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drivers: adc: nrf: align to non-gain configuration

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Some nRF devices do not allow to configure gain.

Signed-off-by: Nikodem Kastelik <nikodem.kastelik@nordicsemi.no>
This commit is contained in:
Nikodem Kastelik 2025-06-03 08:25:49 +02:00 • committed by Benjamin Cabé
commit 647477c851
1 changed files with 6 additions and 0 deletions
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6
drivers/adc/adc_nrfx_saadc.c
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@ -65,7 +65,9 @@ static const uint32_t saadc_psels[NRF_SAADC_DVDD + 1] = {
[NRF_SAADC_AIN6] = NRF_PIN_PORT_TO_PIN_NUMBER(4U, 1),
[NRF_SAADC_AIN7] = NRF_PIN_PORT_TO_PIN_NUMBER(3U, 1),
[NRF_SAADC_VDD] = NRF_SAADC_INPUT_VDD,
#if defined(NRF_SAADC_INPUT_AVDD)
[NRF_SAADC_AVDD] = NRF_SAADC_INPUT_AVDD,
#endif
[NRF_SAADC_DVDD] = NRF_SAADC_INPUT_DVDD,
};
#endif
@ -231,6 +233,7 @@ static int adc_nrfx_channel_setup(const struct device *dev,
return -EINVAL;
}
#if NRF_SAADC_HAS_CH_GAIN
switch (channel_cfg->gain) {
#if defined(SAADC_CH_CONFIG_GAIN_Gain1_6)
case ADC_GAIN_1_6:
@ -284,6 +287,9 @@ static int adc_nrfx_channel_setup(const struct device *dev,
break;
#endif
default:
#else
if (channel_cfg->gain != ADC_GAIN_1) {
#endif /* defined(NRF_SAADC_HAS_CH_GAIN) */
LOG_ERR("Selected ADC gain is not valid");
return -EINVAL;
}