tree 59643fd54be7ed6c4ef6dcbc013e9dce1f800668
parent 88a89bc6bc63d9718cf73fac33eb4d241275cc5d
author William A. Kennington III <wak@google.com> 1540539756 -0700
committer William A. Kennington III <wak@google.com> 1540544602 -0700

utility/aspeed: Add gpio name to offset method

Useful for converting from the GPIO name listed in the chip or board
schematics to the offset which would be presented by the kernel. Made
constexpr so that the conversions can be done at compile time.

Ex:
    gpioplus::utility::aspeed::nameToOffset("B3") -> 11

Tested:
    Built and run through the unit test suite.

Change-Id: I9ec859bf8fb6c60f15e149779d1bd3eb94fc1bd6
Signed-off-by: William A. Kennington III <wak@google.com>