homing: Pass printer instead of toolhead object to Homing class

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

klippy/extras/probe.py

@@ -47,7 +47,7 @@ class PrinterProbe:
     cmd_PROBE_help = "Probe Z-height at current XY position"
     def cmd_PROBE(self, params):
         toolhead = self.printer.lookup_object('toolhead')
-        homing_state = homing.Homing(toolhead)
+        homing_state = homing.Homing(self.printer)
         pos = toolhead.get_position()
         pos[2] = self.z_position
         endstops = [(self.mcu_probe, "probe")]

klippy/gcode.py

@@ -513,7 +513,7 @@ class GCodeParser:
                 axes.append(self.axis2pos[axis])
         if not axes:
             axes = [0, 1, 2]
-        homing_state = homing.Homing(self.toolhead)
+        homing_state = homing.Homing(self.printer)
         if self.is_fileinput:
             homing_state.set_no_verify_retract()
         try:

klippy/homing.py

@@ -10,8 +10,9 @@ ENDSTOP_SAMPLE_TIME = .000015
 ENDSTOP_SAMPLE_COUNT = 4
 
 class Homing:
-    def __init__(self, toolhead):
-        self.toolhead = toolhead
+    def __init__(self, printer):
+        self.printer = printer
+        self.toolhead = printer.lookup_object('toolhead')
         self.changed_axes = []
         self.verify_retract = True
     def set_no_verify_retract(self):