[PATCH v3 1/2] iio: pressure: ms5611: Add IIO_CHAN_INFO_SCALE to mask

From: Daniel Baluta
Date: Wed Feb 03 2016 - 11:48:15 EST


This allows data exported via buffer interface to be converted
to standard units in userspace.

Signed-off-by: Daniel Baluta <daniel.baluta@xxxxxxxxx>
---
drivers/iio/pressure/ms5611_core.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/pressure/ms5611_core.c b/drivers/iio/pressure/ms5611_core.c
index 2f3d9b4..6cf0e55 100644
--- a/drivers/iio/pressure/ms5611_core.c
+++ b/drivers/iio/pressure/ms5611_core.c
@@ -201,6 +201,18 @@ static int ms5611_read_raw(struct iio_dev *indio_dev,
default:
return -EINVAL;
}
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_TEMP:
+ *val = 10;
+ return IIO_VAL_INT;
+ case IIO_PRESSURE:
+ *val = 0;
+ *val2 = 1000;
+ return IIO_VAL_INT_PLUS_MICRO;
+ default:
+ return -EINVAL;
+ }
}

return -EINVAL;
@@ -218,11 +230,13 @@ static struct ms5611_chip_info chip_info_tbl[] = {
static const struct iio_chan_spec ms5611_channels[] = {
{
.type = IIO_PRESSURE,
- .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+ BIT(IIO_CHAN_INFO_SCALE),
},
{
.type = IIO_TEMP,
- .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+ BIT(IIO_CHAN_INFO_SCALE),
}
};

--
2.5.0