iio/dac/max5522.c

1 // SPDX-License-Identifier: GPL-2.0-only
4  * Dual, Ultra-Low-Power 10-Bit, Voltage-Output DACs
74 	return MAX5522_REG_DATA(chan->channel);  in max5522_info_to_reg()
86 		*val = state->dac_cache[chan->channel];  in max5522_read_raw()
89 		ret = regulator_get_voltage(state->vrefin_reg);  in max5522_read_raw()
91 			return -EINVAL;  in max5522_read_raw()
96 		return -EINVAL;  in max5522_read_raw()
99 	return -EINVAL;  in max5522_read_raw()
110 		return -EINVAL;  in max5522_write_raw()
112 	rval = regmap_write(state->regmap, max5522_info_to_reg(chan),  in max5522_write_raw()
113 			    val << chan->scan_type.shift);  in max5522_write_raw()
117 	state->dac_cache[chan->channel] = val;  in max5522_write_raw()
139 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*state));  in max5522_spi_probe()
141 		dev_err(&spi->dev, "failed to allocate iio device\n");  in max5522_spi_probe()
142 		return  -ENOMEM;  in max5522_spi_probe()
146 	state->chip_info = spi_get_device_match_data(spi);  in max5522_spi_probe()
147 	if (!state->chip_info)  in max5522_spi_probe()
148 		return -EINVAL;  in max5522_spi_probe()
150 	state->vrefin_reg = devm_regulator_get(&spi->dev, "vrefin");  in max5522_spi_probe()
151 	if (IS_ERR(state->vrefin_reg))  in max5522_spi_probe()
152 		return dev_err_probe(&spi->dev, PTR_ERR(state->vrefin_reg),  in max5522_spi_probe()
155 	ret = regulator_enable(state->vrefin_reg);  in max5522_spi_probe()
157 		return dev_err_probe(&spi->dev, ret,  in max5522_spi_probe()
161 	state->regmap = devm_regmap_init_spi(spi, &max5522_regmap_config);  in max5522_spi_probe()
163 	if (IS_ERR(state->regmap))  in max5522_spi_probe()
164 		return PTR_ERR(state->regmap);  in max5522_spi_probe()
166 	indio_dev->info = &max5522_info;  in max5522_spi_probe()
167 	indio_dev->modes = INDIO_DIRECT_MODE;  in max5522_spi_probe()
168 	indio_dev->channels = max5522_channels;  in max5522_spi_probe()
169 	indio_dev->num_channels = ARRAY_SIZE(max5522_channels);  in max5522_spi_probe()
170 	indio_dev->name = max5522_chip_info_tbl[ID_MAX5522].name;  in max5522_spi_probe()
172 	return devm_iio_device_register(&spi->dev, indio_dev);  in max5522_spi_probe()