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ARM: 8227/1: sa1100: switch to MULTI_IRQ_HANDLER

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Add sa1100_handle_irq implementating handle_irq for sa1100 platform.
It is more or less a translation of old assembly code from assembler to
plain C. Also install this irq handler from sa1100_init_irq().

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Dmitry Eremin-Solenikov 2014-11-28 15:55:16 +01:00 • committed by Russell King
parent f114040e3e
commit affcab32e2
2 changed files with 21 additions and 0 deletions
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1
arch/arm/Kconfig
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@ -703,6 +703,7 @@ config ARCH_SA1100
select GENERIC_CLOCKEVENTS select GENERIC_CLOCKEVENTS
select HAVE_IDE select HAVE_IDE
select ISA select ISA
select MULTI_IRQ_HANDLER
select NEED_MACH_MEMORY_H select NEED_MACH_MEMORY_H
select SPARSE_IRQ select SPARSE_IRQ
help help

20
arch/arm/mach-sa1100/irq.c
View file

@ -20,6 +20,7 @@
#include <mach/hardware.h> #include <mach/hardware.h>
#include <mach/irqs.h> #include <mach/irqs.h>
#include <asm/mach/irq.h> #include <asm/mach/irq.h>
#include <asm/exception.h>
#include "generic.h" #include "generic.h"
@ -291,6 +292,23 @@ static int __init sa1100irq_init_devicefs(void)
device_initcall(sa1100irq_init_devicefs); device_initcall(sa1100irq_init_devicefs);
static asmlinkage void __exception_irq_entry
sa1100_handle_irq(struct pt_regs *regs)
{
uint32_t icip, icmr, mask;
do {
icip = (ICIP);
icmr = (ICMR);
mask = icip & icmr;
if (mask == 0)
break;
handle_IRQ(ffs(mask) - 1 + IRQ_GPIO0, regs);
} while (1);
}
void __init sa1100_init_irq(void) void __init sa1100_init_irq(void)
{ {
unsigned int irq; unsigned int irq;
@ -338,5 +356,7 @@ void __init sa1100_init_irq(void)
irq_set_chip(IRQ_GPIO11_27, &sa1100_normal_chip); irq_set_chip(IRQ_GPIO11_27, &sa1100_normal_chip);
irq_set_chained_handler(IRQ_GPIO11_27, sa1100_high_gpio_handler); irq_set_chained_handler(IRQ_GPIO11_27, sa1100_high_gpio_handler);
set_handle_irq(sa1100_handle_irq);
sa1100_init_gpio(); sa1100_init_gpio();
} }