From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ns.pmeerw.net ([87.118.82.44]:40637 "EHLO pmeerw.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751549Ab3JSRRr (ORCPT ); Sat, 19 Oct 2013 13:17:47 -0400 From: Peter Meerwald To: linux-iio@vger.kernel.org Cc: jic23@kernel.org, ldewangan@nvidia.com, Peter Meerwald Subject: [PATCH] iio: Correct description how to convert microtesla to gauss Date: Sat, 19 Oct 2013 19:17:43 +0200 Message-Id: <1382203063-31141-1-git-send-email-pmeerw@pmeerw.net> Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org 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 --- drivers/iio/magnetometer/ak8975.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c index 7105f22..ff284e5 100644 --- a/drivers/iio/magnetometer/ak8975.c +++ b/drivers/iio/magnetometer/ak8975.c @@ -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 -- 1.8.4.1