in adgs1408.c [36:47]
static int adgs1408_set(struct mux_control *mux, int state)
{
struct spi_device *spi = to_spi_device(mux->chip->dev.parent);
u8 reg;
if (state == MUX_IDLE_DISCONNECT)
reg = ADGS1408_DISABLE;
else
reg = ADGS1408_MUX(state);
return adgs1408_spi_reg_write(spi, ADGS1408_SW_DATA, reg);
}