1 // SPDX-License-Identifier: GPL-2.0-only
20 #include <dt-bindings/iio/adc/mediatek,mt6370_adc.h>
60 	 * This mutex lock is for preventing the different ADC channels
74 	mutex_lock(&priv->adc_lock);  in mt6370_adc_read_channel()
78 	ret = regmap_write(priv->regmap, MT6370_REG_CHG_ADC, reg_val);  in mt6370_adc_read_channel()
84 	ret = regmap_read_poll_timeout(priv->regmap,  in mt6370_adc_read_channel()
90 		dev_err(priv->dev, "Failed to read ADC register (%d)\n", ret);  in mt6370_adc_read_channel()
94 	ret = regmap_raw_read(priv->regmap, MT6370_REG_ADC_DATA_H,  in mt6370_adc_read_channel()
103 	mutex_unlock(&priv->adc_lock);  in mt6370_adc_read_channel()
110 	switch (priv->vid) {  in mt6370_adc_get_ibus_scale()
122 	switch (priv->vid) {  in mt6370_adc_get_ibat_scale()
145 		ret = regmap_read(priv->regmap, MT6370_REG_CHG_CTRL3, &reg_val);  in mt6370_adc_read_scale()
168 		ret = regmap_read(priv->regmap, MT6370_REG_CHG_CTRL7, &reg_val);  in mt6370_adc_read_scale()
208 		return -EINVAL;  in mt6370_adc_read_scale()
215 	*val = -20;  in mt6370_adc_read_offset()
228 		return mt6370_adc_read_channel(priv, chan->channel,  in mt6370_adc_read_raw()
229 					       chan->address, val);  in mt6370_adc_read_raw()
231 		return mt6370_adc_read_scale(priv, chan->channel, val, val2);  in mt6370_adc_read_raw()
233 		return mt6370_adc_read_offset(priv, chan->channel, val);  in mt6370_adc_read_raw()
235 		return -EINVAL;  in mt6370_adc_read_raw()
254 	return sysfs_emit(label, "%s\n", mt6370_channel_labels[chan->channel]);  in mt6370_adc_read_label()
290 	ret = regmap_read(priv->regmap, MT6370_REG_DEV_INFO, &dev_info);  in mt6370_get_vendor_info()
294 	priv->vid = FIELD_GET(MT6370_VENID_MASK, dev_info);  in mt6370_get_vendor_info()
301 	struct device *dev = &pdev->dev;  in mt6370_adc_probe()
307 	regmap = dev_get_regmap(pdev->dev.parent, NULL);  in mt6370_adc_probe()
309 		return dev_err_probe(dev, -ENODEV, "Failed to get regmap\n");  in mt6370_adc_probe()
313 		return -ENOMEM;  in mt6370_adc_probe()
316 	priv->dev = dev;  in mt6370_adc_probe()
317 	priv->regmap = regmap;  in mt6370_adc_probe()
318 	mutex_init(&priv->adc_lock);  in mt6370_adc_probe()
324 	ret = regmap_write(priv->regmap, MT6370_REG_CHG_ADC, 0);  in mt6370_adc_probe()
326 		return dev_err_probe(dev, ret, "Failed to reset ADC\n");  in mt6370_adc_probe()
328 	indio_dev->name = "mt6370-adc";  in mt6370_adc_probe()
329 	indio_dev->info = &mt6370_adc_iio_info;  in mt6370_adc_probe()
330 	indio_dev->modes = INDIO_DIRECT_MODE;  in mt6370_adc_probe()
331 	indio_dev->channels = mt6370_adc_channels;  in mt6370_adc_probe()
332 	indio_dev->num_channels = ARRAY_SIZE(mt6370_adc_channels);  in mt6370_adc_probe()
338 	{ .compatible = "mediatek,mt6370-adc", },
345 		.name = "mt6370-adc",
353 MODULE_DESCRIPTION("MT6370 ADC Driver");