fhdl/edif: add support for inout signals

diff --git a/migen/fhdl/edif.py b/migen/fhdl/edif.py
index dd63f87e7aa8a4199bbd5e8147b23895a1028714..4a1eb0c2c68283c67734886b7f03ade5fa0f1a4f 100644 (file)
--- a/migen/fhdl/edif.py
+++ b/migen/fhdl/edif.py
@@ -113,6 +113,8 @@ def _generate_cells(f):
                                        port_list.append(_Port(port.name, "INPUT"))
                                elif isinstance(port, Instance.Output):
                                        port_list.append(_Port(port.name, "OUTPUT"))
+                               elif isinstance(port, Instance.InOut):
+                                       port_list.append(_Port(port.name, "INOUT"))
                                elif isinstance(port, Instance.Parameter):
                                        pass
                                else:
@@ -136,6 +138,8 @@ def _generate_instances(f,ns):
                                        pass
                                elif isinstance(prop, Instance.Output):
                                        pass
+                               elif isinstance(prop, Instance.InOut):
+                                       pass
                                elif isinstance(prop, Instance.Parameter):
                                        props.append(_Property(name=prop.name, value=prop.value))
                                else:
@@ -147,9 +151,10 @@ def _generate_instances(f,ns):
 
 def _generate_ios(f, ios, ns):
        outs = list_special_ios(f, False, True, False)
+       inouts = list_special_ios(f, False, False, True)
        r = []
        for io in ios:
-               direction = "OUTPUT" if io in outs else "INPUT"
+               direction = "OUTPUT" if io in outs else "INOUT" if io in inouts else "INPUT"
                r.append(_Port(name=ns.get_name(io), direction=direction))
        return r
 
@@ -159,7 +164,7 @@ def _generate_connections(f, ios, ns):
                if isinstance(special, Instance):
                        instname = ns.get_name(special)
                        for port in special.items:
-                               if isinstance(port, Instance.Input) or isinstance(port, Instance.Output):
+                               if isinstance(port, Instance.Input) or isinstance(port, Instance.Output) or isinstance(port, Instance.InOut):
                                        s = ns.get_name(port.expr)
                                        if s not in r:
                                                r[s] = []