adm1030_write_byte
adm1030_write_byte(sc->sc_dev, sc->sc_addr, 0x1, 0x1);
adm1030_write_byte(sc->sc_dev, sc->sc_addr, 0x0, 0x95);
adm1030_write_byte(sc->sc_dev, sc->sc_addr, 0x23, 0x91);
if (adm1030_write_byte(fan->sc_dev, fan->sc_addr, 0x22, pwm) < 0)
static int adm1030_write_byte(device_t dev, uint32_t addr, uint8_t reg, uint8_t buf);