[TOPIC-GPIO] drivers: gpio_mcux: Fix handling of disconnect configuration #19556
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If the gpio flags are passed such that neither GPIO_INPUT or GPIO_OUTPUT is set, we should treat this as a disconnected state. Change the config code to handle that configuration as a GPIO_INPUT so we aren't accidently driving something on the pin. Signed-off-by: Kumar Gala <[email protected]>
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@MaureenHelm its not clear to me if this change makes sense, or if we should treat |
galak
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pabigot
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Oct 2, 2019
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As I read K64P144M120SF5RM.pdf (section 55.3.2) a pin configured for GPIO must be either an input or an output. If that's true, then -ENOTSUP should be returned unless exactly one of GPIO_INPUT and GPIO_OUTPUT is set.
Based on that I'll have to change the 2-pin test to fall back to setting the output pin as input rather than disconnected.
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Closing this as @pabigot PR makes sense to me. Will leave it up to @MaureenHelm to state otherwise. |
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If the gpio flags are passed such that neither GPIO_INPUT or GPIO_OUTPUT
is set, we should treat this as a disconnected state. Change the config
code to handle that configuration as a GPIO_INPUT so we aren't
accidently driving something on the pin.
Signed-off-by: Kumar Gala [email protected]