staging:iio: Fix adis16204 channel offsets and scales

Most of the channel offsets and scales in the adis16204 are incorrect:
	* Temperature scale is off by a factor of 1000
	* Voltage scale is off by a factor of 1000
	* Acceleration is scale is in g instead of m/(s**2)
	* 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>

diff --git a/drivers/staging/iio/accel/adis16204_core.c b/drivers/staging/iio/accel/adis16204_core.c
index 05bdb7c2c8e3f100953c8b0fde872ae367f26c45..c6234c2f46aabdac362921e903fcdfa955f4a8a8 100644 (file)
--- a/drivers/staging/iio/accel/adis16204_core.c
+++ b/drivers/staging/iio/accel/adis16204_core.c
@@ -317,26 +317,28 @@ static int adis16204_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 = 1220;
-                       else
-                               *val2 = 610;
+                       if (chan->channel == 0) {
+                               *val = 1;
+                               *val2 = 220000; /* 1.22 mV */
+                       } else {
+                               *val = 0;
+                               *val2 = 610000; /* 0.61 mV */
+                       }
                        return IIO_VAL_INT_PLUS_MICRO;
                case IIO_TEMP:
-                       *val = 0;
-                       *val2 = -470000;
+                       *val = -470; /* 0.47 C */
+                       *val2 = 0;
                        return IIO_VAL_INT_PLUS_MICRO;
                case IIO_ACCEL:
                        *val = 0;
                        switch (chan->channel2) {
                        case IIO_MOD_X:
                        case IIO_MOD_ROOT_SUM_SQUARED_X_Y:
-                               *val2 = 17125;
+                               *val2 = IIO_G_TO_M_S_2(17125); /* 17.125 mg */
                                break;
                        case IIO_MOD_Y:
                        case IIO_MOD_Z:
-                               *val2 = 8407;
+                               *val2 = IIO_G_TO_M_S_2(8407); /* 8.407 mg */
                                break;
                        }
                        return IIO_VAL_INT_PLUS_MICRO;
@@ -345,7 +347,7 @@ static int adis16204_read_raw(struct iio_dev *indio_dev,
                }
                break;
        case IIO_CHAN_INFO_OFFSET:
-               *val = 25;
+               *val = 25000 / -470 - 1278; /* 25 C = 1278 */
                return IIO_VAL_INT;
        case IIO_CHAN_INFO_CALIBBIAS:
        case IIO_CHAN_INFO_PEAK: