M:Robe 500: Improve audio DMA shutdown for Pause/Stop and significantly reduce the size of the DSP code.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23817 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 20 insertions, 4 deletions

diff --git a/firmware/target/arm/tms320dm320/dsp/arm.c b/firmware/target/arm/tms320dm320/dsp/arm.c
index a2c19c7f62..e0df31c7a1 100644
--- a/firmware/target/arm/tms320dm320/dsp/arm.c
+++ b/firmware/target/arm/tms320dm320/dsp/arm.c
@@ -28,17 +28,27 @@
 
 volatile struct ipc_message status;
 
-extern int waiting;
-volatile int acked;
+#if defined(HAVE_DEBUG)
+static int acked;
+#endif
+
 interrupt void handle_int0(void) {
     IFR = 1;
+    
+#if defined(HAVE_DEBUG)
     acked = 1;
+#endif
+
     waiting = 0;
     
     if(dma0_stopped==0)
         {
                 if(!(DMPREC&0x01))
                 {
+                    /* Give the HPIB access to refill first */
+                    rebuffer();
+                    
+                    /* Start the MCBSP DMA */
                         DMPREC |= 1;
                         audiohw_start();
                 }
@@ -47,15 +57,20 @@ interrupt void handle_int0(void) {
                         rebuffer();
                 }
         }
+        else
+        {
+            rebuffer();
+    }
 }
 
-void startack(void)
+#if defined(HAVE_DEBUG)
+static void startack(void)
 {
     acked = 0;
     int_arm();
 }
 
-void waitack(void)
+static void waitack(void)
 {
     /* Wait until ARM has picked up data. */
     while (!acked) 
@@ -78,3 +93,4 @@ void debugf(const char *fmt, ...) {
 
     acked = 2;
 }
+#endif