iio: gyro: ADXRS450: Add missing scale attributes

Add missing scale attributes.
Temperature data is presented as 10-bit, twos complement number.
Therefore use singed and shift accordingly.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 20 insertions, 4 deletions

diff --git a/drivers/staging/iio/gyro/adxrs450_core.c b/drivers/staging/iio/gyro/adxrs450_core.c
index e832aeabd879..9d3362880d68 100644
--- a/drivers/staging/iio/gyro/adxrs450_core.c
+++ b/drivers/staging/iio/gyro/adxrs450_core.c
@@ -263,7 +263,7 @@ static int adxrs450_read_raw(struct iio_dev *indio_dev,
 {
         int ret;
         s16 t;
-        u16 ut;
+
         switch (mask) {
         case 0:
                 switch (chan->type) {
@@ -276,10 +276,10 @@ static int adxrs450_read_raw(struct iio_dev *indio_dev,
                         break;
                 case IIO_TEMP:
                         ret = adxrs450_spi_read_reg_16(indio_dev,
-                                                       ADXRS450_TEMP1, &ut);
+                                                       ADXRS450_TEMP1, &t);
                         if (ret)
                                 break;
-                        *val = ut;
+                        *val = (t >> 6) + 225;
                         ret = IIO_VAL_INT;
                         break;
                 default:
@@ -287,6 +287,20 @@ static int adxrs450_read_raw(struct iio_dev *indio_dev,
                         break;
                 }
                 break;
+        case IIO_CHAN_INFO_SCALE:
+                switch (chan->type) {
+                case IIO_ANGL_VEL:
+                        *val = 0;
+                        *val2 = 218166;
+                        return IIO_VAL_INT_PLUS_NANO;
+                case IIO_TEMP:
+                        *val = 200;
+                        *val2 = 0;
+                        return IIO_VAL_INT;
+                default:
+                        return -EINVAL;
+                }
+                break;
         case IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW:
                 ret = adxrs450_spi_read_reg_16(indio_dev, ADXRS450_QUAD1, &t);
                 if (ret)
@@ -308,11 +322,13 @@ static const struct iio_chan_spec adxrs450_channels[] = {
                 .modified = 1,
                 .channel2 = IIO_MOD_Z,
                 .info_mask = IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
-                IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SEPARATE_BIT,
+                IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SEPARATE_BIT |
+                IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
         }, {
                 .type = IIO_TEMP,
                 .indexed = 1,
                 .channel = 0,
+                .info_mask = IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
         }
 };