1 files changed, 8 insertions, 1 deletions
diff --git a/alsa-binding/Alsa-ApiHat.h b/alsa-binding/Alsa-ApiHat.h
index ba0d054..209c65b 100644
--- a/alsa-binding/Alsa-ApiHat.h
+++ b/alsa-binding/Alsa-ApiHat.h
@@ -27,7 +27,8 @@
 #include <json-c/json.h>
 
 // Soft control have dynamically allocated numid
-#define CTL_AUTO -1
+#define CTL_AUTO    -1
+#define CTL_UNKNOWN -2
 
 #ifndef PUBLIC
   #define PUBLIC
@@ -54,6 +55,11 @@ typedef enum {
     ACTION_GET
 } ActionSetGetT;
 
+typedef enum {
+    CONTROL_ADD,
+    CONTROL_REMOVE
+} ControlAddRemoveT;
+
 // structure to store card
 typedef struct {
     int cardNb;
@@ -105,6 +111,7 @@ PUBLIC void alsaUseCaseGet(afb_req_t request);
 PUBLIC void alsaUseCaseClose(afb_req_t request);
 PUBLIC void alsaUseCaseReset(afb_req_t request);
 PUBLIC void alsaAddCustomCtls(afb_req_t request);
+PUBLIC void alsaRemoveCustomCtls(afb_req_t request);
 
 // AlsaRegEvt
 PUBLIC void alsaEvtSubcribe (afb_req_t request);