diff --git a/litex/soc/cores/i2c_worker.py b/litex/soc/cores/i2c_worker.py
index 1c1a3d8e76..a718ec981e 100644
--- a/litex/soc/cores/i2c_worker.py
+++ b/litex/soc/cores/i2c_worker.py
@@ -28,6 +28,14 @@ class I2CState(IntEnum):
     ABORT = 9
     CLR_FIFO = 10
 
+    @classmethod
+    def encode(self):
+        return list(map(lambda c: c.value, self))
+
+    @classmethod
+    def __len__(self):
+        return 11
+
 
 @dataclass
 class I2CQueueEntry(param.Parameterized):