diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/au1000/pb1200/irqmap.c | 100 |
1 files changed, 56 insertions, 44 deletions
diff --git a/arch/mips/au1000/pb1200/irqmap.c b/arch/mips/au1000/pb1200/irqmap.c index bdf00e2a35e..c096be4ed4e 100644 --- a/arch/mips/au1000/pb1200/irqmap.c +++ b/arch/mips/au1000/pb1200/irqmap.c @@ -94,51 +94,41 @@ inline void pb1200_disable_irq(unsigned int irq_nr) bcsr->intclr = 1<<(irq_nr - PB1200_INT_BEGIN); } -static unsigned int pb1200_startup_irq( unsigned int irq_nr ) +static unsigned int pb1200_setup_cascade(void) { - if (++pb1200_cascade_en == 1) - { - request_irq(AU1000_GPIO_7, &pb1200_cascade_handler, - 0, "Pb1200 Cascade", (void *)&pb1200_cascade_handler ); -#ifdef CONFIG_MIPS_PB1200 - /* We have a problem with CPLD rev3. Enable a workaround */ - if( ((bcsr->whoami & BCSR_WHOAMI_CPLD)>>4) <= 3) - { - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("Pb1200 must be at CPLD rev4. Please have Pb1200\n"); - printk("updated to latest revision. This software will not\n"); - printk("work on anything less than CPLD rev4\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - while(1); - } -#endif - } - pb1200_enable_irq(irq_nr); + int err; + + err = request_irq(AU1000_GPIO_7, &pb1200_cascade_handler, + 0, "Pb1200 Cascade", &pb1200_cascade_handler); + if (err) + return err; + return 0; } -static void pb1200_shutdown_irq( unsigned int irq_nr ) +static unsigned int pb1200_startup_irq(unsigned int irq) { - pb1200_disable_irq(irq_nr); - if (--pb1200_cascade_en == 0) - { - free_irq(AU1000_GPIO_7, &pb1200_cascade_handler ); + if (++pb1200_cascade_en == 1) { + int res; + + res = pb1200_setup_cascade(); + if (res) + return res; } - return; + + pb1200_enable_irq(irq); + + return 0; } -static struct irq_chip external_irq_type = +static void pb1200_shutdown_irq(unsigned int irq) { + pb1200_disable_irq(irq); + if (--pb1200_cascade_en == 0) + free_irq(AU1000_GPIO_7, &pb1200_cascade_handler); +} + +static struct irq_chip external_irq_type = { #ifdef CONFIG_MIPS_PB1200 .name = "Pb1200 Ext", #endif @@ -155,16 +145,38 @@ static struct irq_chip external_irq_type = void _board_init_irq(void) { - int irq_nr; + unsigned int irq; - for (irq_nr = PB1200_INT_BEGIN; irq_nr <= PB1200_INT_END; irq_nr++) - { - set_irq_chip_and_handler(irq_nr, &external_irq_type, +#ifdef CONFIG_MIPS_PB1200 + /* We have a problem with CPLD rev3. Enable a workaround */ + if (((bcsr->whoami & BCSR_WHOAMI_CPLD) >> 4) <= 3) { + printk("\nWARNING!!!\n"); + printk("\nWARNING!!!\n"); + printk("\nWARNING!!!\n"); + printk("\nWARNING!!!\n"); + printk("\nWARNING!!!\n"); + printk("\nWARNING!!!\n"); + printk("Pb1200 must be at CPLD rev4. Please have Pb1200\n"); + printk("updated to latest revision. This software will not\n"); + printk("work on anything less than CPLD rev4\n"); + printk("\nWARNING!!!\n"); + printk("\nWARNING!!!\n"); + printk("\nWARNING!!!\n"); + printk("\nWARNING!!!\n"); + printk("\nWARNING!!!\n"); + printk("\nWARNING!!!\n"); + panic("Game over. Your score is 0."); + } +#endif + + for (irq = PB1200_INT_BEGIN; irq <= PB1200_INT_END; irq++) { + set_irq_chip_and_handler(irq, &external_irq_type, handle_level_irq); - pb1200_disable_irq(irq_nr); + pb1200_disable_irq(irq); } - /* GPIO_7 can not be hooked here, so it is hooked upon first - request of any source attached to the cascade */ + /* + * GPIO_7 can not be hooked here, so it is hooked upon first + * request of any source attached to the cascade + */ } - |