[PATCH] button: adc: set state to pressed when the voltage is closest to nominal

Tom Rini trini at konsulko.com
Fri Feb 11 18:07:12 CET 2022

On Wed, Feb 02, 2022 at 01:04:04PM -0500, Peter Cai wrote:

> 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 <peter at typeblog.net>

Applied to u-boot/master, thanks!

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