staging:iio: Fix adis16220 channel offsets and scales

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@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 11 insertions, 8 deletions

diff --git a/drivers/staging/iio/accel/adis16220_core.c b/drivers/staging/iio/accel/adis16220_core.c
index c755089c7117..eaadd9df3f78 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;