gpio: mmio: Make pin2mask() a private business

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The vtable call pin2mask() was introducing a vtable function call
in every gpiochip callback for a generic MMIO GPIO chip. This was
not exactly efficient. (Maybe link-time optimization could get rid of
it, I don't know.)

After removing all external calls into this API we can make it a
boolean flag in the struct gpio_chip call and sink the function into
the gpio-mmio driver yielding encapsulation and potential speedups.

Cc: Anton Vorontsov <anton@enomsg.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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This commit is contained in:

Linus Walleij 2017-10-20 16:31:27 +02:00

parent b3222f7147

commit 24efd94bc3

2 changed files with 23 additions and 30 deletions

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45

drivers/gpio/gpio-mmio.c

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8

include/linux/gpio/driver.h

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