Lines Matching +full:adc +full:- +full:chan

1 // SPDX-License-Identifier: GPL-2.0+
3  * ti-adc161s626.c - Texas Instruments ADC161S626 1-channel differential ADC
5  * ADC Devices Supported:
6  *  adc141s626 - 14-bit ADC
7  *  adc161s626 - 16-bit ADC
9  * Copyright (C) 2016-2018
25 #define TI_ADC_DRV_NAME	"ti-adc161s626"
78 				   struct iio_chan_spec const *chan, int *val)
82 	switch (data->read_size) {
86 		ret = spi_read(data->spi, (void *) &buf, 2);
96 		ret = spi_read(data->spi, (void *) &buf, 3);
104 		return -EINVAL;
107 	*val = sign_extend32(*val >> data->shift, chan->scan_type.realbits - 1);
115 	struct iio_dev *indio_dev = pf->indio_dev;
119 	ret = ti_adc_read_measurement(data, &indio_dev->channels[0],
120 				     (int *) &data->buffer);
123 					data->buffer,
126 	iio_trigger_notify_done(indio_dev->trig);
132 			   struct iio_chan_spec const *chan,
141 			return -EBUSY;
142 		ret = ti_adc_read_measurement(data, chan, val);
148 		ret = regulator_get_voltage(data->ref);
153 		*val2 = chan->scan_type.realbits;
157 		*val = 1 << (chan->scan_type.realbits - 1);
179 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*data));
181 		return -ENOMEM;
183 	indio_dev->info = &ti_adc_info;
184 	indio_dev->name = TI_ADC_DRV_NAME;
185 	indio_dev->modes = INDIO_DIRECT_MODE;
188 	data->spi = spi;
190 	switch (spi_get_device_id(spi)->driver_data) {
192 		indio_dev->channels = ti_adc141s626_channels;
193 		indio_dev->num_channels = ARRAY_SIZE(ti_adc141s626_channels);
194 		data->shift = 0;
195 		data->read_size = 2;
198 		indio_dev->channels = ti_adc161s626_channels;
199 		indio_dev->num_channels = ARRAY_SIZE(ti_adc161s626_channels);
200 		data->shift = 6;
201 		data->read_size = 3;
205 	data->ref = devm_regulator_get(&spi->dev, "vdda");
206 	if (IS_ERR(data->ref))
207 		return PTR_ERR(data->ref);
209 	ret = regulator_enable(data->ref);
213 	ret = devm_add_action_or_reset(&spi->dev, ti_adc_reg_disable,
214 				       data->ref);
218 	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, NULL,
223 	return devm_iio_device_register(&spi->dev, indio_dev);
251 MODULE_DESCRIPTION("Texas Instruments ADC1x1S 1-channel differential ADC");