diff options
Diffstat (limited to 'target/linux/adm8668/files-3.14/arch/mips/adm8668/irq.c')
| -rw-r--r-- | target/linux/adm8668/files-3.14/arch/mips/adm8668/irq.c | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/target/linux/adm8668/files-3.14/arch/mips/adm8668/irq.c b/target/linux/adm8668/files-3.14/arch/mips/adm8668/irq.c deleted file mode 100644 index 9d3b2b9b83..0000000000 --- a/target/linux/adm8668/files-3.14/arch/mips/adm8668/irq.c +++ /dev/null @@ -1,126 +0,0 @@ -/* - * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us> - * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org> - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ - -#include <linux/init.h> -#include <linux/kernel_stat.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/interrupt.h> -#include <linux/slab.h> -#include <linux/random.h> -#include <linux/pm.h> -#include <linux/irq.h> -#include <asm/mipsregs.h> -#include <asm/irq_cpu.h> -#include <asm/irq.h> -#include <adm8668.h> - -/* interrupt controller */ -#define IRQ_STATUS_REG 0x00 /* Read */ -#define IRQ_ENABLE_REG 0x08 /* Read/Write */ -#define IRQ_DISABLE_REG 0x0C /* Write */ - -#define IRQ_MASK 0xffff - -static inline void intc_write_reg(u32 val, unsigned int reg) -{ - void __iomem *base = (void __iomem *)KSEG1ADDR(ADM8668_INTC_BASE); - - __raw_writel(val, base + reg); -} - -static inline u32 intc_read_reg(unsigned int reg) -{ - void __iomem *base = (void __iomem *)KSEG1ADDR(ADM8668_INTC_BASE); - - return __raw_readl(base + reg); -} - -static void adm8668_irq_cascade(void) -{ - int irq; - u32 intsrc; - - intsrc = intc_read_reg(IRQ_STATUS_REG) & IRQ_MASK; - if (intsrc) { - irq = fls(intsrc) - 1; - do_IRQ(irq); - } else - spurious_interrupt(); -} - -/* - * System irq dispatch - */ -void plat_irq_dispatch(void) -{ - unsigned int pending; - - pending = read_c0_cause() & read_c0_status() & ST0_IM; - - /* timer interrupt, that we renumbered */ - if (pending & STATUSF_IP7) - do_IRQ(MIPS_CPU_IRQ_BASE + 7); - else if (pending & STATUSF_IP2) - adm8668_irq_cascade(); - else - spurious_interrupt(); -} - -/* - * enable 8668 irq - */ -static void enable_adm8668_irq(struct irq_data *d) -{ - intc_write_reg((1 << d->irq), IRQ_ENABLE_REG); -} - - -static void ack_adm8668_irq(struct irq_data *d) -{ - intc_write_reg((1 << d->irq), IRQ_DISABLE_REG); -} - -/* - * system irq type - */ - -static struct irq_chip adm8668_irq_type = { - .name = "adm8668", - .irq_ack = ack_adm8668_irq, - .irq_mask = ack_adm8668_irq, - .irq_unmask = enable_adm8668_irq -}; - -/* - * irq init - */ -static void __init init_adm8668_irqs(void) -{ - int i; - - /* disable all interrupts for the moment */ - intc_write_reg(IRQ_MASK, IRQ_DISABLE_REG); - - for (i = 0; i <= ADM8668_IRQ_MAX; i++) - irq_set_chip_and_handler(i, &adm8668_irq_type, - handle_level_irq); - - /* hw0 is where our interrupts are uh.. interrupted at. */ - set_c0_status(IE_IRQ0); -} - -/* - * system init - */ -void __init arch_init_irq(void) -{ - mips_cpu_irq_init(); - init_adm8668_irqs(); -} |