move protocol message to stack, disable battery in PWR's CR3

there is still issue with CC1/CC2 pull down resistor and vstate is not
correct.

src/typec/tcd.h

@@ -38,10 +38,28 @@ extern "C" {
 //--------------------------------------------------------------------+
 //
 //--------------------------------------------------------------------+
+
+enum {
+  TCD_EVENT_INVALID = 0,
+  TCD_EVENT_CC_CHANGED,
+  TCD_EVENT_RX_COMPLETE,
+};
+
+
 typedef struct {
   uint8_t rhport;
   uint8_t event_id;
 
+  union {
+    struct {
+      uint8_t cc_state[2];
+    } cc_changed;
+
+    struct {
+      uint16_t xferred_bytes;
+      uint8_t result;
+    } rx_complete;
+  };
 
 } tcd_event_t;;
 
@@ -68,4 +86,38 @@ void tcd_int_handler(uint8_t rhport);
 bool tcd_rx_start(uint8_t rhport, uint8_t* buffer, uint16_t total_bytes);
 bool tcd_tx_start(uint8_t rhport, uint8_t const* buffer, uint16_t total_bytes);
 
+//--------------------------------------------------------------------+
+// Event API (implemented by stack)
+// Called by TCD to notify stack
+//--------------------------------------------------------------------+
+
+extern void tcd_event_handler(tcd_event_t const * event, bool in_isr);
+
+TU_ATTR_ALWAYS_INLINE static inline
+void tcd_event_cc_changed(uint8_t rhport, uint8_t cc1, uint8_t cc2, bool in_isr) {
+  tcd_event_t event = {
+    .rhport   = rhport,
+    .event_id = TCD_EVENT_CC_CHANGED,
+    .cc_changed = {
+        .cc_state = {cc1, cc2 }
+    }
+  };
+
+  tcd_event_handler(&event, in_isr);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline
+void tcd_event_rx_complete(uint8_t rhport, uint16_t xferred_bytes, uint8_t result, bool in_isr) {
+  tcd_event_t event = {
+    .rhport   = rhport,
+    .event_id = TCD_EVENT_RX_COMPLETE,
+    .rx_complete = {
+        .xferred_bytes = xferred_bytes,
+        .result        = result
+    }
+  };
+
+  tcd_event_handler(&event, in_isr);
+}
+
 #endif