1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  max517.c - Support for Maxim MAX517, MAX518 and MAX519
47 	struct i2c_client *client = data->client;  in max517_set_value()
52 		return -EINVAL;  in max517_set_value()
61 		return -EIO;  in max517_set_value()
76 		/* Corresponds to Vref / 2^(bits) */  in max517_read_raw()
77 		*val = data->vref_mv[chan->channel];  in max517_read_raw()
83 	return -EINVAL;  in max517_read_raw()
93 		ret = max517_set_value(indio_dev, val, chan->channel);  in max517_write_raw()
96 		ret = -EINVAL;  in max517_write_raw()
149 	struct max517_platform_data *platform_data = client->dev.platform_data;  in max517_probe()
152 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));  in max517_probe()
154 		return -ENOMEM;  in max517_probe()
156 	data->client = client;  in max517_probe()
158 	switch (id->driver_data) {  in max517_probe()
160 		indio_dev->num_channels = 8;  in max517_probe()
163 		indio_dev->num_channels = 4;  in max517_probe()
167 		indio_dev->num_channels = 2;  in max517_probe()
170 		indio_dev->num_channels = 1;  in max517_probe()
173 	indio_dev->channels = max517_channels;  in max517_probe()
174 	indio_dev->modes = INDIO_DIRECT_MODE;  in max517_probe()
175 	indio_dev->info = &max517_info;  in max517_probe()
181 	for (chan = 0; chan < indio_dev->num_channels; chan++) {  in max517_probe()
182 		if (id->driver_data == ID_MAX518 || !platform_data)  in max517_probe()
183 			data->vref_mv[chan] = 5000; /* mV */  in max517_probe()
185 			data->vref_mv[chan] = platform_data->vref_mv[chan];  in max517_probe()
188 	return devm_iio_device_register(&client->dev, indio_dev);  in max517_probe()
212 MODULE_DESCRIPTION("MAX517/518/519/520/521 8-bit DAC");