On 04/29/11 11:58, michael.hennerich@xxxxxxxxxx wrote:
> 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)
--
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