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path: root/drivers/irqchip/irq-sirfsoc.c
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Diffstat (limited to 'drivers/irqchip/irq-sirfsoc.c')
-rw-r--r--drivers/irqchip/irq-sirfsoc.c50
1 files changed, 26 insertions, 24 deletions
diff --git a/drivers/irqchip/irq-sirfsoc.c b/drivers/irqchip/irq-sirfsoc.c
index a469355..10cb21b 100644
--- a/drivers/irqchip/irq-sirfsoc.c
+++ b/drivers/irqchip/irq-sirfsoc.c
@@ -11,40 +11,44 @@
#include <linux/irq.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/irqchip.h>
#include <linux/irqdomain.h>
#include <linux/syscore_ops.h>
#include <asm/mach/irq.h>
#include <asm/exception.h>
-#include "irqchip.h"
-#define SIRFSOC_INT_RISC_MASK0 0x0018
-#define SIRFSOC_INT_RISC_MASK1 0x001C
-#define SIRFSOC_INT_RISC_LEVEL0 0x0020
-#define SIRFSOC_INT_RISC_LEVEL1 0x0024
+#define SIRFSOC_INT_RISC_MASK0 0x0018
+#define SIRFSOC_INT_RISC_MASK1 0x001C
+#define SIRFSOC_INT_RISC_LEVEL0 0x0020
+#define SIRFSOC_INT_RISC_LEVEL1 0x0024
#define SIRFSOC_INIT_IRQ_ID 0x0038
+#define SIRFSOC_INT_BASE_OFFSET 0x0004
#define SIRFSOC_NUM_IRQS 64
+#define SIRFSOC_NUM_BANKS (SIRFSOC_NUM_IRQS / 32)
static struct irq_domain *sirfsoc_irqdomain;
-static __init void
-sirfsoc_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
+static __init void sirfsoc_alloc_gc(void __iomem *base)
{
- struct irq_chip_generic *gc;
- struct irq_chip_type *ct;
- int ret;
unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
unsigned int set = IRQ_LEVEL;
-
- ret = irq_alloc_domain_generic_chips(sirfsoc_irqdomain, num, 1, "irq_sirfsoc",
- handle_level_irq, clr, set, IRQ_GC_INIT_MASK_CACHE);
-
- gc = irq_get_domain_generic_chip(sirfsoc_irqdomain, irq_start);
- gc->reg_base = base;
- ct = gc->chip_types;
- ct->chip.irq_mask = irq_gc_mask_clr_bit;
- ct->chip.irq_unmask = irq_gc_mask_set_bit;
- ct->regs.mask = SIRFSOC_INT_RISC_MASK0;
+ struct irq_chip_generic *gc;
+ struct irq_chip_type *ct;
+ int i;
+
+ irq_alloc_domain_generic_chips(sirfsoc_irqdomain, 32, 1, "irq_sirfsoc",
+ handle_level_irq, clr, set,
+ IRQ_GC_INIT_MASK_CACHE);
+
+ for (i = 0; i < SIRFSOC_NUM_BANKS; i++) {
+ gc = irq_get_domain_generic_chip(sirfsoc_irqdomain, i * 32);
+ gc->reg_base = base + i * SIRFSOC_INT_BASE_OFFSET;
+ ct = gc->chip_types;
+ ct->chip.irq_mask = irq_gc_mask_clr_bit;
+ ct->chip.irq_unmask = irq_gc_mask_set_bit;
+ ct->regs.mask = SIRFSOC_INT_RISC_MASK0;
+ }
}
static void __exception_irq_entry sirfsoc_handle_irq(struct pt_regs *regs)
@@ -64,10 +68,8 @@ static int __init sirfsoc_irq_init(struct device_node *np,
panic("unable to map intc cpu registers\n");
sirfsoc_irqdomain = irq_domain_add_linear(np, SIRFSOC_NUM_IRQS,
- &irq_generic_chip_ops, base);
-
- sirfsoc_alloc_gc(base, 0, 32);
- sirfsoc_alloc_gc(base + 4, 32, SIRFSOC_NUM_IRQS - 32);
+ &irq_generic_chip_ops, base);
+ sirfsoc_alloc_gc(base);
writel_relaxed(0, base + SIRFSOC_INT_RISC_LEVEL0);
writel_relaxed(0, base + SIRFSOC_INT_RISC_LEVEL1);