diff --git a/libc/kernel/uapi/linux/cec.h b/libc/kernel/uapi/linux/cec.h
index 8125ac4..3fcee96 100644
--- a/libc/kernel/uapi/linux/cec.h
+++ b/libc/kernel/uapi/linux/cec.h
@@ -91,6 +91,7 @@
 #define CEC_MODE_FOLLOWER (0x1 << 4)
 #define CEC_MODE_EXCL_FOLLOWER (0x2 << 4)
 #define CEC_MODE_EXCL_FOLLOWER_PASSTHRU (0x3 << 4)
+#define CEC_MODE_MONITOR_PIN (0xd << 4)
 #define CEC_MODE_MONITOR (0xe << 4)
 #define CEC_MODE_MONITOR_ALL (0xf << 4)
 #define CEC_MODE_FOLLOWER_MSK 0xf0
@@ -100,6 +101,8 @@
 #define CEC_CAP_PASSTHROUGH (1 << 3)
 #define CEC_CAP_RC (1 << 4)
 #define CEC_CAP_MONITOR_ALL (1 << 5)
+#define CEC_CAP_NEEDS_HPD (1 << 6)
+#define CEC_CAP_MONITOR_PIN (1 << 7)
 struct cec_caps {
   char driver[32];
   char name[32];
@@ -125,7 +128,10 @@
 #define CEC_LOG_ADDRS_FL_CDC_ONLY (1 << 2)
 #define CEC_EVENT_STATE_CHANGE 1
 #define CEC_EVENT_LOST_MSGS 2
+#define CEC_EVENT_PIN_CEC_LOW 3
+#define CEC_EVENT_PIN_CEC_HIGH 4
 #define CEC_EVENT_FL_INITIAL_STATE (1 << 0)
+#define CEC_EVENT_FL_DROPPED_EVENTS (1 << 1)
 struct cec_event_state_change {
   __u16 phys_addr;
   __u16 log_addr_mask;