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SubjectRe: [PATCH v2 1/1] iio/scmi: Add reading "raw" attribute.
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Hi Jonathan,

Thank you for review!

Regards,
Andriy.

On 30.09.21 19:33, Jonathan Cameron wrote:
> CAUTION: This email originated from outside of the organization.
> Do not click links or open attachments unless you recognize the sender and know the content is safe.
>
>
> On Mon, 27 Sep 2021 16:22:02 +0300
> Andriy Tryshnivskyy <andriy.tryshnivskyy@opensynergy.com> wrote:
>
>> Add IIO_CHAN_INFO_RAW to the mask and implement corresponding
>> reading "raw" attribute in scmi_iio_read_raw.
>>
>> Signed-off-by: Andriy Tryshnivskyy <andriy.tryshnivskyy@opensynergy.com>
> Hi Andriy,
>
> Looks good to me, but I'll leave it on list to get feedback form the
> driver maintainer for this one.
>
> Feel free to poke if no reply in next 2 weeks.
>
> Thanks,
>
> Jonathan
>
>> ---
>> drivers/iio/common/scmi_sensors/scmi_iio.c | 45 +++++++++++++++++++++-
>> 1 file changed, 44 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/iio/common/scmi_sensors/scmi_iio.c b/drivers/iio/common/scmi_sensors/scmi_iio.c
>> index 7cf2bf282cef..c6a9dc6ad140 100644
>> --- a/drivers/iio/common/scmi_sensors/scmi_iio.c
>> +++ b/drivers/iio/common/scmi_sensors/scmi_iio.c
>> @@ -286,6 +286,9 @@ static int scmi_iio_read_raw(struct iio_dev *iio_dev,
>> struct scmi_iio_priv *sensor = iio_priv(iio_dev);
>> s8 scale;
>> int ret;
>> + int err;
>> + u32 sensor_config;
>> + struct scmi_sensor_reading readings[SCMI_IIO_NUM_OF_AXIS];
>>
>> switch (mask) {
>> case IIO_CHAN_INFO_SCALE:
>> @@ -300,6 +303,45 @@ static int scmi_iio_read_raw(struct iio_dev *iio_dev,
>> case IIO_CHAN_INFO_SAMP_FREQ:
>> ret = scmi_iio_get_odr_val(iio_dev, val, val2);
>> return ret ? ret : IIO_VAL_INT_PLUS_MICRO;
>> + case IIO_CHAN_INFO_RAW:
>> + sensor_config = FIELD_PREP(SCMI_SENS_CFG_SENSOR_ENABLED_MASK,
>> + SCMI_SENS_CFG_SENSOR_ENABLE);
>> + err = sensor->handle->sensor_ops->config_set(
>> + sensor->handle, sensor->sensor_info->id, sensor_config);
>> + if (err) {
>> + dev_err(&iio_dev->dev,
>> + "Error in enabling sensor %s err %d",
>> + sensor->sensor_info->name, err);
>> + return err;
>> + }
>> +
>> + err = sensor->handle->sensor_ops->reading_get_timestamped(
>> + sensor->handle, sensor->sensor_info->id,
>> + sensor->sensor_info->num_axis, readings);
>> + if (err) {
>> + dev_err(&iio_dev->dev,
>> + "Error in reading raw attribute for sensor %s err %d",
>> + sensor->sensor_info->name, err);
>> + return err;
>> + }
>> +
>> + sensor_config = FIELD_PREP(SCMI_SENS_CFG_SENSOR_ENABLED_MASK,
>> + SCMI_SENS_CFG_SENSOR_DISABLE);
>> + err = sensor->handle->sensor_ops->config_set(
>> + sensor->handle, sensor->sensor_info->id, sensor_config);
>> + if (err) {
>> + dev_err(&iio_dev->dev,
>> + "Error in enabling sensor %s err %d",
>> + sensor->sensor_info->name, err);
>> + return err;
>> + }
>> + /* Check if raw value fits 32 bits */
>> + if (readings[ch->scan_index].value < INT_MIN ||
>> + readings[ch->scan_index].value > INT_MAX)
>> + return -ERANGE;
>> + /* Use 32-bit value, since practically there is no need in 64 bits */
>> + *val = (int)readings[ch->scan_index].value;
>> + return IIO_VAL_INT;
>> default:
>> return -EINVAL;
>> }
>> @@ -381,7 +423,8 @@ static void scmi_iio_set_data_channel(struct iio_chan_spec *iio_chan,
>> iio_chan->type = type;
>> iio_chan->modified = 1;
>> iio_chan->channel2 = mod;
>> - iio_chan->info_mask_separate = BIT(IIO_CHAN_INFO_SCALE);
>> + iio_chan->info_mask_separate =
>> + BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_RAW);
>> iio_chan->info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ);
>> iio_chan->info_mask_shared_by_type_available =
>> BIT(IIO_CHAN_INFO_SAMP_FREQ);
>

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