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Diffstat (limited to 'kernel/arch/mips/jz4740/irq.c')
-rw-r--r--kernel/arch/mips/jz4740/irq.c162
1 files changed, 0 insertions, 162 deletions
diff --git a/kernel/arch/mips/jz4740/irq.c b/kernel/arch/mips/jz4740/irq.c
deleted file mode 100644
index 97206b3de..000000000
--- a/kernel/arch/mips/jz4740/irq.c
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
- * Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
- * JZ4740 platform IRQ support
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/timex.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-
-#include <asm/io.h>
-#include <asm/mipsregs.h>
-#include <asm/irq_cpu.h>
-
-#include <asm/mach-jz4740/base.h>
-#include <asm/mach-jz4740/irq.h>
-
-#include "irq.h"
-
-static void __iomem *jz_intc_base;
-
-#define JZ_REG_INTC_STATUS 0x00
-#define JZ_REG_INTC_MASK 0x04
-#define JZ_REG_INTC_SET_MASK 0x08
-#define JZ_REG_INTC_CLEAR_MASK 0x0c
-#define JZ_REG_INTC_PENDING 0x10
-
-static irqreturn_t jz4740_cascade(int irq, void *data)
-{
- uint32_t irq_reg;
-
- irq_reg = readl(jz_intc_base + JZ_REG_INTC_PENDING);
-
- if (irq_reg)
- generic_handle_irq(__fls(irq_reg) + JZ4740_IRQ_BASE);
-
- return IRQ_HANDLED;
-}
-
-static void jz4740_irq_set_mask(struct irq_chip_generic *gc, uint32_t mask)
-{
- struct irq_chip_regs *regs = &gc->chip_types->regs;
-
- writel(mask, gc->reg_base + regs->enable);
- writel(~mask, gc->reg_base + regs->disable);
-}
-
-void jz4740_irq_suspend(struct irq_data *data)
-{
- struct irq_chip_generic *gc = irq_data_get_irq_chip_data(data);
- jz4740_irq_set_mask(gc, gc->wake_active);
-}
-
-void jz4740_irq_resume(struct irq_data *data)
-{
- struct irq_chip_generic *gc = irq_data_get_irq_chip_data(data);
- jz4740_irq_set_mask(gc, gc->mask_cache);
-}
-
-static struct irqaction jz4740_cascade_action = {
- .handler = jz4740_cascade,
- .name = "JZ4740 cascade interrupt",
-};
-
-void __init arch_init_irq(void)
-{
- struct irq_chip_generic *gc;
- struct irq_chip_type *ct;
-
- mips_cpu_irq_init();
-
- jz_intc_base = ioremap(JZ4740_INTC_BASE_ADDR, 0x14);
-
- /* Mask all irqs */
- writel(0xffffffff, jz_intc_base + JZ_REG_INTC_SET_MASK);
-
- gc = irq_alloc_generic_chip("INTC", 1, JZ4740_IRQ_BASE, jz_intc_base,
- handle_level_irq);
-
- gc->wake_enabled = IRQ_MSK(32);
-
- ct = gc->chip_types;
- ct->regs.enable = JZ_REG_INTC_CLEAR_MASK;
- ct->regs.disable = JZ_REG_INTC_SET_MASK;
- ct->chip.irq_unmask = irq_gc_unmask_enable_reg;
- ct->chip.irq_mask = irq_gc_mask_disable_reg;
- ct->chip.irq_mask_ack = irq_gc_mask_disable_reg;
- ct->chip.irq_set_wake = irq_gc_set_wake;
- ct->chip.irq_suspend = jz4740_irq_suspend;
- ct->chip.irq_resume = jz4740_irq_resume;
-
- irq_setup_generic_chip(gc, IRQ_MSK(32), 0, 0, IRQ_NOPROBE | IRQ_LEVEL);
-
- setup_irq(2, &jz4740_cascade_action);
-}
-
-asmlinkage void plat_irq_dispatch(void)
-{
- unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
- if (pending & STATUSF_IP2)
- do_IRQ(2);
- else if (pending & STATUSF_IP3)
- do_IRQ(3);
- else
- spurious_interrupt();
-}
-
-#ifdef CONFIG_DEBUG_FS
-
-static inline void intc_seq_reg(struct seq_file *s, const char *name,
- unsigned int reg)
-{
- seq_printf(s, "%s:\t\t%08x\n", name, readl(jz_intc_base + reg));
-}
-
-static int intc_regs_show(struct seq_file *s, void *unused)
-{
- intc_seq_reg(s, "Status", JZ_REG_INTC_STATUS);
- intc_seq_reg(s, "Mask", JZ_REG_INTC_MASK);
- intc_seq_reg(s, "Pending", JZ_REG_INTC_PENDING);
-
- return 0;
-}
-
-static int intc_regs_open(struct inode *inode, struct file *file)
-{
- return single_open(file, intc_regs_show, NULL);
-}
-
-static const struct file_operations intc_regs_operations = {
- .open = intc_regs_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int __init intc_debugfs_init(void)
-{
- (void) debugfs_create_file("jz_regs_intc", S_IFREG | S_IRUGO,
- NULL, NULL, &intc_regs_operations);
- return 0;
-}
-subsys_initcall(intc_debugfs_init);
-
-#endif