STM32_DAC_CR
ret = regmap_update_bits(regmap, STM32_DAC_CR,
ret = regmap_set_bits(priv->common.regmap, STM32_DAC_CR,
ret = regmap_read(dac->common->regmap, STM32_DAC_CR, &val);
ret = regmap_update_bits(dac->common->regmap, STM32_DAC_CR, msk, en);