From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
RATE and QUADRATURE_CORRECTION data is formatted as a twos complement number,
and therefore must be handled as type signed short.
TEMP result should be properly shifted.
Dynamic Null Correction is a 10-bit signed number.
Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Acked-by: Jonathan Cameron <jic23@xxxxxxxxx>
---
drivers/staging/iio/gyro/adxrs450_core.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/iio/gyro/adxrs450_core.c b/drivers/staging/iio/gyro/adxrs450_core.c
index d73acff..e71b91c 100644
--- a/drivers/staging/iio/gyro/adxrs450_core.c
+++ b/drivers/staging/iio/gyro/adxrs450_core.c
@@ -126,7 +126,7 @@ static int adxrs450_spi_write_reg_16(struct device *dev,
* @dev: device associated with child of actual iio_dev
* @val: somewhere to pass back the value read
**/
-static int adxrs450_spi_sensor_data(struct device *dev, u16 *val)
+static int adxrs450_spi_sensor_data(struct device *dev, s16 *val)
{
struct spi_message msg;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -217,7 +217,7 @@ static ssize_t adxrs450_read_temp(struct device *dev,
&t);
if (ret)
return ret;
- return sprintf(buf, "%d\n", t);
+ return sprintf(buf, "%d\n", t >> 7);
}
static ssize_t adxrs450_read_quad(struct device *dev,
@@ -225,7 +225,7 @@ static ssize_t adxrs450_read_quad(struct device *dev,
char *buf)
{
int ret;
- u16 t;
+ s16 t;
ret = adxrs450_spi_read_reg_16(dev,
ADXRS450_QUAD1,
&t);
@@ -247,7 +247,7 @@ static ssize_t adxrs450_write_dnc(struct device *dev,
goto error_ret;
ret = adxrs450_spi_write_reg_16(dev,
ADXRS450_DNC1,
- val);
+ val & 0x3FF);
error_ret:
return ret ? ret : len;
}
@@ -257,7 +257,7 @@ static ssize_t adxrs450_read_sensor_data(struct device *dev,
char *buf)
{
int ret;
- u16 t;
+ s16 t;
ret = adxrs450_spi_sensor_data(dev, &t);
if (ret)
--
1.6.0.2
--
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