Name
v4l2_ctrl_notify —
Function to set a notify callback for a control.
Synopsis
void v4l2_ctrl_notify ( | struct v4l2_ctrl * ctrl, |
| | v4l2_ctrl_notify_fnc notify, |
| | void * priv); |
Arguments
ctrl
The control.
notify
The callback function.
priv
The callback private handle, passed as argument to the callback.
Description
This function sets a callback function for the control. If ctrl is NULL,
then it will do nothing. If notify is NULL, then the notify callback will
be removed.
There can be only one notify. If another already exists, then a WARN_ON
will be issued and the function will do nothing.