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ARM: davinci: aintc: use irq domain

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We need to create an irq domain if we want to select SPARSE_IRQ. The
cp-intc driver already supports it, but aintc doesn't. Use the helpers
provided by the generic irq chip abstraction.

Reviewed-by: David Lechner <david@lechnology.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
Bartosz Golaszewski 2019-02-14 15:51:57 +01:00 committed by Sekhar Nori
parent a3124c00d5
commit 74b0eac242
1 changed files with 27 additions and 8 deletions
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35
arch/arm/mach-davinci/irq.c
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@ -23,6 +23,7 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/irqdomain.h>
#include <mach/hardware.h>
#include <mach/cputype.h>
@ -40,23 +41,23 @@
#define IRQ_INTPRI0_REG_OFFSET 0x0030
#define IRQ_INTPRI7_REG_OFFSET 0x004C
static struct irq_domain *davinci_irq_domain;
static inline void davinci_irq_writel(unsigned long value, int offset)
{
__raw_writel(value, davinci_intc_base + offset);
}
static __init void
davinci_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
davinci_irq_setup_gc(void __iomem *base,
unsigned int irq_start, unsigned int num)
{
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
gc = irq_alloc_generic_chip("AINTC", 1, irq_start, base, handle_edge_irq);
if (!gc) {
pr_err("%s: irq_alloc_generic_chip for IRQ %u failed\n",
__func__, irq_start);
return;
}
gc = irq_get_domain_generic_chip(davinci_irq_domain, irq_start);
gc->reg_base = base;
gc->irq_base = irq_start;
ct = gc->chip_types;
ct->chip.irq_ack = irq_gc_ack_set_bit;
@ -74,6 +75,7 @@ void __init davinci_irq_init(void)
{
unsigned i, j;
const u8 *davinci_def_priorities = davinci_soc_info.intc_irq_prios;
int ret, irq_base;
davinci_intc_type = DAVINCI_INTC_TYPE_AINTC;
davinci_intc_base = ioremap(davinci_soc_info.intc_base, SZ_4K);
@ -110,8 +112,25 @@ void __init davinci_irq_init(void)
davinci_irq_writel(pri, i);
}
irq_base = irq_alloc_descs(-1, 0, davinci_soc_info.intc_irq_num, 0);
if (WARN_ON(irq_base < 0))
return;
davinci_irq_domain = irq_domain_add_legacy(NULL,
davinci_soc_info.intc_irq_num,
irq_base, 0, &irq_domain_simple_ops,
NULL);
if (WARN_ON(!davinci_irq_domain))
return;
ret = irq_alloc_domain_generic_chips(davinci_irq_domain, 32, 1,
"AINTC", handle_edge_irq,
IRQ_NOREQUEST | IRQ_NOPROBE, 0, 0);
if (WARN_ON(ret))
return;
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);
davinci_irq_setup_gc(davinci_intc_base + j, irq_base + i, 32);
irq_set_handler(IRQ_TINT1_TINT34, handle_level_irq);
}