diff options
Diffstat (limited to 'arch/arm/mach-ns9xxx/irq.c')
-rw-r--r-- | arch/arm/mach-ns9xxx/irq.c | 74 |
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 37ab0a2b83a..00000000000 --- 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); - } -} |