Add a void *user_data pointer to the input callback structure. This is
useful for driver to get back the driver data structure and avoid
defining wrapper functions.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Looking back at the current INPUT_LISTENER_CB_DEFINE api naming, it
feels like it's a bit overloaded. Rename it to a simpler
INPUT_CALLBACK_DEFINE.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
Add a driver that listens for input events and reports them on a kscan
API. This allows porting kscan drivers to the input APIs while
maintaining compatibility with the existing kscan based applications.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
