Lines Matching defs:adc
70 * @adc: The ADC SPI data.
73 static int adc084s021_adc_conversion(struct adc084s021 *adc, void *data)
75 int n_words = (adc->spi_trans.len >> 1) - 1; /* Discard first word */
80 ret = spi_sync(adc->spi, &adc->message);
85 *(p + i) = adc->rx_buf[i + 1];
94 struct adc084s021 *adc = iio_priv(indio_dev);
103 ret = regulator_enable(adc->reg);
109 adc->tx_buf[0] = channel->channel << 3;
110 ret = adc084s021_adc_conversion(adc, val);
112 regulator_disable(adc->reg);
121 ret = regulator_enable(adc->reg);
125 ret = regulator_get_voltage(adc->reg);
126 regulator_disable(adc->reg);
148 struct adc084s021 *adc = iio_priv(indio_dev);
150 mutex_lock(&adc->lock);
152 if (adc084s021_adc_conversion(adc, adc->scan.channels) < 0)
153 dev_err(&adc->spi->dev, "Failed to read data\n");
155 iio_push_to_buffers_with_timestamp(indio_dev, &adc->scan,
157 mutex_unlock(&adc->lock);
165 struct adc084s021 *adc = iio_priv(indio_dev);
173 adc->tx_buf[i++] = channel->channel << 3;
175 adc->spi_trans.len = 2 + (i * sizeof(__be16)); /* Trash + channels */
177 return regulator_enable(adc->reg);
182 struct adc084s021 *adc = iio_priv(indio_dev);
184 adc->spi_trans.len = 4; /* Trash + single channel */
186 return regulator_disable(adc->reg);
201 struct adc084s021 *adc;
204 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc));
210 adc = iio_priv(indio_dev);
211 adc->spi = spi;
224 adc->spi_trans.tx_buf = adc->tx_buf;
225 adc->spi_trans.rx_buf = adc->rx_buf;
226 adc->spi_trans.len = 4; /* Trash + single channel */
227 spi_message_init_with_transfers(&adc->message, &adc->spi_trans, 1);
229 adc->reg = devm_regulator_get(&spi->dev, "vref");
230 if (IS_ERR(adc->reg))
231 return PTR_ERR(adc->reg);
233 mutex_init(&adc->lock);