gud_usb_set_u8
int gud_usb_set_u8(struct gud_device *gdrm, u8 request, u8 val);
gud_usb_set_u8(gdrm, GUD_REQ_SET_CONTROLLER_ENABLE, 1);
gud_usb_set_u8(gdrm, GUD_REQ_SET_DISPLAY_ENABLE, 1);
gud_usb_set_u8(gdrm, GUD_REQ_SET_DISPLAY_ENABLE, 0);
gud_usb_set_u8(gdrm, GUD_REQ_SET_CONTROLLER_ENABLE, 0);