From f4f3255edf95fcecf5ceb9586a529c7600a7cb13 Mon Sep 17 00:00:00 2001
From: Solomon Peachy <pizza@shaftnet.org>
Date: Thu, 1 Oct 2020 17:12:35 -0400
Subject: [PATCH] xduoox3:  Work out clocks for 176/192KHz support.

Note:  PCM mix buffer sizes are _way_ too small for these high bitrates

(We really need to make the mixer stuff use dynamic buffer sizes based
 on the bitrate.  Maybe pre-allocate a max size based on upper bitrate limit,
 but use only part of it at lower bitrates?  So we can have sane latency..)

Change-Id: Id7b4afd73dba7f1ffb84b2e1c016859fae5d6835
---
 firmware/export/config/xduoox3.h              |  2 +-
 .../target/mips/ingenic_jz47xx/codec-jz4760.c | 23 ++++++++++---------
 2 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/firmware/export/config/xduoox3.h b/firmware/export/config/xduoox3.h
index 484e52d151..6cc1aa2e57 100644
--- a/firmware/export/config/xduoox3.h
+++ b/firmware/export/config/xduoox3.h
@@ -106,7 +106,7 @@
 #define HAVE_SW_TONE_CONTROLS
 
 /* define the bitmask of hardware sample rates */
-#define HW_SAMPR_CAPS  SAMPR_CAP_ALL_96
+#define HW_SAMPR_CAPS  SAMPR_CAP_ALL_192
 
 #define AB_REPEAT_ENABLE
 
diff --git a/firmware/target/mips/ingenic_jz47xx/codec-jz4760.c b/firmware/target/mips/ingenic_jz47xx/codec-jz4760.c
index 60bfecb08c..b00b3fddef 100644
--- a/firmware/target/mips/ingenic_jz47xx/codec-jz4760.c
+++ b/firmware/target/mips/ingenic_jz47xx/codec-jz4760.c
@@ -208,9 +208,6 @@ void audiohw_set_frequency(int fsel)
     // bclk is 2,3,4,6,8,12  ONLY
     // mclk is 1..512
 
-    // for cs4398, BCLK must be 4 for single-rate, 2 for double-rate, 1 for quad-rate!
-
-    // 11.025 and 22.050 are a little wonky.
     switch(fsel)
     {
         case HW_FREQ_8: // 0.512 MHz
@@ -222,8 +219,6 @@ void audiohw_set_frequency(int fsel)
         case HW_FREQ_11: // 0.7056 MHz
             pll1_speed = 508000000 / 3;
             mclk_div = 180 / 3;
-//	    pll1_speed = 0;
-//            mclk_div = 272;
             bclk_div = 4;
             func_mode = 0;
             break;
@@ -242,8 +237,6 @@ void audiohw_set_frequency(int fsel)
         case HW_FREQ_22: // 1.4112 MHz
             pll1_speed = 508000000 / 3;
             mclk_div = 90 / 3;
-//            pll1_speed = 0;
-//            mclk_div = 136;
             bclk_div = 4;
             func_mode = 0;
             break;
@@ -263,8 +256,6 @@ void audiohw_set_frequency(int fsel)
         case HW_FREQ_44: // 2.8224 MHz
             pll1_speed = 508000000 / 3;
             mclk_div = 45 / 3;
-//            pll1_speed = 0;
-//            mclk_div = 68;
             bclk_div = 4;
             dem = CS4398_DEM_44100;
             func_mode = 0;
@@ -285,8 +276,6 @@ void audiohw_set_frequency(int fsel)
         case HW_FREQ_88: // 5.6448 MHz
             pll1_speed = 508000000 / 3;
             mclk_div = 45 / 3;
-//            pll1_speed = 0;
-//            mclk_div = 68;
             bclk_div = 2;
             func_mode = 1;
             break;
@@ -296,6 +285,18 @@ void audiohw_set_frequency(int fsel)
             bclk_div = 2;
             func_mode = 1;
             break;
+        case HW_FREQ_176: // 11.2896 MHz
+            pll1_speed = 508000000*2;
+            mclk_div = 45;
+            bclk_div = 2;
+            func_mode = 2;
+            break;
+        case HW_FREQ_192: // 12.288 MHz
+            pll1_speed = 516000000;
+            mclk_div = 42/2;
+            bclk_div = 2;
+            func_mode = 2;
+            break;
         default:
             return;
     }