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SubjectRe: [PATCH v3 5/6] staging:iio:ad2s90: Add IIO_CHAN_INFO_SCALE to channel spec and read_raw
On Sat,  3 Nov 2018 19:49:47 -0300
Matheus Tavares <matheus.bernardino@usp.br> wrote:

> This patch adds the IIO_CHAN_INFO_SCALE mask to ad2s90_chan and
> implements the relative read behavior at ad2s90_read_raw.
>
> Signed-off-by: Victor Colombo <victorcolombo@gmail.com>
> Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br>
Hi Matheus,

Somewhere in the process, the authorship of this patch changed from
Victor to you (From:). Given the sign off order I've assumed this
was be accident and put it back to Victor.

For reference
git commit --amend --author="Victor Colombo <victorcolombo@gmail.com>"

Whilst the patch was modified a fair bit, the fact you have left Victor
as the first sign-off implies you think it is still substantially
Victor's patch (I agree with that).

Anyhow, shout if you disagree as still time to change it before
I push this tree out as non rebasing (probably later this week).

Whilst things are only visible in testing I can change anything,
but once I push out as togreg, I am committing to that being a stable
platform for others to base their code on so can't fix things like this.

Applied.
Thanks,
Jonathan

> ---
> drivers/staging/iio/resolver/ad2s90.c | 30 +++++++++++++++++++--------
> 1 file changed, 21 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/staging/iio/resolver/ad2s90.c b/drivers/staging/iio/resolver/ad2s90.c
> index 8f79cccf4814..9c168b7410d0 100644
> --- a/drivers/staging/iio/resolver/ad2s90.c
> +++ b/drivers/staging/iio/resolver/ad2s90.c
> @@ -34,17 +34,29 @@ static int ad2s90_read_raw(struct iio_dev *indio_dev,
> int ret;
> struct ad2s90_state *st = iio_priv(indio_dev);
>
> - mutex_lock(&st->lock);
> - ret = spi_read(st->sdev, st->rx, 2);
> - if (ret < 0) {
> + switch (m) {
> + case IIO_CHAN_INFO_SCALE:
> + /* 2 * Pi / 2^12 */
> + *val = 6283; /* mV */
> + *val2 = 12;
> + return IIO_VAL_FRACTIONAL_LOG2;
> + case IIO_CHAN_INFO_RAW:
> + mutex_lock(&st->lock);
> + ret = spi_read(st->sdev, st->rx, 2);
> + if (ret < 0) {
> + mutex_unlock(&st->lock);
> + return ret;
> + }
> + *val = (((u16)(st->rx[0])) << 4) | ((st->rx[1] & 0xF0) >> 4);
> +
> mutex_unlock(&st->lock);
> - return ret;
> - }
> - *val = (((u16)(st->rx[0])) << 4) | ((st->rx[1] & 0xF0) >> 4);
>
> - mutex_unlock(&st->lock);
> + return IIO_VAL_INT;
> + default:
> + break;
> + }
>
> - return IIO_VAL_INT;
> + return -EINVAL;
> }
>
> static const struct iio_info ad2s90_info = {
> @@ -55,7 +67,7 @@ static const struct iio_chan_spec ad2s90_chan = {
> .type = IIO_ANGL,
> .indexed = 1,
> .channel = 0,
> - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
> };
>
> static int ad2s90_probe(struct spi_device *spi)

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