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drivers: adc: stm32 oversampling includes the ADC of the stm32U5 soc

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This commit extends the configuration of the oversampling
ratio and shift for the stm32U5xx soc, depending on the
ADC instance: ratio is a value from 1..1024 or a LL_ADC_OVS_RATIO_x
to be used with the stm32Cube LL function.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2021-10-25 16:00:45 +02:00 • committed by Maureen Helm
commit e26fcc47b9
1 changed files with 9 additions and 0 deletions
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9
drivers/adc/adc_stm32.c
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@ -325,6 +325,7 @@ static void adc_stm32_calib(const struct device *dev)
defined(CONFIG_SOC_SERIES_STM32L0X) || \
defined(CONFIG_SOC_SERIES_STM32L4X) || \
defined(CONFIG_SOC_SERIES_STM32L5X) || \
defined(CONFIG_SOC_SERIES_STM32U5X) || \
defined(CONFIG_SOC_SERIES_STM32WBX) || \
defined(CONFIG_SOC_SERIES_STM32WLX)
@ -367,6 +368,14 @@ static void adc_stm32_oversampling(ADC_TypeDef *adc, uint8_t ratio, uint32_t shi
#endif /* ADC_VER_V5_V90*/
MODIFY_REG(adc->CFGR2, (ADC_CFGR2_OVSS | ADC_CFGR2_OVSR),
(shift | (((1UL << ratio) - 1) << ADC_CFGR2_OVSR_Pos)));
#elif defined(CONFIG_SOC_SERIES_STM32U5X)
if (adc == ADC1) {
/* the LL function expects a value from 1 to 1024 */
LL_ADC_ConfigOverSamplingRatioShift(adc, (1 << ratio), shift);
} else {
/* the LL function expects a value LL_ADC_OVS_RATIO_x */
LL_ADC_ConfigOverSamplingRatioShift(adc, stm32_adc_ratio_table[ratio], shift);
}
#else /* CONFIG_SOC_SERIES_STM32H7X */
LL_ADC_ConfigOverSamplingRatioShift(adc, stm32_adc_ratio_table[ratio], shift);
#endif /* CONFIG_SOC_SERIES_STM32H7X */