Replace the wait_period_us clamping functions using a single CLAMP,
reposition the debug log as well.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Move the input_kbd_matrix.h header out of drivers/ and into include/,
this allows external drivers to use it and doxygen to pick it up.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
The API field of input_kbd_matrix_common_config should have been a
pointer from the start, clang-16 caught this with a compiler warning.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Move all the generic code from the Nuvoton NPCX keyboard scanning driver
into input_kbd_matrix.c. While doing that convert few configs into
devicetree properties and tweak few other things to enable the generic
code to support multiple instances.
This is limited to 8 rows for now, and that's fine for all the current
in-tree drivers, the limit could be removed down the road but this
should be fine for now, added few generic build checks to make sure a
driver does not go over the limit, as well and some more implementation
specific checks.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
We currently have three keyboard scanning drivers in the code base
(npcx, it8xxx2 and mchp_xec, last two yet to be converted to input).
These have been largely copy pasted from each other and share a lot of
the same structure and code.
This PR lays a foundation to start decoupling feature from those drivers
into a common code base, and it is heavily inspired by the current
regulator common data/config one.
Feature wise this only moves the thread struct, stack and initialization
to the common code and declares the thread callback as the only API, but
the intent is to move as much code as possible in there an only abstract
device specific callbacks in the api structures.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
