1 // SPDX-License-Identifier: GPL-2.0
3  * The GE HealthCare PMC ADC is a 16-Channel (Voltage and current), 16-Bit
4  * ADC with an I2C Interface.
11 #include <dt-bindings/iio/adc/gehc,pmc-adc.h>
86 	ret = i2c_smbus_read_word_swapped(pmc_adc->client, cmd);  in pmc_adc_read_raw_ch()
88 		dev_err(&pmc_adc->client->dev, "i2c read word failed (%d)\n", ret);  in pmc_adc_read_raw_ch()
105 		ret = pmc_adc_read_raw_ch(pmc_adc, chan->address, val);  in pmc_adc_read_raw()
111 	return -EINVAL;  in pmc_adc_read_raw()
122 	 * args[1]: PMC ADC channel number  in pmc_adc_fwnode_xlate()
124 	if (iiospec->nargs != 2)  in pmc_adc_fwnode_xlate()
125 		return -EINVAL;  in pmc_adc_fwnode_xlate()
127 	switch (iiospec->args[0]) {  in pmc_adc_fwnode_xlate()
135 		dev_err(&indio_dev->dev, "Invalid channel type %llu\n",  in pmc_adc_fwnode_xlate()
136 			iiospec->args[0]);  in pmc_adc_fwnode_xlate()
137 		return -EINVAL;  in pmc_adc_fwnode_xlate()
140 	for (i = 0; i < indio_dev->num_channels; i++)  in pmc_adc_fwnode_xlate()
141 		if (indio_dev->channels[i].type == expected_type &&  in pmc_adc_fwnode_xlate()
142 		    indio_dev->channels[i].channel == iiospec->args[1])  in pmc_adc_fwnode_xlate()
145 	dev_err(&indio_dev->dev, "Invalid channel type %llu number %llu\n",  in pmc_adc_fwnode_xlate()
146 		iiospec->args[0], iiospec->args[1]);  in pmc_adc_fwnode_xlate()
147 	return -EINVAL;  in pmc_adc_fwnode_xlate()
170 	ret = devm_regulator_bulk_get_enable(&client->dev, ARRAY_SIZE(pmc_adc_regulator_names),  in pmc_adc_probe()
173 		return dev_err_probe(&client->dev, ret, "Failed to get regulators\n");  in pmc_adc_probe()
175 	clk = devm_clk_get_optional_enabled(&client->dev, "osc");  in pmc_adc_probe()
177 		return dev_err_probe(&client->dev, PTR_ERR(clk), "Failed to get osc clock\n");  in pmc_adc_probe()
179 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*pmc_adc));  in pmc_adc_probe()
181 		return -ENOMEM;  in pmc_adc_probe()
184 	pmc_adc->client = client;  in pmc_adc_probe()
186 	val = i2c_smbus_read_byte_data(pmc_adc->client, PMC_ADC_CMD_REQUEST_PROTOCOL_VERSION);  in pmc_adc_probe()
188 		return dev_err_probe(&client->dev, val, "Failed to get protocol version\n");  in pmc_adc_probe()
191 		return dev_err_probe(&client->dev, -EINVAL,  in pmc_adc_probe()
194 	indio_dev->name = "pmc_adc";  in pmc_adc_probe()
195 	indio_dev->info = &pmc_adc_info;  in pmc_adc_probe()
196 	indio_dev->modes = INDIO_DIRECT_MODE;  in pmc_adc_probe()
197 	indio_dev->channels = pmc_adc_channels;  in pmc_adc_probe()
198 	indio_dev->num_channels = ARRAY_SIZE(pmc_adc_channels);  in pmc_adc_probe()
200 	return devm_iio_device_register(&client->dev, indio_dev);  in pmc_adc_probe()
204 	{ .compatible = "gehc,pmc-adc"},
210 	{ "pmc-adc" },
217 		.name = "pmc-adc",
227 MODULE_DESCRIPTION("GE HealthCare PMC ADC driver");