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.

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)

---
Changes in v6:
- add info on difference between variants
- add A-b from conor
- add warning for out of range pressure

---
Changes in v7:
- address feedback of sashiko (thanks dmitry.torokhov@gmail.com)

---
Changes in v8:
- add regulator and interrupt headers explicitely
- adjust some data types

---
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       | 448 ++++++++++++++++++
 4 files changed, 534 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/wacom,w9007a-lt03.yaml
 create mode 100644 drivers/input/touchscreen/wacom_w9000.c

-- 
2.43.0