diff options
Diffstat (limited to 'arch/mips/jz4740/irq.c')
| -rw-r--r-- | arch/mips/jz4740/irq.c | 39 |
1 files changed, 31 insertions, 8 deletions
diff --git a/arch/mips/jz4740/irq.c b/arch/mips/jz4740/irq.c index 615eaa844615..854cd14bea94 100644 --- a/arch/mips/jz4740/irq.c +++ b/arch/mips/jz4740/irq.c @@ -32,7 +32,9 @@ #include "../../drivers/irqchip/irqchip.h" -static void __iomem *jz_intc_base; +struct ingenic_intc_data { + void __iomem *base; +}; #define JZ_REG_INTC_STATUS 0x00 #define JZ_REG_INTC_MASK 0x04 @@ -42,9 +44,10 @@ static void __iomem *jz_intc_base; static irqreturn_t jz4740_cascade(int irq, void *data) { + struct ingenic_intc_data *intc = irq_get_handler_data(irq); uint32_t irq_reg; - irq_reg = readl(jz_intc_base + JZ_REG_INTC_PENDING); + irq_reg = readl(intc->base + JZ_REG_INTC_PENDING); if (irq_reg) generic_handle_irq(__fls(irq_reg) + JZ4740_IRQ_BASE); @@ -80,21 +83,34 @@ static struct irqaction jz4740_cascade_action = { static int __init jz4740_intc_of_init(struct device_node *node, struct device_node *parent) { + struct ingenic_intc_data *intc; struct irq_chip_generic *gc; struct irq_chip_type *ct; struct irq_domain *domain; - int parent_irq; + int parent_irq, err = 0; + + intc = kzalloc(sizeof(*intc), GFP_KERNEL); + if (!intc) { + err = -ENOMEM; + goto out_err; + } parent_irq = irq_of_parse_and_map(node, 0); - if (!parent_irq) - return -EINVAL; + if (!parent_irq) { + err = -EINVAL; + goto out_free; + } - jz_intc_base = ioremap(JZ4740_INTC_BASE_ADDR, 0x14); + err = irq_set_handler_data(parent_irq, intc); + if (err) + goto out_unmap_irq; + + intc->base = ioremap(JZ4740_INTC_BASE_ADDR, 0x14); /* Mask all irqs */ - writel(0xffffffff, jz_intc_base + JZ_REG_INTC_SET_MASK); + writel(0xffffffff, intc->base + JZ_REG_INTC_SET_MASK); - gc = irq_alloc_generic_chip("INTC", 1, JZ4740_IRQ_BASE, jz_intc_base, + gc = irq_alloc_generic_chip("INTC", 1, JZ4740_IRQ_BASE, intc->base, handle_level_irq); gc->wake_enabled = IRQ_MSK(32); @@ -118,5 +134,12 @@ static int __init jz4740_intc_of_init(struct device_node *node, setup_irq(parent_irq, &jz4740_cascade_action); return 0; + +out_unmap_irq: + irq_dispose_mapping(parent_irq); +out_free: + kfree(intc); +out_err: + return err; } IRQCHIP_DECLARE(jz4740_intc, "ingenic,jz4740-intc", jz4740_intc_of_init); |