diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/irqchip/exynos-combiner.c | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c index d8683836ee1e..7fcdeee869ce 100644 --- a/drivers/irqchip/exynos-combiner.c +++ b/drivers/irqchip/exynos-combiner.c @@ -12,6 +12,7 @@ #include <linux/export.h> #include <linux/init.h> #include <linux/io.h> +#include <linux/slab.h> #include <linux/irqdomain.h> #include <linux/of_address.h> #include <linux/of_irq.h> @@ -37,7 +38,6 @@ struct combiner_chip_data { }; 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) { @@ -114,26 +114,26 @@ static struct irq_chip combiner_chip = { #endif }; -static void __init combiner_cascade_irq(unsigned int combiner_nr, +static void __init combiner_cascade_irq(struct combiner_chip_data *combiner_data, unsigned int irq) { - if (irq_set_handler_data(irq, &combiner_data[combiner_nr]) != 0) + if (irq_set_handler_data(irq, combiner_data) != 0) BUG(); irq_set_chained_handler(irq, combiner_handle_cascade_irq); } -static void __init combiner_init_one(unsigned int combiner_nr, +static void __init combiner_init_one(struct combiner_chip_data *combiner_data, + unsigned int combiner_nr, void __iomem *base, unsigned int irq) { - combiner_data[combiner_nr].base = base; - combiner_data[combiner_nr].irq_offset = irq_find_mapping( + combiner_data->base = base; + combiner_data->irq_offset = irq_find_mapping( combiner_irq_domain, combiner_nr * IRQ_IN_COMBINER); - combiner_data[combiner_nr].irq_mask = 0xff << ((combiner_nr % 4) << 3); - combiner_data[combiner_nr].parent_irq = irq; + combiner_data->irq_mask = 0xff << ((combiner_nr % 4) << 3); + combiner_data->parent_irq = irq; /* Disable all interrupts */ - __raw_writel(combiner_data[combiner_nr].irq_mask, - base + COMBINER_ENABLE_CLEAR); + __raw_writel(combiner_data->irq_mask, base + COMBINER_ENABLE_CLEAR); } #ifdef CONFIG_OF @@ -168,6 +168,8 @@ static int combiner_irq_domain_xlate(struct irq_domain *d, static int combiner_irq_domain_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw) { + struct combiner_chip_data *combiner_data = d->host_data; + 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); @@ -202,6 +204,7 @@ void __init combiner_init(void __iomem *combiner_base, { int i, irq, irq_base; unsigned int nr_irq; + struct combiner_chip_data *combiner_data; nr_irq = max_nr * IRQ_IN_COMBINER; @@ -211,8 +214,14 @@ void __init combiner_init(void __iomem *combiner_base, pr_warning("%s: irq desc alloc failed. Continuing with %d as linux irq base\n", __func__, irq_base); } + combiner_data = kcalloc(max_nr, sizeof (*combiner_data), GFP_KERNEL); + if (!combiner_data) { + pr_warning("%s: could not allocate combiner data\n", __func__); + return; + } + combiner_irq_domain = irq_domain_add_legacy(np, nr_irq, irq_base, 0, - &combiner_irq_domain_ops, &combiner_data); + &combiner_irq_domain_ops, combiner_data); if (WARN_ON(!combiner_irq_domain)) { pr_warning("%s: irq domain init failed\n", __func__); return; @@ -227,8 +236,9 @@ void __init combiner_init(void __iomem *combiner_base, if (np) irq = irq_of_parse_and_map(np, i); #endif - combiner_init_one(i, combiner_base + (i >> 2) * 0x10, irq); - combiner_cascade_irq(i, irq); + combiner_init_one(&combiner_data[i], i, + combiner_base + (i >> 2) * 0x10, irq); + combiner_cascade_irq(&combiner_data[i], irq); } } |