diff --git a/nx/include/switch/nvidia/ioctl.h b/nx/include/switch/nvidia/ioctl.h
index d9442c00..95d9b5c6 100644
--- a/nx/include/switch/nvidia/ioctl.h
+++ b/nx/include/switch/nvidia/ioctl.h
@@ -157,7 +157,9 @@ typedef struct {
 
 Result nvioctlNvhostCtrl_EventSignal(u32 fd, u32 event_id);
 Result nvioctlNvhostCtrl_EventWait(u32 fd, u32 syncpt_id, u32 threshold, s32 timeout, u32 event_id, u32 *out);
+Result nvioctlNvhostCtrl_EventWaitAsync(u32 fd, u32 syncpt_id, u32 threshold, s32 timeout, u32 event_id);
 Result nvioctlNvhostCtrl_EventRegister(u32 fd, u32 event_id);
+Result nvioctlNvhostCtrl_EventUnregister(u32 fd, u32 event_id);
 
 Result nvioctlNvhostCtrlGpu_ZCullGetCtxSize(u32 fd, u32 *out);
 Result nvioctlNvhostCtrlGpu_ZCullGetInfo(u32 fd, u32 out[40>>2]);
diff --git a/nx/source/nvidia/ioctl/nvhost-ctrl.c b/nx/source/nvidia/ioctl/nvhost-ctrl.c
index 8f4d7089..f5ec2f58 100644
--- a/nx/source/nvidia/ioctl/nvhost-ctrl.c
+++ b/nx/source/nvidia/ioctl/nvhost-ctrl.c
@@ -54,7 +54,8 @@ Result nvioctlNvhostCtrl_SyncptWait(u32 fd, u32 id, u32 threshold, u32 timeout)
     return nvIoctl(fd, _NV_IOWR(0x00, 0x16, data), &data);
 }
 
-Result nvioctlNvhostCtrl_EventSignal(u32 fd, u32 event_id) {
+Result nvioctlNvhostCtrl_EventSignal(u32 fd, u32 event_id)
+{
     struct {
         __nv_in u32 event_id;
     } data;
@@ -90,7 +91,26 @@ Result nvioctlNvhostCtrl_EventWait(u32 fd, u32 syncpt_id, u32 threshold, s32 tim
     return rc;
 }
 
-Result nvioctlNvhostCtrl_EventRegister(u32 fd, u32 event_id) {
+Result nvioctlNvhostCtrl_EventWaitAsync(u32 fd, u32 syncpt_id, u32 threshold, s32 timeout, u32 event_id)
+{
+    struct {
+        __nv_in u32 syncpt_id;
+        __nv_in u32 threshold;
+        __nv_in s32 timeout;
+        __nv_in u32 event_id;
+    } data;
+
+    memset(&data, 0, sizeof(data));
+    data.syncpt_id = syncpt_id;
+    data.threshold = threshold;
+    data.timeout = timeout;
+    data.event_id = event_id;
+
+    return nvIoctl(fd, _NV_IOWR(0x00, 0x1E, data), &data);
+}
+
+Result nvioctlNvhostCtrl_EventRegister(u32 fd, u32 event_id)
+{
     struct {
         __nv_in u32 event_id;
     } data;
@@ -98,5 +118,17 @@ Result nvioctlNvhostCtrl_EventRegister(u32 fd, u32 event_id) {
     memset(&data, 0, sizeof(data));
     data.event_id = event_id;
 
-    return nvIoctl(fd, _NV_IOWR(0x40, 0x1F, data), &data);
+    return nvIoctl(fd, _NV_IOWR(0x00, 0x1F, data), &data);
+}
+
+Result nvioctlNvhostCtrl_EventUnregister(u32 fd, u32 event_id)
+{
+    struct {
+        __nv_in u32 event_id;
+    } data;
+
+    memset(&data, 0, sizeof(data));
+    data.event_id = event_id;
+
+    return nvIoctl(fd, _NV_IOWR(0x00, 0x20, data), &data);
 }