Improve action/function names and tweak report responses

src/avclandrv.h

@@ -90,10 +90,11 @@ typedef enum {
   Disable_Function_Req = 0x43,
   Disable_Function_Resp = 0x53,
 
-  Advertise_Function = 0x45,
+  Current_Function = 0x45,
   General_Query = 0x46,
 
   // Physical interface
+  Backlight_Adjust = 0x59,
   Eject = 0x80,
   Disc_Up = 0x90,
   Disc_Down = 0x91,
@@ -108,24 +109,27 @@ typedef enum {
   CD_Enable_Random = 0xb0,
   CD_Disable_Random = 0xb1,
 
-  // CD functions
   // Events
-  Inserted_CD = 0x50,
-  Removed_CD = 0x51,
+  Insertion = 0x50,
+  Ejection = 0x51,
+
+  // Requests and Response pairs
+  Initial_Report_Request = 0xe0,
+  Initial_Report_Response = 0xf0,
+
+  Playback_Request = 0xe2,
+  Playback_Report = 0xf2,
+
+  Loading_Request2 = 0xe4,
+  Loading_Response2 = 0xf4,
 
-  // Requests
-  Request_Report = 0xe0,
-  Request_Report2 = 0xe2,
-  Request_Loader2 = 0xe4,
   Request_Track_Name = 0xed,
+  Report_Track_Name = 0xfd,
 
   // Reports
-  Report = 0xf1,
-  Report2 = 0xf2,
-  Report_Loader = 0xf3,
-  Report_Loader2 = 0xf4,
+  Status_Report = 0xf1,         // Typically unprompted, sent to dev_STATUS
+  Loading_Status_Report = 0xf3, // Typically unprompted, sent to dev_STATUS
   Report_TOC = 0xf9,
-  Report_Track_Name = 0xfd,
 } actions;
 
 typedef enum {