[PATCH v3 1/2] iio: adc: rn5t618: Add iio map
From: Andreas Kemnade <andreas@kemnade.info>
Date: 2021-07-12 21:21:27
Also in:
linux-iio, lkml
Subsystem:
iio subsystem and drivers, the rest · Maintainers:
Jonathan Cameron, Linus Torvalds
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> --- Changes in v3: - none Changes in v2: - provide consumer mapping via iio_map instead of devicetree drivers/iio/adc/rn5t618-adc.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
diff --git a/drivers/iio/adc/rn5t618-adc.c b/drivers/iio/adc/rn5t618-adc.c
index 7010c4276947..c56fccb2c8e1 100644
--- a/drivers/iio/adc/rn5t618-adc.c
+++ b/drivers/iio/adc/rn5t618-adc.c@@ -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); }
--
2.30.2