diff options
Diffstat (limited to 'arch/arm/mach-omap2/irq.c')
| -rw-r--r-- | arch/arm/mach-omap2/irq.c | 47 |
1 files changed, 33 insertions, 14 deletions
diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c index 6038a8c84b7..35b8590c322 100644 --- a/arch/arm/mach-omap2/irq.c +++ b/arch/arm/mach-omap2/irq.c @@ -21,9 +21,9 @@ #include <linux/irqdomain.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/of_irq.h> -#include <mach/hardware.h> - +#include "soc.h" #include "iomap.h" #include "common.h" @@ -48,6 +48,8 @@ #define OMAP3_IRQ_BASE OMAP2_L4_IO_ADDRESS(OMAP34XX_IC_BASE) #define INTCPS_SIR_IRQ_OFFSET 0x0040 /* omap2/3 active interrupt offset */ #define ACTIVEIRQ_MASK 0x7f /* omap2/3 active interrupt bits */ +#define INTCPS_NR_MIR_REGS 3 +#define INTCPS_NR_IRQS 96 /* * OMAP2 has a number of different interrupt controllers, each interrupt @@ -81,12 +83,12 @@ struct omap3_intc_regs { static void intc_bank_write_reg(u32 val, struct omap_irq_bank *bank, u16 reg) { - __raw_writel(val, bank->base_reg + reg); + writel_relaxed(val, bank->base_reg + reg); } static u32 intc_bank_read_reg(struct omap_irq_bank *bank, u16 reg) { - return __raw_readl(bank->base_reg + reg); + return readl_relaxed(bank->base_reg + reg); } /* XXX: FIQ and additional INTC support (only MPU at the moment) */ @@ -106,9 +108,8 @@ static void __init omap_irq_bank_init_one(struct omap_irq_bank *bank) unsigned long tmp; tmp = intc_bank_read_reg(bank, INTC_REVISION) & 0xff; - printk(KERN_INFO "IRQ: Found an INTC at 0x%p " - "(revision %ld.%ld) with %d interrupts\n", - bank->base_reg, tmp >> 4, tmp & 0xf, bank->nr_irqs); + pr_info("IRQ: Found an INTC at 0x%p (revision %ld.%ld) with %d interrupts\n", + bank->base_reg, tmp >> 4, tmp & 0xf, bank->nr_irqs); tmp = intc_bank_read_reg(bank, INTC_SYSCONFIG); tmp |= 1 << 1; /* soft reset */ @@ -221,6 +222,7 @@ void __init ti81xx_init_irq(void) static inline void omap_intc_handle_irq(void __iomem *base_addr, struct pt_regs *regs) { u32 irqnr; + int handled_irq = 0; do { irqnr = readl_relaxed(base_addr + 0x98); @@ -232,7 +234,7 @@ static inline void omap_intc_handle_irq(void __iomem *base_addr, struct pt_regs goto out; irqnr = readl_relaxed(base_addr + 0xd8); -#ifdef CONFIG_SOC_TI81XX +#if IS_ENABLED(CONFIG_SOC_TI81XX) || IS_ENABLED(CONFIG_SOC_AM33XX) if (irqnr) goto out; irqnr = readl_relaxed(base_addr + 0xf8); @@ -248,8 +250,15 @@ out: if (irqnr) { irqnr = irq_find_mapping(domain, irqnr); handle_IRQ(irqnr, regs); + handled_irq = 1; } } while (irqnr); + + /* If an irq is masked or deasserted while active, we will + * keep ending up here with no irq handled. So remove it from + * the INTC with an ack.*/ + if (!handled_irq) + omap_ack_irq(NULL); } asmlinkage void __exception_irq_entry omap2_intc_handle_irq(struct pt_regs *regs) @@ -258,11 +267,11 @@ asmlinkage void __exception_irq_entry omap2_intc_handle_irq(struct pt_regs *regs omap_intc_handle_irq(base_addr, regs); } -int __init omap_intc_of_init(struct device_node *node, +int __init intc_of_init(struct device_node *node, struct device_node *parent) { struct resource res; - u32 nr_irqs = 96; + u32 nr_irq = 96; if (WARN_ON(!node)) return -ENODEV; @@ -272,15 +281,25 @@ int __init omap_intc_of_init(struct device_node *node, return -EINVAL; } - if (of_property_read_u32(node, "ti,intc-size", &nr_irqs)) - pr_warn("unable to get intc-size, default to %d\n", nr_irqs); + if (of_property_read_u32(node, "ti,intc-size", &nr_irq)) + pr_warn("unable to get intc-size, default to %d\n", nr_irq); - omap_init_irq(res.start, nr_irqs, of_node_get(node)); + omap_init_irq(res.start, nr_irq, of_node_get(node)); return 0; } -#ifdef CONFIG_ARCH_OMAP3 +static struct of_device_id irq_match[] __initdata = { + { .compatible = "ti,omap2-intc", .data = intc_of_init, }, + { } +}; + +void __init omap_intc_of_init(void) +{ + of_irq_init(irq_match); +} + +#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_SOC_AM33XX) static struct omap3_intc_regs intc_context[ARRAY_SIZE(irq_banks)]; void omap_intc_save_context(void) |