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iio: adc: rn5t618: Add iio map

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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: Andreas Kemnade <andreas@kemnade.info>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Andreas Kemnade 2021-07-12 23:21:10 +02:00 committed by Sebastian Reichel
parent 3833423196
commit 1a844ddf06
1 changed files with 23 additions and 0 deletions
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23
drivers/iio/adc/rn5t618-adc.c
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@ -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);
}