pinctrl/amd: add get_direction handler

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On boot, gpiochip_add_data() initializes the FLAG_IS_OUT bit in
desc->flags iff its gpio_chip does not have ->direction_input() handler,
else it is initialized to 0, which implies the GPIO is an "input".

Later, the sysfs "direction" handler will use gpiod_get_direction() to
get the current direction, but if no ->get_direction() handler is
installed, the result will just be the current (initial) value of flags,
which will always be OUT irregardless of the initial register value.

Add a get_direction() handler to pinctrl-amd to fix this and always
provide the correct value for direction.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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Daniel Kurtz 2018-02-16 12:12:43 -07:00 • committed by Linus Walleij

parent b5520891a3

commit 12b10f47e5

1 changed files with 14 additions and 0 deletions

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drivers/pinctrl/pinctrl-amd.c

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