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[v5,0/3] Input: Add TouchNetix axiom touchscreen driver

Message ID 20231211121430.1689139-1-kamel.bouhara@bootlin.com
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Series Input: Add TouchNetix axiom touchscreen driver | expand

Message

Kamel BOUHARA Dec. 11, 2023, 12:14 p.m. UTC 
Add a new driver for the TouchNetix's axiom family of
touchscreen controller. This driver only support i2c
and can be later adapted for SPI and USB support.

---
Changes in v2:
 - Add device tree binding documentation
 - Move core functions in axiom_i2c as we only care about i2c support now
 - Use static function when required
 - Use syntax dev_err_probe()
 - Add an hardware based reset

Changes in v3:
 - Remove irq-gpios property in dt-binding
 - Use a generic node name
 - Fix issues reported in https://lore.kernel.org/oe-kbuild-all/202310100300.oAC2M62R-lkp@intel.com/

Changes in v4:
 - Cleanup unused headers and macros
 - Use standard kernel type
 - Namespace structures and functions
 - Use packed struct when possible to avoid bitfield operators
 - Fix missing break when address is found in axiom_populate_target_address()
 - Split reads in two steps for the reports, first length then report
   itself so we only read required bytes
 - Get poll-interval from devicetree
 - Add VDDI/VDDA regulators
 - Add a startup delay of 110 ms required after VDDA/VDDI is applied
 - Remove axiom_i2c_write() as it is no more used

Changes in v5:
 - Fix wrong message constructed in axiom_i2c_read
 - Delay required between i2c reads is >= 250us
 - Do not split report reading in two phases as we'll
   have to wait 500us
 - Use lower-case in properties names
 - Make regulators properties are required in dt-binding
 - Fix bug report: https://lore.kernel.org/lkml/202312051457.y3N1q3sZ-lkp@intel.com/
 - Fix bug report: https://lore.kernel.org/lkml/6f8e3b64-5b21-4a50-8680-063ef7a93bdb@suswa.mountain/

Kamel Bouhara (3):
  dt-bindings: vendor-prefixes: Add TouchNetix AS
  dt-bindings: input: Add TouchNetix axiom touchscreen
  Input: Add TouchNetix axiom i2c touchscreen driver

 .../input/touchscreen/touchnetix,ax54a.yaml   |  64 ++
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 MAINTAINERS                                   |   7 +
 drivers/input/touchscreen/Kconfig             |  12 +
 drivers/input/touchscreen/Makefile            |   1 +
 drivers/input/touchscreen/touchnetix_axiom.c  | 667 ++++++++++++++++++
 6 files changed, 753 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/touchnetix,ax54a.yaml
 create mode 100644 drivers/input/touchscreen/touchnetix_axiom.c

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2.25.1