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Diffstat (limited to 'arch/frv/kernel/irq-mb93493.c')
-rw-r--r--arch/frv/kernel/irq-mb93493.c147
1 files changed, 0 insertions, 147 deletions
diff --git a/arch/frv/kernel/irq-mb93493.c b/arch/frv/kernel/irq-mb93493.c
deleted file mode 100644
index 8ca5aa4..0000000
--- a/arch/frv/kernel/irq-mb93493.c
+++ /dev/null
@@ -1,147 +0,0 @@
-/* irq-mb93493.c: MB93493 companion chip interrupt handler
- *
- * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/ptrace.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/bitops.h>
-
-#include <asm/io.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/irc-regs.h>
-#include <asm/mb93493-irqs.h>
-#include <asm/mb93493-regs.h>
-
-#define IRQ_ROUTE_ONE(X) (X##_ROUTE << (X - IRQ_BASE_MB93493))
-
-#define IRQ_ROUTING \
- (IRQ_ROUTE_ONE(IRQ_MB93493_VDC) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_VCC) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_AUDIO_OUT) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_I2C_0) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_I2C_1) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_USB) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_LOCAL_BUS) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_PCMCIA) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_GPIO) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_AUDIO_IN))
-
-/*
- * daughter board PIC operations
- * - there is no way to ACK interrupts in the MB93493 chip
- */
-static void frv_mb93493_mask(struct irq_data *d)
-{
- uint32_t iqsr;
- volatile void *piqsr;
-
- if (IRQ_ROUTING & (1 << (d->irq - IRQ_BASE_MB93493)))
- piqsr = __addr_MB93493_IQSR(1);
- else
- piqsr = __addr_MB93493_IQSR(0);
-
- iqsr = readl(piqsr);
- iqsr &= ~(1 << (d->irq - IRQ_BASE_MB93493 + 16));
- writel(iqsr, piqsr);
-}
-
-static void frv_mb93493_ack(struct irq_data *d)
-{
-}
-
-static void frv_mb93493_unmask(struct irq_data *d)
-{
- uint32_t iqsr;
- volatile void *piqsr;
-
- if (IRQ_ROUTING & (1 << (d->irq - IRQ_BASE_MB93493)))
- piqsr = __addr_MB93493_IQSR(1);
- else
- piqsr = __addr_MB93493_IQSR(0);
-
- iqsr = readl(piqsr);
- iqsr |= 1 << (d->irq - IRQ_BASE_MB93493 + 16);
- writel(iqsr, piqsr);
-}
-
-static struct irq_chip frv_mb93493_pic = {
- .name = "mb93093",
- .irq_ack = frv_mb93493_ack,
- .irq_mask = frv_mb93493_mask,
- .irq_mask_ack = frv_mb93493_mask,
- .irq_unmask = frv_mb93493_unmask,
-};
-
-/*
- * MB93493 PIC interrupt handler
- */
-static irqreturn_t mb93493_interrupt(int irq, void *_piqsr)
-{
- volatile void *piqsr = _piqsr;
- uint32_t iqsr;
-
- iqsr = readl(piqsr);
- iqsr = iqsr & (iqsr >> 16) & 0xffff;
-
- /* poll all the triggered IRQs */
- while (iqsr) {
- int irq;
-
- asm("scan %1,gr0,%0" : "=r"(irq) : "r"(iqsr));
- irq = 31 - irq;
- iqsr &= ~(1 << irq);
-
- generic_handle_irq(IRQ_BASE_MB93493 + irq);
- }
-
- return IRQ_HANDLED;
-}
-
-/*
- * define an interrupt action for each MB93493 PIC output
- * - use dev_id to indicate the MB93493 PIC input to output mappings
- */
-static struct irqaction mb93493_irq[2] = {
- [0] = {
- .handler = mb93493_interrupt,
- .flags = IRQF_SHARED,
- .name = "mb93493.0",
- .dev_id = (void *) __addr_MB93493_IQSR(0),
- },
- [1] = {
- .handler = mb93493_interrupt,
- .flags = IRQF_SHARED,
- .name = "mb93493.1",
- .dev_id = (void *) __addr_MB93493_IQSR(1),
- }
-};
-
-/*
- * initialise the motherboard MB93493's PIC
- */
-void __init mb93493_init(void)
-{
- int irq;
-
- for (irq = IRQ_BASE_MB93493 + 0; irq <= IRQ_BASE_MB93493 + 10; irq++)
- irq_set_chip_and_handler(irq, &frv_mb93493_pic,
- handle_edge_irq);
-
- /* the MB93493 drives external IRQ inputs on the CPU PIC */
- setup_irq(IRQ_CPU_MB93493_0, &mb93493_irq[0]);
- setup_irq(IRQ_CPU_MB93493_1, &mb93493_irq[1]);
-}
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