linux-kernel - [PATCH v1 01/17] iio: chemical: bme680: Fix pressure value output

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Date: Mon, 27 May 2024 20:37:49 +0200
From: Vasileios Amoiridis <vassilisamir@...il.com>
To: jic23@...nel.org,
	lars@...afoo.de
Cc: himanshujha199640@...il.com,
	linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Vasileios Amoiridis <vassilisamir@...il.com>
Subject: [PATCH v1 01/17] iio: chemical: bme680: Fix pressure value output

The IIO standard units are measured in kPa while the driver
is using hPa.

Apart from checking the userspace value itself, it is mentioned also
in the Bosch API [1] that the pressure value is in Pascal.

[1]: https://github.com/boschsensortec/BME68x_SensorAPI/blob/v4.4.8/bme68x_defs.h#L742
Fixes: 1b3bd8592780 ("iio: chemical: Add support for Bosch BME680 sensor")
Signed-off-by: Vasileios Amoiridis <vassilisamir@...il.com>
---
 drivers/iio/chemical/bme680_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/chemical/bme680_core.c b/drivers/iio/chemical/bme680_core.c
index ef5e0e46fd34..2c40c13fe97a 100644
--- a/drivers/iio/chemical/bme680_core.c
+++ b/drivers/iio/chemical/bme680_core.c
@@ -678,7 +678,7 @@ static int bme680_read_press(struct bme680_data *data,
 	}
 
 	*val = bme680_compensate_press(data, adc_press);
-	*val2 = 100;
+	*val2 = 1000;
 	return IIO_VAL_FRACTIONAL;
 }
 
-- 
2.25.1