Most of the channel offsets and scales in the adis16220 are incorrect:
* Temperature scale is off by a factor of 1000
* Voltage scale is off by a factor of 1000
* Acceleration seems to have a typo "187042" since it should be instead of
"1887042"
* Temperature offset is completely wrong
This patch fixes these issues.
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
drivers/staging/iio/accel/adis16220_core.c | 19 +++++++++++--------
1 file changed, 11 insertions(+), 8 deletions(-)
diff --git a/drivers/staging/iio/accel/adis16220_core.c b/drivers/staging/iio/accel/adis16220_core.c
index c755089..eaadd9d 100644
--- a/drivers/staging/iio/accel/adis16220_core.c
+++ b/drivers/staging/iio/accel/adis16220_core.c
@@ -486,7 +486,7 @@ static int adis16220_read_raw(struct iio_dev *indio_dev,
break;
case IIO_CHAN_INFO_OFFSET:
if (chan->type == IIO_TEMP) {
- *val = 25;
+ *val = 25000 / -470 - 1278; /* 25 C = 1278 */
return IIO_VAL_INT;
}
addrind = 1;
@@ -495,19 +495,22 @@ static int adis16220_read_raw(struct iio_dev *indio_dev,
addrind = 2;
break;
case IIO_CHAN_INFO_SCALE:
- *val = 0;
switch (chan->type) {
case IIO_TEMP:
- *val2 = -470000;
+ *val = -470; /* -0.47 C */
+ *val2 = 0;
return IIO_VAL_INT_PLUS_MICRO;
case IIO_ACCEL:
- *val2 = 1887042;
+ *val2 = IIO_G_TO_M_S_2(19073); /* 19.073 g */
return IIO_VAL_INT_PLUS_MICRO;
case IIO_VOLTAGE:
- if (chan->channel == 0)
- *val2 = 0012221;
- else /* Should really be dependent on VDD */
- *val2 = 305;
+ if (chan->channel == 0) {
+ *val = 1;
+ *val2 = 220700; /* 1.2207 mV */
+ } else {
+ /* Should really be dependent on VDD */
+ *val2 = 305180; /* 305.18 uV */
+ }
return IIO_VAL_INT_PLUS_MICRO;
default:
return -EINVAL;
--
1.7.10.4
--
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