[adm5120] experimental support for 2.6.27

[openwrt/svn-archive/archive.git] / target / linux / adm5120 / files-2.6.26 / arch / mips / adm5120 / common / irq.c

diff --git a/target/linux/adm5120/files-2.6.26/arch/mips/adm5120/common/irq.c b/target/linux/adm5120/files-2.6.26/arch/mips/adm5120/common/irq.c
deleted file mode 100644 (file)
index 140a7a0..0000000
--- a/target/linux/adm5120/files-2.6.26/arch/mips/adm5120/common/irq.c
+++ /dev/null
@@ -1,176 +0,0 @@
-/*
- *  ADM5120 specific interrupt handlers
- *
- *  Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
- *
- *  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/init.h>
-#include <linux/kernel.h>
-#include <linux/version.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/io.h>
-
-#include <asm/irq_cpu.h>
-#include <asm/mipsregs.h>
-#include <asm/bitops.h>
-
-#include <asm/mach-adm5120/adm5120_defs.h>
-
-static void adm5120_intc_irq_unmask(unsigned int irq);
-static void adm5120_intc_irq_mask(unsigned int irq);
-static int  adm5120_intc_irq_set_type(unsigned int irq, unsigned int flow_type);
-
-static inline void intc_write_reg(unsigned int reg, u32 val)
-{
-       void __iomem *base = (void __iomem *)KSEG1ADDR(ADM5120_INTC_BASE);
-
-       __raw_writel(val, base + reg);
-}
-
-static inline u32 intc_read_reg(unsigned int reg)
-{
-       void __iomem *base = (void __iomem *)KSEG1ADDR(ADM5120_INTC_BASE);
-
-       return __raw_readl(base + reg);
-}
-
-static struct irq_chip adm5120_intc_irq_chip = {
-       .name           = "INTC",
-       .unmask         = adm5120_intc_irq_unmask,
-       .mask           = adm5120_intc_irq_mask,
-       .mask_ack       = adm5120_intc_irq_mask,
-       .set_type       = adm5120_intc_irq_set_type
-};
-
-static struct irqaction adm5120_intc_irq_action = {
-       .handler        = no_action,
-       .name           = "cascade [INTC]"
-};
-
-static void adm5120_intc_irq_unmask(unsigned int irq)
-{
-       irq -= ADM5120_INTC_IRQ_BASE;
-       intc_write_reg(INTC_REG_IRQ_ENABLE, 1 << irq);
-}
-
-static void adm5120_intc_irq_mask(unsigned int irq)
-{
-       irq -= ADM5120_INTC_IRQ_BASE;
-       intc_write_reg(INTC_REG_IRQ_DISABLE, 1 << irq);
-}
-
-static int adm5120_intc_irq_set_type(unsigned int irq, unsigned int flow_type)
-{
-       unsigned int sense;
-       unsigned long mode;
-       int err = 0;
-
-       sense = flow_type & (IRQ_TYPE_SENSE_MASK);
-       switch (sense) {
-       case IRQ_TYPE_NONE:
-       case IRQ_TYPE_LEVEL_HIGH:
-               break;
-       case IRQ_TYPE_LEVEL_LOW:
-               switch (irq) {
-               case ADM5120_IRQ_GPIO2:
-               case ADM5120_IRQ_GPIO4:
-                       break;
-               default:
-                       err = -EINVAL;
-                       break;
-               }
-               break;
-       default:
-               err = -EINVAL;
-               break;
-       }
-
-       if (err)
-               return err;
-
-       switch (irq) {
-       case ADM5120_IRQ_GPIO2:
-       case ADM5120_IRQ_GPIO4:
-               mode = intc_read_reg(INTC_REG_INT_MODE);
-               if (sense == IRQ_TYPE_LEVEL_LOW)
-                       mode |= (1 << (irq - ADM5120_INTC_IRQ_BASE));
-               else
-                       mode &= ~(1 << (irq - ADM5120_INTC_IRQ_BASE));
-
-               intc_write_reg(INTC_REG_INT_MODE, mode);
-               /* fallthrough */
-       default:
-               irq_desc[irq].status &= ~IRQ_TYPE_SENSE_MASK;
-               irq_desc[irq].status |= sense;
-               break;
-       }
-
-       return 0;
-}
-
-static void adm5120_intc_irq_dispatch(void)
-{
-       unsigned long status;
-       int irq;
-
-       status = intc_read_reg(INTC_REG_IRQ_STATUS) & INTC_INT_ALL;
-       if (status) {
-               irq = ADM5120_INTC_IRQ_BASE + fls(status) - 1;
-               do_IRQ(irq);
-       } else
-               spurious_interrupt();
-}
-
-asmlinkage void plat_irq_dispatch(void)
-{
-       unsigned long pending;
-
-       pending = read_c0_status() & read_c0_cause() & ST0_IM;
-
-       if (pending & STATUSF_IP7)
-               do_IRQ(ADM5120_IRQ_COUNTER);
-       else if (pending & STATUSF_IP2)
-               adm5120_intc_irq_dispatch();
-       else
-               spurious_interrupt();
-}
-
-#define INTC_IRQ_STATUS (IRQ_LEVEL | IRQ_TYPE_LEVEL_HIGH | IRQ_DISABLED)
-static void __init adm5120_intc_irq_init(void)
-{
-       int i;
-
-       /* disable all interrupts */
-       intc_write_reg(INTC_REG_IRQ_DISABLE, INTC_INT_ALL);
-
-       /* setup all interrupts to generate IRQ instead of FIQ */
-       intc_write_reg(INTC_REG_INT_MODE, 0);
-
-       /* set active level for all external interrupts to HIGH */
-       intc_write_reg(INTC_REG_INT_LEVEL, 0);
-
-       /* disable usage of the TEST_SOURCE register */
-       intc_write_reg(INTC_REG_IRQ_SOURCE_SELECT, 0);
-
-       for (i = ADM5120_INTC_IRQ_BASE;
-               i <= ADM5120_INTC_IRQ_BASE + INTC_IRQ_LAST;
-               i++) {
-               irq_desc[i].status = INTC_IRQ_STATUS;
-               set_irq_chip_and_handler(i, &adm5120_intc_irq_chip,
-                       handle_level_irq);
-       }
-
-       setup_irq(ADM5120_IRQ_INTC, &adm5120_intc_irq_action);
-}
-
-void __init arch_init_irq(void) {
-       mips_cpu_irq_init();
-       adm5120_intc_irq_init();
-}