Re: [PATCH v10 3/3] iio: dac: Add AD5529R DAC driver support

[Joshua Crofts <joshua.crofts1@gmail.com>]

On Thu, 27 Aug 2026 09:34:48 +0200
Janani Sunil <janani.sunil@analog.com> wrote:

> +#include <linux/array_size.h>
> +#include <linux/bits.h>
> +#include <linux/delay.h>
> +#include <linux/dev_printk.h>
> +#include <linux/err.h>
> +#include <linux/errno.h>
> +#include <linux/iio/iio.h>

IIO specific headers should go after the generic <linux/*> headers,
it's just convention.

> +#include <linux/module.h>
> +#include <linux/property.h>
> +#include <linux/regmap.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/reset.h>
> +#include <linux/spi/spi.h>
> +#include <linux/types.h>
> +#include <linux/units.h>
> +

...

> +static int ad5529r_write_raw(struct iio_dev *indio_dev,
> +			     struct iio_chan_spec const *chan,
> +			     int val, int val2, long mask)
> +{
> +	struct ad5529r_state *st = iio_priv(indio_dev);
> +	unsigned int reg_addr;
> +
> +	switch (mask) {
> +	case IIO_CHAN_INFO_RAW:
> +		if (val < 0 || val > GENMASK(st->model_data->resolution - 1, 0))

There is a function for this - in_range(), in linux/minmax.h.

> +			return -EINVAL;
> +
> +		reg_addr = AD5529R_REG_DAC_INPUT_A(chan->channel);
> +
> +		return regmap_write(st->regmap_16bit, reg_addr, val);
> +	default:
> +		return -EINVAL;
> +	}
> +}
> +

-- 
Kind regards,
Joshua Crofts