1 files changed, 21 insertions, 0 deletions
diff --git a/board/cr50/board.h b/board/cr50/board.h
index 540f4c622d..ea0ac15dae 100644
--- a/board/cr50/board.h
+++ b/board/cr50/board.h
@@ -366,6 +366,27 @@ int ec_is_on(void);
 int ec_is_rx_allowed(void);
 int servo_is_connected(void);
 
+/*
+ * Assert INT_AP_L to acknowledge AP that cr50 is ready for next TPM command.
+ * NOTE: must be called by ISR only.
+ *
+ * Returns 1 if it successfully asserted (or scheduled to assert), or
+ *         0 if the extended long pulse was disabled.
+ */
+int assert_int_ap(void);
+
+/*
+ * Deassert INT_AP_L immediately.
+ * NOTE: must be called by ISR only.
+ */
+void deassert_int_ap(void);
+
+/* Register a function that should be called when INT_AP_L extension starts. */
+void int_ap_register(void (*func_enable)(void));
+
+void int_ap_extension_enable(void);
+void int_ap_extension_stop_pulse(void);
+
 /* Moving from legacy versions might require NVMEM transition. */
 int board_nvmem_legacy_check_needed(void);