iio: magnetometer: ak8974: Break out measurement

This breaks out the measurement code to its own function
so we can handle this without swirling it up with the
big switch() statement inside ak8974_read_raw().

Keep a local s16 helper variable for the signed value
coming out of the measurement before assigning it to the
integer *val. The local variable makes the code easier
to read and the compiler will optimize it if possible.

Cc: Nick Reitemeyer <[email protected]>
Cc: Stephan Gerhold <[email protected]>
Reviewed-by: Michał Mirosław <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>

0 files changed, 0 insertions, 0 deletions