BWN_GPIO_CONTROL
val = BWN_READ_2(mac, BWN_GPIO_CONTROL);
BWN_WRITE_2(mac, BWN_GPIO_CONTROL, val);
val = BWN_READ_2(mac, BWN_GPIO_CONTROL);
BWN_WRITE_2(mac, BWN_GPIO_CONTROL, val);
val = BWN_READ_2(mac, BWN_GPIO_CONTROL);
BWN_WRITE_2(mac, BWN_GPIO_CONTROL, val);