staging:iio:adis16130: Report scale and offset

Report scale and offset for the temperature and voltage channels.

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

diff --git a/drivers/staging/iio/gyro/adis16130_core.c b/drivers/staging/iio/gyro/adis16130_core.c
index 2537f59..8979435 100644 (file)
--- a/drivers/staging/iio/gyro/adis16130_core.c
+++ b/drivers/staging/iio/gyro/adis16130_core.c
@@ -78,14 +78,47 @@ static int adis16130_read_raw(struct iio_dev *indio_dev,
        int ret;
        u32 temp;
 
-       /* Take the iio_dev status lock */
-       mutex_lock(&indio_dev->mlock);
-       ret =  adis16130_spi_read(indio_dev, chan->address, &temp);
-       mutex_unlock(&indio_dev->mlock);
-       if (ret)
-               return ret;
-       *val = temp;
-       return IIO_VAL_INT;
+       switch (mask) {
+       case IIO_CHAN_INFO_RAW:
+               /* Take the iio_dev status lock */
+               mutex_lock(&indio_dev->mlock);
+               ret = adis16130_spi_read(indio_dev, chan->address, &temp);
+               mutex_unlock(&indio_dev->mlock);
+               if (ret)
+                       return ret;
+               *val = temp;
+               return IIO_VAL_INT;
+       case IIO_CHAN_INFO_SCALE:
+               switch (chan->type) {
+               case IIO_ANGL_VEL:
+                       /* 0 degree = 838860, 250 degree = 14260608 */
+                       *val = 250;
+                       *val2 = 336440817; /* RAD_TO_DEGREE(14260608 - 8388608) */
+                       return IIO_VAL_FRACTIONAL;
+               case IIO_TEMP:
+                       /* 0C = 8036283, 105C = 9516048 */
+                       *val = 105000;
+                       *val2 = 9516048 - 8036283;
+                       return IIO_VAL_FRACTIONAL;
+               default:
+                       return -EINVAL;
+               }
+               break;
+       case IIO_CHAN_INFO_OFFSET:
+               switch (chan->type) {
+               case IIO_ANGL_VEL:
+                       *val = -8388608;
+                       return IIO_VAL_INT;
+               case IIO_TEMP:
+                       *val = -8036283;
+                       return IIO_VAL_INT;
+               default:
+                       return -EINVAL;
+               }
+               break;
+       }
+
+       return -EINVAL;
 }
 
 static const struct iio_chan_spec adis16130_channels[] = {
@@ -93,13 +126,17 @@ static const struct iio_chan_spec adis16130_channels[] = {
                .type = IIO_ANGL_VEL,
                .modified = 1,
                .channel2 = IIO_MOD_Z,
-               .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+               .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+                       BIT(IIO_CHAN_INFO_SCALE) |
+                       BIT(IIO_CHAN_INFO_OFFSET),
                .address = ADIS16130_RATEDATA,
        }, {
                .type = IIO_TEMP,
                .indexed = 1,
                .channel = 0,
-               .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+               .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+                       BIT(IIO_CHAN_INFO_SCALE) |
+                       BIT(IIO_CHAN_INFO_OFFSET),
                .address = ADIS16130_TEMPDATA,
        }
 };