[PATCH v5 0/2] Add support for Wacom W9000-series penabled touchscreens

[Hendrik Noack <hendrik-noack@gmx.de>]

Add devicetree bindings and a driver for the Wacom W9000-series penabled
touchscreens.

The driver currently only contains the information for the W9002 and
W9007A, which I or Ferass could test on devices. It should also work with
other chips, such as W9001 or W9010. However, I couldn't test it on these
and the message length would need to be added.

The pen-inserted-gpios is used to get if the pen is inserted in the device
or not. It's also used as an interrupt so that the power state of the chip
itself can be controlled depending on a change of the insertion state of
the pen.

Signed-off-by: Hendrik Noack <hendrik-noack@gmx.de>
---
Changes in v2:
- remove pdct-gpios, as it's unnecessary
- fix devicetree example
- adopt to kernel coding style

---
Changes in v3:
- fix missing include (thanks lkp@intel.com)

---
Changes in v4:
- adopt to feedback (thanks dmitry.torokhov@gmail.com)
- add W9002 support (thanks funderscore@postmarketos.org)
- add reset-gpios, necessary for some chips
- remove R-b from krzk due to changes in dt-bindings

---
Changes in v5:
- adopt dt-bindings format to suggestion (thanks krzk@kernel.org)
- remove pen-inserted functionality as suggested (thanks dmitry.torokhov@gmail.com)

---
Hendrik Noack (2):
  dt-bindings: Input: Add Wacom W9000-series penabled touchscreens
  Input: Add support for Wacom W9000-series penabled touchscreens

 .../input/touchscreen/wacom,w9007a-lt03.yaml  |  73 +++
 drivers/input/touchscreen/Kconfig             |  12 +
 drivers/input/touchscreen/Makefile            |   1 +
 drivers/input/touchscreen/wacom_w9000.c       | 433 ++++++++++++++++++
 4 files changed, 519 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/wacom,w9007a-lt03.yaml
 create mode 100644 drivers/input/touchscreen/wacom_w9000.c

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2.43.0