From: Beomho Seo Date: Wed, 2 Apr 2014 08:15:00 +0000 (+0100) Subject: iio: ak8975: Fix calculation formula for convert micro tesla to gauss unit X-Git-Tag: v3.14-rc3~12^2~1^2~3 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bef44abccb2677e8d16e50b75316d4fd1061be81;p=pandora-kernel.git iio: ak8975: Fix calculation formula for convert micro tesla to gauss unit This effects the reported scale of the raw values, and thus userspace applications that use this value. One micro tesla equal 0.01 gauss. So I have fixed calculation formula And add RAW_TO_GAUSS macro. ASA is in the range of 0 to 255. If multiply 0.003, calculation result(in_magn_[*]_scale) is always 0. So multiply 3000 and return and IIO_VAL_INT_PLUS_MICRO. As a result, read_raw call back function return accurate scale value. Signed-off-by: Beomho Seo Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron --- Reading git-diff-tree failed