On Thu, 18 Jul 2019 09:27:34 +0300
Beniamin Bia <beniamin.bia@xxxxxxxxxx> wrote:
> Support for register access was added for devices which have software
> mode.
>
> Signed-off-by: Beniamin Bia <beniamin.bia@xxxxxxxxxx>
> Acked-by: Jonathan Cameron <jic23@xxxxxxxxxx>
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)
