取得 Ethernet 是否有連線的function
/TRUNK/SDK4120/source/linux-2.6.36.x/drivers/net/raeth/raether.c
GPIO 定義
linux-2.6.36.x/drivers/char/ralink_gpio.c
GPIO 預設值
linux-2.6.36.x/drivers/char/ralink_gpio.c
void ralink_gpio_led_init_timer(void) { ... }