76 static int ads8344_adc_conversion(struct ads8344 *adc, int channel,  in ads8344_adc_conversion()  argument
79 	struct spi_device *spi = adc->spi;  in ads8344_adc_conversion()
82 	adc->tx_buf = ADS8344_START;  in ads8344_adc_conversion()
84 		adc->tx_buf |= ADS8344_SINGLE_END;  in ads8344_adc_conversion()
85 	adc->tx_buf |= ADS8344_CHANNEL(channel);  in ads8344_adc_conversion()
86 	adc->tx_buf |= ADS8344_CLOCK_INTERNAL;  in ads8344_adc_conversion()
88 	ret = spi_write(spi, &adc->tx_buf, 1);  in ads8344_adc_conversion()
94 	ret = spi_read(spi, adc->rx_buf, sizeof(adc->rx_buf));  in ads8344_adc_conversion()
98 	return adc->rx_buf[0] << 9 | adc->rx_buf[1] << 1 | adc->rx_buf[2] >> 7;  in ads8344_adc_conversion()
105 	struct ads8344 *adc = iio_priv(iio);  in ads8344_read_raw()  local
109 		mutex_lock(&adc->lock);  in ads8344_read_raw()
110 		*value = ads8344_adc_conversion(adc, channel->address,  in ads8344_read_raw()
112 		mutex_unlock(&adc->lock);  in ads8344_read_raw()
118 		*value = regulator_get_voltage(adc->reg);  in ads8344_read_raw()
144 	struct ads8344 *adc;  in ads8344_probe()  local
147 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc));  in ads8344_probe()
151 	adc = iio_priv(indio_dev);  in ads8344_probe()
152 	adc->spi = spi;  in ads8344_probe()
153 	mutex_init(&adc->lock);  in ads8344_probe()
161 	adc->reg = devm_regulator_get(&spi->dev, "vref");  in ads8344_probe()
162 	if (IS_ERR(adc->reg))  in ads8344_probe()
163 		return PTR_ERR(adc->reg);  in ads8344_probe()
165 	ret = regulator_enable(adc->reg);  in ads8344_probe()
169 	ret = devm_add_action_or_reset(&spi->dev, ads8344_reg_disable, adc->reg);  in ads8344_probe()