On Tue, Aug 23, 2016 at 02:18:16PM +0200, Alexandre Belloni wrote:

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 <redacted>
---
Changes in v6:
 - switched to microvolts

Changes in v5:
 - Dmitry's changes
 - s/mvolt/millivolt/


 .../devicetree/bindings/input/adc-keys.txt         |  49 +++++

Acked-by: Rob Herring <robh@kernel.org>

 drivers/input/keyboard/Kconfig                     |  15 ++
 drivers/input/keyboard/Makefile                    |   1 +
 drivers/input/keyboard/adc-keys.c                  | 210 +++++++++++++++++++++
 4 files changed, 275 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/adc-keys.txt
 create mode 100644 drivers/input/keyboard/adc-keys.c