1 // SPDX-License-Identifier: GPL-2.0+
3  * Support for ON Semiconductor NOA1305 ambient light sensor
44 #define NOA1305_DRIVER_NAME	"noa1305"
57 	ret = regmap_bulk_read(priv->regmap, NOA1305_REG_ALS_DATA_LSB, &data,  in noa1305_measure()
70 	ret = regmap_read(priv->regmap, NOA1305_REG_INTEGRATION_TIME, &data);  in noa1305_scale()
114 		return -EINVAL;  in noa1305_scale()
132 	int ret = -EINVAL;  in noa1305_read_raw()
137 		switch (chan->type) {  in noa1305_read_raw()
149 		switch (chan->type) {  in noa1305_read_raw()
194 	regulator_disable(priv->vin_reg);  in noa1305_reg_remove()
207 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*priv));  in noa1305_probe()
209 		return -ENOMEM;  in noa1305_probe()
213 		dev_err(&client->dev, "Regmap initialization failed.\n");  in noa1305_probe()
219 	priv->vin_reg = devm_regulator_get(&client->dev, "vin");  in noa1305_probe()
220 	if (IS_ERR(priv->vin_reg))  in noa1305_probe()
221 		return dev_err_probe(&client->dev, PTR_ERR(priv->vin_reg),  in noa1305_probe()
224 	ret = regulator_enable(priv->vin_reg);  in noa1305_probe()
226 		dev_err(&client->dev, "enable regulator vin failed\n");  in noa1305_probe()
230 	ret = devm_add_action_or_reset(&client->dev, noa1305_reg_remove, priv);  in noa1305_probe()
232 		dev_err(&client->dev, "addition of devm action failed\n");  in noa1305_probe()
237 	priv->client = client;  in noa1305_probe()
238 	priv->regmap = regmap;  in noa1305_probe()
242 		dev_err(&client->dev, "ID reading failed: %d\n", ret);  in noa1305_probe()
248 		dev_err(&client->dev, "Unknown device ID: 0x%x\n", dev_id);  in noa1305_probe()
249 		return -ENODEV;  in noa1305_probe()
255 		dev_err(&client->dev, "Enabling power control failed\n");  in noa1305_probe()
261 		dev_err(&client->dev, "Device reset failed\n");  in noa1305_probe()
268 		dev_err(&client->dev, "Setting integration time failed\n");  in noa1305_probe()
272 	indio_dev->info = &noa1305_info;  in noa1305_probe()
273 	indio_dev->channels = noa1305_channels;  in noa1305_probe()
274 	indio_dev->num_channels = ARRAY_SIZE(noa1305_channels);  in noa1305_probe()
275 	indio_dev->name = NOA1305_DRIVER_NAME;  in noa1305_probe()
276 	indio_dev->modes = INDIO_DIRECT_MODE;  in noa1305_probe()
278 	ret = devm_iio_device_register(&client->dev, indio_dev);  in noa1305_probe()
280 		dev_err(&client->dev, "registering device failed\n");  in noa1305_probe()
286 	{ .compatible = "onnn,noa1305" },
292 	{ "noa1305", 0 },
310 MODULE_DESCRIPTION("ON Semiconductor NOA1305 ambient light sensor");