[PATCH v2 09/24] staging:iio:cdc:ad7150: Add sampling_frequency support

[Jonathan Cameron <jic23@kernel.org>]

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Device uses a fixed sampling frequency. Let us expose it to userspace.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210207154623.433442-10-jic23@kernel.org
---
 drivers/staging/iio/cdc/ad7150.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
index 8f8e472e3240..54f31aadc92a 100644
--- a/drivers/staging/iio/cdc/ad7150.c
+++ b/drivers/staging/iio/cdc/ad7150.c
@@ -126,6 +126,10 @@ static int ad7150_read_raw(struct iio_dev *indio_dev,
 			return ret;
 		*val = ret;
 
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		/* Strangely same for both 1 and 2 chan parts */
+		*val = 100;
 		return IIO_VAL_INT;
 	default:
 		return -EINVAL;
@@ -449,6 +453,7 @@ static const struct iio_event_spec ad7150_events[] = {
 		.channel = _chan,				\
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |	\
 		BIT(IIO_CHAN_INFO_AVERAGE_RAW),			\
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),\
 		.event_spec = ad7150_events,			\
 		.num_event_specs = ARRAY_SIZE(ad7150_events),	\
 	}
@@ -459,6 +464,7 @@ static const struct iio_event_spec ad7150_events[] = {
 		.channel = _chan,				\
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |	\
 		BIT(IIO_CHAN_INFO_AVERAGE_RAW),			\
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),\
 	}
 
 static const struct iio_chan_spec ad7150_channels[] = {
-- 
2.30.2