Three months ago Peter Meerwald revised description of device driver[1]. Correctly, device's sensitivity is 0.3 uT/LSB typ and One micro tesla equal 0.01 gauss[2]. So I have fixed calculation formula,And then add RAW_TO_GAUSS macro. Scale are returned as VAL_INT_PLUS_MICRO. Additionally, I have add device name. Tested on exynos4412 board, with following result: -sh-4.1# cat name ak8975 -sh-4.1# cat in_magn_x_raw 80 -sh-4.1# cat in_magn_x_scale 0.003609 Calculate the result 80 x 0.003609 = 0.28872 Gauss. 0.28872 G equal 288.72 mG I think this magnitude value is proper level[3]. [1] http://marc.info/?l=linux-iio&m=138220306822747&w=2 [2] http://en.wikipedia.org/wiki/Gauss_(unit) [3] http://en.wikipedia.org/wiki/Orders_of_magnitude_(magnetic_field) Beomho Seo (2): iio: ak8975: Fix calculation formula for microtesla to gauss unit iio: ak8975: Add device name drivers/iio/magnetometer/ak8975.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) -- Best Regards, -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
