diff options
Diffstat (limited to 'target/linux/adm5120/files-3.8/arch/mips/adm5120/common/irq.c')
| -rw-r--r-- | target/linux/adm5120/files-3.8/arch/mips/adm5120/common/irq.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/target/linux/adm5120/files-3.8/arch/mips/adm5120/common/irq.c b/target/linux/adm5120/files-3.8/arch/mips/adm5120/common/irq.c deleted file mode 100644 index a26e65176e..0000000000 --- a/target/linux/adm5120/files-3.8/arch/mips/adm5120/common/irq.c +++ /dev/null @@ -1,171 +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 <linux/bitops.h> - -#include <asm/irq_cpu.h> -#include <asm/mipsregs.h> - -#include <asm/mach-adm5120/adm5120_defs.h> - -static void adm5120_intc_irq_unmask(struct irq_data *d); -static void adm5120_intc_irq_mask(struct irq_data *d); -static int adm5120_intc_irq_set_type(struct irq_data *d, 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", - .irq_unmask = adm5120_intc_irq_unmask, - .irq_mask = adm5120_intc_irq_mask, - .irq_mask_ack = adm5120_intc_irq_mask, - .irq_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(struct irq_data *d) -{ - intc_write_reg(INTC_REG_IRQ_ENABLE, 1 << (d->irq - ADM5120_INTC_IRQ_BASE)); -} - -static void adm5120_intc_irq_mask(struct irq_data *d) -{ - intc_write_reg(INTC_REG_IRQ_DISABLE, 1 << (d->irq - ADM5120_INTC_IRQ_BASE)); -} - -static int adm5120_intc_irq_set_type(struct irq_data *d, unsigned int flow_type) -{ - unsigned int irq = d->irq; - 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); - 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_set_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(); -} |