linux-kernel - [RFC PATCH 0/2] Input: adc-joystick: add detachable devices support

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Message-Id: <20221031190159.1341027-1-lis8215@gmail.com>
Date:   Mon, 31 Oct 2022 22:01:57 +0300
From:   Siarhei Volkau <lis8215@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Paul Cercueil <paul@...pouillou.net>,
        Siarhei Volkau <lis8215@...il.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Artur Rojek <contact@...ur-rojek.eu>,
        linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [RFC PATCH 0/2] Input: adc-joystick: add detachable devices support

For detachable or lock-able joysticks the ADC lanes might
be biased to GND or AVDD when the joystick is detached/locked.

One such kind of joystick is found in the Ritmix RZX-50 handheld.
The joystick is non-detachable, although ADC lane biased to power
supply when the "Hold" switch is activated.

To avoid reporting old/broken measurements valid-range is introduced.
When measured value is outside valid-range the driver reports
safe center position for corresponding axis.

Siarhei Volkau (2):
  dt-bindings: adc-joystick: add valid-range
  Input: adc-joystick - add detachable devices support

 .../bindings/input/adc-joystick.yaml          | 62 +++++++++++++++++++
 drivers/input/joystick/adc-joystick.c         | 58 ++++++++++++++++-
 2 files changed, 119 insertions(+), 1 deletion(-)

-- 
2.36.1