2  * TI ADC081C/ADC101C/ADC121C 8/10/12-bit ADC driver
17  * bits handled. For the 8-bit and 10-bit models the least-significant 4 or 2
18  * bits of value registers are reserved.
53 	struct adc081c *adc = iio_priv(iio);  in adc081c_read_raw()  local
58 		err = i2c_smbus_read_word_swapped(adc->i2c, REG_CONV_RES);  in adc081c_read_raw()
62 		*value = (err & 0xFFF) >> (12 - adc->bits);  in adc081c_read_raw()
66 		err = regulator_get_voltage(adc->ref);  in adc081c_read_raw()
71 		*shift = adc->bits;  in adc081c_read_raw()
79 	return -EINVAL;  in adc081c_read_raw()
90 		.shift = 12 - (_bits),				\
104 	const struct iio_chan_spec* channels;  member
110 		.channels = _name ## _channels,				\
138 	struct iio_dev *indio_dev = pf->indio_dev;  in adc081c_trigger_handler()
142 	ret = i2c_smbus_read_word_swapped(data->i2c, REG_CONV_RES);  in adc081c_trigger_handler()
145 	data->scan.channel = ret;  in adc081c_trigger_handler()
146 	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,  in adc081c_trigger_handler()
149 	iio_trigger_notify_done(indio_dev->trig);  in adc081c_trigger_handler()
157 	struct adc081c *adc;  in adc081c_probe()  local
161 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))  in adc081c_probe()
162 		return -EOPNOTSUPP;  in adc081c_probe()
164 	if (ACPI_COMPANION(&client->dev)) {  in adc081c_probe()
167 		ad_id = acpi_match_device(client->dev.driver->acpi_match_table,  in adc081c_probe()
168 					  &client->dev);  in adc081c_probe()
170 			return -ENODEV;  in adc081c_probe()
171 		model = &adcxx1c_models[ad_id->driver_data];  in adc081c_probe()
173 		model = &adcxx1c_models[id->driver_data];  in adc081c_probe()
176 	iio = devm_iio_device_alloc(&client->dev, sizeof(*adc));  in adc081c_probe()
178 		return -ENOMEM;  in adc081c_probe()
180 	adc = iio_priv(iio);  in adc081c_probe()
181 	adc->i2c = client;  in adc081c_probe()
182 	adc->bits = model->bits;  in adc081c_probe()
184 	adc->ref = devm_regulator_get(&client->dev, "vref");  in adc081c_probe()
185 	if (IS_ERR(adc->ref))  in adc081c_probe()
186 		return PTR_ERR(adc->ref);  in adc081c_probe()
188 	err = regulator_enable(adc->ref);  in adc081c_probe()
192 	iio->dev.parent = &client->dev;  in adc081c_probe()
193 	iio->dev.of_node = client->dev.of_node;  in adc081c_probe()
194 	iio->name = dev_name(&client->dev);  in adc081c_probe()
195 	iio->modes = INDIO_DIRECT_MODE;  in adc081c_probe()
196 	iio->info = &adc081c_info;  in adc081c_probe()
198 	iio->channels = model->channels;  in adc081c_probe()
199 	iio->num_channels = ADC081C_NUM_CHANNELS;  in adc081c_probe()
203 		dev_err(&client->dev, "iio triggered buffer setup failed\n");  in adc081c_probe()
218 	regulator_disable(adc->ref);  in adc081c_probe()
226 	struct adc081c *adc = iio_priv(iio);  in adc081c_remove()  local
230 	regulator_disable(adc->ref);  in adc081c_remove()
275 MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");