tree afb30fdc64176939b4ca6f40da02743146dd4694
parent d762bae45a3dd65d02a35b4252598912f7fbcde0
author Markus Mayer <markus.mayer@linaro.org> 1390349441 -0800
committer Linus Walleij <linus.walleij@linaro.org> 1391679226 +0100

gpio: bcm281xx: Centralize register locking

Rather than unlock/re-lock for every write access, unlock a GPIO when
it is requested and re-lock it when it is freed. As a result, the GPIO
helper functions no longer have to deal with unlocking and re-locking
the register.

In addition, only unlock a specific GPIO rather than unlocking the
entire GPIO bank as before.

Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>