Lines Matching refs:adc

44 static int adc128_adc_conversion(struct adc128 *adc, u8 channel)
48 	guard(mutex)(&adc->lock);
50 	adc->buffer[0] = channel << 3;
51 	adc->buffer[1] = 0;
53 	ret = spi_write(adc->spi, &adc->buffer, sizeof(adc->buffer));
57 	ret = spi_read(adc->spi, &adc->buffer16, sizeof(adc->buffer16));
61 	return be16_to_cpu(adc->buffer16) & 0xFFF;
68 	struct adc128 *adc = iio_priv(indio_dev);
74 		ret = adc128_adc_conversion(adc, channel->channel);
83 		*val = adc->vref_mv;
157 	struct adc128 *adc;
160 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc));
164 	adc = iio_priv(indio_dev);
165 	adc->spi = spi;
183 	adc->vref_mv = ret / 1000;
194 	ret = devm_mutex_init(&spi->dev, &adc->lock);