1/*
2 * Shared support for SH-X3 interrupt controllers.
3 *
4 *  Copyright (C) 2009 - 2010  Paul Mundt
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License.  See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10#include <linux/irq.h>
11#include <linux/io.h>
12#include <linux/init.h>
13
14#define INTACK		0xfe4100b8
15#define INTACKCLR	0xfe4100bc
16#define INTC_USERIMASK	0xfe411000
17
18#ifdef CONFIG_INTC_BALANCING
19unsigned int irq_lookup(unsigned int irq)
20{
21	return __raw_readl(INTACK) & 1 ? irq : NO_IRQ_IGNORE;
22}
23
24void irq_finish(unsigned int irq)
25{
26	__raw_writel(irq2evt(irq), INTACKCLR);
27}
28#endif
29
30static int __init shx3_irq_setup(void)
31{
32	return register_intc_userimask(INTC_USERIMASK);
33}
34arch_initcall(shx3_irq_setup);
35