1 // SPDX-License-Identifier: GPL-2.0
10 #include <linux/iio/adc/qcom-vadc-common.h>
23 #include <dt-bindings/iio/qcom,spmi-vadc.h>
75  * samples and measurements queued across different VADC peripherals.
104  * struct adc5_channel_prop - ADC channel property.
133  * struct adc5_chip - ADC private structure.
134  * @regmap: SPMI ADC5 peripheral register map field.
135  * @dev: SPMI ADC5 device.
160 	return regmap_bulk_read(adc->regmap, adc->base + offset, data, len);  in adc5_read()
165 	return regmap_bulk_write(adc->regmap, adc->base + offset, data, len);  in adc5_write()
170 	return regmap_update_bits(adc->regmap, adc->base + offset, mask, val);  in adc5_masked_write()
189 		dev_err(adc->dev, "Invalid data:0x%x\n", *data);  in adc5_read_voltage_data()
190 		return -EINVAL;  in adc5_read_voltage_data()
193 	dev_dbg(adc->dev, "voltage raw code:0x%x\n", *data);  in adc5_read_voltage_data()
217 	return -ETIMEDOUT;  in adc5_poll_wait_eoc()
225 	*data |= (prop->cal_val << ADC5_USR_DIG_PARAM_CAL_VAL_SHIFT);  in adc5_update_dig_param()
229 	*data |= (prop->cal_method << ADC5_USR_DIG_PARAM_CAL_SEL_SHIFT);  in adc5_update_dig_param()
233 	*data |= (prop->decimation << ADC5_USR_DIG_PARAM_DEC_RATIO_SEL_SHIFT);  in adc5_update_dig_param()
252 	buf[1] |= prop->avg_samples;  in adc5_configure()
255 	buf[2] = prop->channel;  in adc5_configure()
259 	buf[3] |= prop->hw_settle_time;  in adc5_configure()
267 	if (!adc->poll_eoc)  in adc5_configure()
268 		reinit_completion(&adc->complete);  in adc5_configure()
279 	ret = adc5_masked_write(adc, ADC_APP_SID, ADC_APP_SID_MASK, prop->sid);  in adc7_configure()
292 	buf[1] |= prop->avg_samples;  in adc7_configure()
295 	buf[2] = prop->channel;  in adc7_configure()
299 	buf[3] |= prop->hw_settle_time;  in adc7_configure()
304 	if (!adc->poll_eoc)  in adc7_configure()
305 		reinit_completion(&adc->complete);  in adc7_configure()
321 	mutex_lock(&adc->lock);  in adc5_do_conversion()
325 		dev_err(adc->dev, "ADC configure failed with %d\n", ret);  in adc5_do_conversion()
329 	if (adc->poll_eoc) {  in adc5_do_conversion()
332 			dev_err(adc->dev, "EOC bit not set\n");  in adc5_do_conversion()
336 		ret = wait_for_completion_timeout(&adc->complete,  in adc5_do_conversion()
339 			dev_dbg(adc->dev, "Did not get completion timeout.\n");  in adc5_do_conversion()
342 				dev_err(adc->dev, "EOC bit not set\n");  in adc5_do_conversion()
350 	mutex_unlock(&adc->lock);  in adc5_do_conversion()
363 	mutex_lock(&adc->lock);  in adc7_do_conversion()
367 		dev_err(adc->dev, "ADC configure failed with %d\n", ret);  in adc7_do_conversion()
372 	wait_for_completion_timeout(&adc->complete, ADC7_CONV_TIMEOUT);  in adc7_do_conversion()
379 		dev_err(adc->dev, "Unexpected conversion fault\n");  in adc7_do_conversion()
380 		ret = -EIO;  in adc7_do_conversion()
387 	mutex_unlock(&adc->lock);  in adc7_do_conversion()
401 	complete(&adc->complete);  in adc5_isr()
412 	for (i = 0; i < adc->nchannels; i++)  in adc5_fwnode_xlate()
413 		if (adc->chan_props[i].channel == iiospec->args[0])  in adc5_fwnode_xlate()
416 	return -EINVAL;  in adc5_fwnode_xlate()
425 	for (i = 0; i < adc->nchannels; i++) {  in adc7_fwnode_xlate()
426 		v_channel = (adc->chan_props[i].sid << ADC_CHANNEL_OFFSET) |  in adc7_fwnode_xlate()
427 			adc->chan_props[i].channel;  in adc7_fwnode_xlate()
428 		if (v_channel == iiospec->args[0])  in adc7_fwnode_xlate()
432 	return -EINVAL;  in adc7_fwnode_xlate()
444 	prop = &adc->chan_props[chan->address];  in adc_read_raw_common()
453 		ret = qcom_adc5_hw_scale(prop->scale_fn_type,  in adc_read_raw_common()
454 			prop->prescale,  in adc_read_raw_common()
455 			adc->data,  in adc_read_raw_common()
462 		return -EINVAL;  in adc_read_raw_common()
633 	struct device *dev = adc->dev;  in adc5_get_fw_channel_data()
645 	if (adc->data->info == &adc7_info) {  in adc5_get_fw_channel_data()
651 	    !data->adc_chans[chan].datasheet_name) {  in adc5_get_fw_channel_data()
653 		return -EINVAL;  in adc5_get_fw_channel_data()
657 	prop->channel = chan;  in adc5_get_fw_channel_data()
658 	prop->sid = sid;  in adc5_get_fw_channel_data()
664 	prop->datasheet_name = channel_name;  in adc5_get_fw_channel_data()
668 		ret = qcom_adc5_decimation_from_dt(value, data->decimation);  in adc5_get_fw_channel_data()
674 		prop->decimation = ret;  in adc5_get_fw_channel_data()
676 		prop->decimation = ADC5_DECIMATION_DEFAULT;  in adc5_get_fw_channel_data()
679 	ret = fwnode_property_read_u32_array(fwnode, "qcom,pre-scaling", varr, 2);  in adc5_get_fw_channel_data()
683 			dev_err(dev, "%02x invalid pre-scaling <%d %d>\n",  in adc5_get_fw_channel_data()
687 		prop->prescale = ret;  in adc5_get_fw_channel_data()
689 		prop->prescale =  in adc5_get_fw_channel_data()
690 			adc->data->adc_chans[prop->channel].prescale_index;  in adc5_get_fw_channel_data()
693 	ret = fwnode_property_read_u32(fwnode, "qcom,hw-settle-time", &value);  in adc5_get_fw_channel_data()
709 			adc->data->info == &adc7_info)  in adc5_get_fw_channel_data()
710 			ret = qcom_adc5_hw_settle_time_from_dt(value, data->hw_settle_2);  in adc5_get_fw_channel_data()
712 			ret = qcom_adc5_hw_settle_time_from_dt(value, data->hw_settle_1);  in adc5_get_fw_channel_data()
715 			dev_err(dev, "%02x invalid hw-settle-time %d us\n",  in adc5_get_fw_channel_data()
719 		prop->hw_settle_time = ret;  in adc5_get_fw_channel_data()
721 		prop->hw_settle_time = VADC_DEF_HW_SETTLE_TIME;  in adc5_get_fw_channel_data()
724 	ret = fwnode_property_read_u32(fwnode, "qcom,avg-samples", &value);  in adc5_get_fw_channel_data()
728 			dev_err(dev, "%02x invalid avg-samples %d\n",  in adc5_get_fw_channel_data()
732 		prop->avg_samples = ret;  in adc5_get_fw_channel_data()
734 		prop->avg_samples = VADC_DEF_AVG_SAMPLES;  in adc5_get_fw_channel_data()
738 		prop->cal_method = ADC5_RATIOMETRIC_CAL;  in adc5_get_fw_channel_data()
740 		prop->cal_method = ADC5_ABSOLUTE_CAL;  in adc5_get_fw_channel_data()
746 	prop->cal_val = ADC5_TIMER_CAL;  in adc5_get_fw_channel_data()
797 		.compatible = "qcom,spmi-adc5",
801 		.compatible = "qcom,spmi-adc7",
805 		.compatible = "qcom,spmi-adc-rev2",
821 	adc->nchannels = device_get_child_node_count(adc->dev);  in adc5_get_fw_data()
822 	if (!adc->nchannels)  in adc5_get_fw_data()
823 		return -EINVAL;  in adc5_get_fw_data()
825 	adc->iio_chans = devm_kcalloc(adc->dev, adc->nchannels,  in adc5_get_fw_data()
826 				       sizeof(*adc->iio_chans), GFP_KERNEL);  in adc5_get_fw_data()
827 	if (!adc->iio_chans)  in adc5_get_fw_data()
828 		return -ENOMEM;  in adc5_get_fw_data()
830 	adc->chan_props = devm_kcalloc(adc->dev, adc->nchannels,  in adc5_get_fw_data()
831 					sizeof(*adc->chan_props), GFP_KERNEL);  in adc5_get_fw_data()
832 	if (!adc->chan_props)  in adc5_get_fw_data()
833 		return -ENOMEM;  in adc5_get_fw_data()
835 	chan_props = adc->chan_props;  in adc5_get_fw_data()
836 	iio_chan = adc->iio_chans;  in adc5_get_fw_data()
837 	adc->data = device_get_match_data(adc->dev);  in adc5_get_fw_data()
838 	if (!adc->data)  in adc5_get_fw_data()
839 		adc->data = &adc5_data_pmic;  in adc5_get_fw_data()
841 	device_for_each_child_node(adc->dev, child) {  in adc5_get_fw_data()
842 		ret = adc5_get_fw_channel_data(adc, &prop, child, adc->data);  in adc5_get_fw_data()
849 			adc->data->adc_chans[prop.channel].scale_fn_type;  in adc5_get_fw_data()
851 		adc_chan = &adc->data->adc_chans[prop.channel];  in adc5_get_fw_data()
853 		iio_chan->channel = prop.channel;  in adc5_get_fw_data()
854 		iio_chan->datasheet_name = prop.datasheet_name;  in adc5_get_fw_data()
855 		iio_chan->extend_name = prop.datasheet_name;  in adc5_get_fw_data()
856 		iio_chan->info_mask_separate = adc_chan->info_mask;  in adc5_get_fw_data()
857 		iio_chan->type = adc_chan->type;  in adc5_get_fw_data()
858 		iio_chan->address = index;  in adc5_get_fw_data()
869 	struct device *dev = &pdev->dev;  in adc5_probe()
876 	regmap = dev_get_regmap(dev->parent, NULL);  in adc5_probe()
878 		return -ENODEV;  in adc5_probe()
886 		return -ENOMEM;  in adc5_probe()
889 	adc->regmap = regmap;  in adc5_probe()
890 	adc->dev = dev;  in adc5_probe()
891 	adc->base = reg;  in adc5_probe()
893 	init_completion(&adc->complete);  in adc5_probe()
894 	mutex_init(&adc->lock);  in adc5_probe()
904 		if (irq_eoc == -EPROBE_DEFER || irq_eoc == -EINVAL)  in adc5_probe()
906 		adc->poll_eoc = true;  in adc5_probe()
909 				       "pm-adc5", adc);  in adc5_probe()
914 	indio_dev->name = pdev->name;  in adc5_probe()
915 	indio_dev->modes = INDIO_DIRECT_MODE;  in adc5_probe()
916 	indio_dev->info = adc->data->info;  in adc5_probe()
917 	indio_dev->channels = adc->iio_chans;  in adc5_probe()
918 	indio_dev->num_channels = adc->nchannels;  in adc5_probe()
925 		.name = "qcom-spmi-adc5",
932 MODULE_ALIAS("platform:qcom-spmi-adc5");