From: Mike Looijmans mike.looijmans@topic.nl
commit 9436f45dd53595e21566a8c6627411077dfdb776 upstream.
The standard unit for temperature is millidegrees Celcius. Adapt the driver to report in millidegrees instead of degrees.
Signed-off-by: Mike Looijmans mike.looijmans@topic.nl Fixes: 1b3bd8592780 ("iio: chemical: Add support for Bosch BME680 sensor"); Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/iio/chemical/bme680_core.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-)
--- a/drivers/iio/chemical/bme680_core.c +++ b/drivers/iio/chemical/bme680_core.c @@ -591,8 +591,7 @@ static int bme680_gas_config(struct bme6 return ret; }
-static int bme680_read_temp(struct bme680_data *data, - int *val, int *val2) +static int bme680_read_temp(struct bme680_data *data, int *val) { struct device *dev = regmap_get_device(data->regmap); int ret; @@ -625,10 +624,9 @@ static int bme680_read_temp(struct bme68 * compensate_press/compensate_humid to get compensated * pressure/humidity readings. */ - if (val && val2) { - *val = comp_temp; - *val2 = 100; - return IIO_VAL_FRACTIONAL; + if (val) { + *val = comp_temp * 10; /* Centidegrees to millidegrees */ + return IIO_VAL_INT; }
return ret; @@ -643,7 +641,7 @@ static int bme680_read_press(struct bme6 s32 adc_press;
/* Read and compensate temperature to get a reading of t_fine */ - ret = bme680_read_temp(data, NULL, NULL); + ret = bme680_read_temp(data, NULL); if (ret < 0) return ret;
@@ -676,7 +674,7 @@ static int bme680_read_humid(struct bme6 u32 comp_humidity;
/* Read and compensate temperature to get a reading of t_fine */ - ret = bme680_read_temp(data, NULL, NULL); + ret = bme680_read_temp(data, NULL); if (ret < 0) return ret;
@@ -769,7 +767,7 @@ static int bme680_read_raw(struct iio_de case IIO_CHAN_INFO_PROCESSED: switch (chan->type) { case IIO_TEMP: - return bme680_read_temp(data, val, val2); + return bme680_read_temp(data, val); case IIO_PRESSURE: return bme680_read_press(data, val, val2); case IIO_HUMIDITYRELATIVE: