1 // SPDX-License-Identifier: GPL-2.0-only
201 		return regmap_read(st->regmap, reg, readval);  in ad4080_reg_access()
203 	return regmap_write(st->regmap, reg, writeval);  in ad4080_reg_access()
210 	tmp = (st->info->scale_table[0][0] * 1000000ULL) >>  in ad4080_get_scale()
211 		    st->info->channels[0].scan_type.realbits;  in ad4080_get_scale()
225 	ret = regmap_read(st->regmap, AD4080_REG_FILTER_CONFIG, &data);  in ad4080_get_dec_rate()
238 	guard(mutex)(&st->lock);  in ad4080_set_dec_rate()
240 	if ((st->filter_type >= SINC_5 && mode >= 512) || mode < 2)  in ad4080_set_dec_rate()
241 		return -EINVAL;  in ad4080_set_dec_rate()
243 	return regmap_update_bits(st->regmap, AD4080_REG_FILTER_CONFIG,  in ad4080_set_dec_rate()
246 					     (ilog2(mode) - 1)));  in ad4080_set_dec_rate()
263 		if (st->filter_type == SINC_5_COMP)  in ad4080_read_raw()
265 		if (st->filter_type)  in ad4080_read_raw()
266 			*val = DIV_ROUND_CLOSEST(st->clk_rate, dec_rate);  in ad4080_read_raw()
268 			*val = st->clk_rate;  in ad4080_read_raw()
271 		if (st->filter_type == FILTER_NONE) {  in ad4080_read_raw()
280 		return -EINVAL;  in ad4080_read_raw()
292 		if (st->filter_type == FILTER_NONE && val > 1)  in ad4080_write_raw()
293 			return -EINVAL;  in ad4080_write_raw()
297 		return -EINVAL;  in ad4080_write_raw()
303 	struct device *dev = regmap_get_device(st->regmap);  in ad4080_lvds_sync_write()
306 	ret = regmap_set_bits(st->regmap, AD4080_REG_ADC_DATA_INTF_CONFIG_A,  in ad4080_lvds_sync_write()
311 	ret = iio_backend_interface_data_align(st->back, 10000);  in ad4080_lvds_sync_write()
317 	return regmap_clear_bits(st->regmap, AD4080_REG_ADC_DATA_INTF_CONFIG_A,  in ad4080_lvds_sync_write()
328 	ret = regmap_read(st->regmap, AD4080_REG_FILTER_CONFIG, &data);  in ad4080_get_filter_type()
343 	guard(mutex)(&st->lock);  in ad4080_set_filter_type()
350 		return -EINVAL;  in ad4080_set_filter_type()
352 	ret = iio_backend_filter_type_set(st->back, mode);  in ad4080_set_filter_type()
356 	ret = regmap_update_bits(st->regmap, AD4080_REG_FILTER_CONFIG,  in ad4080_set_filter_type()
363 	st->filter_type = mode;  in ad4080_set_filter_type()
377 		switch (st->filter_type) {  in ad4080_read_avail()
384 			*length = st->filter_type >= SINC_5 ?  in ad4080_read_avail()
385 				  (ARRAY_SIZE(ad4080_dec_rate_avail) - 2) :  in ad4080_read_avail()
392 		return -EINVAL;  in ad4080_read_avail()
447 	struct device *dev = regmap_get_device(st->regmap);  in ad4080_setup()
451 	ret = regmap_write(st->regmap, AD4080_REG_INTERFACE_CONFIG_A,  in ad4080_setup()
456 	ret = regmap_write(st->regmap, AD4080_REG_INTERFACE_CONFIG_A,  in ad4080_setup()
461 	ret = regmap_read(st->regmap, AD4080_REG_CHIP_TYPE, &id);  in ad4080_setup()
468 	ret = regmap_set_bits(st->regmap, AD4080_REG_GPIO_CONFIG_A,  in ad4080_setup()
473 	ret = regmap_write(st->regmap, AD4080_REG_GPIO_CONFIG_B,  in ad4080_setup()
479 	ret = iio_backend_num_lanes_set(st->back, st->num_lanes);  in ad4080_setup()
483 	if (!st->lvds_cnv_en)  in ad4080_setup()
486 	/* Set maximum LVDS Data Transfer Latency */  in ad4080_setup()
487 	ret = regmap_update_bits(st->regmap,  in ad4080_setup()
495 	if (st->num_lanes > 1) {  in ad4080_setup()
496 		ret = regmap_set_bits(st->regmap, AD4080_REG_ADC_DATA_INTF_CONFIG_A,  in ad4080_setup()
502 	ret = regmap_set_bits(st->regmap,  in ad4080_setup()
513 	struct device *dev = regmap_get_device(st->regmap);  in ad4080_properties_parse()
515 	st->lvds_cnv_en = device_property_read_bool(dev, "adi,lvds-cnv-enable");  in ad4080_properties_parse()
517 	st->num_lanes = 1;  in ad4080_properties_parse()
518 	device_property_read_u32(dev, "adi,num-lanes", &st->num_lanes);  in ad4080_properties_parse()
519 	if (!st->num_lanes || st->num_lanes > 2)  in ad4080_properties_parse()
520 		return dev_err_probe(dev, -EINVAL,  in ad4080_properties_parse()
521 				     "Invalid 'adi,num-lanes' value: %u",  in ad4080_properties_parse()
522 				     st->num_lanes);  in ad4080_properties_parse()
530 	struct device *dev = &spi->dev;  in ad4080_probe()
535 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));  in ad4080_probe()
537 		return -ENOMEM;  in ad4080_probe()
546 				     "failed to get and enable supplies\n");  in ad4080_probe()
548 	st->regmap = devm_regmap_init_spi(spi, &ad4080_regmap_config);  in ad4080_probe()
549 	if (IS_ERR(st->regmap))  in ad4080_probe()
550 		return PTR_ERR(st->regmap);  in ad4080_probe()
552 	st->info = spi_get_device_match_data(spi);  in ad4080_probe()
553 	if (!st->info)  in ad4080_probe()
554 		return -ENODEV;  in ad4080_probe()
556 	ret = devm_mutex_init(dev, &st->lock);  in ad4080_probe()
560 	indio_dev->name = st->info->name;  in ad4080_probe()
561 	indio_dev->channels = st->info->channels;  in ad4080_probe()
562 	indio_dev->num_channels = st->info->num_channels;  in ad4080_probe()
563 	indio_dev->info = &ad4080_iio_info;  in ad4080_probe()
569 	clk = devm_clk_get_enabled(&spi->dev, "cnv");  in ad4080_probe()
573 	st->clk_rate = clk_get_rate(clk);  in ad4080_probe()
575 	st->back = devm_iio_backend_get(dev, NULL);  in ad4080_probe()
576 	if (IS_ERR(st->back))  in ad4080_probe()
577 		return PTR_ERR(st->back);  in ad4080_probe()
579 	ret = devm_iio_backend_request_buffer(dev, st->back, indio_dev);  in ad4080_probe()
583 	ret = devm_iio_backend_enable(dev, st->back);  in ad4080_probe()
591 	return devm_iio_device_register(&spi->dev, indio_dev);  in ad4080_probe()