Re: [PATCH 5/5] iio: adc: ad7606: Add debug mode for ad7616

[Jonathan Cameron <jic23@kernel.org>]

On Thu, 18 Jul 2019 09:27:34 +0300
Beniamin Bia <beniamin.bia@analog.com> wrote:

> Support for register access was added for devices which have software
> mode.
> 
> Signed-off-by: Beniamin Bia <beniamin.bia@analog.com>
> Acked-by: Jonathan Cameron <jic23@kernel.org>

Applied to the togreg branch of iio.git and pushed out as testing for
the autobuilders to play with it.

Thanks,

Jonathan

> ---
> Changes in v2:
> -nothing changed
> 
>  drivers/iio/adc/ad7606.c | 33 ++++++++++++++++++++++++++++++++-
>  1 file changed, 32 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c
> index be2330c8b277..ed2d08437e5d 100644
> --- a/drivers/iio/adc/ad7606.c
> +++ b/drivers/iio/adc/ad7606.c
> @@ -60,6 +60,29 @@ static int ad7606_reset(struct ad7606_state *st)
>  	return -ENODEV;
>  }
>  
> +static int ad7606_reg_access(struct iio_dev *indio_dev,
> +			     unsigned int reg,
> +			     unsigned int writeval,
> +			     unsigned int *readval)
> +{
> +	struct ad7606_state *st = iio_priv(indio_dev);
> +	int ret;
> +
> +	mutex_lock(&st->lock);
> +	if (readval) {
> +		ret = st->bops->reg_read(st, reg);
> +		if (ret < 0)
> +			goto err_unlock;
> +		*readval = ret;
> +		ret = 0;
> +	} else {
> +		ret = st->bops->reg_write(st, reg, writeval);
> +	}
> +err_unlock:
> +	mutex_unlock(&st->lock);
> +	return ret;
> +}
> +
>  static int ad7606_read_samples(struct ad7606_state *st)
>  {
>  	unsigned int num = st->chip_info->num_channels;
> @@ -501,6 +524,14 @@ static const struct iio_info ad7606_info_os_and_range = {
>  	.validate_trigger = &ad7606_validate_trigger,
>  };
>  
> +static const struct iio_info ad7606_info_os_range_and_debug = {
> +	.read_raw = &ad7606_read_raw,
> +	.write_raw = &ad7606_write_raw,
> +	.debugfs_reg_access = &ad7606_reg_access,
> +	.attrs = &ad7606_attribute_group_os_and_range,
> +	.validate_trigger = &ad7606_validate_trigger,
> +};
> +
>  static const struct iio_info ad7606_info_os = {
>  	.read_raw = &ad7606_read_raw,
>  	.write_raw = &ad7606_write_raw,
> @@ -617,7 +648,7 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
>  
>  		/* After reset, in software mode, ±10 V is set by default */
>  		memset32(st->range, 2, ARRAY_SIZE(st->range));
> -		indio_dev->info = &ad7606_info_os_and_range;
> +		indio_dev->info = &ad7606_info_os_range_and_debug;
>  
>  		ret = st->bops->sw_mode_config(indio_dev);
>  		if (ret < 0)