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 
r8a7779_set_wake(struct irq_data * data,unsigned int on)38 static int r8a7779_set_wake(struct irq_data *data, unsigned int on)
39 {
40 	return 0; /* always allow wakeup */
41 }
42 
r8a7779_init_irq(void)43 void __init r8a7779_init_irq(void)
44 {
45 	void __iomem *gic_dist_base = IOMEM(0xf0001000);
46 	void __iomem *gic_cpu_base = IOMEM(0xf0000100);
47 
48 	/* use GIC to handle interrupts */
49 	gic_init(0, 29, gic_dist_base, gic_cpu_base);
50 	gic_arch_extn.irq_set_wake = r8a7779_set_wake;
51 
52 	/* unmask all known interrupts in INTCS2 */
53 	__raw_writel(0xfffffff0, INT2SMSKCR0);
54 	__raw_writel(0xfff7ffff, INT2SMSKCR1);
55 	__raw_writel(0xfffbffdf, INT2SMSKCR2);
56 	__raw_writel(0xbffffffc, INT2SMSKCR3);
57 	__raw_writel(0x003fee3f, INT2SMSKCR4);
58 }
59