linux-toradex.git/Documentation/devicetree/bindings/input/adc-keys.txt, branch master Linux kernel for Apalis and Colibri modules dt-bindings: input: Convert adc-keys to DT schema 2022-07-08T22:17:55+00:00 Rob Herring robh@kernel.org 2022-06-08T21:12:07+00:00 538c64068bb4f212544325f292cd0abecc081cd0 Convert the adc-keys binding to DT schema format. The old binding has 'label' as required, but it should never be required given it's just a human readable description. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220608211207.2058487-6-robh@kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Convert the adc-keys binding to DT schema format.

The old binding has 'label' as required, but it should never be
required given it's just a human readable description.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220608211207.2058487-6-robh@kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
dt-bindings: input: adc-keys: clarify description 2021-01-05T22:22:01+00:00 Heinrich Schuchardt xypron.glpk@gmx.de 2021-01-05T22:20:07+00:00 698dc0cf944772a79a9aa417e647c0f7587e51df The current description of ADC keys is not precise enough. "when this key is pressed" leaves it open if a key is considered pressed below or above the threshold. This has led to confusion: drivers/input/keyboard/adc-keys.c ignores the meaning of thresholds and sets the key that is closest to press-threshold-microvolt. This patch nails down the definitions and provides an interpretation of the supplied example. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20201222110815.24121-1-xypron.glpk@gmx.de Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
The current description of ADC keys is not precise enough.

"when this key is pressed" leaves it open if a key is considered pressed
below or above the threshold. This has led to confusion:
drivers/input/keyboard/adc-keys.c ignores the meaning of thresholds and
sets the key that is closest to press-threshold-microvolt.

This patch nails down the definitions and provides an interpretation of the
supplied example.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201222110815.24121-1-xypron.glpk@gmx.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: add ADC resistor ladder driver 2016-08-30T03:00:58+00:00 Alexandre Belloni alexandre.belloni@free-electrons.com 2016-08-30T02:57:06+00:00 680772647d96ed853d20f837a2726151f24d8b20 A common way of multiplexing buttons on a single input in cheap devices is to use a resistor ladder on an ADC. This driver supports that configuration by polling an ADC channel provided by IIO. Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
A common way of multiplexing buttons on a single input in cheap devices is
to use a resistor ladder on an ADC. This driver supports that configuration
by polling an ADC channel provided by IIO.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>