mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 21:50:53 +07:00
56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
/*
|
|
* 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(unsigned int irq)
|
|
{
|
|
__raw_writel(PRIORITY_NONE, ICU_INT_CONF(irq));
|
|
}
|
|
|
|
static void icu_unmask_irq(unsigned int irq)
|
|
{
|
|
__raw_writel(IRQ_ROUTE_TO_AP | PRIORITY_DEFAULT, ICU_INT_CONF(irq));
|
|
}
|
|
|
|
static struct irq_chip icu_irq_chip = {
|
|
.name = "icu_irq",
|
|
.ack = icu_mask_irq,
|
|
.mask = icu_mask_irq,
|
|
.unmask = icu_unmask_irq,
|
|
};
|
|
|
|
void __init icu_init_irq(void)
|
|
{
|
|
int irq;
|
|
|
|
for (irq = 0; irq < 64; irq++) {
|
|
icu_mask_irq(irq);
|
|
set_irq_chip(irq, &icu_irq_chip);
|
|
set_irq_handler(irq, handle_level_irq);
|
|
set_irq_flags(irq, IRQF_VALID);
|
|
}
|
|
}
|