Add pull-up/pull-down flags to the gpio line get and set ioctl() calls. Use cases include a push button that does not have an external resistor. Addition use cases described by Limor Fried (ladyada) of Adafruit in this PR for Adafruit_Blinka Python lib: https://github.com/adafruit/Adafruit_Blinka/pull/59 Signed-off-by: Drew Fustini <drew@pdp7.com> Link: https://lore.kernel.org/r/20190921102522.8970-1-drew@pdp7.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org> |
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