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drivers: adc: stm32: disable dma before calibration

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For some STM32 series, DMA has to be disabled before starting ADC
calibration.

Signed-off-by: Guillaume Gautier <guillaume.gautier-ext@st.com>
This commit is contained in:
Guillaume Gautier 2024-03-07 16:46:33 +01:00 committed by Henrik Brix Andersen
parent b624013335
commit e91860d8c7
1 changed files with 17 additions and 0 deletions
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17
drivers/adc/adc_stm32.c
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@ -547,6 +547,23 @@ static int adc_stm32_calibrate(const struct device *dev)
ADC_TypeDef *adc = config->base;
int err;
#if defined(CONFIG_ADC_STM32_DMA)
#if defined(CONFIG_SOC_SERIES_STM32C0X) || \
defined(CONFIG_SOC_SERIES_STM32F0X) || \
defined(CONFIG_SOC_SERIES_STM32G0X) || \
defined(CONFIG_SOC_SERIES_STM32L0X) || \
defined(CONFIG_SOC_SERIES_STM32WBAX) || \
defined(CONFIG_SOC_SERIES_STM32WLX)
/* Make sure DMA is disabled before starting calibration */
LL_ADC_REG_SetDMATransfer(adc, LL_ADC_REG_DMA_TRANSFER_NONE);
#elif defined(CONFIG_SOC_SERIES_STM32U5X)
if (adc == ADC4) {
/* Make sure DMA is disabled before starting calibration */
LL_ADC_REG_SetDMATransfer(adc, LL_ADC_REG_DMA_TRANSFER_NONE);
}
#endif /* CONFIG_SOC_SERIES_* */
#endif /* CONFIG_ADC_STM32_DMA */
#if !DT_HAS_COMPAT_STATUS_OKAY(st_stm32f1_adc)
adc_stm32_disable(adc);
adc_stm32_calibration_start(dev);