MCS7840_DEV_REG_CONTROL1
{.reg_sp = MCS7840_DEV_REG_SP1,.reg_control = MCS7840_DEV_REG_CONTROL1,.reg_dcr = MCS7840_DEV_REG_DCR0_1},
if (umcs7840_get_reg_sync(sc, MCS7840_DEV_REG_CONTROL1, &data))
if (umcs7840_set_reg_sync(sc, MCS7840_DEV_REG_CONTROL1, data))