gpio: bcm281xx: Centralize register locking

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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>

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Markus Mayer 2014-01-21 16:10:41 -08:00 • committed by Linus Walleij

parent d762bae45a

commit bdb93c03c5

1 changed files with 49 additions and 33 deletions

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82

drivers/gpio/gpio-bcm-kona.c

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