1 files changed, 8 insertions, 0 deletions

diff --git a/firmware/export/uda1380.h b/firmware/export/uda1380.h
index 4b70e795bf..f8c8d6dd66 100644
--- a/firmware/export/uda1380.h
+++ b/firmware/export/uda1380.h
@@ -19,6 +19,14 @@
 
 #ifndef _UDA1380_H
 #define _UDA1380_H
+
+/* volume/balance/treble/bass interdependency */
+#define VOLUME_MIN -840
+#define VOLUME_MAX  0
+
+extern tenthdb2master(int db);
+extern tenthdb2mixer(int db);
+
 extern void audiohw_reset(void);
 extern int audiohw_init(void);
 extern void audiohw_enable_output(bool enable);