The zinitix family of touchscreens support at least three modes, called
0, 1, and 2. At least some digitizers (including, but not limited to
ZT7548) are able to support multiple modes. Currently, the driver in
linux supports mode 2 only. This series aims to add support for modes 0
and 1, accompanied with necessary architectural changes.

Among other things, perhaps the biggest difference between multiple
modes is how the touch report schema is laid out. Modes may skip
reporting certain properties such as touch width and pressure. For more
implementation details, the android driver [1] can be referred to, which
was also the primary reference material for these changes.

The last patch is for the Samsung Galaxy J6 (samsung-j6lte), which has a
zinitix touchscreen digitizer. By default, mode 2 is assumed for the
touchscreen, however the downstream kernel driver [1] for this device
uses mode 0 by default. This creates an issue with aftermarket
digitizers where mode 2 implementation isn't available simply because
it's not required by the driver downstream.

This last patch needs to be accepted into next only when the former
patches are in next.  

[1] https://github.com/samsungexynos7870/android_kernel_samsung_exynos7870/blob/master/drivers/input/touchscreen/zinitix/zinitix_zt75xx_ts.c

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
---
Kaustabh Chakraborty (5):
      Input: zinitix - check all available fingers for every touch event
      Input: zinitix - do not ignore non-moving fingers
      Input: zinitix - add support for modes 0 and 1
      dt-bindings: input/ts/zinitix: document mode 0
      arm64: dts: exynos7870-j6lte: set mode 0 as default for zinitix touchscreen

 .../bindings/input/touchscreen/zinitix,bt400.yaml  |   4 +-
 arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts    |   2 +
 drivers/input/touchscreen/zinitix.c                | 144 +++++++++++++++++++--
 3 files changed, 136 insertions(+), 14 deletions(-)
---
base-commit: 290aaf24a551d5a0dce037e3fab30820f9113a10
change-id: 20260723-zinitix-modes-9c4d409b9ee3

Best regards,
--  
Kaustabh Chakraborty <kauschluss@disroot.org>