diff options
Diffstat (limited to 'arch/mips/loongson32/common/irq.c')
| -rw-r--r-- | arch/mips/loongson32/common/irq.c | 55 |
1 files changed, 52 insertions, 3 deletions
diff --git a/arch/mips/loongson32/common/irq.c b/arch/mips/loongson32/common/irq.c index 455a7704a90f..635a4abe1f48 100644 --- a/arch/mips/loongson32/common/irq.c +++ b/arch/mips/loongson32/common/irq.c @@ -62,12 +62,58 @@ static void ls1x_irq_unmask(struct irq_data *d) | (1 << bit), LS1X_INTC_INTIEN(n)); } +static int ls1x_irq_settype(struct irq_data *d, unsigned int type) +{ + unsigned int bit = (d->irq - LS1X_IRQ_BASE) & 0x1f; + unsigned int n = (d->irq - LS1X_IRQ_BASE) >> 5; + + switch (type) { + case IRQ_TYPE_LEVEL_HIGH: + __raw_writel(__raw_readl(LS1X_INTC_INTPOL(n)) + | (1 << bit), LS1X_INTC_INTPOL(n)); + __raw_writel(__raw_readl(LS1X_INTC_INTEDGE(n)) + & ~(1 << bit), LS1X_INTC_INTEDGE(n)); + break; + case IRQ_TYPE_LEVEL_LOW: + __raw_writel(__raw_readl(LS1X_INTC_INTPOL(n)) + & ~(1 << bit), LS1X_INTC_INTPOL(n)); + __raw_writel(__raw_readl(LS1X_INTC_INTEDGE(n)) + & ~(1 << bit), LS1X_INTC_INTEDGE(n)); + break; + case IRQ_TYPE_EDGE_RISING: + __raw_writel(__raw_readl(LS1X_INTC_INTPOL(n)) + | (1 << bit), LS1X_INTC_INTPOL(n)); + __raw_writel(__raw_readl(LS1X_INTC_INTEDGE(n)) + | (1 << bit), LS1X_INTC_INTEDGE(n)); + break; + case IRQ_TYPE_EDGE_FALLING: + __raw_writel(__raw_readl(LS1X_INTC_INTPOL(n)) + & ~(1 << bit), LS1X_INTC_INTPOL(n)); + __raw_writel(__raw_readl(LS1X_INTC_INTEDGE(n)) + | (1 << bit), LS1X_INTC_INTEDGE(n)); + break; + case IRQ_TYPE_EDGE_BOTH: + __raw_writel(__raw_readl(LS1X_INTC_INTPOL(n)) + & ~(1 << bit), LS1X_INTC_INTPOL(n)); + __raw_writel(__raw_readl(LS1X_INTC_INTEDGE(n)) + | (1 << bit), LS1X_INTC_INTEDGE(n)); + break; + case IRQ_TYPE_NONE: + break; + default: + return -EINVAL; + } + + return 0; +} + static struct irq_chip ls1x_irq_chip = { .name = "LS1X-INTC", .irq_ack = ls1x_irq_ack, .irq_mask = ls1x_irq_mask, .irq_mask_ack = ls1x_irq_mask_ack, .irq_unmask = ls1x_irq_unmask, + .irq_set_type = ls1x_irq_settype, }; static void ls1x_irq_dispatch(int n) @@ -107,7 +153,7 @@ asmlinkage void plat_irq_dispatch(void) } -struct irqaction cascade_irqaction = { +static struct irqaction cascade_irqaction = { .handler = no_action, .name = "cascade", .flags = IRQF_NO_THREAD, @@ -120,7 +166,7 @@ static void __init ls1x_irq_init(int base) /* Disable interrupts and clear pending, * setup all IRQs as high level triggered */ - for (n = 0; n < 4; n++) { + for (n = 0; n < INTN; n++) { __raw_writel(0x0, LS1X_INTC_INTIEN(n)); __raw_writel(0xffffffff, LS1X_INTC_INTCLR(n)); __raw_writel(0xffffffff, LS1X_INTC_INTPOL(n)); @@ -129,7 +175,7 @@ static void __init ls1x_irq_init(int base) } - for (n = base; n < LS1X_IRQS; n++) { + for (n = base; n < NR_IRQS; n++) { irq_set_chip_and_handler(n, &ls1x_irq_chip, handle_level_irq); } @@ -138,6 +184,9 @@ static void __init ls1x_irq_init(int base) setup_irq(INT1_IRQ, &cascade_irqaction); setup_irq(INT2_IRQ, &cascade_irqaction); setup_irq(INT3_IRQ, &cascade_irqaction); +#if defined(CONFIG_LOONGSON1_LS1C) + setup_irq(INT4_IRQ, &cascade_irqaction); +#endif } void __init arch_init_irq(void) |