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arm: davinci: Use generic irq chip 

Simple conversion which simply uses the fact that the second irq chip
base address has offset 0x04 to the first one.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-and-Tested-by: Kevin Hilman <khilman@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
Thomas Gleixner 2011-04-15 11:19:57 +02:00 committed by Sekhar Nori
parent cfefd21e69
commit aac4dd1dab
1 changed files with 18 additions and 71 deletions
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89
arch/arm/mach-davinci/irq.c
View File

@ -29,8 +29,6 @@
#include <mach/common.h>
#include <asm/mach/irq.h>
#define IRQ_BIT(irq) ((irq) & 0x1f)
#define FIQ_REG0_OFFSET 0x0000
#define FIQ_REG1_OFFSET 0x0004
#define IRQ_REG0_OFFSET 0x0008
@ -42,78 +40,33 @@
#define IRQ_INTPRI0_REG_OFFSET 0x0030
#define IRQ_INTPRI7_REG_OFFSET 0x004C
static inline unsigned int davinci_irq_readl(int offset)
{
return __raw_readl(davinci_intc_base + offset);
}
static inline void davinci_irq_writel(unsigned long value, int offset)
{
__raw_writel(value, davinci_intc_base + offset);
}
/* Disable interrupt */
static void davinci_mask_irq(struct irq_data *d)
static __init void
davinci_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
{
unsigned int mask;
u32 l;
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
mask = 1 << IRQ_BIT(d->irq);
gc = irq_alloc_generic_chip("AINTC", 1, irq_start, base, handle_edge_irq);
ct = gc->chip_types;
ct->chip.irq_ack = irq_gc_ack;
ct->chip.irq_mask = irq_gc_mask_clr_bit;
ct->chip.irq_unmask = irq_gc_mask_set_bit;
if (d->irq > 31) {
l = davinci_irq_readl(IRQ_ENT_REG1_OFFSET);
l &= ~mask;
davinci_irq_writel(l, IRQ_ENT_REG1_OFFSET);
} else {
l = davinci_irq_readl(IRQ_ENT_REG0_OFFSET);
l &= ~mask;
davinci_irq_writel(l, IRQ_ENT_REG0_OFFSET);
}
ct->regs.ack = IRQ_REG0_OFFSET;
ct->regs.mask = IRQ_ENT_REG0_OFFSET;
irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
IRQ_NOREQUEST | IRQ_NOPROBE, 0);
}
/* Enable interrupt */
static void davinci_unmask_irq(struct irq_data *d)
{
unsigned int mask;
u32 l;
mask = 1 << IRQ_BIT(d->irq);
if (d->irq > 31) {
l = davinci_irq_readl(IRQ_ENT_REG1_OFFSET);
l |= mask;
davinci_irq_writel(l, IRQ_ENT_REG1_OFFSET);
} else {
l = davinci_irq_readl(IRQ_ENT_REG0_OFFSET);
l |= mask;
davinci_irq_writel(l, IRQ_ENT_REG0_OFFSET);
}
}
/* EOI interrupt */
static void davinci_ack_irq(struct irq_data *d)
{
unsigned int mask;
mask = 1 << IRQ_BIT(d->irq);
if (d->irq > 31)
davinci_irq_writel(mask, IRQ_REG1_OFFSET);
else
davinci_irq_writel(mask, IRQ_REG0_OFFSET);
}
static struct irq_chip davinci_irq_chip_0 = {
.name = "AINTC",
.irq_ack = davinci_ack_irq,
.irq_mask = davinci_mask_irq,
.irq_unmask = davinci_unmask_irq,
};
/* ARM Interrupt Controller Initialization */
void __init davinci_irq_init(void)
{
unsigned i;
unsigned i, j;
const u8 *davinci_def_priorities = davinci_soc_info.intc_irq_prios;
davinci_intc_type = DAVINCI_INTC_TYPE_AINTC;
@ -144,7 +97,6 @@ void __init davinci_irq_init(void)
davinci_irq_writel(~0x0, IRQ_REG1_OFFSET);
for (i = IRQ_INTPRI0_REG_OFFSET; i <= IRQ_INTPRI7_REG_OFFSET; i += 4) {
unsigned j;
u32 pri;
for (j = 0, pri = 0; j < 32; j += 4, davinci_def_priorities++)
@ -152,13 +104,8 @@ void __init davinci_irq_init(void)
davinci_irq_writel(pri, i);
}
/* set up genirq dispatch for ARM INTC */
for (i = 0; i < davinci_soc_info.intc_irq_num; i++) {
irq_set_chip(i, &davinci_irq_chip_0);
set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
if (i != IRQ_TINT1_TINT34)
irq_set_handler(i, handle_edge_irq);
else
irq_set_handler(i, handle_level_irq);
}
for (i = 0, j = 0; i < davinci_soc_info.intc_irq_num; i += 32, j += 0x04)
davinci_alloc_gc(davinci_intc_base + j, i, 32);
irq_set_handler(IRQ_TINT1_TINT34, handle_level_irq);
}