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SubjectRe: [PATCH 1/4] iio: light: vl6180: Move range check to integration time setter, cleanup

> This improves code uniformity (range checks for als_gain are also done
> in the setter). Also unmangle rounding and calculation of register value.

nitpick below

> The calculated integration time it_ms is required in the next patch of
> the series.
>
> Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
> ---
> drivers/iio/light/vl6180.c | 18 +++++++++++-------
> 1 file changed, 11 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/iio/light/vl6180.c b/drivers/iio/light/vl6180.c
> index 6e25b724d941..57577d5d18ac 100644
> --- a/drivers/iio/light/vl6180.c
> +++ b/drivers/iio/light/vl6180.c
> @@ -386,16 +386,21 @@ static int vl6180_set_als_gain(struct vl6180_data *data, int val, int val2)
> return -EINVAL;
> }
>
> -static int vl6180_set_it(struct vl6180_data *data, int val2)
> +static int vl6180_set_it(struct vl6180_data *data, int val, int val2)
> {
> - int ret;
> + int ret, it_ms;
> +
> + it_ms = ((val2 + 500) / 1000); /* round to ms */

outer parenthesis not necessary

> + if (val != 0 || it_ms < 1 || it_ms > 512)
> + return -EINVAL;
>
> mutex_lock(&data->lock);
> ret = vl6180_hold(data, true);
> if (ret < 0)
> goto fail;
> - ret = vl6180_write_word(data->client, VL6180_ALS_IT,
> - (val2 - 500) / 1000); /* write value in ms */
> +
> + ret = vl6180_write_word(data->client, VL6180_ALS_IT, it_ms - 1);
> +
> fail:
> vl6180_hold(data, false);
> mutex_unlock(&data->lock);
> @@ -411,15 +416,14 @@ static int vl6180_write_raw(struct iio_dev *indio_dev,
>
> switch (mask) {
> case IIO_CHAN_INFO_INT_TIME:
> - if (val != 0 || val2 < 500 || val2 >= 512500)
> - return -EINVAL;
> + return vl6180_set_it(data, val, val2);
>
> - return vl6180_set_it(data, val2);
> case IIO_CHAN_INFO_HARDWAREGAIN:
> if (chan->type != IIO_LIGHT)
> return -EINVAL;
>
> return vl6180_set_als_gain(data, val, val2);
> +
> default:
> return -EINVAL;
> }
>

--

Peter Meerwald-Stadler
Mobile: +43 664 24 44 418
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