staging:iio: Fix adis16260 channel offsets and scales

Most of the channel offsets and scales in the adis16260 are incorrect:
	* Temperature scale is off by a factor of 1000
	* Voltage scale is off by a factor of 1000
	* Temperature offset is completely wrong

This patch fixes these issues. Also use the IIO_DEGREE_TO_RAD for the angle
velocity 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/gyro/adis16260_core.c b/drivers/staging/iio/gyro/adis16260_core.c
index 9571c03..aa964a2 100644 (file)
--- a/drivers/staging/iio/gyro/adis16260_core.c
+++ b/drivers/staging/iio/gyro/adis16260_core.c
@@ -498,28 +498,33 @@ static int adis16260_read_raw(struct iio_dev *indio_dev,
                switch (chan->type) {
                case IIO_ANGL_VEL:
                        *val = 0;
-                       if (spi_get_device_id(st->us)->driver_data)
-                               *val2 = 320;
-                       else
-                               *val2 = 1278;
+                       if (spi_get_device_id(st->us)->driver_data) {
+                               /* 0.01832 degree / sec */
+                               *val2 = IIO_DEGREE_TO_RAD(18320);
+                       } else {
+                               /* 0.07326 degree / sec */
+                               *val2 = IIO_DEGREE_TO_RAD(73260);
+                       }
                        return IIO_VAL_INT_PLUS_MICRO;
                case IIO_VOLTAGE:
-                       *val = 0;
-                       if (chan->channel == 0)
-                               *val2 = 18315;
-                       else
-                               *val2 = 610500;
+                       if (chan->channel == 0) {
+                               *val = 1;
+                               *val2 = 831500; /* 1.8315 mV */
+                       } else {
+                               *val = 0;
+                               *val2 = 610500; /* 610.5 uV */
+                       }
                        return IIO_VAL_INT_PLUS_MICRO;
                case IIO_TEMP:
-                       *val = 0;
-                       *val2 = 145300;
+                       *val = 145;
+                       *val2 = 300000; /* 0.1453 C */
                        return IIO_VAL_INT_PLUS_MICRO;
                default:
                        return -EINVAL;
                }
                break;
        case IIO_CHAN_INFO_OFFSET:
-               *val = 25;
+               *val = 250000 / 1453; /* 25 C = 0x00 */
                return IIO_VAL_INT;
        case IIO_CHAN_INFO_CALIBBIAS:
                switch (chan->type) {