tina ledc驱动里面的这个 led show怎么用呀

[leomini5]

这个驱动里面带了个貌似用来测试led灯的代码

这个怎么在tina里面调用呀

static ssize_t led_show(struct class *class,
			struct class_attribute *attr,
			char *buf)
{
	struct sunxi_led *led = sunxi_led_global;

	sunxi_led_set_all(led, 0, 0);
	sunxi_led_set_all(led, 1, 0);
	sunxi_led_set_all(led, 2, 0);

	sunxi_led_set_all(led, 0, 20);
	msleep(500);
	sunxi_led_set_all(led, 1, 20);
	msleep(500);
	sunxi_led_set_all(led, 2, 20);
	msleep(500);

	sunxi_led_set_all(led, 0, 0);
	sunxi_led_set_all(led, 1, 0);
	sunxi_led_set_all(led, 2, 0);

	return 0;
}

static struct class_attribute led_class_attrs[] = {
	__ATTR(light, 0644, led_show, NULL),
	//__ATTR_NULL,
};