1 files changed, 21 insertions, 0 deletions

diff --git a/sound/firewire/fcp.h b/sound/firewire/fcp.h
index 86595688bd91..63ae4f7ce3af 100644
--- a/sound/firewire/fcp.h
+++ b/sound/firewire/fcp.h
@@ -1,8 +1,29 @@
 #ifndef SOUND_FIREWIRE_FCP_H_INCLUDED
 #define SOUND_FIREWIRE_FCP_H_INCLUDED
 
+#define AVC_PLUG_INFO_BUF_BYTES 4
+
 struct fw_unit;
 
+/*
+ * AV/C Digital Interface Command Set General Specification 4.2
+ * (Sep 2004, 1394TA)
+ */
+enum avc_general_plug_dir {
+        AVC_GENERAL_PLUG_DIR_IN         = 0,
+        AVC_GENERAL_PLUG_DIR_OUT        = 1,
+        AVC_GENERAL_PLUG_DIR_COUNT
+};
+int avc_general_set_sig_fmt(struct fw_unit *unit, unsigned int rate,
+                            enum avc_general_plug_dir dir,
+                            unsigned short plug);
+int avc_general_get_sig_fmt(struct fw_unit *unit, unsigned int *rate,
+                            enum avc_general_plug_dir dir,
+                            unsigned short plug);
+int avc_general_get_plug_info(struct fw_unit *unit, unsigned int subunit_type,
+                              unsigned int subunit_id, unsigned int subfunction,
+                              u8 info[AVC_PLUG_INFO_BUF_BYTES]);
+
 int fcp_avc_transaction(struct fw_unit *unit,
                         const void *command, unsigned int command_size,
                         void *response, unsigned int response_size,