diff options
Diffstat (limited to 'arch/mips/alchemy/devboards/pb1200/irqmap.c')
| -rw-r--r-- | arch/mips/alchemy/devboards/pb1200/irqmap.c | 71 |
1 files changed, 1 insertions, 70 deletions
diff --git a/arch/mips/alchemy/devboards/pb1200/irqmap.c b/arch/mips/alchemy/devboards/pb1200/irqmap.c index f379b02213f1..3beb8046667b 100644 --- a/arch/mips/alchemy/devboards/pb1200/irqmap.c +++ b/arch/mips/alchemy/devboards/pb1200/irqmap.c @@ -45,69 +45,11 @@ struct au1xxx_irqmap __initdata au1xxx_irq_map[] = { { AU1000_GPIO_7, IRQF_TRIGGER_LOW, 0 }, }; -static void __iomem *bcsr_virt; - -/* - * Support for External interrupts on the Pb1200 Development platform. - */ - -static void pb1200_cascade_handler(unsigned int irq, struct irq_desc *d) -{ - unsigned short bisr = __raw_readw(bcsr_virt + BCSR_REG_INTSTAT); - - for ( ; bisr; bisr &= bisr - 1) - generic_handle_irq(PB1200_INT_BEGIN + __ffs(bisr)); -} - -/* NOTE: both the enable and mask bits must be cleared, otherwise the - * CPLD generates tons of spurious interrupts (at least on the DB1200). - */ -static void pb1200_mask_irq(unsigned int irq_nr) -{ - unsigned short v = 1 << (irq_nr - PB1200_INT_BEGIN); - __raw_writew(v, bcsr_virt + BCSR_REG_INTCLR); - __raw_writew(v, bcsr_virt + BCSR_REG_MASKCLR); - wmb(); -} - -static void pb1200_maskack_irq(unsigned int irq_nr) -{ - unsigned short v = 1 << (irq_nr - PB1200_INT_BEGIN); - __raw_writew(v, bcsr_virt + BCSR_REG_INTCLR); - __raw_writew(v, bcsr_virt + BCSR_REG_MASKCLR); - __raw_writew(v, bcsr_virt + BCSR_REG_INTSTAT); /* ack */ - wmb(); -} - -static void pb1200_unmask_irq(unsigned int irq_nr) -{ - unsigned short v = 1 << (irq_nr - PB1200_INT_BEGIN); - __raw_writew(v, bcsr_virt + BCSR_REG_INTSET); - __raw_writew(v, bcsr_virt + BCSR_REG_MASKSET); - wmb(); -} - -static struct irq_chip pb1200_cpld_irq_type = { -#ifdef CONFIG_MIPS_PB1200 - .name = "Pb1200 Ext", -#endif -#ifdef CONFIG_MIPS_DB1200 - .name = "Db1200 Ext", -#endif - .mask = pb1200_mask_irq, - .mask_ack = pb1200_maskack_irq, - .unmask = pb1200_unmask_irq, -}; - void __init board_init_irq(void) { - unsigned int irq; - au1xxx_setup_irqmap(au1xxx_irq_map, ARRAY_SIZE(au1xxx_irq_map)); #ifdef CONFIG_MIPS_PB1200 - bcsr_virt = (void __iomem *)KSEG1ADDR(PB1200_BCSR_PHYS_ADDR); - /* We have a problem with CPLD rev 3. */ if (BCSR_WHOAMI_CPLD(bcsr_read(BCSR_WHOAMI)) <= 3) { printk(KERN_ERR "WARNING!!!\n"); @@ -127,18 +69,7 @@ void __init board_init_irq(void) printk(KERN_ERR "WARNING!!!\n"); panic("Game over. Your score is 0."); } -#else - bcsr_virt = (void __iomem *)KSEG1ADDR(DB1200_BCSR_PHYS_ADDR); #endif - /* mask & disable & ack all */ - bcsr_write(BCSR_INTCLR, 0xffff); - bcsr_write(BCSR_MASKCLR, 0xffff); - bcsr_write(BCSR_INTSTAT, 0xffff); - - for (irq = PB1200_INT_BEGIN; irq <= PB1200_INT_END; irq++) - set_irq_chip_and_handler_name(irq, &pb1200_cpld_irq_type, - handle_level_irq, "level"); - - set_irq_chained_handler(AU1000_GPIO_7, pb1200_cascade_handler); + bcsr_init_irq(PB1200_INT_BEGIN, PB1200_INT_END, AU1000_GPIO_7); } |