GPIO_INTM_EDGE_TRIG_IRQ
rtl8xxxu_write16_set(priv, REG_GPIO_INTM, GPIO_INTM_EDGE_TRIG_IRQ);
rtl8xxxu_write16_clear(priv, REG_GPIO_INTM, GPIO_INTM_EDGE_TRIG_IRQ);
val16 &= ~GPIO_INTM_EDGE_TRIG_IRQ;