Commit eb03610a authored Oct 19, 2013 by Peter Meerwald Committed by Jonathan Cameron Oct 20, 2013

iio: Correct description how to convert microtesla to gauss



this just fixes the comment; however, I'm not sure if the driver reports
measurements correctly; the raw values are 0.3 uT / LSB; IIO is supposed
to report magnetic fields in Gauss, so the scale should be around 1/300
(ignoring ASA) -- but value and scale are returned as VAL_INT

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

parent 20728759

drivers/iio/magnetometer/ak8975.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -263,7 +263,7 @@ static int ak8975_setup(struct i2c_client *client)
		*
		* HuT = H * 1229/4096, or roughly, 3/10.
		*
		* Since 1uT = 100 gauss, our final scale factor becomes:
		* Since 1uT = 0.01 gauss, our final scale factor becomes:
		*
		* Hadj = H * ((ASA + 128) / 256) * 3/10 * 100
		* Hadj = H * ((ASA + 128) * 30 / 256