Re: [PATCH v4 3/5] iio: adc: mp2629: Add support for mp2629 ADC driver

Andy Shevchenko
2020-03-22T23:32:50Z

On Mon, Mar 23, 2020 at 12:47 AM Saravanan Sekar <sravanhome@gmail.com> wrote:
>
> Add support for 8-bit resolution ADC readings for input power
> supply and battery charging measurement. Provides voltage, current
> readings to mp2629 power supply driver.

...

> +#include <linux/platform_device.h>

> +#include <linux/of_device.h>

Don't see users of it.

> +#include <linux/module.h>
> +#include <linux/mutex.h>
> +#include <linux/regulator/consumer.h>

> +#include <linux/sysfs.h>

Any users?

> +#include <linux/regmap.h>

Perhaps ordered?

> +#include <linux/iio/iio.h>
> +#include <linux/iio/machine.h>
> +#include <linux/iio/driver.h>

+ blank line?

> +#include <linux/mfd/mp2629.h>

...

> +static int mp2629_read_raw(struct iio_dev *indio_dev,
> + struct iio_chan_spec const *chan,
> + int *val, int *val2, long mask)
> +{
> + struct mp2629_adc *info = iio_priv(indio_dev);
> + unsigned int rval;
> + int ret;
> +
> + switch (mask) {
> + case IIO_CHAN_INFO_RAW:
> + ret = regmap_read(info->regmap, chan->address, &rval);
> + if (ret < 0)
> + return ret;
> +
> + if (chan->address == MP2629_INPUT_VOLT)

> + rval &= 0x7f;

GENMASK() ?

> + *val = rval;
> + return IIO_VAL_INT;

> + return 0;
> +}

...

> + void **pdata = pdev->dev.platform_data;

Same Qs as per other patch.

...

> + indio_dev->dev.of_node = pdev->dev.of_node;

Jonathan, doesn't IIO core do this for all?

--
With Best Regards,
Andy Shevchenko