linux利用键盘按键控制led灯,Linux驱动开发--通过按键控制led灯

/*request_irq()*/

#include /*work_struct*/

#define KEY_MAJOR 125

#define KEY_COUNT 4

#define DEVICE_NAME "key_led"

int key_major=KEY_MAJOR;

struct KEY{

int irq;

unsigned long flags;

char* name;

};

static struct KEY key[]={

{IRQ_EINT(0),IRQF_TRIGGER_LOW,"key1"},

{IRQ_EINT(1),IRQF_TRIGGER_LOW,"key2"},

{IRQ_EINT(2),IRQF_TRIGGER_LOW,"key3"},

{IRQ_EINT(3),IRQF_TRIGGER_LOW,"key4"},

};

struct KEY_DEV{

struct cdev cdev;

struct class* key_class;

struct work_struct key_workstruct;

int value;

};

struct KEY_DEV *key_dev;

int key_open(struct inode* inode,struct file* filp)

{

struct KEY_DEV* dev;

dev=container_of(inode->i_cdev,struct KEY_DEV,cdev);

filp->private_data=dev;

return 0;