TSL256x_REG_CONTROL
if (tsllux_write1(sc, TSL256x_REG_CONTROL | COMMAND6x_CLEAR,
error = tsllux_write1(sc, TSL256x_REG_CONTROL,
error = tsllux_read1(sc, TSL256x_REG_CONTROL, &val);
return (tsllux_write1(sc, TSL256x_REG_CONTROL,