Add a pair of functions to translate from input events to hid codes,
mapping most of the current hid codes defined in zephyr/usb/class/hid.h.
Use a sparse table for the mapping, which takes advantage of the fact
that code 0 is reserved. Inspired by the linux equivalent hid to input
map:
https://elixir.bootlin.com/linux/latest/source/drivers/hid/hid-input.c#L27
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Add two input subsystem options: one for dumping input events, one for
triggering input reports from the shell.
The two are independent from each other, so dumping can be enabled on
any application that has no shell, but if the shell command is present
logging can be toggled on and off with a shell command.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Add an input device to take input key events as an input and generates
short press or long press devices as output.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Move the input listener section declaration in common-rom-misc.ld
instead of using a custom input.ld file. This seems to be the common
practice for upstream iterable sections and seems to solve a
compatibility issue where the section was getting allocated incorrectly
on esp32 based platforms.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Initial commit introducing the input subsystem into Zephyr.
Includes the input_event data structure, the input_report_* APIs, an
iterables sections based subscription API and two operation modes:
synchronous, where the listeners are called directly, and asynchronous,
where the listeners are called in a dedicated thread.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
