This is good, and objectively better than letting the random unbounded length of the function name define and inflate and randomize the indentation. It also makes it easier to use long descriptive function names without fucking up the indentation.

  setup_spi(&adc,
            mode=SPI_01,
            rate=15,
            cs_control=CS_MUXED,
            cs=0x01
  );
  setup_spoo(&adc,
             mode=SPI_01,
             rate=15,
             cs_control=CS_MUXED,
             cs=0x01
  );
  setup_s(&adc,
          mode=SPI_01,
          rate=15,
          cs_control=CS_MUXED,
          cs=0x01
  );
  validate_and_register_spi_spoo_s(&adc,
                                   mode=SPI_01,
                                   rate=15,
                                   cs_control=CS_MUXED,
                                   cs=0x01
  );

Here, fixed it for you:

    setup_spi(
      &adc,
      mode        = SPI_01,
      rate        = 15,
      cs_control  = CS_MUXED,
      cs          = 0x01 );
    setup_spoo(
      &adc,
      mode        = SPI_01,
      rate        = 15,
      cs_control  = CS_MUXED,
      cs          = 0x01 );
    setup_s(
      &adc,
      mode        = SPI_01,
      rate        = 15,
      cs_control  = CS_MUXED,
      cs          = 0x01 );
    validate_and_register_spi_spoo_s(
      &adc,
      mode        = SPI_01,
      rate        = 15,
      cs_control  = CS_MUXED,
      cs          = 0x01 );