HD200 - add FM support.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25757 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 58 insertions, 7 deletions

diff --git a/firmware/target/coldfire/mpio/audio-mpio.c b/firmware/target/coldfire/mpio/audio-mpio.c
index 28c6419171..217881547e 100644
--- a/firmware/target/coldfire/mpio/audio-mpio.c
+++ b/firmware/target/coldfire/mpio/audio-mpio.c
@@ -23,27 +23,78 @@
 #include "audio.h"
 #include "sound.h"
 
+static inline void enable_mclk(bool enable)
+{
+    if(enable)
+        and_l(~(1<<10), &GPIO1_FUNCTION);
+    else
+        or_l((1<<10), &GPIO1_FUNCTION);
+}
+
 void audio_set_output_source(int source)
 {
+    static const unsigned char txsrc_select[AUDIO_NUM_SOURCES+1] =
+    {
+        [AUDIO_SRC_PLAYBACK+1] = 3, /* PDOR3        */
+        [AUDIO_SRC_MIC+1]      = 4, /* IIS1 RcvData */
+        [AUDIO_SRC_LINEIN+1]   = 4, /* IIS1 RcvData */
+        [AUDIO_SRC_FMRADIO+1]  = 4, /* IIS1 RcvData */
+    };
 
-    (void)source;
     int level = set_irq_level(DMA_IRQ_LEVEL);
 
-    /* PDOR3 */
-    IIS2CONFIG = (IIS2CONFIG & ~(7 << 8)) | (3 << 8);
+    if ((unsigned)source >= AUDIO_NUM_SOURCES)
+        source = AUDIO_SRC_PLAYBACK;
+
+    IIS2CONFIG = (IIS2CONFIG & ~(7 << 8)) | (txsrc_select[source+1] << 8);
 
     restore_irq(level);
 }
 
 void audio_input_mux(int source, unsigned flags)
 {
-    (void)source;
-    (void)flags;
+    /* Prevent pops from unneeded switching */
+    static int last_source = AUDIO_SRC_PLAYBACK;
+    bool recording = flags & SRCF_RECORDING;
+    static bool last_recording = false;
 
     switch(source)
     {
+        default:
+            /* playback - no recording */
+            source = AUDIO_SRC_PLAYBACK;
+
+        case AUDIO_SRC_PLAYBACK:
+            if (source != last_source)
+            {
+                audiohw_set_recsrc(source,false);
+                coldfire_set_dataincontrol(0);
+            }
+            break;
+
+        case AUDIO_SRC_MIC:
+        case AUDIO_SRC_LINEIN: 
+            /* recording only */
+            if (source != last_source)
+            {
+                audiohw_set_recsrc(source,true);
+                /* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
+                coldfire_set_dataincontrol((3 << 14) | (4 << 3));
+            }
+            break;
+
         case AUDIO_SRC_FMRADIO:
-        break;
+            if (source == last_source && recording == last_recording)
+                break;
+
+            last_recording = recording;
+
+            /* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
+            coldfire_set_dataincontrol(recording ?
+                                       ((3 << 14) | (4 << 3)) : 0);
+            audiohw_set_recsrc(source, recording);
+            break;
     }
-    /* empty stub */
+
+    last_source = source;
 }