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ARC: Prepare interrupt code for external controllers

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This patch adds some room for CPU-external interrupt controllers in the
Linux interrupt space. Until now, only the 32 CPU internal interrupt lines
were supported which does not allow for external interrupt controllers such
as GPIO modules etc.

Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Pierrick Hascoet <pierrick.hascoet@abilis.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Christian Ruppert 2013-04-11 15:19:39 +02:00 committed by Vineet Gupta
parent c93d8b8c78
commit a37cdacc9b
2 changed files with 3 additions and 2 deletions
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3
arch/arc/include/asm/irq.h
View file

@ -9,7 +9,8 @@
#ifndef __ASM_ARC_IRQ_H
#define __ASM_ARC_IRQ_H
#define NR_IRQS 32
#define NR_CPU_IRQS 32 /* number of interrupt lines of ARC770 CPU */
#define NR_IRQS 128 /* allow some CPU external IRQ handling */
/* Platform Independent IRQs */
#define TIMER0_IRQ 3

2
arch/arc/kernel/irq.c
View file

@ -105,7 +105,7 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
if (parent)
panic("DeviceTree incore intc not a root irq controller\n");
root_domain = irq_domain_add_legacy(intc, NR_IRQS, 0, 0,
root_domain = irq_domain_add_legacy(intc, NR_CPU_IRQS, 0, 0,
&arc_intc_domain_ops, NULL);
if (!root_domain)