1 // SPDX-License-Identifier: GPL-2.0
158 	struct device *dev = priv->dev;  in rtq6056_adc_read_channel()
159 	unsigned int addr = ch->address;  in rtq6056_adc_read_channel()
164 	ret = regmap_read(priv->regmap, addr, &regval);  in rtq6056_adc_read_channel()
170 	/* Power and VBUS is unsigned 16-bit, others are signed 16-bit */  in rtq6056_adc_read_channel()
182 	switch (ch->address) {  in rtq6056_adc_read_scale()
198 		return -EINVAL;  in rtq6056_adc_read_scale()
205  * https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf
219 		return -EINVAL;  in rtq6056_adc_set_samp_freq()
221 	if (ch->address == RTQ6056_REG_SHUNTVOLT) {  in rtq6056_adc_set_samp_freq()
222 		rm_field = priv->rm_fields[F_VSHUNTCT];  in rtq6056_adc_set_samp_freq()
223 		ct = &priv->vshuntct_us;  in rtq6056_adc_set_samp_freq()
224 	} else if (ch->address == RTQ6056_REG_BUSVOLT) {  in rtq6056_adc_set_samp_freq()
225 		rm_field = priv->rm_fields[F_VBUSCT];  in rtq6056_adc_set_samp_freq()
226 		ct = &priv->vbusct_us;  in rtq6056_adc_set_samp_freq()
228 		return -EINVAL;  in rtq6056_adc_set_samp_freq()
245  * https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf
257 		return -EINVAL;  in rtq6056_adc_set_average()
262 	ret = regmap_field_write(priv->rm_fields[F_AVG], selector);  in rtq6056_adc_set_average()
266 	priv->avg_sample = rtq6056_avg_sample_list[selector];  in rtq6056_adc_set_average()
276 	if (ch->address == RTQ6056_REG_SHUNTVOLT)  in rtq6056_adc_get_sample_freq()
277 		sample_time = priv->vshuntct_us;  in rtq6056_adc_get_sample_freq()
278 	else if (ch->address == RTQ6056_REG_BUSVOLT)  in rtq6056_adc_get_sample_freq()
279 		sample_time = priv->vbusct_us;  in rtq6056_adc_get_sample_freq()
281 		sample_time = priv->vshuntct_us + priv->vbusct_us;  in rtq6056_adc_get_sample_freq()
282 		sample_time *= priv->avg_sample;  in rtq6056_adc_get_sample_freq()
302 		*val = priv->avg_sample;  in rtq6056_adc_read_raw()
307 		return -EINVAL;  in rtq6056_adc_read_raw()
328 		return -EINVAL;  in rtq6056_adc_read_avail()
351 		ret = -EINVAL;  in rtq6056_adc_write_raw()
371 	return sysfs_emit(label, "%s\n", rtq6056_channel_labels[chan->channel]);  in rtq6056_adc_read_label()
381 		dev_err(priv->dev, "Invalid resistor [%d]\n", resistor_uohm);  in rtq6056_set_shunt_resistor()
382 		return -EINVAL;  in rtq6056_set_shunt_resistor()
387 	ret = regmap_write(priv->regmap, RTQ6056_REG_CALIBRATION, calib_val);  in rtq6056_set_shunt_resistor()
391 	priv->shunt_resistor_uohm = resistor_uohm;  in rtq6056_set_shunt_resistor()
400 	int vals[2] = { priv->shunt_resistor_uohm, 1000000 };  in shunt_resistor_show()
451 	struct iio_dev *indio_dev = pf->indio_dev;  in rtq6056_buffer_trigger_handler()
453 	struct device *dev = priv->dev;  in rtq6056_buffer_trigger_handler()
465 	for_each_set_bit(bit, indio_dev->active_scan_mask, indio_dev->masklength) {  in rtq6056_buffer_trigger_handler()
468 		ret = regmap_read(priv->regmap, addr, &raw);  in rtq6056_buffer_trigger_handler()
481 	iio_trigger_notify_done(indio_dev->trig);  in rtq6056_buffer_trigger_handler()
491 	regmap_field_write(priv->rm_fields[F_OPMODE], 0);  in rtq6056_enter_shutdown_state()
529 	struct device *dev = &i2c->dev;  in rtq6056_probe()
534 	if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_WORD_DATA))  in rtq6056_probe()
535 		return -EOPNOTSUPP;  in rtq6056_probe()
539 		return -ENOMEM;  in rtq6056_probe()
542 	priv->dev = dev;  in rtq6056_probe()
543 	priv->vshuntct_us = priv->vbusct_us = 1037;  in rtq6056_probe()
544 	priv->avg_sample = 1;  in rtq6056_probe()
552 	priv->regmap = regmap;  in rtq6056_probe()
560 		return dev_err_probe(dev, -ENODEV,  in rtq6056_probe()
563 	ret = devm_regmap_field_bulk_alloc(dev, regmap, priv->rm_fields,  in rtq6056_probe()
569 	 * By default, configure average sample as 1, bus and shunt conversion  in rtq6056_probe()
589 	/* By default, use 2000 micro-Ohm resistor */  in rtq6056_probe()
591 	device_property_read_u32(dev, "shunt-resistor-micro-ohms",  in rtq6056_probe()
597 				     "Failed to init shunt resistor\n");  in rtq6056_probe()
599 	indio_dev->name = "rtq6056";  in rtq6056_probe()
600 	indio_dev->modes = INDIO_DIRECT_MODE;  in rtq6056_probe()
601 	indio_dev->channels = rtq6056_channels;  in rtq6056_probe()
602 	indio_dev->num_channels = ARRAY_SIZE(rtq6056_channels);  in rtq6056_probe()
603 	indio_dev->info = &rtq6056_info;  in rtq6056_probe()
620 	return regmap_field_write(priv->rm_fields[F_OPMODE], 0);  in rtq6056_runtime_suspend()
628 	ret = regmap_field_write(priv->rm_fields[F_OPMODE], RTQ6056_CONT_ALLON);  in rtq6056_runtime_resume()
632 	sample_rdy_time_us = priv->vbusct_us + priv->vshuntct_us;  in rtq6056_runtime_resume()
633 	sample_rdy_time_us *= priv->avg_sample;  in rtq6056_runtime_resume()