static int platform_led_probe(struct platform_device *pdev)
{
int result;
dev_t devno;
devno = MKDEV(major,minor);
if(major)
result = register_chrdev_region(devno,1,"led-dyf");
else{
result = alloc_chrdev_region(&devno,0,1,"led-dyf");
major = MAJOR(devno);
}
if(result < 0){
printk("driver init unsuccess!\n");
return result;
}
gpbcon = (volatile unsigned long *)ioremap(0x56000010,16);
gpbdat = gpbcon + 1;
cdev_setup();
dyf_led_init();
led_all_off();
printk("platform_led_driver is init successfull!\n");
return 0;
}
static int __init cdev_vir_init(void)
{
int ret=0;
dev_t dev;
int i;
char node_name[NAME_LEN];
printk(KERN_ERR "cdev ringbuffer world!\n");
ret = alloc_chrdev_region(&dev, 0, DEV_NUM, device_name);
if (ret)
{
CL_ERR("cdev: alloc_chardev_region failed!\n");
ret = -1;
return ret;
}
vir_cdev_class = class_create(THIS_MODULE,device_name);
if(IS_ERR(vir_cdev_class)) {
CL_ERR(" failed in creating class.\n");
ret = -1;
goto err_class_create;
}
CL_PRINT("class_create\n");
vir_devices = kzalloc(sizeof(struct vir_device)*DEV_NUM,GFP_KERNEL);
if(vir_devices == NULL)
{
CL_ERR("kmalloc vir_device \n");
ret = -1;
goto err_kzalloc_err;
}
for(i=0;i<DEV_NUM;i++)
{
sprintf(node_name,"%s%d",device_name,i);
cdev_setup(&vir_devices[i],dev+i,node_name);
}
goto err_chrdev_region;
err_kzalloc_err:
class_destroy(vir_cdev_class);
err_class_create:
unregister_chrdev_region(dev, DEV_NUM);
err_chrdev_region:
return ret;
}