linux-kernel - Re: [PATCH V1 4/5] iio: accel: bmi088: Make it possible to config scales.

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Message-ID: <CA+U=Dsp_vvANuXUwjKC-6g8daBOCFargRZ0r=AbkCwG9KifgHA@mail.gmail.com>
Date:   Tue, 10 May 2022 10:01:31 +0300
From:   Alexandru Ardelean <ardeleanalex@...il.com>
To:     LI Qingwu <Qing-wu.Li@...ca-geosystems.com.cn>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        mchehab+huawei@...nel.org, linux-iio <linux-iio@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V1 4/5] iio: accel: bmi088: Make it possible to config scales.

On Mon, May 9, 2022 at 4:46 PM LI Qingwu
<Qing-wu.Li@...ca-geosystems.com.cn> wrote:
>
> All the sensors can set the scales by writing the range register 0x41,
> The current driver has no interface to configure it.
> The commit adds the interface for config the scales.

With the warnings fixed:


Reviewed-by: Alexandru Ardelean <ardeleanalex@...il.com>


>
> Signed-off-by: LI Qingwu <Qing-wu.Li@...ca-geosystems.com.cn>
> ---
>  drivers/iio/accel/bmi088-accel-core.c | 32 +++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
>
> diff --git a/drivers/iio/accel/bmi088-accel-core.c b/drivers/iio/accel/bmi088-accel-core.c
> index 44cbe098c093..7c78cfb321ee 100644
> --- a/drivers/iio/accel/bmi088-accel-core.c
> +++ b/drivers/iio/accel/bmi088-accel-core.c
> @@ -237,6 +237,23 @@ static int bmi088_accel_set_sample_freq(struct bmi088_accel_data *data, int val)
>                                   BMI088_ACCEL_MODE_ODR_MASK, regval);
>  }
>
> +static int bmi088_accel_set_scale(struct bmi088_accel_data *data, int val, int val2)
> +{
> +       unsigned int i;
> +       int ret;
> +       int reg;
> +
> +       for (i = 0; i < 4; i++)
> +               if (val == data->chip_info->scale_table[i][0] &&
> +                   val2 == data->chip_info->scale_table[i][1])
> +                       break;
> +
> +       if (i >= 4)
> +               return -EINVAL;
> +
> +       return regmap_write(data->regmap, BMI088_ACCEL_REG_ACC_RANGE, i);
> +}
> +
>  static int bmi088_accel_get_temp(struct bmi088_accel_data *data, int *val)
>  {
>         int ret;
> @@ -368,7 +385,13 @@ static int bmi088_accel_read_avail(struct iio_dev *indio_dev,
>                              const int **vals, int *type, int *length,
>                              long mask)
>  {
> +       struct bmi088_accel_data *data = iio_priv(indio_dev);
>         switch (mask) {
> +       case IIO_CHAN_INFO_SCALE:
> +               *vals = (const int *)data->chip_info->scale_table;
> +               *length = 8;
> +               *type = IIO_VAL_INT_PLUS_MICRO;
> +               return IIO_AVAIL_LIST;
>         case IIO_CHAN_INFO_SAMP_FREQ:
>                 *type = IIO_VAL_INT_PLUS_MICRO;
>                 *vals = bmi088_sample_freqs;
> @@ -388,6 +411,14 @@ static int bmi088_accel_write_raw(struct iio_dev *indio_dev,
>         int ret;
>
>         switch (mask) {
> +       case IIO_CHAN_INFO_SCALE:
> +               ret = pm_runtime_resume_and_get(dev);
> +               if (ret)
> +                       return ret;
> +               ret = bmi088_accel_set_scale(data, val, val2);
> +               pm_runtime_mark_last_busy(dev);
> +               pm_runtime_put_autosuspend(dev);
> +               return ret;
>         case IIO_CHAN_INFO_SAMP_FREQ:
>                 ret = pm_runtime_resume_and_get(dev);
>                 if (ret)
> @@ -410,6 +441,7 @@ static int bmi088_accel_write_raw(struct iio_dev *indio_dev,
>         .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
>                                 BIT(IIO_CHAN_INFO_SAMP_FREQ), \
>         .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
> +                               BIT(IIO_CHAN_INFO_SCALE ), \
>         .scan_index = AXIS_##_axis, \
>  }
>
> --
> 2.25.1
>