1 // SPDX-License-Identifier: GPL-2.0
3  * Maxim MAX11205 16-Bit Delta-Sigma ADC
5  * Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX1240-max11205.pdf
16 #include <linux/iio/adc/ad_sigma_delta.h>
34 	struct regulator		*vref;  member
53 		reg_mv = regulator_get_voltage(st->vref);  in max11205_read_raw()
61 		*val = st->chip_info->out_data_rate;  in max11205_read_raw()
64 		return -EINVAL;  in max11205_read_raw()
111 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));  in max11205_probe()
113 		return -ENOMEM;  in max11205_probe()
117 	ad_sd_init(&st->sd, indio_dev, spi, &max11205_sigma_delta_info);  in max11205_probe()
119 	st->chip_info = spi_get_device_match_data(spi);  in max11205_probe()
121 	indio_dev->name = st->chip_info->name;  in max11205_probe()
122 	indio_dev->modes = INDIO_DIRECT_MODE;  in max11205_probe()
123 	indio_dev->channels = max11205_channels;  in max11205_probe()
124 	indio_dev->num_channels = 1;  in max11205_probe()
125 	indio_dev->info = &max11205_iio_info;  in max11205_probe()
127 	st->vref = devm_regulator_get(&spi->dev, "vref");  in max11205_probe()
128 	if (IS_ERR(st->vref))  in max11205_probe()
129 		return dev_err_probe(&spi->dev, PTR_ERR(st->vref),  in max11205_probe()
130 				     "Failed to get vref regulator\n");  in max11205_probe()
132 	ret = regulator_enable(st->vref);  in max11205_probe()
136 	ret = devm_add_action_or_reset(&spi->dev, max11205_reg_disable, st->vref);  in max11205_probe()
140 	ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);  in max11205_probe()
144 	return devm_iio_device_register(&spi->dev, indio_dev);  in max11205_probe()
178 MODULE_DESCRIPTION("MAX11205 ADC driver");