340 	int ret;  in stm32_dfsdm_start_channel()  local
344 		ret = regmap_update_bits(regmap, DFSDM_CHCFGR1(chan->channel),  in stm32_dfsdm_start_channel()
347 		if (ret < 0)  in stm32_dfsdm_start_channel()
348 			return ret;  in stm32_dfsdm_start_channel()
374 	int ret;  in stm32_dfsdm_chan_configure()  local
376 	ret = regmap_update_bits(regmap, DFSDM_CHCFGR1(id),  in stm32_dfsdm_chan_configure()
379 	if (ret < 0)  in stm32_dfsdm_chan_configure()
380 		return ret;  in stm32_dfsdm_chan_configure()
381 	ret = regmap_update_bits(regmap, DFSDM_CHCFGR1(id),  in stm32_dfsdm_chan_configure()
384 	if (ret < 0)  in stm32_dfsdm_chan_configure()
385 		return ret;  in stm32_dfsdm_chan_configure()
396 	int ret;  in stm32_dfsdm_start_filter()  local
399 	ret = regmap_update_bits(dfsdm->regmap, DFSDM_CR1(fl_id),  in stm32_dfsdm_start_filter()
401 	if (ret < 0)  in stm32_dfsdm_start_filter()
402 		return ret;  in stm32_dfsdm_start_filter()
429 	int ret;  in stm32_dfsdm_filter_set_trig()  local
432 		ret = stm32_dfsdm_get_jextsel(indio_dev, trig);  in stm32_dfsdm_filter_set_trig()
433 		if (ret < 0)  in stm32_dfsdm_filter_set_trig()
434 			return ret;  in stm32_dfsdm_filter_set_trig()
437 		jextsel = ret;  in stm32_dfsdm_filter_set_trig()
441 	ret = regmap_update_bits(regmap, DFSDM_CR1(fl_id),  in stm32_dfsdm_filter_set_trig()
445 	if (ret < 0)  in stm32_dfsdm_filter_set_trig()
446 		return ret;  in stm32_dfsdm_filter_set_trig()
461 	int ret;  in stm32_dfsdm_channels_configure()  local
487 		ret = regmap_update_bits(regmap,  in stm32_dfsdm_channels_configure()
491 		if (ret)  in stm32_dfsdm_channels_configure()
492 			return ret;  in stm32_dfsdm_channels_configure()
509 	int ret;  in stm32_dfsdm_filter_configure()  local
512 	ret = regmap_update_bits(regmap, DFSDM_FCR(fl_id), DFSDM_FCR_IOSR_MASK,  in stm32_dfsdm_filter_configure()
514 	if (ret)  in stm32_dfsdm_filter_configure()
515 		return ret;  in stm32_dfsdm_filter_configure()
518 	ret = regmap_update_bits(regmap, DFSDM_FCR(fl_id), DFSDM_FCR_FOSR_MASK,  in stm32_dfsdm_filter_configure()
520 	if (ret)  in stm32_dfsdm_filter_configure()
521 		return ret;  in stm32_dfsdm_filter_configure()
523 	ret = regmap_update_bits(regmap, DFSDM_FCR(fl_id), DFSDM_FCR_FORD_MASK,  in stm32_dfsdm_filter_configure()
525 	if (ret)  in stm32_dfsdm_filter_configure()
526 		return ret;  in stm32_dfsdm_filter_configure()
528 	ret = stm32_dfsdm_filter_set_trig(indio_dev, fl_id, trig);  in stm32_dfsdm_filter_configure()
529 	if (ret)  in stm32_dfsdm_filter_configure()
530 		return ret;  in stm32_dfsdm_filter_configure()
532 	ret = regmap_update_bits(regmap, DFSDM_CR1(fl_id),  in stm32_dfsdm_filter_configure()
535 	if (ret)  in stm32_dfsdm_filter_configure()
536 		return ret;  in stm32_dfsdm_filter_configure()
576 		ret = regmap_write(regmap, DFSDM_JCHGR(fl_id), jchg);  in stm32_dfsdm_filter_configure()
577 		if (ret < 0)  in stm32_dfsdm_filter_configure()
578 			return ret;  in stm32_dfsdm_filter_configure()
605 	int ret, val;  in stm32_dfsdm_channel_parse_of()  local
607 	ret = of_property_read_u32_index(indio_dev->dev.of_node,  in stm32_dfsdm_channel_parse_of()
610 	if (ret < 0) {  in stm32_dfsdm_channel_parse_of()
614 		return ret;  in stm32_dfsdm_channel_parse_of()
623 	ret = of_property_read_string_index(indio_dev->dev.of_node,  in stm32_dfsdm_channel_parse_of()
626 	if (ret < 0) {  in stm32_dfsdm_channel_parse_of()
630 		return ret;  in stm32_dfsdm_channel_parse_of()
636 	ret = of_property_read_string_index(indio_dev->dev.of_node,  in stm32_dfsdm_channel_parse_of()
639 	if (!ret) {  in stm32_dfsdm_channel_parse_of()
648 	ret = of_property_read_string_index(indio_dev->dev.of_node,  in stm32_dfsdm_channel_parse_of()
651 	if (!ret) {  in stm32_dfsdm_channel_parse_of()
660 	ret = of_property_read_u32_index(indio_dev->dev.of_node,  in stm32_dfsdm_channel_parse_of()
663 	if (ret < 0)  in stm32_dfsdm_channel_parse_of()
685 	int ret;  in dfsdm_adc_set_samp_freq()  local
693 	ret = stm32_dfsdm_compute_all_osrs(indio_dev, oversamp);  in dfsdm_adc_set_samp_freq()
694 	if (ret < 0)  in dfsdm_adc_set_samp_freq()
695 		return ret;  in dfsdm_adc_set_samp_freq()
712 	int ret;  in dfsdm_adc_audio_set_spiclk()  local
719 	ret = kstrtoint(buf, 0, &spi_freq);  in dfsdm_adc_audio_set_spiclk()
720 	if (ret)  in dfsdm_adc_audio_set_spiclk()
721 		return ret;  in dfsdm_adc_audio_set_spiclk()
727 		ret = dfsdm_adc_set_samp_freq(indio_dev, sample_freq, spi_freq);  in dfsdm_adc_audio_set_spiclk()
728 		if (ret < 0)  in dfsdm_adc_audio_set_spiclk()
729 			return ret;  in dfsdm_adc_audio_set_spiclk()
741 	int ret;  in stm32_dfsdm_start_conv()  local
743 	ret = stm32_dfsdm_channels_configure(indio_dev, adc->fl_id, trig);  in stm32_dfsdm_start_conv()
744 	if (ret < 0)  in stm32_dfsdm_start_conv()
745 		return ret;  in stm32_dfsdm_start_conv()
747 	ret = stm32_dfsdm_start_channel(indio_dev);  in stm32_dfsdm_start_conv()
748 	if (ret < 0)  in stm32_dfsdm_start_conv()
749 		return ret;  in stm32_dfsdm_start_conv()
751 	ret = stm32_dfsdm_filter_configure(indio_dev, adc->fl_id, trig);  in stm32_dfsdm_start_conv()
752 	if (ret < 0)  in stm32_dfsdm_start_conv()
755 	ret = stm32_dfsdm_start_filter(adc, adc->fl_id, trig);  in stm32_dfsdm_start_conv()
756 	if (ret < 0)  in stm32_dfsdm_start_conv()
767 	return ret;  in stm32_dfsdm_start_conv()
916 	int ret;  in stm32_dfsdm_adc_dma_start()  local
928 	ret = dmaengine_slave_config(adc->dma_chan, &config);  in stm32_dfsdm_adc_dma_start()
929 	if (ret)  in stm32_dfsdm_adc_dma_start()
930 		return ret;  in stm32_dfsdm_adc_dma_start()
945 	ret = dma_submit_error(cookie);  in stm32_dfsdm_adc_dma_start()
946 	if (ret)  in stm32_dfsdm_adc_dma_start()
954 		ret = regmap_update_bits(adc->dfsdm->regmap,  in stm32_dfsdm_adc_dma_start()
960 		ret = regmap_update_bits(adc->dfsdm->regmap,  in stm32_dfsdm_adc_dma_start()
966 	if (ret < 0)  in stm32_dfsdm_adc_dma_start()
974 	return ret;  in stm32_dfsdm_adc_dma_start()
1005 	int ret;  in stm32_dfsdm_postenable()  local
1011 		ret = iio_hw_consumer_enable(adc->hwc);  in stm32_dfsdm_postenable()
1012 		if (ret < 0)  in stm32_dfsdm_postenable()
1013 			return ret;  in stm32_dfsdm_postenable()
1016 	ret = stm32_dfsdm_start_dfsdm(adc->dfsdm);  in stm32_dfsdm_postenable()
1017 	if (ret < 0)  in stm32_dfsdm_postenable()
1020 	ret = stm32_dfsdm_adc_dma_start(indio_dev);  in stm32_dfsdm_postenable()
1021 	if (ret) {  in stm32_dfsdm_postenable()
1026 	ret = stm32_dfsdm_start_conv(indio_dev, indio_dev->trig);  in stm32_dfsdm_postenable()
1027 	if (ret) {  in stm32_dfsdm_postenable()
1042 	return ret;  in stm32_dfsdm_postenable()
1120 	int ret;  in stm32_dfsdm_single_conv()  local
1126 	ret = stm32_dfsdm_start_dfsdm(adc->dfsdm);  in stm32_dfsdm_single_conv()
1127 	if (ret < 0)  in stm32_dfsdm_single_conv()
1128 		return ret;  in stm32_dfsdm_single_conv()
1130 	ret = regmap_update_bits(adc->dfsdm->regmap, DFSDM_CR2(adc->fl_id),  in stm32_dfsdm_single_conv()
1132 	if (ret < 0)  in stm32_dfsdm_single_conv()
1137 	ret = stm32_dfsdm_start_conv(indio_dev, NULL);  in stm32_dfsdm_single_conv()
1138 	if (ret < 0) {  in stm32_dfsdm_single_conv()
1152 		ret = -ETIMEDOUT;  in stm32_dfsdm_single_conv()
1154 		ret = timeout;  in stm32_dfsdm_single_conv()
1156 		ret = IIO_VAL_INT;  in stm32_dfsdm_single_conv()
1165 	return ret;  in stm32_dfsdm_single_conv()
1175 	int ret = -EINVAL;  in stm32_dfsdm_write_raw()  local
1191 		ret = iio_device_claim_direct_mode(indio_dev);  in stm32_dfsdm_write_raw()
1192 		if (ret)  in stm32_dfsdm_write_raw()
1193 			return ret;  in stm32_dfsdm_write_raw()
1195 		ret = stm32_dfsdm_compute_all_osrs(indio_dev, val);  in stm32_dfsdm_write_raw()
1196 		if (!ret) {  in stm32_dfsdm_write_raw()
1204 		return ret;  in stm32_dfsdm_write_raw()
1210 		ret = iio_device_claim_direct_mode(indio_dev);  in stm32_dfsdm_write_raw()
1211 		if (ret)  in stm32_dfsdm_write_raw()
1212 			return ret;  in stm32_dfsdm_write_raw()
1214 		ret = dfsdm_adc_set_samp_freq(indio_dev, val, spi_freq);  in stm32_dfsdm_write_raw()
1216 		return ret;  in stm32_dfsdm_write_raw()
1227 	int ret;  in stm32_dfsdm_read_raw()  local
1231 		ret = iio_device_claim_direct_mode(indio_dev);  in stm32_dfsdm_read_raw()
1232 		if (ret)  in stm32_dfsdm_read_raw()
1233 			return ret;  in stm32_dfsdm_read_raw()
1234 		ret = iio_hw_consumer_enable(adc->hwc);  in stm32_dfsdm_read_raw()
1235 		if (ret < 0) {  in stm32_dfsdm_read_raw()
1240 			return ret;  in stm32_dfsdm_read_raw()
1242 		ret = stm32_dfsdm_single_conv(indio_dev, chan, val);  in stm32_dfsdm_read_raw()
1244 		if (ret < 0) {  in stm32_dfsdm_read_raw()
1249 			return ret;  in stm32_dfsdm_read_raw()
1350 		int ret = PTR_ERR(adc->dma_chan);  in stm32_dfsdm_dma_request()  local
1353 		return ret;  in stm32_dfsdm_dma_request()
1374 	int ret;  in stm32_dfsdm_adc_chan_init_one()  local
1376 	ret = stm32_dfsdm_channel_parse_of(adc->dfsdm, indio_dev, ch);  in stm32_dfsdm_adc_chan_init_one()
1377 	if (ret < 0)  in stm32_dfsdm_adc_chan_init_one()
1378 		return ret;  in stm32_dfsdm_adc_chan_init_one()
1409 	int ret;  in stm32_dfsdm_audio_init()  local
1417 	ret = stm32_dfsdm_adc_chan_init_one(indio_dev, ch);  in stm32_dfsdm_audio_init()
1418 	if (ret < 0) {  in stm32_dfsdm_audio_init()
1420 		return ret;  in stm32_dfsdm_audio_init()
1439 	int ret, chan_idx;  in stm32_dfsdm_adc_init()  local
1442 	ret = stm32_dfsdm_compute_all_osrs(indio_dev, adc->oversamp);  in stm32_dfsdm_adc_init()
1443 	if (ret < 0)  in stm32_dfsdm_adc_init()
1444 		return ret;  in stm32_dfsdm_adc_init()
1465 		ret = stm32_dfsdm_adc_chan_init_one(indio_dev, &ch[chan_idx]);  in stm32_dfsdm_adc_init()
1466 		if (ret < 0) {  in stm32_dfsdm_adc_init()
1468 			return ret;  in stm32_dfsdm_adc_init()
1478 	ret = stm32_dfsdm_dma_request(dev, indio_dev);  in stm32_dfsdm_adc_init()
1479 	if (ret) {  in stm32_dfsdm_adc_init()
1480 		if (ret != -ENODEV)  in stm32_dfsdm_adc_init()
1481 			return dev_err_probe(dev, ret,  in stm32_dfsdm_adc_init()
1488 	ret = iio_triggered_buffer_setup(indio_dev,  in stm32_dfsdm_adc_init()
1491 	if (ret) {  in stm32_dfsdm_adc_init()
1494 		return ret;  in stm32_dfsdm_adc_init()
1533 	int ret, irq, val;  in stm32_dfsdm_adc_probe()  local
1550 	ret = of_property_read_u32(dev->of_node, "reg", &adc->fl_id);  in stm32_dfsdm_adc_probe()
1551 	if (ret != 0 || adc->fl_id >= adc->dfsdm->num_fls) {  in stm32_dfsdm_adc_probe()
1576 	ret = devm_request_irq(dev, irq, stm32_dfsdm_irq,  in stm32_dfsdm_adc_probe()
1578 	if (ret < 0) {  in stm32_dfsdm_adc_probe()
1580 		return ret;  in stm32_dfsdm_adc_probe()
1583 	ret = of_property_read_u32(dev->of_node, "st,filter-order", &val);  in stm32_dfsdm_adc_probe()
1584 	if (ret < 0) {  in stm32_dfsdm_adc_probe()
1586 		return ret;  in stm32_dfsdm_adc_probe()
1591 	ret = of_property_read_u32(dev->of_node, "st,filter0-sync", &val);  in stm32_dfsdm_adc_probe()
1592 	if (!ret)  in stm32_dfsdm_adc_probe()
1596 	ret = dev_data->init(dev, iio);  in stm32_dfsdm_adc_probe()
1597 	if (ret < 0)  in stm32_dfsdm_adc_probe()
1598 		return ret;  in stm32_dfsdm_adc_probe()
1600 	ret = iio_device_register(iio);  in stm32_dfsdm_adc_probe()
1601 	if (ret < 0)  in stm32_dfsdm_adc_probe()
1605 		ret = of_platform_populate(np, NULL, NULL, dev);  in stm32_dfsdm_adc_probe()
1606 		if (ret < 0) {  in stm32_dfsdm_adc_probe()
1619 	return ret;  in stm32_dfsdm_adc_probe()
1651 	int i, ret;  in stm32_dfsdm_adc_resume()  local
1657 		ret = stm32_dfsdm_chan_configure(adc->dfsdm, ch);  in stm32_dfsdm_adc_resume()
1658 		if (ret)  in stm32_dfsdm_adc_resume()
1659 			return ret;  in stm32_dfsdm_adc_resume()