1 files changed, 5 insertions, 218 deletions

diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 0c7e3ad7ba93..d63d399c7bae 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -12,6 +12,7 @@
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/irqchip.h>
 #include <linux/io.h>
 #include <linux/device.h>
 #include <linux/gpio.h>
@@ -22,12 +23,13 @@
 #include <linux/of_irq.h>
 #include <linux/export.h>
 #include <linux/irqdomain.h>
+#include <linux/irqchip.h>
 #include <linux/of_address.h>
+#include <linux/irqchip/arm-gic.h>
 
 #include <asm/proc-fns.h>
 #include <asm/exception.h>
 #include <asm/hardware/cache-l2x0.h>
-#include <asm/hardware/gic.h>
 #include <asm/mach/map.h>
 #include <asm/mach/irq.h>
 #include <asm/cacheflush.h>
@@ -35,7 +37,6 @@
 #include <mach/regs-irq.h>
 #include <mach/regs-pmu.h>
 #include <mach/regs-gpio.h>
-#include <mach/pmu.h>
 
 #include <plat/cpu.h>
 #include <plat/clock.h>
@@ -440,220 +441,6 @@ static void __init exynos5_init_clocks(int xtal)
 #endif
 }
 
-#define COMBINER_ENABLE_SET     0x0
-#define COMBINER_ENABLE_CLEAR   0x4
-#define COMBINER_INT_STATUS     0xC
-
-static DEFINE_SPINLOCK(irq_controller_lock);
-
-struct combiner_chip_data {
-        unsigned int irq_offset;
-        unsigned int irq_mask;
-        void __iomem *base;
-};
-
-static struct irq_domain *combiner_irq_domain;
-static struct combiner_chip_data combiner_data[MAX_COMBINER_NR];
-
-static inline void __iomem *combiner_base(struct irq_data *data)
-{
-        struct combiner_chip_data *combiner_data =
-                irq_data_get_irq_chip_data(data);
-
-        return combiner_data->base;
-}
-
-static void combiner_mask_irq(struct irq_data *data)
-{
-        u32 mask = 1 << (data->hwirq % 32);
-
-        __raw_writel(mask, combiner_base(data) + COMBINER_ENABLE_CLEAR);
-}
-
-static void combiner_unmask_irq(struct irq_data *data)
-{
-        u32 mask = 1 << (data->hwirq % 32);
-
-        __raw_writel(mask, combiner_base(data) + COMBINER_ENABLE_SET);
-}
-
-static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
-{
-        struct combiner_chip_data *chip_data = irq_get_handler_data(irq);
-        struct irq_chip *chip = irq_get_chip(irq);
-        unsigned int cascade_irq, combiner_irq;
-        unsigned long status;
-
-        chained_irq_enter(chip, desc);
-
-        spin_lock(&irq_controller_lock);
-        status = __raw_readl(chip_data->base + COMBINER_INT_STATUS);
-        spin_unlock(&irq_controller_lock);
-        status &= chip_data->irq_mask;
-
-        if (status == 0)
-                goto out;
-
-        combiner_irq = __ffs(status);
-
-        cascade_irq = combiner_irq + (chip_data->irq_offset & ~31);
-        if (unlikely(cascade_irq >= NR_IRQS))
-                do_bad_IRQ(cascade_irq, desc);
-        else
-                generic_handle_irq(cascade_irq);
-
- out:
-        chained_irq_exit(chip, desc);
-}
-
-static struct irq_chip combiner_chip = {
-        .name           = "COMBINER",
-        .irq_mask       = combiner_mask_irq,
-        .irq_unmask     = combiner_unmask_irq,
-};
-
-static void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq)
-{
-        unsigned int max_nr;
-
-        if (soc_is_exynos5250())
-                max_nr = EXYNOS5_MAX_COMBINER_NR;
-        else
-                max_nr = EXYNOS4_MAX_COMBINER_NR;
-
-        if (combiner_nr >= max_nr)
-                BUG();
-        if (irq_set_handler_data(irq, &combiner_data[combiner_nr]) != 0)
-                BUG();
-        irq_set_chained_handler(irq, combiner_handle_cascade_irq);
-}
-
-static void __init combiner_init_one(unsigned int combiner_nr,
-                                     void __iomem *base)
-{
-        combiner_data[combiner_nr].base = base;
-        combiner_data[combiner_nr].irq_offset = irq_find_mapping(
-                combiner_irq_domain, combiner_nr * MAX_IRQ_IN_COMBINER);
-        combiner_data[combiner_nr].irq_mask = 0xff << ((combiner_nr % 4) << 3);
-
-        /* Disable all interrupts */
-        __raw_writel(combiner_data[combiner_nr].irq_mask,
-                     base + COMBINER_ENABLE_CLEAR);
-}
-
-#ifdef CONFIG_OF
-static int combiner_irq_domain_xlate(struct irq_domain *d,
-                                     struct device_node *controller,
-                                     const u32 *intspec, unsigned int intsize,
-                                     unsigned long *out_hwirq,
-                                     unsigned int *out_type)
-{
-        if (d->of_node != controller)
-                return -EINVAL;
-
-        if (intsize < 2)
-                return -EINVAL;
-
-        *out_hwirq = intspec[0] * MAX_IRQ_IN_COMBINER + intspec[1];
-        *out_type = 0;
-
-        return 0;
-}
-#else
-static int combiner_irq_domain_xlate(struct irq_domain *d,
-                                     struct device_node *controller,
-                                     const u32 *intspec, unsigned int intsize,
-                                     unsigned long *out_hwirq,
-                                     unsigned int *out_type)
-{
-        return -EINVAL;
-}
-#endif
-
-static int combiner_irq_domain_map(struct irq_domain *d, unsigned int irq,
-                                   irq_hw_number_t hw)
-{
-        irq_set_chip_and_handler(irq, &combiner_chip, handle_level_irq);
-        irq_set_chip_data(irq, &combiner_data[hw >> 3]);
-        set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
-
-        return 0;
-}
-
-static struct irq_domain_ops combiner_irq_domain_ops = {
-        .xlate  = combiner_irq_domain_xlate,
-        .map    = combiner_irq_domain_map,
-};
-
-static void __init combiner_init(void __iomem *combiner_base,
-                                 struct device_node *np)
-{
-        int i, irq, irq_base;
-        unsigned int max_nr, nr_irq;
-
-        if (np) {
-                if (of_property_read_u32(np, "samsung,combiner-nr", &max_nr)) {
-                        pr_warning("%s: number of combiners not specified, "
-                                "setting default as %d.\n",
-                                __func__, EXYNOS4_MAX_COMBINER_NR);
-                        max_nr = EXYNOS4_MAX_COMBINER_NR;
-                }
-        } else {
-                max_nr = soc_is_exynos5250() ? EXYNOS5_MAX_COMBINER_NR :
-                                                EXYNOS4_MAX_COMBINER_NR;
-        }
-        nr_irq = max_nr * MAX_IRQ_IN_COMBINER;
-
-        irq_base = irq_alloc_descs(COMBINER_IRQ(0, 0), 1, nr_irq, 0);
-        if (IS_ERR_VALUE(irq_base)) {
-                irq_base = COMBINER_IRQ(0, 0);
-                pr_warning("%s: irq desc alloc failed. Continuing with %d as linux irq base\n", __func__, irq_base);
-        }
-
-        combiner_irq_domain = irq_domain_add_legacy(np, nr_irq, irq_base, 0,
-                                &combiner_irq_domain_ops, &combiner_data);
-        if (WARN_ON(!combiner_irq_domain)) {
-                pr_warning("%s: irq domain init failed\n", __func__);
-                return;
-        }
-
-        for (i = 0; i < max_nr; i++) {
-                combiner_init_one(i, combiner_base + (i >> 2) * 0x10);
-                irq = IRQ_SPI(i);
-#ifdef CONFIG_OF
-                if (np)
-                        irq = irq_of_parse_and_map(np, i);
-#endif
-                combiner_cascade_irq(i, irq);
-        }
-}
-
-#ifdef CONFIG_OF
-static int __init combiner_of_init(struct device_node *np,
-                                   struct device_node *parent)
-{
-        void __iomem *combiner_base;
-
-        combiner_base = of_iomap(np, 0);
-        if (!combiner_base) {
-                pr_err("%s: failed to map combiner registers\n", __func__);
-                return -ENXIO;
-        }
-
-        combiner_init(combiner_base, np);
-
-        return 0;
-}
-
-static const struct of_device_id exynos_dt_irq_match[] = {
-        { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
-        { .compatible = "arm,cortex-a15-gic", .data = gic_of_init, },
-        { .compatible = "samsung,exynos4210-combiner",
-                        .data = combiner_of_init, },
-        {},
-};
-#endif
-
 void __init exynos4_init_irq(void)
 {
         unsigned int gic_bank_offset;
@@ -664,7 +451,7 @@ void __init exynos4_init_irq(void)
                 gic_init_bases(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU, gic_bank_offset, NULL);
 #ifdef CONFIG_OF
         else
-                of_irq_init(exynos_dt_irq_match);
+                irqchip_init();
 #endif
 
         if (!of_have_populated_dt())
@@ -681,7 +468,7 @@ void __init exynos4_init_irq(void)
 void __init exynos5_init_irq(void)
 {
 #ifdef CONFIG_OF
-        of_irq_init(exynos_dt_irq_match);
+        irqchip_init();
 #endif
         /*
          * The parameters of s5p_init_irq() are for VIC init.