IRQ_TYPE_EDGE_FALLING=0x00000002, IRQ_TYPE_EDGE_BOTH= (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING), IRQ_TYPE_LEVEL_HIGH=0x00000004, IRQ_TYPE_LEVEL_LOW=0x00000008, IRQ_TYPE_LEVEL_MASK= (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH), IRQ_TYPE_SENSE_MASK=0x0000000f 我们需要指定这个事件。
irq &=31;switch(flow_type) {caseIRQ_TYPE_LEVEL_HIGH: type = ACTIVE_HIGH;break;caseIRQ_TYPE_LEVEL_LOW: type = ACTIVE_LOW;break;caseIRQ_TYPE_EDGE_RISING: type = RISING_EDGE_TRIGGER;break;caseIRQ_TYPE_EDGE_FALLING: type = FALLING_EDGE_TRIGGER;break;caseIRQ_TYPE_EDGE_BOTH: type = EITHER...
#define IRQ_TYPE_EDGE_BOTH (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING) //边沿触发 #define IRQ_TYPE_LEVEL_HIGH 0x00000004 /* Level high type */ //高电平触发 #define IRQ_TYPE_LEVEL_LOW 0x00000008 /* Level low type */ //低电平触发 #define IRQ_TYPE_SENSE_MASK 0x0000000f /* Mask...
if (new->flags & IRQF_TRIGGER_MASK) { if (desc->chip && desc->chip->set_type) // desc->chip->set_type设置为中断引脚 desc->chip->set_type(irq,new->flags & IRQF_TRIGGER_MASK); else printk(KERN_WARNING "No IRQF_TRIGGER set_type " "function for IRQ %d (%s)\n", irq, desc->...
gpio_request(GPIO_FN_KEYIN4,NULL);/* enable TouchScreen */set_irq_type(IRQ28, IRQ_TYPE_LEVEL_LOW); tsc_device.irq = IRQ28; i2c_register_board_info(1, &tsc_device,1);/* LCDC0 */lcdc_info.clock_source = LCDC_CLK_PERIPHERAL; ...
> level low or falling edge? Yes. The signal sent to the GIC is effectively bit 0 of the PENDING register. So it's a "1" when the IRQ is triggered, regardless of the physical pin trigger type. >> +} >> + >> +static struct irq_chip sun6i_r_intc_chip = { ...
--- ds1374:rtc@68 { compatible = "dallas,ds1374"; interrupt-parent = <&gpio8>; interrupts = <7 IRQ_TYPE_EDGE_FALLING>;//or interrupts = <7 IRQ_TYPE_LEVEL_LOW>; reg = <0x68>; }; --- Is there a way to bypass IRQ dependency, just by declaring a boolean like "wakeup-...
+ IRQ_TYPE_EDGE_FALLING : + IRQ_TYPE_LEVEL_LOW; + case ACPI_ACTIVE_HIGH: + return trigger == ACPI_EDGE_SENSITIVE ? + IRQ_TYPE_EDGE_RISING : + IRQ_TYPE_LEVEL_HIGH; + case ACPI_ACTIVE_BOTH: + if (trigger == ACPI_EDGE_SENSITIVE) ...
#define IRQ_TYPE_EDGE_BOTH (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING) //边沿触发 #define IRQ_TYPE_LEVEL_HIGH 0x00000004 /* Level high type */ //高电平触发 #define IRQ_TYPE_LEVEL_LOW 0x00000008 /* Level low type */ //低电平触发 ...
handle_level_irq); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE); } irq_set_chained_handler(PXA_GPIO_TO_IRQ(0), lpd270_irq_handler); irq_set_irq_type(PXA_GPIO_TO_IRQ(0), IRQ_TYPE_EDGE_FALLING);2...