1/*
 2 * r8a7779 processor support - INTC hardware block
 3 *
 4 * Copyright (C) 2011  Renesas Solutions Corp.
 5 * Copyright (C) 2011  Magnus Damm
 6 *
 7 * This program is free software; you can redistribute it and/or modify
 8 * it under the terms of the GNU General Public License as published by
 9 * the Free Software Foundation; version 2 of the License.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
19 */
20#include <linux/kernel.h>
21#include <linux/init.h>
22#include <linux/interrupt.h>
23#include <linux/irq.h>
24#include <linux/io.h>
25#include <mach/common.h>
26#include <mach/intc.h>
27#include <mach/r8a7779.h>
28#include <asm/hardware/gic.h>
29#include <asm/mach-types.h>
30#include <asm/mach/arch.h>
31
32#define INT2SMSKCR0 0xfe7822a0
33#define INT2SMSKCR1 0xfe7822a4
34#define INT2SMSKCR2 0xfe7822a8
35#define INT2SMSKCR3 0xfe7822ac
36#define INT2SMSKCR4 0xfe7822b0
37
38#define INT2NTSR0 0xfe700060
39#define INT2NTSR1 0xfe700064
40
41static int r8a7779_set_wake(struct irq_data *data, unsigned int on)
42{
43	return 0; /* always allow wakeup */
44}
45
46void __init r8a7779_init_irq(void)
47{
48	void __iomem *gic_dist_base = IOMEM(0xf0001000);
49	void __iomem *gic_cpu_base = IOMEM(0xf0000100);
50
51	/* use GIC to handle interrupts */
52	gic_init(0, 29, gic_dist_base, gic_cpu_base);
53	gic_arch_extn.irq_set_wake = r8a7779_set_wake;
54
55	/* route all interrupts to ARM */
56	__raw_writel(0xffffffff, INT2NTSR0);
57	__raw_writel(0x3fffffff, INT2NTSR1);
58
59	/* unmask all known interrupts in INTCS2 */
60	__raw_writel(0xfffffff0, INT2SMSKCR0);
61	__raw_writel(0xfff7ffff, INT2SMSKCR1);
62	__raw_writel(0xfffbffdf, INT2SMSKCR2);
63	__raw_writel(0xbffffffc, INT2SMSKCR3);
64	__raw_writel(0x003fee3f, INT2SMSKCR4);
65}