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In the Linux implementation of adc-keys
(drivers/input/keyboard/adc-keys.c), `press-threshold-microvolt` is not
really interpreted as a threshold, but rather as the "nominal voltage"
of the button. When the voltage read from the ADC is closest to a
button's `press-threshold-microvolt`, the button is considered pressed.
This patch reconciles the behavior of button-adc with Linux's adc-keys
such that device trees can be synchronized with minimal modifications.
Signed-off-by: Peter Cai <[email protected]>
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Fix the treshold typo in code by threshold.
Fixes: c0165c85c3 ("button: add a simple Analog to Digital Converter device based button driver")
Suggested-by: Tom Rini <[email protected]>
Signed-off-by: Neil Armstrong <[email protected]>
Acked-by: Marek Szyprowski <[email protected]>
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Add a simple Analog to Digital Converter device based button driver. This
driver binds to the 'adc-keys' device tree node.
Signed-off-by: Marek Szyprowski <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Signed-off-by: Neil Armstrong <[email protected]>
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