[PATCH v3 0/2] Add ADG1712 SPST switch controller support

[Antoniu Miclaus <antoniu.miclaus@analog.com>]

This series adds support for the Analog Devices ADG1712 quad single-pole,
single-throw (SPST) switch controller.

The ADG1712 contains four independent analog switches, each controlled by
a dedicated GPIO input pin. This implementation configures the switches
once at probe time based on device tree properties.

Changes in v3:
- Moved device tree bindings from gpio/ to switch/ subsystem
- Completely redesigned driver architecture: removed GPIO controller interface
- Added 'switch-states' device tree property for configuring initial switch states
- Driver now sets switches once at probe time based on DT properties
- Updated descriptions to clarify that switches cannot be changed from userspace
- Simplified driver structure and removed all GPIO chip functionality

Antoniu Miclaus (2):
  dt-bindings: switch: adg1712: add adg1712 support
  gpio: adg1712: add driver support

 .../bindings/switch/adi,adg1712.yaml          | 68 +++++++++++++++
 drivers/gpio/Kconfig                          |  9 ++
 drivers/gpio/Makefile                         |  1 +
 drivers/gpio/gpio-adg1712.c                   | 87 +++++++++++++++++++
 4 files changed, 165 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/switch/adi,adg1712.yaml
 create mode 100644 drivers/gpio/gpio-adg1712.c

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2.43.0