ARM: 8227/1: sa1100: switch to MULTI_IRQ_HANDLER
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>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 89c4b5c..2f3f132 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -703,6 +703,7 @@
select GENERIC_CLOCKEVENTS
select HAVE_IDE
select ISA
+ select MULTI_IRQ_HANDLER
select NEED_MACH_MEMORY_H
select SPARSE_IRQ
help
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
index 2124f1fc..4a1bd5e 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -20,6 +20,7 @@
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <asm/mach/irq.h>
+#include <asm/exception.h>
#include "generic.h"
@@ -291,6 +292,23 @@
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)
{
unsigned int irq;
@@ -338,5 +356,7 @@
irq_set_chip(IRQ_GPIO11_27, &sa1100_normal_chip);
irq_set_chained_handler(IRQ_GPIO11_27, sa1100_high_gpio_handler);
+ set_handle_irq(sa1100_handle_irq);
+
sa1100_init_gpio();
}