174 	struct ad74413r_state *st = context;  in ad74413r_reg_write()  local
176 	ad74413r_format_reg_write(reg, val, st->reg_tx_buf);  in ad74413r_reg_write()
178 	return spi_write(st->spi, st->reg_tx_buf, AD74413R_FRAME_SIZE);  in ad74413r_reg_write()
181 static int ad74413r_crc_check(struct ad74413r_state *st, u8 *buf)  in ad74413r_crc_check()  argument
186 		dev_err(st->dev, "Bad CRC %02x for %02x%02x%02x\n",  in ad74413r_crc_check()
196 	struct ad74413r_state *st = context;  in ad74413r_reg_read()  local
199 			.tx_buf = st->reg_tx_buf,  in ad74413r_reg_read()
204 			.rx_buf = st->reg_rx_buf,  in ad74413r_reg_read()
211 				  st->reg_tx_buf);  in ad74413r_reg_read()
213 	ret = spi_sync_transfer(st->spi, reg_read_xfer,  in ad74413r_reg_read()
218 	ret = ad74413r_crc_check(st, st->reg_rx_buf);  in ad74413r_reg_read()
222 	*val = get_unaligned_be16(&st->reg_rx_buf[1]);  in ad74413r_reg_read()
234 static int ad74413r_set_gpo_config(struct ad74413r_state *st,  in ad74413r_set_gpo_config()  argument
237 	return regmap_update_bits(st->regmap, AD74413R_REG_GPO_CONFIG_X(offset),  in ad74413r_set_gpo_config()
248 static int ad74413r_set_comp_debounce(struct ad74413r_state *st,  in ad74413r_set_comp_debounce()  argument
261 	return regmap_update_bits(st->regmap,  in ad74413r_set_comp_debounce()
267 static int ad74413r_set_comp_drive_strength(struct ad74413r_state *st,  in ad74413r_set_comp_drive_strength()  argument
273 	return regmap_update_bits(st->regmap, AD74413R_REG_DIN_CONFIG_X(offset),  in ad74413r_set_comp_drive_strength()
282 	struct ad74413r_state *st = gpiochip_get_data(chip);  in ad74413r_gpio_set()  local
283 	unsigned int real_offset = st->gpo_gpio_offsets[offset];  in ad74413r_gpio_set()
286 	ret = ad74413r_set_gpo_config(st, real_offset,  in ad74413r_gpio_set()
291 	regmap_update_bits(st->regmap, AD74413R_REG_GPO_CONFIG_X(real_offset),  in ad74413r_gpio_set()
300 	struct ad74413r_state *st = gpiochip_get_data(chip);  in ad74413r_gpio_set_multiple()  local
307 		unsigned int real_offset = st->gpo_gpio_offsets[offset];  in ad74413r_gpio_set_multiple()
309 		ret = ad74413r_set_gpo_config(st, real_offset,  in ad74413r_gpio_set_multiple()
319 	regmap_update_bits(st->regmap, AD74413R_REG_GPO_PAR_DATA,  in ad74413r_gpio_set_multiple()
325 	struct ad74413r_state *st = gpiochip_get_data(chip);  in ad74413r_gpio_get()  local
326 	unsigned int real_offset = st->comp_gpio_offsets[offset];  in ad74413r_gpio_get()
330 	ret = regmap_read(st->regmap, AD74413R_REG_DIN_COMP_OUT, &status);  in ad74413r_gpio_get()
343 	struct ad74413r_state *st = gpiochip_get_data(chip);  in ad74413r_gpio_get_multiple()  local
348 	ret = regmap_read(st->regmap, AD74413R_REG_DIN_COMP_OUT, &val);  in ad74413r_gpio_get_multiple()
353 		unsigned int real_offset = st->comp_gpio_offsets[offset];  in ad74413r_gpio_get_multiple()
377 	struct ad74413r_state *st = gpiochip_get_data(chip);  in ad74413r_gpio_set_gpo_config()  local
378 	unsigned int real_offset = st->gpo_gpio_offsets[offset];  in ad74413r_gpio_set_gpo_config()
382 		return ad74413r_set_gpo_config(st, real_offset,  in ad74413r_gpio_set_gpo_config()
385 		return ad74413r_set_gpo_config(st, real_offset,  in ad74413r_gpio_set_gpo_config()
396 	struct ad74413r_state *st = gpiochip_get_data(chip);  in ad74413r_gpio_set_comp_config()  local
397 	unsigned int real_offset = st->comp_gpio_offsets[offset];  in ad74413r_gpio_set_comp_config()
401 		return ad74413r_set_comp_debounce(st, real_offset,  in ad74413r_gpio_set_comp_config()
408 static int ad74413r_reset(struct ad74413r_state *st)  in ad74413r_reset()  argument
413 	reset_gpio = devm_gpiod_get_optional(st->dev, "reset", GPIOD_OUT_HIGH);  in ad74413r_reset()
423 	ret = regmap_write(st->regmap, AD74413R_REG_CMD_KEY,  in ad74413r_reset()
428 	return regmap_write(st->regmap, AD74413R_REG_CMD_KEY,  in ad74413r_reset()
432 static int ad74413r_set_channel_dac_code(struct ad74413r_state *st,  in ad74413r_set_channel_dac_code()  argument
440 	return regmap_multi_reg_write(st->regmap, reg_seq, 2);  in ad74413r_set_channel_dac_code()
443 static int ad74413r_set_channel_function(struct ad74413r_state *st,  in ad74413r_set_channel_function()  argument
448 	ret = regmap_update_bits(st->regmap,  in ad74413r_set_channel_function()
456 	ret = ad74413r_set_channel_dac_code(st, channel, 0);  in ad74413r_set_channel_function()
463 	ret = regmap_update_bits(st->regmap,  in ad74413r_set_channel_function()
473 		ret = regmap_set_bits(st->regmap,  in ad74413r_set_channel_function()
480 static int ad74413r_set_adc_conv_seq(struct ad74413r_state *st,  in ad74413r_set_adc_conv_seq()  argument
489 	ret = regmap_write_bits(st->regmap, AD74413R_REG_ADC_CONV_CTRL,  in ad74413r_set_adc_conv_seq()
503 static int ad74413r_set_adc_channel_enable(struct ad74413r_state *st,  in ad74413r_set_adc_channel_enable()  argument
507 	return regmap_update_bits(st->regmap, AD74413R_REG_ADC_CONV_CTRL,  in ad74413r_set_adc_channel_enable()
512 static int ad74413r_get_adc_range(struct ad74413r_state *st,  in ad74413r_get_adc_range()  argument
518 	ret = regmap_read(st->regmap, AD74413R_REG_ADC_CONFIG_X(channel), val);  in ad74413r_get_adc_range()
527 static int ad74413r_get_adc_rejection(struct ad74413r_state *st,  in ad74413r_get_adc_rejection()  argument
533 	ret = regmap_read(st->regmap, AD74413R_REG_ADC_CONFIG_X(channel), val);  in ad74413r_get_adc_rejection()
542 static int ad74413r_set_adc_rejection(struct ad74413r_state *st,  in ad74413r_set_adc_rejection()  argument
546 	return regmap_update_bits(st->regmap,  in ad74413r_set_adc_rejection()
553 static int ad74413r_rejection_to_rate(struct ad74413r_state *st,  in ad74413r_rejection_to_rate()  argument
570 		dev_err(st->dev, "ADC rejection invalid\n");  in ad74413r_rejection_to_rate()
575 static int ad74413r_rate_to_rejection(struct ad74413r_state *st,  in ad74413r_rate_to_rejection()  argument
592 		dev_err(st->dev, "ADC rate invalid\n");  in ad74413r_rate_to_rejection()
597 static int ad74413r_range_to_voltage_range(struct ad74413r_state *st,  in ad74413r_range_to_voltage_range()  argument
612 		dev_err(st->dev, "ADC range invalid\n");  in ad74413r_range_to_voltage_range()
617 static int ad74413r_range_to_voltage_offset(struct ad74413r_state *st,  in ad74413r_range_to_voltage_offset()  argument
630 		dev_err(st->dev, "ADC range invalid\n");  in ad74413r_range_to_voltage_offset()
635 static int ad74413r_range_to_voltage_offset_raw(struct ad74413r_state *st,  in ad74413r_range_to_voltage_offset_raw()  argument
650 		dev_err(st->dev, "ADC range invalid\n");  in ad74413r_range_to_voltage_offset_raw()
655 static int ad74413r_get_output_voltage_scale(struct ad74413r_state *st,  in ad74413r_get_output_voltage_scale()  argument
664 static int ad74413r_get_output_current_scale(struct ad74413r_state *st,  in ad74413r_get_output_current_scale()  argument
667 	*val = st->refin_reg_uv;  in ad74413r_get_output_current_scale()
668 	*val2 = st->sense_resistor_ohms * AD74413R_DAC_CODE_MAX * 1000;  in ad74413r_get_output_current_scale()
673 static int ad74413r_get_input_voltage_scale(struct ad74413r_state *st,  in ad74413r_get_input_voltage_scale()  argument
680 	ret = ad74413r_get_adc_range(st, channel, &range);  in ad74413r_get_input_voltage_scale()
684 	ret = ad74413r_range_to_voltage_range(st, range, val);  in ad74413r_get_input_voltage_scale()
693 static int ad74413r_get_input_voltage_offset(struct ad74413r_state *st,  in ad74413r_get_input_voltage_offset()  argument
699 	ret = ad74413r_get_adc_range(st, channel, &range);  in ad74413r_get_input_voltage_offset()
703 	ret = ad74413r_range_to_voltage_offset_raw(st, range, val);  in ad74413r_get_input_voltage_offset()
710 static int ad74413r_get_input_current_scale(struct ad74413r_state *st,  in ad74413r_get_input_current_scale()  argument
717 	ret = ad74413r_get_adc_range(st, channel, &range);  in ad74413r_get_input_current_scale()
721 	ret = ad74413r_range_to_voltage_range(st, range, val);  in ad74413r_get_input_current_scale()
725 	*val2 = AD74413R_ADC_RESULT_MAX * st->sense_resistor_ohms;  in ad74413r_get_input_current_scale()
730 static int ad74413r_get_input_current_offset(struct ad74413r_state *st,  in ad74413r_get_input_current_offset()  argument
738 	ret = ad74413r_get_adc_range(st, channel, &range);  in ad74413r_get_input_current_offset()
742 	ret = ad74413r_range_to_voltage_range(st, range, &voltage_range);  in ad74413r_get_input_current_offset()
746 	ret = ad74413r_range_to_voltage_offset(st, range, &voltage_offset);  in ad74413r_get_input_current_offset()
755 static int ad74413r_get_adc_rate(struct ad74413r_state *st,  in ad74413r_get_adc_rate()  argument
761 	ret = ad74413r_get_adc_rejection(st, channel, &rejection);  in ad74413r_get_adc_rate()
765 	ret = ad74413r_rejection_to_rate(st, rejection, val);  in ad74413r_get_adc_rate()
772 static int ad74413r_set_adc_rate(struct ad74413r_state *st,  in ad74413r_set_adc_rate()  argument
778 	ret = ad74413r_rate_to_rejection(st, val, &rejection);  in ad74413r_set_adc_rate()
782 	return ad74413r_set_adc_rejection(st, channel, rejection);  in ad74413r_set_adc_rate()
789 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_trigger_handler()  local
790 	u8 *rx_buf = st->adc_samples_buf.rx_buf;  in ad74413r_trigger_handler()
794 	ret = spi_sync(st->spi, &st->adc_samples_msg);  in ad74413r_trigger_handler()
798 	for (i = 0; i < st->adc_active_channels; i++)  in ad74413r_trigger_handler()
799 		ad74413r_crc_check(st, &rx_buf[i * AD74413R_FRAME_SIZE]);  in ad74413r_trigger_handler()
801 	iio_push_to_buffers_with_timestamp(indio_dev, &st->adc_samples_buf,  in ad74413r_trigger_handler()
813 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_adc_data_interrupt()  local
816 		iio_trigger_poll(st->trig);  in ad74413r_adc_data_interrupt()
818 		complete(&st->adc_data_completion);  in ad74413r_adc_data_interrupt()
823 static int _ad74413r_get_single_adc_result(struct ad74413r_state *st,  in _ad74413r_get_single_adc_result()  argument
829 	reinit_completion(&st->adc_data_completion);  in _ad74413r_get_single_adc_result()
831 	ret = ad74413r_set_adc_channel_enable(st, channel, true);  in _ad74413r_get_single_adc_result()
835 	ret = ad74413r_set_adc_conv_seq(st, AD74413R_CONV_SEQ_SINGLE);  in _ad74413r_get_single_adc_result()
839 	ret = wait_for_completion_timeout(&st->adc_data_completion,  in _ad74413r_get_single_adc_result()
846 	ret = regmap_read(st->regmap, AD74413R_REG_ADC_RESULT_X(channel),  in _ad74413r_get_single_adc_result()
851 	ret = ad74413r_set_adc_conv_seq(st, AD74413R_CONV_SEQ_OFF);  in _ad74413r_get_single_adc_result()
855 	ret = ad74413r_set_adc_channel_enable(st, channel, false);  in _ad74413r_get_single_adc_result()
867 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_get_single_adc_result()  local
870 		guard(mutex)(&st->lock);  in ad74413r_get_single_adc_result()
871 		return _ad74413r_get_single_adc_result(st, channel, val);  in ad74413r_get_single_adc_result()
888 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_update_scan_mode()  local
889 	struct spi_transfer *xfer = st->adc_samples_xfer;  in ad74413r_update_scan_mode()
890 	u8 *rx_buf = st->adc_samples_buf.rx_buf;  in ad74413r_update_scan_mode()
891 	u8 *tx_buf = st->adc_samples_tx_buf;  in ad74413r_update_scan_mode()
895 	guard(mutex)(&st->lock);  in ad74413r_update_scan_mode()
897 	spi_message_init(&st->adc_samples_msg);  in ad74413r_update_scan_mode()
898 	st->adc_active_channels = 0;  in ad74413r_update_scan_mode()
901 		ret = ad74413r_set_adc_channel_enable(st, channel, false);  in ad74413r_update_scan_mode()
923 		ret = ad74413r_set_adc_channel_enable(st, channel, true);  in ad74413r_update_scan_mode()
927 		st->adc_active_channels++;  in ad74413r_update_scan_mode()
929 		if (xfer == st->adc_samples_xfer)  in ad74413r_update_scan_mode()
942 		spi_message_add_tail(xfer, &st->adc_samples_msg);  in ad74413r_update_scan_mode()
945 		if (xfer != st->adc_samples_xfer)  in ad74413r_update_scan_mode()
955 	spi_message_add_tail(xfer, &st->adc_samples_msg);  in ad74413r_update_scan_mode()
961 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_buffer_postenable()  local
963 	return ad74413r_set_adc_conv_seq(st, AD74413R_CONV_SEQ_CONTINUOUS);  in ad74413r_buffer_postenable()
968 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_buffer_predisable()  local
970 	return ad74413r_set_adc_conv_seq(st, AD74413R_CONV_SEQ_OFF);  in ad74413r_buffer_predisable()
977 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_read_raw()  local
984 				return ad74413r_get_output_voltage_scale(st,  in ad74413r_read_raw()
987 				return ad74413r_get_input_voltage_scale(st,  in ad74413r_read_raw()
991 				return ad74413r_get_output_current_scale(st,  in ad74413r_read_raw()
994 				return ad74413r_get_input_current_scale(st,  in ad74413r_read_raw()
1002 			return ad74413r_get_input_voltage_offset(st,  in ad74413r_read_raw()
1005 			return ad74413r_get_input_current_offset(st,  in ad74413r_read_raw()
1029 		return ad74413r_get_adc_rate(st, chan->channel, val);  in ad74413r_read_raw()
1039 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_write_raw()  local
1047 			dev_err(st->dev, "Invalid DAC code\n");  in ad74413r_write_raw()
1051 		return ad74413r_set_channel_dac_code(st, chan->channel, val);  in ad74413r_write_raw()
1053 		return ad74413r_set_adc_rate(st, chan->channel, val);  in ad74413r_write_raw()
1064 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_read_avail()  local
1068 		if (st->chip_info->hart_support) {  in ad74413r_read_avail()
1191 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_parse_channel_config()  local
1198 		dev_err(st->dev, "Failed to read channel reg: %d\n", ret);  in ad74413r_parse_channel_config()
1203 		dev_err(st->dev, "Channel index %u is too large\n", index);  in ad74413r_parse_channel_config()
1207 	config = &st->channel_configs[index];  in ad74413r_parse_channel_config()
1209 		dev_err(st->dev, "Channel %u already initialized\n", index);  in ad74413r_parse_channel_config()
1217 		dev_err(st->dev, "Invalid channel function %u\n", config->func);  in ad74413r_parse_channel_config()
1221 	if (!st->chip_info->hart_support &&  in ad74413r_parse_channel_config()
1224 		dev_err(st->dev, "Unsupported HART function %u\n", config->func);  in ad74413r_parse_channel_config()
1230 		st->num_comparator_gpios++;  in ad74413r_parse_channel_config()
1239 		st->num_gpo_gpios++;  in ad74413r_parse_channel_config()
1250 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_parse_channel_configs()  local
1253 	device_for_each_child_node_scoped(st->dev, channel_node) {  in ad74413r_parse_channel_configs()
1264 	struct ad74413r_state *st = iio_priv(indio_dev);  in ad74413r_setup_channels()  local
1271 	channels = devm_kcalloc(st->dev, sizeof(*channels),  in ad74413r_setup_channels()
1279 		config = &st->channel_configs[i];  in ad74413r_setup_channels()
1295 		ret = ad74413r_set_channel_function(st, i, config->func);  in ad74413r_setup_channels()
1305 static int ad74413r_setup_gpios(struct ad74413r_state *st)  in ad74413r_setup_gpios()  argument
1316 		config = &st->channel_configs[i];  in ad74413r_setup_gpios()
1322 			st->gpo_gpio_offsets[gpo_gpio_i++] = i;  in ad74413r_setup_gpios()
1327 			st->comp_gpio_offsets[comp_gpio_i++] = i;  in ad74413r_setup_gpios()
1330 			ret = ad74413r_set_comp_drive_strength(st, i, strength);  in ad74413r_setup_gpios()
1335 		ret = ad74413r_set_gpo_config(st, i, gpo_config);  in ad74413r_setup_gpios()
1345 	struct ad74413r_state *st;  in ad74413r_probe()  local
1349 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));  in ad74413r_probe()
1353 	st = iio_priv(indio_dev);  in ad74413r_probe()
1355 	st->spi = spi;  in ad74413r_probe()
1356 	st->dev = &spi->dev;  in ad74413r_probe()
1357 	st->chip_info = spi_get_device_match_data(spi);  in ad74413r_probe()
1358 	if (!st->chip_info)  in ad74413r_probe()
1361 	ret = devm_mutex_init(st->dev, &st->lock);  in ad74413r_probe()
1365 	init_completion(&st->adc_data_completion);  in ad74413r_probe()
1367 	st->regmap = devm_regmap_init(st->dev, NULL, st,  in ad74413r_probe()
1369 	if (IS_ERR(st->regmap))  in ad74413r_probe()
1370 		return PTR_ERR(st->regmap);  in ad74413r_probe()
1372 	ret = devm_regulator_get_enable_read_voltage(st->dev, "refin");  in ad74413r_probe()
1374 		return dev_err_probe(st->dev, ret,  in ad74413r_probe()
1376 	st->refin_reg_uv = ret;  in ad74413r_probe()
1378 	st->sense_resistor_ohms = 100000000;  in ad74413r_probe()
1379 	device_property_read_u32(st->dev, "shunt-resistor-micro-ohms",  in ad74413r_probe()
1380 				 &st->sense_resistor_ohms);  in ad74413r_probe()
1381 	st->sense_resistor_ohms /= 1000000;  in ad74413r_probe()
1383 	st->trig = devm_iio_trigger_alloc(st->dev, "%s-dev%d",  in ad74413r_probe()
1384 					  st->chip_info->name, iio_device_id(indio_dev));  in ad74413r_probe()
1385 	if (!st->trig)  in ad74413r_probe()
1388 	st->trig->ops = &ad74413r_trigger_ops;  in ad74413r_probe()
1389 	iio_trigger_set_drvdata(st->trig, st);  in ad74413r_probe()
1391 	ret = devm_iio_trigger_register(st->dev, st->trig);  in ad74413r_probe()
1395 	indio_dev->name = st->chip_info->name;  in ad74413r_probe()
1398 	indio_dev->trig = iio_trigger_get(st->trig);  in ad74413r_probe()
1400 	ret = ad74413r_reset(st);  in ad74413r_probe()
1412 	ret = ad74413r_setup_gpios(st);  in ad74413r_probe()
1416 	if (st->num_gpo_gpios) {  in ad74413r_probe()
1417 		st->gpo_gpiochip.owner = THIS_MODULE;  in ad74413r_probe()
1418 		st->gpo_gpiochip.label = st->chip_info->name;  in ad74413r_probe()
1419 		st->gpo_gpiochip.base = -1;  in ad74413r_probe()
1420 		st->gpo_gpiochip.ngpio = st->num_gpo_gpios;  in ad74413r_probe()
1421 		st->gpo_gpiochip.parent = st->dev;  in ad74413r_probe()
1422 		st->gpo_gpiochip.can_sleep = true;  in ad74413r_probe()
1423 		st->gpo_gpiochip.set = ad74413r_gpio_set;  in ad74413r_probe()
1424 		st->gpo_gpiochip.set_multiple = ad74413r_gpio_set_multiple;  in ad74413r_probe()
1425 		st->gpo_gpiochip.set_config = ad74413r_gpio_set_gpo_config;  in ad74413r_probe()
1426 		st->gpo_gpiochip.get_direction =  in ad74413r_probe()
1429 		ret = devm_gpiochip_add_data(st->dev, &st->gpo_gpiochip, st);  in ad74413r_probe()
1434 	if (st->num_comparator_gpios) {  in ad74413r_probe()
1435 		st->comp_gpiochip.owner = THIS_MODULE;  in ad74413r_probe()
1436 		st->comp_gpiochip.label = st->chip_info->name;  in ad74413r_probe()
1437 		st->comp_gpiochip.base = -1;  in ad74413r_probe()
1438 		st->comp_gpiochip.ngpio = st->num_comparator_gpios;  in ad74413r_probe()
1439 		st->comp_gpiochip.parent = st->dev;  in ad74413r_probe()
1440 		st->comp_gpiochip.can_sleep = true;  in ad74413r_probe()
1441 		st->comp_gpiochip.get = ad74413r_gpio_get;  in ad74413r_probe()
1442 		st->comp_gpiochip.get_multiple = ad74413r_gpio_get_multiple;  in ad74413r_probe()
1443 		st->comp_gpiochip.set_config = ad74413r_gpio_set_comp_config;  in ad74413r_probe()
1444 		st->comp_gpiochip.get_direction =  in ad74413r_probe()
1447 		ret = devm_gpiochip_add_data(st->dev, &st->comp_gpiochip, st);  in ad74413r_probe()
1452 	ret = ad74413r_set_adc_conv_seq(st, AD74413R_CONV_SEQ_OFF);  in ad74413r_probe()
1456 	ret = devm_request_irq(st->dev, spi->irq, ad74413r_adc_data_interrupt,  in ad74413r_probe()
1457 			       0, st->chip_info->name, indio_dev);  in ad74413r_probe()
1459 		return dev_err_probe(st->dev, ret, "Failed to request irq\n");  in ad74413r_probe()
1461 	ret = devm_iio_triggered_buffer_setup(st->dev, indio_dev,  in ad74413r_probe()
1468 	return devm_iio_device_register(st->dev, indio_dev);  in ad74413r_probe()