unsigned int irq); static int adm5120_intc_irq_set_type(unsigned int irq, unsigned int flow_type); static struct irq_chip adm5120_intc_irq_chip = { -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20) .name = "INTC", -#else - .typename = "INTC", -#endif .unmask = adm5120_intc_irq_unmask, .mask = adm5120_intc_irq_mask, .mask_ack = adm5120_intc_irq_mask, @@ -62,22 +63,14 @@ static struct irqaction adm5120_intc_irq_action = { static void adm5120_intc_irq_unmask(unsigned int irq) { - unsigned long flags; - irq -= ADM5120_INTC_IRQ_BASE; - local_irq_save(flags); - INTC_REG(INTC_REG_IRQ_ENABLE) = (1 << irq); - local_irq_restore(flags); + INTC_WRITE(INTC_REG_IRQ_ENABLE, 1 << irq); } static void adm5120_intc_irq_mask(unsigned int irq) { - unsigned long flags; - irq -= ADM5120_INTC_IRQ_BASE; - local_irq_save(flags); - INTC_REG(INTC_REG_IRQ_DISABLE) = (1 << irq); - local_irq_restore(flags); + INTC_WRITE(INTC_REG_IRQ_DISABLE, 1 << irq); } static int adm5120_intc_irq_set_type(unsigned int irq, unsigned int flow_type) @@ -86,9 +79,8 @@ static int adm5120_intc_irq_set_type(unsigned int irq, unsigned int flow_type) #if 1 unsigned int sense; unsigned long mode; - int err; + int err = 0; - err = 0; sense = flow_type & (IRQ_TYPE_SENSE_MASK); switch (sense) { case IRQ_TYPE_NONE: @@ -108,20 +100,20 @@ static int adm5120_intc_irq_set_type(unsigned int irq, unsigned int flow_type) err = -EINVAL; break; } - + if (err) return err; - + switch (irq) { case ADM5120_IRQ_GPIO2: case ADM5120_IRQ_GPIO4: - mode = INTC_REG(INTC_REG_INT_MODE); + mode = INTC_READ(INTC_REG_INT_MODE); if (sense == IRQ_TYPE_LEVEL_LOW) mode |= (1 << (irq-ADM5120_INTC_IRQ_BASE)); else mode &= (1 << (irq-ADM5120_INTC_IRQ_BASE)); - - INTC_REG(INTC_REG_INT_MODE) = mode; + + INTC_WRITE(INTC_REG_INT_MODE, mode); /* fallthrogh */ default: irq_desc[irq].status &= ~IRQ_TYPE_SENSE_MASK; @@ -137,33 +129,21 @@ static void adm5120_intc_irq_dispatch(void) unsigned long status; int irq; -#if 1 /* dispatch only one IRQ at a time */ - status = INTC_REG(INTC_REG_IRQ_STATUS) & INTC_INT_ALL; + status = INTC_READ(INTC_REG_IRQ_STATUS) & INTC_INT_ALL; if (status) { irq = ADM5120_INTC_IRQ_BASE+fls(status)-1; do_IRQ(irq); } else spurious_interrupt(); -#else - status = INTC_REG(INTC_REG_IRQ_STATUS) & INTC_INT_ALL; - if (status) { - for (irq=ADM5120_INTC_IRQ_BASE; irq <= ADM5120_INTC_IRQ_BASE + - INTC_IRQ_LAST; irq++, status >>=1) { - if ((status & 1) == 1) - do_IRQ(irq); - } - } else - spurious_interrupt(); -#endif } asmlinkage void plat_irq_dispatch(void) { unsigned long pending; - pending = read_c0_status() & read_c0_cause(); + pending = read_c0_status() & read_c0_cause() & ST0_IM; if (pending & STATUSF_IP7) do_IRQ(ADM5120_IRQ_COUNTER); @@ -174,23 +154,24 @@ asmlinkage void plat_irq_dispatch(void) } #define INTC_IRQ_STATUS (IRQ_LEVEL | IRQ_TYPE_LEVEL_HIGH | IRQ_DISABLED) + static void __init adm5120_intc_irq_init(int base) { int i; /* disable all interrupts */ - INTC_REG(INTC_REG_IRQ_DISABLE) = INTC_INT_ALL; + INTC_WRITE(INTC_REG_IRQ_DISABLE, INTC_INT_ALL); /* setup all interrupts to generate IRQ instead of FIQ */ - INTC_REG(INTC_REG_INT_MODE) = 0; + INTC_WRITE(INTC_REG_INT_MODE, 0); /* set active level for all external interrupts to HIGH */ - INTC_REG(INTC_REG_INT_LEVEL) = 0; + INTC_WRITE(INTC_REG_INT_LEVEL, 0); /* disable usage of the TEST_SOURCE register */ - INTC_REG(INTC_REG_IRQ_SOURCE_SELECT) = 0; + INTC_WRITE(INTC_REG_IRQ_SOURCE_SELECT, 0); - for(i=ADM5120_INTC_IRQ_BASE; i <= ADM5120_INTC_IRQ_BASE+INTC_IRQ_LAST; + for (i = ADM5120_INTC_IRQ_BASE; i <= ADM5120_INTC_IRQ_BASE+INTC_IRQ_LAST; i++) { irq_desc[i].status = INTC_IRQ_STATUS; - set_irq_chip_and_handler(i, &adm5120_intc_irq_chip, + set_irq_chip_and_handler(i, &adm5120_intc_irq_chip, handle_level_irq); } |