1 // SPDX-License-Identifier: GPL-2.0-only
3  * AL3320A - Dyna Image Ambient Light Sensor
7  * IIO driver for AL3320A (7-bit I2C slave address 0x1C).
11  * will need to be disabled before turning sensor OFF in order to avoid
92 	return regmap_write(data->regmap, AL3320A_REG_CONFIG, AL3320A_CONFIG_ENABLE);  in al3320a_set_pwr_on()
98 	struct device *dev = regmap_get_device(data->regmap);  in al3320a_set_pwr_off()
101 	ret = regmap_write(data->regmap, AL3320A_REG_CONFIG, AL3320A_CONFIG_DISABLE);  in al3320a_set_pwr_off()
108 	struct device *dev = regmap_get_device(data->regmap);  in al3320a_init()
119 	ret = regmap_write(data->regmap, AL3320A_REG_CONFIG_RANGE,  in al3320a_init()
124 	ret = regmap_write(data->regmap, AL3320A_REG_MEAN_TIME,  in al3320a_init()
129 	return regmap_write(data->regmap, AL3320A_REG_WAIT,  in al3320a_init()
138 	int ret, gain, raw;  in al3320a_read_raw()  local
144 		 * - low byte of output is stored at AL3320A_REG_DATA_LOW  in al3320a_read_raw()
145 		 * - high byte of output is stored at AL3320A_REG_DATA_LOW + 1  in al3320a_read_raw()
147 		ret = regmap_read(data->regmap, AL3320A_REG_DATA_LOW, &raw);  in al3320a_read_raw()
155 		ret = regmap_read(data->regmap, AL3320A_REG_CONFIG_RANGE, &gain);  in al3320a_read_raw()
159 		gain = FIELD_GET(AL3320A_GAIN_MASK, gain);  in al3320a_read_raw()
160 		*val = al3320a_scales[gain][0];  in al3320a_read_raw()
161 		*val2 = al3320a_scales[gain][1];  in al3320a_read_raw()
165 	return -EINVAL;  in al3320a_read_raw()
182 			return regmap_write(data->regmap, AL3320A_REG_CONFIG_RANGE,  in al3320a_write_raw()
187 	return -EINVAL;  in al3320a_write_raw()
199 	struct device *dev = &client->dev;  in al3320a_probe()
205 		return -ENOMEM;  in al3320a_probe()
210 	data->regmap = devm_regmap_init_i2c(client, &al3320a_regmap_config);  in al3320a_probe()
211 	if (IS_ERR(data->regmap))  in al3320a_probe()
212 		return dev_err_probe(dev, PTR_ERR(data->regmap),  in al3320a_probe()
215 	indio_dev->info = &al3320a_info;  in al3320a_probe()
216 	indio_dev->name = "al3320a";  in al3320a_probe()
217 	indio_dev->channels = al3320a_channels;  in al3320a_probe()
218 	indio_dev->num_channels = ARRAY_SIZE(al3320a_channels);  in al3320a_probe()
219 	indio_dev->modes = INDIO_DIRECT_MODE;  in al3320a_probe()
280 MODULE_DESCRIPTION("AL3320A Ambient Light Sensor driver");