blob: f86b450cb93c86daf0923f7fdbf086e17df16ebd (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/*
* linux/arch/arm/mach-mmp/irq.c
*
* Generic IRQ handling, GPIO IRQ demultiplexing, etc.
*
* Author: Bin Yang <bin.yang@marvell.com>
* Created: Sep 30, 2008
* Copyright: Marvell International Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <mach/regs-icu.h>
#include "common.h"
#define IRQ_ROUTE_TO_AP (ICU_INT_CONF_AP_INT | ICU_INT_CONF_IRQ)
#define PRIORITY_DEFAULT 0x1
#define PRIORITY_NONE 0x0 /* means IRQ disabled */
static void icu_mask_irq(struct irq_data *d)
{
__raw_writel(PRIORITY_NONE, ICU_INT_CONF(d->irq));
}
static void icu_unmask_irq(struct irq_data *d)
{
__raw_writel(IRQ_ROUTE_TO_AP | PRIORITY_DEFAULT, ICU_INT_CONF(d->irq));
}
static struct irq_chip icu_irq_chip = {
.name = "icu_irq",
.irq_ack = icu_mask_irq,
.irq_mask = icu_mask_irq,
.irq_unmask = icu_unmask_irq,
};
void __init icu_init_irq(void)
{
int irq;
for (irq = 0; irq < 64; irq++) {
icu_mask_irq(irq_get_irq_data(irq));
set_irq_chip(irq, &icu_irq_chip);
set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
}
|
