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[v4,0/5] input/touchscreen: imagis: add support for IST3032C

Message ID 20240120191940.3631-1-karelb@gimli.ms.mff.cuni.cz
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Series input/touchscreen: imagis: add support for IST3032C | expand

Message

Karel Balej Jan. 20, 2024, 7:11 p.m. UTC 
From: Karel Balej <balejk@matfyz.cz>

Hello,

this patch series generalizes the Imagis touchscreen driver to support
other Imagis chips, namely IST3038B and IST3032C, which use a slightly
different protocol.

It also adds necessary information to the driver so that the IST3032C
touchscreen can be used with it. The motivation for this is the
samsung,coreprimevelte smartphone with which this series has been
tested. However, the support for this device is not yet in-tree, the
effort is happening at [1]. Preliminary version of the regulator driver
needed to use the touchscreen on this phone can be found here [2].

Note that this is a prerequisite for this patch [3] which implements
support for touch keys for Imagis touchscreens that have it.

[1] https://lore.kernel.org/all/20240110-pxa1908-lkml-v8-0-fea768a59474@skole.hr/
[2] https://lore.kernel.org/all/20231228100208.2932-1-karelb@gimli.ms.mff.cuni.cz/
[3] https://lore.kernel.org/all/20231112194124.24916-1-duje.mihanovic@skole.hr/
---
v4:
- Rebase to v6.7.
- v3: https://lore.kernel.org/all/20231202125948.10345-1-karelb@gimli.ms.mff.cuni.cz/
- Address feedback and add trailers.
v3:
- Rebase to v6.7-rc3.
- v2: https://lore.kernel.org/all/20231003133440.4696-1-karelb@gimli.ms.mff.cuni.cz/
v2:
- Do not rename the driver.
- Do not hardcode voltage required by the IST3032C.
- Use Markuss' series which generalizes the driver. Link to the original
  series: https://lore.kernel.org/all/20220504152406.8730-1-markuss.broks@gmail.com/
- Separate bindings into separate patch.
- v1: https://lore.kernel.org/all/20230926173531.18715-1-balejk@matfyz.cz/

Karel Balej (2):
  dt-bindings: input/touchscreen: imagis: add compatible for IST3032C
  input/touchscreen: imagis: add support for IST3032C

Markuss Broks (3):
  input/touchscreen: imagis: Correct the maximum touch area value
  dt-bindings: input/touchscreen: Add compatible for IST3038B
  input/touchscreen: imagis: Add support for Imagis IST3038B

 .../input/touchscreen/imagis,ist3038c.yaml    |  2 +
 drivers/input/touchscreen/imagis.c            | 70 +++++++++++++++----
 2 files changed, 60 insertions(+), 12 deletions(-)