135 	struct ad7923_state *st = iio_priv(indio_dev);  in ad7923_update_scan_mode()  local
142 			st->settings;  in ad7923_update_scan_mode()
144 		st->tx_buf[len++] = cpu_to_be16(cmd);  in ad7923_update_scan_mode()
147 	st->ring_xfer[0].tx_buf = &st->tx_buf[0];  in ad7923_update_scan_mode()
148 	st->ring_xfer[0].len = len;  in ad7923_update_scan_mode()
149 	st->ring_xfer[0].cs_change = 1;  in ad7923_update_scan_mode()
151 	spi_message_init(&st->ring_msg);  in ad7923_update_scan_mode()
152 	spi_message_add_tail(&st->ring_xfer[0], &st->ring_msg);  in ad7923_update_scan_mode()
155 		st->ring_xfer[i + 1].rx_buf = &st->rx_buf[i];  in ad7923_update_scan_mode()
156 		st->ring_xfer[i + 1].len = 2;  in ad7923_update_scan_mode()
157 		st->ring_xfer[i + 1].cs_change = 1;  in ad7923_update_scan_mode()
158 		spi_message_add_tail(&st->ring_xfer[i + 1], &st->ring_msg);  in ad7923_update_scan_mode()
161 	st->ring_xfer[i + 1].cs_change = 0;  in ad7923_update_scan_mode()
176 	struct ad7923_state *st = iio_priv(indio_dev);  in ad7923_trigger_handler()  local
179 	b_sent = spi_sync(st->spi, &st->ring_msg);  in ad7923_trigger_handler()
183 	iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,  in ad7923_trigger_handler()
192 static int ad7923_scan_direct(struct ad7923_state *st, unsigned ch)  in ad7923_scan_direct()  argument
198 		st->settings;  in ad7923_scan_direct()
200 	st->tx_buf[0] = cpu_to_be16(cmd);  in ad7923_scan_direct()
202 	ret = spi_sync(st->spi, &st->scan_single_msg);  in ad7923_scan_direct()
206 	return be16_to_cpu(st->rx_buf[0]);  in ad7923_scan_direct()
209 static int ad7923_get_range(struct ad7923_state *st)  in ad7923_get_range()  argument
213 	vref = regulator_get_voltage(st->reg);  in ad7923_get_range()
219 	if (!(st->settings & AD7923_RANGE))  in ad7923_get_range()
232 	struct ad7923_state *st = iio_priv(indio_dev);  in ad7923_read_raw()  local
240 			ret = ad7923_scan_direct(st, chan->address);  in ad7923_read_raw()
253 		ret = ad7923_get_range(st);  in ad7923_read_raw()
271 	struct ad7923_state *st;  in ad7923_probe()  local
276 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));  in ad7923_probe()
280 	st = iio_priv(indio_dev);  in ad7923_probe()
284 	st->spi = spi;  in ad7923_probe()
285 	st->settings = AD7923_CODING | AD7923_RANGE |  in ad7923_probe()
299 	st->scan_single_xfer[0].tx_buf = &st->tx_buf[0];  in ad7923_probe()
300 	st->scan_single_xfer[0].len = 2;  in ad7923_probe()
301 	st->scan_single_xfer[0].cs_change = 1;  in ad7923_probe()
302 	st->scan_single_xfer[1].rx_buf = &st->rx_buf[0];  in ad7923_probe()
303 	st->scan_single_xfer[1].len = 2;  in ad7923_probe()
305 	spi_message_init(&st->scan_single_msg);  in ad7923_probe()
306 	spi_message_add_tail(&st->scan_single_xfer[0], &st->scan_single_msg);  in ad7923_probe()
307 	spi_message_add_tail(&st->scan_single_xfer[1], &st->scan_single_msg);  in ad7923_probe()
309 	st->reg = devm_regulator_get(&spi->dev, "refin");  in ad7923_probe()
310 	if (IS_ERR(st->reg))  in ad7923_probe()
311 		return PTR_ERR(st->reg);  in ad7923_probe()
313 	ret = regulator_enable(st->reg);  in ad7923_probe()
331 	regulator_disable(st->reg);  in ad7923_probe()
339 	struct ad7923_state *st = iio_priv(indio_dev);  in ad7923_remove()  local
343 	regulator_disable(st->reg);  in ad7923_remove()