e200v1/c200v1: Implement limited samplerate switching. Rates 24kHz and below are being a bear as far as minor crackling at higher amplitude-- leave them out for the time being since no solution is currently evident. 48, 44, 32 (rec rates 24, 22, 16) seem perfectly fine. I'm betting c200 is ok to include because it uses the same setup as e200.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27139 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 13 insertions, 0 deletions

diff --git a/firmware/drivers/audio/as3514.c b/firmware/drivers/audio/as3514.c
index 34dc9ad29f..957aba8dbb 100644
--- a/firmware/drivers/audio/as3514.c
+++ b/firmware/drivers/audio/as3514.c
@@ -327,6 +327,15 @@ void audiohw_close(void)
 
 void audiohw_set_frequency(int fsel)
 {
+#if defined(SANSA_E200) || defined(SANSA_C200)
+    if ((unsigned)fsel >= HW_NUM_FREQ)
+        fsel = HW_FREQ_DEFAULT;
+
+    as3514_write(AS3514_PLLMODE, hw_freq_sampr[fsel] < 24000 ?
+                 PLLMODE_LRCK_8_23 : PLLMODE_LRCK_24_48);
+
+    audiohw_set_sampr_dividers(fsel);
+#endif
     (void)fsel;
 }
 
diff --git a/firmware/drivers/audio/sdl.c b/firmware/drivers/audio/sdl.c
index c063192873..f4c622d7a6 100644
--- a/firmware/drivers/audio/sdl.c
+++ b/firmware/drivers/audio/sdl.c
@@ -162,6 +162,10 @@ void audiohw_set_eq_band_width(unsigned int band, int value)
 void audiohw_set_depth_3d(int value)
     { (void)value; }
 #endif
+#if defined(HAVE_SAMPR_TYPE_REC)
+unsigned int pcm_sampr_type_rec_to_play(int samplerate)
+    { return samplerate; }
+#endif
 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 int mas_codec_readreg(int reg)
 {