Lines Matching defs:adc
26 * Lock protecting access to adc->tx_buff and rx_buff,
76 static int ads8344_adc_conversion(struct ads8344 *adc, int channel,
79 struct spi_device *spi = adc->spi;
82 adc->tx_buf = ADS8344_START;
84 adc->tx_buf |= ADS8344_SINGLE_END;
85 adc->tx_buf |= ADS8344_CHANNEL(channel);
86 adc->tx_buf |= ADS8344_CLOCK_INTERNAL;
88 ret = spi_write(spi, &adc->tx_buf, 1);
94 ret = spi_read(spi, adc->rx_buf, sizeof(adc->rx_buf));
98 return adc->rx_buf[0] << 9 | adc->rx_buf[1] << 1 | adc->rx_buf[2] >> 7;
105 struct ads8344 *adc = iio_priv(iio);
109 mutex_lock(&adc->lock);
110 *value = ads8344_adc_conversion(adc, channel->address,
112 mutex_unlock(&adc->lock);
118 *value = regulator_get_voltage(adc->reg);
139 struct ads8344 *adc;
142 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc));
146 adc = iio_priv(indio_dev);
147 adc->spi = spi;
148 mutex_init(&adc->lock);
156 adc->reg = devm_regulator_get(&spi->dev, "vref");
157 if (IS_ERR(adc->reg))
158 return PTR_ERR(adc->reg);
160 ret = regulator_enable(adc->reg);
168 regulator_disable(adc->reg);
178 struct ads8344 *adc = iio_priv(indio_dev);
181 regulator_disable(adc->reg);