1 // SPDX-License-Identifier: GPL-2.0
57 		*val = priv->value[chan->channel];  in ltc1660_read_raw()
60 		*val = regulator_get_voltage(priv->vref_reg);  in ltc1660_read_raw()
62 			dev_err(&priv->spi->dev, "failed to read vref regulator: %d\n",  in ltc1660_read_raw()
67 		/* Convert to mV */  in ltc1660_read_raw()
69 		*val2 = chan->scan_type.realbits;  in ltc1660_read_raw()
72 		return -EINVAL;  in ltc1660_read_raw()
88 			return -EINVAL;  in ltc1660_write_raw()
90 		if (val < 0 || val > GENMASK(chan->scan_type.realbits - 1, 0))  in ltc1660_write_raw()
91 			return -EINVAL;  in ltc1660_write_raw()
93 		ret = regmap_write(priv->regmap, chan->channel,  in ltc1660_write_raw()
94 					(val << chan->scan_type.shift));  in ltc1660_write_raw()
96 			priv->value[chan->channel] = val;  in ltc1660_write_raw()
100 		return -EINVAL;  in ltc1660_write_raw()
115 		.shift = 12 - (bits),			\
144 	return regmap_write(priv->regmap, LTC1660_REG_SLEEP, 0x00);  in ltc1660_suspend()
151 	return regmap_write(priv->regmap, LTC1660_REG_WAKE, 0x00);  in ltc1660_resume()
163 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*priv));  in ltc1660_probe()
165 		return -ENOMEM;  in ltc1660_probe()
168 	priv->regmap = devm_regmap_init_spi(spi, &ltc1660_regmap_config);  in ltc1660_probe()
169 	if (IS_ERR(priv->regmap)) {  in ltc1660_probe()
170 		dev_err(&spi->dev, "failed to register spi regmap %ld\n",  in ltc1660_probe()
171 			PTR_ERR(priv->regmap));  in ltc1660_probe()
172 		return PTR_ERR(priv->regmap);  in ltc1660_probe()
175 	priv->vref_reg = devm_regulator_get(&spi->dev, "vref");  in ltc1660_probe()
176 	if (IS_ERR(priv->vref_reg))  in ltc1660_probe()
177 		return dev_err_probe(&spi->dev, PTR_ERR(priv->vref_reg),  in ltc1660_probe()
178 				     "vref regulator not specified\n");  in ltc1660_probe()
180 	ret = regulator_enable(priv->vref_reg);  in ltc1660_probe()
182 		dev_err(&spi->dev, "failed to enable vref regulator: %d\n",  in ltc1660_probe()
187 	priv->spi = spi;  in ltc1660_probe()
189 	indio_dev->info = &ltc1660_info;  in ltc1660_probe()
190 	indio_dev->modes = INDIO_DIRECT_MODE;  in ltc1660_probe()
191 	indio_dev->channels = ltc1660_channels[id->driver_data];  in ltc1660_probe()
192 	indio_dev->num_channels = LTC1660_NUM_CHANNELS;  in ltc1660_probe()
193 	indio_dev->name = id->name;  in ltc1660_probe()
197 		dev_err(&spi->dev, "failed to register iio device: %d\n",  in ltc1660_probe()
205 	regulator_disable(priv->vref_reg);  in ltc1660_probe()
216 	regulator_disable(priv->vref_reg);  in ltc1660_remove()