Commit 1a844ddf authored by Andreas Kemnade's avatar Andreas Kemnade Committed by Sebastian Reichel
Browse files

iio: adc: rn5t618: Add iio map 



Add iio map to allow power driver to read out values as a consumer.
This approach does not block later addition of devicetree support
which would be helpful if there is an in-kernel consumer for AIN0/1.

Signed-off-by: default avatarAndreas Kemnade <andreas@kemnade.info>
Acked-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent 38334231

drivers/iio/adc/rn5t618-adc.c

+23 −0
Original line number Diff line number Diff line
@@ -16,6 +16,8 @@ 
#include <linux/completion.h>

#include <linux/regmap.h>

#include <linux/iio/iio.h>

#include <linux/iio/driver.h>

#include <linux/iio/machine.h>

#include <linux/slab.h>



#define RN5T618_ADC_CONVERSION_TIMEOUT   (msecs_to_jiffies(500))
@@ -189,6 +191,19 @@ static const struct iio_chan_spec rn5t618_adc_iio_channels[] = { 
	RN5T618_ADC_CHANNEL(AIN0, IIO_VOLTAGE, "AIN0")

};



static struct iio_map rn5t618_maps[] = {

	IIO_MAP("VADP", "rn5t618-power", "vadp"),

	IIO_MAP("VUSB", "rn5t618-power", "vusb"),

	{ /* sentinel */ }

};



static void unregister_map(void *data)

{

	struct iio_dev *iio_dev = (struct iio_dev *) data;



	iio_map_array_unregister(iio_dev);

}



static int rn5t618_adc_probe(struct platform_device *pdev)

{

	int ret;
@@ -239,6 +254,14 @@ static int rn5t618_adc_probe(struct platform_device *pdev) 
		return ret;

	}



	ret = iio_map_array_register(iio_dev, rn5t618_maps);

	if (ret < 0)

		return ret;



	ret = devm_add_action_or_reset(adc->dev, unregister_map, iio_dev);

	if (ret < 0)

		return ret;



	return devm_iio_device_register(adc->dev, iio_dev);

}