1 // SPDX-License-Identifier: GPL-2.0-only
2 /* ADC driver for AXP20X and AXP22X PMICs
5  *	Quentin Schulz <quentin.schulz@free-electrons.com>
108 		.consumer_dev_name = "axp20x-usb-power-supply",
112 		.consumer_dev_name = "axp20x-usb-power-supply",
116 		.consumer_dev_name = "axp20x-ac-power-supply",
120 		.consumer_dev_name = "axp20x-ac-power-supply",
124 		.consumer_dev_name = "axp20x-battery-power-supply",
128 		.consumer_dev_name = "axp20x-battery-power-supply",
132 		.consumer_dev_name = "axp20x-battery-power-supply",
140 		.consumer_dev_name = "axp20x-battery-power-supply",
144 		.consumer_dev_name = "axp20x-battery-power-supply",
148 		.consumer_dev_name = "axp20x-battery-power-supply",
238 	if (chan->type == IIO_CURRENT && chan->channel == AXP20X_BATT_DISCHRG_I)  in axp20x_adc_raw()
243 	*val = axp20x_read_variable_width(info->regmap, chan->address, size);  in axp20x_adc_raw()
255 	*val = axp20x_read_variable_width(info->regmap, chan->address, 12);  in axp22x_adc_raw()
267 	*val = axp20x_read_variable_width(info->regmap, chan->address, 12);  in axp813_adc_raw()
300 		return -EINVAL;  in axp20x_adc_scale_voltage()
318 		return -EINVAL;  in axp813_adc_scale_voltage()
342 		return -EINVAL;  in axp20x_adc_scale_current()
349 	switch (chan->type) {  in axp20x_adc_scale()
351 		return axp20x_adc_scale_voltage(chan->channel, val, val2);  in axp20x_adc_scale()
354 		return axp20x_adc_scale_current(chan->channel, val, val2);  in axp20x_adc_scale()
361 		return -EINVAL;  in axp20x_adc_scale()
368 	switch (chan->type) {  in axp22x_adc_scale()
370 		if (chan->channel != AXP22X_BATT_V)  in axp22x_adc_scale()
371 			return -EINVAL;  in axp22x_adc_scale()
386 		return -EINVAL;  in axp22x_adc_scale()
393 	switch (chan->type) {  in axp813_adc_scale()
395 		return axp813_adc_scale_voltage(chan->channel, val, val2);  in axp813_adc_scale()
406 		return -EINVAL;  in axp813_adc_scale()
416 	ret = regmap_read(info->regmap, AXP20X_GPIO10_IN_RANGE, val);  in axp20x_adc_offset_voltage()
430 		return -EINVAL;  in axp20x_adc_offset_voltage()
441 	switch (chan->type) {  in axp20x_adc_offset()
443 		return axp20x_adc_offset_voltage(indio_dev, chan->channel, val);  in axp20x_adc_offset()
446 		*val = -1447;  in axp20x_adc_offset()
450 		return -EINVAL;  in axp20x_adc_offset()
469 		return -EINVAL;  in axp20x_read_raw()
479 		*val = -2677;  in axp22x_read_raw()
489 		return -EINVAL;  in axp22x_read_raw()
499 		*val = -2667;  in axp813_read_raw()
509 		return -EINVAL;  in axp813_read_raw()
522 	 * for (independently) GPIO0 and GPIO1 when in ADC mode.  in axp20x_write_raw()
525 		return -EINVAL;  in axp20x_write_raw()
528 		return -EINVAL;  in axp20x_write_raw()
532 	switch (chan->channel) {  in axp20x_write_raw()
544 		return -EINVAL;  in axp20x_write_raw()
547 	return regmap_update_bits(info->regmap, AXP20X_GPIO10_IN_RANGE, reg,  in axp20x_write_raw()
566 	return regmap_update_bits(info->regmap, AXP20X_ADC_RATE,  in axp20x_adc_rate()
573 	return regmap_update_bits(info->regmap, AXP20X_ADC_RATE,  in axp22x_adc_rate()
580 	return regmap_update_bits(info->regmap, AXP813_ADC_RATE,  in axp813_adc_rate()
627 	{ .compatible = "x-powers,axp209-adc", .data = (void *)&axp20x_data, },
628 	{ .compatible = "x-powers,axp221-adc", .data = (void *)&axp22x_data, },
629 	{ .compatible = "x-powers,axp813-adc", .data = (void *)&axp813_data, },
635 	{ .name = "axp20x-adc", .driver_data = (kernel_ulong_t)&axp20x_data, },
636 	{ .name = "axp22x-adc", .driver_data = (kernel_ulong_t)&axp22x_data, },
637 	{ .name = "axp813-adc", .driver_data = (kernel_ulong_t)&axp813_data, },
649 	axp20x_dev = dev_get_drvdata(pdev->dev.parent);  in axp20x_probe()
651 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*info));  in axp20x_probe()
653 		return -ENOMEM;  in axp20x_probe()
658 	info->regmap = axp20x_dev->regmap;  in axp20x_probe()
659 	indio_dev->modes = INDIO_DIRECT_MODE;  in axp20x_probe()
661 	if (!dev_fwnode(&pdev->dev)) {  in axp20x_probe()
665 		info->data = (const struct axp_data *)id->driver_data;  in axp20x_probe()
667 		struct device *dev = &pdev->dev;  in axp20x_probe()
669 		info->data = device_get_match_data(dev);  in axp20x_probe()
672 	indio_dev->name = platform_get_device_id(pdev)->name;  in axp20x_probe()
673 	indio_dev->info = info->data->iio_info;  in axp20x_probe()
674 	indio_dev->num_channels = info->data->num_channels;  in axp20x_probe()
675 	indio_dev->channels = info->data->channels;  in axp20x_probe()
678 	regmap_write(info->regmap, AXP20X_ADC_EN1, info->data->adc_en1_mask);  in axp20x_probe()
680 	if (info->data->adc_en2)  in axp20x_probe()
682 		regmap_update_bits(info->regmap, AXP20X_ADC_EN2,  in axp20x_probe()
686 	info->data->adc_rate(info, 100);  in axp20x_probe()
688 	ret = iio_map_array_register(indio_dev, info->data->maps);  in axp20x_probe()
690 		dev_err(&pdev->dev, "failed to register IIO maps: %d\n", ret);  in axp20x_probe()
696 		dev_err(&pdev->dev, "could not register the device\n");  in axp20x_probe()
706 	regmap_write(info->regmap, AXP20X_ADC_EN1, 0);  in axp20x_probe()
708 	if (info->data->adc_en2)  in axp20x_probe()
709 		regmap_write(info->regmap, AXP20X_ADC_EN2, 0);  in axp20x_probe()
722 	regmap_write(info->regmap, AXP20X_ADC_EN1, 0);  in axp20x_remove()
724 	if (info->data->adc_en2)  in axp20x_remove()
725 		regmap_write(info->regmap, AXP20X_ADC_EN2, 0);  in axp20x_remove()
732 		.name = "axp20x-adc",
742 MODULE_DESCRIPTION("ADC driver for AXP20X and AXP22X PMICs");
743 MODULE_AUTHOR("Quentin Schulz <quentin.schulz@free-electrons.com>");