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Diffstat (limited to 'arch/arm/mach-iop3xx/iop321-irq.c')
-rw-r--r--arch/arm/mach-iop3xx/iop321-irq.c97
1 files changed, 0 insertions, 97 deletions
diff --git a/arch/arm/mach-iop3xx/iop321-irq.c b/arch/arm/mach-iop3xx/iop321-irq.c
deleted file mode 100644
index 88ac333472c..00000000000
--- a/arch/arm/mach-iop3xx/iop321-irq.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * linux/arch/arm/mach-iop3xx/iop321-irq.c
- *
- * Generic IOP321 IRQ handling functionality
- *
- * Author: Rory Bolt <rorybolt@pacbell.net>
- * Copyright (C) 2002 Rory Bolt
- *
- * 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.
- *
- * Added IOP3XX chipset and IQ80321 board masking code.
- *
- */
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/list.h>
-
-#include <asm/mach/irq.h>
-#include <asm/irq.h>
-#include <asm/hardware.h>
-
-#include <asm/mach-types.h>
-
-static u32 iop321_mask /* = 0 */;
-
-static inline void intctl_write(u32 val)
-{
- asm volatile("mcr p6,0,%0,c0,c0,0"::"r" (val));
-}
-
-static inline void intstr_write(u32 val)
-{
- asm volatile("mcr p6,0,%0,c4,c0,0"::"r" (val));
-}
-
-static void
-iop321_irq_mask (unsigned int irq)
-{
-
- iop321_mask &= ~(1 << (irq - IOP321_IRQ_OFS));
-
- intctl_write(iop321_mask);
-}
-
-static void
-iop321_irq_unmask (unsigned int irq)
-{
- iop321_mask |= (1 << (irq - IOP321_IRQ_OFS));
-
- intctl_write(iop321_mask);
-}
-
-struct irq_chip ext_chip = {
- .name = "IOP",
- .ack = iop321_irq_mask,
- .mask = iop321_irq_mask,
- .unmask = iop321_irq_unmask,
-};
-
-void __init iop321_init_irq(void)
-{
- unsigned int i, tmp;
-
- /* Enable access to coprocessor 6 for dealing with IRQs.
- * From RMK:
- * Basically, the Intel documentation here is poor. It appears that
- * you need to set the bit to be able to access the coprocessor from
- * SVC mode. Whether that allows access from user space or not is
- * unclear.
- */
- asm volatile (
- "mrc p15, 0, %0, c15, c1, 0\n\t"
- "orr %0, %0, %1\n\t"
- "mcr p15, 0, %0, c15, c1, 0\n\t"
- /* The action is delayed, so we have to do this: */
- "mrc p15, 0, %0, c15, c1, 0\n\t"
- "mov %0, %0\n\t"
- "sub pc, pc, #4"
- : "=r" (tmp) : "i" (1 << 6) );
-
- intctl_write(0); // disable all interrupts
- intstr_write(0); // treat all as IRQ
- if(machine_is_iq80321() ||
- machine_is_iq31244()) // all interrupts are inputs to chip
- *IOP321_PCIIRSR = 0x0f;
-
- for(i = IOP321_IRQ_OFS; i < NR_IOP321_IRQS; i++)
- {
- set_irq_chip(i, &ext_chip);
- set_irq_handler(i, do_level_IRQ);
- set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
-
- }
-}
-