summaryrefslogtreecommitdiff
path: root/arch/arm/mach-ns9xxx/irq.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-ns9xxx/irq.c')
-rw-r--r--arch/arm/mach-ns9xxx/irq.c74
1 files changed, 0 insertions, 74 deletions
diff --git a/arch/arm/mach-ns9xxx/irq.c b/arch/arm/mach-ns9xxx/irq.c
deleted file mode 100644
index 37ab0a2b83ad..000000000000
--- a/arch/arm/mach-ns9xxx/irq.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * arch/arm/mach-ns9xxx/irq.c
- *
- * Copyright (C) 2006,2007 by Digi International Inc.
- * All rights reserved.
- *
- * 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/interrupt.h>
-#include <linux/kernel_stat.h>
-#include <linux/io.h>
-#include <asm/mach/irq.h>
-#include <mach/regs-sys-common.h>
-#include <mach/irqs.h>
-#include <mach/board.h>
-
-#include "generic.h"
-
-/* simple interrupt prio table: prio(x) < prio(y) <=> x < y */
-#define irq2prio(i) (i)
-#define prio2irq(p) (p)
-
-static void ns9xxx_mask_irq(struct irq_data *d)
-{
- /* XXX: better use cpp symbols */
- int prio = irq2prio(d->irq);
- u32 ic = __raw_readl(SYS_IC(prio / 4));
- ic &= ~(1 << (7 + 8 * (3 - (prio & 3))));
- __raw_writel(ic, SYS_IC(prio / 4));
-}
-
-static void ns9xxx_eoi_irq(struct irq_data *d)
-{
- __raw_writel(0, SYS_ISRADDR);
-}
-
-static void ns9xxx_unmask_irq(struct irq_data *d)
-{
- /* XXX: better use cpp symbols */
- int prio = irq2prio(d->irq);
- u32 ic = __raw_readl(SYS_IC(prio / 4));
- ic |= 1 << (7 + 8 * (3 - (prio & 3)));
- __raw_writel(ic, SYS_IC(prio / 4));
-}
-
-static struct irq_chip ns9xxx_chip = {
- .irq_eoi = ns9xxx_eoi_irq,
- .irq_mask = ns9xxx_mask_irq,
- .irq_unmask = ns9xxx_unmask_irq,
-};
-
-void __init ns9xxx_init_irq(void)
-{
- int i;
-
- /* disable all IRQs */
- for (i = 0; i < 8; ++i)
- __raw_writel(prio2irq(4 * i) << 24 |
- prio2irq(4 * i + 1) << 16 |
- prio2irq(4 * i + 2) << 8 |
- prio2irq(4 * i + 3),
- SYS_IC(i));
-
- for (i = 0; i < 32; ++i)
- __raw_writel(prio2irq(i), SYS_IVA(i));
-
- for (i = 0; i <= 31; ++i) {
- irq_set_chip_and_handler(i, &ns9xxx_chip, handle_fasteoi_irq);
- set_irq_flags(i, IRQF_VALID);
- irq_set_status_flags(i, IRQ_LEVEL);
- }
-}