* introduce AUDIOHW_CAPS to define which audio codec can do what kind of operations in hw, e.g. setting bass

* added documentation why and when we need the software based prescaler
* implement audiohw_set_bass and audiohw_set_treble for mas35xx
* clean up sound_set_bass and sound_set_treble
* simplify some #ifdef logic
* fix special handling of WM8751 - looking for tester :)



git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17274 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 21 insertions, 1 deletions

diff --git a/firmware/drivers/audio/mas35xx.c b/firmware/drivers/audio/mas35xx.c
index dac890ddc8..983818bf61 100644
--- a/firmware/drivers/audio/mas35xx.c
+++ b/firmware/drivers/audio/mas35xx.c
@@ -150,3 +150,23 @@ void audiohw_set_stereo_width(int val)
         set_channel_config();
     }
 }
+
+void audiohw_set_bass(int val)
+{
+#if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
+    unsigned tmp = ((unsigned)(val * 8) & 0xff) << 8;
+    mas_codec_writereg(0x14, tmp);
+#elif CONFIG_CODEC == MAS3507D
+    mas_writereg(MAS_REG_KBASS, bass_table[val+15]);
+#endif
+}
+
+void audiohw_set_treble(int val)
+{
+#if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
+    unsigned tmp = ((unsigned)(val * 8) & 0xff) << 8;
+    mas_codec_writereg(0x15, tmp);
+#elif CONFIG_CODEC == MAS3507D
+    mas_writereg(MAS_REG_KTREBLE, treble_table[val+15]);
+#endif
+}
diff --git a/firmware/drivers/audio/wm8751.c b/firmware/drivers/audio/wm8751.c
index 831f16ab17..26123456b6 100644
--- a/firmware/drivers/audio/wm8751.c
+++ b/firmware/drivers/audio/wm8751.c
@@ -79,7 +79,7 @@ static int tone_tenthdb2hw(int value)
     /* -6.0db..+0db..+9.0db step 1.5db - translate -60..+0..+90 step 15
         to 10..6..0 step -1.
     */
-    value = 10 - (value + 60) / 15;
+    value = (10 - (value + 60) / 15) / 10;
 
     if (value == 6)
         value = 0xf; /* 0db -> off */