[PATCH v5 0/2] input: misc: Add PixArt PAJ7620 gesture sensor

From: Harpreet Saini via B4 Relay

Date: Mon Apr 27 2026 - 00:47:14 EST


Add support for PixArt PAJ7620 gesture sensor

This series adds support for the PixArt PAJ7620 hand gesture sensor.
The sensor is connected via I2C and supports 9 different gestures.
The first patch adds the DT bindings, and the second patch adds the
driver itself.

Changes in v5:
- Added this missing cover letter.
- Included Reviewed-by tag for the bindings patch.
- Linked to previous v4 discussion.
- No functional changes since v4.

Changes in v4:
- In pixart,paj7620.yaml dt-binding file added allOf: with $ref and
unevaluatedProperties
- No changes in other files
- Link to v4: https://lore.kernel.org/all/20260421041505.4548-2-sainiharpreet29@xxxxxxxxx

Changes in v3:
- Moved sensor power-up and paj7620_init() to input open/close callbacks
- Implemented dynamic keymap support via 'linux,keycodes' DT property
and enabled userspace adjustment via EVIOCSKEYCODE.
- Updated YAML bindings to include mandatory vdd, vbus, and vled
supplies.
- Added gpio-controller properties to YAML for hardware completeness.
- Link to v3: https://lore.kernel.org/all/20260418062241.104697-1-sainiharpreet29@xxxxxxxxx

Changes in v2:
- Moved driver from drivers/iio/light to drivers/input/misc
- Updated DT bindings to include mandatory vdd, vbus, and vled supplies
- Added Runtime PM support with autosuspend logic
- Combined bindings and driver into a single series
- Link to v2: https://lore.kernel.org/all/20260417052527.62535-1-sainiharpreet29@xxxxxxxxx

Changes in v1:
- Initial patch for dt-binding and driver was added to iio/light
subsystem.
- Link to v1: https://lore.kernel.org/all/20260413000308.7618-1-sainiharpreet29@xxxxxxxxx

Testing:
- Hardware: Raspberry Pi 3
- Method: Verified all hand gestures using 'evtest' to confirm correct
input event reporting.

Signed-off-by: Harpreet Saini <sainiharpreet29@xxxxxxxxx>

---
Harpreet Saini (2):
dt-bindings: input: Add PixArt PAJ7620 gesture sensor
input: misc: Add PixArt PAJ7620 gesture sensor driver

.../devicetree/bindings/input/pixart,paj7620.yaml | 84 +++++
.../devicetree/bindings/vendor-prefixes.yaml | 2 +
drivers/input/misc/Kconfig | 12 +
drivers/input/misc/Makefile | 1 +
drivers/input/misc/paj7620.c | 338 +++++++++++++++++++++
5 files changed, 437 insertions(+)
---
base-commit: bf9c95f3eeefb7fc4b4a6380cc23f1dca744e379
change-id: 20260426-paj7620-v5-79ab28a3b2e4

Best regards,
--
Harpreet Saini <sainiharpreet29@xxxxxxxxx>