staging:iio: Fix adis16240 channel offsets and scales

Most of the channel offsets and scales in the adis16240 are incorrect:
    * Temperature scale is of by a factor of 1000
    * Voltage scale is of by a factor of 1000
    * Temperature offset is completely wrong
	* Peak scale is completely wrong

This patch fixes these issues. Also use the IIO_G_TO_M_S_2 macro for the
acceleration scale since this makes it much easier to compare it to the value
given in the datasheet.

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

diff --git a/drivers/staging/iio/accel/adis16240_core.c b/drivers/staging/iio/accel/adis16240_core.c
index 0fc26a4..35e0939 100644 (file)
--- a/drivers/staging/iio/accel/adis16240_core.c
+++ b/drivers/staging/iio/accel/adis16240_core.c
@@ -373,30 +373,31 @@ static int adis16240_read_raw(struct iio_dev *indio_dev,
        case IIO_CHAN_INFO_SCALE:
                switch (chan->type) {
                case IIO_VOLTAGE:
-                       *val = 0;
-                       if (chan->channel == 0)
-                               *val2 = 4880;
-                       else
+                       if (chan->channel == 0) {
+                               *val = 4;
+                               *val2 = 880000; /* 4.88 mV */
+                               return IIO_VAL_INT_PLUS_MICRO;
+                       } else {
                                return -EINVAL;
-                       return IIO_VAL_INT_PLUS_MICRO;
+                       }
                case IIO_TEMP:
-                       *val = 0;
-                       *val2 = 244000;
+                       *val = 244; /* 0.244 C */
+                       *val2 = 0;
                        return IIO_VAL_INT_PLUS_MICRO;
                case IIO_ACCEL:
                        *val = 0;
-                       *val2 = 504062;
+                       *val2 = IIO_G_TO_M_S_2(51400); /* 51.4 mg */
                        return IIO_VAL_INT_PLUS_MICRO;
                default:
                        return -EINVAL;
                }
                break;
        case IIO_CHAN_INFO_PEAK_SCALE:
-               *val = 6;
-               *val2 = 629295;
+               *val = 0;
+               *val2 = IIO_G_TO_M_S_2(51400); /* 51.4 mg */
                return IIO_VAL_INT_PLUS_MICRO;
        case IIO_CHAN_INFO_OFFSET:
-               *val = 25;
+               *val = 25000 / 244 - 0x133; /* 25 C = 0x133 */
                return IIO_VAL_INT;
        case IIO_CHAN_INFO_CALIBBIAS:
                bits = 10;