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

From: Hugo Villeneuve

Date: Tue Feb 03 2026 - 11:11:13 EST


From: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx>

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
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2.47.3