Introduce PRESCALER_CAP and move some driver specific code to the correct place.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17516 a1c6a512-1295-4272-9138-f99709370657

firmware/export/audiohw.h

@@ -28,6 +28,7 @@
 #define BASS_CAP        (1 << 1)
 #define BALANCE_CAP     (1 << 2)
 #define CLIPPING_CAP    (1 << 3)
+#define PRESCALER_CAP   (1 << 4)
 
 #ifdef HAVE_UDA1380
 #include "uda1380.h"
@@ -72,6 +73,10 @@
 #if (AUDIOHW_CAPS & CLIPPING_CAP)
 #define AUDIOHW_HAVE_CLIPPING
 #endif
+
+#if (AUDIOHW_CAPS & PRESCALER_CAP)
+#define AUDIOHW_HAVE_PRESCALER
+#endif
 #endif /* AUDIOHW_CAPS */
 
 enum {
@@ -164,6 +169,16 @@ void audiohw_close(void);
 void audiohw_set_volume(int val);
 #endif
 
+#ifdef AUDIOHW_HAVE_PRESCALER
+/**
+ * Set new prescaler value.
+ * @param val to set.
+ * NOTE: AUDIOHW_CAPS need to contain
+ *          PRESCALER_CAP
+ */
+void audiohw_set_prescaler(int val);
+#endif
+
 #ifdef AUDIOHW_HAVE_BALANCE
 /**
  * Set new balance value

firmware/export/mas35xx.h

@@ -28,7 +28,7 @@
 
 #define VOLUME_MIN -780
 #define VOLUME_MAX  180
-#define AUDIOHW_CAPS (BASS_CAP | TREBLE_CAP)
+#define AUDIOHW_CAPS (BASS_CAP | TREBLE_CAP | PRESCALER_CAP)
 
 #else /* CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F */
 

firmware/export/uda1380.h

@@ -24,7 +24,7 @@
 #define VOLUME_MIN -840
 #define VOLUME_MAX  0
 
-#define AUDIOHW_CAPS (BASS_CAP | TREBLE_CAP)
+#define AUDIOHW_CAPS (BASS_CAP | TREBLE_CAP | PRESCALER_CAP)
 
 extern int tenthdb2master(int db);
 extern int tenthdb2mixer(int db);