linux-kernel - [PATCH 0/2] input: add GPIO-based charlieplex keypad

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Message-ID: <20260203155023.536103-1-hugo@hugovil.com>
Date: Tue,  3 Feb 2026 10:49:46 -0500
From: Hugo Villeneuve <hugo@...ovil.com>
To: hvilleneuve@...onoff.com,
	dmitry.torokhov@...il.com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org
Cc: linux-input@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	hugo@...ovil.com
Subject: [PATCH 0/2] input: add GPIO-based charlieplex keypad

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

Hello,
this patch series add a new GPIO charlieplex keypad driver.

I have tested the driver on a custom board with a Solidrun RZ/G2LC SOM
with three charlieplex keyboards, all connected thru a a PCA9416 I2C GPIO
expander.

Thank you.

Hugo Villeneuve (2):
  dt-bindings: input: add GPIO charlieplex keypad
  Input: charlieplex_keypad: add GPIO charlieplex keypad

 .../input/gpio-charlieplex-keypad.yaml        |  88 +++++++
 MAINTAINERS                                   |   7 +
 drivers/input/keyboard/Kconfig                |  14 ++
 drivers/input/keyboard/Makefile               |   1 +
 drivers/input/keyboard/charlieplex_keypad.c   | 223 ++++++++++++++++++
 5 files changed, 333 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/gpio-charlieplex-keypad.yaml
 create mode 100644 drivers/input/keyboard/charlieplex_keypad.c


base-commit: ed8a4ef29da3821ee3155d3b1925fa67fc92aae2
-- 
2.47.3