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Commit affcab32 authored by Dmitry Eremin-Solenikov's avatar Dmitry Eremin-Solenikov Committed by Russell King
Browse files

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: default avatarDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Tested-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent f114040e

arch/arm/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -703,6 +703,7 @@ config ARCH_SA1100 
	select GENERIC_CLOCKEVENTS

	select HAVE_IDE

	select ISA

	select MULTI_IRQ_HANDLER

	select NEED_MACH_MEMORY_H

	select SPARSE_IRQ

	help

arch/arm/mach-sa1100/irq.c

+20 −0
Original line number Diff line number Diff line
@@ -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 @@ static int __init sa1100irq_init_devicefs(void) 


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 @@ void __init sa1100_init_irq(void) 
	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();

}